Annual Facility Inspection Report - DuPage County

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Transcript of Annual Facility Inspection Report - DuPage County

Annual Facility Inspection Report - Section A

Year 8 of NPDES Permit No. ILR400502 DuPage County, 2nd Notice of Intent (Year 2) No changes were made during this reporting year to the best management practices that were outlined in DuPage County’s Notice of Intent, dated 02/28/08, to obtain coverage under General NPDES Permit No. ILR40.

Annual Facility Inspection Report - Section BYear 8 of NPDES Permit No. ILR400502 DuPage County, 2nd Notice of Intent (Year 2)

A.1: Distribution of Paper Material

Date

Goals

Milestone

Summary

Continue to distribute brochures previously developed by the County. Create and distribute a list of companies providing service for native vegetation installation, monitoring and management. Provide informational training seminars to consultants, engineers and municipal representatives. Update and re-implement Adopt-a-Stream brochure. Distribute additional recreational brochures developed by the Forest Preserve District of DuPage County (FPDDC) that inform the public about using the natural resources in DuPage County for activities like hiking, fishing, and water activities. Update Stream Maintenance Program brochure. Create additional Water Quality brochures (e.g. IDDE). Create a DuPage County fact sheet that emphasizes stormwater management information. Continue production of quarterly stormwater newsletter, Currents. Distribute brochures on local water quality and conservation initiatives developed by others.

Develop water quality information to fit the needs of the Stormwater Management Program. Update stream maintenance program brochure. Create County fact sheet and produce quarterly issues of Currents.

2/1/2010Developed a brochure entitled 'Living On A Stream' to educate homeowners on best management practices and tips to protect their property value and the water quality of receiving streams.

9/25/2010Staffed a booth at the 2nd Annual Cantigny Green Fair to distribute handouts and brochures and answer questions on stormwater management and water quality.

3/31/2011Distributed brochures on Citizens Guide to Monitoring Stormwater, IDDE: Public Awareness, Car Wash & Pool Discharge Guidelines, A Homeowners Guide to Natural Areas Management, DuPage County Wetlands and Streams, and Streambank Stabilization.

3/31/2011Published three (3) issues of 'Currents,' a newsletter publication that updated residents on current activities of the Stormwater Management Division, provided education and tips on stormwater management and water quality, and provided links and updates on coming events.

3/31/2011Distributed Rain Barrel brochures and Rain Barrel Installation handouts at the kiosk/waiting area of Stormwater Management Division in the 421 County Complex Building.

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A.2: Speaking Engagement

Date

Goals

Milestone

Summary

Continue to participate and present relevant issues at the Environmental Summit. Continue to fund support for groups like S.C.A.R.C.E, The Conservation Foundation, and other organizations that sponsor conservation friendly activities. Continue to present at permitting workshops and other speaking engagements to educate the public. Continue to provide internal and external training opportunities. Continue to be a partner in other conservation activities.

Hire a Public Information Manager (PIM) who will seek speaking opportunities with local interest groups (such as local Rotary Clubs, Lyons Club, Homeowner’s Associations, etc.).

4/15/2009Hired Public Information Manager to manage education and outreach on stormwater management on behalf of the Stormwater Management Division.

5/25/2010Offered a free technical workshop entitled Spill Response and Stormwater Management Program Plans to learn how spills are handled in order to prevent pollution to our waterways and also how to develop a Stormwater Management Program Plan. Sixty (60) registrants attended the seminar.

10/12/2010Staff presented information on Salt Creek and flood operations at the Village of Oak Brook Board of Trustees Meeting.

11/18/2010Offered a free workshop on Best Management Practices: Effectiveness, Maintenance and Monitoring at the Morton Arboretum. Three (3) professional development hours were offered to attendees, who totaled ninety-two (92) individuals. The presentations focused on maintenance and monitoring of permeable pavers, rain gardens, native plants, bioretention systems, infiltration basins, grass swales, and structural best management practices.

1/5/2011Staff attended and displayed a booth at the Environmental Summit at Benedictine University. The theme was water conservation and staff presented on rainwater harvesting and also provided information on wetland mapping.

3/10/2011Two (2) staff members presented at the annual Illinois Association of Floodplain and Stormwater Management (IAFSM) state conference. One presentation was given on the topic of the Elmhurst Quarry and operation during recently past flood events, and the other was on watershed plan development in DuPage County.

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A.3: Public Service Announcement

Date

Goals

Milestone

Summary

Create a 30 second PSA that will inform residents about issues of disposing or dumping of waste into storm sewers.

Create and air a 30 second public service announcement.

5/12/2010Contracted with The Conservation Foundation for content topics and cost estimates for development of a 30 second public service announcement.

11/11/2010Partially funded the installation of outdoor, interpretive signage next to a 25,000 gallon rainwater harvesting system. The signage educates visitors on how rainwater harvesting works, why it is important, and why stormwater management is important in preserving aquatic resources within DuPage County.

