PROJECT CONSTRUCTION INVESTMENT MANAGEMENT
AUTHORITY PROVINCE MANAGEMENT UNIT OF DAM REHABILITATION AND SAFETY
IMPROVEMENT PHU YEN PROVINCE
REPORT ON
ENVIRONMENTAL AND SOCIAL IMPACT
ASSESSMENT
SUBPROJECT: DAM REHABILITATION AND SAFETY
IMPROVEMENT (WB8) PHU YEN PROVINCE
PROJECT: DAM REHABILITATION AND SAFETY
IMPROVEMENT (DRSIP/WB8) FUNDED BY THE
WORLD BANK
Phu Yen, January 2020
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Subproject: dam rehabilitation and safety improvement (wb8) Phu Yen province
Report environemental and Social impact assessment (ESIA) 2
PROJECT CONSTRUCTION INVESTMENT MANAGEMENT
AUTHORITY PROVINCE MANAGEMENT UNIT OF DAM REHABILITATION AND SAFETY
IMPROVEMENT PHU YEN PROVINCE
PROJECT: DAM REHABILITATION AND SAFETY IMPROVEMENT
(WB8)
REPORT ON
ENVIRONMENTAL AND SOCIAL IMPACT
ASSESSMENT
SUBPROJECT: DAM REHABILITATION AND SAFETY
IMPROVEMENT (WB8) PHU YEN PROVINCE
REPRESENTATIVE OF THE PROJECT
OWNER
REPRESENTATIVE OF THE
CONSULTANCY UNIT
Phu Yen, January 2020
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 3
LIST OF ABBREVIATIONS
AH Affected Household
CPC Communal People’s Committee
CPO Central Project Office
DPC District People’s Committee
DSR Dam Safety Report
DRSIP Dam Rehabilitation and Safety Improvement
DED Detailed Engineering Design
ECOPs Environmental Code of Practice
SA Social Assessment
EIA Environment Impact Assessment
ESMF Environment and Social Management Framework
EMDF Ethnic Minority Development Framework
EMDP Ethnic minority Development Plan
EM Ethnic minority
EMP Environement Management Plan
ESIA Environment and Social Impact Assessment
ESMP Environment and Social Management Plan
FPIC Free, prior and informed consultation
IPM Integrated Pest Management
ICM Integrated Crop Management
MARD Ministry of Agriculture and Rural Development
MCM Million Cubic Meters
MoIT Ministry of Industry and Trade
MoNRE Ministry of Natural Resources and Environment
WB World Bank
FFS Farm Field School
O&M Operation and Maintenance
OP/BP Policies of World Bank
GAP Gender Action Plan
IDA International Development Agency
RAP Resettlement Action Plan
PPC Provincial People’s Committee
PMU Project Management Unit
PMB Project Management Board
PoE Panel of Experts
PPMU Provincial Project Management Unit
PSC Project Steering Committee
SRI System Rice Intensification
TOF Training of farmers
VND Vietnamese dong
TOR Terms of Reference
UNDP United Nations Development Program
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 4
WHO World Health Organization
WUA
UXO
Water Users Association
Unexploded ordnance
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 5
TABLE OF CONTENT
LIST OF ABBREVIATIONS ................................................................................................................3
TABLE OF CONTENT .........................................................................................................................5
LIST OF TABLES .................................................................................................................................8
LIST OF FIGURES .............................................................................................................................10
SUMMARY ..........................................................................................................................................11
CHAPTER I: PROJECT INTRODUCTION ....................................................................................18
1.1. Approach and method of implementation ................................................................... 18
1.1.1. Methods of social impact assessment ...................................................................... 18
1.1.2. Environment impact assessment method ................................................................ 19
1.2. Implementation arrangement of ESIA report ............................................................. 20
CHAPTER II: DESCRIPTION OF SUBPROJECT ........................................................................22
2.1. Objective of the subproject ............................................................................................ 22
2.2. Location of subproject implementation ........................................................................ 22
2.3. Status of works and construction solutions .................................................................. 23
2.4. Summary of excavation volume, construction materials and machinery ................ 36
2.4.1. Summary of excavation volume ............................................................................... 36
2.4.2. Summary of volume of materials ............................................................................. 36
2.4.3. Mobilization of vehicles and machinery for construction ...................................... 37
2.4.4. Distance, transport route of materials ..................................................................... 39
2.5. Auxiliary items ................................................................................................................ 40
2.5.1. Electricity, water for construction and living .......................................................... 40
2.5.2. Demand for workers’ houses and camps ............................................................... 40
2.5.3. Construction route .................................................................................................... 40
2.5.4. Landfill, soil pits ....................................................................................................... 42
2.6. Pre-construction activities .............................................................................................. 44
2.7. Material transportation plan ......................................................................................... 44
2.8. Operational and maintenance activities ....................................................................... 44
2.9. Dam safety plan ............................................................................................................... 44
2.10. Subproject implementation schedule ............................................................................ 45
2.11. Cost of implementation ................................................................................................... 46
CHAPTER 3: LEGAL, ADMINISTRATIVE AND POLICY FRAMEWORK ............................47
3.1. Government Regulation ................................................................................................. 47
3.2. The World Bank’s safeguard policies ........................................................................... 50
3.2.1. Project level ............................................................................................................... 50
3.2.2. Subproject level ......................................................................................................... 50
CHAPTER 4: NATURAL, SOCIO-ECONOMIC CONDITIONS AND ENVIRONMENTAL
STATUS ................................................................................................................................................57
4.1. Natural conditions ........................................................................................................... 57
4.1.1. Geographical and geological conditions ................................................................. 57
4.1.2. Topographic and geological conditions .................................................................. 57
4.1.3. Climate and meteorological conditions ................................................................... 58
4.1.4. Hydrological conditions............................................................................................ 60
4.1.5. Biodiversity ................................................................................................................ 67
4.2. The impact of climate change on Phu Yen province ................................................... 69
4.2.1. Types of natural disasters often occur in Phu Yen province ................................. 69
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 6
4.2.2. The impact of climate change on Phu Yen province .............................................. 70
4.3. Environmental status ...................................................................................................... 70
4.3.1. Quality of ambient air environment and nois ......................................................... 71
4.3.2. Environmental quality of surface water .................................................................. 71
4.3.3. Quality of groundwater environment ...................................................................... 71
4.3.4. Quality of soil environment ...................................................................................... 71
4.4. General socio-economic characteristics of sub-project areas .................................... 72
4.4.1. Socio-economic characteristics of subproject communes ...................................... 72
4.4.2. Survey result of households benefited from subproject.......................................... 80
4.5. Sensitive works ................................................................................................................ 92
CHAPTER 5: ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT ............................95
5.1. Types and scale of impacts ............................................................................................. 95
5.2. Potential positive impacts on environment and society .............................................. 96
5.2.1. Potential negative impacts from the subproject on the social environment .......... 96
5.2.2. Assessment and forecasting of impacts during the process of preparing the
subproject ................................................................................................................................. 96
5.2.3. Impact evaluation and projection during subproject construction phase ........... 106
5.2.4. Predictors of specific impacts ................................................................................. 133
5.2.5. Evaluating and forecasting of impacts during the operational phase of the
subproject ............................................................................................................................... 138
5.3. Analysis of types of impact ........................................................................................... 138
5.3.1. Cumulative impacts................................................................................................. 138
5.3.2. Direct Impact ........................................................................................................... 139
5.3.3. Indirect impacts ....................................................................................................... 139
5.3.4. Temporary impact ................................................................................................... 139
5.3.5. Long term impact .................................................................................................... 139
CHAPTER VI: ALTERNATIVE ANALYSIS ................................................................................140
6.1. Without subproject ....................................................................................................... 140
6.2. The option of implementing the sub-project .............................................................. 141
CHAPTER VII: ENVIRONMENTAL AND SOCIAL MANAGEMENT PLAN (ESMP) .........145
7.1. Objectives ....................................................................................................................... 145
7.2. Mitigation measures ...................................................................................................... 145
7.2.1. Impact mitigation measures in the subproject preparation measures ................. 145
7.2.2. C Mitigation measures during construction phase ............................................... 147
7.2.3. Mitigation measures for specific impacts .............................................................. 170
7.2.4. Mitigation measured in operation phase ............................................................... 175
7.3. Implementation arrangement ...................................................................................... 176
7.3.1. Project management ............................................................................................... 176
7.3.2. Roles and responsibilities for environmental and social safeguard management177
7.4. Environmental Compliance Framework .................................................................... 181
7.4.1. Environmental tasks of the Contractor: ................................................................ 181
7.4.2. Contractor’s safety, social and environmental officer ......................................... 181
7.4.3. Social and environmental monitoring during construction phase (Monitoring
Consultant) ............................................................................................................................. 182
7.4.4. Compliance with contract requirement and legal regulations ............................. 182
7.4.5. Report System .......................................................................................................... 183
7.5. Grievance redressing mechanism ................................................................................ 184
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 7
7.5.1. Complaints and complaint settlement procedures ................................................ 184
7.5.2. Contractor and construction supervision consultant: .......................................... 185
7.5.3. Grievance redressing mechanism of WB .............................................................. 185
7.6. ESMP Implementation plan ........................................................................................ 186
7.6.1. ESMP Implementation Plan of the Contractor .................................................... 186
7.6.2. Subproject commencement and personnel ............................................................ 186
7.7. Capacity development and training plan ................................................................... 186
7.7.1. Training on safety policies ..................................................................................... 186
7.7.2. Occupational health and safety training ............................................................... 187
7.7.3. Orientation of visitors ............................................................................................. 187
7.7.4. Training for new contractors and workers ........................................................... 187
7.7.5. Basic training on occupational health and safety ................................................ 187
7.8. Environmental quality monitoring plan ..................................................................... 188
7.8.1. The compliance monitoring ................................................................................... 188
7.8.2. Monitoring of environment quality ....................................................................... 188
7.8.3. Dam safety monitoring ........................................................................................... 190
7.9. Estimated cost ................................................................................................................ 190
CHAPTER VIII: COMMUNITY CONSULTATION AND INFORMATION DISCLOSURE 197
8.1. Purpose and method ..................................................................................................... 197
8.1.1. Purpose of community consultation ...................................................................... 197
8.1.2. Principles of community consultation ................................................................... 197
8.2. Consultation process ..................................................................................................... 198
8.2.1. Brief description of consultation process at commune/town level and mass
organizations .......................................................................................................................... 199
8.2.2. Summary of consultations with community directly affected by Subproject ...... 200
8.3. Results of public consultation ...................................................................................... 200
8.4. Feedback and commitment of the Project Owner..................................................... 206
8.5. Information Disclosure ................................................................................................. 207
CONCLUSIONS AND RECOMMENDATIONS ...........................................................................208
Conclusion .................................................................................................................................... 208
Recommendations ....................................................................................................................... 208
REFERENCES ...................................................................................................................................209
ANNEX................................................................................................................................................210
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 8
LIST OF TABLES
Table 1: The list of reservoirs under the subproject of “Dam rehabilitation and Safety Improvement
(WB8), Phu Yen province” .....................................................................................................................11
Table 2: Cost estimate for ESMP implementation .................................................................................16
Table 3: List of persons participating in implementation ......................................................................21
Table 4: Geographic location of reservoir under the subproject ..........................................................22
Table 5: Summary of some specifications of reservoirs .........................................................................23
Table 6: Summary of current information of reservoirs and construction works of the Subproject ......24
Table 7: Total volume of excavated soil and embankment soil of the subproject ..................................36
Table 8: Summary of materials volume of the subproject ......................................................................36
Table 9: list of machines and equipment for construction of subproject ...............................................37
Table 10: Distance, transport route of materials ...................................................................................39
Table 11: Expected number of workers in construction sites ................................................................40
Table 12: Volume and location of landfill, transportation routes .........................................................42
Table 13: Volume and location of soil pits during construction ............................................................43
Table14: Progress implementation of subproject ..................................................................................46
Table 15: Cost of implementation of subproject ....................................................................................46
Table 16: Summary of environmental assessment process of WB & Government .................................52
Table 17: Distribution table of air temperature characteristics ............................................................58
Table 18: Table of distribution of relative humidity characteristics (Unit:%) ......................................59
Table 19: Table of wind speed in months of the year (Unit: m/s) ..........................................................59
Table 20: The amount of evaporation of the months of the year (Unit: mm) .........................................59
Table 21: Rainfall design irrigation area ..............................................................................................60
Table 22: Average rainfall for years, months ........................................................................................60
Table 23: The watershed characteristics of the reservoirs under the subproject .................................60
Table 24: Result of calculating the annual flow characteristics ............................................................60
Table 25: Calculation table of results for the design year flow .............................................................61
Table 26: Distribution table of design annual flow ...............................................................................61
Table 27: Results table of flood peak flow calculations Qmax ..............................................................62
Table 28: Chart flood diagram of reservoirs belong subproject ..........................................................63
Table 29: Details on socio-economic conditions of subproject communes ...........................................75
Table 30: Average number of demographics participated in the survey ...............................................80
Table 31: Gender of surveyed people ....................................................................................................80
Table 32: Age of surveyed people ..........................................................................................................81
Table 33: Size of households participating in the survey .......................................................................81
Table 34: Ethnic minority composition of respondents ..........................................................................82
Table 35: Education level of surveyed people ........................................................................................83
Table 36: Occupation of the respondents ..............................................................................................83
Table 37: Total income of households in the subproject area ...............................................................85
Table 38: Type of housing of the household...........................................................................................86
Table 39: Distance from home to service points in the subproject area ................................................87
Table 40: Water source used for eating and daily activities of households ...........................................87
Table 41: State of using toilet of household ...........................................................................................88
Table 42: Gender in local community participation (%) .......................................................................89
Table 43: Division of labor by gender in production and living (%) .....................................................89
Table 44: Gender in making decision in family (%) ..............................................................................90
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 9
Table 45: Poverty situation of ethnic minority people in the districts of the subproject .......................90
Table 46: Situation of ethnic minorities in the project communes (people) ...........................................91
Table 47: Understand the nature of HIV/AIDS ......................................................................................91
Table 48: Awareness about the way of HIV / AIDS transmission ..........................................................91
Table 49: Awareness of people about HIV/AIDS (%) ............................................................................92
Table 50: Summary of the status of sensitive works ...............................................................................92
Table 51: The criteria for classification of negative impacts ................................................................95
Table 52: Sources of impact during construction preparation phase ....................................................97
Table 53: Statistics of impacts and scope of land acquisition ...............................................................99
Table 54: Summary of affected trees and crops ...................................................................................100
Table 55: Pollutant load coefficient for trucks running on roads ........................................................101
Table 56: Number of vehicles transporting luminescent vegetation ....................................................102
Table 57: Pollutant load emissions of means of transport of transportation of luminescent vegetation
..............................................................................................................................................................102
Table 58: : Pollutant load emissions of means of transport of transportation of luminescent vegetation
in 1hour ................................................................................................................................................102
Table 59: Concentrations of pollutants in the air due to transportation of luminescent plants in
reservoirs of Phu Xuan, Dong Tron, Hon Dinh, Hoc Ram and Dong Khon ........................................103
Table 60: Concentrations of pollutants in the air due to transportation of luminescent plants in
reservoirs of Gieng Tien; Ea Ddin1, Hoa Thuan .................................................................................104
Table 61: Biomass of 1m2 of vegetation type.......................................................................................105
Table 62: The amount of biomass generated during the preparation stage .......................................105
Table 63: Summary of source of impact during construction phase ....................................................106
Table 64: Aggregate volume of air and dust pollutant emission sources ............................................109
Table 65: Volume of construction materials ........................................................................................110
Table 66: Pollutant load of means of transport of transportation of luminescent vegetation in 1hour
..............................................................................................................................................................110
Table 67: Concentrations of pollutants in the air from the transportation of construction materials are
swept away by the wind ........................................................................................................................111
Table 68: Pollutant load coefficient for trucks running on roads (for 1000 km) .................................111
Table 69: Number of turns transport vehicles......................................................................................112
Table 70: Load of pollutants from cars transporting materials ...........................................................112
Table 71: Concentration of pollutants through transport of materials ................................................113
Table 72: Forecast of oil consumption in construction activities at the construction site ...................113
Table 73: Load of pollutants from machinery and equipment during construction .............................114
Table 74: Concentration of pollutants from the operation of construction machinery........................114
Table 75: Pollution emission coefficient due to construction activities ...............................................115
Table 76: The amount of dust generated by the excavation and embankment and leveling process at
the construction site .............................................................................................................................116
Table 77: D ust concentration due to operation to excavation and embankment ................................116
Table 78: Calculation results of noise level at source during construction phase ..............................117
Table 79: Forecast of noise reduction according to distance from source ..........................................118
Table 80: Vibration level decreases with the distance in construction ................................................120
Table 81: Estimates of sources of substances causing water contaminants ........................................122
Table 82: Concentration of pollutants of domestic wastewater during construction phase ................122
Table 83: Concentration of pollutants in construction waste water ....................................................123
Table 84: Predict potential soil erosion due to rain from construction items of the subproject ..........124
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 10
Table 85: Estimated volume of excavation, embankment and domestic waste generated from
subproject construction activities .........................................................................................................125
Table 86: Beneficial area and number of HHs likely to be affected due to interruption of irrigation
water supply during the subproject construction .................................................................................129
Table 87: Specific impacts of the subproject........................................................................................134
Table 88: Cost estimate for compensation and resettlement................................................................146
Table 89: Environmental code of practices (ECOP) to mitigate general impacts during the
construction process .............................................................................................................................149
Table 90: Mitigation measures for sensitive works ..............................................................................170
Table 91: General mitigation measures for impacts during operation phase .....................................175
Table 92: Roles and responsibilities of stakeholders ...........................................................................178
Table 93: Requirements on report system ............................................................................................183
Table 94: Summary of the contents of quality monitoring of environmental components in the
construction phase and operation and maintenance ............................................................................189
Table 95: Estimated costs for ESMP ....................................................................................................190
Table 96. Budget source for ESMP monitoring ...................................................................................190
Table 97: Summary of mitigation measures .........................................................................................192
Table 98: Time and location of consultation meeting ..........................................................................199
Table 99: Summary of consultation results and project owner comments ...........................................200
Table 100: Summary of consultations on environmental and social issues of affected households ....206
LIST OF FIGURES
Figure 1: Locations of subproject reservoirs .........................................................................................23
Figure 2: Map of the administrative units of Phu Yen province ............................................................57
Figure 3: Structure of environmental management and supervision organization..............................176
Figure 4: Organizational chart of subproject safeguard performance................................................177
Subproject: dam rehabilitation and safety improvement (wb8) Phu Yen province
Report environemental and Social impact assessment (ESIA) 11
SUMMARY
1. Introduction: The project of: “Dam rehabilitation and Safety Improvement (DRSIP/WB8)
funded by the World Bankwas approved by Prime Minister in accordance with the Decision No.
1858/QĐ-TTg dated 02/11/2015 and the Feasibility Study Report of the project was approved by
Minister of Ministry of Agriculture and Rural Development through Decision No. 4638/QĐ-NN-
HĐQT dated 09/11/2015.
2. Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province, PPMU issued
Decision No. 61 / QD-BQL-WB8, dated 08/6/2017 on approving the plan for selecting contractors for
investment preparation phase (phase 2); No. 20 / QD-BQL-WB8, dated January 23, 2018, approving
the results of evaluation of documents presenting interest in package number C1-PHUYEN-CS1; No.
69 / QD-BQL-WB8, dated March 26, 2018, approving the results of contractor selection of package
number C1-PHUYEN-CS1: Consultancy for preparation of Feasibility Study Report and Dam Safety
Report under the Dam Safety Repair and Improvement sub-project in Phu Yen Province. Accordingly,
the subproject includes 8 water reservoirs:
Table 1: The list of reservoirs under the subproject of “Dam rehabilitation and Safety Improvement
(WB8), Phu Yen province”
No. Name of
reservoirs
Capacity
(x106 m3)
Height of
dam
(m)
Construction
level Location of the subproject
1 Phu Xuan 11.22 23.80 II Xuan Phuoc commune, Dong Xuan
district
2 Dong Tron 19.55 29.00 II An Nghiep commune, Tuy An
district
3 Hon Dinh 0.710 4.70 IV Hoa Xuan Tay commune, Dong Hoa
district
4 Gieng Tien 1.45 7.60 IV Son Ha commune, Son Hoa district
5 Dong Khon 2.716 16.20 III Hoa Xuan Tay commune, Dong Hoa
district
6 Hoc Ram 2.91 17.80 II Hoa Tan Tay commune, Tay Hoa
district
7 EaDin 1 1.45 13.00 III Ea Bar Commune, Song Hinh
District
8 Hoa Thuan 1.45 9.00 IV Son Dinh commune, Son Hoa
district
3. The status of reservoirs under the subproject “Dam rehabilitation and safety improvement
(WB8) Phu Yen province: Most of reservoirs are homogeneous earth dams which have been exploited
for a long time and have not been upgraded, resulting in deterioration, damage, and weakness in
preventing flood. Main items of the works are likely to cause unsafety. In addition, most of the works
were built between 1983 and 2004 basing on hydrological documents, natural conditions, design
standards which are no longer suitable for the situation of climate change, especially the current
complex climate change. Facing with the above mentioned situation, repairing, upgrading and
ensuring of safety for the works is very necessary
Head works will be repaired and upgraded; ensure safety for reservoirs in exploitation and operation;
ensure irrigation water supply for 4,509.05 ha of agriculture land.
Status of reservoirs is presented in details in Annex 2.2.1 of this report.
4. Description of the subproject. The construction items of the subproject are implemented in 8
reservoirs, with the aim of supporting the implementation of the Program to ensure safety of reservoirs
through repair, reinforcement, upgrading of priority dams, strengthening of management capacity and
safe operation of dams to protect people specifically residence and socio-economic infrastructure in
the downstream area.
Specific objectives:
a) To secure the safety of reservoirs and key works.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 12
b) To improve the efficiency of irrigation works in service of intensive cultivation, increase
productivity and quality of products, develop specialized areas of high yielding and high
economic value, maximize potential of agricultural land in the region.
c) To reduce water loss, to ensure the water demand for people's life, the development of local
industries, and socio-economic development in the subproject area in particular and Phu Yen
province in general.
d) To create natural landscapes, improve the ecological environment, promote tourism
development in the region.
Construction items:
a) Repairing, upgrading soil dams, reinforcing dam crest, repairing upstream slope, downstream
slope, reworking slope drainage systems and treating dams;
b) Repair, replace water intake culverts depending on the extent of damage;
c) Reinforce and renew to improve drainage capacity of spillway, it is possible to expand flood
discharge spillways and overflow with surface discharge gates or self-fuse spillways;
d) Management road: Depending on the current status of each reservoir, construction of concrete
pavement structure conforms to rural road standards.;
e) Renovating reservoir managers house: grade IV houses have electricity and water systems for
daily life and reservoir management;
f) Monitoring equipment: To build a system of upstream and downstream water level
observation posts
5. Results of environmental and social screening: The subproject is not located in or near natural
habitats and there is no rare or endangered animals and plants found in the subproject area. There are
also no sensitive construction or monuments that have cultural, religious or historical significance in
and around the subproject. Regarding ethnic minorities, there are 4 communes under the subproject
that have ethnic minorities: Xuan Phuoc, Hoa Tan Tay, Ea Bar, Son Dinh, The ethnic minority groups
here are mainly Cham and Khmer. The subproject will only upgrade the dam on existing reservoirs,
which has been screened for the environment and society and determined that the subproject does not
cause significant impacts on the environment and society in the project implementation area and the
subproject is rated as category B in terms of environmental and social impacts. The World Bank
policies are triggered under the subproject including: OP/BP 4.01 on environmental assessment, OP
4.09 on pest management, OP/BP 4.37 on safety of dams, OP/BP 4.12 on involuntary resettlement;
OP/BP 4.10 Indigenous peoples, and OP/BP 4.11 Physical Cultural Resources.
6. The social and environmental impact assessment aims to identify both positive and negative
impacts of the subproject, thereby proposing appropriate mitigation measures to control and manage
those impacts, in order to optimize the benefits of the subproject.
7. Social and environmental impacts of the subproject: The subproject brings both positive and
negative impacts.
(a) Positive impacts:
- The subproject will repair and upgrade safety of head works of reservoirs to ensure safety
for people and their assets who live in the downstream area, and communes in subproject
and residents of neighboring affected areas;
- After being implemented, the subproject will improve the storing of reservoirs, improve
capacity of storing underground water in the nearby area;
- Regularly and sustainably provide irrigation water for agriculture cultivation area in the
downstream area;
- Improve landscape in the reservoir area and provide habitat aquatic life.
(b) Negative impacts during pre-construction and construction phases, including:
- The implementation of the subproject will recover the productive land of the households in
subproject area. The implementation of the sub-project will permanently acquired a total of
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 13
49,274.73 m2 belonged to 16 households and 5 organizations are People's Committees of
communes, in which: 2 crops Rice land: 771.29 m2, Other annual crops land: 1,533.66 m2,
Land for perennial crops: 172,35 m2, Production forest land: 19.121,96 m2, Residential land:
36,17 m2 and: 27,639.3 m2 Public land managed by the CPC includes 12.428,6 m2 Other
annual crops land and 15,146 m2 Unused hilly land and 64,7 m2 Unused land. In addition, the
project will temporarily acquired 14,500 m2 of unused land for landfill purpose.
- According to the results of consultations and interviews in the subproject localities, explosive
objects have not been detected in the subproject communes. However, Phu Yen province has
repeatedly discovered explosive objects and has been handled by the authorities. According to
a report on the status of landmine and UXO contamination (Vietnam National Mine Action
Center) Phu Yen province has 9/9 districts (cities and towns) identified as contaminated with
UXO as: Tuy Hoa city, Song Cau town and districts: Dong Xuan, Tuy An, Son Hoa, Song
Hinh, Tay Hoa, Phu Hoa and Dong Hoa; A total of 113/113 communes (wards and towns)
were identified as being contaminated with UXO, accounting for 100%, UXO contaminated
area is 107,950.22 hectares, accounted for 21.4% of the province's natural area. Therefore,
UXO can be found in the construction area or the land mine, stone. In order to minimize risks,
the subproject owner should contact the competent authorities to conduct mine clearance to
assess the risk and provide confirmation of the safety of explosive objects before construction.
- Site clearance activities, create construction ground, transporting waste due to clearance of
vegetation, soil stone will create impacts: Dust, exhaust gas, noise, vibration affect
construction workers, people in the subproject area; Wastewater from worker activities and
stormwater runoff with high suspended solids content due to loss of vegetation cover will
affect the quality of receiving water and soil quality in the subproject area; Solid waste of
workers and waste from clearing vegetation cover if not managed well will affect the
surrounding environment and landscape of the subproject area.
- Another activity in the subproject preparation phase is geological exploration drilling. In total,
the geological survey unit has drilled 17 boreholes with the depth of 11-40m at the subproject
locations (Specific positions are presented in the feasibility study report of the subproject) to
understand geological conditions and aquifer characteristics, at the same time conducting
geophysical karota in the borehole, If the drilling process is not handled properly, it will affect
the quality of groundwater sources due to the infiltration of pollutants through boreholes to
groundwater.
- The impacts related to construction activities such as noise, vibration, air pollution due to dust
and emissions, water pollution, waste, plant and animal ecosystems, social risk due to site
clearance and construction affecting traffic safety, community infrastructure, risk of accidents,
community conflict and infectious disease and disruption of business activities have been also
determined and assessed in the report. Moreover, during the construction process, it may be
blocked water source to construct the works of the subproject which may affect productivity
and water resource serving agriculture of 7 communes in the subproject area. The works of the
subproject are scattered in the 7 communes of 6 districts and the implementation location is
mainly on agriculture land which is far from residential and important areas and does not
affect forestry land; therefore, the negative impacts of the subproject are assessed at low to
average level and can be controlled by a suitable management plan. However, there are still
long term impacts on the subproject area such as land mine and dumping sites which can cause
degradation of agricultural land, unused hill land, and vacant land within the temporarily
borrowed land of localities in the subproject area during the process of using.
(c) Negative impacts during the operational stage:
- Dam safety risks can occur in the event of a broken dam or flood discharge causing flooding
downstream; Accident related to drowning;
- Domestic waste from eco-tourism activities in some reservoirs has developed this type of
service;
- The implementation of the subproject does not increase the capacity of the reservoir, does not
increase the irrigated area in the downstream area and does not affect the crop structure in the
subproject area. However, the repair of the culverts has been damaged and the leakage of
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 14
water will be overcome to ensure more stable irrigation water regulation and will provide
adequate irrigation water for the subproject area in the drought season, restore the volume and
initial irrigated area of the reservoir, At that time, the cultivation of agricultural crops for areas
that lack water in the drought season will be restored, on the other hand, when there is enough
irrigation water and water is frequently circulated, it leads to changes in living environment,
creating conditions for harmful organisms and plants to grow, This is also the cause of
outbreaks of diseases and pests for agriculture. Therefore, it will increase the number of
pesticides and fertilizers in the area of water shortage and increase the pest in the subproject
area. On the other hand, the use of chemicals to kill termites in the dam body if not well
managed also affects the surrounding environment if due to residue and disposal is not in the
right place or termite-killing chemicals are swept away by rainwater. Therefore, an integrated
pest management (IPM) plan for this subproject is required;
- During maintenance, repairs can stop provision of irrigation water temporarily affecting
production and livestock of downstream people..
8. Mitigation measures for impacts: To manage these impacts, an Environmental and Social
Management Plan (ESMP) has been prepared as an integral part of this ESIA report with proposed
institutional arrangements for impact management, environmental management and monitoring,
reporting requirements, capacity building, budgeting for implementation. The social assessment report
(SA) is made to aim at the following objectives: (i) Identify social issues and potential impacts of
proposed infrastructure investment items, (ii) Provide input of social aspects and participation in the
feasibility study project design and basic design phase, paying attention to the needs of affected
communities, (iii) Provide specific recommendations on infrastructure investment management with
high social risks and identify criteria and methodologies to determine whether the investment is
socially acceptable or not, (iv) The study provides a basic source of data for evaluating project
completion results. A separate Resettlement Action Plan/Compensation and Resettlement plan has
been prepared to deal with the impacts of land acquisition.
Preparation phase:
- Implement RAP; SA.
- Integrating environmental mitigation measures into technical design.
- Consult people about the actual time of repairing dam with purpose of mitigating impacts of
three phases: preparation, construction of subproject and operation of subproject.
- Demining and demining should be carried out strictly and fully in the subproject
implementation area. It is necessary to hire a unit with full functions and tasks of according to
state regulations.
- During the geological exploration drilling process, it is necessary to strictly follow exploration
drilling techniques. The boreholes need to be backfilled ensuring no spillage of pollutants to
the drilled hole and infiltrationinto the aquifer.
- Waste from the site clearance process has a small quantity but needs to be transported in the
right place or coordinate with the local authorities to handle the regulations..
- Putting provisions on implementing mitigation measures into construction bidding documents
and construction contracts.
Construction phase:
- Require contractors to strictly and fully implement mitigation measures for the impacts
mentioned in the Environmental and Social Impact Assessment Report, social impact
assessment report of the subproject and negative impacts during construction phase will be
minimized through ECOPs and mitigation measures for site-specific impacts.
Operation phase:
- During the operational process, the upgraded and repaired items of the subproject such as:
anti- seepage on dam body, treatment of loss of water due to damaged items will improve the
capacity of storing of water and ensure the capacity of regulating water through repairing of
intake. Thus, it will increase irrigation area that has been not provided enough for designed
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 15
irrigation area because of losing water of reservoirs. Therefore, introduction and promotion of
application of integrated pest management in the areas of irrigation services are necessary.
- PPMU frequently monitor to ensure that the damaged structures will be repaired and restored
in accordance with approved dossier. Reservoir management units regularly check dam safety,
patrol the Reservoir area to avoid drowning accidents; forecast and warning to authorities and
people when there are extreme weather phenomena; Regularly collect garbage at the reservoir
area, for reservoirs operating in tourism business, there must be garbage bins and coordinate
with garbage collection units in localities to collect daily. On the other hand, the PPMU and
the reservoir management and operation units must coordinate with the local authorities to
carry out the training on emergency response plans for local authorities and local people..
- For the impact of increased use of pesticides, agencies: Plant Protection Department of Phu
Yen province; Plant Protection Station of districts under the subproject; and the People's
Committee of 7 communes under the subproject must comply with the contents of the Pest
Management Plan (IPM) of this subproject. In addition, farmers in the process of cultivation
need to select good varieties, regularly check pests and diseases, use pest control measures
recommended in the pest management plan (IPM) such as: (i) Cultivation measures: Soil
preparation, field cleaning; rotation, intercropping; proper time; sowing and planting
reasonable density; use fertilizer properly; Appropriate care measures (ii) Use of breeds:
Traditional varieties and proposed varieties suitable for local conditions (iii) Biological
measures: taking advantage of using natural enemies available in the field, using bioproducts
…(iv) Chemical measures: use safe pesticides with natural enemies; follow economic
threshold ... Follow safety guidelines on pesticide storage, transportation and use to minimize
negative environmental and health impacts...
9. Preparation of a report on environmental and social impact assessment. The subproject is
designed and implemented in accordance with the DRSIP project's Environmental and Social
Management Framework (ESMF) approved by WB, and also ensure compliance with the current
environmental regulations of the GoV. The purpose of the Environmental and Social Impact
Assessment Report is to determine the importance of environmental and social issues in the decision-
making process by clearly assessing the environmental and social consequences of proposed research
before the implementation of subproject activities. Early identification and characterization of the
positive and negative environmental and social impacts that help the community and local have an
assessment of the subproject's environmental and social impacts propose conditions to be applied to
mitigate or mitigate risks to those impacts. Activities in the preparation, construction and operation of
the subproject are analyzed, evaluated and given solutions to prevent and minimize the level of
impacts on the environment and living of the residents direction. Results of screening of 8/8 reservoirs
all meet the criteria of the project and subproject is classified as category B in terms of environment
assessment. The subproject triggers 04 safeguards policies, including: OP/BP 4.01 on environmental
assessment, OP 4.09 on pest management, OP/BP 4.37 on safety of dams and OP/BP 4.12 on
involuntary resettlement.
10. Institutional Arrangements: The Ministry of Agriculture and Rural Development (MARD) is
responsible for implementing and managing the entire project. Provinces that perform repairs to dams
in Component 1 and MARD will coordinate activities with the Ministry of Industry and Trade and the
Ministry of Natural Resources and Environment in Component 2. Central Management Board
(CPMU) under MARD is responsible for coordination and overall monitoring of the project. The
implementation of repairs and preparations for the dam safety plan, including protection and
entrustment, is focused on provincial authorities. Provincial People's Committee is the chair of the
provincial level. The Provincial Project Management Unit (PPMU) is responsible for managing and
monitoring the works with support from CPMU. Management Unit of Dam rehabilitation and Safety
Improvement (WB8), Phu Yen province (hereinafter referred to as PMU) responsible for
implementing and monitoring implementation ESIA. The PMU ensures that documents and contracts
for valid bidding include environmental provisions for contractors to comply with. The contractor will
carry out construction activities and comply with the environmental agreements agreed in the contract.
In particular, the contractor will prepare an Environmental and Social Management Plan for the PMU
to review and approve before starting construction. PMU and consultants will closely monitor
compliance with contractor's agreed mitigation measures. In addition, the contractor's compliance will
be closely monitored by Department of Natural Resources and Environment of Phu Yen province,
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 16
local authorities and people.
11. Capacity building: During the implementation process, PPMU receives support from CPMU on
the World Bank's environmental safety policy. The PPMU's safety policy staff has been trained by
CPMU in coordination with the World Bank experts to guide the project's environmental safety issues
and World Bank's safety policies. related to the project implementation included: OP 4.01
(Environmental Assessment), IFC's General Guide to Environment, Health and Safety (EHS), OP 4.04
(Natural Habitats), OP 4.10 (Indigenous peoples) and OP 4.12 (involuntary resettlement)…
12. During the implementation of the subproject, training and training on environmental safety
policies for Construction Supervision Consultant (CSC) and EHS staff of the contractor are carried out
regularly to update the relevant information. For PPMU, during the implementation of the subproject,
the subproject will receive regular support from CPMU's independent consultancy and technical
assistance on the management of dam safety risk issues, monitoring the implementation of the ESMP.
13. Public consultation: The subproject has applied different methods and techniques to conduct
public consultations, consultations with people affected and local NGOs by the subproject, including
a) community meetings, b) household survey, c) focus group discussion, field investigation and
interviewing people providing key information. The use of these methods and techniques to enhance
the reliability and effectiveness of feedback from the subproject stakeholders, Especially the local
people are affected and make sure that (i) Affected people receive full information about the
subproject; and (ii) All affected people are involved in the process of freedom consultation, advance
notice and provide complete information during the preparation and implementation process. In
September 2018, the sub-project management board organized a total of 7 community consultation
meetings in the sub-project communes. And there have been official documents sent to the People's
Committees of 7 communes under the subproject to community consultation on environmental and
social protection issues during the subproject implementation process. Participants in community
consultation sessions are representatives of local units and organizations such as: representative offices
of People's Committees, in charge of neighborhoods, veterans' associations, women's union, youth
union, the eldly group ... and representatives of affected households.
14. Cost estimation for ESMP implementation: ESMP implementation cost estimate includes costs
for ESMP monitoring, mitigation measure implementation and capacity building. Mitigation measure
implementation cost shall be included in the construction cost. The following table presents cost
estimates for monitoring and capacity building.
Table 2: Cost estimate for ESMP implementation
No. Cost item Amount (VND) No.
1 Costs for environmental monitoring VND 685,115,631.2
2 Cost of capacity building training VND 102,000,000
3 Costs for environmental treatment works VND 226,000,000
4 Cost for IPM program VND 82,250,000
5 Contingency (10%) VND 109,536,563.12
6 Total VND 1,204,902,194.32
Grievance Redress Mechanism (GRM): Complaints related to the subproject will be resolved by
negotiating to get an agreement with the people. Complaints will be negotiated by the parties at all
three stages (People's Committee at commune, district and provincial levels) before submitting to the
court in accordance with the 2011 Complaint Law. PPMU will pay all administrative and legal costs
related to the receipt of the complaint because this payment cost is included in the subproject budget.
15. Information dissemination: In compliance with policy of OP 4.01 and policies of World Bank on
access to information: from the stage of preparing the subproject, relevant information has been
disseminated to community through mass media. PPMU disseminated information and directly
consulted community in September 2018 and sent consultation information to local organizations. The
draft of ESIA in Vietnamese was sent to CPCs to disseminate information and consult in October
2019. The final version is expected to be disclosure in August 2019 through the website of CPO and
website of the Bank in English before appraisal of the subproject.
16. Conclusion: Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
may have negative impacts in the subproject phases, but due to the small scale of construction items,
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 17
impacts will occur in a short time, The scope in the area is small and insignificant, so the sub-project
has proposed feasible mitigation measures, suitable to the natural, socio-economic conditions and the
conditions of subproject management and construction at localities.
17. The Environmental and Social Monitoring and Management Plan is set up to monitor impacts, to
help stakeholders and local authorities to regularly update the implementation process of subproject
items. The monitoring system is prepared and approved by the WB will apply in the implementation
of subproject, construction supervision consultants regularly check and prepare monthly reports to
submit PPMU.
Subproject: dam rehabilitation and safety improvement (wb8) Phu Yen province
Report environemental and Social impact assessment (ESIA) 18
CHAPTER I: PROJECT INTRODUCTION
18. The Government of Vietnam received a credit from International Development Agency (IDA)/
World Bank (WB), via Loan Agreement No.5749-VN signed on 8 April 2016 for financing Dam
Rehabilitation and Safety Improvement Project. The project is implemented from 8 July 2016 until 30
June 2022.
19. The WB funded Dam Rehabilitation and Safety Improvement Project (DRSIP/WB8) was endorsed
by the Prime Minister in the project list “dam rehabilitation and safety improvement” in Decision
No.1858/QD-TTg dated 2 November 2015 and the Project Feasibility Study Report was approved by
Minister of Agriculture and Rural Development in Decision No. 4638/QD-NN-HDQT dated 9
November 2015.
20. The project has 03 components and total investment cost of USD 443 million, including USD 415
million of ODA loan from WB and USD 28 million of counterpart fund. The funding allocations to
Component 1, 2 and 3 are USD 412 million, USD 20 million and USD 11 million respectively.
- Component 1: Dam safety rehabilitation, budget: USD 412 million.
- Component 2: Dam safety management and planning, budget: USD 20 million.
- Component 3: Project management support, budget: USD 11 million.
21. The project is implemented in three regions: i) Northern region covering the whole Red River
Delta; ii) Central Region covering Central Northern and Middle areas and Central Southern coastal
areas; and iii) Central Highlands area. These are regions with a large number of dams which were built
a long time ago, have rarely received investments for big repair or rehabilitation while being
vulnerable to natural disasters and subject to dam safety incidents.
22. The project shall assist to restore structure of the existing irrigation dams, most of which were
built in the 1980s and 1990s. About 90% of the dams proposed to be rehabilitated are earth and small
ones with height lower than 15m and design capacity of smaller than 3 million cubic meters (MCM).
The proposed project will not support to change the structure or expand the dam for safety securing.
Rehabilitation shall be limited to restoring structure of main and auxiliary dams, stabilizing dam
slopes with concrete slabs or stone paving, strengthening and expanding the existing spillways to
increase discharge capacity, renewing the existing intakes, replacing equipment and power system of
the outlet/discharges and controlled spillway, uniting for leakage control and current access road
improvement.
1.1. Approach and method of implementation
23. The Environmental and Social Impact Assessment (ESIA) was implemented in accordance with
World Bank safeguard policies and in accordance with the Environmental and Social Management
Framework approved by the World Bank. The ESIA process have been carried out in accordance with
the initial screening process to classify the magnitude of the subproject's environmental and social
considerations, impact assessments, propose mitigation measures and establish implementation plan.
And the consultation with stakeholders and information disclosure were also mainstreamed in this
process. In addition, ESIA is also implemented in accordance with the guidelines of relevant safeguard
policies of the World Bank and regulations of the Government of Vietnam. The purpose of
implementing ESIA is to determine the scope, extent and importance of the environmental and social
issue of the implementation of the project, being suitable with the nature, activities and characteristics
of the subproject area to propose management plan and suitable implementation institution to propose
the positive effects and control negative impacts as well as risks from the subproject.
1.1.1. Methods of social impact assessment
24. Social assessment (SA), which is implemented in parallel with environmental assessment of the
sub-project, has two objectives: First, to review potential and negative impacts of sub-projects on the
basis of sub-project implementation plans, and second, to seek potential negative impacts from
designing solutions and proposing community development activities that are relevant to the
development objectives of the sub-project. Identification of negative impacts, and consultations with
localities, Government agencies, project stakeholders, etc. will be undertaken to ensure that affected
people are compensated and supported in a satisfactory and timely manner so that at least their socio-
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 19
economic activities are recovered to a level equivalent to that before the project implementation and,
in the long term, their livelihoods will not deteriorate, as a result of the sub-projects.
25. A part of the social assessment is ethnic minorities (EM) living in the sub-project area - they are
assessed and confirmed their presence in the sub-project area through the screening of ethnic
minorities (according to OP 4.10 of the Bank), the people will be informed prior to consultations in an
appropriate manner to determine the support to the community when implementing the sub-project.
Ethnic minority screening is implemented in accordance with the World Bank's OP 4.10 guidelines,
and is conducted within the scope and area of social assessments corresponding to the scope of the
environmental assessment (OP 4.01).
26. A Gender analysis is also implemented as part of the SA to describe gender characteristics in the
sub-project area, enabling the integration of gender issues into promoting gender equality and further
enhancing the effectiveness of developing the sub-projects in particular, and the whole project in
general. Depending on the size of the Project's potential impacts, which have been identified, and the
project development objectives, a gender action plan and a monitoring plan for gender action plan
have been prepared.
27. To ensure that all potential impacts can be identified during project preparation, SAs are
conducted through consultations with various sub-projects stakeholders. An important part of concern
is households, who are potentially affected by the Project (both positively and negatively). The
techniques used to make an SA include (i) reviewing secondary data, (ii) field observations; (iii) focus
group discussions/ community meetings, (iv) in-depth interviews, and (v) household surveys.
1.1.2. Environment impact assessment method
28. During the research, survey and preparation of ESIA report, the consultant team used a
combination of the following research methods.
(1) Rapid Assessment Method
29. The Rapid Assessment Method was issued by the World Health Organization (WHO) in 1993.
The rapid assessment method is based on the nature of materials, technology, the rules of natural
processes and experience to determine the pollutant load.
30. In Vietnam, this method has been introduced and applied in many ESIA studies, which performs
relatively accurately the calculation of pollutant load under limited conditions of instrumentation and
analysis. In this report, the pollutant load coefficients are taken from the WB's Environmental
Assessment Sourcebook (Environmental Assessment Sourcebook, World Bank, Washington D.C,
August 1991).
(2) Impact matrix method
31. The correlation between the impacts of the project activities on each issue and each environmental
component are build and shown in the impact matrix. Based on that, impact studies will be focused on
details.
(3) Comparative method
32. The comparative method is used to evaluate the environmental quality, effluent discharge quality,
pollutant load, etc. on the basis of comparison with relevant environmental regulations and standards,
regulations specified by MONRE and MOH, as well as related research and experiment topics.
(4) Description of environmental system
33. Project components that affect the environment are identified. And waste streams and related
environmental issues are also fully identified for detailed assessment.
(5) Listing method
34. This method has been used extensively (since the National Environmental Protection Agency -
NEPA has been established in some countries) and yielded positive results because of its many
advantages, such as clear approach, acute system during system analysis and evaluation. There are two
main types of listing: one type is a listing table describing environmental components to be studied
and information on measurement, prediction and evaluation, and another type is a simple listing table
consisting of environmental components to be studied that are potentially impacted.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 20
(6) System analysis method
35. This method is applied quite extensively in environment sector. The advantage of this approach is
the comprehensive assessment of impacts, which is very useful in identifying impacts and sources of
wastes. This method is applied on the basis of considering sources of wastes, sources of impacts,
affected objects, environmental components, etc. as elements in a system that are closely related to
each other. From there, the impacts will be identified, analyzed and evaluated.
(7) Community consultation method
36. This method is used during interviews with local leaders and people to collect necessary
information for the Project's ESIA work and present benefits and possible negative impacts of the
Project to the environment and people's life. Based on that, feedback on the project and local people's
wishes will be aggregated.
37. In addition, local officials and local people will be exchanged and interviewed about socio-
economic development situation, cultivation customs and environmental sanitation.
(8) Methods of reference, collecting and analyzing information and data
38. This method aims at identifying and assessing natural and socio-economic conditions in the
project area through the data and information collected from different sources such as statistical
yearbooks, reports on socio-economic situation of the area, current status of the environment and
relevant research works.
(9) Field survey method
39. Field survey is required when carrying out the assessment of social and environmental impacts to
determine the current status of the project area, related objects, and surveys to select locations for
collecting samples, survey of water supply, drainage, electricity supply, etc.
40. The consulting firm has carried out topographical and geological surveys and collected hydro-
meteorological data for design in accordance with the current standards of Vietnam. These survey
results are used to assess the natural condition of the sub-project area.
(10) Expert panel method
41. This method is carried out based on the knowledge and experience of environmental science of
environmental impact assessment experts from the consulting firm and other scientific research
agencies.
(11) Sampling and analysis method in the laboratory
42. Sampling and analyzing environmental components (soil, water, air) are indispensable in
identifying and assessing the quality of the background environment in the sub-project area.
43. After the field survey, the sampling and analysis program will be developed with the following
main contents: sampling locations, measurement and analysis parameters, necessary equipment and
tools, implementation time, sample preservation plan, analysis plan, etc.
44. For Phu Yen sub-project, the consultant coordinated with the Environmental Monitoring Agency
to monitor, collect and analyze samples of air, water and soil in the area of seven reservoirs to evaluate
the quality of environment components. Collecting, analyzing and preserving samples are carried out
in accordance with current Vietnamese standards.
1.2. Implementation arrangement of ESIA report
a. Management of the subproject
- Management unit of dam rehabilitation and safety improvement Phu Yen province;
- Represent: Mr.Cao Dinh Huy – Position: Director
- Address: No. 112 Le Trung Kien, Ward 1, Tuy Hoa City, Phu Yen Province
- Phone: 0257.3843921 - Fax: 0257.3818255
b. Consultancy unit establishing report ESIA
- Thang Long infrastructure technology construction consultant joint stock company.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 21
- Represent: Mr. Tran Trung Kien - Position: Director.
- Address: No 72/1/4, nest 4, Giap Nhat, Nhan Chinh ward, Thanh Xuan, Ha Noi.
- Phone: 024.3575 6806 - Fax: 024.3575.6806
c. Coordinating unit to implement environmental monitoring:
- Thai Duong environmental treatment and monitoring joint stock company
- Address: No. 24, Lane 18, Phan Van Tri Street, Quoc Tu Giam Ward, Dong Da District,
Hanoi City
- Phone: 024 3573 7766 Fax: 024 3577 3403
- Certificate of Eligibility for Environmental Monitoring Service No.: VIMCERTS 163 issued
in accordance with Decision No. 194 / QD-BTNMT dated 13/5/2016 of the Minister of
Natural Resources and Environment on the certificate of eligibility event of environmental
monitoring service..
d. List of participants in the preparation of ESIA reports
- Participants in the preparation of ESIA reports include: managers, specialized staff of the
subproject owner and consulting unit included:
Table 3: List of persons participating in implementation
No. Full name Degree Position
1 Vu Kieu Thu Master Team leader / Environmental specialist
2 Le Thi Nhan Master Environmental Specialist No.01
3 Nguyen Hoài Nam Doctor Environmental Specialist No.02
4 Duong Thi Phuong Thuy Master Ecology specialist
5 Nguyen Ngoc Hop Bachelor Support staff
6 Duong Thi Van Huong Bachelor Support staff
7 Truong Xuan Truong Master Vice-team - Social expert
8 Quach Thi Xuan Doctor Expert on community development and policy
institutions
9 Phi Thi Hanh Bachelor Support staff
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 22
CHAPTER II: DESCRIPTION OF SUBPROJECT
45. Subproject: dam rehabilitation and safety improvement (wb8) Phu Yen province under the project
of dam rehabilitation and safety improvement, WB8 is financed by the World Bank through the Credit
Agreement No. 5749-VN dated on 08th April, 2016 with the subproject implementation duration from
2017 to 2022. Based on Decision No. 4638 / BNN-HTQT dated 09th November 2015 by Ministry of
Agriculture and Rural Development, the Dam rehabilitation and Safety improvement subproject in
Phu Yen province is implemented in 07 communes under 6 districts: Tuy An, Dong Xuan, Đong Hoa,
Song Hinh, Tay Hoa, Son Hoa.
2.1. Objective of the subproject
a. Objective of the project:
46. Support to implementation of program to ensure safety of water reservoirs through rehabilitation
and upgrading of prioritized dams, strengthening management capacity and safe operation of dam to
protect population and economic - social infrastructure in downstream area.
b. Specific objectives:
- Ensuring safety for reservoirs of Dong Tron, Phu Xuan, Dong Khon, Ea Din1, Gieng Tien,
Hoc Ram, Hon Dinh and Hoa Thuan;
- Ensuring safety and serving production and life for people in the downstream area, including
communes of An Nghiep, Xuan Phuoc, Hoa Xuan Tay, Ea Bar, Son Ha, Hoa Tan Tay, Son
Dinh and residents of the surrounding areas are affected;
- Ensuring proper implementation of the Ordinance on protection of irrigation works;
- Solidifying the dam surface, the road surface to the dam, installing monitoring and supervision
equipment to facilitate the exploitation, management and promotion of the efficiency of the
reservoir;
- Improving environmental landscape, creating infrastructure for economic development in the
subproject area.
2.2. Location of subproject implementation
47. Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province consist of 08
works at the following locations:
Table 4: Geographic location of reservoir under the subproject
No. Name of
reservoirs
Geographical location
Commune District Coordinates
1 Dong Tron An Nghiep Tuy An Main dam route with coordinates:
13°16'24.84" N and 109° 9'48.32" E.
2 Phu Xuan Xuan
Phuoc Dong Xuan
Main dam route with coordinates:
13°17'18.63" N and 109° 2'16.13" E.
3 Dong Khon Hoa Xuan
Tay Dong Hoa
Main dam route with coordinates:
12°55'29.52" N and 109°19'46.14" E.
4 EaDin 1 Ea Bar Song Hinh Main dam route with coordinates:
12°56'24.76" N and 108°50'13.93" E.
5 Gieng Tien Sơn Ha Sơn Hoa Main dam route with coordinates: 13°
2'58.11" N and 109° 1'16.05" E.
6 Hoc Ram Hoa Tan
Tay Tay Hoa
Main dam route with coordinates:
12°56'18.26" N and 109°16'53.98" E.
7 Hon Dinh Hoa Xuan
Tay Dong Hoa
Main dam route with coordinates:
12°55'15.42" N and 109°20'30.10” E.
8 Hoa Thuan Son Dinh Son Hoa Main dam route with coordinates:
13°12'15.04" N and 109° 2'53.20" E.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 23
Figure 1: Locations of subproject reservoirs
2.3. Status of works and construction solutions
48. Some of the main specifications of the construction under the subproject are summarized in the
following table.
Table 5: Summary of some specifications of reservoirs
No. Name of
reservoirs Commune
Basin
area
(km2)
Capacity
(106 m3)
Length of
soil dam
(m)
Height of
dam (m)
1 Dong Tron An Nghiep 69.5 19.55 270 29
2 Phu Xuan Xuan Phuoc 126 11.2 516 23.8
3 Dong Khon Hoa Xuan Tay 7.51 2.72 303.86 16.2
4 EaDin 1 Ea Bar 4.5 1.05 147 13
5 Hoc Ram Hoa Tan Tay 6.81 2.91 256 17.8
6 Hon Dinh Hoa Xuan Tay 6 0.71 375 4.7
7 Gieng Tien Son Ha 3 0.55 317 7.6
8 Hoa Thuan Son Dinh 2.06 0.47 200 9
49. Information on the current status of reservoirs and construction items of the subproject is
presented in the following table:
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 24
Table 6: Summary of current information of reservoirs and construction works of the Subproject
Location Current status Construction works Pictures
1. Dong
Khon
reservoir
1. Main dam
- The dam surface is soil, has not been
reinforced, so it often erodes;
- There are 12 termite nest on the dam
body (01 upstream and 11
downstream);
- The downstream slope has appeared
seeping through the soil dam causing
muddy, erosion slope, unsafe for
works;
- The dry masonry layer is used for to
reinforce the upstream slope, has
been peeled, concave convex and
landslide;
- The grass protecting downstream
slope has been damaged and
drainage ditch on the slope is not
existing;
- Downstream drainage pipes have
been damaged, eroded, filled with
sand and sediments;
- There is no monitoring device at the
dam body.
2. Spillway:
- Through actual survey, the spillway
still works normally. Therefore, it is
not necessary to repair
3. Intake:
- Bearing intake appeared vertical
seepage phenomenon from
upstream to downstream;
- The operation mechanics of
upstream flat valves has been badly
damaged, Operation is difficult and
not watertight, there is no van house.
1. Main dam
- Seepage treatment for dams and background
by inclined wall, tray foot.
- Upstream slope: Reinforced with on-site M200
pour concrete slabs, dimension of (2x2)m,
12cm thickness with drainage holes,
underneath the cement bag lining prevents loss
of cement mortar water, followed by a layer
macadam of 10cm thickness, bottom lined
geotextile layer.
- Downstream slope: anti-erosion by growing
grass, grass plots (5x5m) with drainage
ditches, Slope coefficient m = 2.75.
Embankment at the slope of the dam foot
creating banquette at elevation 15.0m, wide
B=15.0m. Downstream drainage by the
downstream slope sand filter, Drainage in
downstream area by sand filter combining with
dry masonry, elevation of drainage in
downstream +14,00m + 14.00m, embankment
downstream slope by stone do not use mortar
at the downstream of the dam at + 10.30m
elevation.
- Dam crest: Concrete M200, 2x4cm stone with
thickness of 20cm, Curb side downstream with
concrete M200, upstream is a wave breakwater
made of concrete M200, high 0.75m, thickness
of 0.5m.
2. Spillway
- On the basis status of spillway and calculation
of hydrology and structure of spillway, it
ensures the stability. Therefore, the proposal
keeps status of the old spillway.
3. Intake
- Prolonged the intake pipe with reinforced
Status of Main dam, Dong Khon reservoir
Overflow threshold, spillway and energy consumption
tank Dong Khon reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 25
Location Current status Construction works Pictures
4. Management road:
- Management road to works length L
= 2.300m by soil, often muddy,
eroded, very difficult to travel in the
rainy season, making it difficult to
manage and operate the project
5. House under management
- There are currently no house under
management
concrete M300 toward downstream, Combined
energy dissipitation’s tank beyond the intake.
Build houses to cover the intake tower valves
and build railing of the bridge connected to
house to cover the intake tower valves .
4. Management road:
- Construction management road and operation
of the works, serial from the end of the
existing concrete road to the dam foot of the
Dong Khon reservoir.
- Total length of road L = 2,241.60m.
- Width of road surface B = 4m including
concrete 3m wide and 02 road curb is made of
soil each side 0.5m. The structure of M250
cement concrete road is 18cm thickness,
plastic tarpaulin lining below. The concrete
road surface is divided into 5m long sections,
with elastic slot.
5. House under management:
- Combining the construction of intake operating
space to do House under management
Status of intake, Dong Khon reservoir
Status of Management road, Dong Khon reservoir
2. Dong
Tron
reservoir
1. Main dam
- The dam surface is made of
concrete, not damaged;
- Soil dam at the left shoulder position
of the spillway was infiltrated,
causing water to accumulate in the
downstream slope. The length of the
permeable section is about 89m;
- The embankment stone of the
upstream slope was peeled, convex
and concave
- The grass protecting downstream
slope has been damaged and
1. Main dam
- Seepage treatment of dams and background by
drilling grouting.
- Downstream slope reinforced erosion by
planting grass under the dam body, drainage
ditch (5x5) m, Slope coefficient m = 2.75m.
Downstream drainage with stone of drainage
water, downstream foot combined with
embankment, Top elevation of stone pile is +
15.20m, elevation of embankment downstream
slope is at + 16.20m.
2. Spillway
- On the basis of the current status of the flood
Status of Main dam, Dong Tron reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 26
Location Current status Construction works Pictures
drainage ditch on the slope is not
existing;
- Downstream drainage pipes have
been damaged, eroded, filled with
sand and sediments.
- Saturation monitoring equipment for
dam body is no longer usable
2. Spillway:
- Through field survey at spillway
scene is still working normally.
Therefore, there is no need to fix.
3. Intake:
- Through field survey at the intake
still working normally. Therefore,
there is no need to fix.
4. Management road:
- Has been concreted and quality
assurance.
spillway and calculation and check hydraulic
calculations and spill structures, ensure
stability. Therefore, the old spillway remains
the same. However, to ensure flood drainage,
the frequency of P = 0.01%. Need to build a
new trouble spillway .
3. Intake
- On the basis of the current status of the flood
spillway and calculation and check hydraulic
calculations and intake structures, ensure
stability. Therefore, keeping the old intake.