3/31/2011Displayed four (4) billboards on Route 83 in Elmhurst as part of a water quality campaign with seasonal messages regarding stormwater. The messages used fish mascots created to promote water quality education and awareness.

A.4: Community Event

Date

Goals

Milestone

Summary

Continue support of an informational booth at The DuPage County Fair. Continue support of County supported events hosted by organizations like S.C.A.R.C.E, The Conservation Foundation, and groups that present a positive environmental message.

Participation by the Public Information Manager at local community events.

4/24/2010Staffed and presented a booth at the Naperville for Clean Energy and Conservation (NCEC) Earth Day Fair held at North Central College. Staff presented information in coordination with the Fair's theme of 'Bring Green to Your Home.' Topics covered included stormwater BMPs such as green roofs, rain gardens, rain barrels, and permeable pavers.

4/27/2010Partially funded the installation of a 25,000 gallon rainwater harvesting system, due to it being a model project for commercial scale rainwater harvesting. Ten (10) staff members attended a seminar, held by The Conservation Foundation during time of installation, to learn about the details and benefits of the project.

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5/8/2010Hosted Green Landscapes Day, which was attended by over 400 residents. One hundred and four (104) rain barrels and numerous native plants were sold. Additionally, 230 people participated in document shredding and recycling.

5/22/2010Partially funded and four (4) staff members participated in the 19th annual DuPage County River Sweep. 565 volunteers throughout 16 communities picked up 7.15 tons of trash and restored 4.11 acres of land. Restoration work included removal of buckthorn, hawthorn, garlic mustard, and other invasive plants.

6/3/2010Staffed a booth at the World Environment Day Celebration, which 256 County employees attended. Distributed thirty-four (34) Rain Barrel brochures and Rain Barrel Installation handouts.

7/17/2010Partially funded a native landscaping and rainwater harvesting workshop, which conveyed the beneficial uses of native landscaping, rain gardens, and rainwater harvesting. The 150 individuals in attendance were encouraged to pursue the workshop topics at their homes and places of employment.

7/21/2010Staffed an informational booth over the course of five (5) days at the DuPage County Fair. The booth covered the program areas of the Stormwater Management Division and provided hands-on learning opportunities for children and adults.

11/14/2010Partially funded a rainwater and renewable energy open house, with tours and lectures on rainwater harvesting and small-scale renewable energy. More than seventy-five (75) individuals attended the event.

3/10/2011Nine (9) staff members attended the annual Illinois Association of Floodplain and Stormwater Management (IAFSM) conference.

3/31/2011Funded educational workshops for teachers and in class education for students, which was implemented by the local nonprofit group SCARCE. Over the course of the year, SCARCE held thirty (30) community programs and presented six (6) community booths at fairs and events. SCARCE also taught two workshops on 'Green and Sustainable Design Building' for teachers, one 'Where is Away' workshop, one 'Shed Those Watershed Blues' workshop, one 'Where Does Our Water Come From and Where It Goes When We Are Done' workshop, two 'Groundwater Flow' workshops, and three 'Watershed Model' workshops.

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A.5: Classroom Education Material

Date

Goals

Milestone

Summary

Continue County support of teacher education programs utilizing a group like S.C.A.R.C.E. Continue to produce education materials for public and private uses.

Continue the development of education materials, and sponsorship of environmental clubs. Review and update classroom education materials as necessary.

3/31/2010Funded 'Envirothon,' which is a natural resource management competition open to high school students. Four (4) high schools represented DuPage County in the northeast regional competition, which educates students on local issues and solutions regarding wildlife, soils, forestry, and aquatics.

4/13/2010Funded the 2010 Sustainable Design Challenge, where 143 students learned the aspects of and participated in the design of model green buildings. Stormwater management topics covered in class and incorporated into the buildings included green roofs, rain barrels, native plants, permeable pavers, and rainwater harvesting.

A.6: Other Public Education

Date

Goals

Milestone

Summary

Creation of a Public Information Manager position, which will handle all public relations matters for Stormwater Management Division. Continued support of Conservation @ Home, which was developed by The Conservation Foundation. This program is an extension of our existing homeowner education and watershed protection efforts, and encourages and recognizes property owners that protect and/or create yards that are environmentally friendly and conserve water. This includes planting native vegetation, such as prairie and woodland wildflowers, trees and shrubs, create butterfly and rain gardens, and remove exotic species of plants. Implement a wetland classroom program with S.C.A.R.C.E.

Create a Public Information Manager position.

4/15/2009Hired Public Information Manager to manage education and outreach on stormwater management on behalf of the Division.