4. Management road:
- Management road and operation works were
solidified by concrete to ensure quality, so the
status quo will road remain the same.
Status of Spillway, Dong Tron reservoir
Status of intake, Dong Tron reservoir
Status of Management road, Dong Tron reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 27
Location Current status Construction works Pictures
3. Ea Din 1
reservoir
1. Main dam
- The dam surface is made of concrete
combined with a local road, the road
is not renovated and the quality is
not good, so it has subsided and
peeled.;
- The upstream slope was not
reinforced, so it eroded and not flat;
- Downstream drainage pipes have
been damaged, eroded, filled with
sand and sediments .
2. Spillway:
- The overflow surface of concrete
(the location combined with roads)
has just been constructed and of
good quality;
- In the rainy season, the flow through
the spillway frequently, making the
spillway to manage the dam
operation and the local traffic are
obstructed, have to wait for the
floodwaters recede then can
circulate.
3. Intake:
- Through field survey at the intake
still working normally. Therefore,
there is no need to fix.
4. Management road:
- Has been concreted and quality
assurance.
1. Main dam
- Upstream slope is reinforced with concrete
slabs M200 pour in place, the sheet is sized
(2x2) m, 12cm thickness there is drainage hole,
beneath the lining of cement bags is the anti-
dehydration of cement mortar, followed by a
layer macadam of 10cm thickness and a layer
the bottom is geotextile lining.
- Downstream slope erosion control by planting
grasses, drainage ditches (5x5) m, Slope
coefficient m= 3.5. Downstream drainage by
drainage ditch, drainage stones, Downstream
embankment slope at elevation of + 46.50m.
- Dam crest: According to the status quo, flush
curb of downstream edge made of reinforced
concrete M200, in the upstream, the wave
breakwaters made of concrete M200 height of
1m and wall thickness of 0,3m.
2. Spillway
- Based on the current state of the spillway and
calculation of hydraulic and structural tests,
spillway guaranteed stability. Therefore, the
proposal remains the same spillway old.
3. Intake
- Based on the current state of the intake and
calculation of hydraulic and structural tests,
intake guaranteed stability. Therefore, the
proposal remains the same intake old.
4. Management road:
- The operation management road was solidified
by quality concrete so it will remain the same.
5. Bridge over spillway
- To ensure the life and property of the people in
the subproject area, When going through the
spillway of Ea Din1 reservoir in the rainy
season, it is necessary to build a new bridge
Status of Main dam combined Management road, Ea
Din 1 reservoir
Status of Spillway, Ea Din 1 reservoir
Status of Energy consumption tank , Ea Din 1
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 28
Location Current status Construction works Pictures
over spillway. reservoir
4. Gieng
Tien
reservoir
1. Main dam
- The surface of the dam made is soil
and has not been concreted so it is
often eroded;
- The upstream slope was not
reinforced, so it eroded and uneven;
- The grass protecting downstream
slope has been damaged and
drainage ditch on the slope is not
existing;
- Downstream drainage pipes have
been damaged, eroded, filled with
sand and sediments;
- The current level is lower than the
flood control calculation result for
elevation spillway threshold and
current spillway size
2. Spillway:
- The channel leading to the spillway
has not yet been reinforced, partially
eroded;
- Threshold spillway, spillway body,
energy consumption tank made of
stone, degraded, unsafe and not
sustainable.
3. Intake:
- Water intake type step, open and
close by the button system, No
sheltered houses, There is no control
bridge, located in the center of the
reservoir, No guarantee of operation
safety, the intake body of leaked is
not enough for irrigation.
4. Management road:
- Length Management road is L =
1. Main dam
- Upstream slope is reinforced with concrete
slabs M200 pour in place, The sheet is sized
(2x2) m thick 12cm There is drainage hole,
Underneath lining cement bag prevent
dehydration of cement mortar, next is the
macadam layer of 10cm thickness, the bottom
is geotextile lining.
- Downstream slope erosion control by planting
grasses, drainage ditches (5x5) m, Slope
coefficient m= 2,5. Downstream drainage with
stone embankments and roofs of downstream
slope, Elevation downstream embankment
+38,96m.
- Dam crest: M200 concrete, stone 2x4cm thick
18cm, flush curb of downstream edge made of
reinforced concrete M200, in the upstream, the
M200 concrete breakwater wall is 0.84m high
and 0.3m thick.
2. Spillway
- Based on spillway status and inspection
calculations, the proposed spillway repair
technical solution is as follows: Newly
rebuilding spillway with concrete M200 and
reinforced concrete M200.
3. Intake
- demolition of old intake, build new intake with
D600mm steel pipe, wrapped outside
reinforced concrete M200 25cm thick.
- Appearance: intake is circular, pressure-flow,
with valves opening and closing downstream.
4. Management road:
- Construction management road and operation
of the works, serial from the end of the
existing concrete road to the dam foot of the
Status of Main dam, Gieng Tien reservoir
Status of Spillway, Gieng Tien reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 29
Location Current status Construction works Pictures
180m mode is soil, often muddy,
erosion, It is very difficult to travel
in the rainy season, which makes it
difficult to manage and operate the
subproject.
Gieng Tien Reservoir dam.
- Total route length L=180,0m.
- Road surface width B=4m including concrete
reinforcement 3m and soil margins 02 sides on
each side 0.5m. The structure of M250 cement
concrete road bed is 18cm thick on plastic
tarpaulin lining. The concrete pavement is
divided into 5m-long sections with elastic
joints in the middle of the sections.
Status of Energy consumption tank , Gieng Tien
reservoir
Status of Canal behind the drain to get water, Gieng
Tien reservoir
Status of Management road, Gieng Tien reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 30
Location Current status Construction works Pictures
5. Hoa
Thuan
reservoir
1. Main dam
- The wave retaining wall made of
stucco stone has been broken and
peeled off and needs to be repaired;
- The anhydrous stone layer
reinforcing the upstream slope has
been peeled, sunken, and not flat;
- The grass protecting downstream
slope has been damaged and
drainage ditch on the slope is not
existing;
- Downstream drainage pipes have
been damaged, eroded, filled with
sand and sediments.
2. Spillway:
- Spillway threshold, spillway body,
energy consumption tank made of
reinforced concrete, The present is
good. But in terms of rain and flood,
currently there is no bridge to cross
spillway, so the problem of traveling
and rescue is facing many
difficulties..
3. Intake:
- The intake pipe drain is leaking
dehydration, The downstream taper
valve has been damaged and cannot
be watertight, Valve house has been
damaged.
4. Management road:
- Management road have length L =
694.73m mode of soil, often muddy,
erosion, difficult to walk in the rainy
season makes the operation
management works very difficult
and obstacles.
1. Main dam
- Upstream slope is reinforced with concrete
slabs M200 pour in place, The sheet is sized
(2x2) m thick 12cm There is drainage hole,
Underneath lining cement bag prevent
dehydration of cement mortar, next is the
macadam layer of 10cm thickness, the bottom
is geotextile lining.
- Downstream slope erosion control by planting
grasses, drainage ditches (5x5) m, Slope
coefficient m= 2,5. Downstream drainage with
stone embankments and roofs of downstream
slope, Elevation downstream embankment
+38,96m
2. Spillway
- Based on spillway status and inspection
calculations, the proposed spillway repair
technical solution is as follows: Newly
rebuilding spillway with concrete M200 and
reinforced concrete M200.
3. Intake
- Demolition of old intake, New pipeline
construction with D300mm steel pipe wrapped
outside reinforced concrete M200 25cm thick.
- Appearance: intake is circular, pressure-flow,
with valves opening and closing downstream
4. Management road:
- Construction management road and operation
of the works, serial from the end of the
existing concrete road to the dam foot of the
Hoa Thuan Reservoir dam.
- Total length of the route L=694.73m.
- Road surface width B=4m including concrete
reinforcement 3m and soil margins 02 on each
side 5m. Structural concrete pavement M250
thick 18cm above the plastic tarpaulin lining.
Status of Main dam, Hoa Thuan reservoir
Status of Spillway, Hoa Thuan reservoir
Status of Management road, Hoa Thuan reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 31
Location Current status Construction works Pictures
The concrete pavement is divided into 5m-long
sections with elastic joints in the middle of the
sections.
6. Hoc Ram
reservoir
1. Main dam
- The surface of the dam made is soil
and has not been concreted so it is
often eroded;
- The stone breakwater, has been
damaged, peeling, need to be
reinforced and repaired;
- The anhydrous stone layer
reinforcing the upstream slope has
been peeled, sunken, and not flat;
- The grass protecting downstream
slope has been damaged and
drainage ditch on the slope is not
existing;
- Downstream drainage pipes have
been damaged, eroded, filled with
sand and sediments.
2. Spillway:
- Through field survey at spillway
scene is still working normally.
Therefore, there is no need to fix.
3. Intake:
- The operation mechanics of
upstream flat valves has been badly
damaged, Operation is difficult and
not watertight, there is no van house.
4. Management road:
- Management road from Dam to
spillway of length 160m, made is
soil, about 1.0m wide, along the
ridge, very difficult to go.
5. House under management;
- Not available House under
1. Main dam
- Upstream slope is reinforced with concrete
slabs M200 pour in place, The sheet is sized
(2x2) m thick 12cm There is drainage hole,
Underneath lining cement bag prevent
dehydration of cement mortar, next is the
macadam layer of 10cm thickness, the bottom
is geotextile lining.
- Downstream slope erosion control by planting
grasses, drainage ditches (5x5) m, Slope
coefficient m= 2.75. Embankment at the slope
of the dam foot creating banquette at elevation
+16.60m, wide B=5,0m. Downstream drainage
by the downstream slope sand filter, Drainage
in downstream area by sand filter combining
with dry masonry, elevation of drainage in
downstream + 14.60m, embankment
downstream slope by stone do not use mortar
at the downstream of the dam at + 9.50m
elevation
- Dam crest: Concrete M200, 2x4cm stone with
thickness of 20cm, Curb side downstream with
concrete M200, upstream is a wave breakwater
made of concrete M200, high 0.75m, thickness
of 0.5m.
2. Spillway
- On the basis of the spillway status and
calculation of hydraulic and structure , ensure
stability. Therefore, the proposal keeps status
of the old spillway.
3. Intake
- Prolonged the intake pipe with reinforced
concrete M300 toward downstream, Combined
Status of Main dam, Hoc Ram reservoir
Status of Spillway, Hoc Ram reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 32
Location Current status Construction works Pictures
management energy dissipitation’s tank beyond the intake.
Build houses to cover the intake tower valves
and build railing of the bridge connected to
house to cover the intake tower valves .
4. Management road:
- Management road serial from point Dam crest
the left shoulder beats to the wall on the right
hand side of the Spillway threshold.
- Total route length road L= 159,94m.
- Width of road surface B = 4m including
concrete 3m wide and 02 road curb is made of
soil each side 0.5m. The structure of M250
cement concrete road is 18cm thickness,
plastic tarpaulin lining below. The concrete
road surface is divided into 5m long sections,
with elastic slot.
5. House under management
- Combining the construction of intake operating
space to do House under management
Status of intake, Hoc Ram reservoir
Status of Management road, Hoc Ram reservoir
7. Hon
Dinh
reservoir
1. Main dam
- The surface of the dam made is soil
and has not been concreted so it is
often eroded;
- The downstream slope has appeared
seeping through the soil dam causing
muddy, erosion slope , unsafe for
works;
- The anhydrous stone layer
reinforcing the upstream slope has
been peeled, sunken, and not flat;
- The grass protecting downstream
slope has been damaged and
1. Main dam
- Seepage treatment for dams and background
by inclined wall, tray foot.
- Upstream slope is reinforced with concrete
slabs M200 pour in place, The sheet is sized
(2x2) m thick 12cm There is drainage hole,
Underneath lining cement bag prevent
dehydration of cement mortar, next is the
macadam layer of 10cm thickness, the bottom
is geotextile lining.
- Downstream slope erosion control by planting
grasses, drainage ditches (5x5) m, Slope
coefficient m= 2,5. Drainage in the
Status of Main dam, Hon Dinh reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 33
Location Current status Construction works Pictures
drainage ditch on the slope is not
existing;
- Downstream drainage pipes have
been damaged, eroded, filled with
sand and sediments
2. Spillway:
- Spillway The current form is the
spillway have door, Including 6
doors, each door is 2.0m wide,
opened and closed by vitme.
3. Intake:
- There is no collapsible system and
upstream flat valve gate, have
downstream taper valve But it was
also broken, stuck, cannot operate,
there is no van house.
4. Management road:
- Management road go to site, have
length L = 2,300m by soil, often
muddy, eroded, very difficult to
travel in the rainy season, making it
difficult to manage and operate the
project.
5. House under management:
- Not available House under
management
downstream slope by drainage ditch, paving
stone in elevation +5,56m.
- Dam crest: M200 concrete, stone 2x4cm thick
18cm, flush curb of downstream edge made of
reinforced concrete M200, Curb side
downstream with concrete M200, upstream is a
wave breakwater made of concrete M200, high
0.54m, thickness of 0.3m.
2. Spillway
- Based on spillway status and inspection
calculations, the proposed spillway repair
technical solution is as follows:
- Open wide 03 spillway gates; newly built 03
spillway gates, including entrance door,
spillway threshold and energy consumption
tank; concrete structure and reinforced
concrete M250.
- Reinforce the yard; reinforcing bottom and
slope plate with concrete M200.
3. Intake
- Demolition of old intake, build new intake
with steel pipes D600mm wrapped outside
reinforced concrete M200 25cm thick.
- Appearance: intake is circular, pressure-flow,
with valves opening and closing downstream
4. Management road:
- Construction management road and operation
of the works, serial from the end of the
existing concrete road to the dam foot of the
Hon Dinh Reservoir dam.
- Total route length road L=2.222,96m. On the
route, there are 5 new construction drainage
culverts.
- Width of road surface B = 4m including
concrete 3m wide and 02 road curb is made of
soil each side 0.5m. The structure of M250
Status of downstream Spillway, Hon Dinh reservoir
Status of Intake, Hon Dinh reservoir
Status of Management road, Hon Dinh reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 34
Location Current status Construction works Pictures
cement concrete road is 18cm thickness,
plastic tarpaulin lining below. The concrete
road surface is divided into 5m long sections,
with elastic slot.
5. House under management
- New construction House under management
8. Phu
Xuan
reservoir
1. Main dam
- The surface of the dam made is soil
and has not been concreted so it is
often eroded;
- The wave retaining wall made of
stucco stone has been broken and
peeled off and needs to be repaired;
- The anhydrous stone layer
reinforcing the upstream slope has
been peeled, sunken, and not flat;
- The grass protecting downstream
slope has been damaged and
drainage ditch on the slope is not
existing;
- Downstream drainage pipes have
been damaged, eroded, filled with
sand and sediments
2. Spillway:
- Through field survey at spillway
scene is still working normally.
Therefore, there is no need to fix.
3. Intake:
- Through field survey at the intake
still working normally. Therefore,
there is no need to fix.
4. Management road:
- Management road go to construction
have length L = 1.500m made in
soil, made is soil, about 1.0m wide,
along the ridge, very difficult to go.
1. Main dam
- Dam crest: concrete M200, stone 2x4cm, thick
20cm, flush curb of downstream edge made of
reinforced concrete M200.
- Downstream slope reinforced erosion by
planting grass under the dam body, drainage
ditch (5x5) m, Slope coefficient m = 3m.
Downstream drainage with stone of drainage
water, downstream foot combined with
embankment, Top elevation of stone pile is +
23.0m, elevation of embankment downstream
slope is at + 24.5m
2. Spillway
- On the basis of the current status of the flood
spillway and calculation and check hydraulic
calculations and spill structures, ensure
stability. Therefore, the old spillway remains
the same. However, to ensure flood drainage,
the frequency of P = 0.01%. Need to build a
new trouble spillway.
3. Intake
- On the basis of the current status of the flood
spillway and calculation and check hydraulic
calculations and intake structures, ensure
stability. Therefore, keeping the old intake.
4. Management road:
- Construction management road and operation
of the works, serial from the end of the
existing concrete road to the dam foot of the
Phu Xuan Reservoir dam.
Status of Main dam, Phu Xuan reservoir
Status of Spillway, Phu Xuan reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 35
Location Current status Construction works Pictures
- Total route length road L=1.349,22m.
- Width of road surface B = 4m including
concrete 3m wide and 02 road curb is made of
soil each side 0.5m. The structure of M250
cement concrete road is 18cm thickness,
plastic tarpaulin lining below. The concrete
road surface is divided into 5m long sections,
with elastic slot.
Status of energy consumption tank, Phu Xuan
reservoir
Status of the canal behind the intake to get water, Phu
Xuan reservoir
Status of Management road, Phu Xuan Reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 36
2.4. Summary of excavation volume, construction materials and machinery
2.4.1. Summary of excavation volume
50. The volume of construction materials of 8 reservoirs of the
subproject is shown in the table below:
Table 7: Total volume of excavated soil and embankment soil of the subproject
No. Name of the
reservoir
Volume (m3)
Excavated
soil
Embank
ment soil Total
The
volume of
excavated
soil
removed
The volume
of excavated
soil can be
utilized
Volume of
exploitation
soil at mines
soil
1 Dong Tron 105,196.5 66,958.01 172,154.51 38,238.49 64,958.01 2,000
2 Phu Xuan 42,394.39 29,353.09 71,747.48 13,041.30 27,353.09 2,000
3 Dong Khon 37,839.06 32,745.01 70,584.07 5,094.05 30,745.01 2,000
4 Ea Din 1 5,850.51 4,322.96 10,173.47 1,527.55 2,822.96 1,500
5 Gieng Tien 9,915.56 8,140.00 18,055.56 1,775.56 6,640.00 1,500
6 Hoc Ram 62,002.43 54,296.02 116,298.45 7,706.41 52,296.02 2,000
7 Hon Dinh 84,870.92 78,096.69 162,967.61 6,774.23 76,096.69 2,000
8 Hoa Thuan 6,654.25 5,708.88 12,363.13 945.37 4,208.88 1,500
Source: FS Report
2.4.2. Summary of volume of materials
51. The volume of construction materials of 8 reservoirs of the
subproject is shown in the table below:
Table 8: Summary of materials volume of the subproject
Name of the reservoir No. Material
name Unit Volume
Volume
converted Note
Dong Tron
1 Cement Ton 1,869.31
2 Sand m3 3,803.76 5,325.264 1.40 T/ m3
3 Rock m3 5,643.9 8,465.85 1.5 T/ m3
4 Iron and
Steel Ton 206.83
Phu Xuan
1 Cement Ton 410.38
2 Sand m3 1,317.14 1,843.996 1.40 T/ m3
3 Rock m3 4,901.81 7,352.715 1.5 T/ m3
4 Iron and
Steel Ton 0.518
Dong Khon
1 Cement Ton 1,006.75
2 Sand m3 8,153.12 11,414.368 1.40 T/ m3
3 Rock m3 4,515.62 6,773.43 1.5 T/ m3
4 Iron and
Steel Ton 166.47
Ea Din 1
1 Cement Ton 332.26
2 Sand m3 67.29 94.206 1.40 T/ m3
3 Rock m3 1,241.24 1,861.86 1.5 T/ m3
4 Iron and
Steel Ton 13.36
Gieng Tien 1 Brick Bricks 1,205 2.7715 1 Brick ≈
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 37
Name of the reservoir No. Material
name Unit Volume
Volume
converted Note
2.3 kg
2 Cement Ton 483.62
3 Sand m3 866.27 1,212.778 1.40 T/ m3
4 Rock m3 2,113.23 2,958.522 1.5 T/ m3
5 Iron and
Steel Ton 34.85
Hoc Ram
1 Cement Ton 766.26
2 Sand m3 10,250.71 14,350.994 1.40 T/ m3
3 Rock m3 4,704.15 6,585.81 1.5 T/ m3
4 Iron and
Steel Ton 15.466
Hon Dinh
1 Brick Bricks 2,901 6.6723 1 Brick ≈
2.3 kg
2 Cement Ton 1,063.08
3 Sand m3 1,885 2639 1.40 T/ m3
4 Rock m3 3,777.13 5665.695 1.5 T/ m3
5 Iron and
Steel Ton 54,66
Hoa Thuan
1 Brick Bricks 2,461 5.6603 1 Brick ≈
2.3 kg
2 Cement Ton 379.66
3 Sand m3 455.54 637.756 1.40 T/ m3
4 Rock m3 959.94 1,439.91 1.5 T/ m3
5 Iron and
Steel Ton 24.53
Source: FS Report
2.4.3. Mobilization of vehicles and machinery for construction
52. The number of vehicles and machinery being mobilized to serve the subproject items depends on
the construction progress of different items and the construction time on site. In order to meet the
construction progress and to complete the volume of works, based on the terrain of the site, the nature
of work and the sources of material supply, It is expected to arrange the main equipment to perform
the construction of the subproject often using equipment and machinery for construction as follows:
Table 9: list of machines and equipment for construction of subproject
No. Type of equipment Quantity Status
1 Hand drill set 8 tested
2 Crane 10 ton 8 tested
3 Crane 6 ton 8 tested
4 Tired- crane 16 ton 8 tested
5 Tired- crane 6 ton 8 tested
6 crawler crane 10 ton 8 tested
7 Table vibrator 1Kw 8 tested
8 Toad beams (portable soil
dress 60kg)
8 tested
9 Rod vibrator 1.5 KW 8 tested
10 Dittomat 8 tested
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 38
11 Machine cuts the MCD slot 8 tested
12 Flaxman steel cutting
machine
8 tested
13 Bending machine 5.0Kw 8 tested
14 Cutting machine for cutting
steel 5KW
8 tested
15 Saw machine 2.7KW 8 tested
16 Backhoe excavator 0.8m3 8 tested
17 Wheeled roller 9 ton 8 tested
18 Welding machine 23 KW 8 tested
19 Electric welding machines
23kW
8 tested
20 Drill 4.5KW 8 tested
21 Drill YG60 8 tested
22 Roller machine 10 ton 8 tested
23 Roller machine 8.5 ton 8 tested
24 Tired-roller 16 ton 8 tested
25 Vibrating roller machine 25
ton
8 tested
26 Internal-grinding machine
2.7KW
8 tested
27 Air compressor Diezel
1200m3/h
8 tested
28 Hammer drill VRM 8 tested
29 Construction cranes 10Ton 8 tested
30 Construction cranes 16Ton 8 tested
31 Rod vibrator 3.5KW 8 tested
32 Concrete pump 10 m3/h 8 tested
33 Concrete pump 50m3/h 8 tested
34 Grout pump 40KW 8 tested
35 brick breakers 8 tested
36 Backhoe excavator 1.25m3 8 tested
37 Welding machine 23KW 8 tested
38 Drilling machine 4.5KW 8 tested
39 Portable stone drill f42mm 8 tested
40 Drilling jumbo fl05 8 tested
41 Drilling jumbo f76mm 8 tested
42 Elevator hydraulic-driven 8 tested
43 Air compressor 1200m3/h 8 tested
44 Air compressor 600m3/h 8 tested
45 Generator 500KVA 8 tested
46 Bulldozer ≤110Cv 8 tested
47 Bulldozer ≤ 140Cv 8 tested
48 Drag shovel 1.25m3 8 tested
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 39
49 Betonite Circulation
Mixing Tank 750 l
8 tested
50 Planer milling machine
7KW
8 tested
51 Asphalt pave finisher 50-
60m3/h
8 tested
52 Lathe 10KW 8 tested
53 Concrete mixer truck 25m3 8 tested
54 mortar mixer 80l 8 tested
55 Bulldozer 110CV 8 tested
56 Building hoist 0,8Ton 8 tested
57 NI 030 8 tested
58 Truck 7Ton 32 tested
59 Dump truck 7ton 24 tested
60 Dump truck 10ton 8 tested
61 Water truck 5m3 8 tested
62 Dump truck 3,5Ton; 5Ton 16 tested
63 According to 020 8 tested
64 Building hoist 0,8Ton 8 tested
2.4.4. Distance and transport routes of materials
Table 10: Distance, transport route of materials
Name of the
reservoir Materials Distance to the works Transported road
Dong Tron
Brick, cement,
sand, stone,
steel
Transport distance of about 4
km. From the center of Tuy An
district to An Nghiep commune
Highway 1A, Inter-commune
roads and inter-village roads,
management road of Dong
Tron reservoir
Phu Xuan
Brick, cement,
sand, stone,
steel
Transport distance of about 12
km. From Dong Xuan district
center to Xuan Phuoc commune
Highway 19C, Inter-
commune roads and inter-
village roads, management
road of Phu Xuan reservoir
Dong Khon
Brick, cement,
sand, stone,
steel
Transport distance of about 3
km. From the center of Dong
Hoa district to Hoa Xuan Tay
commune
Highway 1A, Inter-commune
roads and inter-village roads,
management road of Dong
Khon reservoir
Ea Din 1
Brick, cement,
sand, stone,
steel
Transport distance of about 15
km. From Song Hinh district
center to Ea Bar commune
Highway 29, Inter-commune
roads and inter-village roads,
management road of Ea Din1
reservoir
Hoc Ram
Brick, cement,
sand, stone,
steel
Transport distance of about 3,5
km. From the center of Tay Hoa
district to Hoa Tan Tay
commune
Highway 29, Inter-commune
roads and inter-village roads,
management road of Hoc
Ram reservoir
Hon Dinh
Brick, cement,
sand, stone,
steel
Transport distance of about 3
km. From the center of Dong
Hoa district to Hoa Xuan Tay
commune
Highway 1A, Inter-commune
roads and inter-village roads,
management road of Hon
Dinh reservoir
Gieng Tien
Brick, cement,
sand, stone,
steel
Transport distance of about 13
km. From the center of Son Hoa
district to Son Ha commune
Highway 19C, Highway 25,
Inter-commune roads and
inter-village roads,
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 40
Name of the
reservoir Materials Distance to the works Transported road
management road of Gieng
Tien reservoir
Hoa Thuan
Brick, cement,
sand, stone,
steel
Transport distance of about 32
km. From the center of Son Hoa
district to Son Dinh commune
QL19C, Inter-commune
roads and inter-village roads,
management road of Hoa
Thuan reservoir
2.5. Auxiliary items
2.5.1. Electricity, water for construction and living
53. Due to the nature of the subproject building gravity water reservoirs, the electricity demand is
negligible, mainly for lighting at night and steel formwork workshops. At present, the national power
grid passes the construction areas, using electricity from the national grid near the subproject area. In
addition, there are 110KVA backup generators in case of power outages.
54. Pumps are used to intake water from the reservoirs to contain in the construction tanks at site.
Depending on the quality of the reservoir water, Contractors will have treatment measures by the
filtering tanks to ensure the water quality for domestic use and concrete construction.
2.5.2. Demand for workers’ houses and camps
55. The demand of workers constructing each item in rush hour is about 60 persons. Almost
construction locations of subproject are favorable for gathering materials as well as arranging labor
camp.
Table 11: Expected number of workers in construction sites
No. Name of works Quantity of workers
(persons)
Quantity of
environmental and
social supervisors
1 Dong Tron 60 1
2 Phu Xuan 40 1
3 Dong Khon 50 1
4 Ea Din 1 30 1
5 Gieng Tien 30 1
6 Hoc Ram 50 1
7 Hon Dinh 60 1
8 Hoa Thuan 30 1
Source: FS Report
56. Most of construction sites are well located to gather materials as well as to build worker camps.
However, the condition of infrastructure for electricity and water supply is limited, the number of
contractor workers concentrates on the peak time of about 15-20 people mainly managers and skilled
workers, simple work items that directly hire local workers about 20-30 people on a construction these
workers can go home after finishing work, construction time of each item is not long so some
construction are expected to rent premises or houses of local people in each area of the subproject to
build workers' houses, ensuring environmental hygiene and daily living conditions of workers like:
toilets are equipped to meet the requirements of QCVN 01: 2011/BYT on the standard of hygienic
toilet and the individual activities are carried out in the residential areas. At the material gathering
yards are arranged right at the construction site and there are security guards taking turns.
2.5.3. Construction route
57. Advantages: Conditions of construction of works are relatively good, convenient transportation;
At all construction sites, there is road to the reservoir, serving construction to meet the demand of
material transportation during deployment in the locality. Inter-district and inter-commune roads and
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 41
routes QL1A, QL25, QL29, DT543, QL19C are all reinforced, very convenient for transporting
materials and ensuring traffic safety.
58. Difficulties: The roads for operation and management of the current Reservoirs are still earth
roads, very muddy when rain occurs causing difficulties and dangers for transporting materials. Some
main roads such as QL1A, QL25... often have high traffic, so pay attention to ensuring traffic safety.
(Photos of managed routes are listed in section 2.2 of this report).
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 42
2.5.4. Landfill, soil pits
a. Volume and location of landfill dumping during construction
59. The organic soil layer is removed and transported to the landfill at the following locations: (Confirmation of disposal site location with CPC is attached in the
appendix of this report):
Table 12: Volume and location of landfill, transportation routes
Source: Explanation of investment project
No. Name of the
reservoir
Disposal
volume
(m3)
Expected landfill location Transported road
1 Dong Tron 38,238.49
Landfill coordinates: 13°16'35.17"N; 109° 9'41.34"E. The
landfill site is managed by An Nghiep Commune People's
Committee. Area of landfill is 16,000 m2, reserve is 50,000 m3
- Transport distance 300m
- Transported road: Operation management road of Dong
Tron reservoir
2 Phu Xuan 13,041.30
Landfill coordinates: 13°17'36.71"N; 109° 2'11.34"E. The
landfill site is managed by Xuan Phuoc Commune People's
Committee. Area of landfill is 5,000 m2, reserve is 15,000 m3
- Transport distance 350m
- Transported road: Operation management road of Phu
Xuan reservoir
3 Dong Khon 5,094.05
Landfill coordinates: 12°55'23.89"N; 109°20'6.47"E. The
landfill site is managed by Hoa Xuan Tay Commune People's
Committee. Area of landfill is 8,000 m2, reserve is 24,000 m3
- Transport distance 750m
- Transported road: Transported road: Operation
management road of Dong Khon reservoir and inter-
village roads in Hoa Xuan Tay commune
4 Ea Din 1 1,527.55
Landfill coordinates: 12°56'27.21"N; 108°50'15.03"E. The
landfill site is managed by Ea Bar Commune People's
Committee. Area of landfill is 3,000 m2, reserve is 4,500 m3
- Transport distance 100m
- Transported road: Transport route in the downstream of
reservoir
5 Gieng Tien 1,775.56
Landfill coordinates: 13° 2'50.95"N; 109° 1'17.08"E. The
landfill site is managed by Son Ha Commune People's
Committee. Area of landfill is 2,087 m2, reserve is 4,000 m3
- Transport distance 120m
- Transported road: Transport route on the right
downstream of the reservoir
6 Hoc Ram 7,706.41
Landfill coordinates: 12°56'29.20"N; 109°16'42.55"E. The
landfill site is managed by Hoa Tan Tay Commune People's
Committee. Area of landfill is 5,000 m2, reserve is 15,000 m3
- Transport distance 500m
- Transported road: Operation management road of Hoc
Ram reservoir
7 Hon Dinh 6,774.23
Landfill coordinates: 12°55'23.89"N; 109°20'6.47"E. The
landfill site is managed by Xuan Phuoc Commune People's
Committee. Area of landfill is 8,000 m2, reserve is 24,000 m3
(Use the same landfill with Dong Khon reservoir)
- Transport distance 2000m
- Transported road: Transported road: Operation
management road of Dong Khon, Hon Dinh reservoir and
inter-village roads in Hoa Xuan Tay commune
8 Hoa Thuan 945.37
Landfill coordinates: 13°12'14.03"N; 109° 2'44.88"E. The
landfill site is managed by Xuan Phuoc Commune People's
Committee. Area of landfill is 1,000 m2, reserve is 2,500 m3
- Transport distance 270m
- Transported road: Operation management road of Hoa
Thuan reservoir
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 43
b. Volume and location of soil pits during construction:
During construction phase, volume of embankment soil purchased at the soil pits have been licensed and exploited by competent authorities, Specific locations of
soil pits and transport routes are as follows:
Table 13: Volume and location of soil pits during construction
Source: Explanation of investment project
No. Name of the
reservoir
Expected
exploitation
volume (m3)
Expected soil pits location
(Coordinates VN2000, meridian axis 108030 projection 30) Transported road
1 Dong Tron 4,000 m3
Coordinates of borrow pits: X(m): 1.475.019; Y(m) 580.204.
Borrow pits Diem Diem, Diem Diem village, An Ninh Tay
commune, Tuy An district
- Transport distance 10 km
- Transported road: DT543; Inter-commune and inter-village
roads, Operation management road of Dong Tron reservoir
2 Phu Xuan 4,000 m3
Coordinates of borrow pits: X(m): 1.469.623; Y(m) 561.085.
Borrow pits Phu Hoi, Phu Hoi village, Xuan Phuoc commune, Tuy
An district
- Transport distance 4 km
- Transported road: Operation management road of Phu
Xuan reservoir, inter-village roads.
3 Dong Khon 4,000 m3
Coordinates of borrow pits: X(m): 1.451.694; Y(m) 580.377.
Borrow pits Nui Hon Mot, Tho Vuc village, Hoa Kien commune,
Tuy Hoa City
- Transport distance 24 km
- Transported road: Operation management road of Dong
Khon reservoir and inter-village roads, QL1A
4 Ea Din 1 3,000 m3
Coordinates of borrow pits: X(m): 1.438.117; Y(m) 528.205
Borrow pits Doi Hon 1, Tan Yen village, Ea Ly commune, Song
Hinh district
- Transport distance 13 km
- Transported road: Operation management road of Ea Din1
reservoir and inter-village roads, QL29
5 Gieng Tien 3,000 m3
Coordinates of borrow pits: X(m): 1.443.185; Y(m) 558.738.
Borrow pits Dong Lo Gach, Ngan Dien village, Son Ha commune,
Son Hoa district
- Transport distance 3 km
- Transported road: Operation management road of Gieng
Tien reservoir and inter-village roads.
6 Hoc Ram 4,000 m3 Coordinates of borrow pits: X(m): 1.424.792; Y(m) 596.581.
Borrow pits of Hoa Xuan Nam commune, Dong Hoa district
- Transport distance 26 km
- Transported road: Operation management road of Hoc Ram
reservoir and inter-district, inter-communal and inter-village
roads, QL1A
7 Hon Dinh 4,000 m3
Coordinates of borrow pits: X(m): 1.451.694; Y(m) 580.377.
Borrow pits Nui Hon Mot, Tho Vuc village, Hoa Kien commune,
Tuy Hoa City
- Transport distance 24 km
- Transported road: Operation management road of Dong
Khon reservoir and inter-village roads of Hoa Xuan Tay
commune, QL1A
8 Hoa Thuan 3,000 m3
Coordinates of borrow pits: X(m): 1.443.185; Y(m) 558.738.
Borrow pits Dong Lo Gach, Ngan Dien village, Son Ha commune,
Son Hoa district
- Transport distance 8,3 km
- Transported road: Operation management road of Hoa
Thuan reservoir, Inter-village and inter-commune roads,
QL25
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 44
2.6. Pre-construction activities
60. Prior to the construction, there are some works like surveying topography, hydrology,
meteorological conditions, geological drilling, land acquisition marking, UXO clearance. In the
subproject scope there is no demolition of structure but there is the vegetation clearing carried out by
the households that have affected trees and crops. Waste from vegetation clearing will be collected and
transported to the communal dump sites by affected households.
61. Designing the Subproject to provide the options that take into account scenarios, risks of climate
change on the performance of the construction items of the Subproject. The study on the climate factor
change is presented in the section: the recent status of the subproject area, as a basis for selecting
optimal design options. The recent impact of climate change in the region is mainly relating to the
precipitation that results in floods, landslides and droughts.
2.7. Material transportation plan
62. Construction materials will be transported to site about 1 week before the starting of the
construction. Construction materials will be transported to construction sites at certain periods of time
to avoid negative impacts on agricultural activities and the daily life of local people. Workers,
machines and materials are estimated in the sections above.
2.8. Operational and maintenance activities
63. Periodic dam safety monitoring: Once the reservoirs have been filled with water and the dams
started working, the dam-owners are responsible for the dam safety monitoring. This assignment is
carried out by qualified independent experts who did not participate in the investigation, survey,
design, construction or operation of the dams. After the dams regularly operate, the monitoring stages
are kept periodically, including the safety inspections prior and after flood seasons every year in
accordance with the Government Decree No. 114/2018/ND-CP on dam safety management.
64. Upon completion of the works, the operation of the dams will be the responsibility of the dam
owners and the responsibility of the PPMU will end.
65. The reservoir and valve operation procedure: A dam-owner must develop a reservoir water
regulation procedure to regulate the storage and discharge of water in normal and emergency
conditions of dam and reservoir to submit to authorized state management agency for approval and
organize the implementation of the procedure. The dam owners must prepare and submit documents
on operational procedure of valves and each work (hereafter referred to as operation of works) to the
authorities for promulgation according to their competence. Other operations should be addressed
pursuant to the Government's Decree No. 114/2018/ND-CP on dam safety management.
2.9. Dam safety plan
66. A dam safety report (DSR) will be prepared for the Subproject. The objectives of the DSR are to
present, analyze and make recommendations on: a) all conditions that may affect the safety of the
dams and its associated facilities; b) impacts of the dam or substructure breaking or unable to work
due to harsh natural conditions, human errors or structural faults; and c) the institutional framework (at
the present time and in the future) necessary to avoid or minimize adverse conditions for the safety of
the dams.
67. After the completion of the review at the subproject screening stage, the CPMU of MARD should
provide a DSR for each subproject which is identified during the project implementation stage and
sent to the international dam safety (PoE) and the World Bank for review. The report must include
findings and recommendations for any related safety issues and necessary actions to be taken. The
dam safety measures should be integrated into the design, construction and operation of the reservoirs.
68. Review and analysis of the dam structure: The review and evaluation of the dams and related
works will include, but is not limited to, the following:
- Review of the geological documents and material sources, with the attention to potential
adverse effects that may occur by the predictable geological features. Assessment of
unforeseen conditions and counter measures to address the safety and operation of the dams
and the works.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 45
- Assessment of the suitability of the types of dams and spillways, the response of the dam
design. They include the proposed measures for soil treatment, excavation, load characteristics
of selected substrate, seepage and pressure exertion control measures. The safety point of view
for any abnormalities or omissions and measures to be taken will be paid attention to.
- Assessment of the stability, strength analysis and safety factors in normal conditions, abnormal
and extreme load conditions for soil dams and concrete dams, spillway structure and drainage
works, including the determination of geological impact criteria.
- Consideration of the factors of like reservoir stability, landslide formation, waves, and wave
effects on dam stability;
- Consideration of the hydrological calculation method that determines the design flood of the
project, reservoirs and spillway size; review of the designs of the spillways, e.g. the flow
conditions and the tilling basins; assessment of the discharge capacity of the spillways
corresponding to all design flood indicators that dams will not be damaged.
- Considerations for the water intake and discharge works, including hydraulic designs,
emergency dewatering capacity and sedimentation process in the reservoirs.
- Assessment of the design of the spillways and out-door controls, including the selection of the
number and types of outlets and valves, lifting equipment and other controlling mechanisms.
Particular attention should be given to back-up systems to operate spillways which have gates
and draining facilities in the event of operational and power failure.
- Review of the design of the flow diversion works, construction progress, hydrology and the
risk factors associated with the flow diversion during the flow construction and filling process
at the beginning stage of the reservoir water accumulation.
- Consideration of the suitability of the instrumentation, especially those instruments or markers
which are required in the prediction of serious hazards or dam breakage.
- Consideration of the operation and maintenance procedures and the emergency response plan
of the dam owners, including the assessment of sub-project operation and maintenance factors
relating to dam safety and operators’ capacity assessment to be able to perform the
maintenance and inspections of the safety of the dams.
69. Review and assessment of dam safety risks: In addition to ensuring the dam's structure safety, the
project will assess potential risks of the dams to the population and the environment in downstream,
including the related works. Dam breakage may not occur but if it happens consequences will be
serious. Regarding this content, during the project preparation, as part of the DSR or environmental
and social management plan, the sub-Project Owners should conduct assessing potential risks to the
downstream population. For large dams with high-risks, it needs to acquire comprehensive data
during the preparation process, including topographic survey and downstream land use to simulate a
downstream dam and flood breakdown under different conditions/scenarios to serve the preparation of
the emergency response plans. Collecting data from upstream dams and/or watershed activities may
also be necessary for some dams. Planning and implementing capacity building programs for the
subprojects with pilot activities to promote active participation of local communities should be
considered. Communities around the dams can participate in day-to-day monitoring to protect the
dams from external destructors and they can join in simple maintenance tasks. A community
participatory model in dam safety activities should be considered. Sedimentation and contamination of
upstream water may be a serious problem for some river basins. The dam owners must commit to
allocate funds for appropriate dam operation and management and to periodically survey dam safety.
2.10. Subproject implementation schedule
70. Pursuant to the Plan reported by the PMU to the Provincial People's Committee from 2019-2022.
❖ 1st year:
- Investment preparation work.
- Compensation and site clearance
- Organize bidding for construction installation, and carry out construction of key works
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 46
❖ 2st year:
- Continue construction and complete key works.
- Organizing bidding for construction of living water supply works.
- Construction of living water supply works.
❖ 3st year:
- Executing and completing key works
- Execution completed the item of living water supply works
- Complete, hand over the subproject and exploit use.
Table14: Progress implementation of subproject
Work 1st year 2st year 3st year
1 2 3 4 1 2 3 4 1 2 3 4
Investment preparation work
Compensation and site clearance
Organize bidding for construction
installation, and carry out
construction of key works
Construction of key works
Bidding organization builds intake
items
Construction of water intake
Bidding organization for
construction items: house under
managemen and management road
construction of items house
under managemen and
management road
Complete, hand over the subproject
and exploit use
Source: Investment project report
2.11. Cost of implementation
71. Total investment capital demand is: 120,707,802,000 VNĐ
Table 15: Cost of implementation of subproject
No. Cost item Total investment (VND)
1 Expenses for compensation and land clearance 2,000,000,000
2 Construction costs 89,469,226,000
3 Cost of subproject management 1,642,233,000
4 Cost of construction investment consultancy 10,855,849,000
5 Other costs 5,767,057,000
6 Preventive 10,973,437,000
Total 120,707,802,000
Source: Demonstration of the investment project
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 47
CHAPTER 3: LEGAL, ADMINISTRATIVE AND POLICY FRAMEWORK
72. Safeguard Policy of the World Bank, legal documents on Vietnam's environmental and social
protection applied in the subproject.
3.1. Government Regulations
a. Laws
• Law on Environmental Protection No.55/2014/QH13 promulgated by the National Assembly of
Vietnam on 23/06/2014 and effective since July 2015. This Law provides the regulations on
environmental protection activities, policies, measures, resources, rights, obligations and
responsibilities of agencies, organizations, households and individuals in the environmental
protection.
• Land Law No.45/2013/QH13 approved by the National Assembly of Vietnam on November 29,
2013, regulating the land ownership regime, powers and responsibilities of the State which is the
representative of the land ownership of the whole people and unifies the management and use
regime of land, rights and obligations of land-users in respect of land within the territory of the
Socialist Republic of Vietnam.
• Law on Natural Disaster Prevention No.33/2013/QH13 approved by the National Assembly of
Vietnam on June 19, 2013, regulating the natural disaster prevention and control, rights and
obligations of agencies, organizations and household, individuals participating in the natural
disaster prevention and control, state management and resources to ensure the prevention and
control of natural calamities.
• Law on Water Resources No.17/2012/QH13 by the National Assembly of Vietnam on 21 June
2012 on management, protection, exploitation and use of water resources, prevention and
mitigation of damages caused by water in the territory of the Socialist Republic of Vietnam.
• Law on Biological Diversity No.20/2008/QH12 promulgated by the National Assembly of
Vietnam on 13 November 2008 on conservation and sustainable development of biodiversity,
rights and obligations of organizations, households and individuals in the conservation and
sustainable development of biodiversity.
• Forest Law No. 16/2017/QH14 promulgated by the National Assembly of Vietnam on November
15, 2017 and effective from January 1, 2019. This Law provides for the management, protection,
development and use of forests; processing and trade in forest products.
• Law on Construction No.50/2014/QH13 promulgated by National Assembly, Session VII, on June
18, 2014;
• Law on Road Traffic No.23/2008/QH12 promulgated on 13/11/2008;
• Law on Complaint No.02/2011/QH13 promulgated on 11/11/2011;
• Law on Cultural Heritage No.10/VBHN-VPQH promulgated on 23/07/2013;
• Law on Labor Safety and Health No.84/2015/QH13 promulgated on 25/06/2015;
• Law on Dykes No.79/2006/QH11 promulgated on November 29, 2006;
• Law on Irrigation No.08/2017/QH14 was approved by the National Assembly on 19/06/2017;
• Law on Plant Protection and Quarantine No.41/2013/QH13 promulgated on 25/11/2013.
b. Decrees
• Decree No.38/2015/ND-CP dated 24/04/2015 of the Government on waste management and waste
material;
• Decree No.18/2015/ND-CP dated 14/02/2015 of the Government on environmental protection
planning, strategic environmental assessment, environmental impact assessment and
environmental protection plan;
• Decree No.44/2014/ND-CP dated May 15, 2014 of the Government on land prices.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 48
• Decree No.47/2014/ND-CP dated May 15, 2014 of the Government providing for compensation,
support and resettlement when the State recovers land;
• Decree No.155/2016/ND-CP dated 18/11/2016 of the Government, providing for the sanctioning
of administrative violations in the field of environmental protection.
• Decree No.25/2013/ND-CP dated March 29, 2013 of the Government on environmental protection
charges for wastewater;
• Decree No.67/2012/ND-CP of the Government, amending and supplementing a number of articles
of the Government's Decree No.143/2003/ND-CP of November 28, 2003, detailing the
implementation of Article of the Ordinance on the exploitation and protection of irrigation works;
• Decree No.113/2010/ND-CP dated 03/12/2010 of the Government on the determination of
damage to the environment;
• Decree No.112/2008/ND-CP dated October 20, 2008 by the Government on management,
protection and integrated exploitation of natural resources and environment of hydropower and
reservoirs;
• Decree No.120/2008/ND-CP dated 01/12/2008 of the Government on river basin management;
• Decree No.114//ND-CP dated 04/09/2018 of the Government on the management of dam safety.
c. Circulars
• Circular No.27/2015/TT-BTNMT dated 19/05/2015 of the Ministry of Natural Resources and
Environment on strategic environmental assessment, environmental impact assessment and
environmental protection plan.
• Circular No.36/2014/TT-BTNMT dated 30/06/2014 of the Ministry of Natural Resources and
Environment, detailing methods of land valuation; building and adjusting the land price table,
specific land prices and land pricing consultancy.
• Circular No.37/2014/TT-BTNMT dated 30/06/2014 of the Ministry of Natural Resources and
Environment, providing detailed regulations on compensation, support and resettlement when the
State recovers land.
• Circular No.30/2014/TT-BTNMT on land allocation, land lease, change of land use purpose, land
acquisition.
• Circular No.36/2015/TT-BTNMT dated 30/06/2015 of the Ministry of Natural Resources and
Environment on the management of hazardous waste.
• Circular No.22/2010/TT-BXD of the Ministry of Construction on labor safety in construction of
works.
• Circular No.19/2011/BYT-TT dated 06/06/2011 of the Ministry of Health, guiding the
management of labor hygiene, health of workers and occupational diseases.
• T Circular No.13/2007/TT-BXD dated 31/12/2007, guiding a number of articles of Government's
Decree No.59/2007/ND-CP dated April 9, 2007 on solid waste management.
• Circular No.34/2010/TT-BCT dated 07 October 2010 of the Ministry of Industry and Trade,
regulating the dam safety management of hydropower projects
d. Decisions
• Decision No.52/2012/QD-TTg dated 16/11/2012 of the Prime Minister on the policy to support
job creation and vocational training for laborers whose agricultural land is acquired.
• Decision No.3733/2002/QD-BYT dated 10/10/2002, issuing 21 labor sanitation standards, 05
principles and 07 labor sanitation criteria.
• Government Directive in Document No.21/CT-TTg dated 14 October 2013 on strengthening the
management of reservoir safety.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 49
• Decision No. 1858 / QD-TTg dated November 2, 2015 of the Prime Minister on approving the list
of "dam rehabilitation and safety improvement (WB8) funded by the World Bank (WB);
• Decision No. 4638 / QD-NN-HDQT dated November 9, 2015 of the Minister of Agriculture and
Rural Development approving the feasibility study report of the project "dam rehabilitation and
safety improvement" (WB8) funded by the World Bank;
• Decision No. 5492 / QD-BNN-HTQT dated December 30, 2015 of the Ministry of Agriculture
and Rural Development Approving the Dam Safety Framework of the project "dam rehabilitation
and safety improvement" (WB8) funded by the World Bank;
• Decision No. 5095 / QD-BNN-HTQT dated December 6, 2016 of the Ministry of Agriculture and
Rural Development on approving the adjustment of the Manual of the project "dam rehabilitation
and safety improvement" (WB8) funded by the World Bank attach Decision No. 2793 / QD-BNN-
HTQT dated July 6, 2016 of the Ministry of Agriculture and Rural Development.
e. Applicable standards
• QCVN 01: 2009/BYT: National technical regulation on drinking water quality.
• QCVN 02: 2009/BYT: National technical regulation on domestic water quality.
• QCVN 08-MT: 2015/BTNMT: National technical regulation on surface water quality;
• QCVN 09-MT 2015/BTNMT: National technical regulation on groundwater quality.
• QCVN 14: 2008/BTNMT: National technical regulation on domestic wastewater.
• QCVN 40: 2011/BTNMT: National technical regulation on industrial wastewater quality.
• QCVN 38: 2011/BTNMT: National technical regulation on surface water quality to protect
aquatic life.
• QCVN 03-MT: 2015/BTNTM: National technical regulation on limit of some heavy metals in
soil.
• QCVN 15: 2008/BTNMT: National technical regulation on pesticide residues in the soil.
• QCVN 43: 2012/BTNMT: National technical regulation on sediment quality.
• QCVN 05:2013/BTNMT: National technical regulation on Ambient Air Quality.
• QCVN 06: 2009/BTNMT: National technical regulation on hazardous substances in ambient air.
• QCVN 26: 2010/BTNMT: National technical regulation on noise.
• QCVN 27: 2010/BTNMT: National technical regulation on vibration.
• QCVN 07: 2009/BTNM: National technical regulation on hazardous waste thresholds.
• QCVN 18: 2014/BXD: National technical regulation on construction safety
• QCVN 04 - 05:2012/BNNPTNT: National technical regulation on hydraulic structures – The basic
stipulation for design.
f. Legal documents provided by Project Owner
• PMU Decisions: No. 61 / QD-BQL-WB8, dated 08/6/2017, approving the plan for selecting
contractors for investment preparation phase (phase 2); No. 20 / QD-BQL-WB8, dated January 23,
2018, approving the results of evaluation of documents presenting interest in package number C1-
PHUYEN-CS1; No. 69 / QD-BQL-WB8, dated March 26, 2018, approving the results of
contractor selection of Package No. C1-PHUYEN-CS1: Consultancy for preparation of Feasibility
Study Report and Dam Safety report under the Dam Safety Repair and Improvement sub-project
in Phu Yen Province;
• Pursuant to the contract No. 01/2018 / HDTV-LDA-WB8 dated March 27, 2018; Package C1-
PHUYEN-CSI: Advice to prepare feasibility study reports and dam safety reports; Sub-project:
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 50
Repairing and improving dam safety in Phu Yen province under the project: Repairing and
improving dam safety (WB8) between Phu Yen Agriculture and Rural Development Project
Management Board and Company between Agriculture and Rural Development Project
Management Board Phu Yen province and Binh Dinh Irrigation and hydroelectric Construction
Consultant Joint Stock Company.
g. Compliance with the environmental and social impact assessment
73. The Subproject‘s environmental and social impact assessment will be carried out in accordance
with the World Bank and the Government‘s environmental assessment procedures. In particular, it will
be subject to the environmental and social management framework (ESMF) of the project that the WB
reviewed and approved. Social and environmental screening will be conducted for each subproject to
determine the appropriate size and type of the environmental assessment. Based on that, TOR will be
prepared for environmental and social impact assessments in accordance with the subproject scope and
the potential impacts anticipated arising from the subproject implementation. Environmental and
social screening will be conducted by World Bank safeguard policy experts. The TOR for the
environmental and social impact assessments will also be reviewed and approved by the World Bank
Safeguard Policy Specialists prior to the implementation of the environmental and social impact
assessments. In the process of the environmental and social impact assessment, consultations with
affected people and local NGOs should be conducted. ESIA will be publicly disclosed at the
subproject sites accessible to locally affected peoples and local NGOs in Vietnamese language the
English version will be disclosed on the WB‘s external website before subproject appraisal.
3.2. The World Bank’s safeguard policies
74. The objective of these policies is to prevent and minimize impacts to people and natural
environment in the development process. The safeguard policies provide basis for stakeholders’
participation in the project designs and act as an important tool for building ownership among local
people.
75. The effectiveness and development of the WB’s projects and programs has been increasing
significantly as a result of attention to these policies. The World Bank's safeguard policies are
available on the website at http://web.worldbank.org, where the environmental protection policies are
published.
3.2.1. Project level
76. The Project’s environmental and social screening has been implemented in accordance with OP
4.01 and indicated that the World Bank's Safeguard Policies on Environmental Assessment (OP/BP
4.01), Natural Habitats (OP/BP 4.04), Indigenous Peoples (OP/BP 4.10), (OP/BP 4.11) Physical
Cultural Resources, Involuntary Resettlement (OP/BP 4.12), Safety of Dams (4.37), Projects on
International Waterways (OP/BP 7.50) and Pest Management (OP 4.09) will be applied to this Project.
According to the screening, the Project is classified as Category A. In addition, it needs to comply
with the World Bank's requirements for community consultation and dissemination.
3.2.2. Subproject level
77. The subproject will only upgrade the dam on the existing reservoirs, has been screened for the
environment and society and determined that: the subproject does not cause major impacts on the
environment and society of the project implementation area. Relevant World Bank policies for the
subproject include:
Environmental safeguard policies
- OP/BP 4.01 Environmental assessment
- OP 4.09 Pest Management
- OP/BP 4.37 Safety of Dams
Social safeguard policies
- OP/BP 4.12 Involuntary resettlement
- OP/BP 4.10 Indigenous Peoples
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 51
OP/BP 4.01 Environmental Assessment
78. This policy is going throughout the process of identifying, preventing and mitigating
environmental and social potential negative impacts associated with the World Bank 's lending
activities. In the work of the World Bank, the purpose of the environmental assessment is to improve
decision making, ensure that the project options are being reviewed and sustainable and that the
community to be likely affected must be consulted. The Borrower is responsible for environmental
assessment (EA) and the World Bank advises the Borrower at their request. The borrowing projects
are proposed in four categories, depending on locations, sensitivity, scales of the projects, nature and
extent of potential environmental impacts, including A, B, C and FI.
79. This Subproject activates OP 4.01 as it relates to the construction and operation that will have
social environment potential negative impacts. Based on the results of the environmental screening,
the Subproject is classified B in terms of environment. As defined in OP 4.01 and the Government’s
environmental assessment regulations, this ESIA is prepared for the Subproject to meet the
requirements of the Government’s regulations and the World Bank’s safeguard policies. Upon
appraisal, the ESIA of this Subproject will be publicly disclosed to the local people in the project area
to ensure that affected people and local NGOs can access it easily and it will be disclosed through the
World Bank website.
OP/BP 4.09 Pest management
80. The purpose of the pest management policy is to minimize and manage environmental and health
risks associated with the use of pesticides, to promote and support safe, effective and environmentally-
friendly pest management. The purchase of pesticides in a WB-financed project must be assessed for
the nature and extent of risks involved, taking into account the proposed and intended use. For pest
management affecting one of the two sectors of agriculture or public health, WB supports a strategy to
promote the use of biological control methods and reduce reliance synthetic chemical pesticides. In
Bank-financed projects, the borrower addresses pest management issues in the context of the project's
environmental assessment. In appraising a project that will involve pest management, the Bank will
assess the capacity of the country's regulatory framework and institutions to promote and support safe,
effective, and environmentally sound pest management. The implementation of the subproject does
not increase the capacity of the reservoir, does not increase the irrigated area in the downstream area
and does not affect the crop structure in the subproject area. The repair of the culverts has been
damaged and the loss of water will be overcome to ensure the more stable irrigation water regulation
and will provide adequate irrigation water for the subproject area in the drought season. To restore the
initial volume and area of the reservoirs, then the cultivation of agricultural crops for areas that lack
water in the drought season will be restored, on the other hand, when sufficient irrigation water is
available, it can lead to changes. some plant varieties and planting areas. Therefore, it will increase the
amount of pesticide and fertilizer in the restored area and increase the pest in the subproject area. On
the other hand, the use of chemicals to kill termites in the dam body, if not well managed, also affects
the surrounding environment due to residues and disposal not in the right places or overflowing
rainwater attach termite chemicals.
OP/BP 4.37 Safety of Dams
81. This policy is triggered for the whole project because of the safe operation of dams related to the
socio-economic development and environment. When borrowing from the World Bank for
construction of new dams, a borrower must propose a dam safety policy based on opinions of
experienced and responsible experts in charge of design and construction supervision and that
borrower, by way of the dam safety measures, will implement them throughout the project cycle. This
policy also applies to the rehabilitation and improvement of existing dams, which affect the
performance of a project. In this case, the dam safety assessment should be undertaken and additional
dam safety measures should be proposed. OP 4.37 recommends that, in an appropriate circumstance,
WB staff will discuss necessary measures with clients to strengthen institutional, legal and regulatory
framework for dam safety programs.
OP/BP 4.12 Involuntary resettlement
82. The Involuntary Resettlement Policy is to address long-term difficulties, poverty and
environmental impacts on affected people during a resettlement process. OP 4.12 applies to regardless
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 52
of whether an affected person is relocated or not. The WB describes all processes and results of
"involuntary resettlement" or simply resettlement, even when affected people are not required to
relocate. The resettlement is involuntary when the Government has the right to requisition of land or
other assets, and when the affected people have no choice to maintain their current livelihood.
83. This policy applies because this sub-project causes temporary or permanent effects on involuntary
land acquisition, and loss of land-related architectures and assets to build the subproject. After
appraisal, the subproject prepared and disseminated Resettlement Policy Framework and Resettlement
Plan. Resettlement Policy Framework and Resettlement Plan include measures to ensure displaced
persons: (i) be informed of options related to resettlement; (ii) consulted and selected alternative
resettlement plans; and (iii) compensation and livelihood restoration.
OP 4.10 Indigenous peoples
84. The policy of defining ethnic minorities can be defined in particular geographical areas by the
presence of varying degrees of the following characteristics:
- Ties as closely as members of the different indigenous cultural group and are recognized for
this feature by others
- Lives in concentration in an environment which is different from geography or territory
inherited by the ancestors in the project area and to be close to the nature of the habitat and
territory.
- Culture, economy, society or political institutions are different from those of the majority of
cultures and societies.
- Ethnic minority language differs from the official language of the region or country.
85. The required condition for approving the investment project: OP 4.10 requires the borrower to
undertake consultations and disclosures with ethnic minorities that may be affected and establish a
broad community support model for the subproject and its objectives. The project financed by the
Bank shall include calculations to (a) avoid potential negative impacts on ethnic minority
communities; or (b) when avoiding is not feasible, measures should be proposed to minimize,
mitigate, or compensate for impacts.
86. This policy does not apply to this subproject because: In the area, there are 26 AHs directly from
the land acquisition activities of the subproject but not ethnic minorities people.
WBG EHS Guidelines
87. The Environment, Health and Safety Guideline (EHS) by a World Bank Group
(WBG)/International Finance Corporation (IFC) was introduced in 2008. This is an important
guideline on environmental, health and safety protection in industrial development and other projects.
It set out the goals to be achieved and measures to be taken to deliver the best results at reasonable
costs. This Guideline can be found at the website http://www.ifc.org.
World Bank’s policy on Access to Information
88. In addition to the environmental safeguard policies to promote the transparency and the
accountability, WB issued the Information Access Policy relating to proposed safeguard measures. It
sets out the policy to support borrowers’ decision-making by allowing them accessing information
relating to social and environmental aspects of such projects at the website in native language, which
is easy to understand and intuitive. The WB ensures that relevant environmental and social protection
documents related to such projects as well as the preparation procedures related to subprojects are
introduced timely prior to the appraisal. The World Bank’s information access policy requires
disclosure of information in both English and Vietnamese languages and meets the World Bank’s
standards.
Table 16: Summary of environmental assessment process of WB & Government
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 53
The stages in
the
environmental
assessment
process
environmental assessment process
(WB (OP/BP 4.01 on Environmental
Assessment)
Vietnam
(Decree No. 18/2015/ND-CP,
Circular No.27/2015/TTBTNMT)
Screening List of categories (A, B, C, FI)
It is not mandatory for each specific
case to classify, apply safety policy
and determine environmental
assessment tool (EA).
The World Bank will classify a
proposed project into one of four
categories including A, B, C, or FI
depending on type, location,
sensitivity and scale of the project
and the nature, the importance of its
potential environmental impacts.
Type A: Requirement for full
environmental impact assessment. In
some cases, the social and
environment management framework
is required, too.
Type B: ESIA, social and
environment management framework
or social and environment
management plan is required. In most
cases, social and environment
management framework and/or social
and environment management plan
are required.
Type C: no EA action.
Type FI: social and environment
management framework is the most
commonly tool. In the case of a
number of sub-projects that have been
identified before the appraisal, the FI
will prepare specific tools based on the
frameworks, e.g. the ESIA or social
and environment management plan.
Categories: I, II, III and IV of
Decree No. 18/2015/ND-CP.
Rules, regulations in Appendix I,
II and III - List of projects
requiring submission of SEA and
EIA report for approval.
All projects are not listed.
Generally, the Project Owners
classify their projects based on
the classification as stated in
Decree No.18/2015/ND-CP and
consulted with the Department of
Natural Resources and
Environment (DONRE) or
Vietnam Environment
Administration (DONRE). VEA)
to categorize and require EA
report such as:
• Projects fall into
Appendixes: I, II, III: SEA or
EIA are required
• Projects fall into Appendix
IV: no EIA and EPP are required
• Projects fall into
Appendixes: I, II, III and IV:
EPP is required.
Environmental
assessment tool
Depending on the project impacts, a
range of tools are used to meet the
World Bank's requirements, including:
environmental and social management
framework; specific environmental
assessment; environmental and social
management plan; regional and
sectoral EA; risk or hazard
assessment; Environmental audit. The
World Bank provides general
guidelines for implementing each tool.
The EA tools like SEA, EIA or
EPP are identified based on
Appendixes: I, II, III and IV of
Decree No.18/2015/ND-CP.
Scope of
environmental
assessment
The World Bank helps the borrower to
draft the TOR for EA and to determine
the EA scope, procedures, timetable
and outline of a EA report.
A A-type project requires ESIA TOR
and the determination of scope and
consultation will be necessary to
- TOR for EA is not required.
- Normally, after consultation with
the local DoNRE or the
Environmental Department
(VEA) about the type of EA,
Project Owner will prepare an EA
report.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 54
The stages in
the
environmental
assessment
process
environmental assessment process
(WB (OP/BP 4.01 on Environmental
Assessment)
Vietnam
(Decree No. 18/2015/ND-CP,
Circular No.27/2015/TTBTNMT)
prepare the TOR for environmental
assessment report.
Community
consultation
During the EA, the Borrower must
consult with affected groups and local
NGOs on the environmental aspects of
the project and focus their views.
For a A-type project, the Borrower
shall consult these groups at least
twice: (a) immediately after the
environmental inspection and before
the EA TOR completion; and (b) once
a draft EA report has been prepared. In
addition, the Borrower will consult
with these groups throughout the
project implementation process as
needed to address issues related to EA
that affect them.
For a B-type project, there should be at
least one community consultation
meeting.
For meaningful consultations, the
Borrower provides relevant project
documents in a timely manner prior to
the consultation in a form and
language that the group can
understand and be accessible to.
The minutes of the public meeting are
included in the report.
- Project owner is responsible for
consulting with the People's
Committee of the commune, ward
or township (hereinafter referred
to as the commune) where project
is being implemented, consulting
with organizations or
communities directly affected by
project; Research and receive
objective opinions and requests
from relevant agencies to
minimize project negative impacts
on the natural environment,
biodiversity and public health.
- Commune People's Committees
where a project is implemented
and organized and directly affects
will be consulted. Project owner
is responsible for submitting the
EIA report to the commune-level
people's committees where the
project is implemented and
organized and directly affects,
together with a written request for
comment. Within 15 working
days from the date on which a
EIA report is received, the
commune-level people's
committees and organizations
under the direct impact of the
project are obliged to submit their
responses if they do not approve
the project.
- The community consultation is
carried out in the form of
community meetings co-chaired
by the Project Owner and the
commune people's committees
where the project is implemented
together with the participation of
the community like Vietnam
Fatherland Front, socio-political
organizations, socio-professional
organizations, population
quarters, villages/hamlets. All
opinions of participants in the
meetings must be fully and
truthfully presented in the minutes
of the meeting.
Public Before the World Bank conducts a After EIA report is approved, the
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 55
The stages in
the
environmental
assessment
process
environmental assessment process
(WB (OP/BP 4.01 on Environmental
Assessment)
Vietnam
(Decree No. 18/2015/ND-CP,
Circular No.27/2015/TTBTNMT)
information project appraisal, EA report must be
made public in a way that is easily
accessible to project-affected groups
and local NGOs. When the World
Bank officially receives report, the
World Bank will publish the report in
English to the public via its website.
Project Owner is responsible for
preparing, approving and publicly
displaying EMP at the local
Commune People's Committee
office, in consultation with the
community for people’s
information, inspection,
monitoring. (Article 16 of Decree
No.18/2015/ND-CP).
Independent
environmental
specialist
For a A-type project, the Borrower
retains independent EA specialist who
have no contact with the project to
implement EA.
For a high-risk A-type project or a
project with multi-dimensional
environmental concerns, the Borrower
will also hire a consultative group of
independent environmental specialists
with international qualifications to
advise on the project aspects relating
to EA.
Specialists/consultancy companies will
be selected through bidding under the
close supervision of the World Bank.
This content is not regulated in
Vietnamese policy.
The Project Owner shall
implement or hire a consulting unit
which satisfies the conditions
specified in Clause 1, Article 13 of
Decree No.18/2015 to make EIA
report. Project Owner or
consultancy companies must fully
meet the following conditions: (i)
Staff responsible for EIA must
have at least BA degree and EIA
consultancy certificate; (ii)
specialized staff involved in the
project must have university or
higher degrees; (iii) have
laboratory and testing equipment
certified for measuring, sampling,
processing and analyzing
environmental samples for the
environmental impact assessment
of the project; In the absence of a
laboratory, the calibration
equipment must meets the
requirements and there must be
contract with qualified unit.
EA
review/approval
process
The WB reviews EA's findings and
recommendations to determine if it
provides sufficient grounds for the
Bank to process the project. When
Borrower has completed all or part of
the environmental assessment before
the Bank participates in a project, the
Bank will consider the environmental
assessment to ensure its consistency
with this policy. The Bank may, where
appropriate, request additional
environmental assessments, including
public consultation and disclosure.
The Ministry of Natural Resources
and Environment appraise and
approve EIA reports of the projects
specified in Appendix III to this
Decree, excluding the projects
relating to defense and security
contents. - The Ministries or the
ministerial-level agencies shall
appraise and approve EIA reports
on projects under their competence
for investment approval, except for
projects listed in Appendix III to
this Decree.
The Provincial People's
Committees conduct appraisal and
approval of EIA reports for
projects in their provinces, except
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 56
The stages in
the
environmental
assessment
process
environmental assessment process
(WB (OP/BP 4.01 on Environmental
Assessment)
Vietnam
(Decree No. 18/2015/ND-CP,
Circular No.27/2015/TTBTNMT)
the projects mentioned above;
The appraisal will take place at
least 45 working days at the
MoNRE level and 30 working days
at the DoNRE level and 5 working
days at the district level after
receipt of full Environmental
Impact Assessment or full EPP.
The number
and language
of the EA/EIA
to be evaluated
Number of copies are not specified.
Language requirements: English and
Vietnamese. EA reports in Vietnamese
are required for domestic disclosure
and must be in English for publication
on the World Bank’s website.
Project Owner must submit at least
07 environmental impact
assessment reports (depending on
number of appraisal committee
members) and 01 feasibility study
or technical report of a proposed
project
Content of EA
report
For a A-type project, the content of a
EA report is in line with Appendix B
of OP4.01.
The EA scope for a B-type project
may vary depending on each project,
but the EA's scope is narrower than
that of a A-type project. An
environmental and social management
plan is an integral part of an EA type
A (regardless of other tools to be
used). EA for a B-type project may
also be an environmental and social
management plan with the content set
out in Appendix C of OP 4.01.
The content of a EA report must be
in line with Circular
No.27/2015/TT-BTNMT.
Monitoring EA During the project implementation, the
World Bank will supervise the
implementation of the environmental
aspects on the basis of environmental
regulations and the Borrower arranges
reports of the agreement in the Loan
Agreement and in other project
documents to determine if the
compliance of the Borrower's
Environmental Procedures (mainly
with EMP) is satisfactory. If the
compliance is not satisfactory, the
World Bank will discuss with the
Borrower to ensure the compliance, if
necessary.
The local DONRE is entrusted
monitoring the environmental
compliance of the projects.
At the end of the project
construction phases, the
Environmental Management
Agency will coordinate with the
Construction Management Agency
to monitor the compliance of the
environmental management
activities stated in the EAs.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 57
CHAPTER 4: NATURAL, SOCIO-ECONOMIC CONDITIONS AND ENVIRONMENTAL
STATUS
4.1. Natural conditions
4.1.1. Geographical and geological conditions
89. Phu Yen is a coastal province in the South Central of Vietnam, located East of the Truong Son
mountain range, with geographical coordinates: North point: 13041'28"; Extreme South point:
12042'36"; Extreme West Point: 108040'40" and the easternmost point: 109027'47". The natural area of
the province is 5,060 km2, in which, hills and mountains occupy 70% area, the terrain slopes from
west to east and is strongly divided, The North borders on Binh Dinh province, The South borders on
Khanh Hoa province, The West borders on Gia Lai province and Dak Lak, The East borders on East
Sea. Phu Yen has a favorable geographical and transportation for socio-economic development.
90. The province has 09 administrative units including the districts: Dong Xuan, Dong Hoa, Song
Hinh, Son Hoa, Phu Hoa, Tay Hoa, Tuy An, Song Cau town and Tuy Hoa city (is the provincial
capital).
Figure 2: Map of the administrative units of Phu Yen province
4.1.2. Topographic and geological conditions
a. Terrain conditions
91. Phu Yen terrain is quite diverse: plains, hills, highlands, valleys alternate, with steep slopes of
terrain from West to East, with two large plains filled by the Ba and Ky Lo rivers with an area of 816
km2, Of which, Tuy Hoa plain alone accounted for 500km2, This is the most fertile plain.
92. All three sides of Phu Yen are mountains, in the North there is the Cu Mong mountain range, the
south is Dai Lanh mountain range, the West is the eastern ridge of Truong Son mountain range.
Mountains in Phu Yen, the highest peaks are concentrated in the West of Dong Xuan district (Chu
Treng mountain-1,238m, La Hien-1,318m mountain), in the Southwest of Tuy Hoa district (Hon Du-
1,470m, Hon Chua-1,310m) and South of Song Hinh district (Chu Ninh-1.636m mountain), The
remaining mountains are generally not high, elevation ranging from 300-600m. In the inner city,
although has a mountain not very high, it is very famous because it is located on the banks of the Ba
River, there is ancient Nhan Tower, lyrical landscape, It's Nhan Mountain. Due to the mountainous
terrain, there are many steep passes in Phu Yen. Along the National Road 1A, there are relatively long
and rugged mountain passes, located in all districts. The Phu Yen plain is accreted mainly by three
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 58
large rivers: Ba river, Ban Thach river accretion to create Tuy Hoa plain and Ky Lo river to accretion
up Tuy An plain and Dong Xuan, in which Tuy Hoa plain is considered as the granary of the Central
region,
b. Geological conditions and soil
93. Geological conditions in the subproject area common in the layers follows:
- Layer 1: Fine-grained sandy mud containing plant matter and organic impurities; dark blue,
dark gray; water saturation, softness, with fake flow phenomenon; distributing lake bed area.
- Layer 2: Light sandy clay - medium containing gravel and rolling stones of many sizes; yellow
brown, reddish brown gray; moist soil, flexible state; Poorly structured; Origin dQ.
- Layer 3: sandy clay and contain grit; yellow brown, red brown, white gray, blue gray; moist
soil, state of tight plasticity - semi-rigid; Tight structure - hard tight; Origin eQ.
- Layer 1a: Fine-grained sandy mud containing plant corpses and organic impurities; dark blue,
dark gray; water saturation, Soft weak, There is a phenomenon of fake flow; distributing lake
bed area.
- Layer 1b: Medium and heavy sandy clay; gray blue, dark gray; moist soil, natural state soft
plasticity - plasticity tight; moderately tight structure; Origin aQ.
- Layer 1c: Medium coarse grained sand; gray blue, white gray, dark brown; water saturation,
sporadic; poorly-foamed; this floor appears strong groundwater; Poorly structured; Origin aQ.
- Layer 4: Strong to moderate weathered basaltic stones; golden brown, black brown; gaps
structure; block structure
- Layer 5: Coarse grained sand containing pebbles, composed mainly of quartz, Fensfat.
- Layer 6: Granite boulders, firmly adhered by clay powder.
- Layer 7: White clay with yellowish brown holes, half hard state. This is a direct weathering
product of the original stone, high bearing capacity.
- Layer 8: Granite original stone
- Layer (MW): Stone Ba zan tholeite weathered, strongly cracked to moderate; low water
permeability; gray white, rusty brown, brown gray; Color-changing mineral components are
mainly aluminum oxide, oxit titan, silicat; stone has a cubic structure, original architecture;
hard rocks level VII-VIII. RQĐ from 20 - 40%. Flow dehydration unit (q = 0,41 ÷ 0,58
l/p/m.m)
- Layer (SW): stone Ba zan tholeite weathered and cracked weakly; low water spermeability;
gray white, rusty brown, brown gray; Color-changing mineral components are mainly
aluminum oxide, oxit titan, silicat; stone has a cubic structure, original architecture; hard rocks
level VII-VIII. RQĐ from 60 - 80%. Flow dehydration unit (q = 0,07 ÷ 0,09 l/p/m.m)
4.1.3. Climate and meteorological conditions
94. The subproject area is located in the monsoon tropics in Southeast Asia, There are 2 distinct
seasons: rainy season and dry season. The rainy season lasting from September to December, dry
season from January to August every year. The specific climatic features are as follows: (Source:
Main report of the subproject)
a. Air temperature
95. Average air temperature characteristics for many years, supreme temperature, minimum
temperature:
Table 17: Distribution table of air temperature characteristics
Unit: oC
Station
Month Tuy Hoa Son Hoa Ha Bang Song Hinh Mien Tay
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 59
Station
Month Tuy Hoa Son Hoa Ha Bang Song Hinh Mien Tay
I 23.3 22.1 22.5 21.4 20.6
II 23.9 23.2 23.5 22.4 21.6
III 25.4 25.4 25.3 24.4 23.7
IV 27.4 27.7 27.2 26.5 25.7
V 28.9 28.7 28.6 27.4 26.6
VI 29.4 28.5 29.1 27.5 26.5
VII 29 28.4 29.1 27.4 26.3
VIII 28.7 28.2 29 26.6 26.1
IX 27.8 27 27.5 26.3 25
X 26.5 25.4 25.8 24.8 23.7
XI 25.3 24.1 24.5 23 22.4
XII 23.9 22.5 23 21.6 21
Year 26.6 26 26.3 24.9 24.1
b. Air humidity
Table 18: Table of distribution of relative humidity characteristics (Unit:%)
Month
Station I II III IV V VI VII VIII IX X XI XII Year
Tuy Hoa 1 0.2 1.3 2 6.5 7.4 7.5 7 3.7 0.1 0.2 0.1 37
Son Hoa 1.4 4.5 9.9 14.9 14.5 9 10.2 9.1 4.4 0.6 0.3 0.6 79.3
Ha Bang 0.2 0.6 1.8 4.2 8.7 10.3 13.3 12.3 4.5 0.3 0.2 0.2 56.6
Mien Tay 0 2.2 13 13.8 11.2 7.2 7.2 5.5 1.8 0.2 0 0 62
c. Wind
96. The subproject area is affected by the monsoon regime, including two main wind seasons of the
year: the winter monsoon and the summer monsoon, the annual average wind velocity and the largest
wind speed as follows.:
Table 19: Table of wind speed in months of the year (Unit: m/s)
Month
Station I II III IV V VI VII VIII IX X XI XII Year
Tuy Hoa 2.3 1.6 2 1.8 1.8 2.5 2.4 2.5 1.7 1.8 3 3.1 2.2
Son Hoa 1.2 1.4 1.5 1.4 1.5 2.2 2.6 2.6 1.4 0.9 1.1 1.1 1.7
d. Evaporation
97. The annual evaporation rate is 1383 mm. Evaporation processes in the year follow the rule: high in
the dry season and low in the rainy season. Average distribution value of evaporation over many years
(showed in the following table):
Table 20: The amount of evaporation of the months of the year (Unit: mm)
Month
Station I II III IV V VI VII VIII IX X XI XII Year
Tuy Hoa 90 82 97 107 142 168 176 169 114 75 77 86 1,383
Ha Bang 76 74 94 101 134 154 169 164 103 63 65 71 1,269
Son Hoa 76 95 132 151 160 169 192 186 107 64 54 61 1,447
Song Hinh 49 87 98 114 129 135 156 151 77 37 31 36 1,101
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Report on Environemental and Social Impact Assessment (ESIA) 60
e. Rain fall
Average annual rainfall:___
X F = 1.750mm.
The largest 1-day rainfall, used to calculate the design floods by frequency: P% (XP%mm)
Table 21: Rainfall design irrigation area
Station The largest daily rainfall corresponds to the frequency (mm)
0.01% 0.1% 0.2% 0.33% 0.5% 1% 1.5% 2% 3% 5%
Hoa Dong 1090 839 765 713 670 598 557 528 487 436
Phu Lac 1221 942 858 798 749 666 618 583 535 473
Tuy Hoa 929 758 705 667 635 580 547 524 490 446
Hoc Ram 1111 864 791 738 694 622 579 549 507 453
Table 22: Average rainfall for years, months
Unit: mm
Station
Month I II III IV V VI VII VIII IX X XI XII
Phu Lac 60 19 45 38 93 45 39 51 232 571 498 256
Hoa Dong 78 24 52 50 107 76 58 60 238 569 588 273
Son Thanh 52 18 51 56 120 98 88 80 235 568 654 273
Song Hinh 58 21 68 65 155 125 97 95 237 626 567 274
Mien Tay 22 10 34 36 125 106 80 107 213 447 409 155
Son Hoa 27 10 34 44 147 112 87 87 221 426 403 157
Cung Son 25 9 34 40 142 110 82 82 186 430 397 139
Ha Bang 34 11 25 37 116 80 69 69 229 484 460 171
Xuan Lanh 43 17 36 48 155 104 87 107 239 550 491 169
Cu Mong 75 24 32 32 95 74 51 51 269 569 581 320
Song Cau 37 10 16 32 89 75 42 42 235 500 470 200
Chi Thanh 20 8 10 23 62 61 26 50 226 495 452 179
Tuy Hoa 63 18 38 37 107 60 42 42 272 592 540 229
Phu Lam 51 17 34 37 102 57 40 40 253 267 490 210
4.1.4. Hydrological conditions
(Source: Hydrographic report of the subproject)
a. The watershed characteristics
Table 23: The watershed characteristics of the reservoirs under the subproject
No. Works water
reservoir
Basin area Main river
length
Length of
tributaries
river
Slope slope
riverbed
F(Km2) L(Km) L(Km) Jsd(‰) Jls(‰
1 Phu Xuan 126 28.379 84.081 206.255 17.820
2 Dong Tron 69.5 19.44 52.13 174.46 21.45
3 Hon Dinh 6 3.36 0.43 262.27 70.22
4 Gieng Tien 3 2.26 1.11 62.02 6.82
5 Dong Khon 7.51 2.6 1.76 309.84 77.69
6 Hoc Ram 6.81 5.13 10.88 295.29 79.32
7 EaDin 1 4.5 4.11 1.2 125.57 6.75
8 Hoa Thuan 2.06 2.03 3.27 95.81 25.34
b. Annual flow
98. Calculating the annual flow from rain, the result is as follows:
Table 24: Result of calculating the annual flow characteristics
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Report on Environemental and Social Impact Assessment (ESIA) 61
Works water
reservoir
X0
(mm)
Y0
(mm) 0 Q0
(m3/s)
W0
(106m3)
M0
(l/s,km2)
Phu Xuan 1750 900 0.42 4.49 147.64 37.5
Dong Tron 1750 902 0.42 1,672 52.72 13.27
Hon Dinh 1750 902 0.47 0.224 7,059 37.3
Gieng Tien 1750 900 0.42 0.112 3,529 37.3
Dong Khon 1750 900 0.47 0.28 8,835 37.3
Hoc Ram 1750 900 0.42 0.25 8.01 37.5
EaDin 1 1750 900 0.42 0.17 5,294 37.3
Hoa Thuan 1750 900 0.42 0.08 2,420 37.3
Where
- Xo: Average annual rainfall for many years
- Mo: Modular flow
- o: Flow coefficient
- Y0: Depth of flow of the basin
- Q0: Annual flow
- Wo: Total flow volume
c. Design year flow
99. The specific calculation results are in the following table:
Table 25: Calculation table of results for the design year flow
Works water reservoir Q0 (m3/s) W0 (106m3) M0 (l/s,km2)
Phu Xuan 4.49 147.64 37.5
Dong Tron 1,672 52.72 13.27
Hon Dinh 0.224 7,059 37.3
Gieng Tien 0.112 3,529 37.3
Dong Khon 0.28 8,835 37.3
Hoc Ram 0.25 8.01 37.5
EaDin 1 0.17 5,294 37.3
Hoa Thuan 0.08 2,420 37.3
Where:
- Mo: Modular flow
- Q0: Annual flow
- Wo: Total flow volume
d. Distribution Design annual flow
100. The distribution results of Q85% flow model in the reservoirs are detailed in the following
table:
Table 26: Distribution table of design annual flow
Works
water
reservoir
Month 1 2 3 4 5 6 7 8 9 10 11 12
Phu Xuan QP85% (m3/s) 0.705 0.309 0.213 0.175 0.254 0.357 0.463 0.968 1,713 1,171 2,555 0.78
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 62
W (106m3) 1,859 0.813 0.561 0.462 0.668 0.941 1,219 2,550 4,514 3,086 6,732 2,055
Ki% 7.29 3.19 2.2 1.81 2.62 3.69 4.78 10 17.7 12.1 26.4 8.06
Dong Tron QP85% (m3/s) 0.62 0.271 0.187 0.154 0.223 0.314 0.406 0.85 1,505 1,029 2,244 0.685
W (106m3) 1,633 0.715 0.493 0.405 0.587 0.827 1,071 2,240 3,965 2,711 5,914 1,806
Ki% 7.29 3.19 2.2 1.81 2.62 3.69 4.78 10 17.7 12.1 26.4 8.06
Hon Dinh
QP85% (m3/s) 0.054 0.023 0.016 0.013 0.019 0.027 0.035 0.073 0.13 0.089 0.194 0.059
W (106m3) 0.141 0.062 0.043 0.035 0.051 0.071 0.092 0.193 0.342 0.234 0.511 0.156
Ki% 7.29 3.19 2.2 1.81 2.62 3.69 4.78 10 17.7 12.1 26.4 8.06
Gieng Tien QP85% (m3/s) 0.027 0.012 0.008 0.007 0.01 0.014 0.018 0.037 0.065 0.044 0.097 0.03
W (106m3) 0.07 0.031 0.021 0.018 0.025 0.036 0.046 0.097 0.171 0.117 0.255 0.078
Ki% 7.29 3.19 2.2 1.81 2.62 3.69 4.78 10 17.7 12.1 26.4 8.06
Dong Khon QP85% (m3/s) 0.067 0.029 0.02 0.017 0.024 0.034 0.044 0.092 0.163 0.111 0.243 0.074
W (106m3) 0.176 0.077 0.053 0.044 0.063 0.089 0.116 0.242 0.428 0.293 0.639 0.195
Ki% 7.29 3.19 2.2 1.81 2.62 3.69 4.78 10 17.7 12.1 26.4 8.06
Hoc Ram QP85% (m3/s) 0.705 0.309 0.213 0.175 0.254 0.357 0.463 0.968 1,713 1,171 2,555 0.78
W (106m3) 1,859 0.813 0.561 0.462 0.668 0.941 1,219 2,550 4,514 3,086 6,732 2,055
Ki% 7.29 3.19 2.2 1.81 2.62 3.69 4.78 10 17.7 12.1 26.4 8.06
EaDin 1 QP85% (m3/s) 0.04 0.018 0.012 0.01 0.014 0.02 0.026 0.055 0.097 0.067 0.145 0.044
W (106m3) 0.106 0.046 0.032 0.026 0.038 0.054 0.069 0.145 0.257 0.176 0.383 0.117
Ki% 7.29 3.19 2.2 1.81 2.62 3.69 4.78 10 17.7 12.1 26.4 8.06
Hoa Thuan QP85% (m3/s) 0.018 0.008 0.006 0.005 0.007 0.009 0.012 0.025 0.045 0.03 0.067 0.02
W (106m3) 0.048 0.021 0.015 0.012 0.017 0.025 0.032 0.066 0.118 0.08 0.175 0.054
Ki% 7.29 3.19 2.2 1.81 2.62 3.69 4.78 10 17.7 12.1 26.4 8.06
Where:
- Q 85%: Annual flow 85%
- W: Total flow volume
- Ki: The rate of flow distribution in the first month of the typical year
e. Flood flow characteristics
(i) Maximum flood peak flow Qmax
101. Calculation of design flood flows according to the formula of intensity limit. The following
results:
Table 27: Results table of flood peak flow calculations Qmax
Works water reservoir F Peak flood flow with frequencies (m3/s)
km2 0.1% 1.0% 2.0%
Phu Xuan 126 2,521 1,910 1,573
Dong Tron 69.50 2,010 1,360 1,035
Hon Dinh 6.00 258 176 148
Gieng Tien 3.00 126 96 80
Dong Khon 7.51 505 392 320
Hoc Ram 6.81 539 360 274
EaDin 1 4.50 215 165 131
Hoa Thuan 2.06 81 64 59
(ii) Chart design flood process
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Report on Environemental and Social Impact Assessment (ESIA) 63
102. Coastal areas in the Central region often occur flash floods, flood intensity increases quickly,
the time of rising high flood is short, flood process path using mathematical modeling to calculate is
appropriate. The design process of flood flow of the lakes is as follows:
Table 28: Chart flood diagram of reservoirs belong subproject
Reservoir Chart flood diagram
Phu
Xuan
Dong
Tron
Hon
Dinh
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 64
Gieng
Tien
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 65
Dong
Khon
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 66
Hoc Ram
EaDin 1
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 67
Hoa
Thuan
f. Muddy sand flow
103. Due to heterogeneous conditions of flow formation and sand mud the over the entire basin, So
the evolution of sand mud during the year and flood process is very complicated. Average amount of
mud and sand in dry season months is about 150-200 g/m3. In the first floods, the amount of sand is
not very large By the end of October, heavy rains began to appear the basin is eroded more strongly
The amount of mud and sand increases. In these months, the average turbidity is about 1000g / m3. At
the end of the flood season, the amount of mud and sand decreases
4.1.4.1. Extreme weather events in 7 districts under the subproject
104. At the conference "Climate change in Phu Yen province: situation, impacts and responses", in
the presence of many environmental scientists of Vietnam, spent time analyzing and giving an
explanation on the causes of Phu Yen province the regularly of storms and floods. When referring to
the factors affecting the meteorology and hydrology, it often causes floods in Phu Yen, experts from
the Institute of Meteorology, Hydrology and Environment pay attention to Phu Yen's topographical
features and natural conditions. According to engineer Vo Anh Kiet (Hydrometeorology Station in the
South Central Coast), the Central region in general, Phu Yen in particular rainy season coincides with
the period of winter monsoon should combine storm, tropical depression, tropical convergence with
enhanced cold air is the main cause of many heavy rains in the province. Besides, Phu Yen has a 3-
sided terrain bordering the mountain, West is the eastern edge of the Truong Son range. In the middle
of the Eastern flank of the Truong Son mountain range is a low mountain range that runs across the
sea to form Van Hoa plateau is the boundary dividing the two plains built by the Ba and Ky Lo rivers.
Phu Yen also has many steep passes and all kinds of terrain such as plains, hills, highlands, valleys
alternating lower from West to East. These are the natural conditions that govern the hydro-climatic
conditions of Phu Yen.
105. In the same opinion, Senior Lieutenant colonel Nguyen Van Thao, The Head of the Rescue
and Rescue Department of Military Region 5 made a comment: “In the interior of Phu Yen, there are
many mountains with the height of 300-600m creating many passes, slopes and small valleys; There
are many other short rivers such as Cau River, Ky Lo River ... with quite steep slope. In general, Phu
Yen is like a valley of the South Central Coast. Therefore, when there are storms, tropical depressions
operate in the south of the East Sea or land in the Central region, even though Phu Yen is on the edge
of storms, there are also rain and floods. Not only rain in the area causing floods but heavy rain in Dak
Lak, Gia Lai, Southwestern Binh Dinh, Phu Yen is also greatly affected. On the other hand, Phu Yen
soil is mainly rocky, arid, bare hills, thin vegetation (not to mention deforested forestswith this feature
when the rain does not retain water, so creating floods very quickly ”
4.1.5. Biodiversity
106. The subproject is not located in conservation areas such as watershed protection forest, National
park or biosphere reserve or nature conservation area, etc. Therefore, ecological characteristics and
biodiversity locally evaluated for the subproject scope and surrounding areas based on the results of the
current status survey and information provided by local people.
107. According to the results of the evaluation of the current land use status of the subproject, the
subproject area has identified key ecosystems, including:
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 68
- Production forest ecosystem: Plantation forest ecosystem, distributed in low hills and
mountains, is planted and exploited periodically, the plants mainly include cajuput,
eucalyptus, and rubber trees.
- Agricultural ecosystem: Mainly rice fields, vegetables and short-term crops such as corn,
beans, peanuts, sugarcane …
- Man-made ecosystem: Including fruit trees such as Avocado, Orange, Pineapple, Coconut
Siamese, Banana, ... and cattle, poultry and domestic animals of households in the land use
scope of the subproject.
- Reservoir aquatic ecosystem: Reservoir aquatic system belong the subproject
- According to the survey results of the Environmental Consultant and refer to the documents
show, In the subproject area, there are no rare and precious animals and plants listed under
Decree 32/2006 / ND-CP, Vietnam Red Book or IUCN Red List.
4.1.5.1. Flora
108. Flora in the subproject's land use area have little diversity of species, according to which the
dominant group of plants, wild plants account for less. Based on the survey results, the subproject area
is implemented by the consulting unit can be divided into groups of plants as follows:
- Perennials: Rubber trees are periodically planted and exploited on forest land surrounding the
subproject.
- Timber trees: Acacia auriculiformis, acacia, eucalyptus, sandalwood, bamboo, hips, apricot,
neohouzeaua, etc. are periodically planted and exploited on forest land area under the scope of
subproject and around the subproject scope. Based on the assessment of the current land use
status of the subproject shows: Production forests are concentrated mainly in the area of
communes. The major crops include acacia auriculiformis and acacia mangium. The entire
area is planted under 1 year.
- Annual crops: Sugarcane is grown and harvested annually mainly in districts Son Hoa, Song
Hinh and Dong Xuan. Around the subproject area, there are also some hilly land that is
cultivated by sugarcane farmers and harvested annually.
- Fruit trees: such as Avocado, Orange, Pineapple, Coconut Siamese, Banana, ... concentrate
mainly on garden land, surrounding residential areas and some scattered trees in the area the
subproject.
- Food crops: Rice, maize, sweet potato, peanuts, beans, ... mainly concentrated on agricultural
land under the scope of the sub-project. Particularly for rice that is mainly cultivated 2 to 3
crops / year, at the time of the survey, rice is being harvested.
- Vegetable crops: Vegetables, Coriander, Basil, ... Focused mainly on the land along the
stream, some low-lying areas and a small part of the garden of households..
4.1.5.2. Fauna
109. The fauna in the study area is very poor in terms of species, there is no record of rare and
precious animal species subject to strict conservation and protection, no species recorded in the red
book
- Domestic animals include: The fauna here is mainly domesticated animals and close to human
life, including cattle, poultry, ... pigs, chickens, ducks, and geese. buffaloes, cows, goats, fish,
...
- Wild animals often encountered in the subproject area are assessed according to information
of local people, including: Reptiles, amphibians (water snakes, frogs, frogs, rams, toads, ...) ,
Insects (with groups of beetles, membrane wings, flakes, jumping beetles, earthworms,
crickets, etc.), Birds (types of sparrows, lime wicks, humps, etc.), but the frequency appears
low and not often.
- In addition, in the subproject area, there is no record of rare and precious animal species
subject to strict conservation and protection, no species listed in the red book.
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Report on Environemental and Social Impact Assessment (ESIA) 69
- Fish: raised in ponds mainly freshwater seabass, Drift fish, crucian, tilapia ...... Fish
production in ponds is not high. Species encountered on Ban Vai stream, crevices and creeks
within the subproject during the rainy season have typical species such as carp, crucian, small
fish, wild fish, commercial fish, ditch fish,….
- Mollusks, living in the bottom area such as screw nuts, stone snails, mussels,...
- Crustaceans: Shrimp, Crab,...
- Overall aquatic animals of the subproject area Mainly fishes reared in ponds serving the of
people, have not high density, catches are low, mainly serving the needs of the people.
Based on the results of the assessment of the current status of biological resources in the subproject
area, mainly forestry and agricultural ecosystems so the species components are usually monotonous,
which are mainly the cultivars and domestic animals of farmers. Within the subproject, there is no
object of conservation, protection and no significant species of flora and fauna of significant habitat
value are affected by the subproject activities.
4.2. The impact of climate change on Phu Yen province
4.2.1. Types of natural disasters often occur in Phu Yen province
110. Phu Yen is one of the South Central Coastal provinces with complex climatic and topographic
features. It is the place most affected by natural disasters in Vietnam such as: Storms, tropical
depressions, floods, flash floods, river bank erosion, coastline, storm surges, cyclones, thunderstorms,
landslides, drought, saline intrusion, … In particular, natural disasters often occur in Phu Yen province
must include storms, floods, droughts, river bank erosion, coastline, high tides:
a. Storms and tropical depressions, tornadoes:
111. As mentioned above, the typhoon season in Phu Yen is determined from September to
December every year, the most is September and November, but there are also typhoons in the end of
December (year 1978). From 2001 to 2014, Phu Yen province had 48 typhoons and 08 tropical
depressions landed and affected. When storms or tropical depressions hit this area, it often causes
heavy rain to heavy floods, fast concentration, landslides carry mud, sand, great devastation to the
mountainous areas as well as spread down to the plains.
b. Flooding:
112. Due to the lower terrain characteristics from the West to the East, the rivers and streams are
short and steep, combined with severely damaged forests, When heavy rains occur, the flooding time
is very fast, causing flooding in most of the delta. Historically, Phu Yen province has experienced a
number of particularly large floods, causing human and property losses in 1993, 2007 and 2009..
c. thunderstorms, Thunder:
113. Phu Yen in coastal areas has an average of 40 days of thunderstorms annually, In mountainous
areas or valleys, there are more days of thunderstorms, about 100 thunderstorm days. Winter season
usually occurs from March to November, in which mainly from April to October.
d. Flash floods:
114. Occurred mainly along the rivers and streams, especially in small rivers and streams, carrying
soil and stones, causing damage to crops, sedimentation, flooded fields, damaging works, especially
transport and irrigation. In 2009, typhoon No. 11 (MIRINAE) hit the southern part of the province,
combined with intensified cold air and heavy rains in the upper reaches of the rivers, especially the Ky
Lo and Cau Rivers, causing severe flash floods. severe damage to the northern of the province
including the districts of Dong Xuan, Tuy An (Ky Lo river basin), Song Cau town (Song Cau basin).
e. landslides at river banks, seaside, high- tides:
115. The landslide situation of three large rivers in the province is very complicated and
increasingly serious, threaten the lives of thousands of households. Districts along the Ba River are
under strong cavitation, landslides have washed away hundreds of hectares of farmland. Whenever
storms and floods occur, river water floods inland dozens of meters. Tide phenomenon and sea
cavitation as well takes place very serious. More than 180 households in Ro village, Phu Dong ward,
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 70
Tuy Hoa city are facing with increasingly complicated tides. Since 2003, Ro village has been
cavitation by seawater. Tides often rise dozens of meters high.
f. Drought:
116. Due to uneven distribution of rainfall during the year, 8 months of dry season rainfall accounts
for only 30% of total annual rainfall, there are years almost 02-03 months without rain. Especially in
recent years, due to the impact of climate change, the annual rainfall is inadequate compared to the
average of many years and almost no Manchuria rain so in recent years drought occurred in the
Winter-Spring crop, Especially in the Summer-Autumn crop, drought occurs almost every year, at
least local drought due to insufficient water supply compared to the amount of water evaporated due to
prolonged heat, causing local drought, especially the area at the end of the canal and upland areas.
g. Salt intrusion:
117. The lack of water in the dry season has made saltwater intrusion in Phu Yen become stronger.
In addition to affecting the area of agricultural land, saline intrusion also affects groundwater in some
localities, causing serious shortage of domestic water.
4.2.2. The impact of climate change on Phu Yen province
118. The effects of climate change to Agriculture and forestry production, energy, residence and
livelihood of the people … This is a matter of all levels and sectors of Phu Yen province special
interest. According to Phu Yen Department of Agriculture and Rural Development, In these fields, the
agriculture sector attracts a lot of labor, creates jobs and contributes greatly to hunger elimination and
poverty reduction. Therefore, up to now, the province has built 41 irrigation works and small
reservoirs for agricultural production with an investment of trillions of VND. However, in recent
years, due to the impact of climate change, the average rainfall has decreased sharply compared to
previous years, resulting in a serious shortage of water in rivers and reservoirs, drought land area,
fallow land is becoming more and more serious, causing great damage to agricultural production.
119. Climate change also has the potential to increase the frequency, intensity, volatility and
extremes of dangerous weather phenomena such as storms, floods, droughts, etc… cause reduce
productivity, quantity, number of crops, pet; Increased risk for production, narrowing agricultural land
due to sea level rise and river water were salinization. According to the scenario of MONRE on the
results of assessing the impact of sea level rise in land use in Phu Yen province, the land specializing
in wet rice cultivation is the most affected type in the area at risk of flooding due to sea level rise.
120. It is forecasted that from 2020 to 2030, there will be 700 - 800 hectares, and from 2050 to
2070, there will be 900 - 1,100 hectares of land being submerged due to sea level rise. In addition,
climate change has a serious impact on vegetation and forest ecosystems; increase the risk of
extinction of some plants and animals, degenerating precious and rare gene sources; increased risk of
forest fires and disease spread; On average, 30-40 ha of forest is burned every year. Climate change
also increases the frequency of storms with high intensity, causing sand, sea waves and high tide to
erode banks, desertification of coastal areas; Forest resources are also directly affected, reducing the
forest land area with about 245 - 304 ha (period 2020 - 2030) and from 421 - 543 ha (period 2050 -
2070).
121. In fact, recently, many places in the coastal areas of Phu Yen province have been severely
eroded and tended to increase. Currently, the province has 19 landslide areas with a range of 300 -
1,500m; The annual landslide speed is from 10 to 20 meters, some places are from 25 to 35 meters,
such as Hoa An village, Xuan Hoa commune (Song Cau town), Ro village, Phu Dong ward, Tuy Hoa
city. According to the plan to cope with climate change of Phu Yen province, corresponding to the sea
level of 30cm, the flooding rate is 34.56km2, sea level rise 75cm, flooding rate is 39.998km2 and sea
level rise 100cm, flooding rate will be more than 44km2.
4.3. Environmental status
122. Select the location, parameters and frequency of measurement and sampling: The positions of
environmental quality survey in the subproject area are selected based on:
- The selected point represents to the regional environment situation;
- Emission sources characteristic;
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Report on Environemental and Social Impact Assessment (ESIA) 71
- Sensitive characteristics of the recipients
4.3.1. Quality of ambient air environment and noise
123. Results of analysis of ambient air quality and noise at the works under the subproject is
presented in annex 4 of this report.
124. Results of analysis of ambient air quality and noise are compared with the QCVN follows:
- QCVN 05: 2013 / BTNMT: National standard on ambient air quality.
- QCVN 26: 2010 / BTNMT: National standard for noise. In the table above the noise level, the
limit value allows noise levels in normal areas from 6 am to 21 pm.
125. Remarks: Monitoring results showed that air quality in the subproject implementation area
are guaranteed compared to the standard, the area 8 reservoirs have cool climate conditions, vegetation
is production forest, Shrub grows wellThe monitoring parameters are within the limits according to
QCVN 05: 2013 and QCVN 24: 2016 / BYT, QCVN 27: 2010 / BTNMT on ambient air quality (dust,
noise, vibration).
4.3.2. Environmental quality of surface water
126. The results of surface water quality analysis at the works under the subproject is presented in
annex 4 of this report.
127. Results of surface water quality analysis are compared with the following QCVN:
- QCVN 08-MT: 2015 / BTNMT: National standard for surface water quality
128. Remarks: The results of surface water quality monitoring showed that the water quality of 8
reservoirs in the subproject meets the B1 standard for irrigation and irrigation purposes. No parameters
exceed the permissible limits of B1 standard in QCVN 08-MT: 2015 / BTNMT - National standard on
surface water quality.
129. The area where the subproject is implemented is in rural areas, there are almost no industrial
production activities in the basin of the reservoir, the source of waste is mainly from farming,
agricultural production, animal husbandry feed. However, this source of waste is insignificant, the
surface water quality in the project areas is quite good, can be used for irrigation, irrigation or other
uses with water quality requirements similar.
4.3.3. Quality of groundwater environment
130. Quality of groundwater is measured and sampled at drilled wells in residential areas. The
results of analysis of groundwater quality of works under the subproject are presented in Appendix 4
of this report.
131. The results of groundwater quality analysis were compared with the QCVN follow:
- QCVN 09-MT: 2015 / BTNMT: National standard on underground water quality
132. Remarks: Groundwater quality monitoring results showed:
- Metal index is lower than the allowed limit.
- The index of TSS, Ammonium, Phosphate at the samples is at average level.
- Through the results of measurement and analysis of groundwater samples, it is shown that the
value of indicators in groundwater is below the permissible limit of QCVN 09-MT: 2015 /
BTNMT.
4.3.4. Quality of soil environment
133. Results of analysis of soil environment quality in works under the subproject are presented in
Appendix 4 of this report.
134. Results of soil environment quality analysis are compared with the QCVN follow:
- QCVN 03-MT: 2015 / BTNMT: National regulation on the allowable limits of some heavy
metals in soil
135. Remarks: Results of soil quality monitoring showed:
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- The quality of soil in the project area has no signs of pollution.
- The content of heavy metals is below the permissible limit of QCVN 03-MT: 2015 / BTNMT
(agricultural land)
4.4. General socio-economic characteristics of sub-project areas
4.4.1. Socio-economic characteristics of subproject communes
4.4.1.1. Agricultural sector condition in subproject area
(i) Crop structure in agricultural production in subproject area
136. In Phu Yen province, the total cultivated area in the province in 2018 reached over 133,731
ha, increased by 0.9% compared to 2017. In which, the rice area is 56,870 ha, productivity 69 quintals
/ha, 4.7% increase; output of 392,541 tons, increased by 4.8% compared to 2017. Sugarcane area
reached 29,764.1ha, up 6.5%; productivity of 645 quintals / ha, an increase of 0.5%; output of 1.9
million tons, up 7% from the previous year. Cassava area is 23,887 hectares, up 3.6%; productivity of
227.5 quintals / ha, up 4.4%; output of 543,311 tons, an increase of 8.1% compared to the previous
year.
137. As planned, in 2019, the total cultivated area is over 125,700ha. In particular, rice 55,500ha,
yield 66 quintals / ha, output 366,300 tons. The area of sugarcane is 20,000 ha, the productivity is 70
tons / ha, the output is 1.4 million tons. The area of cassava is 20,000 ha, the productivity is 25 tons /
ha, the output is 500,000 tons…
138. In the subproject area, the structure of crops is rice mainly 2 crops at summer-autumn and
winter-spring crops and other crops are sugarcane and cassava KM419.
(ii) Types of chemical fertilizers and pesticides commonly used and utilization rates
• For rice sown:
- Fertilizer amount for 1ha (8-10 tons) of manure, 250 kg of urea, 500 kg super phosphate, 150kg of
potassium chloride.
- Basal fertilizing manure, phosphate fertilizer + 20% phosphate + 30% potassium.
- Apply additional fertilizer 60-70% phosphorus + 20% potassium.
• For transplanted rice
- The amount of fertilizer for 1 ha: 4-5 kg of organic fertilizer is decomposed, urea nitrogen 8-12 kg
6-12 kg potassium chloride, 15-25 kg superphosphate Lam Thao. Specific fertilizers depend on the
type of rice, the nature of the soil.
- Fertilizer for rooted rice (15-20 days after transplanting): 50-80% protein 20-40% K, 5cm flooded
water level.
- In addition to ensuring high and stable productivity, it is necessary to better control some rice
pests such as brown planthopper, stem borer, sheath blight, blast disease.
• For sugarcane
- Sugarcane is a high yielding tree, each hectare per year can give us between 150 and 200 tons, and
it can even be up to 260 tons (there are 200 tons in the Mekong Delta). The growth time of
sugarcane is 10 to 15 months, so nutrients are higher than other crops.
- Normally to produce 100 tons of raw sugarcane (not including buds, leaves ...), the plant needs a
nutrient amount of about 120 kg N, 70 kg P2O5, 200 kg K2O.
- The ratio of nutritional factors also varies according to the growth periods:
▪ The period of preschool (from 1 to 5 true leaves) the most required sugarcane is nitrogen,
then potassium and phosphorus;
▪ In the period of tillering and at the beginning of the period of high growth, the sugar cane
required the most is potassium and then to the phosphate, after is nitrogen;
▪ Period sugarcane ripe (sugar accumulation) demand of sugarcane in N-P-K order.
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• For cassava
- Using ROOT 555 preparations to treat seedlings helps to limit the spread of diseases available on
seedlings, increase the viability of seedlings, The root of the seedling grows faster, more and more
productive, the plant absorbs better and more efficiently nutrients in the soil, provides some of the
ammonium acid and trace amounts needed for seedlings, helping Seedlings grow well and have
high resistance.
- Handling seedlings soaking 20-25 minutes before planting.
- When cassava is 2 months old, it is recommended to use herbicide again before fertilizing. This
time is very important to treat the grass thoroughly because if it does not handle the grass, it will
eat food and fertilizer of cassava causing low productivity. – After processing the finished grass,
apply manure and keep the appropriate moisture, fertilize according to the tree and fill up the soil,
the amount of fertilizer is 20g / tree (the dosage is 200 - 350kg / ha).
- Basal fertilizing:
▪ Method 1: All animal manure 2 tons + 150kg super phosphorus / ha, apply when plowing
or applying in rows or holes before planting.
▪ Method 2: Applying organic fertilizer for cassava together with 100kg Super Unicorn and
250kg Sitto Phat 16-8-16-12SiO2 + TE / ha.
- Apply additional fertilizer: Apply one time only after 45 - 60 days after planting: 300kg Sitto Phat
16-8-16-12SiO2 + TE.
▪ Current pesticides are often used: for pests and diseases: Regent 800WP, Karate 2.5EC...
spray when 1-2 year old larvae with active ingredients: Indoxacarb (Obaone 95 WG … ),
Flubendiamide ( Takumi 20WG…), Chlorantraniliprole (Virtako 40WG, Prevathon 5 SC,
Voliam targo 063SC); For disease: Camilo 150SC, Chevil 5SC, Tilt super 300EC, Nevo
330EC, Anvil 5SC, Rovral 50WP, Callihex 5SC, Hecwin 5SC, A.v.tvil 5SC, Til calisuper
300EC,... Currently a number of pest and disease control technologies are applied in the
project area. Rate of pesticide use as recommended by the manufacturer and each drug.
(iii) Implementation of integrated pest management in subproject localities
139. At present, in Phu Yen province, there is Phu Yen Agricultural Extension Center. In all
districts, there are district and commune extension center and in commune, there is farmer association.
The Phu Yen Province Agricultural Extension Center coordinates with other levels to regularly
organize professional training courses for agricultural extension staffs, collaborators and farmers. The
participants are informed about the functions, tasks and technical guidelines. At the same time, the
participants learn how to detect, prevent and treat some common pests, minimize the occurrence and
spread of diseases, minimize damage to farmers and raise production efficiency in the process of
farming. Currently, in the subproject area, it is complied with some basic principles in pest
management as follows:
• Growing and caring for the development of plants:
- Select good and suitable seedling for local conditions.
- Select healthy and qualified trees.
- Plant and maintain in accordance with proper technique so that the plants grow well with high
yield.
• Regularly check and understand the growth and development process of crops, pests, weather, soil
and water for timely remedial measures.
• Farmers become experts: technical knowledge and management skills of farmers need to be shared
with others.
• Pest control:
- Use disease prevention measures, depending on the severity of the disease in each stage.
- Use of pesticides with correct technique
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- Protecting natural enemies: Protect beneficial species to kill pests.
4.4.1.2. Social economic condition of subproject communes
140. Survey data on social conditions were investigated in September 2018, details are as follows:
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Table 29: Details on socio-economic conditions of subproject communes
No. Content
Quantity/ Rate
An Nghiep Ea Bar Son Ha Hoa Tan
Tay
Hoa Xuan
Tay Xuan Phuoc Son Dinh
1 Number of village/hamlet 4 8 5 4 6 5 5
Number of cultural house 4 8 5 4 6 5 5
2
Population
Number of household (HH) 1,585 1,529 2,724 2,645 4,301 2,443 530
Population (people) 5,030 6,467 8,760 8,750 12,919 9,612 1,960
3
Ethnic Composition (%)
Ethnic Group: Kinh 100 3.6 100 100 99.4 95.5 77.54
Ethnic minorities 0 96.4 0 0 0.6 4.5 22.45
4
Population Structure (%)
Male 49.51% 50.7 % 49.6 % 49.7 % 51.2% 49.7% 50.7
Female 50.49% 49.3 % 50.4 % 50.3 % 48.8% 50.3% 49.3
5
Education
Nursery School 1 1 1 1 1 1 1
Primary School 2 3 2 3 4 4 1
Secondary School 1 1 1 1 1 1 1
High School 0 0 0 0 0 0 0
6
Number of Health Station 1 1 1 1 1 1 1
Number of doctor 1 1 1 1 1 1 1
Number of physician 4 3 4 4 3 3 3
Number of bed 4 4 4 4 4 4 4
Medical facility Fully
equipped Fully equipped
Fully
equipped Fully
equipped Fully
equipped Fully
equipped Fully
equipped
Common diseases
Dengue,
fever virus;
flu, diarrhea
...
Dengue, fever
virus; flu,
diarrhea ...
Dengue,
fever virus;
flu, diarrhea
...
Dengue,
fever virus;
flu, diarrhea
...
Dengue,
fever virus;
flu, diarrhea
...
Dengue,
fever virus;
flu, diarrhea
...
Dengue,
fever virus;
flu, diarrhea
...
7 Market 1 1 1 1 1 1 1
8 Sensitive area
Temple 0 0 0 0 0 0 0
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Pagoda 0 0 0 0 0 0 0
Historical sites 0 0 0 0 0 0 0
Cemetery 4 8 5 4 6 5 5
9
Roads, water and electricity
Soil road (km) 3.2 3.4 3.3 3.4 4.8 2.6 2.5
Gravel road (km) 16.5 14.6 12.7 15.5 16.5 15.8 15.3
Asphalt road (km) 6.8 6.2 5.8 6.2 8.1 6.2 6.3
Concrete road (km) 5.5 5.6 5.57 6.4 5.2 5.8 5.57
Electricity 100 % 100 % 100 % 100 % 100 % 100 % 100 %
Machine water (%) 0 0 0 0 0 0 0
Well water , Water dug wells , Rivers,
ponds, lakes (%) 100% 100% 100% 100% 100% 100% 100%
10
Irrigation system
The system of canals was solidified (%) 26 21 25 29 18 21 24
The system of canals is degraded and
made of soil (%) 74 79 75 71 82 79 76
Rate of meeting irrigation requirements
of subproject area (%) 90.72 78 86 89 80.12 81.8 86
Irrigation area of reservoirs in the
subproject communes (ha) 1.950 200 55 200 559.05 1.500 45
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Report on Environemental and Social Impact Assessment (ESIA) 77
a. Hoa Xuan Tay commune
141. Agriculture and forestry production: in the first 6 months of this year, although facing
many difficulties due to weather and epidemics, the productivity of some plants and domestic animals
remained basically stable. The total value of agricultural and forestry production is estimated at 52.7 /
70 billion VND, reaching the rate of 75.28% as planned, (up 2.3% compared to the same period last
year). The handicraft, construction, trade and service activities in the first 6 months of the year in the
commune are as follows:
- Production value of cottage industries - Construction is estimated at 72.5 / 122.5 billion VND,
reaching the rate of 59.18% of the year plan (up 1.8% compared to the same period)..
- Trade-Service value is estimated at VND 34 / 48.5 billion, reaching 70.10% of the yearly plan
(down 2.82% over the same period).
142. The budget revenue and expenditure of the commune is as follows:
- Total state budget revenue is: 1,051,121 / 1,962,000 VND, reaching 53.57% compared to the
district assigned target; Revenue of the budget: 3,417,006 / 6,400,000 VND, reaching 53.39%
compared with the target of the commune People's Council.
- Total budget expenditure: 3,222,558 thousand VND, reaching 50.35% compared with the
Resolution of the People's Council.
- Average income per capita in 2017 reached VND 31,100,000 / person
143. Regarding political security and social order and safety: In 2017, there were 14 cases in
the commune, of which: 06 cases of traffic accident, 03 cases of property destruction, 03 cases of
property theft, 02 incidents causing disturbance disorderly security.
144. Poverty: Survey results of poor and near-poor households in 2017 (in which: Poor
households: 95 / 3,753 households, accounting for 2.53%; near-poor households: 161 / 3,753
households, accounting for 4.29%). The poverty rate in 2018 decreased by 1.51% compared to 2017
b. An Nghiep Commune
145. Agriculture and forestry production:
- Total production value of Agriculture - Forestry: 28,650 / 28,500 million VND. Reach 100.5%
of the plan
- The total output of grain food: 3,727.6 / 4,025 tons, reaching 92.61% of the plan
- Veterinary husbandry:
- Continuing to cross-breed the cow herds in 2017, the total herd of cows: 3,050 cows / 3,000
heads, reaching 101.66% of the plan (Of which: 2,735 crossbred cows, accounting for
89.67%).
- Poultry flock: 12,616 / 12,000, reaching 105.13% of the year plan. The proportion of pigs had
a slight decrease in number, the total number of pigs: 2,843 / 3,200 pigs, reaching 88.84% of
the plan.
- Forestry: In 2017, there were 23 households applying for exploitation of planted forests under
the KFW6 project, which was submitted to the budget in accordance with Decision 162/1999 /
QD-TTg of the Prime Minister with the amount of VND 10,501,719. New concentrated
planted forest area: 35.22 / 35 ha, reaching 101% of the year plan.
146. The budget revenue and expenditure of the commune is as follows:
- Total budget revenue in 2017: 4,914,903,432 VND / 5,134,141,000 VND, reaching 95.7%. In
particular, the local budget revenue: 532,649,172 VND / 487,100,000 reaching 109.4% of the
year plan.
- Total budget expenditure in 2017: 4,591,862,000 VND / 5,134,141,000 VND reaching 94.3%
- In 2017, per capita income reached VND 31,160,000 / person / year.
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Report on Environemental and Social Impact Assessment (ESIA) 78
147. Regarding political security and social order and safety: In 2017, there were 12 cases in
the commune, of which: 04 cases of traffic accident, 02 cases of property sabotage, 05 cases of
property theft, 03 incidents causing disturbance disorderly security..
148. Poverty: In 2017, the poverty rate of 10.03% decreased by 2.57% compared to the end of
2016, according to the New Rural Program, the rate of poor households decreased to 4.99%; the
proportion of near-poor households 9.40% increased by 1.85% compared to the end of 2016.
c. Xuan Phuoc commune
149. Agriculture and forestry production:
- Agriculture, forestry and fishery accounts for 65%, construction industry 10% and services
25%.
- Labor, employment: The total number of employees in the commune is 4909 people, of which
agricultural workers are 3288 people, non-agricultural workers are 1621 people. The
percentage of trained workers reached 55.91%. The proportion of employed regular workers
reached 99.82%. (4,909 / 4,915 people)
150. The budget revenue and expenditure of the commune is as follows:
- Average income per capita: 27.55 million / person / year.
- Total budget revenue in 2017: 2,652,140,000 VND, reaching 103.2% of the plan.
- Total budget expenditure in 2017: VND 2,436,250,000, reaching 91.85% of the plan
151. Poverty: The total number of poor households in the commune is 194 people, accounting for
4.5%. In which poor households are ethnic minorities is 19 households, accounting for 17.21% of the
total poor households. All ethnic minority households are poor (100%).
152. Regarding political security and social order and safety: In 2017, there were 15 cases in
the commune, of which: 08 cases of traffic accident, 03 cases of property destruction, 03 cases of
property theft, 01 incidents causing disturbance disorderly security
d. Son Dinh Commune
153. Agriculture and forestry production:
- People focus on investing in key crops such as sugarcane, cassava, rubber ... The total
cultivated area is: 1,763.43 / 1,687 ha, reaching 104.53% of the District People's Committee's
targets and Commune People's Council Resolution delivered, up 2.75% compared to 2016.