4/6/2010Commenced construction of the Urban Stream Research Center (USRC). The project, a cooperative effort between DuPage County Stormwater Management Division and Forest Preserve District of DuPage County, is intended to provide educational opportunities focusing on protecting and reestablishing aquatic organisms in urbanized waterways. The site design includes the use of permeable pavers in parking areas and bioswales and rain gardens for storage and treatment of stormwater runoff.

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3/31/2011Partially funded the Conservation@Home program. Thirty-seven (37) new residential properties within DuPage County were visited, as well as eleven (11) non-residential properties. Additionally, twenty-three (23) public presentations on Conservation@Home were made, reaching over 630 citizens at local civic, homeowner, and garden group meetings; colleges; and community meetings in the Village of Lisle, City of Wheaton, Village of Hinsdale, City of Glendale Heights, Village of Woodridge, City of Naperville, City of Elmhurst, City of Warrenville, and other municipalities. Conservation@Home was featured in displays at sixteen (16) environmental fairs.

3/31/2011Funded activities involving 241 volunteers posting 3,050 door hangers and stenciling 1,533 storm drains. These activities alerted residents of the direct connection between storm sewer inlets and local waterways and occurred in the following communities; Village of Carol Stream, Village of Downers Grove, Village of Hanover Park, City of Naperville, and City of Wheaton.

B.1: Public Panel

Date

Goals

Milestone

Summary

Continue support of Environmental Summit. Continue support of Environmental Commission.

Review and update public panel information.

4/29/2010Opened a public comment period for thirty (30) days for review of the Draft Environmental Assessment for the Churchill Woods Dam Removal Project. Comments were accepted through May 29, 2010.

5/19/2010Conducted public meeting, at Glen Ellyn City Hall, detailing the Churchill Woods Dam Modification and Wetland Restoration project. Project goals include increasing minimum dissolved oxygen concentrations and improving the aquatic life present in the East Branch DuPage River.

10/6/2010Opened a public comment period for thirty (30) days for review of the West Branch DuPage River Addendum. Comments were accepted through November 4, 2010.

10/6/2010Opened a public comment period for thirty (30) days for review of the Klein Creek Watershed Plan Addendum. Comments were accepted through November 4, 2010.

10/13/2010Held a public informational meeting for the draft Klein Creek Watershed Plan Addendum at Carol Stream Village Hall.

10/25/2010Held a public informational meeting for the draft West Branch DuPage River Watershed Plan Addendum at Warrenville City Hall.

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1/4/2011Opened a public comment period for sixty (60) days for the review of the modified DuPage County Countywide Stormwater and Flood Plain Ordinance. Comments were accepted through March 4, 2011.

3/7/2011Opened a public comment period for thirty (30) days for review of the Spring Brook Tributary to Salt Creek Interim Watershed Plan. Comments were accepted through April 5, 2011.

3/22/2011Held a public informational meeting for the draft Springbrook Tributary to Salt Creek Watershed Plan Addendum at the Bloomingdale Village Hall.

3/31/2011The Environmental Commission met monthly during the reporting period. The Commission serves as an advisory panel on environmental issues.

B.3: Stakeholder Meeting

Date

Goals

Milestone

Summary

Continued support of the Municipal Engineers Advisory Group and the DuPage County Water Quality Stakeholder Committee. Continued implementation of BMPs.

Continue support of the Municipal Engineers and Water Quality Stakeholders Groups.

3/31/2011Held monthly (12 total over the course of the year) Municipal Engineers Advisory Group meetings for local municipal staff to discuss stormwater management, application of the DuPage County Countywide Stormwater and Flood Plain Ordinance, and permit irregularities.

3/31/2011Participated in bimonthly meetings with other stakeholders in the DuPage River Salt Creek Workgroup. Topics covered included chloride usage education and reduction, green infrastructure legislation, TMDLs, and river bioassessments.

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B.4: Public Hearing

Date

Goals

Milestone

Summary

Hold Public hearings as necessary for any ordinance change, watershed plan, or variance to a given provision in the ordinance.

Continue to implement updates and review all amendments to appendices of the DuPage County Stormwater Management Plan. Hold public hearings as necessary for any ordinance changes, watershed plan development or addendum, or variance request.

3/31/2011No public hearings were required for activities during the reporting period.

B.5: Volunteer Monitoring

Date

Goals

Milestone

Summary

The C.A.R.E group will select appropriate sites in all impaired watersheds throughout DuPage County and conduct training through The Conservation Foundation and Chicago Wilderness to make data available through the IDNR INRIN database. This database will hopefully be used to draw correlations and trends on the improvements to the impaired watersheds in DuPage.

Continue support for volunteer monitoring opportunities.

5/1/2010Funded the DuPage River Citizen Assessing Regional Ecosystems (CARE) monitoring program, which operated from May 1, 2010 through June 30th, 2010, and monitored four (4) sites. This activity is part of the Riverwatch Citizen Scientist Program and run by the National Great Rivers Research and Education Center.