- Animal husbandry, veterinary: total herd of cows: 445 heads reached 101.6% of the
Resolution of the People's Council, increasing 1.14% compared to 2016; Of which, crossbred
cows reached 80% of the total herds.
154. The budget revenue and expenditure of the commune is as follows:
- Total revenue: 148,832,400 VND (as of December 15, 2017), reaching 90.2% of the district's
estimate and 89.66% of the Resolution of the People's Council, down 2.49% compared to
2016; Basic budget expenditures meet the recurrent expenditures and activities of the CPC.
Pay salaries and allowances strictly according to regulations.
- Per capita income reached 32.18 million / person / year.
155. Poverty: The results of the survey and review of poor and near-poor households in 2017, in
the commune have: 24 poor households, accounting for 4.44% and 28 near-poor households,
accounting for 5.19%. Among which, there are 14 ethnic minority households, accounting for 58.33%;
and 28 near-poor households, including 21 ethnic minority households, accounting for 75%.
156. Regarding political security and social order and safety: In 2017, there were 13 cases in
the commune, of which: 07 cases of traffic accident, 02 cases of property destruction, 01 cases of
property theft, 03 incidents causing disturbance disorderly security
e. Hoa Tan Tay commune
157. Agriculture and forestry production:
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- Total production value of Agriculture - Forestry: 26,350 / 25,500 million VND. reaching
103.3% of the plan
- Total grain food output: 4,027.6 / 4,025 tons, reaching 100% of the plan
158. Animal husbandry - Veterinary:
- Continuing to hybridize the cow herds in 2017, the total herd the cow: 2560/2550 cows,
reaching 100.4% of the plan
- Total poultry population: 10,311 / 10,100 heads, reaching 102.1% of the year plan.
159. Finance - budget:
- Total budget revenue in 2017: 3,914,900,000 VND / 4,134,141,000 VND, reaching 94.7%.
- Total budget expenditure in 2017: 3,540,800,000 VND / 3,914,900,000 VND, reaching
90.44%
- Average income per capita reaches 32 million VND / person / year.
160. Poverty: The total number of poor households in the commune is 133, accounting for 2.65%.
161. Regarding political security and social order and safety: The fight against crime and social
order management has been strengthened. Criminal crimes occurred 05 cases, 11 cases of law
violation. Traffic safety situation occurred 7 cases: including 02 road traffic accidents, 01 person died,
3 injured; traffic collisions happened 5 cases, injuring 8 people.
f. Son Ha Commune
162. Agriculture and forestry production:
- The total current planted area is 2,538 ha. Of which: Food crops 536 ha; food tree 131 ha;
Short-term industrial crops 1,850 ha; Long-term industrial crops and fruit trees: 21 hectares.
Farmers harvested cassava of 225ha NBQ 3.3 tons / ha, down 20 hectares over the same
period; Total output of sugarcane harvested: 119,793 tons
163. Regarding husbandry:
- Total number of cows: 2,530 cows. Crossbred cows 2,180 accounting for 86% of the total;
Cattle slaughter control: Pigs: 736 heads; Artificial insemination for cows: 38 cows;
Registering rabies vaccination vaccine: 50 doses; FMD vaccination phase I / 2018: 1,097
heads; Vaccination with pasteurellosis of 400 haemorrhagic septicemia; Receiving Benkocid
chemicals: 84 liters; The situation of animal and poultry disease in the commune is stable
164. Finance-Budget, Credit:
- Budget revenue: The budget revenue and expenditure work was ensured according to the
estimates and norms, serving the needs of socio-economic development, security and defense
in the locality. As of May 31, 2018, the total State budget revenue in the commune was VND
633,064,922 / 970,000,000 VND, 65.26% (an increase of 17% over the same period). Total
local budget expenditure as of May 31, 2018: VND 2,973,437,802 / VND 5,196,000,000,
reaching 57.21% (an increase of 1.53% over the same period). In general, budget revenues and
expenditures have made progress, increased revenue and maximum savings
- Average income per capita reaches 36 million VND / person / year.
165. Poverty: Poor households 148 households / 366 people, accounting for 5.43%; Near-poor
households 161 households / 519 people, accounting for 5.91%.
166. Regarding political security and social order and safety: The fight against crime and social
order management has been strengthened. Criminal crimes occurred 05 cases, 16 cases violations law.
Traffic safety situation occurred 9 cases, of which there were 1 road traffic accident, 1 death, 1
injured; traffic collision occurred 08 cases, injuring 03 people. Traffic control patrol 06 cases, detected
08 cases of violations, administrative fines of 1,550,000 VND, reminded 02 cases. Handling of
encroachment of corridors, roadside beds, sanctioning 5 cases with amount of VND 750,000
g. Ea Bar commune
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Report on Environemental and Social Impact Assessment (ESIA) 80
167. Agriculture and forestry production: Ea Bar is a purely agricultural commune, is one of the
largest perennial industrial crop-growing areas in Song Hinh district. With the advantage of basalt
red soil, this is an appropriate place to cultivate rubber, coffee, and pepper.
168. Finance-Budget, Credit:
- Total budget revenue in 2017: 8,934,500,000 VND / 9,656,134,000 VND reaching 92.5%.
- Total budget expenditure in 2017: VND 8,620,700,000 / VND 8,934,500,000 reaching 96.5%
- Per capita income: 20 million VND / person / year.
169. Poverty: The proportion of poor households accounts for 32.77%, down 5.61% compared to
2016
170. Regarding political security and social order and safety: The fight against crime and social
order management has been strengthened. Criminal crimes occurred 02 cases, 12 cases of law
violation. The situation of traffic safety occurred 4 cases: including road traffic accident 04 cases, 01
death, 5 injured.
4.4.2. Survey result of households benefited from subproject
4.4.2.1. Demographic information of households in the sample
(i) Demographic information
171. The household socio-economic survey was conducted in 7 subproject communes with 244
surveyed households and 1025 people. Among them, 213 male householders (87.3%) and 31 female
householders (12.7%). The average household size of 7 subproject communes is about 4.2 persons /
household. In particular, Hoa Xuan Tay commune has the largest household size (4.41 people /
household), Phu Xuan commune has the lowest household size (3.97 people / household). Specific
information on the number of households participating in socio-economic surveys in the following
table:
Table 30: Average number of demographics participated in the survey
No. Name of reservoirs Commune District Average
demographic
1 Dong Tron An Nghiep Tuy An 4.10
2 Phu Xuan Xuan Phuoc Dong Xuan 3.97
3 Dong Khon Hoa Xuan Tay Dong Hoa 4.41
4 Hon Dinh
5 Hoc Ram Hoa Tan Tay Tay Hoa 4.12
6 EaDin 1 Ea Bar Song Hinh 4.07
7 Gieng Tien Son Ha Son Hoa
4.16
8 Hoa Thuan Son Dinh 4.32
(Source: Socio-economic survey, September/ 2018)
(ii) Gender
172. During this socio-economic survey, the percentage of women participating in the interview
was not high, only 31 people (accounting for 12.7%) out of 244 people. Men account for about 87.3%.
Specific gender of respondents in the table below:
Table 31: Gender of surveyed people
Commune
Gender
Total Male
Proportion
(%) Female
Proportion
(%)
An Nghiep 26 86.7 4 13.3 30
Xuan Phuoc 28 96.6 1 3.4 29
Hoa Xuan Tay 61 88.4 8 11.6 69
Hoa Tan Tay 26 78.8 7 21.2 33
Ea Bar 27 90.0 3 10.0 30
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Report on Environemental and Social Impact Assessment (ESIA) 81
Commune
Gender
Total Male
Proportion
(%) Female
Proportion
(%)
Son Ha 23 92.0 2 8.0 25
Son Dinh 22 78.6 6 21.4 28
213 87.3 31 12.7 244
(Source: Socio-economic survey, September/ 2018)
(iii) Age
173. The age of humans is one of the important variables that implies the opinions and views of
each generation in the same issue. In a socio-economic survey, the age of the respondent is an
important factor shows the objectivity and credibility of the survey results. In this survey, the age of
respondents in the subproject areas is shown as follows:
Table 32: Age of surveyed people
Commune
Age of surveyed people
Total Under 35
From 36 to
45
From 46 to
55 Above 56
An Nghiep HH 11 9 6 4 30
% 36.7 30.0 20.0 13.3 100
Xuan Phuoc HH 6 5 9 9 29
% 20.7 17.2 31.0 31.0 100
Hoa Xuan
Tay
HH 12 15 21 21 69
% 17.4 21.7 30.4 30.4 100
Hoa Tan Tay HH 3 2 9 19 33
% 9.1 6.1 27.3 57.6 100
Ea Bar HH 0 5 18 7 30
% 0.0 16.7 60.0 23.3 100
Son Ha HH 2 2 11 10 25
% 8.0 8.0 44.0 40.0 100
Son Dinh HH 10 7 4 7 28
% 35.7 25.0 14.3 25.0 100
Total HH 44 45 78 77 244
% 18.0 18.4 32.0 31.6 100
(Source: Socio-economic survey, September/ 2018)
174. The survey results showed that the age of respondents is from 46 to 55 years (32%), followed
by the age of over 56 years (77 people), accounting for 31.6%, the number of participants answered in
the age group under 35 and from 36 - 45 years old, 18% and 18.4% respectively. Household
respondents in communes are mostly householder or elderly people in the family. They are the ones
who capture the general information about the socio-economic situation of the household as well as
the local socio-economic issues. This is also the main decision-making group on key family issues,
deciding the family's capacity and willingness to participate in project activities locally.
(iv) Size of household
175. According to the household survey results, the average number of people is about 4.2 persons /
household. The average household size ranges from 3 to 4 people/household, accounting for the
highest percentage (53.3%), the number of households from 1 to 2 people accounts for 15.9%. Some
households belong to single elderly households. The number of households with 5 or more people
accounts for 30.8%. Households with the largest population size are 10 people / household. These are
households with many children or 2-3 generations living in a house. Household size in the subproject
area communes is shown in the following table:
Table 33: Size of households participating in the survey
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Report on Environemental and Social Impact Assessment (ESIA) 82
Commune
Member in the household
Total From 1 to 2
people
From 3 to 4
people Above 5 people
An Nghiep HH 1 21 8 30
% 3.3 70.0 26.7 100
Xuan Phuoc HH 0 22 7 29
% 0.0 75.9 24.1 100
Hoa Xuan Tay HH 1 41 27 69
% 1.4 59.4 39.1 100
Hoa Tan Tay HH 0 25 8 33
% 0.0 75.8 24.2 100
Ea Bar HH 0 23 7 30
% 0.0 76.7 23.3 100
Son Ha HH 0 19 6 25
% 0.0 76.0 24.0 100
Son Dinh HH 3 12 13 28
% 10.7 42.9 46.4 100
Total HH 5 163 76 244
% 2.0 66.8 31.1 100
(Source: Socio-economic survey, September/ 2018)
4.4.2.2. Ethnic composition
176. The communes with ethnic minority people participating in the survey are Xuan Phuoc, Hoa
Tan Tay, Ea Bar, Son Dinh communes, the ethnic minority groups here are mainly Cham and Khmer,
the lives of ethnic minority households face many more difficulties compared to the Kinh group, as
follows:
Table 34: Ethnic minority composition of respondents
Commune
Ethnic composition
Total Kinh Khmer Cham Other
An Nghiep HH 30 0 0 0 30
% 100 0.0 0.0 0.0 100
Xuan Phuoc HH 22 0 7 0 29
% 75.9 0.0 24.1 0.0 100
Hoa Xuan Tay HH 69 0 0 0 69
% 100 0.0 0.0 0.0 100
Hoa Tan Tay HH 32 1 0 0 33
% 97.0 3.0 0.0 0.0 100
Ea Bar HH 28 2 0 0 30
% 93.3 6.7 0.0 0.0 100
Son Ha HH 25 0 0 0 25
% 100 0.0 0.0 0.0 100
Son Dinh HH 12 1 14 1 28
% 42.9 3.6 50.0 3.6 100
Total HH 218 4 21 1 244
% 89.3 1.6 8.6 0.4 100.0
(Source: Socio-economic survey, September 2018)
4.4.2.3. Education level
177. Education level of people which answered in the interview is very important because it is the
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Report on Environemental and Social Impact Assessment (ESIA) 83
factor that decides the accuracy of the survey. They are the informants providing answers to the
investigators' questions and returning the questionnaires, so there must be a certain level to be aware
of the issues and can answer the related questions. According to the survey results, the educational
level of the respondents is mainly concentrated in the secondary group (40.2%), the primary group
(29.5%), and significantly the college / university group accounts for 9.0% showed that the education
level of householders in the survey area has been improved. Specifically, the information on the
educational attainment of respondents according to each commune of the subproject is shown in the
following table:
Table 35: Education level of surveyed people
Commune
Never
go to
school
Primary
school
Secondary
school
High
school
Vocational
training/
intermediate
College/
University
Total
An Nghiep HH 0 6 11 8 2 3 30
% 0.0 20.0 36.7 26.7 6.7 10.0 100
Xuan Phuoc HH 2 7 15 2 0 3 29
% 6.9 24.1 51.7 6.9 0.0 10.3 100
Hoa Xuan
Tay
HH 0 27 29 5 2 6 69
% 0.0 39.1 42.0 7.2 2.9 8.7 100
Hoa Tan Tay HH 1 9 11 4 3 5 33
% 3.0 27.3 33.3 12.1 9.1 15.2 100
Ea Bar HH 2 1 12 12 2 1 30
% 6.7 3.3 40.0 40.0 6.7 3.3 100
Son Ha HH 1 8 10 3 0 3 25
% 4.0 32.0 40.0 12.0 0.0 12.0 100
Son Dinh HH 1 14 10 2 0 1 28
% 3.6 50.0 35.7 7.1 0.0 3.6 100
Total HH 7 72 98 36 9 22 244
% 2.9 29.5 40.2 14.8 3.7 9.0 100
(Source: Socio-economic survey, September 2018)
178. In general, the educational level of the people in the subproject area is quite uniform, through
contact of the investigators in the group discussion process with the target groups in the project area, it
could be seen that the ability to participate, contribute ideas to build a community project quite rich,
diverse and real. Therefore, in the process of disseminating content related to the project as well as
public consultation on technical plan proposals, there must be reasonable approaches for the
community to understand the nature and meaning of the project, as well as mobilize participation and
support for the subproject.
4.4.2.4. Occupation
179. According to the survey results, 79.9% of respondents have main jobs in agriculture including
cultivation and livestock (195 people), followed by aquaculture (8.6%), State employees / armed
forces (4.5%), self-employed small businesses (2.5%). In addition, a very small percentage of
households are workers, hired / hired labors and unemployed labors. From this result, in the project
communes, the percentage of households participating in agriculture, forestry and fishery accounts for
the highest percentage, their main source of income is mainly from agricultural/forestry / fishery
production. This greatly determines the stability and living standards of the household. Specifically,
the occupation of respondents in subproject communes is shown in the table below:
Table 36: Occupation of the respondents
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Report on Environemental and Social Impact Assessment (ESIA) 84
Commune
Occupation of householders
Total Agricultur
e
Aquacultur
e Forestry Business Worker Official
Contract
labor
Hired
labors
Unemploye
d people
An Nghiep HH 27 0 0 1 0 1 0 1 0 30
% 90.0 0.0 0.0 3.3 0.0 3.3 0.0 3.3 0.0 100.0
Xuan Phuoc HH 27 0 1 1 0 0 0 0 0 29
% 93.1 0.0 3.4 3.4 0.0 0.0 0.0 0.0 0.0 100.0
Hoa Xuan Tay HH 39 17 3 3 0 5 0 2 0 69
% 56.5 24.6 4.3 4.3 0.0 7.2 0.0 2.9 0.0 100.0
Hoa Tan Tay HH 30 0 0 0 `1 2 0 0 0 33
% 90.9 0.0 0.0 0.0 3.0 6.1 0.0 0.0 0.0 100.0
Ea Bar HH 28 0 0 0 0 0 0 1 1 30
% 93.3 0.0 0.0 0.0 0.0 0.0 0.0 3.3 3.3 100.0
Son Ha HH 22 0 0 0 0 2 1 0 0 25
% 88.0 0.0 0.0 0.0 0.0 8.0 4.0 0.0 0.0 100.0
Son Dinh HH 22 4 0 1 0 1 0 0 0 28
% 78.6 14.3 0.0 3.6 0.0 3.6 0.0 0.0 0.0 100.0
Total HH 195 21 4 6 1 11 1 4 1 244
% 79.9 8.6 1.6 2.5 0.4 4.5 0.4 1.6 0.4 100.0
(Source: Socio-economic survey, September 2018)
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Report on Environemental and Social Impact Assessment (ESIA) 85
4.4.2.5. Income and expenditure
180. In the subproject area, the proportion of households engaged in agriculture and livestock
accounts for a relatively high proportion, the main crops are food crops (such as rice, corn / wheat ...),
some flower plants color (like soybeans, beans, peanuts, potatoes, ...), the main source of household
income depends on the activity Agriculture and forestry production. According to the survey results,
the average income is 82.5 million / household / year and the average expenditure is about 56 million /
household / year. In addition to participating in local agriculture, households also have members who
work as hired laborers or workers in industrial zones to increase household income. Specific
information about household income is in the following table:
Table 37: Total income of households in the subproject area
Commune
Income of household in subproject area
Total Under 32
million
VND
From 32
to 58
million
VND
From 58
to 76
million
VND
From 76
to 112
million
VND
Over 112
million
VND
An Nghiep HH 8 5 4 7 6 30
% 26.7 16.7 13.3 23.3 20.0 100.0
Xuan Phuoc HH 8 7 8 5 1 29
% 27.6 24.1 27.6 17.2 3.4 100.0
Hoa Xuan Tay HH 13 18 14 11 13 69
% 18.8 26.1 20.3 15.9 18.8 100.0
Hoa Tan Tay HH 15 7 5 4 2 33
% 45.5 21.2 15.2 12.1 6.1 100.0
Ea Bar HH 0 3 3 10 14 30
% 0.0 10.0 10.0 33.3 46.7 100.0
Son Ha HH 2 3 7 6 7 25
% 8.0 12.0 28.0 24.0 28.0 100.0
Son Dinh HH 3 7 7 6 5 28
% 10.7 25.0 25.0 21.4 17.9 100.0
Total HH 49 50 48 49 48 244
% 20.1 20.5 19.7 20.1 19.7 100.0
(Source: Socio-economic survey, September/ 2018)
181. Household income levels determine household expenditure levels. All interviewed households
are not in poverty. When asked about the average expenditure in the month, there is no big difference
between income and expenditure. Households with large incomes are correspondingly large
investment costs, besides households make farms, when growing sugarcane or trading, the income and
expenditure are always much higher than that of pure agricultural households.
The relationship between income and expenditure of the subproject households:
182. According to socio-economic survey results, the highest average income in Ea Bar commune
(about 126 million VND / household) and the lowest in Hoa Tan Tay commune (about 48.9 million
VND / household). Normally, high-income communes also mean high spending levels. The highest
expenditure is in Ea Bar commune (97.1 million / household) and lowest in Hoa Tan Tay commune
(31.1 million / household). Household income levels determine household spending levels and
household spending levels.
183. In terms of living standards, the poor group is the most vulnerable group, because they do not
have enough money to live, their income depends on agriculture a lot and risk factors of the market
when they have to do unstable jobs to earn a living, etc., … Therefore, during the implementation of
the subproject's work items, the objects are poor households, they are vulnerable they need to be
concerned because if they have to relocate and relocate to a new place, the opportunity to recover
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Report on Environemental and Social Impact Assessment (ESIA) 86
income and maintain their lives is difficult..
4.4.2.6. Housing, land ownership
(i) Housing condition
184. According to household socio-economic survey results, 211 households in the subproject area
own semi-permanent houses (brick walls, corrugated iron / tile roofs) accounting for 86.5%. 5.3%
owned permanent houses (houses built from 1 floor or more / brick walls, reinforced concrete roofs).
Specifically, the type of household housing is shown in the following table:
Table 38: Type of housing of the household
Type of housing
Permanent
house with
one or
more
floors
Semi-
permanent
house
House with
Wood
paneling /
corrugated
iron
(corrugated
iron roof,
cement)
Simple
houses
(wooden
walls,
roofing
sheets)
Total
Permanent
house with
one or
more
floors
An
Nghiep
HH 1 27 0 0 2 30
% 3.3 90 0 0 6.7 100
Xuan
Phuoc
HH 2 26 0 1 0 29
% 6.9 89.7 0 3.4 0 100
Hoa
Xuan
Tay
HH 5 57 3 3 1 69
% 7.2 82.6 4.3 4.3 1.4 100
Hoa Tan
Tay
HH 5 26 0 0 2 33
% 15.2 78.8 0 0 6.1 100
Ea Bar HH 0 27 2 1 0 30
% 0 90 6.7 3.3 0 100
Son Ha HH 0 25 0 0 0 25
% 0 100 0 0 0 100
Son Dinh HH 0 23 2 3 0 28
% 0 82.1 7.1 10.7 0 100
Total HH 13 211 7 8 5 244
% 5.3 86.5 2.9 3.3 2 100
(Source: Socio-economic survey, September/ 2018)
185. Determining the ownership status, the position of the house in use by households is essential,
for community consultation on the implementation plan of items related to the subproject. At the same
time, is also the base, Legal basis for compensation, policies and options of compensation and support
are suitable for the affected households when implementing the subproject.
(ii) Land ownership
186. For residential land, according to survey results, 95.4% of surveyed households have land use
right certificates. In which, 100% of households surveyed in An Nghiep commune, Hoa Tan Tay, Ea
Bar, Son Ha and Hoa Xuan Tay have a certificate of residential land use right. About 4.6% of
households participating in the survey did not have a certificate of residential land use right. For
production land, 87.2% of households participating in the survey have a land use right certificate, 25
households do not have a land use right certificate (12.8%). Some of the reasons why households do
not have LURC due to insufficient legal basis to prove the validity of the land they live in, though this
is where they have lived for a long time, or a household. In the process of applying for a certificate of
land use rights, or land may be a reclaimed land of the household.
4.4.2.7. Access to social services
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Report on Environemental and Social Impact Assessment (ESIA) 87
187. Electricity network: At the time of the survey, 100% of households participated in the survey
in the subproject area communes using electricity for lighting in daily activities.
188. Energy sources used in cooking: Households use a variety of fuel sources. However, the
main fuel source is firewood and household coal used for daily cooking purposes, which is 55.4%.
About 38.5% of households use gas for cooking.
189. Roads. The average distance for people in communes in the subproject area to have access to
basic social services such as markets, parks and commune health stations, …is less than 5 km. This is
not too far distance for people to approach. Especially, at present, the quality of rural roads has been
improved much more than before, most of them are concrete roads, which help people to travel in a
way that is convenient and convenient for motorbikes. Average road for people to access social
services as follows:
Table 39: Distance from home to service points in the subproject area
Commune Market Park Health station Hospital of district
An Nghiep 2,530 2,545 3,040 7,482
Xuan Phuoc 878 0 1,927 14,109
Hoa Xuan Tay 3,132 6,350 3,823 13,593
Hoa Tan Tay 950 3,130 1,189 3,948
Ea Bar 8,581 12,833 5,296 17,206
Son Ha 1,620 2,333 1,408 9,041
Son Dinh 3,800 5,333 5,040 12,400
(Source: Socio-economic survey, September/ 2018)
190. Water source for daily life: Clean water is one of the criteria to assess the development and
civilization of the people, one of the important criteria in the implementation of new rural areas.
According to the results of the socio-economic survey, households participating in the survey mainly
use daily-life water for dug wells / drilling (96.1%). Specific information on water sources used in
daily household activities in the following table:
Table 40: Water source used for eating and daily activities of households
Commune
Tap water/Clean
water Digging well Drilling well Total
An Nghiep HH 2 25 3 30
% 6.7 83.3 10.0 100.0
Xuan Phuoc HH 0 28 1 29
% 0.0 96.6 3.4 100.0
Hoa Xuan Tay HH 2 14 53 69
% 2.9 20.3 76.8 100.0
Hoa Tan Tay HH 2 24 7 33
% 6.1 72.7 21.2 100.0
Ea Bar HH 0 28 2 30
% 0.0 93.3 6.7 100.0
Son Ha HH 2 23 0 25
% 8.0 92.0 0.0 100.0
Son Dinh HH 1 18 9 28
% 3.6 64.3 32.1 100.0
Total HH 9 160 75 244
% 3.7 65.6 30.7 100.0
(Source: Socio-economic survey, September/ 2018)
191. Toilet. According to socio-economic survey results, 70.1% of households own septic or semi-
septic toilets. This rate is high in Son Ha commune (100%), it is understood that this is a mountainous
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 88
commune, but it is quite benefited from sustainable poverty reduction programs, Program 135 and
rural clean water programs. However, 8.6% of the surveyed households do not have toilets mainly in
Son Dinh commune, Xuan Phuoc is also a mountainous commune with many difficulties, and the
surveyed households are mainly Ethnic minorities. Therefore, the habit of using toilets is also a factor
that increases the proportion of households without toilets. Specific types of household toilets are
shown in the table below:
Table 41: State of using toilet of household
Commune Septic toilets Rough
toilets
Simple toilet
in the garden No toilet Total
An Nghiep HH 17 11 2 0 30
% 56.7 36.7 6.7 0.0 100.0
Xuan Phuoc HH 19 1 1 8 29
% 65.5 3.4 3.4 27.6 100.0
Hoa Xuan Tay HH 57 9 2 1 69
% 82.6 13.0 2.9 1.4 100.0
Hoa Tan Tay HH 27 5 1 0 33
% 81.8 15.2 3.0 0.0 100.0
Ea Bar HH 18 8 3 1 30
% 60.0 26.7 10.0 3.3 100.0
Son Ha HH 25 0 0 0 25
% 100.0 0.0 0.0 0.0 100.0
Son Dinh HH 8 8 1 11 28
% 28.6 28.6 3.6 39.3 100.0
Total HH 171 42 10 21 244
% 70.1 17.2 4.1 8.6 100.0
(Source: Socio-economic survey, September/ 2018)
4.4.2.8. Gender issues in the subproject area
(i) Women's participation in management
192. According to the evaluation of functional agencies, the role and position of women in Phu Yen
province has been increasingly raised, the percentage of women participating in the fields has been
increasing. Women's participation in managerial and leadership positions has been strengthened,
gradually reducing the gender gap in the political field. According to the report of the Department of
Labor, Invalids and Social Affairs of Phu Yen province, in the period (2011-2016), the percentage of
female leaders in the Party, mass organizations, provincial departments and agencies increased.
compared with the previous term: there are 9/52 women participating in the Party Executive
Committee, accounting for 17.31%, increasing 10.04%; 14 out of 50 women are representatives of the
provincial People's Council; female leaders at departments, branches accounted for over 18%; the
team holds the position of head, deputy head and equivalent accounts for more than 24% ... Also from
2012 to now, the percentage of women participating in the XIV National Assembly is 1/6, accounting
for 16.6%. Female delegates of the 2016-2021 term council of the province 14/50 people, accounting
for 28%; district level 60/295 people, accounting for 20%; commune level 736 / 2,944 people,
accounting for 25%…1.
(ii) Gender issues in social association
193. The survey results show that the percentage of men and women who participate equally in
local community activities is relatively high, above 50%. However, in activities, men are still more
involved than women from community meetings, training in production and participation in activities
1 Department of Labor, Invalids and Social Affairs of Phu Yen Province (2016). Report on gender
equality implementation in Phu Yen province
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 89
of local socio-political organizations. In fact, because men still stand in the name of the householders,
if the invitation is not invited exactly name, most men will be the participants of the meeting. The
women only attend meetings when the husband / men absent or the householder only participates in
women's associations such as Women's Union, women's interest groups. Meanwhile, other socio-
political organizations such as Farmer's Association, Fatherland Front...the proportion of male
participation is higher.
Table 42: Gender in local community participation (%)
(Source: Socio-economic survey, September/ 2018)
(iii) Women in employment, economic development
194. Accounting for over 50% of rural labor, it can be said that the potential and advantages of women
participating in economic development in Phu Yen province are very large ... The rate of trained female
workers increases steadily over the years. In 2011 it reached 41.4%, by 2013 it was 48.2%; The proportion
of women with university and college degrees accounts for 36.5%. In recent years, Phu Yen province has
many programs to support women in economic development, job creation, and income growth, such as
actively exploiting capital from banks to support women, especially women in rural, mountainous and
disadvantaged areas, with a total outstanding loan of over VND 1,357 billion / 48,366 households; new
development of 4,587 saving credit women groups, creating conditions for difficult women to borrow
investment in production, cultivation and breeding2. Accordingly, the unemployment rate among female
workers accounted for 1.33%, lower than the male group (1.82%) and the overall rate of the province
(1.59%)3. The localities in the subproject area are all rural areas, the main production activities are
agriculture. The agricultural labor structure still accounts for a high proportion, including the female labor
force. Therefore, it is necessary to consider the role of women in employment and to enhance their status,
their voice in society as well as in decisions.
(iv) Division of labor by gender
195. The survey results show that the production activities in the family are not significantly
different, such as cultivation and livestock, with the highest rates of both equal 87.3% and 72.4%.
Meanwhile, other activities such as afforestation, forest product exploitation, aquaculture ..., the rate of
male participation is higher (nearly 50%). Activities that are far away or employed are also mostly
undertaken by men. In contrast, home-based services are mostly undertaken by women.
196. Jobs such as child care, housework, house cleaning are mostly undertaken by women, with
only a small percentage of men responding. This feature is quite common in rural communes in
Vietnam in general and in Phu Yen in particular.
Table 43: Division of labor by gender in production and living (%)
2 Report on activities of the Phu Yen Women's Union 2017 3 Phu Yen Statistical Yearbook (2016)
Participate in community work
Both
are the
same
More men More
women
Participate in community meetings 51.6 35.8 12.6
Participate in production training 52.2 31.2 16.6
Activities of socio-political organizations 50.9 25.2 23.9
Production activities
Both
are the
same
More men More
women
Cultivation (rice, upland crops) 87.3 7.1 5.6
Breeding 72.4 20 7.6
Planting / tending / protecting forests 46.1 46.4 7.5
Forest exploitation 47.7 45.3 7
Catching and aquaculture 46.2 47.6 6.2
Worker / hired employee 45.6 43.8 10.6
Business/ trade 20.7 8.6 70.7
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Report on Environemental and Social Impact Assessment (ESIA) 90
(Source: Socio-economic survey, September/ 2018)
(v) Gender in family decision making
197. Looking at the survey results on gender roles in family decisions, men still play a main role in
decisions such as spending large amounts, deciding career orientation for children as well as in
production investment. Although women are thought to have made significant progress in terms of
social and economic status, gender inequality in family decisions remains a barrier in rural areas,
especially in places where income more depends on men.
Table 44: Gender in making decision in family (%)
(Source: Socio-economic survey, September/ 2018)
4.4.2.9. Ethnic minorities in the subproject communes
198. Ethnic minorities in Phu Yen province are 58,012 people (13,589 households), accounting for
about 6.6% of the province's population) with 31 ethnic groups, mainly Ede, Cham, Ba Na, and Tay,
Nung, Dao, Thai, ... Ethnic minority mountainous areas of Phu Yen province have 3 mountainous
districts (Son Hoa, Song Hinh, Dong Xuan) and 9 mountainous communes of 4 mountainous districts
and towns (Tay Hoa, Phu Hoa, Tuy An district and Song Cau town). There are 45 communes and
towns in the mountainous area, of which 11 communes are in Song Hinh district, 14 communes in Son
Hoa district, 11 communes in Dong Xuan district, 4 communes in Tay Hoa district, 3 communes in
Tuy An district, 1 commune in Phu Hoa district and 1 commune in Song Cau town. In the
mountainous ethnic minority areas of the province, there are 16 extremely difficult communes and
villages with investment in Program 135 approved by the Prime Minister since 2017; 02 poor districts
(Dong Xuan and Song Hinh) are partially invested in policies under the Resolution No. 30a / 2008 /
NQ-CP of the Government.
199. In general, the economic life of ethnic minority people has many difficulties, the poverty rate
is high in some subproject districts such as Son Hoa, Song Hinh and Dong Xuan...
Table 45: Poverty situation of ethnic minority people in the districts of the subproject
No. District, city
Total
number of
EM
households
The number
of poor EM
households
Rate
%
Near-poor
households
are ethnic
minorities
Rate
%
1 The whole province 13,917 6,109 30.16 0 0
2 Dong Xuan District 2,809 1,845 45.15 0 0
3 Tuy An District 10 5 0.13 0 0
4 Đong Hoa District 2 2 0.15 0 0
5 Son Hoa District 5,131 2,240 78.13 0 0
6 Tay Hoa District 153 40 2.5 0 0
Working far away from home (not often at home) 41.1 44.1 14.8
Activity in the family 100
Child / child care 20.6 12 67.4
Cleaning the house 27.5 1.9 70.6
Cooking / housewife 10.4 1.5 88.1
Family decision-making
Both
are the
same
More men More
women
Decision on big family expenditures (shopping for valuable
assets, weddings ....) 60 33,1 6,9
Decision on child's education, career choices 37,7 55,1 7,2
Decision on investment and production 56,1 28,3 15,6
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 91
No. District, city
Total
number of
EM
households
The number
of poor EM
households
Rate
%
Near-poor
households
are ethnic
minorities
Rate
%
7 Song Hinh District 5,671 1,949 75.28 0 0
(Source: Department of Labor, Invalids and Social Affairs of Phu Yen province, 2017)
200. In terms of ethnic minority characteristics in the project communes, the results of information
collection show that some communes with the presence of ethnic minorities such as EaBar and Son
Dinh communes are quite high because these are mountainous communes of the province. However,
under screening on the impact of the subproject. Ethnic minority people are not affected by the
subproject activities.
Table 46: Situation of ethnic minorities in the project communes (people)
Commune Population of the
whole commune EM people
Proportion
(%)
An Nghiep (Tuy An) 5,030 0 0
Xuan Phuoc (Dong Xuan) 9,612 410 4,5
Hoa Xuan Tay (Dong Hoa) 13,712 25 0,18
Ea Bar (Song Hinh) 5,486 1,866 30,2
Hoa Tan Tay (Tay Hoa) 8,750 0 0
Son Ha (Son Hoa) 8,910 305 3,42
Son Dinh (Son Hoa) 1,960 408 20,8
(Source: Socio-economic survey, September/ 2018)
4.4.2.10. Assessment of community impacts on HIV / AIDS and intervention measures
(i) Understanding about HIV/AIDS:
201. According to the socio-economic survey results, 60.1% of respondents have the right
awareness about HIV / AIDS as "human immunodeficiency syndrome", 5.2% of respondents do not
know what HIV / AIDS is, and 34.7% of respondents said that this is a pathogenic bacterium.
Table 47: Understand the nature of HIV/AIDS
What is HIV/AIDS Rate (%)
Bacteria cause disease 34.7
Immunodeficiency syndrome in humans 60.1
Do not know 15.2
Total 100
(Source: Socio-economic survey, September/ 2018)
(ii) Awareness about the way of transmission:
202. The survey results show that people's awareness of HIV / AIDS transmission is quite good.
Proportion of respondents who know transmission by sharing needles and unsafe sex is high, all over
90%. However, there are still some incomplete perceptions when HIV / AIDS is transmitted through
mosquito bites, spread by sharing equipment… .
Table 48: Awareness about the way of HIV / AIDS transmission
The path of disease transmission Rate (%)
Sharing needles with others 98.6
Sharing cups, bowls with people with HIV 32.8
Mosquito bite or insect bite 28.9
Having sex with out condoms 93.7
Pregnant mother gives her child 68.7
Others 35.4
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 92
(Source: Socio-economic survey, September/ 2018)
(iii) Awareness of preventive measures:
203. When asked, over 95% said that they need to live monogamy and use condoms when having
sex with strangers and prostitutes. 77.7% prevented by using separate needles and syringes in all cases.
However, some still think that it is necessary to isolate people with HIV / AIDS and not share the
same bowls with patients. This is an inadequate awareness of how to prevent it from being propagated,
providing adequate information.
Table 49: Awareness of people about HIV/AIDS (%)
Preventive measure Rate (%)
Monogamy 95.2
Living isolated with HIV/AIDS people 23.7
Use condoms when having sex 97.8
Use needle separately in any case 77.6
Do not shake hands with the patient 10.0
Do not share the bowl with the sick person 28.7
Others 7.5
(Source: Socio-economic survey, September/ 2018)
204. In general, the awareness of the majority of people about HIV / AIDS is correct, but there is
still a certain percentage that does not understand the nature, the source of transmission as well as
preventive measures. Therefore, in the process of implementing the project, it is necessary to pay
attention to the propagation and dissemination of HIV / AIDS knowledge to the people in the
community, especially in the surrounding areas of the work area, with temporary workers in
construction time.
4.5. Sensitive subjects
205. The subproject is carried out in 7 communes, scattered across 6 districts of Phu Yen province,
in the process of deployment will have an impact on the environment and people's livelihood
activities. direction. There are 6/8 works to be noted because the impact in the reservoir area when
repairing and improving dam safety is presented in the table below
Table 50: Summary of the status of sensitive receptors
No. Works Works, description Status of the works
1 Dong Khon
reservoir
- Do Nhu Day Primary School
is located right next to the
materials transportation
route of Hon Dinh and Dong
Khon Reservoir.
- The school has a total of 12
classes with a total of 445
students and 31 teachers.
- The current status of the
route passing the school has
no traffic signs. The road
has been concreted.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 93
No. Works Works, description Status of the works
- Currently, Nguyen Van Phu
households are renting an
area of the lake to raise
lamprey. With the scale of
16 cages. Currently the fish
has been raised for about 4
months.
2 Hoan Dinh
reservoir
- The local bridge has been
built over 20 years. The
status quo is no longer safe.
The road connecting the two
ends of the bridge is a
uniform soil road, muddy
when rains occurs.
- The bridge over the stream
is the only route for people
to transport acacia and
agricultural products and is
an inter-village route of Hoa
Xuan Tay commune.
However, the density of
traffic through the bridge is
very little.
3 Dong Tron
reservoir
- Current status of lighting
grid electricity line and
electricity serve spillway
installation on the dam crest
toward downstream. There
are 6 electric poles on the
dam crest with a height of
4.1m.
4 Ea Din1 reservoir
- The management road and
material transportation road
through the Ea Din1
reservoir, Dam is also an
important transportation
route of Ea Bar commune.
At present, this route is the
route to transport
agricultural and forestry
products of the farms in the
subproject area. The road
has been concreted.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 94
No. Works Works, description Status of the works
5 Hoc Ram
reservoir
- The route of transportation
of raw materials of Hoc Ram
reservoir goes through the
National Road 1A, and Le
Trung Kien High School,
Dong Hoa District with the
scale of 37 classes with 1600
students and 97 teachers and
teachers; Nguyen Chi Thanh
Secondary School with a
scale of 16 classes with 450
students and more than 30
teachers, Le Thanh Ton
High School with a scale of
36 classes with 1450
students and 85 teachers.
and Xuan Long Pagoda
often focuses many
Buddhists on holidays, New
Year and the first day and 15
of the lunar month.
6 Gieng Tien
reservoir
The management road and material
transportation road through the through Gieng
Tien Dam is also an important transport route.
And sugar cane farmers in the area still use this
route to transport sugarcane materials.
- The management road and
material transportation road
through the through Gieng
Tien Dam is also an
important transport route.
And sugar cane farmers in
the area still use this route to
transport sugarcane
materials. The current
condition of the road is
uniform earth road, flanked
by rice fields of the people.
7 Phu Xuan
reservoir
Near the area of Phu Xuan reservoir, there are
no sensitive constructions.
- There is no specific subject
8 Hoa Thuan
reservoir
Near the area of Hoa Thuan reservoir, there are
no sensitive constructions
- There is no specific subject
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 95
CHAPTER 5: ENVIRONMENTAL AND SOCIAL IMPACT ASSESSMENT
5.1. Types and scale of impacts
206. The Subproject to be implemented in the area will cause certain impacts during the
construction stage, however, the impact level is not large and can be minimized. Upon the completion
of construction, the residential areas in the 8 reservoirs will be benefited from the restoration of public
services/facilities, which promote economic growth and access to social services. Important flood
control structures that are roads and dams to be repaired, reinforced, rehabilitated will increase the
safety for people and property in bad weather conditions.
207. Potential negative impacts are identified and screened at each subproject component from the
preparation phase to the operational phase and classified according to the nature of the construction
works. Most negative impacts are temporary, local and reversible due to small to medium-sized
construction scale of the works. Impacts can be minimized by applying appropriate technologies and
specific mitigation measures with the close monitoring of the Consultant, PPMU and local
communities. The table below defines the levels of negative impacts based on the levels of waste
generation by construction activities 4.
Table 51: The criteria for the magnitude of negative impacts
Impact/Level Small Moderate Large
Waste water discharge
(domestic and
industrial wastewater)
Exceeding the technical
regulation on waste
from 1.1 times to less
than 1.5 times and the
discharge volume is
less than 5 m3/day
Exceeding the technical
regulation on waste
from 1.1 times to less
than 1.5 times and the
discharge volume is
less than 5 - 10 m3/day
Exceeding the technical
regulation on waste to
more than 3 times and
the discharge volume is
more than 10 m3/day
Dust and Emissions Exceeding the standard
of 1.1 times to less than
1.5 times with the
emission level of less
than 500 m3/hour
Exceeding the standard
of 1.5 times to less than
3 times with the
emission level of less
than 500 – 5000
m3/hour
Exceeding the standard
of 3 times with the
emission level more
than 5000 m3/hour
Noise Exceeding the standard
of 2 to 5 dB
Exceeding the standard
of 5 to 10 d
Exceeding the standard
of 10 dB
Vibration Exceeding the standard
of 2 to 5 dB
Exceeding the standard
of 5 to 10 dB
Exceeding the standard
of 10 dB
Domestic solid waste: Generate less than
1,000 kg / day
From 1,000 to 2,000 kg
/ day
Arise more than 2,000
kg / day
Hazardous waste Generate less than 100
kg / day
Generates 100-600 kg /
day
Arise more than 600 kg
/ day
Fire and oil spill Less than 2,000 kg 2,000 to 10,000 kg More than 10,000 kg
247. Potential negative environmental and social impacts are also divided into types such as direct,
indirect, short-term, long-term and cumulative impacts.
Direct Impact: direct impact occurs through the direct interaction of a subproject activity with
environmental, social or economic components.
Indirect impact: The indirect impacts on the environment and society are the impacts that are not a
direct result of the subproject, which is often created later, or as a result of a complex. Indirect effects
are also known as secondary effects, or even tertiary effects.
Cumulative impact: is an impact created as a result of a combination of subproject along with other
projects that cause the associated impact. These impacts occur when the incremental impact of the
4 Based on Decree 155/2016 / ND-CP on sanctioning of administrative violations in the field of environmental protection.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 96
subproject is combined with the cumulative effects of past, present, or future projects that have the
potentiality for predictability.
Temporary impacts: are the effects occurring during the construction or within a short time after
construction.
Long-term impacts: are the effects that arise during the construction process but most of the results
appear in the operational phase and can last for decades.
5.2. Potential positive environmental and social impacts
208. Eight reservoirs under the subproject of dam rehabilitation and safety improvement (WB 8) in
Phu Yen province in 7 districts to serve promotion of agriculture and forestry production,
diversification of crop for mountainous area with difficult condition through ensuring of the need of
water for cultivation, living and production which is linked to natural disaster mitigation measures,
aimed to reduce poverty in the project area.
209. To ensure safety for community in communes in the downstream area of eight existing
reservoirs, the upgrading and repairing of downgraded reservoirs play an important meaning in
ensuring safety of dam and reservoirs and ensuring not occurring risk to 3,414 households in the
downstream area.
210. In addtion, the implementation of the subproject will directly ensure the supply of water for
4,509.05 ha of cultivation area of rice and crop, contribute to increasing quality of cultivation soil,
prevent erosion and desertification, reduce pollution of water resource to contribute to improvement of
social-economic condition in the subproject area, support in implementing National target programs in
six subproject communes, including National Target Program on mitigating and adapting climate
change; Water Resources Development Strategy up to 2020 with a vision to 2050; National Strategy
for Rural Clean Water Supply and Sanitation up to 2020; Program on socio-economic development in
mountainous areas up to 2020; National Target Program to build new rural areas
211. Together with the improvement of access roads and operation road of dam and reservoir, the
subproject also contributes to improvement of travelling condition in the project implementation area,
facilitate trade activities and promote local economic development.
212. Support accessibility for vulnerable communities: With many policies and activities ensuring
that affected parties will be informed, fair accessed to the subproject and the benefits of the subproject,
the subproject will strengthen social activities, facilitate vulnerable groups to participate in project
activities, ensure that the projects will bring maximum benefits to the community under current
conditions and reduce adverse impact on them.
213. In addition, after being repaired and upgraded, the landscape of the area around the reservoir
will be more open, contributing to improvement of the overall landscape of the area. This contributes
to the promotion of tourism services in the reservoir area and head works.
5.2.1. Potential negative social impacts
214. Although the implementation of the subproject will not increase the flooded area compared to
the present status and will not increase the reservoir capacity, subproject’s activities are related to land
acquisition, site clearance and excavation, etc. Therefore, negative impacts from the implementation of
subproject should be assessed and evaluated to propose appropriate mitigation measures.The negative
impact of the project is identified, analyzed, and evaluated based on the scope of the project, the
recipient and the timeframe. Impacts are analyzed in three different project implementation phases: i)
pre-construction phase; ii) the project implementation stage; and iii) the operational stage of the
project. Impacts will also be considered by impact type: direct impact, indirect impact, temporary
impact, long term impact. The level of impact of the project depends on two main factors: impacts that
may arise from project activities and the recipient of these impacts.
5.2.2. Assessment and forecasting of impacts during the process of preparing the subproject
215. Because the subproject works are scattered in different areas, With the scale, the scope of each
works is not large and the duration of the construction is not long . Therefore, the environmental and
social issues in this period are mainly considering environmental factors in the technical design
process of the subproject, land acquisition., land clearance, demining, clearing the site to prepare for
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 97
construction. The impacts are analyzed as follows:
Table 52: Sources of impact during construction preparation phase
Source of impact related to waste
Demolition, Clearance Noise, peeled-off herbs In subproject area
Preparation of constrution site Dust, waste (packings, papper, wood
chips)
In subproject area
Source of impact non-related to waste
Occupation of land and site
clearance
Occupation of agricultutre and forestry
land
In subproject area,
Ninh Hoa
management unit of
protection forest
Levelling of construction site Noise In subproject area
Landmines clearance Bombs and mines In subproject area
a. Assessing the suitability of the project to the natural, socio-economic conditions of the
subproject area:
216. The selection of location, design, and planning of the subproject is made on the basis of
evaluation of the objectives of the subproject in accordance with the natural, socio-economic
conditions of the subproject area. The subproject has studied the plan and scale capacity, suitable
technology with with the area of land occupied to maximize the efficiency of the project's land use and
minimize the impact on the current resources, in the following aspects:
For natural and environmental conditions: Based on the results of the assessment of the land use
status of the subproject, the suitability of the subproject with the natural and environmental
conditions, including:
- Transportation: Approach to subproject is quite convenient by route National Highway,
provincial road, inter-district, inter-commune, inter-village roads ... create favorable
conditions for the transportation of raw materials for subproject construction..
- The current status of land use: The land area of the subproject is largely an area of the
reservoir bed, Traffic land belong the management road … Therefore, it is convenient for site
clearance and investment in construction of work items of the subproject.
- Physical environment components: According to the results of the current status assessment of
environmental components of the subproject area as follows:
o In the subproject area, there are no signs of pollution and no significant sources of
environmental pollution exist for the physical environment components and have not
been much affected by the economic activities of the subproject area.
o When compared with the allowable limit according to QCVN for the current
monitoring results showed the environmental load-bearing capacity of the subproject
area is high, therefore, it will create significant advantages for the development of the
subproject.
- Ecosystems and biodiversity: Ecological characteristics of the area are production forest
ecosystems interspersed with agricultural land, The major crops are acacia, eucalyptus, coffee,
rice and vegetables, … with average productivity. In addition, the subproject land area is not
within the scope of biodiversity conservation areas, biosphere reserve areas and there are no
objects on the list of protection and conservation, etc, … Therefore the impacts on the
ecosystem are not large.
- Socio-economic conditions of the subproject area: The subproject was also studied with the
aim of limiting the impacts on the natural and socio-economic environment in order to
promote beneficial factors and limit adverse factors to ensure objectives and functions and
tasks of the project, specifically:
o –Socio-economy: Within the planning area of the project, there are no architectural
works and technical infrastructure subject to relocation and clearance., At the same
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 98
time not resettled people, … Therefore, the project is assessed in accordance with
socio-economic objectives.
o Livelihood: The acquisition of land area is mainly belonging to the reservoir and the
roads are belong the management roads so they do not affect residents and their
livelihood. At the same time, from the downstream dam area of the subproject not
available any significant socio-economic factors affected, the level of damage due to
the right to use water after the dam is minimal.
b) Land acquisition and clearance
217. Because the subproject will only repair and upgrade existing works, The material storage area
is expected to be located in the area of the work protection corridor, so the level of impacts to the
households is negligible. Most of these households build and produce on the corridor of protection of
irrigation works that the People's Committee of Phu Yen has stipulated, all affected households have
judeligible valid residential land. The implementation of the subproject will permanently acquired the
total of 49,274.73 m2 belonged to 16 households and 5 organizations that are People's Committees of
communes, in which::
• Affected land of households includes:
- Land for 2 crop rice cultivation: 771,29 m2
- Land for other annual crops: 1.533,66 m2
- Land for perennial crops: 172,35 m2
- Production forest land: 17.784,36 m2
- Rural residential land: 36,17 m2
• Public land managed by Commune People's Committee: 27,639.3 m2 including 12,428.6 m2 of
other annual crop land and 15,146 m2 of unused hilly land and 64.7 m2 of unused land.
218. In addition, the subproject will temporarily acquired 14,500 m2 to make landfills. The entire
land belongs to public land managed by the People's Committees of communes. Area of camps and
aggregate yards will be used in the dam corridor area of the dam management board. The land mine of
the project will be purchased at the mines that have been licensed and used by competent authorities.
219. There are 15 households that will be affected the trees and crops including: rice, sugarcane,
eucalyptus and acacia. No structures are affected by the subproject.
220. There is no affected household that is severely affected, losing more than 20% of arable land
and houses or from 10% for vulnerable households, No households are in the vulnerable group.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 99
Table 53: Statistics of impacts and scope of land acquisition
No. Works Communes
Permanently Affected area Total permanently
affected area
Area of
temporarily
affected land
(m2)
Rural
Residential
land
Rice land Annual crop land Productive forest
land
Perennial crops
land
Unused hill
land
Unused flat
land (m2) HH CPC
(Unused flat
land)
(m2) HH (m2) HH (m2) HH CPC (m2) HH (m2) HH (m2) CPC (m2) CPC
1 Dong Tron
Reservoir An Nghiep - - - - - - - 18,482.2 6 - - 15,146 1 33,628.2 6 1 2,000
2 Phu Xuan
Reservoir Xuan Phuoc - - 209.4 1 9,894.7 2 1 - - 172.35 1 64.7 1 10,341.15
4
(*) 1 2,000
3
Dong
Khon
Reservoir Hoa Xuan
Tay
- - - - 700
1
- - - - - - 700
1
2,000
4 Hon Dinh
Reservoir - - - - 300 - - - - - - 300 2,000
5 EaDin
1Reservoir Ea Bar - - - - 1,300 1 - - - - - - 1,300 1 1,500
6 Hoc Ram
Reservoir
Hoa Tan
Tay - - - - - - 639.76 1 - - - - 639.76 1 2,000
7 Gieng Tien
Reservoir Son Ha 36.17 2 561.89 4 1,767.56 3 1 - - - - - - 2,365.62 9(**) 1 1,500
8 Hoa Thuan
Reservoir Son Dinh - - - - - - - - - - - - - - 1,500
Total 36.17 2 771.29 5 13,962.26 5 4 19,121.96 7 172.35 1 15,146 1 64.7 1 49,274.73
20
(***) 5 14,500
Source: RAP Report
Note:
(*) There is 1 household effected to rice and annual crop land
(**) There is 1 household effected to rice, residential and annual crop land, 1 household effect to residential and annual crop land
(***) In fact, there are 16 affected households, because 1 household will be affected on rice land and annual crop land, 1 household will be affected on rice,
residential land and annual crop land, 1 household will be affected on residential land and annual crop land
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 100
Table 54: Summary of affected trees and crops
No. Works Communes Number
of HH
Annual crops Perennial trees
Rice
(m2)
Sugar
cane
(m2)
Rice (m2)
Sugar
cane
(m2)
1 Dong Tron
Reservoir An Nghiep
5 3,370
2 Phu Xuan
Reservoir Xuan Phuoc
3 209.4 776.59 34 -
3 Dong Khon
Reservoir Hoa Xuan Tay
0 - - -
4 Hon Dinh
Reservoir
0 - - -
5 EaDin 1
Reservoir Ea Bar
0 - - -
6 Hoc Ram
Reservoir Hoa Tan Tay
1 - - 123 88
7 Gieng Tien
Reservoir Son Ha
6 561.89 1,111 - -
8 Hoa Thuan
Reservoir Son Dinh
0 - - -
Total 15 771.29 1,887.59 3,527 88
Source: RAP Report
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 101
221. Impact assessment: The level of impact of the subproject land acquisition is assessed as
medium, long term because: i) the implementation of the subproject only invests in the repair and
upgrading of works where the worker camp and material yards are expected to be located only In the
corridor of the work protection corridor, the level of impact on households is negligible; ii) most of the
land to be acquired is public land under the management of CPCs in the subproject area.
c) Landmines clearance (UXO):
222. The works of the subproject are spread over 7 communes, 6 districts, Phu Yen province. These
are areas suffered many bombs and mines and explosive objects during the war. Besides, the
implementation area of the subproject has not been in the area of demining before. Therefore, the risk
of landmines / UXO still existing in the land area of the subproject is very high. It is needed to carry
out checking throughout before starting the subproject to avoid unfortunate accidents that could cause
physical damage, affecting the lives of workers, community during the implementation of the
subproject.
223. General assessment of the impact level: High negative impacts, if not considered
appropriately, can affect the safety of people and works, therefore, it is necessary to strictly follow the
implementation steps to ensure a safe works before construction.
d) Impact due to geological exploration drilling
224. Before the plan of design and construction works. The subproject conducted geological
exploration drilling, this process was carried out at all reservoir projects under the subproject.
Specifically, the geological exploration drilling has been drilled in 17 geological boreholes with a
depth of 11-40m at the subproject sites. (Specific locations are presented in the subproject feasibility
study report) to understand the geological conditions and characteristics of aquifers, and conduct
geophysical karota in the borehole.
225. General assessment of the impact due to geological exploration drilling: Low impact
rating. The geological exploration borehole of the subproject has a diameter of 75-100mm, with a
depth of 10-15m. If these bores are not backfilled properly, the pollutants from the surface can follow
rainwater through the bores and affect the quality of underground water in the subproject area.
Therefore mitigation measures are needed to prevent and minimize this impact.
e) Impact due to site preparation activities prior to construction
(ii) Dust and emissions:
226. Dust and exhaust gas are the main sources of air pollution in the preparation stage such as
dust, rock, harmful gases such as CO, NOx, SO2, CxHy.,… arising from activities of transport means
in service of ground clearance transportation and installation of temporary camps.
227. The amount of dust generated varies, depending on the microclimate conditions such as wind
direction, temperature and humidity. According to the World Health Organization (WHO) rapid
assessment method, the amount of dust generated from transport means is as follows:
Table 55: Pollutant load coefficient for trucks running on roads
Pollutant Pollutant load for road trucks (kg/1000km)
Vehicle weight < 3.5 T Vehicle weight 3.5 ÷ 16T
In City rural area Freeway In City rural area Freeway
Dust 0.2 0.15 0.3 0.9 0.9 0.9
SO2 1.16 S 0.84 S 1.3 S 4.29 S 4.15 S 4.15 S
NOx 0.7 0.55 1 1.18 1.44 1.44
CO 1 0.85 1.25 6 2.9 2.9
VOC 0.15 0.4 0.4 2.6 0.8 0.8
Source: Paragraph 77 Page 3-53 Book 1 of the document: “Assessment of sources Air, Water, and
Land pollution a guide to rapid source inventory techniques and their use in formulating
environmental control strategies” Authors: Alexander P. Economopoulos thuộc World health
organization, Geneva, , 1993
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 102
228. Through the table above, we determine the load of pollutants in the exhaust gas of motor
vehicles according to the average coefficient. With the workload in the preparation stage, the
subproject uses trucks with a payload of 7 - 10 tons to operate, it is estimated that one truck will
transport about 4 turns a day, so the number of trucks / day in the subproject area as follows:
Table 56: Number of vehicles transporting cleared vegetation
Reservoir Number of truck transport number of turns truck every
day
Phu Xuan 2 8
Dong Tron 2 8
Hon Dinh 2 8
Gieng Tien 1 4
Dong Khon 2 8
Hoc Ram 2 8
EaDin 1 1 4
Hoa Thuan 1 4
229. The distance traveled by vehicles in area of each reservoir is about 3 km (1 turn go and 1
return). So, the pollutant load of transport means operating in the subproject preparation stage can be
calculated as shown in the following table:
Table 57: Pollutant load emissions of means of transport of transportation of cleared vegetation
Pollutant Pollutant load (kg/1km/day)
Phu Xuan Dong
Tron
Hon Dinh Gieng
Tien
Dong
Khon
Hoc Ram EaDin 1 Hoa Thuan
Dust 0.02 0.1 0.03 0.07 0.02 0.02 0.1 0.03
SO2 0.02 0.1 0.03 0.07 0.02 0.02 0.1 0.03
NOx 0.02 0.1 0.03 0.07 0.02 0.02 0.1 0.03
CO 0.01 0.05 0.02 0.03 0.01 0.01 0.05 0.02
VOC 0.02 0.1 0.03 0.07 0.02 0.02 0.1 0.03
(Notes: S content in DO oil: 0.05%)
230. The preparation time for the subproject is about 01 week. Therefore, the transport activities
that generate dust and emissions occur in the preparation period is about 1 week, the working time of 8
hours / day, the dust load generated in the subproject area averages in 1 Hour as follows:
Table 58: : Pollutant load emissions of means of transport of transportation of cleared vegetation in
1hour
Pollutant Pollutant load (mg/m*s)
Phu Xuan Dong
Tron
Hon Dinh Gieng
Tien
Dong
Khon
Hoc Ram EaDin 1 Hoa Thuan
Dust 0.75 0.75 0.75 0.375 0.75 0.75 0.375 0.375
SO2 0.002 0.002 0.002 0.001 0.002 0.002 0.001 0.001
NOx 1.2 1.2 1.2 0.6 1.2 0.6 1.2 1.2
CO 2.417 2.417 2.417 1.208 2.417 2.417 1.208 1.208
VOC 0.667 0.667 0.667 0.333 0.667 0.667 0.333 0.333
231. To assess the impact of dust and emissions due to transportation of cleared vegetation and
materials during the preparation phase, We apply Sutton calculation model - determine the
concentration of pollutants at any point. The concentration of pollutant is calculated by the formula as
follows :
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 103
u
hzhzE
Cz
zz
−−+
+−
=
2
2
2
2
2
)(exp
2
)(exp8,0
Where:
- C: airborne dust concentration (mg/m3)
- E: Pollutant load from waste source (mg/m.s)
- z: height of calculation point: 1 (m)
- h: height of the road surface compared to the surrounding ground: 0,5 (m)
- u: average wind speed in area 1,7 (m/s)
- x: coordinates of points to be calculated (m)
- z : ust diffusion coefficient in the z direction, determined by the formula:
z = 0,53x0,73
- With x being the distance according to the blowing wind at the calculation point compared to the
waste source (m).