2/9/2011Purchased two (2) multi-parameter surface water test kits, which allow interested parties to perform water quality analysis along DuPage County waterways for the following parameters; ammonia, chlorine, nitrate, dissolved oxygen, pH, phosphorus, and temperature.

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B.6: Program Coordination

Date

Goals

Milestone

Summary

Creation of a Public Information Manager position (PIM). This position will be responsible for program coordination as well as lead contact for public education and outreach opportunities.

Creation of Public Information Manager position.

4/15/2009Hired Public Information Manager to manage education and outreach on stormwater management on behalf of the Division.

3/31/2011Coordinated with The Conservation Foundation and SCARCE to provide public education and outreach to DuPage County residents.

B.7: Other Public Involvement

Date

Goals

Milestone

Summary

Within the last few years, DuPage County has received several requests to participate in projects where the goal was to improve water quality, but streambank stabilization was not necessarily the desired solution. Such projects include wetland creation, storm sewer day lighting, and in-stream animal habitat enhancement. In order to encourage the implementation of similar projects in the future, the County found it necessary to expand the only program that addressed water quality concerns, the Streambank Stabilization Program, into the Water Quality Improvement Program.

Continue support for programs while also reviewing potential public involvement programs and their feasibility.

4/6/2010Initiated partial funding contracts for five water quality improvement projects through the County's 2010 Water Quality Improvement Program grant funding. The water quality projects funded consisted of green infrastructure and water quality improvements such as streambank stabilization, construction of bioswales, rain gardens, and permeable pavers. The recipients of the grant funds, totaling $300,000, were Cantigny Foundation, Village of Downers Grove, Village of Villa Park, Naperville Heritage Society, and Intrepid Properties, Inc. The water quality improvement best management practices funded exceeded any measures required by the DuPage County Countywide Stormwater and Flood Plain Ordinance.

4/22/2010Partially funded the annual Countywide River Sweep where over 560 volunteers participated and retrieved 5.37 tons of garbage and debris from over 39.85 miles of river.

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6/8/2010Sponsored a four-day wetland identification class with classroom and field instruction. Twenty-five (25) people attended the course each day.

3/1/2011Recommended for funding, via the Stormwater Management Planning Committee, four (4) projects through the 2011 Water Quality Improvement Grant Program. The recipients of the 2011 Water Quality Improvement Program grants were Naperville Park District, Carol Stream Park District, Seton Montessori School, and DuPage County (Facilities Management Division). The improvements range from the installation of permeable paver parking lots; wetland habitat restoration; establishment of native plantings; various green infrastructure improvements, such as rain gardens, semi-intensive green roof, infiltration zones, and native landscape restoration; and a permeable paver entrance driveway and turn around-area. The water quality improvement best management practices funded exceeded any measures required by the DuPage County Countywide Stormwater and Flood Plain Ordinance.

C.1: Storm Sewer Map Preparation

Date

Goals

Milestone

Summary

As the monitoring portion of the illicit discharge detection and elimination program begins DuPage County staff will verify the accuracy of the outfall database created during the first five years. A measurable goal for this BMP will be how many updates are received from the cooperating permit holders. The success of the original outfall mapping effort will be measured by how many outfalls were incorrectly included in the database and how many others are found that were not identified during the first permit cycle.

Incorporate new outfall and storm sewer information into the GIS database. Field inspectors will continue to verify the locations and attribute information of the outfalls within the GIS database.

11/29/2010Received the most current electronic version of the Village of Bartlett's storm sewer atlas.

12/7/2010Received the most current electronic version of the Village of Warrenville's storm sewer atlas.

2/15/2011Received the most current electronic version of the Village of Carol Stream's storm sewer atlas.

3/31/2011436 previously un-catalogued outfalls were added to the outfall database based on outfall screening monitoring that was conducted during the 2010 efforts. Of those, 162 are four inches or less in diameter, a size indicative of sump pump outfalls, which generally convey discharges authorized by General NPDES Permit No. ILR40.

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C.2: Regulatory Control Program

Date

Goals

Milestone

Summary

The success of this BMP will be measured by the number of outfalls that are identified and fixed, the success of the collaboration efforts between DuPage County and the cooperating permit holders, and the IDDE ordinance withstanding any legal challenges. DuPage County will revise the ordinance as needed.

Review the effectiveness of the program by evaluating how well the cooperating permit holders have communicated and exchanged information.

5/26/2009The DuPage County Illicit Discharge Detection and Elimination (IDDE) Ordinance was enacted by DuPage County Board and adopted into Appendix E of the DuPage County Watershed Management Plan. The IDDE Ordinance applies to unincorporated areas of DuPage County.

4/13/2010Completed IGA with the City of West Chicago, which is engaged as a full participant in DuPage County's IDDE plan. West Chicago also amended Section 14, Pollution Control and Environmental Protection, of the City of West Chicago Code of Ordinances.