Table 59: Concentrations of pollutants in the air due to transportation of luminescent plants in
reservoirs of Phu Xuan, Dong Tron, Hon Dinh, Hoc Ram and Dong Khon
Calculation parameters Symbol Unit Pollutants
Dust SO2 NOx CO VOC
Pollutant load from waste
source E mg/m*s 0.75 0.002 1.2 2.417 0.677
height of calculation point z m 1
height of the road surface
compared to the surrounding
ground
h m 0.5
average wind speed in area u m/s 1,7
ust diffusion coefficient in the z
direction, determined by the
formula z z - 0.53x0.73
Concentration of pollutants in
the air is from the center of the
road x = 10m
C mg/m3 0.23 0.006 0.368 0.741 0.205
Concentration of pollutants in
the air is from the center of the
road x = 25m
C mg/m3 0.125 0.003 0.119 0.401 0.111
Concentration of pollutants in
the air is from the center of the
road x = 50m
C mg/m3 0.076 0.002 0.122 0.245 0.068
Concentration of pollutants in
the air is from the center of the
road x = 100m
C mg/m3 0.046 0.001 0.074 0.148 0.041
QCVN 05:2013/BTNMT 0.3 0.35 0.2 30 -
232. Above calculated results show:
- Within 10m: NOx concentration exceeds permissible limit compared with QCVN 05: 2013 /
BTNMT - National technical regulation on ambient air quality 1.84 times. Concentrations of SO2,
CO, VOC dust are within the permissible limits compared with the Regulations. However, due to
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 104
the short preparation time of the subproject and the small number of vehicles, the impact is low
and not significant..
- Within 25m, 50m, 100m: Concentrations of Dust, SO2, NOx, CO, VOC are within the permissible
limits compared to the Regulations.
Table 60: Concentrations of pollutants in the air due to transportation of cleared plants in reservoirs
of Gieng Tien; Ea Ddin1, Hoa Thuan
Calculation parameters Symbol Unit Pollutants
Dust SO2 NOx CO VOC
Pollutant load from waste source E mg/m*s 0,375 0,001 0,6 1,2 0,333
height of calculation point z m 1
height of the road surface
compared to the surrounding
ground
h m 0,5
average wind speed in area u m/s 1,7
ust diffusion coefficient in the z
direction, determined by the
formula z z - 0,53x0,73
Concentration of pollutants in
the air is from the center of the
road x = 10m
C mg/m3 0,115 0,003 0,184 0,370 0,012
Concentration of pollutants in
the air is from the center of the
road x = 25m
C mg/m3 0,062 0,002 0,100 0,201 0,055
Concentration of pollutants in
the air is from the center of the
road x = 50m
C mg/m3 0,038 0,001 0,061 0,122 0,034
Concentration of pollutants in
the air is from the center of the
road x = 100m
C mg/m3 0,023 0,001 0,037 0,074 0,020
QCVN 05:2013/BTNMT 0,3 0,35 0,2 30 -
233. Above calculated results show:
- In the range of 10m, 25m, 50m, 100m: all indicators compared to QCVN 05: 2013 / BTNMT -
National technical regulation on ambient air quality are in the permissible limits compared to the
Regulations.
(iii) Waste water generation:
234. In the preparatory stage, the daily activities of officers participating in the survey and site
clearance is main source of wastewater. According to statistics, the subproject will use about 5
workers / 1 reservoir, to implement this phase:
- The amount of domestic wastewater generated in a reservoir during this period is:
5 people x 0.15m3 / person x 1 shift = 0.75 m3 / day / night
- All domestic wastewater generated during this period, if not collected, will affect surface water
quality in reservoirs. The impact of domestic wastewater during this period on the 8 reservoir s is
small.
(iv) solid waste:
- Mainly arising from the daily activities of managers and employees in the preparation stage. Trong
In this period, the maximum number of workers concentrated in the subproject area is 5 people / 1
reservoir. According to the World Health Organization WHO, the domestic waste emission
coefficient is 0.3 - 0.5 kg / person / day. Therefore, it is estimated that the volume of domestic
waste generated in this period is 1.5 - 2.5kg / day.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 105
- Thus, the amount of domestic solid waste generated is not high, the main component is easily
decomposed organic waste such as leftovers, raw materials for processing food for workers
(leftovers, fruits, ...) and a small portion of packaging, water cans.
- The amount of domestic solid waste generated during this period is small and scattered. However,
the area for preparation for the subproject construction is located near the water surface of the
reservoirs, so it will have a certain impact on the water quality if proper management and
collection methods are not available.
(v) Waste from clearing vegetation cover:
235. The total occupied land area of the subproject is 21.64 ha of permanently acquired land and
7.59 ha of temporarily occupied land. Of which acacia area is 0.049 ha (about 88 trees with a diameter
of 5 - 20cm), 1.75 ha of eucalyptus trees with about 3527 trees with diameter of 5 - 15 cm. The
remaining mainly bare land, bushes and a small part of growing crops and rice about 0.077ha and
0.15ha of sugarcane.
236. The subproject will conduct cleared of branches and leaves; cleaning shrubs, low biomass
plants on the whole construction area of work items, auxiliary campsite, waste dump, The reservoir
area will be cleaned in a later stage. The amount of biomass needed to be luminescent and clean up is
calculated by the following formula:
M= S x k (*)
where:
- M: Plant biomass, kg. - S: Area of the calculation area (m2).
- k: Plant biomass coefficient.
237. Plant biomass coefficients refer to the survey data on biomass of 1m2 of vegetation cover
according to Ogawa and Kato's calculation as follows::
Table 61: Biomass of 1m2 of vegetation cover type
Biomass type
Amount of biomass (kg/m2)
Body Bough Leaf Roots
Grass
under the
tree
Total
Shrubs, weeds 0.065 0.054 0.05 0.03 - 0.199
Rich forest tree - 16.53 3.011 7.172 1.575 28.287
Medium forest tree 11.02 2.007 4.781 1.05 18.858
Poor forest trees 7.714 1.405 3.347 0.735 13.201
Scattered the wood
trees 2.378 2.204 0.401 0.956 0.84 6.78
Table 62: The amount of biomass generated during the preparation stage
Reservoir Biomass type Area
(m2)
Biomass
coefficient
k
Biomass
volume (kg)
Gieng Tien
Scattered the wood trees
(planting acacia and eucalyptus) 0 6.780 0.00
Shrubs, weeds 5,365.62 0.199 1,067.76
Dong Tron
Scattered the wood trees
(planting acacia and eucalyptus) 17,144.6 6.780 116,240.39
Shrubs, weeds 20,483 0.199 4,076.12
Ea Din1 Scattered the wood trees
(planting acacia and eucalyptus) 0 6.780 0.00
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 106
Reservoir Biomass type Area
(m2)
Biomass
coefficient
k
Biomass
volume (kg)
Shrubs, weeds 4,300 0.199 855.70
Hoa Thuan
Scattered the wood trees
(planting acacia and eucalyptus) 0 6.780 0.00
Shrubs, weeds 3,000 0.199 597.00
Phu Xuan
Scattered the wood trees
(planting acacia and eucalyptus) 172.35 6.780 1,168.53
Shrubs, weeds 14,168.8 0.199 2,819.59
Hon Dinh
Scattered the wood trees
(planting acacia and eucalyptus) 0 6.780 0.00
Shrubs, weeds 4,300 0.199 855.70
Hoc Ram
Scattered the wood trees
(planting acacia and eucalyptus) 0 6.780 0.00
Shrubs, weeds 4,639.76 0.199 923.31
Dong Khon
Scattered the wood trees
(planting acacia and eucalyptus) 0 6.780 0.00
Shrubs, weeds 4,700 0.199 935.30
(vi) Soci0-economc impacts
238. In fact, according to the survey results, there are activities in the area of livelihoods and
economic development (coffee, maize, sweet potato, rice cultivation ...), however only small scale.
Therefore, overall assessment, the impact on people's activities and economic development is not high.
In addition, the subproject has a satisfactory compensation plan after reaching agreement with the
affected population (About 16 households lose land)..
239. In addition, during the construction of site clearance, due to the concentration of a part of
construction workers, indigenous people can benefit from the provision of simple labor and trading of
necessities for living.
240. The subproject is also studied with the aim of limiting impacts on the natural and socio-
economic environment in order to promote beneficial factors and limit adverse factors to ensure
objectives and functions and tasks of the subproject, specifically:
- –Socio-economy: Within the planning area of the subproject, there are no architectural works and
technical infrastructure subject to relocation and clearance, and not resettlement, etc. … therefore,
the project is evaluated in accordance with socio-economic objectives.
- Livelihood and economy: Land acquisition is mainly of the land belonging to the reservoir and
traffic soil belong management road so it has no impact on residents and their livelihood. At the
same time, from the downstream dam of the subproject no significant socioeconomic factors were
affected, The level of damage caused by the right to use water after the dam is minimal.
5.2.3. Potential Impacts during construction phase
5.2.3.1. Source of impacts
241. Summary of source of impact during construction phase is presented in the table below:
Table 63: Summary of source of impact during construction phase
No Source of impact Impact/Waste Level of impact Object of
impact
A - Source of impact related to waste
1 Construction activities:
- Excavating
Dust, emissions from the
process of transporting
Medium, short,
controllable
Workers,
Residents of
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 107
No Source of impact Impact/Waste Level of impact Object of
impact
- Repair of main dam,
auxiliary dam, overflow,
flood spillways
- Transport of materials,
waste stone and soil
Operation of construction
machinery on site
construction materials are
swept with the wind
the project
area and
Quality of the
surrounding
environment
Dust, emissions from
process of transporting
materials
Medium, short,
controllable
Dust and exhaust of
transport vehicles
Medium, short,
controllable Dust and emissions are
generated by earthworks
Medium, short,
controllable Dust and emissions are
generated by transporting
waste rock and soil
Medium, short,
controllable
Dust and exhaust gas arise
due to the operation of
construction machinery
Medium, short,
controllable
2
- Overflowing rainwater
swept with mud from the
construction site
- Waste water from workers'
activities.
- Wastewater from grease,
chemicals used in
construction
- Construction waste water
- Drilling materials mainly
consist of clay powder
mixed with water and add
bio-termitecide solution.
therefore, if there is no
good management of
wastewater from drilling
operations to treat seepage
of the dam body, it may be
contaminated with spillage
of surface water and
groundwater.
Impact on water
environment
Medium, short,
controllable
Workers,
Residents of
the project
area and
Quality of
water and
soil
environment
3
- Waste rock and soil from
earthworks and
construction activities;
- Domestic waste from
workers' activities;
- Hazardous waste from
related activities
Impact of solid waste Medium, short,
controllable
Quality of the
surrounding
environment
4
- Impact due to sediment
flow generated by erosion
at the construction site
when there is rain
- Excavated soil, stone and
construction materials
spilled out of the
construction area
- Waste disposal activities
are not well managed.
- operating at land mines
causing spillage of soil to
Impact on surrounding
agricultural cultivation areas
Medium, short,
controllable
Quality of the
surrounding
environment
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 108
No Source of impact Impact/Waste Level of impact Object of
impact
surround areas
5 Soil type in construction Impact of dumping soil and
rock in construction
Low, short,
controllable
Quality of the
surrounding
environment
B - Source of impact unrelated to waste
1 Equipment, machines Noise and vibration of
machines and equipment
Low, short,
controllable
People in
subproject
area
2 Concentration of workers at
project site
Impact on socio-economic
conditions of the area
Low, short,
controllable
people in the
subproject
area, workers
Risks of diseases and social
evils due to concentration of
workers.
Risk of gender-based
violence, sexual abuse and
harassment, child labor use,
transmission of infectious
diseases, etc.
Low, short,
controllable
3 Impact due to blocking
water for construction
Impact on socio-economic
conditions of the area
Medium, short,
controllable
people in
subproject
area
4 Traffic
Congestion and
discontinuity due to material
transportation Medium, short,
controllable
people in the
subproject
area
Participants
in the
subproject
area traffic
Damage to transport road
and public works
5
During the construction
process, it may be found
tomb or cultural relics
Impacts on tomb or cultural
relics
Medium, short,
controllable
Local,
contractor
6
The process of transporting
materials; workers
transporting materials may
cause dust, noise, conflict,
borrow from the business
shop on the transport road
or areas near the project.
Impacts on livelihood and
business activities
Low, short,
controllable Residential
7
During the construction
process, it may cause labor
accidents, diseases; natural
disasters.
Risk to health, traffic safety,
labor safety, works safety
Low, short,
controllable
Workers and
people
8
During the construction
process, it may cause lack
of water that women have
to find alternative water
resource.
During the construction,
children can travel across
the project area and
accidents or drowning may
occur with children.
Impact on gender equality
and children
Low, short,
controllable
Women and
children
9 Demand for embankment
material Impact on material mining
Low, short,
controllable
Land mine
area
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 109
No Source of impact Impact/Waste Level of impact Object of
impact
10
The construction process
will destroy the vegetation
layer at construction sites,
soil mines and waste dumps
Workers gathered at the
construction site can cut
down trees, hunt animals in
the lake and the subproject
area
Impact on ecosystems Low, short,
controllable
Types of
plants and
animals
11
Risks and incidents during
the construction process of
the subproject
Incidents of labor accidents
and traffic accidents
Low, short,
controllable People,
property
Accident caused by fire and
explosion
Low, short,
controllable
People,
property
Risks and incidents due to
natural disasters
Low, short,
controllable
People,
property
5.2.3.2. Impact on air environment
a. Arising sources
242. Activities that generate dust and emissions that can affect air quality, include: i) Excavation of
soil and embankment of the works; ii) Operation of construction equipment at construction sites; iii)
Operation of transport vehicles;
b. Impact assessment
243. The level of dust and air pollutants during construction of projects under the subproject
depends on the demand for fuel use, excavation of soil and embankment and mobilization of
machinery and equipment on construction sites. According to the subproject design documents, the
main needs related to dust generation on site are listed in the following table:
Table 64: Aggregate volume of air and dust pollutant emission sources
No. Name of the
reservoir
Volume
Total amount of
diesel fuel
consumption
(Liter)
Total volume
of excavated
soil and
backfilled soil
(m3)
Number of
turns
transported
(turns)
1 Dong Tron 142,830 172,154.51 1,587
2 Phu Xuan 86,490 71,747.48 961
3 Dong Khon 174,240 70,584.07 1,936
4 Ea Din 1 20,700 10,173.47 230
5 Gieng Tien 195,480 18,055.56 2,172
6 Hoc Ram 84,870 116,298.45 943
7 Hon Dinh 48,780 162,967.61 542
8 Hoa Thuan 22,410 12,363.13 249
(Source: Project estimates)
Dust from the transportation of construction materials swept away by the wind
244. According to the document: "Report on environmental impact assessment of component
project to upgrade National Road No. 39 Vo Hoi - Diem Dien (Km91 + 000-Km107 + 522) under
component C of the project of road asset management, Vietnam, pp 3-14 "estimated the emission
factor of dust being swept up when cars transporting construction materials spillage on the road is 0.1
÷ 1 g /m3.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 110
(Source:http://documents.worldbank.org/curated/fr/765181468140033921/pdf/E42510V200VIET0dis
closed01202020130.pdf).
245. According to the Investment Project Report, the total volume of materials to be transported
during the construction period includes the following types:
Table 65: Volume of construction materials
No. Name of the reservoir Unit Volume
1 Dong Tron Ton 15,867.254
2 Phu Xuan Ton 9,607.609
3 Dong Khon Ton 19,361.18
4 Ea Din 1 Ton 2,301.686
5 Gieng Tien Ton 21,718.53
6 Hoc Ram Ton 9,429.107
7 Hon Dinh Ton 5,423.952
8 Hoa Thuan Ton 2,487.51
246. Dong Tron reservoir: The amount of raw materials converted on an average of 1m3 is
equivalent to 2.5 tons. Therefore, the total amount of bricks, cement, iron and steel, and other
materials is: 15,867,254 tons, equivalent to 6,346.9 m3.
247. The total amount of dust emitted from material transport activities during this period is:
0.1×6,349.6 ÷ 1×6,349.6 = 634.96 ÷ 6,346.9 (g) = 0.635 ÷ 6.35 (kg).
248. The supply of raw materials is made based on the construction progress. The construction
period of the entire subproject is 27 months, equivalent to about 810 days. Average daily dust load is:
0.0023 ÷ 0.023 (kg / day).
249. Similar to the calculation with the remaining lakes, we have the following table:
Table 66: Pollutant load of means of transport of transportation of luminescent vegetation in 1hour
No. Name of the reservoir Average daily dust load
(kg / day)
Dust load
(mg/m*s)
1 Dong Tron 0.0008 ÷ 0.008 0.027 ÷ 0.27
2 Phu Xuan 0.0005 ÷ 0.005 0.016 ÷ 0.16
3 Dong Khon 0.001 ÷ 0.01 0.033 ÷ 0.33
4 Ea Din 1 0.001 ÷ 0.001 0.004 ÷ 0.04
5 Gieng Tien 0.0005 ÷ 0.005 0.037 ÷ 0.37
6 Hoc Ram 0.0005 ÷ 0.005 0.016 ÷ 0.16
7 Hon Dinh 0.0003 ÷ 0.003 0.009 ÷ 0.09
1 Hoa Thuan 0.0001 ÷ 0.001 0.004 ÷ 0.04
250. To assess the impact of dust and emissions due to the transport of construction materials
during this period, we apply the Sutton calculation model - determine the concentration of pollutants at
any point. The concentration of pollutants is calculated according to the following formula:
u
hzhzE
Cz
zz
−−+
+−
=
2
2
2
2
2
)(exp
2
)(exp8,0
Where:
- C: airborne dust concentration (mg/m3)
- E: Pollutant load from waste source (mg/m.s)
- z: height of calculation point: 1 (m)
- h: height of the road surface compared to the surrounding ground: 0,5 (m)
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 111
- u: average wind speed in area 1,7 (m/s)
- x: coordinates of points to be calculated (m)
- z : ust diffusion coefficient in the z direction, determined by the formula:
z = 0,53x0.73
- With x being the distance according to the blowing wind at the calculation point compared to the
waste source (m)
251. Replace numbers, We calculate the concentration of dust from the transport of construction
materials being swept away by the wind as follows:
Table 67: Concentrations of pollutants in the air from the transportation of construction materials
swept away by the wind
No. Name of the reservoir
Concentration of pollutants
in the air is from the
center of the road x = 10m
(mg/m3)
Concentration of pollutants
in the air is from the
center of the road x = 100m
(mg/m3)
1 Dong Tron 0.008 ÷ 0.08 0.0017 ÷ 0.017
2 Phu Xuan 0.005 ÷ 0.05 0.001 ÷ 0.01
3 Dong Khon 0.01÷ 0.1 0.002 ÷ 0.02
4 Ea Din 1 0.001÷ 0.01 0.0002 ÷ 0.002
5 Gieng Tien 0.011 ÷ 0.11 0.0023 ÷ 0.023
6 Hoc Ram 0.005 ÷ 0.05 0.001 ÷ 0.01
7 Hon Dinh 0.003 ÷ 0.03 0.0006 ÷ 0.006
8 Hoa Thuan 0.001 ÷ 0.01 0.0003 ÷ 0.003
QCVN 05:2013/BTNMT 0,3 0.3
Source: Consulting unit
252. Compared with QCVN 05: 2013 / BTNMT, the limit value for average TSP is 0.3 mg / m3,
then which is much lower, This shows that the dust from the transportation of construction materials
of all 8 reservoirs at peak time is lower than the permissible limits between 10m and 100m.
Dust and emissions from the operation of transporting vehicles
253. The total volume of raw materials to be transported is shown in Table 51. Using transport
vehicles is truck 7-10 tons.
254. The pollutants being created by activities of vehicles include: Dust, SO2, NO2, CO, VOC,
noise, vibration ... The load of pollutants is shown in the table below:
Table 68: Pollutant load coefficient for trucks running on roads (for 1000 km)
Pollutant
Pollutant load for road trucks (kg)
Vehicle payload 3.5 ÷ 16T Vehicle payload> 16T
In City Out city Freeway Trong TP In City Out city
Dust 0.9 0.9 0.9 1.6 1.6 1.3
SO2 4.29S 4.15S 4.15S 7.26S 7.43S 6.1S
NO2 1.18 1.44 1.44 1.82 2.41 1.98
CO 6 2.9 2.9 7.3 3.7 3.1
VOC 2.6 0.8 0.8 5.8 3 2.4
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 112
(Source: Paragraph 77 Page 3-53 Book 1 document: “Assessment of sources Air, Water, and
Land pollution a guide to rapid source inventory techniques and their use in formulating
environmental control strategies” Authors: Alexander P. Economopoulos belong World health
organization, Geneva, 1993)
255. Load of pollutants:
Table 69: Number of turns transport vehicles
No. Name of the reservoir
Number of turns
of vehicles
transporting the
whole project
Number of
turns vehicles
transported 1
day
1 Dong Tron 1,587 3
2 Phu Xuan 961 2
3 Dong Khon 1,936 4
4 Ea Din 1 230 1
5 Gieng Tien 2,172 4
6 Hoc Ram 943 2
7 Hon Dinh 542 1
8 Hoa Thuan 249 1
256. Temporarily transport time is 8 hrs / day. Estimated travel distance is about 30km (1 turn go
and 1 return).
257. Thus, the dust and emissions from cars transported (applied to trucks of 3.5 ÷ 16 tons, running
outside the city) are determined as the following table:
Table 70: Load of pollutants from cars transporting materials
Pollutant Pollutant load (mg/m*s)
Dong
Tron
Phu Xuan Dong
Khon
EaDin 1 Hoc Ram Hon Dinh Gieng
Tien
Hoa Thuan
Dust 2.813 1.875 3.75 0.938 3.75 1.875 0.938 0.938
SO2 0.0065 0.0043 0.0086 0.0022 0.0086 0.0043 0.0022 0.0022
NOx 4.5 3 6 1.5 6 3 1.5 1.5
CO 9.063 6.042 12.083 3.021 12.083 6.042 3.021 3.021
VOC 2.5 1.667 3.333 0.833 3.333 1.667 0.833 0.833
258. To assess the impact of dust and emissions due to the transport of construction materials
during this period, we apply the Sutton calculation model - determine the concentration of pollutants at
any point. The concentration of pollutants is calculated according to the following formula:
u
hzhzE
Cz
zz
−−+
+−
=
2
2
2
2
2
)(exp
2
)(exp8,0
Where:
- C: airborne dust concentration (mg/m3)
- E: Pollutant load from waste source (mg/m.s)
- z: height of calculation point: 1 (m)
- h: height of the road surface compared to the surrounding ground: 0,5 (m)
- u: average wind speed in area 1,7 (m/s)
- x: coordinates of points to be calculated (m)
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 113
- z : ust diffusion coefficient in the z direction, determined by the formula:
z = 0,53x0.73
- With x being the distance according to the blowing wind at the calculation point compared to the
waste source (m)
259. Replace number, we calculate the dust concentration from the process of transporting
construction materials as follows:
Table 71: Concentration of pollutants through transport of materials
Pollutant Concentration of pollutants in the air is from the center of the road x = 10m
(mg/m3)
Dong
Tron
Phu
Xuan
Dong
Khon
EaDin
1
Hoc
Ram
Hon
Dinh
Gieng
Tien
Hoa
Thuan
QCVN
05:2013
/BTNMT
Dust 0.8626 0.5751 1.1501 0.2875 1.1501 0.5751 0.2875 0.2875 0.3
SO2 0.0020 0.0013 0.0027 0.0007 0.0027 0.0013 0.0007 0.0007 0,35
NOx 1.3802 0.9201 1.8402 0.4601 1.8402 0.9201 0.4601 0.4601 0.2
CO 2.7795 1.8530 3.7060 0.9265 3.7060 1.8530 0.9265 0.9265 30
VOC 0.7668 0.5112 1.0223 0.2556 1.0223 0.5112 0.2556 0.2556 -
Pollutant Concentration of pollutants in the air is from the center of the road x = 100m
(mg/m3)
Dong
Tron
Phu
Xuan
Dong
Khon
EaDin
1
Hoc
Ram
Hon
Dinh
Gieng
Tien
Hoa
Thuan
QCVN
05:2013
/BTNMT
Dust 0.1727 0.1151 0.2303 0.0576 0.2303 0.1151 0.0576 0.0576 0.3
SO2 0.0004 0.0003 0.0005 0.0001 0.0005 0.0003 0.0001 0.0001 0.35
NOx 0.2763 0.1842 0.3685 0.0921 0.3685 0.1842 0.0921 0.0921 0.2
CO 0.5565 0.3710 0.7420 0.1855 0.7420 0.3710 0.1855 0.1855 30
VOC 0.1535 0.1023 0.2047 0.0512 0.2047 0.1023 0.0512 0.0512 -
Source: Consulting unit
260. The above data table shows that at a distance of 10m, compared with QCVN 05: 2013 /
BTNMT, the concentration of pollutants such as dust, NOx in reservoirs: Dong Tron, Phu Xuan, Hoc
Ram and Hon Dinh all exceeded the permissible limits from 2-9 times. Concentrations of other
pollutants such as SO2, CO, VOC in all lakes are within the permissible limits. As this is a one-day
instantaneous impact of 1-4 truck trips and the range extends throughout the transport distance, the
impact is short time and can be controlled.
261. At a distance of 100m, compared with QCVN 05: 2013 / BTNMT, the concentration of NO in
the reservoirs of Dong Tron, Dong Khon and Hoc Ram exceeded the permissible limits by 1-2 times.
other reservoirs are within permissible limits. Concentrations of other pollutants such as SO2, CO,
VOC in all reservoirs are within permissible limits. As this is a one-day instantaneous impact of 1-4
truck trips and the range extends throughout the transport distance, the impact is short time and can be
controlled.
Concentration of pollutants from the operation of construction machinery
262. Volume of oil consumed by machines participating in the construction:
Table 72: Forecast of oil consumption in construction activities at the construction site
No. Name of the reservoir Forecast of oil consumption
Liter diesel Kg/h
1 Dong Tron 142,830 19.18
2 Phu Xuan 86,490 11.61
3 Dong Khon 174,240 23.39
4 Ea Din 1 20,700 2.78
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 114
No. Name of the reservoir Forecast of oil consumption
Liter diesel Kg/h
5 Gieng Tien 195,480 26.25
6 Hoc Ram 84,870 11.39
7 Hon Dinh 48,780 6.55
8 Hoa Thuan 22,410 3.01
Source: FS Report
Note: 1 working shift is 8 hours.
Oil density is: 0.87 kg / liter (Source: Petrolimex, 1994).
263. The load, dust concentration and emissions are summarized in the following table:
Table 73: Load of pollutants from machinery and equipment during construction
Pollutant
Pollutant load (mg/m*s)
Pollution coefficient (kg / ton of fuel) (*): TSP: 4,3; SO2: 20S (S=0,25%); NOx: 65;
CO: 10
Dong
Tron
Phu
Xuan
Dong
Khon EaDin 1
Hoc
Ram
Hon
Dinh
Gieng
Tien
Hoa
Thuan
Dust 0.086 0.052 0.105 0.012 0.118 0.051 0.029 0.013
SO2 0.0002 0.00012 0.00024 0.00003 0.00027 0.00012 0.00007 0.00003
NOx 1.299 0.786 1.584 0.188 1.777 0.771 0.443 0.204
CO 0.2 0.121 0.244 0.029 0.273 0.119 0.068 0.031
Source: (*): Assessment of Sources of Air, Water and Land Pollution, WHO, 1993
264. To assess the impact of dust and emissions generated by construction machinery during the
construction period, we applied the Sutton calculation model - determining the concentration of pollutants
at any point. The concentration of pollutant is calculated by the following formula:
u
hzhzE
Cz
zz
−−+
+−
=
2
2
2
2
2
)(exp
2
)(exp8,0
Where:
- C: airborne dust concentration (mg/m3)
- E: Pollutant load from waste source (mg/m.s)
- z: height of calculation point: 1 (m)
- h: height of the road surface compared to the surrounding ground: 0,5 (m)
- u: average wind speed in area 1,7 (m/s)
- x: coordinates of points to be calculated (m)
- z : ust diffusion coefficient in the z direction, determined by the formula:
z = 0,53x0.73
- With x being the distance according to the blowing wind at the calculation point compared to the
waste source (m)
265. Replace number, we calculate the dust concentration from the process of transporting
construction materials as follows
Table 74: Concentration of pollutants from the operation of construction machinery
Polluta
nt
Concentration of pollutants in the air is from the center of the road x = 10m (mg/m3)
Phu
Xuan
Phu
Xuan
Phu
Xuan
Phu
Xuan
Phu
Xuan
Phu
Xuan
Phu
Xuan
Phu
Xuan
QCVN
05:201
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 115
3
/BTNM
T
Dust 0.0263 0.0159 0.0321 0.0038 0.0361 0.0156 0.009 0.0041 0.3
SO2 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 0.35
NOx 0.3983 0.2411
0.4857
2
0.0577
3
0.5451
1
0.2365
3
0.1360
2
0.0625
1 0.2
CO 0.0613 0.0371 0.0747 0.0089 0.0839 0.0364 0.0209 0.0096 30
Polluta
nt
Concentration of pollutants in the air is from the center of the road x = 100m (mg/m3)
Phu
Xuan
Phu
Xuan
Phu
Xuan
Phu
Xuan
Phu
Xuan
Phu
Xuan
Phu
Xuan
Phu
Xuan
QCVN
05:201
3
/BTNM
T
Dust 0.0053 0.0032 0.0064 0.0008 0.0072 0.0031 0.0018 0.0008 0.3
SO2 0.0000
12
0.0000
07
0.0000
15
0.0000
02
0.0000
17
0.0000
07
0.0000
04
0.0000
02 0.35
NOx 0.0797 0.0483 0.0973 0.0116 0.1091 0.0474 0.0272 0.0125 0.2
CO 0.0123 0.0074 0.015 0.0018 0.0168 0.0073 0.0042 0.0019 30
Source: Consulting unit
266. Through the above data table, we see that at a distance of 10m, compared with QCVN 05:
2013 / BTNMT, the concentration of pollutants such as NOx in lakes of Dong Tron, Phu Xuan, Dong
Khon, Hoc Ram, Hon Dinh all exceeded the permissible limits. from 1.5 to 2.5 times. Concentrations
of other pollutants such as Dust, SO2, CO, in all remaining lakes are within the permissible limits.
267. At a distance of 100m, compared with QCVN 05: 2013 / BTNMT the concentration of
pollutants is within the permissible limits. Concentrations of other pollutants such as Dust, SO2, CO,
NOx in all lakes are within the permissible limits.
Concentration of pollutants through excavation and embankment
268. In the construction of subproject work items, diffuse dust arises mainly from the following
activities: Digging and embankment, shoveling soil, stone by machine; transporting soil and stone; etc
…
269. According to the estimation, the volume of excavated soil is shown in section 3.1.2 of this
report. Through the data of excavated soil and embankment, we have the following results:
270. Dust emission factor due to excavation activities in construction is shown in the following
table:
Table 75: Pollution emission coefficient due to construction activities
No. Causes of pollution Estimates emission factors
1 Dust generated by excavation, ground leveling, wind-blown
up (sand dust) 1 - 100 g/m3
2
Dust generated by the process of loading and unloading
construction materials (cement, soil, sand, stone ...),
machinery and equipment.
0.1 - 1 g/m3
3
Smoke discharged by vehicles, construction mechanics
containing dust, CO, hydrocarbon, SO2, NOx ... (trucks of
3.5-16 tons of diesel oil run with S = 0.5%)
Dust: 4.3kg/Ton DO;
SO2 :0.1kg/ Ton DO
NOx: 55kg/Ton DO;
CO: 28kg/Ton DO
VOC: 12 kg/ Ton DO
4 Vehicles transporting sand and soil to scatter on the road
surface generate dust 0.1 – 1 g/m3
Source: Assessment of Sources of Air, Water, Land Pollution, Who, Geneva, 1993
271. Based on the pollution emission coefficient in the above table and the volume of soil and stone
in the work, we calculate the amount of suspended dust flying into the air during the construction of
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 116
the subproject (Working time 8 hours / day, 27 months corresponds to 810 days) as follows:
Table 76: The amount of dust generated by the excavation and embankment and leveling process at
the construction site
No. Name of the reservoir
Total volume of
excavation and
embankment
(m3)
The amount of dust
generated during the
excavation and
embankment (g/h)
1 Dong Tron 172,154.51 26.57 2,657
2 Phu Xuan 71,747.48 11.07 1,107
3 Dong Khon 70,584.07 10.89 1,089
4 Ea Din 1 10,73.47 1.57 157
5 Gieng Tien 18,055.56 2.79 279
6 Hoc Ram 116,298.45 17.95 1,795
7 Hon Dinh 162,967.61 25.15 2,515
8 Hoa Thuan 12,363.13 1.91 191
272. Dust concentration of excavation and embankment activities is calculated through the
following table (With a construction area of 2.5 ha and an altitude of emission of 10m):
Table 77: D ust concentration due to operation to excavation and embankment
No. Name of the reservoir
The amount of dust
generated during the
excavation and
embankment (g/h)
Average dust
concentration
(mg/m3/h.)
1 Dong Tron 26.57 2,657 0.11 10.1
2 Phu Xuan 11.07 1,107 0.04 4
3 Dong Khon 10.89 1,089 0.04 4
4 Ea Din 1 1.57 157 0.01 1
5 Gieng Tien 2.79 279 0.01 1
6 Hoc Ram 17.95 1,795 0.07 7
7 Hon Dinh 25.15 2,515 0.10 10
8 Hoa Thuan 1.91 191 0.01 1
Source: Consulting unit
273. From the results of the above calculation, comparing with QCVN 05: 2013 / BTNMT shows
that the average dust concentration during the peak period in the subproject construction area, the
concentration of dust due to excavation and embankment activities exceeds limits permission term.
Therefore, it is necessary to have mitigation measures during the excavation and embankment.
Impact of dust and emissions from the operation of 30m3 / h concrete batching plants
274. During the operation of the batching plant, the source of environmental pollution is mainly
caused by the dust emission source:
- Material preparation stage: Dust generated by unloading during mixing of materials. The source of
dust is scattered, not concentrated and not large.
- Mixing step: After quantification is complete, the mixing jar rotates. Workers transport materials
to the batching plant (In case the mixing tank still concrete or the outlet of the mixing tank is not
closed, the control system will not work). When a worker reaches the location where the material
is poured into the mixing container, the material is poured into the mixing container and the
cement is discharged. When the concrete is finished discharging, Workers will return to the scale
frame to carry out the next batch, simultaneously discharging water and additives.
- Forced mixing time is about 30-45s. After mixing time, the concrete mixture is discharged into the
conveying device.
275. The main subjects affected by dust pollution from concrete mixing plants are 2-3 workers
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 117
operating the mixing plants and workers loading materials for the mixing plants. Due to small mixing
plant only 30m3 / h and little construction work volume. On the other hand, the batching plant only
operates for a very short time during the construction process. So the impact is low. However, there is still a
need for measures to prevent and minimize dust for workers performing the plant operation.
c) Assess the impact level: moderate and controllable.
276. The results of the above impact analysis show that the concentration of dust and some air
pollutants exceeds the permissible standard within a distance of 10m from the boundary of the
construction works. However, according to the results of the site investigation, the construction works
of the subproject are located very far from the residential area, the nearest residential area is about
500m from the construction site. According to the calculation results, dust generated from vehicles
does not exceed the permissible standards, However, in fact most of the roads to the site have many
gravel roads, based on experience from many construction subprojects, which shows that the activities
of construction trucks on these roads often generate dust very big. Besides, the surrounding area is
agricultural land planted with coffee, rice, corn ... of the community, open spaces, types of air
pollutants easily diluted. As a result, the two affected objects are construction workers and families
near the gravel roads that operate the subproject's vehicles. However, these impacts can all be
mitigated through appropriate mitigation measures.
5.2.3.3. Impact due to noise and vibration
a. Source of impacts
277. Noise, vibration is generated from construction activities on site; transportation of materials;
construction machines.
b. Impact evaluation
• Impact by noise
278. Noise sources mainly from operation of bulldozers and trucks. Based on the typical source
noise level of the equipment (the following table), it is estimated that the source noise level is 80.8 ÷
96.6 dBA according to the formula:
L= 10lg n
i
Li.1,010
Where:
− L is the total noise level.
− Li is the noise level of source i.
− n Total noise source.
− Source: Pham Ngoc Dang 2003. Air environment. Science and Technology Publishing
House 2003
279. Source noise level and noise level reduced by distance from construction activities are
determined similarly to house demolition activities. Results are presented in the following 2 tables:
Table 78: Calculation results of noise level at source during construction phase
No. Machine name / Capacity Noise at 1.5m source (dBA)
Laeq Average
1 Hand drill set 85 ÷ 88 87
2 Crane 10 ton 87 ÷ 90 89
3 Crane 6 ton 75 ÷ 80 78
4 Tired- crane 16 ton 88 ÷ 94 91
5 Tired-crane 6 ton 87 ÷ 89 88
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 118
No. Machine name / Capacity Noise at 1.5m source (dBA)
Laeq Average
6 Tower crane 25T 78 ÷ 81 80
7 Table vibrator 1Kw 80 ÷ 87 84
8 Puncher 3.5 KW 85 ÷ 88 87
9 Concrete pump 10 m3/h 76 ÷ 81 79
10 Concrete pump BT 50m3/h 85 ÷ 89 87
11 Grout pump 40KW 78 ÷ 79 79
12 brick breakers 82 ÷ 83 83
13 Backhoe excavator 1.25m3 79 ÷ 82 81
14 Welding machine 23KW 80 ÷ 83 82
15 Drilling machine 4.5KW 80 ÷ 85 83
16 Portable rock drill f42mm 85 ÷ 89 87
17 Drilling jumbo fl05 86 ÷ 87 87
18 Drilling jumbo f76mm 76 ÷ 81 79
19 Elevator hydraulic 75 ÷ 80 78
20 Air compressor 1200m3/h 84 ÷ 88 86
21 Air compressor 600m3/h 83 ÷ 87 85
22 Generator (500KVA) 82 ÷ 86 84
23 25m3 concrete mixer 84 ÷ 88 86
24 Bulldozer ≤110Cv 82 ÷ 87 85
25 Bulldozer ≤ 140Cv 82 ÷ 86 84
26 Backhoe excavator 1.25m3 80 ÷ 84 82
27 Betonite Circulation Mixing Tank 750l 81 ÷ 85 83
QCCP(1) 85
QCCP(2) 70dBA (6h-21h);55dBA (21h-6h)
Note: QCCP (1) - Permissible standard according to QCVN 24/2016 / BYT - National technical
regulation on noise - Permissible noise exposure level at the workplace; QCCP (2) - Permissible
standards according to QCVN 26: 2010 / BTNMT - National technical regulation on noise
Source: Pham Ngoc Dang 2003. Air environment. Science and Technology Publishing House 2003
280. To predict noise levels attenuating by distance, use a formula:
L= 10 lg )()( 1
1
2 dBr
r a+( Applicable to road sources)
281. Where: L - noise reduction level at distance r2 from noise source; r1 - distance of sound level
is typical for noise source (r1 = 8m); a - coefficients include the influence of the noise absorption of the
terrain (a = 0,1 - the ground has grass).
282. Based on the above formula and input noise level in the above table, we can calculate the
result as follows:
Table 79: Forecast of noise reduction according to distance from source
No. Machine name / Capacity Noise at 1.5m source (dBA)
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 119
10m 20m 30m 40m 50m
1 Hand drill set 70 64 61 58 56
2 Crane 10 ton 72 66 63 60 58
3 Crane 16 ton 61 55 52 49 47
4 Crane 25 ton 69 63 60 57 55
5 Tired- crane 16 ton 75 69 65 63 61
6 Crawler crane 16 ton 72 66 62 60 58
7 Tower crane 25 ton 63 57 54 51 49
8 Table vibrator 1Kw 67 61 58 55 53
9 Puncher 3.5 KW 70 64 61 58 56
10 Concrete pump 10 m3/h 62 56 53 50 48
11 Concrete pump BT 50m3/h 71 65 61 59 57
12 Grout pump 40KW 62 56 53 50 48
13 brick breakers 66 60 57 54 52
14 Backhoe excavator 1.25m3 64 58 55 52 50
15 Welding machine 23KW 65 59 56 53 51
16 Drilling machine 4.5KW 66 60 57 54 52
17 Portable rock drill f42mm 71 65 61 59 57
18 Drilling jumbo fl05 70 64 61 58 56
19 Drilling jumbo f76mm 62 56 53 50 48
20 Elevator hydraulic-driven 61 55 52 49 47
21 Air compressor 1200m3/h 70 64 60 58 56
22 Air compressor 600m3/h 69 63 59 57 55
23 Air compressor 600m3/h 68 62 58 56 54
24 250 Liter concrete mixer 69 63 60 57 55
25 Bulldozer ≤110Cv 68 62 59 56 54
26 Bulldozer ≤ 140Cv 67 61 58 55 53
27 Backhoe excavator 1.25m3 66 60 56 54 52
28 Betonite Circulation Mixing Tank
750l 66 60 57 54 52
Average 67 61 58 55 53
Resonance 79.2 75.7 73.2 71.2 65.2
QCCP(1) 85
QCCP(2) 70dBA (6h-21h);55dBA (21h-6h)
Note: QCCP (1) - Permissible standards according to QCVN 24/2016 / BYT - National technical
regulation on noise - Permissible noise exposure level at work place, QCCP (2) - Standard allowed
according to QCVN 26: 2010 / BTNMT - National technical regulation on noise
Source: Consulting unit
283. Based on the results of noise propagation forecasting for independent noise sources used in the
subproject construction, it is showed that:
284. When compared with the permissible limits according to QCVN 24/2016 / BYT - National
technical regulation on noise - The level of exposure that allows noise in the workplace, most devices
with noise propagation are within Permissible limit ≤ 85dBA at distance <5m from noise source.
285. When compared with the permissible limits according to QCVN 26: 2010 / BTNMT -
National Technical Regulation on noise, the equipment with average noise propagation of 1 hour
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 120
reaching the permissible limit ≤ 70dBA during the day is at ≥ 20m from source. However, when
compared to the night time limit, the distance to ensure noise propagation from <50dBA devices is
mostly at distances> 50m from the source..
286. Calculating the noise propagation taking into account the resonance of the machines on the
site, the noise value is about 85.4 dBA at a distance of about 5m from the noise sources. Evaluation
results at distances ≥ 10m, noise meets QCVN 24/2016 / BYT - National technical regulation on noise
- Permissible level of noise at workplaces and at distances ≥ 40m is valuable total value is less than the
allowable limit in the daytime according to QCVN 26: 2010 / BTNMT - National technical regulation
on noise.
287. The above evaluation results show that the noise from operating construction equipment has
low to moderate impacts on the surrounding environment. However, due to the frequent, prolonged
impact along with the operating time of equipment in construction, the impacts on the health of
workers are regularly present at the subproject and dand directly implement construction the impact
level is significant when regular, long-term exposure is required.
• Impact due to vibration
288. Same as noise, vibration depends on many factors such as equipment condition, construction
conditions and measures, so that there are no adequate studies on vibrations of construction activities
at present. Therefore, we use the vibration standard for all kinds of vehicles and construction
equipment of the "US Environmental Protection Committee - Noise from construction equipment and
NJID construction equipment, 300.1, December 31, 1971" on the vibration level at the source, as well
as using the waveform vibration propagation forecasting model like the above noise with appropriate
adjustment factor to serve as a basis for evaluation for construction:
289. To forecast the amount of vibration attenuated by distance, use a formula:
L = L0 – 10lg (r/r0) – 8,7a (r – r0) (dB)
Where:
- L is the vibration in dB at a distance "r" meters away from the source;
- Lo is the vibration in dB measured at a distance "ro" meters from the source. Vibration at a
distance of ro = 10 m is generally acknowledged as source vibration.
- a is the intrinsic vibration reduction coefficient with clay ground of about 0.5.
290. Based on the vibration of construction equipment and application of the above formula, we
can predict the vibration level as shown in the following table:
Table 80: Vibration level decreases with the distance in construction
No. Machine name /
Capacity
Vibration at the
source (dBA)
Spread vibrations
with distance
Vibration at the source (dBA) Spread
vibrations with distance
LVeq 1.5m 5m 10m 20m 50m
1 Hand drill set 76 ÷ 79 77.5 64.0 58.0 52.0 42.0
2 Crane 10 ton 78 ÷ 81 79.5 66.0 60.0 54.0 44.0
3 Crane 16 ton 78 ÷ 80 79.0 65.5 59.5 53.5 43.5
4 Crane 25 ton 66 ÷ 69 67.5 54.0 48.0 42.0 32.0
5 Steam wheel crane 16
ton 66 ÷ 72 69.0 55.5 49.5 43.5 33.5
6 16T crawler crane 66 ÷ 68 67.0 53.5 47.5 41.5 31.5
7 Tower crane 25T 70 ÷ 73 71.5 58.0 52.0 46.0 36.0
8 Table vibrator 1Kw 72 ÷ 78 75.0 61.5 55.5 49.5 39.5
9 Puncher 3.5 KW 76 ÷ 79 77.5 64.0 58.0 52.0 42.0
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 121
No. Machine name /
Capacity
Vibration at the
source (dBA)
Spread vibrations
with distance
Vibration at the source (dBA) Spread
vibrations with distance
LVeq 1.5m 5m 10m 20m 50m
10 Concrete pump 10 m3/h 59 ÷ 64 61.5 48.0 42.0 36.0 26.0
11 Concrete pump BT
50m3/h 67 ÷ 71 69.0 55.5 49.5 43.5 33.5
12 Grout pump 40KW 61 ÷ 62 61.5 48.0 42.0 36.0 26.0
13 brick breakers 65 ÷ 66 65.5 52.0 46.0 40.0 30.0
14 Backhoe excavator
1.25m3 66 ÷ 69 67.5 54.0 48.0 42.0 32.0
15 Welding machine
23KW 73 ÷ 76 74.5 61.0 55.0 49.0 39.0
16 Drilling machine
4.5KW 73 ÷ 78 75.5 62.0 56.0 50.0 40.0
17 Portable rock drill
f42mm 77 ÷ 81 79.0 65.5 59.5 53.5 43.5
18 Drilling jumbo fl05 72 ÷ 73 72.5 59.0 53.0 47.0 37.0
19 Drilling jumbo f76mm 63 ÷ 68 65.5 52.0 46.0 40.0 30.0
20 Elevator hydraulic 63 ÷ 67 65.0 51.5 45.5 39.5 29.5
21 Air compressor
1200m3/h 72 ÷ 75 73.3 59.8 53.8 47.8 37.8
22 Air compressor
600m3/h 71 ÷ 74 72.3 58.8 52.8 46.8 36.8
23 Air compressor
600m3/h 79 ÷ 73 71.5 58.0 52.0 46.0 36.0
24 250 Liter concrete
mixer 69 ÷ 73 71.3 57.8 51.8 45.8 35.8
25 Bulldozer ≤110Cv 68 ÷ 72 70.3 56.8 50.8 44.8 34.8
26 Bulldozer ≤ 140Cv 68 ÷ 72 70.3 56.8 50.8 44.8 34.8
27 Backhoe excavator
1.25m3 68 ÷ 71 69.3 55.8 49.8 43.8 33.8
28 Betonite Circulation
Mixing Tank 750l 67 ÷ 70 68.3 54.8 48.8 42.8 32.8
Min 61.5 48.0 42.0 36.0 26.0
Max 79.5 66.0 60.0 54.0 44.0
Ever. 71.0 57.5 51.5 45.5 35.5
∑Lv 90.3 76.8 70.8 64.8 54.8
Note: QCCP - Permissible standard according to QCVN 27: 2010 / BTNMT - National technical
regulation on vibration
Source: Consulting unit
291. With these values, when compared with QCVN 27: 2010 / BTNMT - National technical
regulation on vibration, it is showed that the types of vibration-controlled equipment include: earth
construction machines (excavators, crane, excavator ...); types of compactors, piling, drilling
machines, chisels ...
292. The average equivalent vibration level at the source of the average construction equipment of
all devices is about 59dB, the total vibration level near the source is about 81.0dB. The propagation of
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 122
vibration of devices with values within the permissible limits according to QCVN 27: 2010 / BTNMT
- National technical regulation on vibration at a distance of less than 5m from the source location.
c) Impact assessment: Average negative impacts and can be controlled.
293. Based on the results of the current status assessment of the subproject area, it is significantly
away from the surrounding residential areas, and no buildings, structures are affected So the impact of
vibration on the environment is not great. However, vibration created by operating equipment is likely
to directly affect workers on the site and especially those who directly control the construction
vehicles and equipment of the subproject..
5.2.3.4. Impact on water environment
a. Source of impact
294. The following activities create waste or impact factors likely to affect water and sediment
objects in the subproject area, including i) Overflowing rainwater with mud from construction site ii)
wastewater from worker activities; iii) wastewater from concrete mixing activities; iv) Construction
waste water. (v) Greases, chemicals used in construction
b. Impact assessment
295. Domestic wastewater from worker camps includes wastewater from water used for preparing
meals (Vna) and washing and cleaning (Vtg). Based on standards of synthetic water use per capita
including water used for eating and drinking and living in rural residential areas follow: "TCDXVN
33: 2006 Water supply - Pipeline network and design standards", water level used for living and eating
is 80l / person / day and 80% of water used will be discharged into the environment (Item a, Clause 2,
Article 39 of Decree No. 80/2014 / NDCP August 6, 2014 on drainage and wastewater treatment).
Construction waste water is generated by: Concrete mixing station; washing stones and sand; concrete
maintenance, washing machinery. The amount of construction waste is generally not high, with the
major pollutants are sand, stone, and cement, which are of low toxicity, easily deposited on the
construction drainage route. Estimated construction wastewater is about 15m3 / month for Gieng Tien
reservoir works:
Table 81: Estimates of sources of substances causing water contaminants
No. Name of the
reservoir
Number of
workers
(people)
Demand for
water use (m3
/ day)
Domestic
wastewater
volume (m3 /
day)
construction
waste water
volume
(m3 / day)
1 Dong Tron 60 4.8 3.84 1.0
2 Phu Xuan 40 3.2 2.56 0.7
3 Dong Khon 50 4 3.2 0.8
4 Ea Din 1 30 2.4 1.92 0.5
5 Gieng Tien 30 2.4 1.92 0.5
6 Hoc Ram 50 4 3.2 0.8
7 Hon Dinh 60 4.8 3.84 1.0
8 Hoa Thuan 30 2.4 1.92 0.5
Source: Consulting unit
Table 82: Concentration of pollutants of domestic wastewater during construction phase
No. Pollutant Unit Concentration
QCVN
14:2008/BTNMT
A B
1 BOD mg/L 300 ÷ 360 30 50
2 COD mg/L 480 ÷ 680 - -
3 TSS mg/L 466.6 ÷ 966.6 50 100
4 Total Nitơ mg/L 40 ÷ 80 - -
5 Phospho mg/L 5.3 ÷ 26.7 6 10
6 Amoni mg/L 16 ÷ 32 5 10
7 Total Coliform MPN/100 mg/L 6.6.106÷ 6.6.109 3,000 5,000
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Report on Environemental and Social Impact Assessment (ESIA) 123
No. Pollutant Unit Concentration QCVN
14:2008/BTNMT
8 Fecal Coliform MPN/100 mg/L 6.6.105÷ 6.6.106 - -
9 Helminth eggs MPN/100 mg/L 666.6 - -
Source: (*) - Technical Center for Urban and Industrial Zones - CEETIA, 2007
Table 83: Concentration of pollutants in construction waste water
No. Pollutant Unit Construction waste
water (*)
QCVN 40:2011
(column B)
1 pH - 6.99 5.5 ÷ 9
2 TSS mg/L 663.0 100
3 COD mg/L 140.9 150
4 BOD5 mg/L 29.26 50
5 NH4+ mg/L 9.6 10
6 Total N mg/L 29.27 40
7 Total P mg/L 4.25 6
8 Fe mg/L 0.72 5
9 Zn mg/L 0.004 3
10 Pb mg/L 0.055 0.5
11 As mg/L 0.05 0.1
12 Grease mg/L 0.02 10
13 Coliform MPN/100mL 4.3.103 5,000
Source: (*) - Technical Center for Urban and Industrial Zones - CEETIA, 2007
296. Water environment can be polluted by waste water containing high organic components
arising from daily life, sediment, oil and grease in construction waste water, rainwater running through
the surface of the workplace to remove the dirt, rock, soil and other grease. Water parameters such as
turbidity, suspended solids, nitrate, sulfate, BOD5, COD, total coliform will increase significantly and
reduce water quality in reservoirs and downstream areas.
297. Domestic wastewater: Domestic wastewater in construction arises mainly due to the activities
of workers on construction sites. Due to the characteristics of the location of the subproject
construction sites, the workers camp will be located on the construction site. According to the above
table, the volume of domestic wastewater (estimated at 80% of total water use) will not be high, but
this type of wastewater will contain typical pollutants such as BOB, TSS, total Nito, total phosphorus,
Coliform, fecal coliform, helminth eggs play the role of disease transmission. This source of receiving
domestic wastewater is surface water in downstream area of reservoirs under the subproject. The
current status of the downstream surface water environment according to the monitoring results is not
yet polluted.
298. Construction waste water: from the construction of main construction items such as dams,
spillways, culverts due to construction conditions, it is necessary to apply measures to crank up dikes,
leading the flow, thus generating large water pit such is continuous pumping during construction, this
is also considered construction waste water because the water has been turbid due to earthworks and
rock excavation, which may contain oil, grease, cement. Estimate the total volume is not high, only
focus on the period of activities related to concrete. The body receiving construction wastewater is the
surface water environment in the reservoirs under the subproject due to construction of intake,
upstream slope and downstream surface water due to construction of downstream slope, Spillway, and
Management road. On the other hand, the soil environment in the construction site area may also be
polluted due to construction waste water. The status of soil and surface water in the subproject area
has not been contaminated.
299. Wastewater from concrete batching plant: Due to the production process of concrete batching
plant is fully automatic and self-contained, in addition to the not use of chemicals in the process of
using and and limiting waste water generation. The operation of the concrete batching plant is installed
with modern technology imported from Thailand so the wastewater generated is almost impossible
because the concrete mixing ratio is available and closed. Therefore assess the impact level from
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Report on Environemental and Social Impact Assessment (ESIA) 124
concrete batching wastewater is Low.
300. Stormwater runoff: The composition of stormwater runoff is very difficult to predict and
change according to the time of rain, mainly concentrating high concentrations in the early stage of the
rain. Pollutants in stormwater runoff at the construction phase are mostly natural stone components
due to construction and a small amount of domestic waste scattered on the surface. Applying the
formula to calculate erosion coefficient according to the formula of Wischmeier (Nguyen Van Nhung
(editor), 1997: Map of potential soil erosion in Vietnam (the mainland scale of 1: 1,000,000). Institute
of Geography, National Center for Natural Science and Technology, Hanoi, 40 pages):
100K= 2.1.10-4M1,14(12-OS) + 3.25(A-2) + 2.5(D-3)
Where: K is the coefficient of soil erosion (%); M is the grain weight, defined (%) M = (% Limon
+% fine sand) (100% -% clay); OS is the content of soil organic matter (%); D is the coefficient of
dependence on soil permeability; A is the coefficient depending on the shape, arrangement and
type of soil structure.
- Based on the rainfall of the subproject area, the slope and the composition of soil and rock,
applying the level of soil erosion without grasses for the excavation and embankment areas,
the erosion coefficient is calculated as 0.18% (For soil group yellow-red). Relatively
forecasting the amount of potential eroded soil generated at the construction sites for Phu
Xuan reservoir: The total potential soil erosion during the construction process of Phu Xuan
reservoir (m3) = Total excavated volume Covering during the construction process of reservoir
Phu Xuan: Volume potential soil erosion (m3) = Volume of excavated soil and backfilled soil
(m3) * K (0.18%) = 71,747.48*0.18% = 129.15 m3. Similar to the remaining lakes, we have
the forecast results of potential soil erosion during the subproject construction process as
follows:
Table 84: Predict potential soil erosion due to rain from construction items of the subproject
No. Name of the reservoir
Excavation and
embankment
volume (m3)
The amount of potential
soil erosion (m3)
1 Dong Tron 172,154.51 309.88
2 Phu Xuan 71,747.48 129.15
3 Dong Khon 70,584.07 127.05
4 Ea Din 1 10,173.47 18.31
5 Gieng Tien 18,055.56 32.50
6 Hoc Ram 116,298.45 209.34
7 Hon Dinh 162,967.61 293.34
8 Hoa Thuan 12,363.13 22.25
301. Oil, grease, chemicals used in construction: Using chemicals to kill termites in the first stage,
change oil, wash machinery and equipment on site .... The area for washing and cleaning machines
and equipment on site of the project is located near the entrance of the project. Wastewater from this
area arises mainly: Waste oil from periodic oil change; Water for vehicle maintenance and car
washing; Solid waste contains oil from the operation of motorcycles and maintenance activities ...
302. Wastewater from drilling operations to treat seepage of dam body: Mixed mortar is
composed of small solid particles suspended in liquid solvent. Belonging to this type there is the
mortar cement, i.e mixed cement with water; Mortar soil-cement forms from soil mixture and cement
with water, and bentonite mortar consists of a mixture of bentonite in water. Cement mortar is widely
used and is often a mixture of water and cement in a ratio of 10: 1 to 2: 1. If this mixture of slurry
during the treatment of seepage and spillage occurs in the environment, it will affect the surface water
of the lake and surface water in the downstream area of the dam, such as showing the ability of mortar
It causes contamination of groundwater, surface water when encountered and adverse health effects
for workers during manual grouting. Absolutely do not allow toxic chemicals in the grout. This is
particularly noticeable when there are additives and is determined by the tightness and safety of the
additive device combined with the appropriate durability.
c. Impact assessment: negative impacts are medium and can be controlled
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Report on Environemental and Social Impact Assessment (ESIA) 125
303. Subjects are mainly affected by water pollutants in the area where the works are under the
subproject will be the surrounding water bodies and soil environment. However, according to the
survey results in the field, the area around the reservoirs does not have ponds, lakes and rivers flowing
through. However, the construction works are located in areas with a certain slope. Wastewater from
camps affects the area around the camp site, This is an unoccupied area under the management of
CPCs, so the direct impacts are very low, however, this is a source of disease and communicable
diseases from workers. Wastewater from construction activities, and from construction equipment
maintenance activities on works (if possible) affect only within the construction site. Appropriate
control measures are required.