4/13/2010Completed IGA with the Village of Bensenville, which is engaged as a full participant in DuPage County's IDDE plan. Bensenville also adopted Ordinance No. 7-2010, which adopts County Ordinance No. OSM-002-09 by reference.

5/11/2010Completed IGA with the Village of Roselle, which is engaged as a full participant in DuPage County's IDDE plan. Roselle also adopted the Village of Roselle Illicit Discharge Detection Ordinance.

6/8/2010Completed IGA with the City of Wood Dale, which is engaged as a full participant in DuPage County's IDDE plan. Wood Dale also adopted provisions of the DuPage County Illicit Discharge Detection and Elimination Ordinance as an amendment to the Wood Dale Stormwater and Floodplain Management Ordinance.

7/13/2010Completed IGA with the Village of Hinsdale, which is engaged as a full participant in DuPage County's IDDE plan. Hinsdale also adopted Ordinance No. O2010-28, an Ordinance adding a new Article I (Illicit Discharge Detection and Elimination) to Chapter 4 (Waterworks and Sewerage System), Title 7 (Public Ways and Properties) of the Village Code of Hinsdale.

9/14/2010Completed IGA with the City of Wheaton, which is engaged as a full participant in DuPage County's IDDE plan. Wheaton also adopted Ordinance No. F- an Ordinance amending Chapter 34 "Floodplains, Stormwater Runoff and Erosion Control" of the Wheaton City Code.

9/14/2010Completed IGA with the Village of Bartlett, which is engaged as a full participant in DuPage County's IDDE plan. Bartlett also adopted the Bartlett Illicit Discharge Detection and Elimination Ordinance pursuant to its statutory home rule powers.

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12/21/2010Completed IGA with the Village of Winfield, which is engaged as a full participant in DuPage County's IDDE plan. Winfield also adopted an Illicit Discharge Detection and Elimination Ordinance (8/27/2009).

12/21/2010Completed IGA with the Village of Downers Grove, which is engaged as a full participant in DuPage County's IDDE plan.

2/8/2011Completed IGA with the Village of Itasca, which is engaged as a full participant in DuPage County's IDDE plan. Itasca also adopted an Illicit Discharge Detection and Elimination Ordinance (8/17/2010).

3/31/2011Thirty one of 32 partnering municipalities have adopted IDDE ordinances and entered into agreements with DuPage County as a full participant of Stormwater Management's IDDE program.

C.3: Detection/Elimination Prioritization Plan

Date

Goals

Milestone

Summary

The success of the prioritization plan will be measured by the number of illicit discharges that are detected. The point of the prioritization plan is to anticipate the areas in which one would expect to see the highest number of illicit discharges. The detection plan should help locate the major illicit discharges present within the system. The number of outfalls screened will be recorded and all information obtained during the screening process will be documented in the GIS database.

Priority outfalls will continue to be monitored.

11/30/2009Finalized the Illicit Discharge Detection and Elimination (IDDE) Program Technical Guidance document. The Technical Guidance document highlights procedures for outfall screening and prioritization, investigation procedures, as well as procedures for disconnection of identified illicit discharges.

2/10/2011Partnered with the DuPage River Salt Creek Workgroup and Illinois Environmental Protection Agency to develop a sanitary sewer/septic field data layer for a pilot-project area, located in northwest DuPage County. Produced information can be used in calculating illicit discharge risk factor values, as outlined in the DuPage County IDDE Program Technical Guidance document. Related factors include density of existing septic systems, septic to sanitary sewer conversion, and condition of sanitary sewer.

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C.4: Illicit Discharge Tracing Procedures

Date

Goals

Milestone

Summary

The effectiveness of the tracing procedures developed by DuPage County will be reviewed throughout the permit cycle. As illicit discharges are discovered, County staff will perform an annual review on all the illicit discharges located and determine what methods have been the most successful. The tracing procedures will be subject to modification if one procedure shows to be a substantially more effective means of locating a discharge. DuPage County will record the number of discharges traced and the methods used to locate each discharge.

Continue tracing any illicit discharges detected. Make recommendations as to which tracing methods have proven to be the most effective.

3/31/2010The DuPage County IDDE Program Technical Guidance document was completed and incorporated into the IDDE plan by Stormwater Management staff.

3/9/2011Initiated exploring laboratory methods to identify which analytical procedures work best to identify unknown pollutants. The initial method requested from the laboratory was volatiles analysis with library search; however, no compounds were detected in the suspected illicit discharge sample.

C.5: Illicit Source Removal Procedures

Date

Goals

Milestone

Summary

DuPage County staff will measure the success of this BMP by reviewing how many illicit discharges were detected, discovered, and subsequently removed. If there are instances where an illicit discharge was detected but the permit holder was not legally able to remove that discharge the removal procedure process will have to be modified. DuPage County will continually review the most effective removal procedures and convey this information to the cooperating permit holders.

Continue tracing any illicit discharges detected. Make recommendations as to which tracing methods have proved the most effective. Review the status of all illicit discharges discovered. Enforce the removal of illicit discharges.

11/3/2009An illicit discharge hotline was established. Citizens within DuPage County can call the 24-hour hotline (630-407-6796) to report known or suspected illicit discharges. These discharges are investigated as soon as possible after the call is received, which is typically the same or next business day. Illicit discharges can also be reported via email at [email protected].

5/27/2010Investigated the illicit discharge of a water-based adhesive into a Carol Stream storm sewer inlet, discharging into a detention pond. The commercial entity responsible for the accidental discharge initiated steps to remove any pollutant and prevent a similar dumping incident in the future, including employee training on proper waste disposal measures and signage on doors and equipment.

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6/17/2010Investigated the illicit discharge of decanted waste into Crabtree Creek. Municipal staff mistakenly released the sediment laden water, derived from hydroexcavation around two fire hydrants, into an inlet adjacent to the creek. The municipality responsible for the accidental discharge initiated steps to remove any pollutant and prevent a similar dumping incident in the future, including employee training on proper waste disposal measures and removal or stabilization of the sediment in and around the inlet.

7/9/2010Investigated a fish kill that occurred at an online retention pond along an unnamed tributary to the West Branch DuPage River in Roselle. Weather, specifically a long period of warm temperatures followed by cool rain, was suspected to be the cause of the fish kill.

7/12/2010Investigated a fish kill that occurred at an online retention pond at Westlake Park, along the East Branch DuPage River, in Bloomingdale. Weather, specifically a long period of warm temperatures followed by cool rain, was suspected to be the cause of the fish kill.

9/29/2010Investigated a suspected illicit discharge into the West Branch DuPage River in Naperville. As there were elevated concentrations of chlorine present in the discharge, City of Naperville staff traced the discharge to and corrected a broken potable water pipe in the area.

10/28/2010Investigated a suspected illicit discharge into a portion of Kress Creek in unincorporated DuPage County. The foaming reported by the concerned resident appeared to be a result of water being agitated as it passed over rocks within the stream channel. This foaming phenomenon is comment along the West Branch DuPage River and its tributaries.

11/5/2010Investigated discoloration and odor noticed along Spring Brook #1, as reported by a Wheaton resident. No noticeable pollutants were identified upon arrival. The City of Wheaton and Wheaton Sanitary District were involved in the investigation, as well.

2/14/2011Partnered with the City of Elmhurst to initiate investigation of a suspected illicit discharge into an unnamed tributary to Addison Creek. The intermittent discharge results in an oily substance on the surface of the water.

3/10/2011Investigated a fish kill at a retention pond adjacent to the East Branch DuPage River in Glen Ellyn. Weather, specifically a long period of snow and ice covering the pond, was suspected to be the cause of the fish kill.

3/18/2011Coordinated communication between the Forest Preserve District of DuPage County, Village of Roselle, and IEPA regarding a suspected illicit discharge Metra discharge into Spring Brook, a tributary to Salt Creek. Village of Roselle staff traced the discharge to a nearby Metra facility.

3/29/2011Mailed twenty-seven (27) letters and informational magnets to businesses whose property is adjacent to storm sewer inlets that eventually discharge to an unnamed tributary to Addison Creek.

3/30/2011Mailed seven (7) letters and informational magnets to businesses whose property is adjacent to an unnamed tributary to Kress Creek, where a orange discoloration was observed in the water.

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C.6: Program Evaluation and Assessment

Date

Goals

Milestone

Summary

The success of this BMP will be measured by the number of reviews performed. If the program is successful, and there are no recommendations calling for any changes to the program, this step will have afforded staff the opportunity to learn from the successes of the program. The IEPA will include a synopsis of the program changes recommended as part of the annual review.

Review year one of the IDDE program and report the results to the Stormwater Management Committee.

7/21/2009Implemented monitoring plan utilizing United States Geological Survey's National Hydrography Dataset (NHD 1:100,000 scale), as is used by Illinois Environmental Protection Agency (IEPA) for development of §303(d) impaired waters list. Monitoring plan revision was necessary because many of the areas defined as Primary DuPage County IDDE Waterways were either not discernable during dry-weather conditions or confined in pipes underground.

5/25/2010Funded and hosted a training seminar entitled "Spill Response and Stormwater Management Program Plans (SMPP)." Presentations included The Basics of Hazardous Materials Response, Hazardous Materials Response, Creating a SMPP for Your MS4, and a SMPP Case Study. Sixty (60) individuals were in attendance.

7/6/2010Presented a staff report regarding illicit discharge detection successes throughout DuPage County to the Stormwater Management Planning Committee.