5.2.3.5. Impact of solid waste
a. Source of impact:
304. Solid waste from construction activities of sub-project was derived primarily from: i) Waste
stone and soil from excavation and backfilling activities during construction; ii) domestic waste from
worker activities; iii) Hazardous waste from related activities.
b. Impact assessment:
305. The volume of solid waste generated depends strictly on the volume of excavation and
embankment on the construction site, the number of workers to be mobilized on sites, construction
management, construction skills of workers on sites. Total construction waste and domestic waste
generated from construction activities of the subproject are estimated in the table follow:
Table 85: Estimated volume of excavation, embankment and domestic waste generated from
subproject construction activities
No. Name of the reservoir Volume waste soil and
stone to be dumped (m3 )
Volume of solid waste
(kg/month)
1 Dong Tron 38,238.49 1,440
2 Phu Xuan 13,041.30 960
3 Dong Khon 5,094.05 1,200
4 Ea Din 1 1,527.55 720
5 Gieng Tien 1,775.56 720
6 Hoc Ram 7,706.41 1,200
7 Hon Dinh 6,774.23 1,440
8 Hoa Thuan 945.37 720
Total 75,102.96 8,400
Source: Consulting unit
306. According to the above table, the volume of excavated soil that cannot be reused on
construction site, needs to be transported and disposed is very little for each construction item, this
amount of waste is mainly generated in the first phase of construction works. The estimated monthly
domestic waste is not much, however, the calculated volume is applicable to the number of workers
mobilized on site at peak times, while the actual number of workers required daily on construction will
be less.
307. For hazardous wastes (HWs): According to statistical results, the volume of hazardous waste
generated mainly in the subproject construction phase includes waste metals, oil-contaminated solid
wastes, paint sludge, ... The impacts of hazardous solid waste are assessed at high level and probability
of occurrence. However, because the volume generated from the subproject construction is not high
and the strict implementation of hazardous solid waste management measures, the probability of
impacts is limited to the lowest level. In addition, according to the design plan, the use of termite
chemicals will be carried out at all the subproject sites. Accordingly, Metavina 10DP is expected to be
used, and if it is not well managed, there will be risks of water and soil pollution around the
construction sites.
c. Impact assessment: negative impacts are medium
308. Subjects receiving impacts from solid waste are mainly soil, water, air and public health
environments. However, according to the survey results, the area around the sub-project does not have
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Report on Environemental and Social Impact Assessment (ESIA) 126
water bodies, rivers and streams that may be affected by generated solid waste. The impact on
groundwater quality requires a long-term infiltration period and a larger amount of arising. For the air
environment, some toxic odors and gases (mainly H2S) can be created, however, with airy conditions,
these toxic gases are easy to dilute to the threshold of no impact. For public health, the survey results
also show that there are no household living within 500m from the construction site. Therefore, it
mainly affects workers and officials on the construction site. The dispersal of solid waste of different
types will have cumulative effects on other activities in the region over time that may cause flow
congestion or unsanitary environment, requiring appropriate management measures.
5.2.3.6. Impact on surrounding agricultural cultivation areas
a. Source of impact:
309. Areas of surrounding agricultural land will be affected by: i) mud flow arises due to erosion in
the construction area when there is rain; ii) Excavated soil and embankment soil, stone, construction
materials spilled out of the works; iii) Waste disposal activities are not well managed; iv) operating at
land mines causing spillage of soil to surrounding areas.
b. Impact assessment:
310. Mud flow is generated by erosion at the construction site of the main dam, spillway and some
management road sections. It is estimated that in the rainy season, the potential eroded soil volume per
meter of construction foundation is forecasted to be: 0.37m3. This amount of soil has been liquefied by
rain, easily overflowing to the low areas around the structures. Potential impacts during soil
excavation and embankment (about 12 months for each construction site) mostly happen in heavy rain
period (September-December).
311. In addition, as calculated in the design dossier of the subproject, most of the excavated soil
will be reused for the foundation embankment. Therefore, the amount of excavated soil will need to be
gathered on the construction site before being implemented for the purpose of backfilling. If this
activity is not well managed, there will be a risk of spilling into the surrounding areas affecting the
farming activities of households close to the construction site.
312. In addition, the area of agricultural land around the disposal area and the soil pit area will also
be affected if measures to manage soil spills are not well implemented.
c. Impact assessment: negative impacts are medium
313. : Since all construction works in the subproject are located in the agricultural cultivation area,
the impact on this activity may occur, however, the level of impact is not significant because: i)
According to the results of the field survey, the areas surrounding agricultural land are mainly
cultivated with coffee and fruit trees, so the impact of soil and rock dumping from the construction site
will be limited, the cultivation area of paddy rice, maize and crops is quite far from the construction
works; ii) The area of construction works with a temporary ground, arranged around the construction
area are mainly the land managed by the People's Committees of communes, so the activities are less
likely to exceed the boundary of site clearance of the construction site; iii) According to the
estimation, most of excavated soil will be used for backfilling, so the volume of waste soil and the
need for additional soil will be very small, besides, unused soil will be disposed in many different
disposal areas, therefore, the size of the disposal area will be very small, quite similar to the land
exploitation activity carried out at many different pits, which are close to construction sites
5.2.3.7. Impact on traffic and traffic safety issues
a. Source of impacts
314. The following activities may affect road traffic activities, including: iii) construction activities
at the reservoirs; ii) Transporting materials across National highways, provincial roads and local roads
causing slippery and damage to community utilities;
b. Impact evaluation
315. Obstructing community traffic: Currently, the dam routes are the roads of local people moving
around. Therefore, when subproject construction will directly affect the travel of people on this road.
Therefore, the project owner will take reasonable measures to regulate traffic so that people can still
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Report on Environemental and Social Impact Assessment (ESIA) 127
walk during construction.
316. The risk of traffic collisions on transport routes: Vehicles carrying materials and waste from
material mines / yards and construction areas will lead to soil sticking on the tires. Spilled soil on the
road will generate dust and will also mixed with water. Mud layer on the road surface creates slippery
conditions and increases the risk of traffic insecurity. In addition, the increase in means of transport on
inter-village and inter-commune roads creates a great risk of traffic collisions between the subproject
vehicles and the local community's vehicles.
317. Damage and degradation of roads: According to calculations in the design dossier, the roads
for transportation activities are national highways, district roads, inter-village roads. For inter-village
roads, the transport distance varies from 900m to 3km, currently the roads are in very low loading
capacity, easily affected by the operation of large transport vehicles.
c. Impact assessment: Negative impacts are moderate and can be controlled through an appropriate
impact management plan.
318. According to the survey results, the structures under the subproject are located in remote areas,
the roads are very limited. So the local community is using operating route and the main dam, spillway
at the construction works as internal roads, so the construction on these locations will hinder the travel
needs of the community, it is necessary to have appropriate traffic management measures.
319. In addition, it is expected that some inter-village roads will be used as transport roads,
currently these roads are at very low loading capacity, the increase in the operation of vehicles with
large loads will cause degradation of the road surface and disruption of horizontal drainage culverts,
irrigation ditches along the edge of the road. There is a need to assess the initial status, commitment
between project owners, contractors and local authorities.
5.2.3.8. Impact due to raw material exploitation
a. Source of impacts:
320. Due to the exploitation of embankment soil under the subproject, This activity is carried out in
8 surrounding mines.
b. Impact analysis
321. The proposed land mines for construction works are defined in Section 2.2.3 of this report.
However, according to calculations, the demand for land for each works is very few. The necessary
procedures for taking soil at these mines have been implemented. Activities of soil exploitation at soil
mines will cause some impacts on the environment such as affecting the surrounding agricultural land,
breaking environmental landscape, losing vegetation cover ....
c. Impact assessment: negative impact is low
322. The impact of construction material exploitation is very low, due to the following reasons: i)
most of the materials purchased, only the fill soil will be taken from the local mines; ii) the need for
filling soil in very small lakes, most of the mines are located around the lake; iii) vegetation in these
areas is only grass and shrubs and there are no rare species need to be preserved; iv) The location of
those mines is under the management of the CPC, away from the agricultural cultivation areas of the
community.
5.2.3.9. Impact due to dumping soil and stone
a. Source of impact:
323. Waste excavated soil stone types that must not be used on construction sites are gathered at
regional disposal areas.
b. Impact assessment:
324. Waste stone and soil are organic soil and plant roots arising from the excavation of road and
soil generated from soft soil treatment areas. The type of soil and rock that does not meet the material
requirements of the subproject should be removed and contains no harmful ingredients. This is a good
source of materials that can be used to level the civil areas without high requirements on the base
material. Like excavation, embankment and material transportation, in addition to the impacts arising
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Report on Environemental and Social Impact Assessment (ESIA) 128
during the transportation process, waste soil in the construction areas can also spill into adjacent areas
causing the situation to be buried or muddy.
c. Impact assessment: negative impact is low
325. Impact from this activity is assessed to be low due: i) The excavated soil and embankment soil
that needs to be dumped is organic soil with no toxic ingredients; ii) The amount of soil to be dumped
is small; iii) scattered waste disposal activities in many different locations; iv) The area of planned
disposal sites is the vacant land under the management of the Commune People's Committee or land of
some households wishing to level up; v) The vegetation in these areas is only grass and shrubs and
flora and fauna, no rare species need to be preserved.
5.2.3.10. Impacts due to gathering workers
a. Source of impacts:
326. During the construction of the subproject, a large number of workers from other localities will
be concentrated during the construction period. The emergence of this number of workers and living
activities and work of this workforce will have a significant impact on the lives of local people. The
appearance of a number of male workers will show the following evils in the locality: (i) Local order
and security may have disturbances;(ii) Cultural conflict between workers and local people (iii)
conflicts, conflicts between workers and local people; (iv) appear social evils such as gambling,
alcohol, use of stimulants; (v) There is a risk of overcrowding in health services, public services, and
food for workers.... The bad management of workers will lead to many negative issues. As has
happened before in some subprojects. Workers and people have conflicts that, if not resolved, also
cause fighting conflicts that affect the body, and life....
b. Impact evaluation:
327. The risk of spreading diseases: due to poor sanitation in temporary houses and the camping
area in the construction area will lead to diseases such as dengue fever, eye disease ... of workers, then
spreading widely to surrounding residential areas. In addition, there is the possibility of spreading
social diseases such as HIV / AIDS by other local workers and vice versa, infected workers from local
residents.
328. Conflict arises: Conflicts may occur between local people and migrant workers due to cultural
differences, lifestyles, voices, regions. In particular, in the local community of the sub-project area,
some Catholics, Protestants, and Buddhists should have their own beliefs compared to workers and
non-religious people, so if workers are not managed, it will cause some conflicts. In addition,
collisions and disputes over materials, property theft of local people and businesses, damage to
materials and equipment, crops ... are the causes of disputes and conflicts, destabilizing local order.
c. Impact assessment: negative impact is medium
329. The arising impacts are assessed as medium due to: i) the demand for workers concentrated at
construction sites is not large, and in a short period of time; ii) The construction site is located
relatively isolated, away from the concentrated residential areas; iii) The contractor has plans to use
some local sources of labor.
5.2.3.11. Labor accidents for workers
a. Source of impacts
330. Operating equipment and machines, performing construction activities on sites and camp
conditions.
b. Impact analysis
331. A number of machinery and equipment will be mobilized on the construction site, so the
operation of machinery and equipment will cause the risk of labor safety for workers. Electric shock
accident may happen when there are electrical leakage or unsafe electrical management on site. In
addition, workers’ health will be affected, there will have many types of illnesses due to unsafe
accommodation conditions, no periodic health care….
c. Impact assessment: negative impact is medium
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Report on Environemental and Social Impact Assessment (ESIA) 129
332. The medium impact of equipment mobilized on site is not super long, super heavy or easy to
operate. However, it is necessary to strictly follow the labor safety measures proposed during the
subproject construction phase to ensure safety for workers and local communities and rapid response
mechanisms when there are risks of labor insecurity
5.2.3.12. Discontinuity of irrigation water due to construction
a. Source of impacts:
333. During the construction of items such as: Construction of water intake, dam construction,
flood spillway. Water withdrawal of water in the reservoir for construction is necessary. Depending on
the construction volume of items, the time for water withdrawal is from 1-3 months. And the time of
accumulating water is 1 month. Therefore, in the course of construction, interrupting irrigation water
for agriculture and forestry is inevitable.
334. In addition to the interruption of irrigation water, the cutting of water may cause disputes over
irrigation water sources, disturbing social order and safety locally. Or cause gender inequality because
women are more likely to work in agriculture and they will have to find alternative water sources.
b. Impact analysis
335. The renovation and repair of dams at 8 reservoirs will lead to potential disruption of irrigation
water, thereby affecting agricultural production..
Table 86: Beneficial area and number of HHs likely to be affected due to interruption of irrigation
water supply during the subproject construction
No. Name of the
reservoir Irrigation area (ha)
Number of affected
households downstream
1 Phu Xuan 1,500.00 1,500
2 Dong Tron 1,950.00 1,200
3 Hon Dinh 221.19 32
4 Gieng Tien 55 25
5 Dong Khon 337.86 32
6 Hoc Ram 200 500
7 EaDin 1 200 100
8 Hoa Thuan 45 25
Source: * from works screening sheets of the subproject
c. Impact assessment: negative impact is low
336. Because the technical design of the subproject is the embankment embankment plan, So the
water source is maintained at a minimum to ensure production activities. The construction of sluice
interrupting the flow will be arranged with an alternate flow, so the damage caused by disruption of
irrigation water for agriculture is well controlled.
5.2.3.13. Impact on graves, cultural heritage and public works
337. There are no any tombs built around the existing construction site around the subproject area.
Besides the subproject with a radius of 3 km, there is absolutely no cultural heritage, so the
construction does not affect the graves and surrounding cultural heritages.
338. In the process of soil excavation and embankment, it is possible to detect artifacts, cultural
heritage or graves. In that case, the progress of the project will be affected and the involved parties
must take action. Therefore, it is necessary to have a procedure to handle the object detected in the
construction process of the subproject.
339. During construction, the number of vehicles operating at such a peak time may cause
degradation of inter-village roads and soil roads on the dam surface.
340. Transporting construction materials and machinery can cause subsidence and cracking road.
Construction process should take measures to protect transportation routes.
341. Overall assessment of impacts of detecting graves, cultural heritage and public works: Low
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Report on Environemental and Social Impact Assessment (ESIA) 130
impact and can be controlled
5.2.3.14. Impact on livelihood and business activities by the construction
342. Construction activities may disrupt water supply for production and business activities of
some households. According to the survey, some households are living along the road to the dam,
there are many small traders but this is not their main source of income. However, to minimize and
limit impacts, project owner will work closely with the local authorities to assess the impact level to
have appropriate support. In addition, during the construction process, contractors plan and organize
construction to minimize the impact on these affected households. Local authorities make
compensation and support in accordance with the policies stated in the RAP to ensure not to worsen
the livelihood and business status of AHs.
343. 100% of people said that they were concerned about the environmental impact due to
transportation of soil and construction materials which could make the environment dusty. People also
worry that many migrant workers will break the quiet environment of the countryside and can cause
security problems such as theft. Therefore, it is assessed as average negative impact and can be
managed through appropriate mitigation plans.
344. Overall assessment of construction impact on livelihoods and businesses of households
near the subproject area: Low impact and controllable
5.2.3.15. Impact on gender equality and children
345. The subproject investment will mainly affect the environment during construction, due to
material transport and machinery equipment noise,…In addition, when participating in the
construction, workers moving from other places can also bring diseases and their activities may break
the tradition and local regulations. Women are at high risk of HIV / AIDS infection, traffic safety. Or
during construction if workers are not managed well can happen unwarranted relations with the people
in subproject area causing loss of family happiness leading to gender violence and subsequent bad
consequences. In addition, poor women and women-headed households in the project area are also at
risk of damage to economic assets due to water cut during construction.
346. During construction in 4 reservoirs the dam surfaces are also traffic roads between hamlets or
road to farm. At night, women and children are at risk of accidents caused by the construction site or
poor management of workers can lead to incidents such as teasing or rape. Moreover, gender violence
can also occur during the subproject implementation as there will be a number of female workers.
Roads will be more difficult and dusty in the rainy season, it can affect the psychology of children
who are afraid to go to school and is the cause of children leaving school, so the contractor has plan to
carry out the construction mainly in the dry season
347. In the construction process, active children are always concentrated around the construction
site, which can cause occupational accidents. Especially, the lakes are deep, it is easy to drown for
children. There are also risks if the contractor hires child labor, resulting in a violation of the
Vietnamese labor law. Therefore, there must be a safety policy for children, protection of children's
rights, not allowing children to sell goods or provide services around the lrepairing and upgrading
reservoir areas.
348. According to the survey data of households in the subproject area, for family activities: child /
child care; cleaning the house; cooking / housework is mostly female work. These jobs take a lot of
time for women so they have less time to do other activities such as participating in social activities,
learning to improve themselves and on the other hand, participating in decision making important in
the family: The majority of households agree that two people take part in making big decisions in the
family (purchasing valuable assets, weddings, kinship, village, etc.), accounting for 46.2% of both
sexes key decision making and implementation. However, it should be noted that up to 51.6% of
households where only men are the decision makers and perform large-scale work in the home. This
shows that patriarchal, conservative thinking still exists in many cultures and errors of families here.
Thereby shows us, when there is a sub-project, the WB always supports women are equal and take
part in subproject works, It is also difficult to ensure that women here can participate in the subproject
vbecause they still depend on housework and decision-making power for men is the head of the
household.
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5.2.3.16. Negative impacts on ethnic minority people
349. The implementation of the subproject has firstly brought a lot of positive impacts on the lives
of ethnic minorities, in particular, the Muong people. However, during the implementation of the
subproject, especially during the construction process, certain impacts on this community in the 4
subproject communes cannot be avoided. The communes with ethnic minorities participating in the
survey are Xuan Phuoc, Hoa Tan Tay, Ea Bar, Son Dinh, the ethnic minority groups here are mainly
Cham and Khmer people. Especially when constructing and repairing intake water, cutting production
water is mandatory, so the lack of production water in a season affects the lives of people here a lot.
However during construction will try to execute when people finish harvesting agriculture and another
measure that can be used is to embankment of to serve the people.
350. Currently, ethnic minority households have lived in harmony and alternately with Kinh ethnic
households in the subproject area. Due to being in this area for a long time, the typical customs and
practices of the ethnic minorities here are no longer in harmony with the customs of the Kinh ethnic
people, Agricultural cultivation is still the main occupation of ethnic minority households here.
351. Construction of the subproject will require water cutting at intervals of 1-3 months, therefore,
EM households in subproject area may be affected by lack of water for agricultural production.
Besides living with the Kinh, the economic and social access of EM households is still slow, The
problem of understanding about HIV / AIDS is still limited, so the process of gathering workers and
communicating will affect EM people.
352. Overall assessment of the impact of subproject on EM people: Low impact and
controllable
5.2.3.17. Impacts on the ecosystem
353. The subproject activities generate wastes that are likely to affect aquatic ecosystems including:
waste oil, oil-containing wastes, construction wastewater and domestic wastewater.
- Waste oil and oil-containing waste is a kind of hazardous waste. The aquatic ecosystem in the
reservoir bed is not diverse and has few categories, in the reservoir there is no aquaculture and
the aquatic ecosystems downstream of the reservoir are the aquaculture ponds of the people
and the area of the canals is mainly of the Carp (Cyprinus), Drift fish (Cirhina molitorella),
Tench, Tilapia, Snail carp, shrimps and crabs... The consultant has assessed the current status
of aquatic species in the project area in section 4.2.2 of this report. Some construction sites,
where there are many workers (from 30 to 60 people ), domestic wastewater has
concentrations of BOD5, COD and TSS many times higher than Cmax according to QCVN14:
2008 / BTNMT with a coefficient K = 1,2 , calculated for production establishments of less
than 500 people when discharged into type B water source according to QCVN 08: 2008 /
BTNMT. Solid waste components have many biodegradable organic substances (leftovers)
and difficult to decompose (shells, plastic)..
- Solid wastes and domestic wastewater are common wastes and will be collected and treated
according to Decree 59/2007/ND-CP on solid waste management.
- Especially in the construction process, the withdrawal of water for construction of items will
affect aquatic ecosystems in the reservoirs. However, reservoirs have the main purpose is to
ensure the water source for irrigation and to regulate the climate in the surrounding area.
Therefore, the status quo of the reservoirs does not cultivate any aquatic species. At present, in
the lake, there are only types of carp, drifting fish, carp, carp, and mainly tilapia in the lake. In
terms of plants in reservoirs, mainly algae, there are no rare species that need to be preserved.
Therefore, the impacts on aquatic ecosystems in the lakes are low and negligible.
354. The activities of the subproject also affect terrestrial ecosystems such as: solid waste, waste
rock and soil, overflowing stormwater, which affects agricultural and forestry land around the area
subprojects and the destruction of plant ecosystems for construction site cause impact due to cutting
tree…
- Construction of the subproject will generate a quantity of solid waste and waste stone and
waste soil, if not well managed, the dumping of solid waste, soil and stone into the
environment around the subproject or dumping in the wrong location will affect the terrestrial
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Report on Environemental and Social Impact Assessment (ESIA) 132
ecosystem, altering soil quality, or degradation of plants around the subproject.
- In the process of creating the construction site, it is necessary to cut down trees and crops.
However, in the subproject area, most of the surrounding area is productive forest land and
agricultural land. Terrestrial ecosystems are not diverse, with plants such as acacia,
eucalyptus, rice, sugarcane, ... and shrubs or weeds. However, it is necessary to prohibit
workers from cutting down trees outside the clearance area of the subproject. Therefore, the
impact in this process on terrestrial ecosystems is low.
- The types of terrestrial animals around the subproject area are not diverse and few species.
Because the area around the subproject area is mainly production forest land and agricultural
land, the main animals are livestock of people around the subproject such as pigs, chickens,
ducks, geese, buffaloes, cows and goats. ... Therefore, the impact in this process is small. In
the process of preparing the construction site, the subproject will have to cut trees, crops, dig
soil, which will cause loss of habitat for reptiles, amphibians, insects and birds..
- Around the subproject area, there are no rare species that need to be protected.
- Around areas where clearance is carried out to create construction ground, no wild animal
populations inhabitable but mostly the small number of animals raised by the households
surrounding the subproject, therefore, the construction ground clearance does not affect the
habitat of any wild animals.
355. Impact assessment: low negative impacts, controllable
5.2.3.18. Impact on water supply and water usage in downstream
356. Impact on water supply and use water in downstream may occur during construction. Disputes
can occur, or dissatisfaction among households when when interrupting irrigation water supply.
Therefore, the commitment of the households in village meetings is needed and Information should be
disseminated in advance regarding possible situations. However, besides the main water source taken
from irrigation reservoir, households can get water from many water slots as additional source of
irrigation water during 3 months of construction .
357. Water sources for drinking and living are taken from dug wells and drill wells. Therefore,
cutting water for constructing and renovating dams will not affect the water sources of people in the
subproject area.
358. The objective of the subproject is to strengthen the capacity of relevant local authorities to
manage and implement the dam upgrade, encourage participation, enhance knowledge and
understanding of repair management and facilitate the equal cooperation between beneficiary users
and regulatory authority and local government. This will help local people and communities develop
collective water management mechanisms to avoid possible conflicts between stakeholders and
minimize potential short-term and long-term impacts. Specifically, there may be a conflict between the
irrigation company (or local irrigation officer) with people using irrigation water when there is a
discrepancy in the water supply plan. Or, there is a conflict between water users, especially upstream
and downstream households, when there is an uneven, unfair..
5.2.3.19. Evaluate and forecast environmental impacts due to risks and incidents of the
subproject
a. Incidents of labor and traffic accidents
359. Labor accidents can occur at any of the activities during the construction process if it does not
comply with the labor safety regulations.
360. Major causes of labor accidents include:
- Shortcomings in the design of technological measures such as measures to support formwork, anti-
landslide measures which may lead to collapse of the works or labor accident.
- Shortcomings in the construction organization: unreasonable arrangement of labor shift, incorrect
arrangement of work order, using non-standard materials, shortening process of construction ...;
- Technological shortcomings: The machine is not the right type or is not in full quantity. Means or
equipment such as lack of safety, covering, lack of prevention signaling system ...;
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Report on Environemental and Social Impact Assessment (ESIA) 133
- Violating technical safety procedures and norms;
- Causes of Risk: Accidents caused by vehicles, electric accidents ... On rainy days, risk of labor
accidents is high due to slippery ground, electric problems, and land subsidence...
b. Accidents caused by fire and electrical risk
361. Flammable and explosion hazards may occur in the case of transport and storage of fuel, or
due to the lack of safety of the temporary power supply system, resulting in damage to persons and
property during construction. Specific causes can be identified as follows:
- Temporary fuel storage facilities for construction, machinery and equipment (paint, petrol, DO
diesel, FO) are sources of causing fire. When the incident occurs, serious human, economic or
environmental damages may occur;
- When deploying the project, electricity will be used for the construction site, cooking activities.
The human negligence will cause the fire and explosion in the storage of petroleum.
- Accidents caused by leakage, spillage and scattering of construction chemicals: In the construction
process, there are some kinds of admixture and chemicals such as plasticizers and accelerated
intensification of concrete and chemicals, anti-rust paint, expansion additives for cement mortar
....These chemicals and additives are very toxic, they exist in the form of powder or liquid. If they
are leaked or poured into the water and air environment, it will cause serious environmental
pollution. The use of chemicals and additives during the construction can cause fire, burns or labor
accidents if there is no preventive measures.
c. Risks and incidents due to natural disasters
- Risks and incidents caused by natural disasters mainly occur:
- Fire and explosion caused by lightning: In the rainy season, lightning strikes occur on machines
and equipment operating on construction sites, causing the risk of human and property damage..
- Incidents due to storms, thunderstorms, prolonged subsidence, affecting construction structures,
construction progress may be slow and construction quality is not guaranteed.
- In addition to incidents caused by rain, there were also incidents of earthquakes: Moving,
collapsing structures already constructed.
d. Assessment: These incidents do not occur very often but when they occur, the consequences will
be very serious, which can cause great damage to property and people so investors and
construction units need to take measures to prevent and respond to minimize damage.
e. Overall assessment of environmental impacts due to risks and incidents of the project: Average
impact but can be controlled and prevented
5.2.4. Assessment of site-specific impacts
362. There are 6/8 reservoirs with sensitive receptors easily affected by subprojects as shown in the
table follow:
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Table 87: Specific impacts of the subproject
No. Works Works, description Potential impact Impact scale Impact level
1
Dong
Khon
Reservoir
Do Nhu Day Primary School is located right
next to the materials transportation route of Hon
Dinh and Dong Khon Reservoir
- Impact of dust, noise and vibration to
elementary students.
- Risks of traffic safety, spilling of
materials.
- Damaged transport route
- Affecting School
Organization, Students,
Officials and Employees.
- Impact on residents on the
transport route.
- Impact on road works.
- Impacts on the environment
around the transport route
- Low
Mr. Nguyen Van Phu household Hires surface
of Dong Khon lake for aquaculture
- Impact on the livelihood of household:
Mr. Nguyen Van Phu.
- The impact of construction water cuts
interrupted household bidding and
raising fish.
- Impacts on the quality of the rearing
water environment due to construction
activities.
- Impact on 1 household: Mr.
Nguyen Van Phu
- Impacts on the surrounding
environment of subproject
area
- Average
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No. Works Works, description Potential impact Impact scale Impact level
2 Hon Dinh
Reservoir
The route of transporting raw materials of Dong
Khon reservoir goes through bridge old and at
risk of collapse
- Impact on traffic safety
- Impact of vehicle tonnage transporting
materials to the load and safety of
bridges.
- In the seasonal period, farmers transport
agricultural products through the bridge
position so the transportation of raw
materials will cause conflicts with the
transportation of agricultural products
of the people..
- Impact on air environment
- Impact on public works in
Hoa Xuan Tay commune.
- Impact on people in Hoa
Xuan Tay commune.
- Impacts on the environment
around the transport route
- Low
3
Dong
Tron
Reservoir
The location of Dong Tron dam has lighting
system and electricity to serve spillway
- Impacts due to the construction of dam
items must cut power and move lighting
system and electrical lines..
- Impact on the lives and safety of
construction workers caused by
electrical incidents. - Impact on Dong Cam
Agriculture One Member
Company Limited.
- Impact on Tuy An power
company.
- Average
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No. Works Works, description Potential impact Impact scale Impact level
4 Ea Din1
Reservoir
The management road and material
transportation road through the Ea Din1
reservoir, Dam is also an important
transportation route of Ea Bar commune. At
present, this route is the route to transport
agricultural and forestry products of the farms
in the subproject area. The road has been
concreted
- In the seasonal period, farmers transport
agricultural products through the bridge
position so the transportation of raw
materials will cause conflicts with the
transportation of agricultural products
of the people.
- Causing local traffic jam due to the
construction of dams and bridges over
the spillway.
- Impact on the travel of people the
move over construction site.
- Polluting dust, noise and vibration.
- Impact on public works of
Ea Bar commune.
- Impact on people of Ea Bar
commune.
- Impacts on the surrounding
environment of the
subproject area
- Low
5 Hoc Ram
Reservoir
The route of raw material transportation of Hoc
Ram reservoir goes through the National
Highway 1A, and Le Trung Kien High School -
Dong Hoa district; Nguyen Chi Thanh
- Impact of dust, noise and vibration to
students at schools.
- Risks of traffic safety, spilling of
materials.
- Damaged transport routes. - Affecting School
Organization, Students,
Officials and Employees.
- Impact on residents on the
transport route.
- Impact on road works.
- Impacts on the environment
around the transport route
- Low
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No. Works Works, description Potential impact Impact scale Impact level
Secondary School, Le Thanh Ton High School
and Xuan Long Pagoda
6
Gieng
Tien
Reservoir
- The management road and material
transportation road through the through Gieng
Tien Dam is also an important transport route.
And sugar cane farmers in the area still use this
route to transport sugarcane materials...
- Impacts on traffic safety, conflicts
between sub-project material
transportation and people's sugarcane
transport.
- Causing local traffic jam
- Impact on the travel of people the
move over construction site.
- Polluting dust, noise and vibration.
- Impact on public works of
Son Ha commune
- Impact on people in Son Ha
commune.
- Impacts on the environment
around the transport route
- Low
7 Phu Xuan
Reservoir
Near the area of Phu Xuan reservoir, there are
no sensitive constructions.
- There is no specific impact - -
8
Hoa
Thuan
Reservoir
Near the area of Hoa Thuan reservoir, there are
no sensitive constructions
- There is no specific impact - -
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5.2.5. Evaluating and forecasting of impacts during the operational phase of the subproject
363. Most of the potential impacts during the operational phase are expected to be positive.
Temporary construction effects such as dust, noise and vibration will be stopped during operation.
When being completed, the use of land, landscape, local income and socio-economic tends to be
stable. Improving dam safety and improving irrigation services will promote socio-economic
development and improve livelihoods of downstream communities. Some status will be changed in
comparison with the previous status.
a. Risk of drowning
364. Reservoir can be a place for washing and bathing activities of people. Therefore, there will be
always the risk of drowning if appropriate preventive measures are not taken.
b. Flood due to discharge and dam breaking
365. Due to the characteristics of the subproject, it is to improve dam safety so that the risk of dam
breaking is very low. Emergency discharge of flood can affect downstream communities if it is not
informed in advance; cause damage to assets, crops and people and cause indirect impacts such as
environmental pollution, diseases and loss of income.
c. Repair and maintenance of works
366. These activities can lead to water cut-off in a short time. This would cause direct impact on
the agricultural production and living activities of the downstream people and will indirectly cause
effects such as reduce of income due to time of no cultivation, environmental pollution and disease
due to lack of water. However, this effect is considered as minor because the time of repair and
maintenance is short (only a few weeks).
d. Increase the use of fertilizers and pesticides
367. Although the irrigation area is not increased compared to the original design, but the crop
structure will be change by the amount of irrigation water from the reservoir is kept stable and is not
seepage through the dam body. On the other hand, the area of water shortage will be supplemented to
ensure designed irrigation area therefore, it will increase the amount of fertilizer and pesticides. On the
other hand, according to data on crop structure and fertilizers and pesticides use coefficient in section
4.3.1 of this report, the structure of crop and fertilizer and pesticide use coefficient have been not
changed in the subproject area. However, the area recovered from the original design will increase the
amount of fertilizer and pesticides by 10-15%. As a consequence, the environment and human health
can be affected by toxic chemicals.
368. Besides, according to interviews with farmer associations in the sub-project provinces, the
status of waste treatment from pesticides is as follows: After being used, most of boxes and bottles of
pesticides are thrown directly at the place of use. It is easy to find pesticide bottles and boxes used in
the field, such as along paddies, canals or gardens. Only a small number of households kept bottles for
selling. However, the pesticide bottles and boxes are gathered in unsafe manner in field or around
house. Some bottles are unsafely burned in the field or garden. Most farmers wash pesticide sprayers
in the interior field canal or in the ditches or ponds of the field. Wastewater from washing spraying
tools is poured into the field or into the canal. It can be seen that this habit has put pesticide residue in
water of the canal which is the reason of polluting surface water. Regarding the residual pesticide
mixture, after spraying, the residual mixture is treated by spraying it back to the paddy field or near the
edge of the field or where there is a high level of pest damage. A few people poured residual mixture
directly into the canal. Inadequate treatment of this residual mixture of pesticide will cause the
increase of residual mixture of pesticide in the surface water, leading to impact on aquatic organisms
and on the food chain that affects the farmers themselves.
5.3. Analysis of types of impact
5.3.1. Cumulative impacts
369. The subproject consists of many dams, however the dams are scattered in the territory of the
province. Moreover, the size and nature of subproject activities are small and simple, so that the
implementation of subproject activities is not likely to cause cumulative effects. According to the
survey and exchange with relevant agencies, currently in the area of implementation of construction
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Report on Environemental and Social Impact Assessment (ESIA) 139
items of WB8 sub-project in Phu Yen, at present, there is no other project implemented in the same
area and at the same time, so that cumulative impacts created by other projects are not available.
5.3.2. Direct Impact
370. Implementation of the subproject will cause direct impacts on the environmental and social
conditions in the subproject area. Subproject activities will result in temporary or permanent land loss.
Construction activities will cause direct impact on the quality of the surrounding environment of air,
soil and water due to the generation of waste such as gas and wastewater and the removal of
vegetation.
5.3.3. Indirect impact
371. The temporary and permanent loss of land will cause impacts on the livelihood of affected
persons, reducing or losing of income, leading to change of occupation and social conflicts. Indirect
impacts are also identified through the risk of deterioration of water quality due to soil erosion caused
by vegetation clearing from the construction process. Water pollution due to waste generated from the
construction process can lead to a decline in the composition and number of individuals of aquatic
species. Or soil compaction due to the use of heavy equipment on farmland can lead to a decline in the
number of useful microorganisms in soil due to changes in soil structure. Loss of vegetation will also
lead to loss of habitat for many animal species in the subproject area and increase risk of erosion, and
flooding.
5.3.4. Temporary impact
372. In general, most of the impacts associated with construction activities within the subproject
area are in short-term such as noise, vibration, dust and emissions, and the generation of solid waste
and wastewater. These impacts will no longer exist when construction activities are complet.
5.3.5. Long term impact
349. The permanent loss of productive land will cause long-term impact on the affected persons as
some households are perceived as losing of productive material which leads to change of their
occupation. Environmental incidents such as oil spilling or hazardous chemicals also cause long term
impacts on environment and health status of people because the chemical substance has a long time of
decay and has possibility to penetrate into environment of soil, water and food chain. The risk of labor
accidents also causes long term impacts because the health of labor will be affected or lost.
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CHAPTER VI: ALTERNATIVE ANALYSIS
373. With the aim of improving investment efficiency and ensuring safety and minimizing impacts
on the environment and society in downstream areas of the reservoir; scenarios are proposed to select
the design and construction options that are appropriate to the objectives and actual socio-economic
conditions of the 8 reservoirs. Construction activities are mainly reinforcement and repair on the
existing works. Because the design option, selection of technical solutions, technology in the
construction of the work items of the subproject has no difference in the impact on the environment
and society in the subproject area so that the contents of alternative analysis specify the difference
related to environment and society in the scenarios of implementing or not implementing the project.
6.1. Without subproject
374. The works have been constructed and exploited for a long time and seriously downgraded:
375. Dam surface, upstream and downstream slope: Currently the dam face at the reservoirs: Phu
Xuan; Dong Khon; Hon Dinh; Gieng Tien; Hoa Thuan are the homogeneous earth dams and dam crests
have been not reinforced. In the rainy season, it is difficult to monitor and operate the works. Some
wave-breakwalls were broken and sloughing. Most upstream slopes are paved with stone, has been
peeled and landslide upstream slope. The downstream slope of many locations is landslide, trees grow
on the dam slope, there is no drainage system in downstream of dam. Especially in all dams are
absorbent through the foundation and dam body with a large flow; wall of upper and downstream dam
slope subsided, there are cracks across the dam, there is no protection layer for face dam and downstream
slope;
- Assessment: Without the subproject, the status above will continue to occur and the status of
the dam will become more and more serious due to landslides. On the other hand, it can cause
large water loss in the reservoir affecting water supply in downstream.
376. Spillway: 3 reservoirs Dong Tron; Phu Xuan; Gieng Tien, status spillway: After many years
exploiting, most of the spillways have been downgraded, mortar is doted and peeled, seepages is along
the body of spillway, the soil on both sides of the talus is landslide into the spillway. Some reservoirs
have energy dissipitator tanks but are badly damaged, the remaining reservoirs do not have energy
consumption tanks. The spillway have also been degraded, causing dam safety.
- Assessment: If the subproject is not implemented, the current capacity of the spillways will not
be sufficient to meet the drainage requirement if heavy rain and storms occur and a large
amount of water will be gathered into reservoir which will cause the status of dam breaking
and landslides. Especially, spillways with seriously damaged energy dissipitator tanks, it can
cause serious flash floods and affect the life as well as the property of people in downstream
area.
377. Intake: In all 8 reservoirs of the subproject, the intake culvert has been badly damaged at the
entrance and exit, the culvert body is damaged, broken, there is water leakage along the culvert body
toward downstream, cannot use the level water as required.
378. Monitoring system: At present, all of the 8 reservoirs of the sub-project have no monitoring
system so they cannot promote disaster warning efficiency.
379. Management road: Currently of 6/8 reservoirs Management road is either soil roads or
macadam roads which are small and narrow (except 2 reservoirs of Dong Tron and Ea Din1 have
concreted management roads). On the rainy days, it is very difficult to travel and it cannot ensure
traffic condition and management of dam.
380. Management house: Currently 3 reservoirs Hon Dinh, Hoc Ram, Dong Khon have no
managers house. This is inconvenient for the operation and response to dam safety incidents. In case
of occurring dam safety incident, it causes risk to people and their asset in downstream area. On the
other hand, if the routine monitoring and maintenance are not implemented, it will cause damage. The
remaining reservoirs were constructed management house. However, the management house of the
reservoirs have been downgraded and need to be upgraded and repaired.
General assessment:
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- The current status of the reservoirs causes constraints on the development plan and
improvement of productivity and economic efficiency in agricultural production; does not
ensure proactive irrigation water; affect the selection of plants and livestock; cannot exploit all
economic value from natural land source.
- When the subprojects are not deployed, the ecosystem of the area around the reservoirs will
stably remain. However, due to the current status of the degraded reservoirs, it causes the
potentiality of breaking dams causing damage to people and structure and breaking ecosystem,
especially in downstream area of reservoirs.
- In recent years, due to the climate change status, floods appear more with heavy rain and
intense intensity which causes high risk of safety due to small reservoir bed. A synchronous
construction solution such as the investment in construction, repair and upgrading of
reservoirs is imperative to ensure the safety of life and property of people in the downstream
area and to serve the requirements of economic development of the locality.
6.2. With sub-project
a. The plan is selected when implementing the subproject:
Soil dam:
- Completing the section in accordance with current technical regulations and standards and
ensuring specific and stable conditions of works:
+ Maintain the status quo of 03/08 reservoirs (Dong Tron, Phu Xuan, Hoa Thuan).
+ Increase the elevation of dam crest, downstream embankment of 01/08 reservoir
(Hoc Ram).
+ Increase the elevation of dam crest, Embankment creating inclined walls
combined with Seepage treatment trays at upstream of 02/08 reservoir (Hon Dinh
and Dong Khon).
- Dam face structure: Reinforcing the dam surface 06/08 reservoir with M200 concrete:
+ Reinforcing dam surface with concrete M200, arranging upstream breakwaters
and wheel guard edges downstream with 05/08 lakes (Hoc Ram, EaDin1, Dong
Khon, Hon Dinh, Gieng Tien).
- Upstream slope:
+ To maintain the status quo of 2/8 reservoirs (Phu Xuan and Dong Tron).
+ Reinforcing roof protection with concrete sheet (5x5) m 12cm thick drainage
holes and filter layers + geotextile fabric 06/08 reservoir (Hoc Ram, EaDin1,
Dong Khon, Hon Dinh, Gieng Tien, Hoa Thuan).
- Downstream slope:
+ Making drainage ditches and planting grass to protect the remaining 8/8
downstream slope, draining downstream by rock piles combined with roof
pressure or by attic; attic structure with anhydrous paving stones on the reverse
filter of macadam and filter sand.
Spillway:
- Maintain flood discharge spill 06/08 reservoirs (Dong Tron, Phu Xuan, Hoc Ram, Dong Khon,
EaDin1 and Hoa Thuan).
- Maintain main spillway, repair and upgrade some parts of 2/8 reservoirs (Hon Dinh, Hoa
Thuan):
+ Expanding spillway, constructing new battery posts and adding steel gate 3 (bxh)
= 3 (1,5x1,5) m 01/08 reservoir (Hon Dinh).
- Constructing new spillway with reinforced concrete M250 of 3/8 reservoirs (Dong Tron, Phu
Xuan and Gieng Tien)
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Report on Environemental and Social Impact Assessment (ESIA) 142
Intake:
- Maintain the status quo of water intake for 3/8 reservoirs (Dong Tron, Phu Xuan and EaDin
1).
- Extending the doors, constructing new vaults for valve covers, replacing valves, operating and
repairing valves for 2/8 reservoirs (Hoc Ram, Dong Khon).
- Newly constructing f60cm sewer with steel pipe coated with reinforced concrete M300 of 2/8
reservoirs (Gieng Tien, Hon Dinh).
- Newly constructing f30cm sewer with steel pipe coated with reinforced concrete M300 of 1/8
reservoirs (Hoa Thuan).
Management road:
- Maintain the current management road of 02/08 reservoirs (Dong Tron and EaDin 1).
- Upgrading the management roads of the remaining 06/08 reservoirs: 4m platform width, 3.0m
face width and (2x0.5) m; pavement structure BT M250.
House under management:
- Building new House under management of 01/08 reservoirs (Hon Dinh ).
- Combining the construction of sewer operating space to do House under management of the
02/08 hồ (Hoc Ram, Dong Khon )../.
Land mine location: Buy soil of the mines has been licensed to exploit in Phu Yen province
Landfill location: Written agreement with communes on location of landfill
Location of worker camps, material yards: Downstream of the dam and its crest are located within
the dam safety corridor.
Labor flow: The technical works, The contractor's workers should be brought there, However, there
are still 40-50% of local skilled workers and especially women are still employed by the contractor for
the subproject.
Construction machinery: Maximum mobilization for each works and machines must be tested.
b. Analysis of selected options
- Options and technical solutions for the main dam and spillway: Completely reasonable for
the situation and the status of the degraded and waterproofed works. On the other hand, before
constructing the works, the option of treatment of termite for dam body was not selected.
However, when the design unit discovered that there were termites in the dam body, the
termite treatment plan was selected to ensure dam safety after completing. Regarding
spillway, the first option which was not chosen, is to keep the current status of the spillways
and reinforce the repair of existing damaged items. However, this option causes the risk of
dam safety. When there is heavy rain or flood discharge, the large amount of water plus the
small spillway width will create great pressure and endanger the downstream area. The second
option, which was chosen, is expansion of spillway, construction in accordance with the form
of the Labyrinth and Piano to reduce the water pressure and have stilling basin to ensure that
flood discharge does not affect the downstream area.
- Options of construction of intake: The technical design has been designed to ensure the
safety of the dam. However, during the construction of intake and some types of dams, it is
required to cut off water for construction. There are two options as below, where in the option
2 has been selected.
• Option 1: Discharge all water in the reservoir to ensure comprehensive and rapid
construction and save the cost. However, this option will cause significant negative
impact that it is required to discharge a large amount of water in the reservoirs which
will cause flooding and damage to crops in the downstream area. On the other hand,
the large amount of water will cause stagnation and pollution of air environment.
Aquatic animals and aquatic animals will die and drainage of water will cause the lack
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 143
of water for agriculture production of the people. Therefore, this option is not
selected.
• Option 2: Construction diversion. Depending on each construction item, the water in
the reservoir will be drained slowly that allows construction of cofferdam to prevent
water for the construction activities. In addition, it still leaves the minimum flow to
serve agricultural production of people. This option ensures that downstream safety is
not affected by immediate flooding and does not pollute the aquatic animals and
plants. Besides, in the crop season of people, there is still water being available for
agriculture and in case of lack of water, people still use water from nearby pond,
reservoirs and stream. This option requires a large amount of embankment soil and
machines. However, the amount of excavated soil is large that can be used for
embankment of cofferdam. Therefore, the option 2 is selected.
- Option of construction road combining with management road: Roads for transportation
of materials: Currently, most of the management routes to the reservoirs are mostly
homogeneous roads and there is only one route to the reservoir, so there is no alternative
option for management road. The upgrading to ensure traveling and operational management
is appropriate. Roads for transporting materials: The selected option is to transport materials
through roads where there are few vehicles traveling and with sufficient loading capacity.
Especially, the transport routes should avoid sensitive areas such as schools, medical station
and cultural center. Therefore, roads for transporting materials from districts’ center have been
selected according to the criteria for avoiding sensitive works as above.
- Location of the borrow pit: There are two options
• Option 1: Coordinate with CPC to identify soil mines in the commune area and ensure
the quality of embankment. However, this option was not selected because: When
conducting soil mining, it is required to get permission from the Provincial People's
Committee and to prepare a separate EIA report for the location of the soil mine. On
the other hand, it is necessary to have the basic measures and environmental
monitoring for soil mines and must be reverted after use. This option is costly and
time consuming.
• Option 2: The plan is selected: Buy soil from regional licensed mines, around the
subproject, there are soil mines to ensure reserves serving the subproject licensed to
operate and there are separate management units and legal responsibility. Therefore
option 2 is convenient and cost-effective for the subproject.
- Location of dumping sites: When conducting survey of the project, the consultant unit
coordinated with the People's Committees of the subproject communes to find, identify and
make minutes of the location of disposal site. The disposal site is required to meet the
following criteria: being far from residential areas, far from water sources, and minimizing the
management of households and avoiding the types of forest land, agricultural land and
residential land. The location of the disposal site must be convenient for waste treatment to
avoid causing environmental pollution. Another option is also selected that the need of people
to use waste soil to level their site is large, so people will ask for waste rock and soil to level
their site. However, this plan needs the consent of the investor and CPC.
- Location of worker camp and material gathering sites: There are two options being
proposed, including: the borrowing of land from the CPC or from the households. This plan is
not feasible because it can lead to disturbance of security and conflict; being far from the
subproject implementation site; restore the borrowed land area. Option 2 is the chosen option:
most of the downstream area and the crest of the dam are under large safety corridors which
are close to the construction site, away from the residential area, do not pollute the
environment and being favorable for transportation of materials. However, it is necessary to
ensure safety due to natural disasters and safety incidents...
- Labor force: The plan of bringing skilled workers from other localities has been taken into
consideration. However, in localities, the labor force is very large, and there are still skilled
laborers who are suitable for the work. On the other hand, local labors can go home for eating
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 144
that they can save money and minimize waste to the environment, and minimize local security
conflicts.
381. Construction machine: All types of machine that contractor brings to the site are inspected
and controlled for safety. Works are relatively far from each other, thus it needs to be minimized the
movement of machines from one place to another and not wasted time as well as labor force of the
project. The other proposed option is to rent some local machines to save money and human resource.
However, it is important to ensure that machines will be inspected and contracted between the
contractor and the lessor.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 145
CHAPTER VII: ENVIRONMENTAL AND SOCIAL MANAGEMENT PLAN (ESMP)
7.1. Objectives
382. The ESMP of the subproject is designed for specific purposes as follows:
- Ensure the compliance with the World Bank’s regulations as well as Vietnam’s legal system,
standards and guidelines applied at the provincial and national levels.
- Ensure that sufficient resources are allocated based on the subproject budget to carry out the
activities related to the ESMP.
- Ensure that the environmental and social risks of the Subproject are adequately predicted and
managed.
- Ensure specific and feasible response plan with unforeseen environmental issues in the
subproject's environmental impact assessment.
- Create an effective feedback mechanism for further improving environmental protection
results.
- The Environmental and Social Management Plan (ESMP) outlines mitigation, monitoring and
institutional measures that will be implemented during the development and operation of the
Subproject to avoid or control adverse impacts on the environment, society and outlines the
actions required to implement mitigation measures. The ESMP creates a useful link between
adverse impact and mitigation measures and ensures that such measures are implemented.
- The ESMP imposes responsibilities for the implementation, monitoring, time and cost for the
proposed mitigation measures. The summary of the Subproject’s environmental and social
management plans is presented in the following sections.
7.2. Mitigation measures
7.2.1. Impact mitigation measures in the subproject preparation measures
7.2.1.1. Mitigation measures due to land acquisition and site clearance
383. An ethnic minority resettlement and development plan has been prepared and implemented for
the subproject.
General principles:
384. All households affected by the subproject have assets or reside within the subproject area
Before the end of the tally compensation will be paid. People who lose income and / or livelihood will
be assisted in restoring their livelihoods based on eligibility criteria defined by the subproject with
consultation with AHs. If by the end of the subproject, livelihoods have been proven not to be restored
to the extent that before the subproject, there will be additional support measures.
Rights:
385. Affected households will be entitled to compensation, support and resettlement policies (if
any) in accordance with the regulations of Vietnam and the World Bank under OP 4.12. AHs will not
be considered for compensation or support from the subproject for the area to be recalled after the
announcement date of the counting of tally.
Impact mitigation solutions
386. At the request of the World Bank, the Plan of Land Clearance has been prepared for CSC
subproject. Accordingly, compensation will be made to affected households and organizations due to
land acquisition, and other types of assets on the land. In addition, assistance is also provided to
minimize the impact on livelihoods, source of income and life of the affected people. Ensure that AHs
have life at least equal to the living conditions before the implementation of the works under the
subproject.
387. All costs for land acquisition and clearance activities include: i) compensation for land; ii)
compensation for crops and trees on land; iii) compensation for construction and structures on the
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 146
land; iv) costs to support AHs. These costs are in line with the policies of the Government of Vietnam
and the World Bank (see details in the subproject's Clearance Plan)
Table 88: Cost estimate for compensation and resettlement
No Items Number of
household Quantity Unit
Unit cost
(d/m2) Total (d)
A Dong Tron reservoir 463,635,800
I Compensation cost for lands 221,786,400
1.1 Forest production land 5 17,144.6 m2 12,000 205,735,200
1.2 Unused hill land 1 1,337.6 m2 12,000 16,051,200
II Compensation cost for trees 21,905,000
2.1 Eucalyptus (3-5cm) 5 3,370 tree 6,500 21,905,000
III Assistance 219,944,400
3.1 Assistance for forest production
land 6 18,482.2 m2 6,000 110,893,200
3.2 Assistance for public land 1 15,146 m2 7,200 109,051,200
B Phu Xuan reservoir 107,328,760
I Compensation cost for lands 10,536,625
1.1 Rice land 1 209.4 m2 16,500 3,455,100
1.2 Annual crop land 2 412.9 m2 12,100 4,996,090
1.3 Perennial crop land 1 172.35 m2 12,100 2,085,435
II Compensation cost for trees 3,671,965
2.1 Rice 1 209.4 m2 3,500 732,900
2.2 Sugarcane 1HH + 1
CPC 776.59 m2 3,500 2,718,065
2.3 Eucalyptus (3-5cm) 1 34 tree 6,500 221,000
III Assistances 93,120,170
3.1 Assistance for rice land 1 209.4 m2 66,000 13,820,400
3.2 Assistance for annual crop land 2 412.9 m2 24,200 9,992,180
3.3 Assistance for public land 1 9,547 m2 7,260 69,307,590
C Hoc Ram reservoir 12,887,180
I Compensation cost for lands 7,677,120
1.1 Forest production land 1 639.76 m2 12,000 7,677,120
II Compensation cost for trees 1,371,500
2.1 Acacia 1 88 tree 6,500 572,000
2.2 Eucalyptus (3-5cm) 1 123 tree 6,500 799,500
III Assistance 3,838,560
3.1 Assistance for forest production
land 1 639.76 m2 6,000
3,838,560
D Gieng Tien Reservoir 88,430,725
I Compensation cost for lands 22,184,170
1.1 Rural residential land 2 36.17 m2 55,000 1,989,350
1.2 Rice land 4 561.89 m2 14,000 7,866,460
1.3 Annual crop land 3 1,120.76 m2 11,000 12,328,360
II Compensation cost for trees 5,855,115
2.1 Rice 4 561.89 m2 3,500 1,966,615
2.2 Sugarcane 2 1,111 m2 3,500 3,888,500
III Assistance 60,391,440
3.1 Assistance for rice land 4 562 m2 56,000 31,465,840
3.2 Assistance for annual crop land 3 1,121 m2 22,000 24,656,720
3.3 Assistance for public land 1 647 m2 6,600 4,268,880
E Hon Dinh and Dong Khon
Reservoirs
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 147
No Items Number of
household Quantity Unit
Unit cost
(d/m2) Total (d)
1 Assistance for public land 1 1,000 m2 20,400 20,400,000
F Ea Din1 Reservoir
1 Assistance for public land 1 1,300 m2 6,600 8,580,000
E Total of compensation cost 701,262,465
1 Administration cost (2%) 14,025,249.30
F Contingency 70,126,247
TOTAL 785,413,961
USD 34,275.1
Source: RAP Report
7.2.1.2. Prevention and minimizing the impact on site preparation works
388. In the preparation phase of the subproject, activities are implemented including clearing
vegetation, clearing the construction site, constructing roads, constructing camps and auxiliary items. ,
construction of houses for construction and sub-project workers, etc. Based on the contents presented
in Chapter V of the report on assessment of environmental and social impacts in this period, the
Preventive measures and minimize the impact included:
- For domestic wastes: The minimum number of workers is 5 people, they may come from this area
which do not cause additional domestic wastes.
- For the removed plants: In order to limit the impacts caused by the existence of plant biomass on
the site, the project should take measures to collect and treat the whole plant biomass immediately
on the construction site. The treatment method includes burning on the spot with the small
quantity, or contracting for transportation and treatment with the unit at the commune level.
- For the amount of waste soil, Landfills, construction road, the investor needs to have agreements
and permission from the local authorities before construction activities start on construction sites.
- For the amount of organic topsoil due preparation activities landfills, the topsoil is rich in organic
at the landfill site, the contractor will retain and shield full, prevent overflowing to revert the
landfill locations after exploitation and use to plant trees in such areas.
7.2.1.3 Landmine clearance and management of geological exploration boreholes
389. Landmine clearance: will be implemented before land acquisition. This work will be done by
specialized demolition units of the Army in the province. Project owners and specialized clearance
units will have to notify local people at least one month before site clearance and must use protective
fences and warning signs to reduce risks for people and pets. The demining unit and the investor will
appoint an officer responsible for instructing the people not to enter the clearance area. Landmine
clearance is conducted in accordance with Circular 146/2007 / TT-MOD of the Ministry of Defense
and Ensuring a safe distance and alerting people in the process of complying with QCV 01: 2012 /
BQP-Technical Regulation Technique on clearance of bombs and explosive objects and QCVN 02:
2008 / BCT-National technical regulation on safety in transport, storage, use and destruction of
industrial explosives.
390. Management of geological exploration boreholes: After geological exploration drilling,
Surveying design unit will backfill borehole and revert to the status quo in the areas where the drilling
is carried out to minimize the impact of washing out pollutants along the borehole can affect
groundwater quality.
7.2.2. Mitigation measures during construction phase
❖ Mitigation measures for general impacts
391. Mitigation measures are developed based on the environmental, health and safety guidelines
of the World Bank group and national regulations and standards to minimize common construction
impacts, and presented in the form of practical environmental rules. Practical environmental rules that
describe specific requirements are implemented by the contractor and monitored by the construction
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 148
supervision consultant during construction. Practical environmental rules addressing the problems are
presented in the table below.
❖ Major environmental and social impacts during subproject construction
392. The content of ECOPs is limited to construction activity for small-and medium-sized
construction impacts, limited scope, temporary effects and can be overcome, technically easy to
manage with good construction techniques. The environmental and social issues within the scope of
this study include:
- Dust and exhaust emissions
- Noise and vibration effects
- Waste management
- Management of hazardous materials
- Management of worker camps
- Disruption of vegetation cover and ecological resources
- Soil erosion
- Drainage and sediment control
- Stockpile and borrow pits management
- Traffic safety management
- Disruptions to existing service infrastructure
- Chance finds
- Occupational Health and safety
- Community Health and Safety
- Communication with local communities
- Management of labor influx
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 149
❖ Environmental code of practices to mitigate general impacts during the construction process
Table 89: Environmental code of practices (ECOP) to mitigate general impacts during the construction process
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
1) Dust and exhaust - The contractor is responsible for complying with the relevant
requirements of Vietnam's regulations on ambient air quality.
- Contractor will ensure that dust emissions will be minimized
and will not disturb the local population, while implementing
dust control measures to maintain a healthy work environment
and minimize disturbance in the surrounding area.
- The contractor is responsible for implementing dust mitigation
measures (for example, use of irrigation water for irrigation,
covering of material vehicles, etc.).
- Construction materials such as cement, sand and gravel must
be properly covered and secured during transportation to
prevent the spread of soil, sand, other materials or dust.
- Waste excavated soil and material store must be protected
against the effects of wind and the location of the material
store should be checked for the popular wind direction and
location of the sensitive sources.
- Use a dust mask when dust is too high.
- All means of transport and construction must be complied
with the Vietnamese regulations for the control of emission
limits for emissions.
- All vehicles must undergo a regular emission test and receive:
"certificate of quality, technical safety and environmental
protection" under Decision No. 35/2005 / QD. -BGTVT;
- Ensure that no solid waste or construction materials (eg wood,
rubber, oil-soaked, cement, paper, plastic, bitumen, etc.)
areburned.
TCVN 6438-2005:
Road vehicles.
Maximum allowable
emission limit.
No. 35/2005 /
QDBGTVT on quality
control, technical safety
and environmental
protection;
QCVN 05: 2013 /
BTNMT: National
technical regulation on
air quality
WBG EHS Guidelines
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
2) Noise and vibration - The contractor is responsible for compliance with the provisions of
Vietnamese law relating to noise and vibration issues.