3/31/2011IDDE screening is now bring performed along shallow tributaries, meaning that it is more difficult to carry sampling equipment while wading long distances in a steam that is often difficult to navigate. In the past, when monitoring deeper streams, a canoe was utilized to carry equipment. Evaluation of whether additional staff can be utilized to respond to specific discharging outfalls is in progress.

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C.7: Visual Dry Weather Screening

Date

Goals

Milestone

Summary

DuPage County will keep track of all MS4 outfalls that have been monitored during dry weather. The dry weather screening program will evolve as problem areas are discovered. The eventual goal is to visit all MS4 outfalls within DuPage County.

Continue to dry weather screen throughout the year.

5/24/2010Initiated 2010 dry-weather screening within Winfield, Milton, and York Townships. Streams within Addison Township that had not yet been monitored were assessed for outfall, as well.

10/20/2010Completed monitoring activities for the 2010 season. Staff located a total of 643 outfalls along thirty-one (31) river miles of stream, including the following waterways; Bensenville Ditch, unnamed tributary to Willow Creek, Tributary #2 (EBDR), Lacey Creek, 22nd Street Ditch, Willoway Brook, Oak Brook Tributary, Sugar Creek, Klein Creek, Kress Creek, Spring Brook #1 (WBDR), Winfield Creek, and Glen Crest Creek.

C.8: Pollutant Field Testing

Date

Goals

Milestone

Summary

Once dry weather flow has been tested for pollutants a decision will be made as to what further action should be taken. The pollutant field testing portion of the program will be set up so that tracing efforts are undertaken only when certain trigger levels are met. The trigger levels will be open to change as the program develops. This BMP will be measured by the number of illicit discharges that are located after testing has been done. If field testing continually results in DuPage County staff investigating the storm sewer system but never finding the source of the discharge, the levels will have to be modified.

Continue to test for pollutants during the dry weather survey.

3/31/2011Conducted field testing of outfalls when visual inspection warranted. Limitations of analysis are described under Best Management Practice C.6: Program Evaluation and Assessment.

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D.1: Regulatory Control Program

Date

Goals

Milestone

Summary

The Stormwater Ordinance was revised in February 2006 to reflect changes to the sediment and erosion control provisions. However, updating Technical Guidance Appendix E was not completed due to lack of staffing and lack of funds. Updating Appendix E will resume in the new permit, beginning with the inclusion of the DuPage County Water Quality Best Management Practices Technical Manual (BMP Manual).

Adopt updated Stormwater Ordinance to implement changes that incorporate the DuPage County Water Quality Best Management Practices Technical Manual (BMP Manual). The County would also like to increase education and training for staff and municipalities in order to promote consistent and effective regulations throughout the County.

3/25/2008The revised DuPage County Countywide Stormwater and Flood Plain Ordinance was adopted by the County Board. The revised Ordinance contains erosion and sediment control requirements for construction activities.

D.2: Erosion and Sediment Control BMPs

Date

Goals

Milestone

Summary

Updating Appendix E to include the BMP Manual was not completed during the previous permit, however the BMP Manual will be completed and adopted into Appendix E during this permit period.

The County would like to conduct a series of presentations and seminars that would educate and guide the municipalities within DuPage County on how to regulate the BMP Manual. This would ensure the BMP Manual would be regulated consistently Countywide. Ensure staff has professional ability and appropriate certifications (when necessary) to review and inspect the guidelines of the BMP Manual.

3/25/2008Adoption of the Water Quality Best Management Practices Technical Guidance. The Water Quality Best Management Practices Technical Guidance, which was incorporated into Appendix E- Technical Guidance for the DuPage Countywide Stormwater and Flood Plain Ordinance at the same time that the Ordinance was revised, promotes avoidance and minimization for construction activities.

Tuesday, May 31, 2011 Page 17 of 35

D.4: Site Plan and Review Procedures

Date

Goals

Milestone

Summary

DuPage County has developed and maintained a successful regulatory permitting program and will continue to implement and update the program as necessary. Monthly meetings with a group of Countywide Stormwater Administrators (Municipal Engineers) to discuss ordinance related issues ensures the Stormwater Ordinance is implemented consistently, fairly and effectively throughout the County. The Municipal Engineers group will continue to meet during the next permit period.

Adopt updated DuPage County Countywide Stormwater and Flood Plain Ordinance to implement changes that incorporate the Water Quality Best Management Practices Technical Guidance manual.

3/31/2011Reviewed one (1) special management area construction permit submittal on behalf of the City of Oakbrook Terrace.

3/31/2011Reviewed two (2) special management area construction permit submittals on behalf of the Village of Burr Ridge.

3/31/2011Reviewed three (3) special management area construction permit submittals on behalf of the Village of Itasca.

3/31/2011Reviewed six (6) special management area construction permit submittals on behalf of the City of Elmhurst.