- All vehicles must have "Certificate of quality control, technical
safety and environmental protection" under Decision No. 35/2005
- QCVN 26: 2010 /
BTNMT: National
Technical Regulation
on noise
Contractor PMU,
Construction
Supervision
Consultant
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 150
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
/ QD-BGTVT; Prevention of excessive noise emission from
machines that are less maintained.
- The following measures should be taken to reduce noise:
+ Select low noise equipment
+ Install noise reduction equipment for fan
+ Installed room for covering part of equipment causing noise
+ Install adjacent sound barrier and minimum surface density of
10kg/m2 to minimize sound transmission
+ Sound barriers need to be placed near the sound source or the
sound transmission source to be effective
+ Installation of vibration control for mechanical machines
+ Limits of operation time for certain devices or activities,
especially mobile sources in residential areas.
+ Transfer noise sources to other areas to take advantage of
distance and barriers
+ Install fixed equipment away from residential areas as
possible
+ Take advantage of the natural terrain in the design process to
prevent noise
+ To limit the use of means of transport serving the project
through residential area
+ Establish mechanisms for receiving and feedback
- QCVN 27: 2010 /
BTNMT: Technical
regulation on
vibration
- WBG EHS
Guidelines
(CSC);
community
supervision
board
Waste management I. Normal waste
(a) Wastewater
- The contractor is responsible for compliance with Vietnamese
regulations relating to the discharge of wastewater into the
surrounding environment.
- Consider recruiting local workers to reduce wastewater discharge.
- Wastewater treatment systems must be provided for treatment and
disposal of wastewater in areas where wastewater collection
system is not available. Wastewater treatment systems should be
only used for the treatment of sanitary wastewater. When the
- QCVN 14: 2008 /
BTNMT: National
technical regulation
on domestic water
- QCVN 40: 2011 /
BTNMT: National
Technical Regulation
on Industrial waste
water
- Decision No: 59/2007
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 151
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
wastewater treatment system is the selected treatment method, it is
necessary to:
• Design and installation in accordance with local regulations and
guidelines to prevent any risk to public health or the contamination
of soil, water or groundwater.
• Well maintain to effectively operate.
• Install in areas with sufficient permeable soil for the proportion
of the design wastewater.
• Installed in stable area which is well drained and permeable with
separation between drainage ditch and underground water or other
receiving waters.
- Wastewater from washing machines and construction equipment
must be collected into the pond before being discharged into the
local sewerage system.
- When construction works are completed, the waste water tanks
and septic tanks must be safely treated or sealed up.
(b) Rainwater
- Rainwater should be separated from treatment process and sanitary
wastewater to reduce the amount of wastewater to be treated
before discharge.
- Prevent surface runoff from areas or potential sources of pollution.
- In case this approach is impractical, the amount of wastewater
from treatment and storage area must be separated from
contaminated water
- Minimize flow from areas where there are no potential sources of
pollution (by minimizing the surface area of the impervious area)
and reduce the maximum discharge proportion (use of ponds and
lake).
- In case rainwater treatment is required to protect the receiving
water quality, priority should be given to managing and treating
the first discharge of rainwater, where the majority of potential
pollutants tend to occur.
- When it is allowed by the water quality criteria, rainwater must be
/ ND-CP on solid
waste management;
- Decree No. 38/2015 /
ND-CP on material
and waste
management
- Circular 36/2015 /
TT-BTNMT on
Hazardous Waste
Management
- WBG EHS
Guidelines
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 152
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
managed as a resource, either for groundwater recharge or for
meeting the water needs of the locality.
- Installation and maintenance of oil water separators and lubricant
traps shall be carried out at refueling facilities, factories, parking
areas, fuel storage areas.
- Mud from rainwater tanks or collection and treatment systems may
contain high concentrations of pollutants and must be treated in
accordance with local requirements, and to be suitable for
protection of public health, safety, preservation and long-term
sustainability of water and land resources.
(c) Solid waste
- Prior to construction, the Contractor shall prepare solid waste
control procedures (storage, supply, cleaning schedule, cleaning
schedule, etc.) and must carefully pay attention during the
construction process
- Prior to construction, a permit certificate is required.
- Measures should be taken to minimize the potentiality of arising
waste and negligent action on the disposal of all waste. In all
workplaces, the Contractor shall provide garbage bins, containers
and garbage collection facilities.
- Solid wastes are temporarily stored at the site in the designated
area that has been approved by the Construction Supervision
Consultant and the local authorities before collecting and disposal
to the licensed collection house.
- Waste packaging must be protected against corrosion
- Do not fire, burry or dump solid waste.
- Recycled materials such as wooden slabs, steel, scaffolding
materials, packaging materials will be collected and separated
from other sources for reuse.
- If not dismantled outside the site, solid waste or construction
debris will only be treated in areas identified and approved by the
Construction Supervisor and included in the Solid Waste
Management Plan. In any case, the contractor will not treat any
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 153
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
material in environmentally sensitive areas, such as in areas of
natural habitat or in water bodies.
II. Hazardous waste
(a) Storage of hazardous waste
Hazardous waste must be stored to prevent or control accidental
release into the air, soil, and water sources in the area where:
- Wastes are stored in a way that prevents any disturbance or contact
between incompatible wastes and it is allowed to check leaks or spills.
Examples, it includes spaces between compatible spaces or physical
isolation such as walls or barriers.
- Store in a tightly closed container to avoid direct sunlight, wind and
rain.
- Storage should be on a waterproof surface that is easily cleaned, and
properly packaged to contain any spill or leakage. The storage area
should be covered to prevent rainwater from accumulating.
- Secondary prevention systems must be constructed with appropriate
materials for the storage of waste and being sufficient to prevent
leakage into the environment.
- Secondary storage includes wherever liquid waste is stored in
volumes greater than 220 liters. The available volume of secondary
containment must be at least 110 percent of the largest storage, or 25
percent of total storage capacity (whichever is greater) at that
particular location.
- Provide adequate ventilation of volatile storage.
(b) Transportation of hazardous waste
- Onsite and offsite waste transportation should be carried out to
prevent or minimize spillage, release, and exposure to staff and
community.
- All waste containers designated for off-site transportation must be
protected and labeled with relevant content, properly packed on
the transport vehicle before leaving the site and must be
accompanied by a shipping certificate (eg manifest) describing the
load and associated hazards in accordance with the instructions.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 154
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
(c) Disposal of hazardous wastes
- Chemical wastes in any form must be disposed of at an approved
appropriate dump site and in accordance with the requirements of
local law. The contractor must have the necessary processing
certificate.
- Disposal of hazardous waste must be carried out and handled by
special trained and certified workers.
- Oils, lubricants, detergents from the maintenance of vehicles and
machine must be collected in storage tanks and must be recycled
by the company specializing in waste oil recycling at hazardous
waste disposal sites.
- Unused or rejected bitumen products will be returned to the
supplier's factory.
4) Soil erosion - Limit implementation of construction activities on rainy days
- Use geotextile to temporarily cover erosion-prone soil
- Apply a covering layer on ground to absorb water gradually
- Build the walls around the erosion area to block the flow of water
- Stablizesoil surface being easily eroded by cultivation or
concreting.
WBG EHS Guidelines Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
5) Drainage and
sediment management
- Contractors should comply with the detailed design of the
wastewater system in the construction plan to prevent water spills
or erosion of hillsides and areas not protected from flood, leading
to situation that industrial waste affects local water resources.
- Ensure the sewage system is free from mud and other obstructions.
- Ensure the maintenance of the status of areas that are not under
construction.
- Reasonable work of excavation, backfilling, embankment,
compliance with construction standards, including measures such
as installing of sewage system and planting of trees.
- In order to avoid sedimentation causing negatively effect on water
resources, a sediment management system should be installed to
- TCVN 4447: 1987:
Construction
regulations and
acceptance
- Circular No. 22/2010
/ TT-BXD of the
Ministry of
Construction
regulating labor safety
in construction work
- QCVN 08-MT: 2015 /
BTNMT - national
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 155
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
slow or reverse the discharge of sediment until the cultivation is
carried out. Sediment management systems may include the
removal of waste from canal, canal banks, waste gathering tank,
material, post-storm sewerage protection systems, or barriers.
- Drainage and diversion: In case the construction works need to be
carried out at water sources (bridges, retaining walls, erosion
protection), the area should be drained to ensure dry conditions to
conduct construction. Water after settling from the construction
site must be discharged into the sediment management system to
be treated before flowing into the water source.
- Implementation of mitigation measures for each specific area
under the ESMP should be implemented when changing water
flows or constructing dykes.
technical standards on
surface water quality
6) Management of
hazardous materials
and chemicals
- The use of hazardous materials and chemicals within the subproject
area must strictly comply with the manufacturer's instructions.
- The use of chemicals on the list of authorized agencies
- Persons exposed to hazardous materials and chemicals should be
participated in intensive training in risk prevention measures due to
exposure to hazardous materials and chemicals.
- Persons who are frequently exposed to hazardous materials and
chemicals should be periodically checked health (no less than 6
months) and appropriate rest periods are recommended to them
Transportation of hazardous materials and chemicals
- Use of accessories, pipes and hoses dedicated to the materials in
the tank (for example, all acids use one type of connection, all
caustics use different equipment) and maintain the procedure to
prevent the addition of toxic substances to the inaccurate tank.
- Use of transfer equipment which is compatible and conforms to
the characteristics of the transferred and designed material to
ensure safe transfer.
- Regular inspection, maintenance and repair of accessories, pipes
and tubes.
- Provides secondary prevention or other spill prevention and
- Decree No. 38/2015 /
ND-CP on waste
material and waste
management
- Decision No. 23/2006
/ QD-BTNMT:
Promulgating the list
of hazardous wastes
- Circular No. 36/2015
/ TT-BTNMT on
management of
hazardous wastes
- Circular No. 03/2016
/ TT-BNNPTNT on
the list of pesticides
allowed to be used in
Vietnam
- Circular No. 21/2015
/ TT-BNNPTNT on
management of
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 156
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
containment measures for containers of hazardous materials at
possible connection points or spill points.
Overload control
- Prepare written procedures for transportation activities including a
checklist of measures to be taken during the filling process and use
of trained staffs on the process.
- Install the measuring equipment on the bin to measure the volume
inside.
- Use of water pipe connections for tank trucks and fixed
connections to the tank.
- Provide automatic sealing valves on the tank to avoid overloading.
- Use a water tank around the dumping pipe to collect spill material.
- Use pipe connection with automatic overload protection valve
(float valve).
- Pump less capacity into the tank or vessel by placing less material
than its available capacity.
- In case of overload or over-discharge, it needs to control overload.
Response, fire prevention
- Storage of incompatible materials (acids, bases, flame retardants,
oxidants, chemical reactants) in separate areas, and facilities to
separate the material storage area.
- Provide specific material storage for extremely hazardous or
reactive materials.
- Use flame arresters on vents from flammable containers.
- Provide lightning protection equipment for tanks, transfer stations
and other equipment used to treat flammable materials.
- Select compatible building materials with stored products for all
parts of the storage and distribution system and avoid use of
containers for various products without compatibility testing of
materials.
- Storage of hazardous materials in the isolated area of the main
works. If closeness cannot be avoided, physical separation must be
made using designed structures to prevent fire, explosions, spills,
pesticides
- WBG EHS
Guidelines
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 157
Environmental and
social issues Mitigation measures
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Responsible
Implementation Supervision
and other emergencies that affect the operation of the facility.
- The storage area should be on a waterproof and easily cleaned
surface, reasonably packaged to avoid any spills or leaks. Storage
areas should be covered to prevent accumulated rainwater.
- Prohibit all sources of ignition from areas near flammable tanks.
Secondary chamber (liquid)
- Transfer of hazardous substances from tank to storage in areas
with sufficiently permeable surface to avoid losing of the
environment or storage structure not connected to the wastewater /
rainwater collection system.
- If no permanent prevention structure is provided for transfer
activities, one or more spill prevention forms should be provided
such as mobile covering (which can be deployed during the
implementation process), pressure reducing valves on rainwater
tanks, or closing valves in drainage or sewer equipment, in
conjunction with oil water separators.
- Store hazardous materials in tanks with a capacity equal to or
greater than 1,000 liters in areas with a waterproof surface or
covering with a cover to contain a minimum of 25% of total
storage.
- Provides secondary prevention capability for the components
(tanks, pipes) of hazardous material storage system in feasible
extent.
- Carry out routine tank inspection (daily or weekly), and inspect
visible parts of tank trucks and piping to avoid leakage.
- Use of composite or special storage systems and pipelines,
especially the use of underground tanks (USTs) and underground
pipelines. If using a dual wall system, it should be provided a
means of detecting leakage between the two walls.
Training - Employees need to be trained in hazardous waste
management. Training programs include:
- List of trained staffs
- Specific training objectives.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 158
Environmental and
social issues Mitigation measures
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Responsible
Implementation Supervision
- Mechanisms for achieving goals (practical workshops, videos,
etc.).
- Means determining whether the training program is effective or
not
- Training procedures for new recruited persons and new courses for
existing staffs.
Community Participation and Awareness
- There is general information for the community that is likely to be
affected by the scope and extent of the project activities and on-
site preventive and control measures to ensure that there is no
impact on people’s health.
- Potential effects on human health or the environment caused by
incidents or from existing hazardous wastes.
- Specific and timely information on the behavior and appropriate
safety measures will be adopted in the event of an accident
including practice exercises at high risk locations.
- Access to information needed to understand the nature of the
possible impact of an accident and the opportunity to contribute
effectively to relevant decisions and to develop community
emergency preparedness plans. .
- DoNREs and DOHs will be informed in time of any
environmental incidents.
- Preparation and implementation of remedial measures after an oil
spill incident. In this case, the contractor must provide a report
explaining the reason for the spilling status, corrective actions,
consequence / damage from the spill incident.
Biological effect - The Contractor should establish a Management Plan for Site
Clearance, plantation restoration and rehabilitation in accordance
with the relevant regulations for pre-approval by the Engineer. Site
clearance plan must be approved by Construction Supervision
Consultant and Contractor should strictly comply with this plan.
Limit the number of areas that need to be cleared as low as
possible.
- Law on Biodiversity
No.20/2008 / QH12
- Decree 65/2010 / ND-
CP guiding the Law
on Biodiversity
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 159
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
- The site clearance in mountainous areas requires the permission of
the Ministry of Agriculture and Rural Development.
- Contractors need to clear topsoil layer of all areas where topsoil
layer will be affected by the work of restoration, including
temporary measures such as storage and crowding; the removed
topsoil layer will be gathered in the area agreed with monitoring
consultants to use for replantation of vegetation.
- It is prohibited to use chemicals in the clearing of vegetation
- Do not cut trees unless it is regulated in clearing plan of
vegetation.
- Install a temporary protective fence to protect the trees that need to
be retained if necessary before commencing work at the site.
- No encroachment on ecological resources unless it is allowed by
Construction Supervision Consultant. The consultant should
consult with the PMU, the Independent Environmental Monitoring
Consultant (IEMC) and other relevant and competent authorities.
These areas include areas used for raising birds, animals, or
protected areas used to be green space.
- The contractor should ensure that there will be no activity of
hunting, trapping or poisoning animals.
board
- Traffic management - Contractors must strictly comply with the provisions of the Road
Traffic Law
- Comply with the best traffic safety measures in all aspects of
subproject activities with the aim of preventing traffic accidents and
minimizing injuries that the subproject staffs and community have to
suffer. Measures should include:
• Emphasize safety aspects for the driver.
• Improve driving skills and driving license requirements.
• Approve the limits of travel time and arrange the control panel
to avoid overloading status
• Avoid dangerous roads to reduce the risk of accidents.
• Use the speed control device on the truck, and monitor the
actions of driver from a long distance
- Law on Road Traffic
No. 23/2008 / QH12;
- Decree No. 46/2016 /
ND-CP on
administrative
sanctions in road and
railway traffic
- Construction Law No.
50/2014 / QH13;
- Circular No. 22/2010
/ TT-BXD on labor
safety in construction
of works.
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 160
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
- Regular maintenance of the vehicle and use of parts approved by the
manufacturer to minimize serious accidents that may occur due to
failure of equipment.
- Minimize the interaction of pedestrians with construction vehicles.
- Cooperate with local communities and competent agencies to
improve the sign board, vision and overall safety of roads, especially
along routes near schools or other places where there are children.
Coordinate with local communities on traffic education and safety for
pedestrian (school education campaign).
- Coordinate with emergency response agencies to ensure that
appropriate first aid measures are provided in the event of an accident.
- Use locally sourced materials, whenever possible, to minimize
transportation distance. Locate associated facilities such as labor
camps in the subproject area and arrange transportation of workers by
bus to minimize external traffic.
- Use safe traffic control measures, including signs and flyers to
warn of hazardous conditions.
- WBG EHS
Guidelines
9) Interruption
to the existing
infrastructure
services
- Disruption in providing water, gas, electricity, internet services
with planning and without planning: The contractor must conduct
prior consultation and prepare a contingency plan with the local
authorities about the consequences of discontinuing the service or
disconnection.
- Coordinate with service suppliers to set up a reasonable
construction schedule.
- Provide information to affected households on work schedule as
well as plan to stop providing services (at least 5 days in advance).
- Contractors must ensure that there will be alternative option to
water supply to affected residents in case of disruption more than
one day.
- Any damage to the existing utility system of the cable line will be
reported to the authorities and repaired as soon as possible.
- Decree No.: 167/2013
/ ND-CP stipulating
administrative
sanctions in the field
of security, social
order and safety;
Prevention of social
evils
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
- 10) Management of
workers' camps
- The camps of contractor and workers are built temporarily on the
land of the subproject.
- Labor Law 10/2012 /
QH13
Contractor PMU,
Construction
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 161
Environmental and
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Responsible
Implementation Supervision
- These areas are built to be far enough in comparison with area
used for gathering construction materials, storing waste and waste
oil, discharge canals, sensitive sites such as schools, hospitals,
churches, temples, and other hazardous areas such as landslide or
erosion area.
- The camps should be ensured good conditions such as ventilation,
sunlight, clean water, garbage collection, septic tank, mosquito
net, fire extinguisher, medical first aid kit, and other health
protection facilities for workers.
- WBG EHS
Guidelines
Supervision
Consultant
(CSC);
community
supervision
board
- 11) Management of
social issues related to
labor influx
- Employ local workers for simple jobs, and to limit the increase in
number of workers in the subproject area.
- Local workers should be signed contract and fully applied
insurance with the contractor
- Should explain to the workers about the local customs and
practices to avoid conflict with local people.
- Owner of the subproject and contractors should cooperate with
local agencies to prevent social evils.
- Strengthening of campaigns to eliminate social evils
- Contact local organizations to ensure effective management and
GRM so that affected local people can be trusted.
- Workers temporarily live in camps and rental housing must
register their temporary residence with local authorities.
- Employees are strictly forbidden to:
+ Use alcoholic beverages during construction
+ Arguing and fighting
+ Participating in gambling, social evils such as drug use,
prostitution
+ Indiscriminately throwing of garbage
- Decree No.: 167/2013
/ ND-CP stipulating
administrative
sanctions in the field
of security, social
order and safeguard;
Prevention of social
evils
- WBG EHS
Guidelines
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
- 12) Chance finds If the contractor discovers archaeological sites, historical relics, bones
and display, including cemetery and / or individual graves during
excavation or construction, the contractor shall:
+ Stop building activities in the found area
+ Decline the location or area of discovery;
- Law on amendment
and supplementation
of some articles of the
law on cultural
heritage No.
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 162
Environmental and
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Regulations of
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Responsible
Implementation Supervision
+ Protect the location to prevent any damage or loss of moving
objects. In the case of objects which may be dismantled or
sensitive, it should be arranged a night guard person until the
agency responsible for protecting the local heritage or the
Department of Culture, Sports and Tourism comes to receive;
+ Inform the Construction Supervision Consultant and the
consultant will inform the local or national agency being
responsible for heritage protection (within 24 hours or less);
+ The agency being responsible for protecting the local or
national heritage will be responsible for protecting and
preserving these sites before deciding on the next procedure.
A preliminary assessment report on the detection process is in
place. The significance and importance of the findings are
evaluated in accordance with different criteria related to
cultural heritage, including aesthetic, historical, scientific,
research, social and economic values;
+ Decide on how to deal with the search made by the agency
responsible for protecting the local heritage. This may include
changes in arrangement (for example when finding a relic
which cannot be removed), conservation, preservation,
restoration and recovery;
+ If locations and / or cultural heritage are of high value and the
preservation of the locations is recommended by experts and
required by the agency responsible for the protection of the
local heritage, the Project Owner should change the necessary
design to meet the requirements and preserve these positions;
+ Decisions related to search and management will be notified
in writing to the competent authority
+ Construction works is continued only after obtaining
permission from the agency responsible for protecting the
local heritage.
28/2001/QH10;
- Law on
supplementation and
amendment of
cultural heritages.
32/2009 / QH12;
- Decree No.
98/2010/ND-CP on
supplementation and
amendment
community
supervision
board
- 13) Occupational
health and safety
Over-exertion
- Training for workers on lifting and handling techniques in
- Directive No. 02/2008
/ CT-BXD on
Contractor PMU,
Construction
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 163
Environmental and
social issues Mitigation measures
Regulations of
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Responsible
Implementation Supervision
construction, including setting a weight limit on which mechanical
assistance or a two-person lift is required.
- Prepare implementation plan to minimize the need for manual
transportation of heavy loads.
- Select tools and design working points to reduce power requirements
and retention time, and promote improved posture, including
workstations.
- Implement administrative control on working processes, such as job
rotation and rest or break.
Slips and falls
- Well implement sanitation measures, such as placement and
arrangement of construction materials or debris in areas being
arranged far away from walkways.
- Regular cleaning of waste and liquid waste.
- Locate electrical wires in common areas and marked corridors.
- Use anti-slip shoes.
Work at height
- Training and use of temporary fall prevention devices, such as
rails or other fences that may support a weight of 200 pounds
when working at or above two meters or at any height with the
risks including falling into machines being operated, into water or
other liquids, into the hazardous substance, or the open area on the
work place.
- Training and use of personal protective equipment, such as seat
belts and harnesses which are capable of supporting 2,268 kg (also
described in this above section), rescue procedures for fallen
persons to prevent falling from the height. The connection point of
the anti-falling system can also support 2,268 kg.
- Use control areas and safety monitoring system to warn workers
about locations near dangerous areas, mark and label openings on
the floor, roof or surface.
Struck by objects
- Use restricted or discharge areas and / or gutter to safely move
adjustment and
strengthening of
measures to ensure
labor safety and
hygiene in units under
construction sector
- Circular No. 22/2010
/ TT-BXD dated
03/12/2010 of the
Ministry of
Construction
regulating labor safety
in construction of
works
- QCVN 18: 2014 /
BXD: National
technical regulation
on construction safety
- WBG EHS
Guidelines
Supervision
Consultant
(CSC);
community
supervision
board
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 164
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
waste from top to bottom.
- Saw, cut, grind, split or chisel with appropriate protection and
fasten when applied.
- Maintain specific movement method to avoid heavy equipment
crossing discarded materials.
- Use protective measures when someone or material is dropped by
scaffolding and the edges of work surfaces, such as handrails and
planks, to prevent material from falling down.
- Removal of work areas during blasting and use of explosive carpet
or deflating methods to minimize flying stones if the work is
conducted close to the person or works.
- Wear appropriate personal protective equipment, such as safety
glasses, masks, helmet, and safety shoes.
Moving of machinery
- Planning and segregating of traffic locations, operation of
machines and walking, and controlling of traffic vehicles through
one-way traffic, setting speed limit, and people equipped on site
with jacket to be easy to observe or wears specialized clothing to
regulate traffic.
- Ensure easy observability through the use of identifiable jackets
when working or walking through heavy equipment operating
areas and training for workers to check eye contact with the
operator of the equipment before receiving the vehicle.
- Make sure that the moving equipment is equipped with an alarm
system.
- The use of lifting equipment which is well checked and
maintained in line with the load such as the crane and ensure the
load when lifting them higher than the required height.
Dust
- Implement dust minimization techniques such as using water or
non-toxic chemicals to minimize dirt from vehicle movements.
- Personal protective equipment such as mask will be used where
dust levels are too high.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 165
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
Confined spaces and excavations
- Control of specific factors on the site can contribute to the
instability of the slope of excavation activity such as the use of
water rejecting technique in excavation, side wall plate support,
and adjustment of slope to eliminate or minimize the risk of
collapse, forming traps or drowning.
- Provide safe means to access to and out of excavated areas, such
as grade ramps, stairs and ladders.
- Avoid operating the burning equipment for a long time in
excavation or embankment areas where other workers have to
work unless the area is ventilated.
Other site hazards
- Use trained staff to identify and eliminate wastes from containers,
pots, vats, processing equipment or contaminated soil as the first
step in order to be able to excavate or construct, dismantle or
destroy the safety.
- Use specially trained staff to identify and eliminate potentially
hazardous materials in the construction prior to demolition
including, insulators or structure elements containing amiang,
Polychlorinated Biphenyls, electrical components containing
mercury.
- Use appropriate protective equipment based on health and safety
assessment including respirators, protective clothing, gloves, and
eye protection.
- 14) Community health
and safety
A. General site hazards
- The subproject must implement risk management strategies to
protect the community from physical, chemical, or other hazards
associated with construction sites.
- Limit access to the construction site through a combination of
internal controls and administrative measures. For structures or
areas of high risk, it is depended on the specific situations to
establish fence, sign board, and propaganda of risks to local
communities.
- Road traffic law No.
23/2008 / QH12
- Circular No. 22/2010
/ TT-BXD on labor
safety in construction
- QCVN 18: 2014 /
BXD: Technical
regulations on safety
in construction
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 166
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
- Eliminate hazards on construction sites that cannot be effectively
controlled by restricting access to the site, such as covering open
areas to small spaces which are covered, ensure exists for more
opening areas such as excavation ditch around the hazard
materials.
B. Disease prevention
Communicable disease
- Need to supervise and screen and treatment for workers
- Prevent diseases for workers in the local community by:
• Introduce health and education awareness initiatives, for
example by implementing an information strategy to reinforce
individual awareness in order to address systemic factors that
may affect individual behavior as well as promoting the
protection of individuals and protecting others from infection
by encouraging the use of condoms.
• Train health staffs on treatment.
• Implement vaccination programs for local community workers
to improve health and prevent infection.
• Provide medical services
• Provide treatment through management of typical case at on-
site or community-based health facilities. Ensure access to
appropriate medical treatment, especially for migrant workers.
• Promote cooperation with local authorities to increase access
of families of workers and the community to public health
services and promote vaccination.
Vector-born diseases
- Prevent the spreading of larvae and pathogens through hygienic
measures and removal of habitats and the reproduction of larva in
the residential area
- Remove unused stagnant water.
- Increase flow in natural and artificial canals
- Consider the application of surrounding of pesticide residues areas
- Implement vector control programs.
- WBG EHS
Guidelines
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 167
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
- Promote the use of medicine, clothing, nets, and other preventive
measures to prevent insect bites.
- Preventive treatment with non-immune drugs and in collaboration
with health staff to destroy disease containing areas
- Monitoring and treatment of endemic and migratory populations to
prevent the spread of the disease.
- Cooperate and exchange equipment and machine with other
control programs in the subproject area to maximize benefits.
- Training sub-project staffs and local people on risk, prevention,
and treatment.
- Monitor communities in high risk seasons for the detection and
treatment of cases.
- Distribute appropriate educational materials.
- Comply with the safety instructions for storing, transporting and
using pesticides to minimize the potentiality for abuse and
exposure of people due to accidents.
- 15) Management of
stockpiles and borrow
pits
- Large mines or storage area will need specific measures to be
beyond the scope of mitigation measures in the ECOP.
- All used positions must be determined in advance in the approved
construction engineering requirements.
- An open ditch will be built around the storage area to block
wastewater.
- For a mine that is open for the first time, it is necessary to reserve
the topsoil layer so that it will be re-used to restore the opened
mine to its original natural condition.
- The use of new areas for the storage, gathering or exploitation of
materials required for the construction process must be pre-
approved by the construction engineer.
- When landowners are affected by the use of their land area for
storing and gathering material or material exploitation, these
owners must be included in the resettlement plan of the project.
- If access is required, it must be considered in the environmental
assessment.
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 168
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
16) Communication
with the local
community
- Maintain communication with local authorities and communities;
the contractor should cooperate with local authorities (communal
chairperson and village heads) on the construction plan agreed in
the area near the sensitive area or in the sensitive time such as
religious festival).
- Make a copy in Vietnamese on the ECOP and related
environmental safeguard documents to local agencies and workers.
- Entertainment Park and parking area are affected: The loss of
public infrastructure during construction is an inconvenience to
people in sensitive areas. However, the consultation with the
affected people will create opportunities for research and
implementation of alternative measures.
- Disseminate subproject information to affected parties (eg local
government, enterprises and affected households, etc.) at
community meetings prior to construction.
- Provide contact information of the public relations unit so
interested parties can gather information on site activities, status
and results of the subproject implementation.
- Provide all information, especially technical data, in a way that is
understandable to the public and useful to the interested parties as
well as the authorities through tables, newsletters, when there are
results during the implementation phase.
- Manage the involvement to community and information
requirements for subproject implementation.
- Respond promptly and accurately to requirements by phone and
official letter.
- Inform the local people about construction plans, service
disruptions, bus routes in case of explosion or destruction.
- Limit work in the evening. If needed, it has to ensure that the work
is well prepared and that everyone is adequately informed to take
the necessary measures.
- A notice must be given at least 15 days in advance of interruption
of services (including electricity, water, telephone, bus, etc.) to the
- Decree No. 167/2013 /
ND-CP on
sanctioning
administrative
violations in the field
of security, social
order and safety
Contractor PMU,
Construction
Supervision
Consultant
(CSC);
community
supervision
board
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 169
Environmental and
social issues Mitigation measures
Regulations of
Vietnam
Responsible
Implementation Supervision
public by posting a notice at the sub-project site, bus and at
affected businesses / households.
- Provide documentation and technical drawings to local authorities
and residents, particularly the construction site and the ESMP of
the work site.
- Bulletin boards should be located at all construction sites to
provide project information as well as contact information of the
project management, environmental staff, safety and health staff,
telephone numbers and Other contact information so that affected
individuals can present their concerns as well as make
recommendations.
❖ Measures to mitigate impacts due to drilling and Seepage treatment of the dam body
- Absolutely comply with the drilling process, ensure that the measures are implemented properly and avoid causing spillage into the environment such as: Ensure
the right position for drilling; make sure to use the right amount of clay powder calculated and mix the right dose, technique and bio-termite solution. Comply
with the prescribed time for drilling.
- Complying with Decision No. 64/2003 / QD-BNN of the Ministry of Agriculture and Rural Development on June 2, 2003 promulgating the norms for
production of clay powder for use in body quality grouting. dike and Decision No. 3430 / QD-BNN-QLĐĐ dated December 1, 2009 on the announcement of the
norms of estimation of grouting drill to reinforce the quality of dike body.
- Preparation of grout shall be done carefully in a dedicated area on the site so as to avoid causing environmental pollution.
- All equipment and tools to be used for the grouting works shall be properly managed and cleaned up so as to avoid the penetration of grout into the
soil, surface water and groundwater.
- Ensure no additives, toxic chemicals are mixed in the drilling compound.
- Ensure that boreholes are treated to ensure that they do not seep if rain occurs after drilling.
- Temporary settling ponds shall be constructed on the site to collect grout in case it escapes from seepage treatment, and then the grout from the
settling ponds shall be treated in accordance with the current GoV’s regulation on waste treatment.
- Ensuring the process: responding and handling when an incident of spillage due to drilling
❖ Impact mitigation measures due to water cutting for construction of work items
393. During the construction of works such as: construction of intake, dam and spillway, the drainage of water in the reservoirs for construction is necessary.
Depending on the volume of construction items, the drainage duration is from 1-3 months. And the duration for re-storing water is about one month. Therefore, in
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 170
the process of implementing the subproject, the discontinuity of irrigation water for agriculture and forestry is inevitable; however, impacts from the water cutting
for construction of items can be controlled through mitigation measures and the contractor is the unit implementing these measures under the supervision of the
PMU, the construction supervision and local community monitoring committees. Specific mitigation measures are as follows:
- Inform about the construction schedule for locality and people before six months to have plan of using and supplying water for local people and localities.
- Using the method of embankment of retaining dike and diversion for construction of dams and intake. This is the best mitigation measure due to water cutting.
This measure will drain water level in reservoirs to dead water level and embank dikes in the construction area, then it stills conducts diversion of flow in the
reservoir to serve people and local agricultural production.
- It is necessary to pay attention to crop time and time of irrigation demand to determine the reasonable time of construction. It is therefore necessary to refer to
the local authority and reservoir management unit prior to the construction of the subproject.
- In addition, the use of water sources from streams and other water bodies in the area and water from reservoirs is also a means to be used.
❖ Impact mitigation measures due to construction of the subproject on Gender Equality and Children
394. In the process of constructing the subproject, it may affect gender equality, women and children in the project nearby areas and on site, so mitigation
measures are proposed to the contractor under the supervision of the PMU, construction supervision consultant and community supervision board in localities.
Specific mitigation measures are as follows:
- Continue to promote communication on raising awareness of gender equality, HIV / AIDS to all levels of people and the women themselves. Develop and
implement communication activities, models of gender equality in suitability with the subproject area. At the construction site, there should be propaganda
materials on gender, HIV / AIDS
- Management of labor flow, especially women. Cooperate with local authorities to have good management measures. Enhance the responsibility of the local
government and the contractor, especially promote the role of the heads of agencies, localities, consultancy supervision and site manager in the implementation
of the objectives of gender equality; arranging and assigning tasks to women.
- In the process of construction, there should be measures to prevent prostitution and sexual abuse against women and children.
- The construction site should be installed signs and lights at night to ensure that women and children are not impacted when going through the site at night.
- Children are prohibited from entering the construction site. Fences and hazard signs at the construction site and dangerous areas at the dam should be provided.
- Do not employ child laborers under 16 years old. Need to coordinate with localities to well manage labor flow.
7.2.3. Mitigation measures for site-specific impacts
395. In addition to the general mitigation measures mentioned above, during the implementation of the 6/8 reservoirs in Phu Yen province, there are specific
impacts on sensitive areas scattered on the construction sites. After consultation with local authorities and communities, specific solutions and implementation are
presented in the following table.
Table 90: Mitigation measures for sensitive works
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 171
No. Works Works, description Mitigation measures Responsibility
to implement Monitoring
1
Do Nhu Day Primary School is located right next
to the materials transportation route of Hon Dinh
and Dong Khon Reservoir
- Impact of dust,
noise and vibration
to elementary
students.
- Risks of traffic
safety, spilling of
materials.
- Damaged transport
route
- Implement well measures to minimize dust
and noise impacts. Full shielding when
transporting.
- Strictly control the means of transporting
materials, vehicles that need to be tested and
ensure safety when transporting.
- Do not transport materials during peak hours,
after school time, school time go to of the
students.
- Revert the status quo if causing damage to
public works.
- Traffic signs are required at the school area.
- Contractors - CSC, PPMU
Mr. Nguyen Van Phu household Hires surface of
Dong Khon lake for aquaculture
- Impact on the
livelihood of
household: Mr.
Nguyen Van Phu.
- The impact of
construction water
cuts interrupted
household bidding
and raising fish.
- Impacts on the
quality of the
rearing water
environment due to
construction
activities.
- Need to inform land clearance in advance land
acquisition to the CPC 3 months in advance
for the commune to notify households. At the
same time, notify households 2 months in
advance to harvest and move properties on the
reservoir surface.
- Since this is a contract between the Dong
Khon reservoir management board and the
households, the rights of the people and the
reservoir management board should be
ensured. There should be compensation and
support options as prescribed.
- The subproject will support households to
change their livelihoods. Supporting
households to participate in the work during
the subproject construction.
- Contractor,
local
- CSC, PPMU
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 172
No. Works Works, description Mitigation measures Responsibility
to implement Monitoring
2
The route of transporting raw materials of Dong
Khon reservoir goes through bridge old and at
risk of collapse
- Impact on traffic
safety
- Impact of vehicle
tonnage transporting
materials to the load
and safety of
bridges.
- In the seasonal
period, farmers
transport
agricultural products
through the bridge
position so the
transportation of
raw materials will
cause conflicts with
the transportation of
agricultural products
of the people..
- Impact on air
environment
- Implement well measures to minimize dust
and noise impacts. Full shielding when
transporting.
- Strictly control the means of transporting
materials, vehicles that need to be tested and
ensure safety when transporting.
- Need to consult local authorities and people
about the current load of the bridge and have
reasonable transportation plans to ensure not
to cause unsafe people and property.
- Revert the status quo if causing damage to
public works.
- Adding signposts for weight and limiting
vehicles to cross the bridge
- Contractors,
localities,
Dong Khon
reservoir
management
board
- CSC, PPMU
3
The location of Dong Tron dam has lighting
- Impacts due to the
construction of dam
items must cut
power and move
lighting system and
electrical lines..
- Impact on the lives
and safety of
construction
workers caused by
electrical incidents..
- Dissemination of electrical safety corridors
according to Decree 14/2014 / ND-CP for
workers, drivers and machines on
construction sites.
- Proposing specific construction schedule for
each construction under the subproject 1
month in advance for local electricity
management units to have a safe, rational
construction plan or take measures to protect
the line electricity..
- Contractors - CSC, PPMU
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 173
No. Works Works, description Mitigation measures Responsibility
to implement Monitoring
system and electricity to serve spillway
4
The management road and material
transportation road through the Ea Din1
reservoir, Dam is also an important transportation
route of Ea Bar commune. At present, this route
is the route to transport agricultural and forestry
products of the farms in the subproject area. The
road has been concreted
- In the seasonal
period, farmers
transport
agricultural products
through the bridge
position so the
transportation of
raw materials will
cause conflicts with
the transportation of
agricultural products
of the people.
- Causing local traffic
jam due to the
construction of
dams and bridges
over the spillway.
- Impact on the travel
of people the move
over construction
site.
- Polluting dust, noise
and traffic noise
- Local consultation on content plans and
schedules for construction of items, suitable
with the time, schedule of harvest and
transportation of agriculture and forestry
farms.
- Strictly control the material transport means's
load
- Commitment to repair, return to the status quo
of the infrastructure in case of damage
- At the construction site of a dam or spillway,
workers regulate traffic for vehicles and
people traveling through the area
- There should be signs at the construction site,
signposts indicating and electric lights
illuminate at night.
- Revert the status quo if causing damage to
public works
- Implement well measures to minimize dust
and noise impacts
- Contractors - CSC, PPMU
5
- Impact of dust,
noise and vibration
to students at
schools.
- Risks of traffic
safety, spilling of
materials.
- Damaged transport
routes.
- Implement well measures to minimize dust
and noise impacts. Full shielding when
transporting.
- Strictly control the means of transporting
materials, vehicles that need to be tested and
ensure safety when transporting.
- Do not transport materials during peak hours,
after school time, school time go to of the
students. Do not transport on crowded
holidays at Xuan Long Temple.
- Transporting raw materials on major roads
- Contractors - CSC, PPMU
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 174
No. Works Works, description Mitigation measures Responsibility
to implement Monitoring
The route of raw material transportation of Hoc
Ram reservoir goes through the National
Highway 1A, and Le Trung Kien High School -
Dong Hoa district; Nguyen Chi Thanh Secondary
School, Le Thanh Ton High School and Xuan
Long Pagoda
such as QL1A, .. Crowded areas should avoid
the use of horns, keep a safe distance from
vehicles and people in traffic.
6
The management road and material
transportation road through the through Gieng
Tien Dam is also an important transport route.
And sugar cane farmers in the area still use this
route to transport sugarcane materials...
- Impacts on traffic
safety, conflicts
between sub-project
material
transportation and
people's sugarcane
transport.
- Causing local traffic
jam
- Impact on the travel
of people the move
over construction
site.
- Polluting dust, noise
and vibration
- Notify the construction plan 3 months in
advance to the community to have appropriate
material transportation schedule
- Strictly control the means of transporting
materials
- At the construction site of a dam or spillway,
workers regulate traffic for vehicles and
people traveling through the area
- Implement well measures to minimize dust
and noise impacts
- Contractors - CSC, PPMU
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report environemental and Social impact assessment (ESIA) 175
7.2.4. Mitigation measured during operation phase
396. After the completion of the construction works, the reservoirs will ensure the water capacity
according to the designs and ensure irrigation planning for downstream agricultural cultivation. The
solutions related to the safety and operation of reservoirs are discussed further in the "Dam Safety
Report" of the same subproject.
Table 91: General mitigation measures for impacts during operation phase
Impact Mitigation measures
Responsibility
for implementa
tion
Responsibility
for
monitoring
Falling into
reservoirs,
drowning
- Equipping warning signs and installation of
dangerous warning system on the dam
areas.
- Disseminating drowning risk to the
community along the reservoirs.
Reservoir
owners
Department of
Agricultural
and Rural
Development,
community
and local
government
Repair and
maintenance
- Informing the downstream people about the
annual repair and maintenance plans.
- Performing periodic maintenance and
repairs during the shortest period of time
and at the time of the lowest water demand.
- Performing measures to maintain water
supply during repair to ensure there is no
disruption in water supply.
Reservoir
owners
Department of
Agricultural
and Rural
Development,
community
and local
government
Regulation
of reservoirs
and flood
discharges in
case of big
floods
affecting
downstream
- Preparing emergency response plans as part
of the dam safety reports.
- The Management and Operation Unit
should timely and accurately inform the
flood discharge plan for the community to
actively get informed and respond.
- At risky times like in rainy season, it is
necessary to appoint persons to regularly
monitor, to ensure proper regulation of
water sources.
- Building safety corridors for flood
discharge on the basis of impact scenarios.
The specific solutions are detailed in the
dam safety reports and emergency response
plans.
Reservoir
owners
Department of
Agricultural
and Rural
Development,
community
and local
government
Disaster
risk causes
unsafety
- The Management Units of Reservoirs
regularly check the reservoir safety.
- Performing proper operation procedures to
ensure the safety of the reservoirs.
- The Management Units of Reservoirs
closely coordinates with the Commune
People's Committees and the local people
to promptly report the risks associated with
dam safety in order to take timely
corrective measures.
- Local people and local authorities take
initiative in community-based coping
strategies.
- Developing scenarios for predicting the
extent of dam breakage effects, options for
human evacuation, solutions for life and
Reservoir
owners
Department of
Agricultural
and Rural
Development,
community
and local
government
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 176
Impact Mitigation measures
Responsibility
for implementa
tion
Responsibility
for
monitoring
community property in emergency
situations, etc. Details are included in the
Dam Safety Report and the Emergency
Response Plan of the Subproject.
Increased
use of
fertilizers
and
pesticides
- Planning for implementation of integrated
pest management (IPM)
- The management board of the lake should
coordinate with Phu Yen Provincial Plant
Protection Department to incorporate
guidelines on the use and collection of
pesticide waste in community consultation
sessions and awareness raising meetings of
people on pesticides
- Refer to the list of pesticides allowed to use
and enhance the use of alternative
biological products
Department of
Agricultural and
Rural
Development
Community
and local
government
7.3. Implementation arrangement
7.3.1. Project management
Central level
397. The Ministry of Agriculture and Rural Development (MARD) is responsible for the
implementation and management of the entire project. Provinces will be responsible for carrying out
repair and upgrade of the dams under Component 1 and MARD will coordinate activities with the
Ministry of Industry and Trade and MONRE under Component 2. The Central Project Management
Board (CPMU) under MARD is responsible for coordinating and supervising the overall project. The
implementation of repairing and preparing dam safety plan, including protection and commissioning,
is focused on the provincial government. Provincial People's Committee and Department of
Agriculture and Rural Development (DARD) is the leading agencies at provincial level. Provincial
People’s Committee and Department of Agriculture and Rural Development are the presiding units at
provincial level. The Provincial Project Management Unit (PPMU) is responsible for managing and
supervising the works with support from the CPMU.
398. The project management unit at central level will assist in the implementation of the projects
by the environmental and social technical support unit; In addition, an independent consultant unit is
hired by CPMU to evaluate the implementation of environmental safeguard policy of the entire project
every 6 months. This is the organization selected through the competitive process to provide support
and quality assurance to the central level in the implementation process. This includes support to
project management unit at the central level in reviewing and adjusting when needed and re-
implementing the development framework during the project implementation to provide a general
framework for national programs. This process will be considered in accordance with the context of
Decree 72 to assist MARD in establishing the necessary systems for the implementation of the
National Dam Safety Program.
Provincial level
399. The People's Committee of Phu Yen province assigns the Department of Agriculture and
Rural Development to carry out the project in the area, establish the WB8 Provincial Project
Management Unit (PPMU) to carry out the bidding, supervise the construction; implement
resettlement action plan, environmental and social action plan and these actions and plans must be in
line with the overall framework of the overall project. The PPMU will be supported by technical and
environmental consultants from the CPMU. Project implementation organizations are presented in the
following diagram.
Figure 3: Structure of environmental management and supervision organization
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 177
(Source: DRSIP Framework for Social Monitoring, 2015)
7.3.2. Roles and responsibilities for environmental and social safeguard management
400. Regarding regular investment monitoring activities, the CPMU together with local
environmental authority will determines whether the implementation of the project meets all the
requirements in the environmental and social management framework, socio-environmental impact
assessment report and environmental management plan. This agency will conduct field survey at
different stages of the project to confirm that the social and environmental management plan and the
environmental and social monitoring plan are being fully implemented. A monitoring report including
environmental and social management issues will be included in the overall field report. The assigned
environmental and social specialists are responsible for preparing quarterly and annual reports on
major project implementation steps, outputs and results of environmental management actions
implemented for all investments throughout the project cycle.
401. The CPMU requires the PPMU to have a corresponding environmental component in its
investment, including significant mitigation activities, and to mention significant environmental
incidents that have occurred. All PPMUs must include the environmental component in all reports
prepared submitted to the World Bank.
402. Stakeholders should be fully aware of the mechanism for implementing ESIA in project
investments. This will be very important in supporting and evaluating their role in environmental
monitoring and evaluation of the subproject activities. Organizational chart during ESIA
implementation is presented in the following Figure.
Figure 4: Organizational chart of subproject safeguard performance
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 178
403. Roles, implementation responsibility and monitoring of ESMP implementation by
stakeholders are shown in the following table.
Table 92: Roles and responsibilities of stakeholders
Community / Organization Responsibility
Central Project Management
Unit (CPMU)
- Overall management and coordination of the project;
- Contact the implementing agencies to implement all project
components;
- Coordinate with WB to provide environmental and social
consulting services for the project;
- Assist the RP-PMU (Resettlement Compensation Board) to
update the RPs for the project components;
- Synthesize environmental and social reports submitted to
relevant ministries and WB; and
- Recruit and supervise independent consultancy units
(consultants) to conduct social environment monitoring.
Independent monitoring
consultant
- Independent Environmental and social consultants will assist the
CPMU in carrying out its tasks, especially in updating and
implementing the resettlement plan and social and
environmental management plan. Similarly, consultant also
provides interventions for training and capacity building if
needed and technical assistance in the implementation of
environmental and social policies and updating of the
resettlement plan.
Investor, Provincial Project
Management Unit (PPMU)
- The PMU will be responsible for monitoring the overall
implementation of the subproject, including environmental
compliance of the subproject. The PMU will be responsible for
the final implementation of the EIA and the environmental
performance of the subproject during the construction and
operation phases.
- Specifically, PMU will: (i) coordinate closely with the local
authorities in the participation of the community in the process
of preparing and implementing subproject; (ii) monitor the
implementation of the environmental protection plan, including
mainstreaming of environmental management plan into detailed
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 179
Community / Organization Responsibility
technical design, bidding documents and contract; (iii) ensuring
that an environmental management system is established and
operated properly; (iv) be responsible for reporting on the
implementation of the environmental and social protection plan
to the Department of Environmental and Natural Resource and
the World Bank.
- To be effective in the implementation process, the PMU will
assign environmental staff (ES) to support the environmental
aspects of the subproject.
Environmental monitoring and
supervision unit
- Be set up by the investor to evaluate the environmental status of
the subproject, assess the environmental quality during the
subproject construction process and monitor the compliance
with the environmental management plan set out in the EIA.
Environmental and social staff
of the PMU (ES)
- Socio-environmental officer is responsible for monitoring
implementation of World Bank's social and environmental
safeguard policies in all phases and progress of subproject.
Specifically, Socio-environmental officer will be responsible
for: (i) helping PMU incorporate ESMP into detailed technical
designs and civil engineering tenders and contract documents;
(ii) helping PMU integrate its monitoring responsibilities and
monitoring of ESMP into TORs, tenders and contract
documents to construction supervision consultant when
necessary; iii) providing relevant inputs for consultancy
selection process; (iv) reviewing reports submitted by
monitoring consultant and safety consultants; (v) conducting
periodic site inspections; (vi) helping PMU solve social and
resettlement issues of sub-project; and (vii) preparing
environmental and social performance section on the progress
and review reports to be submitted to the DONRE and the
World Bank.
Construction supervision
consultant
- Construction supervision consultant will appoint socio-
environmental staff in charge of regular monitoring and
supervision of all construction activities and ensure that the
Contractor is in compliance with contractual requirements and
ECOP. Construction supervision consultant will recruit enough
qualified employees (e.g., environmental engineers) with
comprehensive knowledge of environmental management and
project construction to carry out mandatory tasks and supervise
performance of Contractors.
- Construction supervision consultants will also assist PMUs in (i)
reporting and maintaining close coordination with local
communities, and (ii) strengthening capacity of civil
contractors.
Bidder
The Bidder shall submit to PPMU the following additional
documents in its Bid:
Code of Conduct (ESHS)
- The Bidder shall submit its Code of Conduct that will apply to
its employees and subcontractors, to ensure compliance with its
Environmental, Social, Health and Safety (ESHS) obligations
under the contract.
- In addition, the Bidder shall detail how this Code of Conduct
will be implemented. This will include: how it will be
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 180
Community / Organization Responsibility
introduced into conditions of employment/engagement, what
training will be provided, how it will be monitored and how the
Contractor proposes to deal with any breaches
Management Strategies and Implementation Plans (MSIP) to
manage the (ESHS) risks
- The Bidder shall submit Management Strategies and
Implementation Plans (MSIP) to manage the following key
Environmental, Social, Health and Safety (ESHS) risks.
+ Traffic Management Plan to ensure safety of local
communities from construction traffic;
+ Water Resource Protection Plan to prevent contamination
of drinking water;
+ Boundary Marking and Protection Strategy for
mobilization and construction to prevent offsite adverse
impacts;
+ Strategy for obtaining Consents/Permits prior to the start
of relevant works such as opening a quarry or borrow pit.
Contractor
- The contractor shall assign Environmental and Social Staff(s) to
carry out Environmental and Social mitigation measures
proposed in the ESMP.
- The Contractor shall be required to submit to PPMU/CSC for
approval, and subsequently implement, the Contractor’s
Environment and Social Management Plan (C-ESMP), in
accordance with the Particular Conditions of Contract Sub-
Clause 16.25, that includes the agreed Management Strategies
and Implementation Plans.
- The Contractor is required to appoint a competent individual as
the contractor’s on-site Safety and Environment Officer (SEO)
who will be responsible for monitoring the contractor’s
compliance with Code of Conduct and MSIP which is set out in
the Section VII – Works’ Requirements of SPDs.
- Take actions to mitigate all potential negative impacts in line
with the objective described in the CESMP.
- Actively communicate with local residents and take actions to
prevent disturbance during construction.
- Ensure that all staff and workers understand the procedure and
their tasks in the environmental management program.
- Report to the PPMU and CSC on any difficulties and their
solutions.
- Report to local authority and PPMU and CSC if environmental
5 The Contractor shall not commence any Works, including mobilization and/or pre-construction activities (e.g. limited
clearance for haul roads, site accesses and work site establishment, geotechnical investigations or investigations to select
ancillary features such as quarries and borrow pits), unless the Project Manager is satisfied that appropriate measures are in
place to address environmental, social, health and safety risks and impacts. At a minimum, the Contractor shall apply the
Management Strategies and Implementation Plans and Code of Conduct, submitted as part of the Bid and agreed as part of
the Contract. The Contractor shall submit, on a continuing basis, for the Project Manager’s prior approval, such
supplementary Management Strategies and Implementation Plans as are necessary to manage the ESHS risks and impacts of
ongoing works. These Management Strategies and Implementation Plans collectively comprise the Contractor’s
Environmental and Social Management Plan (C-ESMP). The C-ESMP shall be approved prior to the commencement of
construction activities (e.g. excavation, earth works, bridge and structure works, stream and road diversions, quarrying or
extraction of materials, concrete batching and asphalt manufacture). The approved C-ESMP shall be reviewed, periodically
(but not less than every six (6) months), and updated in a timely manner, as required, by the Contractor to ensure that it
contains measures appropriate to the Works activities to be undertaken. The updated C-ESMP shall be subject to prior
approval by the Project Manager.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 181
Community / Organization Responsibility
accidents occur and coordinate with agencies and keys
stakeholders to resolve these issues.
7.4. Environmental Compliance Framework
404. The tasks of contractors, environmental safety staff and monitoring consultants stated here but
not defined in SPDs should be included in requirements of the Investor (Part VII of SPDs).
7.4.1. Environmental tasks of the Contractor6:
405. The contractor firstly must comply to minimize impacts that may result from subproject
construction and secondly apply ESMP mitigation measures to prevent losses and inconvenience to
local community and environment caused by impacts during construction and operation phase.
406. Remedial measures that cannot be effectively implemented during construction shall be
conducted upon completion of the work (and before acceptance of work completion)
407. Contractor’s tasks include but not limit to:
- Compliance with related legal requirements on environment, public health and safety;
- Working within required scope of contract and other tender conditions;
- Arrange representatives of construction team to join site inspection conducted by
environmental officer from monitoring consultant;
- Carry out any remedy instructed by environmental officer from project management unit and
monitoring consultant;
- In case of non-compliance/inconsistency, investigation must be carried out to propose
mitigation measures and remedies shall be conducted to minimize environmental impact;
- Stop construction activities that generate negative impacts upon receiving instruction of
environmental staff of project management unit and monitoring consultant; propose and
implement remedies and conduct alternative construction methods, if needed, to minimize
environmental impact. Non-compliance by contractor will result in suspension of construction
and other penalties until non-compliance is properly addressed following requirements of ES
of project management board and monitoring consultant.
7.4.2. Contractor’s safety, social and environmental officer
408. The contractor shall be required to designate eligible staff (s) to act as safety, socio-
environmental officer. Safety, social and environmental officer must be properly trained in
environmental management and must possess necessary skills to transfer environmental management
knowledge to all contract employees. Safety, social and environmental officer will be responsible for
monitoring contractor’s compliance with ESMP requirements and environmental specifications. The
task of safety, social and environmental officer will include but not limit to the followings:
- Conduct environmental site inspections to assess and audit practices, equipment and working
6If the Contractor is not/does not perform any of the ESHS obligations or works under the Contract, the value of the work or
obligation determined by the Project Manager may be withheld until the work or obligation is made and / or repair or
replacement costs as determined by the Project Manager may be withheld until the repair or replacement is completed. Not
implementation includes but not limit as follows:
• Do not comply any obligation or work of ESHS described in the requirement of the works, including: working
outside the land plot, dust obey the allowable limit, dot not keep the status of public roads in safe condition,
damage to vegetation, pollution of water resource or sedimentation, pollution of soil due to lubricant, waste of
people, damage to archeology or cultural heritage, pollution of air due to fire, not allowed and not effective;
• Do not frequently re-check C-ESMP and / or do not update C-ESMP timely and effectively to hand issues of ESHS
or forecast risk of impacts;
• Do not implement C-ESMP;
• Do not have acceptance/ appropriate license before implementing works or relevant activities;
• Do not submit the ESHS report (as described in Annex C of SPD), or do not submit report timely;
• Do not implement handling measures in accordance with guideline of engineer during the regulated time (for
example of handling the incompliance).
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 182
methods of contractors on pollution control and environmental mitigation measures
implemented;
- Monitoring compliance with environmental protection measures, pollution prevention and
control measures and contract requirements;
- Monitoring the implementation of environmental mitigation measures;
- Preparation of audit reports for environmental conditions of the site;
- Investigate complaints and propose corrective measures;
- Advise contractors on measures to prevent environmental pollution; raise awareness and
remain proactive;
- Propose appropriate mitigation measures for contractors in case of non-compliance.
Implement additional monitoring of non-compliance guided by ES of PMU and monitoring
consultant;
- Inform contractors and ESs (to PMU and monitoring consultant) about environmental issues;
submit ESMP Implementation Plan of Contractor to ES of PMU and monitoring consultant
and relevant agencies, if requested;
- Keep a detailed record of all.
7.4.3. Social and environmental monitoring during construction phase (Monitoring
Consultant)
409. During the construction phase, monitoring consultant eligibly reports to PMU for
environmental monitoring. Monitoring consultant will assign environmental and social staff in charge
of monitoring and supervising all construction activities to ensure that the mitigation measures applied
in the ESMP are properly implemented and help to minimize negative environmental impact caused
by subproject. Monitoring consultant will provide sufficient environmental monitoring engineers with
comprehensive knowledge of environmental protection and construction project management to
perform mandatory tasks and monitor performance of contractors. Specifically, environmental and
social officer of motoring consultant will:
- On behalf of PMU to review and evaluate whether the design meets the requirements of the
ESMP mitigation and management measures;
- Supervise contractors' environmental management systems, including performance,
experience and environmental issues troubleshooting, and provide guidance on remedial
measures;
- Review implementation of ESMP by contractors; verify and confirm environmental
monitoring procedures, parameters, monitoring location, equipment and results;
- Report status of ESMP implementation to PMU and prepare environmental monitoring report
during construction phase;
7.4.4. Compliance with contract requirement and legal regulations
410. Construction activities not only comply with the requirements of environmental protection and
contract pollution control but also comply with the Law on Environmental Protection and Pollution
Control of the Socialist Republic of Vietnam.
411. All reports on modality method submitted to monitoring consultant and PMU by the
Contractor for approval to see if there are sufficient environmental protection and pollution control
measures. Monitoring consultant and PMU will also review progress and program of the works to
check that relevant environmental laws have not been violated and may prevent any possibility of
violating the law.
412. The contractor will make copies of the documents related to safety, social and environmental
officer and environmental officer of monitoring consultant and PMU. Document must include at least
updated work progress report, updated working methods and other license / permit applications in
accordance with the Environmental Protection Action and all valid permits / licenses. Safety, social
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 183
and environmental officer and environmental officer will also have access, on request, to the Site Log.
After reviewing documents, Safety, social and environmental officer or environmental officer will
advise PMU and contractor on non-compliance with contractual requirements and legal regulation on
environmental protection and pollution control for their implementation of the next actions. If safety,
social and environmental officer or environmental officer concludes that status on the permit/
application of the permit and any prepared environmental protection and pollution control works may
not comply with construction methods or may result in violation of requirements on environmental
protection and pollution control, they will advise the contractor and PMU accordingly.
7.4.5. Report System
413. In addition to the progress report, the Contractor will also provide a report on environmental,
social, health and safety indicators listed in Annex B of the SPDs. In addition to the Annex B report,
the Contractor shall also promptly notify PMU of any incidents in the following categories. Full
details of such incidents will be provided to PMU within agreed time frame.
- Confirm or likely to violate any international law or agreement;
- Fatality or serious injuries;
- Significant adverse effects or damage to private property (e.g. car accident, damage caused by
flying stones, working outside the territory)
- Major pollution of living water or damage to or destruction of rare or endangered habitats
(including protected areas) or species;
- Any allegations of sexual harassment or sexual misconduct, child abuse, pollution or other
violations involving children.
Table 93: Requirements on report system
No Preparation of report Submitted to Frequency of report
1 Contractor Monitoring
Consultant
ESMP implementation report, including
environmental, health and safety issues,
Frequency of reporting: weekly or
monthly;
Report OHS incidents immediately;
2 Construction supervision
consultant PMU
Monthly report on ESMP implementation
monitoring, reporting frequency: monthly;
Report OHS incidents immediately;
Report according to environmental issues,
health and safety arising at the request of
PMU
3 Community supervision
board PMU
When the community has any complaints
about the implementation of the
subproject safeguard policy
4
Consultants implementing
monitoring of
environmental quality
PMU
Every 3 months according to the
frequency of monitoring;
Monitoring when there are environmental
incidents
5 PPMU
Department of
Environmental
and Natural
Resource
Every 6 months according to Government
regulations
Immediately report an incident, or when
further requests are made
6 PPMU CPMU
Every 3 months, PPMU reports quarterly
provincial supervision to CPMU.
Report immediately when there is a
problem, or when there are additional
requests for content that changes or needs
clarification
7 CPMU WB Every six months in accordance with
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 184
Section II of Loan Agreement
Report immediately when there is OHS
incident, or when there are further
requests for the content changes or need
clarification
7.5. Grievance redress mechanism
414. Complaints related to subproject issues will be addressed through negotiations to reach the
consensus. A complaint will go through three stages before it can be sent to the court. The executing
agency will pay all administrative and legal fees related to the acceptance of the complaint. This cost
is included in the subproject budget. The procedures for handling complaints shall be as follows:
7.5.1. Complaints and complaint settlement procedures
The first level, CPC/Ward PC:
415. An affected household can send his / her complaint to any member of the ward / commune
People's Committee, through the village head or directly to the commune / ward People's Committee,
in writing or verbal. The above member (s) of the People's Committee or village head will inform the
commune / ward People's Committee of the complaint. The commune / ward People's Committee will
directly work with the affected household above and will decide to settle the complaint after five days
from the date of receiving the complaint (it can take 15 days in mountainous or remote areas). The
Secretariat of the People's Committee of the commune / ward is responsible for compiling and
recording all complaints they are dealing with.
416. After the People's Committee of the ward / commune issues its decision, the relevant
household can appeal within 30 days. In case the second decision is issued but the household above is
still not satisfied with the decision, the household can appeal to the People's Committee of the city /
district / town (City’s PC).
The second level, DPC, Town PC and City’s PC:
417. After receiving a complaint from a household, DPC will have 15 days (or 30 days in the case
of remote areas) to resolve the case. The District People's Committee is responsible keeping records of
all complaints that it handles. When the DPC makes a decision, the household can appeal within 30
days. In case the second decision has been issued and the household is still unhappy with the decision,
they can appeal to the Provincial People's Committee.
Level 3, PPC:
418. Upon receiving the complaint from the household, the PPC will have 30 days (or 45 days for
remote areas) to resolve the case. The PPC is responsible for submitting and keeping documents for all
submitted complaints.
419. After the PPC issues the decision, the household can appeal within 45 days. In case the second
decision is issued and the household is still unhappy with the decision, they can appeal to the court
within 45 days. After that, PPC will have to send compensation to the account.
Level 4, Provincial Court:
420. In the event that a complainant sends his or her case to the provincial court and court rules are
helpful for the complainant, the provincial government will have to increase the compensation level.
In the case of a court judgment in favour of the PPC, the complainant will be returned the amount paid
to the court.
421. Decision on redressing compliant will be sent to the complainant and the stakeholders and
publicly posted in relevant PCs. The compliant will receive judgment three days after having
complaint redressing result from ward/commune/town and seven days at district or provincial levels.
422. In order to minimize the number of complaints at the provincial level, the PMU will
coordinate with District Compensation Committee to participate and advise on redressing the
complaint and respond to the complainant. The role and capacity of PMU is to provide compensation,
support and resettlement to affected households and displaced persons.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 185
423. Human Resources: Staff in charge of environment and resettlement selected by the PMU will
design and maintain a database of subproject-related complaints from affected households, including
information such as: the nature of the complaint, the source and date of receipt of the complaint, the
name and address of the complainant, the action plan and the current status.
424. For verbal complaint, Receiving and Reconciling Board will record the complaint in a
complaint form in the first meeting with affected person.
7.5.2. Contractor and construction supervision consultant:
425. During the construction process, the GRM will be also managed by contractors under the
supervision of CSC. Contractors will inform affected communities and communes about the
availability of GRM to handle complaints and concerns about the subproject. This will be done
through community consultation and information disclosure process whereby contractors will contact
affected communities and related agencies on a regular basis. Meetings will be held at least quarterly
and monthly information brochures will be announced. The announcements will be made on local
media to disseminate about coming activities.
426. Every complaint and corresponding action implemented by the contractor will be recorded in
safeguard monitoring report of the subproject. Complaints and requirements on compensation will be
submitted as follows:
- By verbal: directly to CSC and/or safeguard officials or representative of contractor in the site
office;
- By writing: handing over or sending complaint letter to the designated address;
- By phone, fax, email: send to CSC, employee or safeguard representative of the contractor.
427. When receiving a complaint, CSC, staffs or safeguard representative of the contractor will
register the complaint in the complaint file and maintain diary of the events related to the complaint
until the complaint is resolved. Immediately upon receipt, four copies of the complaint will be
prepared. The original copy will be kept on file, one copy will be used by the contractor's safeguard
staff, one copy will be sent to the CSC and the fourth copy will be sent to the PMU within 24 hours
from the time of receiving complaint letter.
428. Recorded information on the complaint includes:
- Date and hour of complaint;
- Name and address of the complainant;
- Brief of complaint;
- Actions taken to resolve the complaint, including person contacting and finding at each step in
the complaint handling process;
- Date and time when the complainant is allowed to contact to resolve;
- Final decision on the complaint letter;
- Date, time and method that the complainant is informed;
- Signature of the complainant when his/her complaint is resolved.
429. Minor complaint will be processed within one week. Within two weeks (and every week
thereafter), a written response will be sent to the complainant (by hand, post, fax, e-mail) indicating
procedures which are conducted until now.
430. The main objective is to solve the problem as quickly as possible by the simplest means,
involving as few people as possible, and at the lowest level as possible. Only if a problem cannot be
resolved at the simplest level and / or within 15 days, other functional agencies will be involved. Such
situations may arise, for example, when the amount paid cannot be resolved for the damage, or the
cause of the damage is determined.
7.5.3. Grievance redressing mechanism of WB
431. Community and individual believe that if they are adversely affected by a project funded by
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 186
World Bank (WB), they can send their complaint to the grievance redressing mechanism at subproject
level or complaint redressing board of WB. This organization ensures that recorded complaint will be
quickly considered to resolve issues related to the subproject. Subproject affected community and
individual can send their complaint to external monitoring board of WB to determine if bad effect is
happened or not due to not complying with policies and procedures of the WB. Complaints are
considered in any time if the complaints are paid attention and the PMU will be responsible for
responding. In order to know information on how to send complaint to the grievance redressing
service of WB, please refer to: www.worldbank.org/grs. In order to know information on the way to
send complaint letter to Inspection Board of WB, please refer to: www.inspectionpanel.org.
7.6. ESMP Implementation plan
7.6.1. ESMP Implementation Plan of the Contractor
432. Upon contract signing, based on the ESMP of approved subproject and construction method,
the construction plan has been approved by monitoring consultant and the PMU, the Contractor shall
prepare Contractor’s ESMP (C -ESMP) for the package and submit to monitoring consultant for
review and approval.
- After the C-ESMP has been approved by monitoring consultant, the contractor shall take
measures to mitigate environmental and social impacts on site.
- The C-ESMP will be published at worker camps and site offices to disseminate information on
mitigation measures to workers.
- Make public information board at the entrance of construction site with available addresses,
representatives, phone numbers of the concerned parties for monitoring by local community
and contact when needed.
- Assign staff in charge of environment and safety, training and providing protective equipment,
periodical health checks for workers;
- Survey and check on-site environmental status, report to monitoring consultant if there are any
significant differences compared to base environment.
- Sign contracts with authorized units to treat domestic wastes, hazardous waste, and supply
clean water.
- Manage workers and construction equipment and provide new certificates/permits in case of
expiration.
- Implement ESMP and update, and submit to construction supervision consultant for approval
if any changes before applying.
- Coordinate with PMB and construction supervision consultant to redress complaints of local
people on environmental and safety issue of the package in a timely manner.
- Monthly report on ESMP implementation of the package.
7.6.2. Subproject commencement and personnel
433. The contractor's staff in charge of environment protection must be an environmental engineer
or one with related expertise and must have an occupational health and safety certificate and work full-
time on site.
434. Provide training on occupational health and safety and regular health checks for workers.
7.7. Capacity development and training plan
7.7.1. Training on safety policies
435. Phu Yen DARD has implemented projects funded by the World Bank, so there is a certain
understanding of the WB's safeguard policy requirements. The PMU established under Phu Yen
DARD for the implementation of this sub-project has appointed a staff to be responsible for
implementing the environmental safeguards of the subproject. However, this officer has not yet
grasped the requirements of the Bank's safeguard policy. As a result, the environmental officer has
participated in World Bank safety training courses organized by the World Bank and the CPMU at the
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 187
early stage of project implementation. Training and capacity development are annually carried out
through technical assistance activities of World Bank safeguard policy officers focusing on new
safeguard policy requirements. As new environment, society, health and safety requirements are set
out in the standard bidding documents, training in the environment, society, health and safety
requirements will be provided by the World Bank's Safeguard Policy Officer to the environmental and
social safeguard staff of the PPMU, the construction supervision consultant, the environmental and
social safeguard staff of the contractor as soon as they are mobilized and the PPMU will be
responsible for organizing the training in coordination with World Bank safeguard officers.
436. Such training courses will be held at the early stage of the subproject implementation process
to ensure that the ESMP is properly integrated into the bidding document (and subsequently the
contract). Technical assistance should be provided by experienced and skillful staff of construction
supervision consultants, and implemented in accordance with the terms of reference including specific
references to the development of the requirements of the investor for the standard tender. In addition,
the types of training courses will be implemented as follows.
7.7.2. Occupational health and safety training
437. Provisions will be made to provide occupational safety and health training for all new
employees to ensure they are informed of the basic regulations in the site on personal protection and
prevention of colleagues from injuries.
438. Training will include basic hazard perception, specific hazards, safe work practices, and
emergency procedures for fire, evacuation and natural disasters in appropriate manner. Any used
particular hazard or color code will be considered in a thoughtful way as a part of the orientation
training..
7.7.3. Orientation of visitors
439. If visitors are allowed access to areas with hazardous conditions or substances, orientation and
control program for visitors will be established to ensure that visitors do not go into dangerous areas
without being accompanied.
7.7.4. Training for new contractors and workers
440. The PPMU will ensure that workers and contractors, before starting new work, will receive
adequate training and information so that they can understand the hazards of work and protect
themselves from the hazards. Training will include:
441. Understand about materials, equipment and tools
- Understand about the hazards in operation and how to control them
- Potential risks to health
- Warnings to prevent exposure
- Sanitary requirements
- Wear and use clothing and protective equipment
- Appropriate response to extreme operating conditions, accidents and incidents
7.7.5. Basic training on occupational health and safety
442. A basic training program and intensive courses will be implemented as needed to ensure that
workers are oriented towards the specific hazards of separated work tasks. Training will generally be
provided to managers, supervisors, workers, and occasional visitors to risk and hazardous areas.
443. Workers in charge of first aid and rescue will receive special training not to intentionally
exacerbate the exposure and health hazards to themselves and their colleagues. Training will include
the risk of transmitting the disease through blood through contact with tissue and body fluids.
444. Through appropriate contractual terms and monitoring, the PPMU will ensure that service
providers as well as contractual labors and subcontractors are adequately trained before
commencement of work.
445. The PPMU will be responsible for coordinating with construction supervision consultant and
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 188
officer in charge of environment of contractor to organize training courses above.
7.8. Environmental quality monitoring plan
7.8.1. The compliance monitoring
446. Environmental compliance monitoring is carried out to assess the compliance with operational
standards and proposed national environmental norm and standards. The main purpose of the
Environmental Compliance Monitoring is to ensure that all proposed mitigation measures are
complied with by contractors during the construction, to early identify arising environmental issues
and to timely propose additional mitigation measures.
- The PPMU and the CSC will monitor the compliance of the standards. The PPMU and the
CSC will monitor the Contractors’ activities in accordance with the agreed mitigation
measures. The results are summarized in the monthly reports.
- Local authorities in 13 communes and communities in 8 reservoirs will carry out monitoring
tasks according to Government regulations, Law on Environmental Protection in 2014 and
Decree 80/2005 / ND-CP - Regulation regulations on community investment monitoring.
- In addition, the Contractors’ environmental safety staff will be responsible for day-to-day
monitoring of labor safety and environmental sanitation and reporting to the CSC.
- The detailed monitoring plans will be prepared during the detailed design phase. Expenditures
for the monitoring program will be included in the cost of the CESMP implementation.
7.8.2. Monitoring of environment quality
(a) Periodic monitoring
447. Ambient environmental quality monitoring program such as air, soil and water quality
provides information that can be used to assess the effectiveness of pollution management strategies.
A systematic planning process is recommended to ensure that the data collected are adequate for their
intended purposes (and to avoid collecting unnecessary data). This process, sometimes referred to as a
data quality objectives process, defines the purpose of collecting the data, the decisions to be made
based on the data and the consequences of making an incorrect decision, the time and geographic
boundaries, and the quality of data needed to make a correct decision. The ambient environmental
quality monitoring program shall consider the following elements:
- Monitoring parameters: The monitoring parameters selected should reflect the pollutants of
concern associated with subproject processes.
- Baseline calculations: Before the subproject is developed, baseline ambient environmental
quality monitoring at and in the vicinity of the site should be undertaken to assess background
levels of key pollutants, in order to differentiate between existing ambient conditions and
subproject-related impacts.
- Monitoring type and frequency: Data on ambient environmental quality generated through the
monitoring program shall be representative of the pollutants emitted by the subproject over
time. Monitoring frequency and duration may also range from continuous to less frequent,
monthly, quarterly or yearly tests.
- Monitoring locations: Ambient environmental quality monitoring may consist of off-site or
fence line monitoring either by the subproject owner, DONRE, or by collaboration between
both. The location of monitoring stations should be established based on the results of
scientific methods and mathematical models to estimate potential impact to the receptors from
an emissions source taking into consideration such aspects as the location of potentially
affected communities.
- Sampling and analysis methods: Monitoring programs should apply national or international
methods for sample collection and analysis, such as those published by the International
Organization for Standardization (ISO). Sampling shall be conducted by, or under, the
supervision of trained individuals. Analysis shall be conducted by entities permissible or
certified for this purpose. Sampling and analysis Quality Assurance / Quality Control
(QA/QC) plans shall be applied and documented to ensure that data quality is adequate for the
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 189
intended data use (e.g., method detection limits are below levels of concern). Monitoring
reports should include QA/QC documentation.
448. Noise monitoring may be carried out for the purposes of establishing the existing ambient
noise levels in the area of the proposed subproject, or for verifying operational phase noise levels.
Noise monitoring programs should be designed and conducted by trained specialists. Typical
monitoring periods should be sufficient for statistical analysis and may last 48 hours with the use of
noise monitors that should be capable of logging data continuously over this time period, or hourly, or
more frequently, as appropriate (or else cover differing time periods within several days, including
weekday and weekend workdays). The type of acoustic indices recorded depends on the type of noise
being monitored, as established by a noise expert. Monitors should be located approximately 1.5 m
above the ground and no closer than 3 m to any reflecting surface (e.g., wall). In general, the noise
level limit is represented by the background or ambient noise levels that would be present in the
absence of noise source(s) under investigation.
449. Monitoring frequency and parameters: The parameters, location and frequency of monitoring
the quality of environmental components are summarized in the following table according to Circular
24/2017 / TT-BTNMT dated September 1, 2017 and according to the instructions of the project's
Environmental and Social Management Framework.
Table 94: Summary of the contents of quality monitoring of environmental components in the
construction phase and operation and maintenance
Environment Location Frequency Measured
parameters
National Technical
Regulations to be
applied
I. Construction phase
Air quality and
noise
1 positions
at each
reservoir
Once every
3 months
SO2, NOx, CO, dust
PM10, dust PM2.5
and microclimate,
vibration and noise
levels
QCVN 05:2013/BTNMT
QCVN 26:2010/BTNMT
QCVN 27:2010/BTNMT:
Surface water
quality
1 positions
at each
reservoir
Once every
3 months pH, SS, BOD5, PO4
3-,
NH4+, SO4
2-, Total
oil, Cu, Fe, Coliform
QCVN 08-
MT:2015/BTNMT
Groundwater
quality
1 positions
at each
reservoir
Once every
3 months pH, stiffness, DO,
PO43-, Tổng N;P,
NH4+, SO4
2-, Cu, Fe,
Coliform; Nitrat
(NO3-)
QCVN 09-MT:
2015/BTNMT
Quality of soil
environment
1 positions
at each
reservoir
Once every
3 months Cd, Cu, Pb, Zn QCVN 03-
MT:2015/BTNMT
II. Maintenance operation phase
Monitoring
surface water
quality at
reservoir location
1 positions
at each
reservoir
Once every
6 months in
the first
year
pH, SS, BOD5, PO43-,
NH4+, SO4
2-, Total
oil, Cu, Fe, Coliform
QCVN 08-
MT:2015/BTNMT
Ecological index Subproject
area
Monitoring
in the field
and
interviewing
local people
Aquatic species
Note:
- QCVN 05: 2013 / BTNMT - National technical regulation on ambient air quality
- QCVN 26: 2010 / BTNMT: National technical regulation on noise
- QCVN 27: 2010 / BTNMT: National technical regulation on vibration
- QCVN 08-MT: 2015 / BTNMT: National standard on surface water quality
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 190
- QCVN 09-MT: 2015 / BTNMT: National technical regulation on underground water quality
- QCVN 14: 2008 / BTNMT: National technical regulation on domestic wastewater quality
(b) Incident monitoring
450. The purpose of this monitoring is to assess the level of pollution to land and watercourse due
to accidental discharge such as discharge of wastewater and waste oil into nearby watercourse and
land and make a timely decision on pollution control which would help reduce environmental risks.
451. An incident monitoring plan will be developed by CSC at the early stage of subproject
implementation and submitted to PPMU for approval. This plan will identify the potential
environmental risks due to accidental discharge of wastes such as wastewater and waste oil into
nearby watercourse and land. The plan also defines manners to conduct this monitoring, such as
competent personnel, equipment, monitoring locations and parameters, analysis method, dedicated
laboratory, and cost estimates.
7.8.3. Dam safety monitoring
Once the water is accumulated and the dams start operating, the dam owners are responsible for
monitoring the dam safety. This task is done by qualified independent specialists who are not involved
in the investigation, design, construction or operation of the dams. After the dams are in normal
operation, the regular inspection stages take place, including safety inspection of the dams before and
after annual flood season in accordance with Government Decree No. 114/2018/ND-CP on Dam
Safety Management.
7.9. Estimated cost
452. Cost ESMP program implementation will include: i) costs of implementing mitigation
measures on construction sites, This cost is mainly from the contractor's activities; ii) cost of
compliance monitoring, This cost will be included in the contract with the construction supervision
consultant, operational costs, management of PMU; iii) cost of implementing quality monitoring of
environmental components; and iv) Training and capacity building costs. The total ESMP
implementation cost is estimated in the following table (Detailed costs for each item are shown in
Appendices 8 and 9 of this report).
Table 95: Estimated costs for ESMP
No. Cost item Unit Amount
1 Costs for environmental monitoring VND 685,115,631.2
2 Training costs to strengthen capacity VND 102,000,000
3 Costs for environmental treatment works VND 226,000,000
4 IPM program costs VND 82,250,000
5 Contingency (10%) VND 109,536,563,12
6 Total VND 1,204,902,194.32
453. The community involvement in the ESIA implementation is voluntary for the benefit of the
community and people themselves. Therefore, people participating in the CESMP monitoring will not
be paid. However in order to encourage the community participation, the cost of materials and tools
should be allocated to the monitoring activities to support selected community members to participate
in the monitoring. According to Decision No.80/2005/QDTTg dated 18/4/2005 by the Prime Minister
on the Regulation on Investment Community Supervision and the Joint Circular guiding the
implementation of Decision No.80/2005/QD-TTg: "The cost of investment community supervision in
the communes/wards is included in the estimated cost of the budget of the Fatherland Front at the
commune level and deducted from the commune/district budget and financial support for
dissemination, training courses, guidelines, preliminary and final reports. the provincial and district
levels will reimburse from the cost estimate of the Front Fatherland at the provincial/district levels,
which is deducted from the provincial budget”.
454. The table below summaries the funding flow for the environmental quality monitoring and
capacity building during the implementation of Phu Yen Subproject.
Table 96. Budget source for ESMP monitoring
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 191
Contents Costs Budget source
(a) Minimize during construction Part of the construction contract WB
(b) Control of safety policies during
construction
Part of the cost of Construction
Supervision Consultant (CSC) WB
(c) PMU is in charge of environmental
safety policies
Part of the cost of the PMU Counterpart
fund
(d) Environmental quality monitoring Cost of renting environmental
monitoring WB
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report environemental and Social impact assessment (ESIA) 192
Table 97: Summary of mitigation measures
Phase
Environmental
and social
issues
Mitigation measures Location Applied
standards
Cost for
mitigation
Agency being
responsible for
implementation
Agency being
responsible for
monitoring
Pre-construction phase
1 Clearing of
plant on
temporarily and
permanently
acquired land
area
- Only conduct clearing on
defined area.
- Utilize plant waste to be
fuel or material
- Collect unused plant waste
and transport to local dumping
site
- Restore the vegetation as
soon as possible to maintain
the landscape, microclimate
condition, and habitat of local
animals.
Sub-project area Compensation and
site clearance cost
Head of affected
household
PPMU and
People's
Committees of
districts and
communes
2 The total
occupied land
area of the
subproject is
21.64 ha of
permanently
acquired land
and 7.59 ha of
temporarily
occupied land.
Of which acacia
area is 0.049 ha
(about 88 trees
with a diameter
of 5 - 20cm),
1.75 ha of
eucalyptus trees
with about 3527
trees with
Compensation, support and
resettlement for people
affected by losses of land,
houses, income and assets.
Implementation of site
clearance compensation will
comply with the subproject's
updated resettlement plan..
Especially, there should be
measures to support and
minimize the impact on 12
ethnic minority households
whose land is recovered by the
subproject
The entire
affected
subproject area
Land Law No.
45/2013 / QH13,
relevant decrees
and circulars
785,413,961 VND Subproject DPCs
and CPCs
PPMU and local
community
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 193
Phase
Environmental
and social
issues
Mitigation measures Location Applied
standards
Cost for
mitigation
Agency being
responsible for
implementation
Agency being
responsible for
monitoring
diameter of 5 -
15 cm. The
remaining
mainly bare
land, bushes and
a small part of
growing crops
and rice about
0.077ha and
0.15ha of
sugarcane
3 Risks from
UXO
Ensure safety distance and
warnings for people during the
implementation in accordance
with QCV 01: 2012 / BQP-
National technical regulations
on clearance of unexplosive
ordnance and ordinance 02:
2008 / BCT- National
regulations on safety in
transporting, preserving, using
and destroying industrial
explosive materials
The entire
affected
subproject area
QCVN 01: 2012 /
BQP
QCVN 02: 2008 /
BCT
Circular 146/2007
/ TT-BQP
Cost for clearance
of UXO
Unit under
management of
Military Zone IV
PPMU
Construction stage
1 The general
environmental
and social
negative impacts
related to
construction
activities and
specific impacts
- Environmental Codes of
Practice (ECOP)
- Measures to mitigate
specific impacts
- Measures to minimize
impacts due to construction
water cut
- Measures to minimize
impacts due to gender
All affected
subproject areas
including
construction
sites, transport
routes and
borrow pit
Laws, decrees,
circulars and
current national
technical
regulations
A Guideline to the
Environment,
Health and Safety
of the World Bank
Included in
construction costs
Contractor PPMUs,
construction
supervision
consultant,
independent
monitoring
consultant of the
Central Project
Management
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 194
Phase
Environmental
and social
issues
Mitigation measures Location Applied
standards
Cost for
mitigation
Agency being
responsible for
implementation
Agency being
responsible for
monitoring
inequality and children
- Measures to minimize
impacts on ethnic minorities
Unit, Provincial
Department of
Natural
Resources and
Environment,
local
communities,
Operation stage
1 Risk of
drowning
- Equip warning signs and
installing dangerous warning
system at dams and reservoirs.
- Disseminate information on
the risk of drowning to the
community along the
reservoir.
Reservoir area Official Letter No.
5675 / BGDDT-
GDTC dated 30
November 2017
Operating cost of
the reservoir
Dam owner Department of
Agricultural and
Rural
Development
2 Repair and
maintenance
may lead to
lower
downstream
water level
- Inform people about the
annual repair and maintenance
plan.
- Perform periodic
maintenance and repair in the
short period and at the time of
the lowest water demand.
- Implement measures to
maintain water supply during
the repair process to ensure
that there is no disruption in
water supply.
Reservoir area
and downstream
area
Decree 114/2018 /
ND-CP
Operating cost of
the reservoir
Dam owner Department of
Agricultural and
Rural
Development
3 Regulating of
reservoir, flood
discharge in
case of super
flood affecting
downstream
- Prepare an emergency
response plan as part of the
dam safety report
- The management and
operation unit should promptly
and accurately announce the
flood discharge plan so that
Reservoir area
and downstream
area
Decree 114/2018 /
ND-CP
Operating cost of
the reservoir
Dam owner Department of
Agricultural and
Rural
Development
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 195
Phase
Environmental
and social
issues
Mitigation measures Location Applied
standards
Cost for
mitigation
Agency being
responsible for
implementation
Agency being
responsible for
monitoring
the community can take
initiative in grasping and
responding to the plan.
- By the time of unsafety such
as the rainy season, it needs to
be assigned persons regularly
monitoring to ensure proper
water regulation.
- Construct a safety corridor
for flood discharging on the
basis of scenario of forecasting
impact level; Specific
solutions are detailed in the
Dam Safety Report and
Emergency Response Plan.
4 Disaster risk
causes
insecurity
- The unit that manages the
operation of the reservoirs
regularly checks the safety of
reservoir
- Properly perform operation
procedures to ensure the safety
of the reservoir
- The management unit of the
reservoir works closely with
the Commune People's
Committee and the local
people to promptly report on
dam-related risks to timely
propose remedial action.
- People and local authorities
take initiative in community-
based disaster preparedness
planning
- Develop scenarios for
Reservoir area
and downstream
area
Decree 114/2018 /
ND-CP
Operating cost of
the reservoir
Dam owner Department of
Agricultural and
Rural
Development
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 196
Phase
Environmental
and social
issues
Mitigation measures Location Applied
standards
Cost for
mitigation
Agency being
responsible for
implementation
Agency being
responsible for
monitoring
forecasting the extent of
effects, options for migration,
solutions for life and property
of community in emergency
situations. Detailed contents
are included in the Dam Safety
Report and Subproject
Emergency Response Plan.
5 Increase in use
of fertilizers and
pesticides
Preparation and
implementation of integrated
pest management (IPM)
Sub-project area Law on Plant
Protection and
Quarantine
41/2013 / QH13
Decision No.
2027/2015 / QD-
BNN-BVTV
Cost for annual
IPM training in
locality
Division of
agriculture
extension of
commune and
district
Department of
Agricultural and
Rural
Development
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report environemental and Social impact assessment (ESIA) 197
CHAPTER VIII: COMMUNITY CONSULTATION AND INFORMATION DISCLOSURE
8.1. Purpose and method
455. In the process of environmental and social impact assessment, Public consultation and
information disclosure are conducted to ensure consensus of the local government, local non-
governmental organizations and affected communities in the subproject area. Community participation
is one of the basic conditions to ensure the support of the local government and community for the
project and to bring opinions and feedback into the report. Through community consultation, adverse
environmental and social impacts have not been identified and mitigation measures can be recorded
and included in the environmental and social impact assessment report. In fact, if the community
participates early in the project preparation process, the relationship between the community and the
project staff becomes closer. On that basis, the community can contribute valuable proposals to the
subproject.
8.1.1. Purpose of community consultation
456. The consultation with local authorities and affected people in the subproject area at the stage
of preparation and implementation of environmental management plan, Environment and Social
Impact Assessment Reports will provide necessary information to better understand the Subproject,
impacts of the implementation, and possible preventive and mitigation measures to the community and
the surrounding environment, specifically:
- Clarify the issues discussed at the beginning of the Subproject;
- Notify benefits to be gained when the Subproject is implemented;
- Point out responsibilities and awareness of the parties, beneficiary people in the subproject
area during the implementation;
- Encourage the community participation in identifying environmental impacts of the
Subproject.
- Gather information about the needs and responses of local people and local authorities
regarding the subproject construction and proposals to mitigate its environmental impacts or to
consider adjustments during the technical design.
- The World Bank's policy (OP/BP 4.01) on Environmental Assessment requires that affected
groups and local non-governmental organizations must receive notification and consultation
during the preparation of the social and environmental impact assessment.
457. The community consultation during the preparation of the ESIA report of Vinh Phuc Dam
Rehabilittion and Safety Improvement Subproject meets the World Bank's safeguard requirements and
the requirements of Decree No.18/2015/ND-CP dated 14/02/2015 of the Government and Circular
No.27/2015/TT-BTNMT dated 29/05/2015 of the Ministry of Natural Resources and Environment on
strategic environmental assessment, environment impact assessmentand environmental protection
plan.
458. The community consultation provides opportunities for affected people to participate in all
project implementation stages. Feedback from the consultations will be considered and incorporated
into the design of construction measures and mitigation measures of the Subproject. The consultation
will be conducted during the implementation process as a necessary condition to address arising issues
in the subproject implementation such as environmental and social impacts. The community
consultation includes the following groups:
• Representatives of villages/villages which may be affected;
• Representatives of affected households, communities living near the construction site which
may be affected;
• Representatives of People's Committees at all levels;
• Representatives of mass organizations, Women's Unions, Farmers’ Unions …
8.1.2. Principles of community consultation
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 198
459. Facilitate the participation of affected people and local authorities in the subproject area as
soon as possible;
460. Public consultation has conducted twice:
- First time: Shortly after the environmental screening is completed and before the TOR for the
ESIA is finalized.
- Second time: once the draft ESIA report is prepared.
461. Different methods and techniques are applied in the community consultations, consultations
with affected peoplein the subproject area, including:
- Community meetings
- Household surveys
462. Focus group discussions, field monitoring and interviews with key informants: The use of
these methods and techniques is intended to increase the reliability and validity of feedbacks from the
stakeholders, particularly affected people and ensure that (i) affected people get full information about
the Subproject; and (ii) all affected people are involved in the process of free consultation, prior
notification and full information during the preparation and implementation process
8.2. Consultation process
463. Phu Yen Dam Rehabilitation and Safety Improvement Subproject, according to the World
Bank’s policies (OP/BP 4.01) on environmental impact assessment, requires 02 times of community
consultations. The Environmental Consultant Unit has worked closely with the PPMU, local
authorities and communities in the affected area to conduct community consultation to meet the WB
requirements.
464. According to the preliminary design report of Phu Yen Dam Repairing and Improvement Sub-
project, including 8 reservoirs scattered in 7 communes of 6 districts. Prior to the consultations in each
commune and residential area, the PPMU organized joint meetings in the province and districts to
introduce and collect comments from DARD, DOC, DONRE, DPI, ... and the specialized departments
of Song Lo, Lap Thach, Tam Dao, and Phuc Yen about the Subproject.
465. At the consultation meeting in each commune, the Consultant introduced an overview of the
Subproject, identified residential areas/groups in the subproject area, collected information on
local environmental sanitation, discussed potential environmental impacts and mitigation
measures, developed and coordinated with the local authorities in the consultation in the
subproject areas. At the same time, the Consultant send written requests for consultations with
concerned agencies.
466. The effective participatory plan of consultation process was developed and implemented with
the participation of all affected people and stakeholders, which is an important part of the
Subproject. This process identified beneficiary and affected people. The Consultant applied
professional works and directly participated at site to collect information about community
feedback on the proposed subproject components during the implementation and monitoring.
During this period, community consultation meetings in 7 communes under the subproject were
organized with the following stakeholders:
- Representatives of local authorities from 7 communes/towns in the subproject area
- Departments and unions: Father Front, Women's Union, Youth’s Union, Farmer's Union;…
- Representatives of households in the subproject area, including those whose land is possibly
acquired and beneficiaries.
467. The contents which were consulted and exchanged:
- Introduction about the subproject items and components;
- Review of local socio-economic status;
- Current status of technical and social infrastructure in residential areas: electricity, roads,
schools, health stations; irrigation canal system,…
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 199
- Screening/evaluating potential impacts which likely occur in the subproject preparation,
construction and operation phases which may affect the environment, society, culture of local
people;
- Community consultation on mitigation measures.
468. The direct consultation process at the communities and in the commune/town people's
committees was held from 21-25/5/2018. The letters issued by Vinh Phuc PPMU were sent for local
authorities regarding the community consultation for the preparation of the social and environmental
impact assessment report.
469. In the process of completion of the Subproject’s the social and environmental impact
assessment report (ESIA), the PPMU sent letters to the CPCs to consult with the local authorities, the
Fatherland Front, mass organizations and local communities on the content of the ESIA.
8.2.1. Brief description of consultation process at commune/town level and mass organizations
470. Public consultations have been conducted in accordance with the guidelines of Circular No.
27/2015 / TT-BTNMT dated 29 May 2015 of the Ministry of Natural Resources and Environment and
the World Bank. The purpose of the consultation is to inform the community and the stakeholders
about the subproject, social and environmental impact aspects and mitigation measures of potential
negative impacts. The consultation activities are to ensure that opinions of affected community and
NGOs will be paid attention during the preparation and implementation process of the subproject.
471. Form of consultation: The project management board has organized a total of 8 community
consultation meetings in PMU of Phu Yen province and 7 communes of the subproject. The actual
time of the community consultation meetings is as follows:
Table 98: Time and location of consultation meetings
No. Place Consultation
time Number of participators
1 In PPMU of Phu Yen province 4/9/2018 6
2 Hoa Xuan Tay commune 4/9/2018 40
3 An Nghiep commune 5/9/2018 30
4 Xuan Phuoc commune 8/9/2018 30
5 Son Ha commune 9/9/2018 30
6 Son Dinh commune 10/9/2018 38
7 EaBar commune 6/9/2018 28
8 Hoa Tan Tay commune 7/9/2018 30
472. Participating in the consultations were representatives of local government and mass
organizations (Farmers' Union, Women's Union, Father Front, Youth’s Union), PPMU and
environmental and technical consultants.
473. The main contents of the consultation are: Introduction about the Subproject such as
objectives, locations, scale and plan of subproject implementation, technical design plans, and policies
related to environmental protection, compensation, assistance and land acquisition/resettlement by the
Government of Vietnam, the World Bank and the Subproject.
474. Phu Yen PPMU with the support of the Environmental, Resettlement Consultant consulted on
mitigation measures to the environment, the compensation and resettlement with the stakeholders,
including staff from the commune/town people's committees, leaders of the population groups and
local people in the affected area.
475. After the survey and consultancy, the Consultant Team had meeting with local authorities to
report all survey results. At the same time, the Consultant’s experts collected relevant information,
advantages and disadvantages, lessons learned and proposed measures for the resettlement plan and set
up monitoring indicators and continued implementation at the next stage.
476. The follow-up consultation was conducted during the completion of the Subproject’s
Environmental and Social Impact Assessment Report. The PPMU sent Official Letter No. 518 / GM-
BQL dated August 28, 2018 of PPMU letters to the People's Committees of the communes/towns to
ask for opinions of local authorities, mass organizations and local communities on the ESMP content.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 200
The report includes the designs of the works, the construction items, the scale, possible social and
environmental impacts as well as mitigation measures during the preparation, construction and
operation phases of 8 reservoir areas. After reading the CESMP report, the representatives of local
governments sent written response to the PPMU, highlighting the opinions of the local authorities,
unions and community about the impacts and measures relating to the environment and society
8.2.2. Summary of consultations with community directly affected by Subproject
477. After working with the People's Committees and the mass organizations at the commune/town
level relating to the community consultation, the People's Committees co-ordinated to convene
community-based consultation meetings for the people who are directly affected by the Subproject.
The participants in the meetings were as follows:
- Representatives of local authorities
- Representative of local Fatherland Front.
- Representatives of communities, households affected by the Subproject
- The representative of the Subproject Owner or consultancy agencies.
478. The community consultation meetings were conducted in the following order: the Subproject
Owner read the contents of the letters which were sent; present brief description of the Subproject and
its environmental and social impacts, including activities and proposed mitigation measures during
implementation; then the participants discussed and responded to questions and comments from
representatives of local authorities and local community on the issues related to the Subproject; the
community is consulted and actively participates in discussions about the need for development as
well as the sense and responsibility for the subproject objectives, they are advised on negative impacts
and measures to mitigate negative impacts and improve benefits; also local authorities and riverside
residents are advised on the agreement and commitment to the implementation of the resettlement
policy.
479. In addition to the consultation meetings, the Consultant undertook field surveys and
exchanged directly with people living around the reservoirs to collect information and consult their
comments on the issues related to environmental and social aspects during the subproject
implementation
8.3. Results of public consultation
480. After listening to the project representative, introduce the project scale, Technical plans of
each construction item, as well as the project's impact on the environment and propose impact
mitigation measures, Participants asked many questions as well as contributions to the project, Mainly
revolves around the issues presented in the following table.
Table 99: Summary of consultation results and project owner comments
No. The issues that people care about
Subproject
representative
answered
1 Hoa Xuan Tay Commune
1. Mr. Nguyen Duc Hung - Chairman of CPC:
- Agree with the implementation of the subproject. Agree with the
impacts and measures to minimize environmental impacts to the
locality.
- It is suggested that Ho Dong Khon needs to build a new culvert
to collect water, instead of opening and closing gates; Hon Dinh
Reservoir, the current irrigated area has been reduced due to
sedimentation, so it is recommended to add a dredging section.
Raise the aperture to get larger water in both reservoirs.
- The CPC will coordinate with the consultant to design the
location of disposal. Due to the large volume of waste disposal
and the households in the area, the villages will coordinate with
the contractor to ask for waste rock and soil to fill some areas in
− The subproject
will receive comments
and will discuss with
the FS consultant to
adjust the design plan
accordingly.
− The sub-
subproject will
coordinate closely
with the People's
Committee to ensure
that mitigation
measures are fully
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 201
No. The issues that people care about
Subproject
representative
answered
the commune.
- Currently the access road is muddy and difficult to walk. I hope
the subproject will soon be repaired to make traveling more
convenient. The construction should be informed in advance so
that the household can prepare and arrange travel, activities and
production.
- Care should be taken to ensure the safety of the subproject. The
commune recommends that the consultants and PPMU minimize
the impact on the rights and interests of the people. In case there
is, it is necessary to provide compensation plan to ensure the
rights of the people;
- Particularly, attention should be paid to ensuring environmental
sanitation of surrounding areas during the construction of the
subproject.
- When the construction unit comes to the commune area, it is
necessary to register temporary absence for workers
2. Mrs. Tran Thi Minh An – Commune official:
- Proposing the establishment of a community supervision board
to monitor and monitor the progress and quality of the
subproject
- It is recommended that investors cooperate closely with CPC,
organize additional community consultation sessions to
introduce and disseminate information, policies of TDA for
people to grasp.
- The subproject does not affect any households that only affect
the land under the Commune People's Committee, so it is very
convenient for the subproject implementation.
3. Mrs. Nguyen Thi Thu Van– Chairman of commune women's
union:
- When the sub-subproject is executed, the investor and contractor
can hire local workers, especially women to participate in jobs
suitable to their abilities.
implemented.
2 An Nghiep Commune
1. Mr. Chau Ngoc Quang - Vice Chairman of Commune
People's Committee:
- Agree with the implementation of the subproject. Agree with the
impacts and measures to minimize environmental impacts to the
locality.
- Operation routes need to install signs and signal lights. During
construction, there must be lights at night at the traffic
connection points.
- Workers who come to the locality need to register their
temporary absence and other necessary procedures.
- It is necessary to ensure full and serious implementation of
measures to minimize environmental and social impacts.
- The location of workers' camps in the reservoir area should be
paid attention in regard to safety, due to rain, flood and storm
impacts. Typically, in 2001, the material gathering yard
immediately downstream of the dam encountered a number due
to flooding.
- The alarm of the reservoir is currently located far away from the
residential area. Suggest moving near residential areas.
2. Mrs. Phan Thi Kim Oanh - Official of Phu Yen Provincial
Environmental Protection Department:
− The sub-
subproject will receive
comments and will
discuss with the FS
consultant to adjust
the design plan
accordingly.
− Note the safety,
environmental and
social requirements in
contracts for
contractors. And the
implementation of
mitigation measures
needs to be ensured.
− The investor will
pay attention to safety
issues of camps,
material gathering
yards at the
construction site.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 202
No. The issues that people care about
Subproject
representative
answered
- Agree with the implementation of the subproject. Agree with the
impacts and measures to minimize environmental impacts to the
locality
- Determine the impact belt if an incident occurs after construction
- Requirement to determine the location of disposal with the
locality
- Land mine: Request for mining license with People's Committee
of Phu Yen province
3. Mrs. Duong Thi Thanh - Chairman of commune women's
union:
- The Women's Union strongly supports the guidelines and
policies of the WB and the government has facilitated the local
subproject. Looking forward to an investor to create conditions for
some women to participate in the subproject activities.
4. Mr. Tran Van Nam - Commune official:
- Through preliminary grasp, about 6 households have permanent
land acquisition due to the subproject implementation. It is
recommended to have compensation and support policies for
these 6 households in accordance with the law. The CPC will
coordinate with the site clearance committee to fully implement
the obligations to modify the land changes for these 6
households.
- The consultant presented a mechanism for handling complaints,
complaints and policies of the Government of Vietnam and the
World Bank. CPC will disseminate this information in village
meetings.
5. Mr. Mai Van Hai - Head of The Hien hamlet:
- Representing the people in the subproject area proposed the
construction unit to comply with the mentioned environmental
protection measures.
- Need to compensate and support AHs according to the law
- The process of transporting materials should ensure no damage
to the construction
Avoid significant
incidents.
3 Son Ha Commune
1. Mr. Nguyen Manh Son - Chairman of CPC:
- Agree with the implementation of the subproject. Agree with the
impacts and measures to minimize environmental impacts to the
locality
- Very high evaluation of the subproject's positivity. Hopefully,
the sub-subproject will soon be deployed and ensure the
construction schedule for people to stabilize their lives soon.
- For environmental issues, the sub-subproject should ensure the
principles and rules in the construction process to maintain
environmental hygiene and social order and safety.
- It is recommended not to build in the rainy season, avoiding
unpredictable natural impacts. The contractor should work
closely with the CPC in managing workers and assets on site.
- Create conditions for local workers to participate in the
subproject.
- The commune has 2 villages with ethnic minorities but not
around the reservoir and the management road, so it does not
affect EM people
2. Mr. Dao Duy Linh - Head of Agriculture Department of
Son Hoa district:
− The sub-
subproject will receive
comments and will
discuss with the FS
consultant to adjust
the design plan
accordingly.
− Note the safety,
environmental and
social requirements in
contracts for
contractors. And the
implementation of
mitigation measures
needs to be ensured.
− The investor will
note the issue of
compensation, land
clearance and
especially the dam
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 203
No. The issues that people care about
Subproject
representative
answered
- The reservoir was built in 1986 and it was repaired in 2001 but
it still does not ensure the safety of the reservoir. Therefore, the
subproject brings huge benefits to the locality.
- It is recommended to adjust the upstream regulating sewer
design plan instead of downstream regulation; downstream of
the flood discharge spillway, there is one section that has not
been solidified, so it should be added.
- The dam was broken once in 1989 to warn the location to repair
it to ensure safety.
3. Mr. Le Thanh Tam - Official:
- The construction of management roads may affect agricultural
land of some households, suggesting a plan for compensation
according to law. Commune People's Committee will coordinate
with related parties to implement silt clearance and revise the
map.
4. Village head: Vo Huu Lan:
- Because the current road is a very muddy dirt road on a rainy
day, it is very difficult to travel, now the road improvement
subproject and reservoir improvement subproject are very
suitable for the people in the village. On behalf of the people
sincerely thank the subproject.
- Regarding construction environment issues, it is necessary to
give advance notice to the people on the construction time, the
time for transporting materials at rush hours.
location that happened
in 1989.
4 Ea Bar commune
1. Mr. Ksor Het– Chairman of CPC:
- Agree with the implementation of the subproject. Agree with the
impacts and measures to minimize environmental impacts to the
locality
- Observe the permissible load of construction vehicles to avoid
damaging roads and public facilities. Vehicles carrying
materials go through 2 residential clusters, suggest driving must
comply with regulations to ensure safety for people.
- Location of dumping, borrowing position must return the site
after construction.
- Flood spillway needs to build a digester to avoid landslides
- Below the downstream below 1km, the population is low, not
growing rice so it is not affected by the subproject.
- Ea Bar commune is a commune with a large number of ethnic
minority people, however, the area around the subproject is
mainly the land of the farm and commune people's committee.
On the other hand, the road for management and operation has
been widely solidified so there is no household affected by the
subproject. Very convenient for construction.
- The commune will establish a community supervision board to
coordinate with investors to monitor progress, quality and other
issues if discharged.
2. Mr. Dang Huu Phuong - Specialist of Song Hinh District
Agriculture office:
- Stone spillways have only degraded the new spillway
construction proposal.
- Limit vehicle loads to ensure no local road damage.
- Construction gas relates water to agricultural areas downstream.
Please pay attention.
− The subproject
would like to receive
comments and will
discuss with the FS
consultant to adjust
the design plan
accordingly.
− Note the safety,
environmental and
social requirements in
contracts for
contractors. And the
implementation of
mitigation measures
needs to be ensured. It
is very important to
revert to the landfill
and return the
borrowed land surface
after construction.
− The investor will
note the issue of
compensation, land
clearance and
especially the dam site
where the incident
occurred in 1989.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 204
No. The issues that people care about
Subproject
representative
answered
- Note that the PMU in the construction process should pay
attention to ensure the issues that may be affected such as
environmental sanitation, traffic safety, security and order in the
locality,…
3. Citizen: Hoang Thi Ha
- We fully support the subproject to ensure water supply for
agriculture.
- Ensure the transportation of materials does not cause damage to
roads
- Requirements when transporting materials should ensure traffic
safety with vehicles transporting materials of the farm.
- In the subproject area, there are 2 reservoirs, thus ensuring the
water supply for agriculture.
5 Phu Xuan Commune (Phu Xuan Reservoir)
Vice president of the commune:
- The reservoir was built in 1994, is of great importance to the local
socio-economic development, providing irrigation water for
about 500h of rice and other crops.
Some notes when implementing the subproject: calculating the
management and operation of flood discharge to avoid affecting
the downstream area with 250 households in Phuoc Nga village.
Each flood discharge has a number of land areas along the
stream that are eroded and eroded.
- There is a road going through the prison to the reservoir, 3.5 meters
wide according to the standard.
- Local needs to dredge dams due to long exploitation, much
sedimentation. In 2017, there is not enough irrigation water,
only meeting 500-600h / 1500ha of the commune.
Irrigation Management Station (reservoir management unit)
- The reservoir has legal documents on road management, so it
does not affect people's land when managing roads.
- Land mine: there is a yard about 2000m2 in the east of the
reservoir, the people invading the plantation can be recovered
(with legal documents)
- There are some households who arbitrarily open sewers to pump
water that are not yet managed because they are people in the
commune but not in the water supply contract.
- Having a subproject to make the road to Lam Dong (bridge +
road) have affected the flood discharge route of the reservoir is
narrowed, some households inside the newly constructed road
will be affected because there is only one area left for flood
discharge.
Citizen:
- When flooding, production land (5%) on both sides of the flow
is eroded
- The path does not affect people's land
- Support the subproject to have water for production, however, it
is necessary to calculate and process flood discharge
appropriately.
Vice Chairman of District People's Committee
- Very interested and support the subproject, contributing to the
local socio-economic development.
- If land in the area has to be compensated, it is recommended to
- The subproject does
not dredge the
reservoir, but only
concerns the safety of
the dam.
- The investor and the
consulting agency
receive and listen to
comments to complete
the dossier, and will
publish full
information on the
issue of land
acquisition (if any).
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 205
No. The issues that people care about
Subproject
representative
answered
have a suitable plan for people to agree
- It is recommended that the locality coordinate and fully inform
the subproject for the consent and support of the people. Listen
to the comments of the people to avoid the damage.
6 Hoa Tan Tay (Hoc Ram reservoir)
Chairman of CPC (Pham Van Linh)
- There is an access road to the dam base with a width of 3.0m +
0.5m on both sides without affecting land acquisition
- The reservoir has a beautiful landscape, many people visit and
admire the scenery
- The new open road from the dam base to the flood discharge
spill is about 16m going through the land of acacia planters,
eucalyptus,
- Reservoir provides an area of 118ha of water for 02 communes
of Hoa Tan Tay and Hoa Tan Dong.
- Desiring to make roads on both sides of the flood discharge to serve
sightseeing and tourist activities of the people.
Citizen
- Project support
- Desire to raise the overflow surface to increase the capacity to
irrigate the reservoir
- On the way to the dam / reservoir there was a bridge built long
ago because the people built it themselves and designed low
tonnage, easily collapsed if using large vehicles. It should be
noted so as not to affect the roads and bridges.
Reservoir management company
- Agree with the recommendations of the consulting unit and the
policy of the investor
- No impact on the lives of people, the implementation of the
subproject brings benefits to the local economic, social and
tourism development.
- There are no wildlife or conservation areas around the reservoir
District Cultural Office
- Tourism activities of the people are spontaneous, not licensed by
the most beautiful reservoirs, especially in the rainy season, the
landscape on the shore is as beautiful as a waterfall.
- Before clearance of 2m on both sides of the overflow coast,
about 300m long, it is desirable to be side by side to manage
and conveniently travel.
- The subproject
does not raise the
overflow surface but
only repairs according
to the design to
increase safety
- Receiving ideas
and having
compensation plan for
households to recover
land to make roads
from the dam to the
trumpet convenient for
management.
7 Son Dinh commune (Hoa Thuan reservoir)
Vice president of the commune:
- The province has written documents and communes have
received documents to withdraw from the subproject to assign
TH Company to exploit, upgrade and manage water supply for
TH's subproject. Local waiting for the final decision. In general,
reservoir improvement and renovation proposals support the
local socio-economic contribution.
- The road to the reservoir affects cassava cultivating land of
people on both sides (soil road, not yet concrete). If the
subproject is done, it will definitely take land to serve the
management road.
- There are no relics and conservation spots around the reservoir,
no graves
- The province has
sent a written notice to
the Ministry of
Agriculture and Rural
Development about
withdrawing from the
subproject, so it will
wait for official
comments and legal
documents
- Consultants and
investors still receive
local opinions while
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 206
No. The issues that people care about
Subproject
representative
answered
Citizen:
- Looking forward to new construction, raising the dam to
increase the water storage area, the reservoir is small, does not
guarantee irrigation water.
- Proposing a proper compensation policy for the recovered area
to serve the subproject
- Project support (if still implemented)
waiting for comments
on the decision to
invest in the
subproject or
withdraw from the list.
481. In addition, the recommendations of the people are
summarized in the table follow:
Table 100: Summary of consultations on environmental and social issues of affected households
No. The opinions of the people are consulted about the Environment and society
1 Son Ha Commune
- All 6 affected households agreed on the contents presented in the consultation meeting
about the negative impacts of the project on the natural environment, socio-economy and
public health during implementation subproject.
- All 6 AHs agree On measures to minimize negative impacts of the project on the natural
environment, socio-economy and community health.
- Proposing the project owner to strictly implement the mitigation measures mentioned in
Section 7.2 - Chapter of Mitigation Measures for this Report.
2 An Nghiep Commune
- All 6 affected households agreed on the contents presented in the consultation meeting
about the negative impacts of the project on the natural environment, socio-economy and
public health during implementation subproject.
- All 6 AHs agree On measures to minimize negative impacts of the project on the natural
environment, socio-economy and community health.
- Proposing the project owner to strictly implement the mitigation measures mentioned in
Section 7.2 - Chapter of Mitigation Measures for this Report.
3 Xuan Phuoc Commune
- All 4 affected households agreed on the contents presented in the consultation meeting
about the negative impacts of the project on the natural environment, socio-economy and
public health during implementation subproject.
- All 4 AHs agree On measures to minimize negative impacts of the project on the natural
environment, socio-economy and community health.
- Proposing the project owner to strictly implement the mitigation measures mentioned in
Section 7.2 - Chapter of Mitigation Measures for this Report.
4 Hoa Tan Tay Commune
- One affected households agreed on the contents presented in the consultation meeting
about the negative impacts of the project on the natural environment, socio-economy and
public health during implementation subproject.
- One AHs agree On measures to minimize negative impacts of the project on the natural
environment, socio-economy and community health.
- Proposing the project owner to strictly implement the mitigation measures mentioned in
Section 7.2 - Chapter of Mitigation Measures for this Report.
8.4. Feedback and commitment of the subProject Owner
- The subProject Owner receives comments and timely adjust in the document editing and well
implements measures to minimize negative impacts caused by subproject activities.
- The subProject Owner is responsible for damage to HHs and infrastructure of locality and
environmental pollution in compliance with regulations and policies of the World Bank and Viet Nam.
- The subProject Owner is responsible for regularly contacting with local authorities, preparing safety,
health and worker management plan.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 207
- The subProject Owner is responsible for traffic condition in the region.
- The subProject Owner has committed to cooperate with the People's Committee of the communes to
conduct diversion of water source for the households during the construction period. They Project
Owner is also responsible for compensation for the entire area which is not irrigated during the
construction process.
- The subProject Owner considers options for transport routes to avoid impacts on the people living in
the project area.
- The subProject Owner coordinates with the People's Committee to arrange sites for gathering materials
and dumping site and transport construction materials in suitable manner
8.5. Information Disclosure
482. In compliance with the World Bank policy on access to information and the current
regulations of the Government of Vietnam, the subproject’s objectives, description, and potential
impacts were disseminated to local people, NGOs and local authorities during subproject preparation.
The draft ESIA report in Vietnamese was sent to locally-affected people, local NGOs and local
authorities to study before conducting face-toface community consultation meetings. The final ESIA
report in Vietnamese will be disclosed on the project website, the website of Phu Yen Provincial
People's Committee and the subproject sites in an accessible place e.g., the People's Committee of
districts, communes and culture house village and hamlet culture and the English version of this ESIA
report will also be published on the World Bank website prior to subproject appraisal.
It was planned in July 2019, the final report on Environmental and Social Impact Assessment in
Vietnamese language will be published on the project website, and at the People's Committees of
communes in the subproject area to ensure accessible to locally-affected people and local non-
governmental organizations, and on the World Bank website in English before prior to subproject appraisal.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 208
CONCLUSIONS AND RECOMMENDATIONS
Conclusion
- (i). The subproject belongs to Category B according to the World Bank's environmental
safeguard policy, and is not located in the environmentally sensitive area and do not violate
any "inappropriate" criteria of the World Bank;
- (ii). The report has identified and adequately assessed the potential negative impacts in all
three phases of preparation, construction and operation. Simultaneously, mitigation measures,
in consultation with authorities and affected people, including vulnerable persons, have been
identified;
- (iii). When being implemented, the subproject of dam rehabilitation and safety improvement,
WB8 in Phu Yen province may cause negative effects during the construction phase.
However, because the scale of the construction items is not large and the effects occur in a
short time and the scope is limited in small areas, feasible and suitable mitigation measures
have been proposed proportionate to natural conditions, social and economic conditions,
management and construction conditions of the subproject.
- (iiii). The social and environmental management plan is established to monitor impacts which
helps project management levels and local authority frequently update the process of
implementing work items of the subproject; the monitoring system prepared and approved by
WB will be applied for the implementation of the subproject. The construction supervision
consultant frequently checks and prepare monthly report to submit to the PPMU. This report
will be separated from the environmental compliance report of the contractor. PPMU will
prepare semi-annual monitoring report basing on the reports prepared by CSC and contractor
to submit to CPMU.
Recommendations
- Basing on the findings of environmental impact assessment and the social-environmental
management plan outlined in this document, it is recommended that:
o The mitigation measures mentioned in the Environmental and Social Management
Plan will be established as an integral part of the request for proposal. The contractor
will separate the workload and set the total cost for the implementation of the
mitigation measures. The cost is considered as implementation cost of environmental
safeguard policy and will be paid when the mitigation measures are committed to
undertake by the contractor effectively.
o Basing on the Environmental and Social Impact Assessment report, the safeguard
policy consultant and the PMU recommend the competent authority and the World
Bank to appraise and approve the ESIA report of the Phu Yen WB8 sub-project to be
as the basis for implementing the next steps and to ensure the implementation
progress of the sub-project.
Subproject: dam rehabilitation and safety improvement (WB8) Phu Yen province
Report on Environemental and Social Impact Assessment (ESIA) 209
REFERENCES
1. Report on the status of urban waste water - MT Hanoi University of Technology, 2006;
2. Reports summarizing socio-economic situation, national defense, security, women's and ethnic
minority reports of the subproject communes;
3. Air environment, Pham Ngoc Dang, scientific and technical publisher, 1997;
4. DIN 4150-1: Vibrations in buildings - Part 1: Prediction of Vibration Parameters, DIN, 2001-06;
5. Environmental Assessment Sourcebook, Volume II, Sectoral Guidelines, Environment, World
Bank, Washington D.C 8/1991
6. Noise from Construction Equipment and Operations, Building Equipment, and Home Appliances,
US EPA, 1971;
7. WHO - Assessment of sources of air, water, and land pollution, A guide to rapid source inventory
techniques and their use in formulating environmental control strategies. Part 1: Rapid Inventory
Techniques in Environmental Pollution. Geneva, Switzerland, 1993.
8. Website of Phu Yen Department of Natural Resources and Environment
http://www.sotnmtphuyen.gov.vn/.
9. FS, DSR report of the subproject.
10. Report on geological explanations and hydrological reports.
11. Main report of the subproject.
12. Nguyen Van Nhung (editor), 1997: Map of potential soil erosion in Vietnam (the mainland ratio is
1: 1,000,000). Scientific reports. Institute of Geography, National Center for Natural Science and
Technology, Hanoi.
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