3/31/2011Reviewed one (1) special management area construction permit submittal on behalf of the Village of Carol Stream.

3/31/2011Reviewed one (1) special management area construction permit submittal on behalf of the City of Chicago.

3/31/2011Reviewed three (3) special management area construction permit submittals on behalf of Elk Grove Village.

3/31/2011Reviewed three (3) special management area construction permit submittals on behalf of the Village of Lombard.

3/31/2011Reviewed one (1) special management area construction permit submittal on behalf of Wayne Township.

3/31/2011Reviewed one (1) special management area construction permit submittal on behalf of Naperville Township.

3/31/2011Reviewed forty-seven (47) special management area construction permit submittals for projects located within unincorporated DuPage County, including ten (10) for Forest Preserve District of DuPage County projects and two (2) for DuPage County Division of Transportation projects.

Tuesday, May 31, 2011 Page 18 of 35

3/31/2011Reviewed three (3) special management area construction permit submittals on behalf of the City of Darien.

3/31/2011Reviewed fifteen (15) special management area construction permit submittals on behalf of the Village of Lisle.

3/31/2011Reviewed two (2) special management area construction permit submittals on behalf of the Village of Clarendon Hills.

3/31/2011Reviewed sixteen (16) special management area construction permit submittals on behalf of the City of West Chicago.

3/31/2011Reviewed five (5) special management area construction permit submittals on behalf of the Village of Wheaton.

3/31/2011Reviewed three (3) special management area construction permit submittals on behalf of the Village of Winfield.

3/31/2011Reviewed seventeen (17) special management area construction permit submittals on behalf of the City of Naperville.

3/31/2011Reviewed one (1) special management area construction permit submittal on behalf of the Village of Woodridge.

3/31/2011Reviewed three (3) special management area construction permit submittals on behalf of the Village of Westmont.

3/31/2011Reviewed seven (7) special management area construction permit submittals for projects that crossed municipal boundaries.

3/31/2011Reviewed two (2) special management area construction permit submittals on behalf of the Village of Wayne.

3/31/2011Reviewed two (2) special management area construction permit submittals on behalf of the Village of Bartlett.

3/31/2011Reviewed two (2) special management area construction permit submittals on behalf of the Village of Downers Grove.

Tuesday, May 31, 2011 Page 19 of 35

D.5: Public Information Handling Procedures

Date

Goals

Milestone

Summary

Continue to improve and update the Public Outreach Program by integrating new programs and tools to aide the public with knowledge and understanding County Policy and services.

Adopt updated the DuPage County Countywide Stormwater and Flood Plain Ordinance to implement changes that incorporate the Water Quality Best Management Practices Technical Guidance manual. Continue to field public concerns about proposed developments and implement their concerns in the Stormwater Permit review of the proposed development. Continue to update County website with on-going activities and policies.

5/19/2010Hosted public meeting, at Glen Ellyn City Hall, detailing the construction aspects of the Churchill Woods Dam Modification and Wetland Restoration project. Project goals include increasing minimum dissolved oxygen concentrations and improving the aquatic life present in the East Branch DuPage River.

10/8/2010Posted signage at two (2) locations within the Churchill Woods Forest Preserve outlining the project details and benefits of the Churchill Woods Dam Modification and Wetland Restoration project.

11/24/2010Submitted, to IEPA, the Notice of Intent (NOI) for General Permit to Discharge Storm Water Associated with Construction Site Activities for the Sheriff's Tactical Training and Impound Lot project. An electronic version of the NOI was posted to DuPage County's website, as well.

3/31/2011Conducted approximately one hundred and thirty-three (133) pre-application meetings with potential permit applicants to discuss both construction and post-construction impacts and requirements associated with a project.

3/31/2011Staffed call center to process and direct citizen complaints pertaining to construction activities and other stormwater related issues.

3/31/2011Published descriptions of construction projects undertaken by DuPage County, including ILR10 Notices of Intent (NOIs) for those greater than one acre in size, on the County website.

Tuesday, May 31, 2011 Page 20 of 35

D.6: Site Inspection/Enforcement Procedures

Date

Goals

Milestone

Summary

DuPage County has implemented the Govern program to ensure all development and projects have acquired the necessary permits.

Ensure staff has proper qualifications to conduct site inspections with respect to sediment and erosion control. Continue to offer employee training on site inspections.

5/25/2010Three (3) staff members attended a one-day workshop, hosted by Illinois Association for Floodplain and Stormwater Management (IAFSM), focusing on construction erosion control, post-construction BMPs, and illicit discharge detection.

3/31/2011Engaged in efforts to plan, organize, and coordinate a free technical workshop for construction site inspectors and other interested parties focusing on conducting sediment and erosion control inspections.

3/31/2011Initiated enforcement actions for nineteen (19) construction projects located within unincorporated DuPage County, as documented in the inspection database, for sediment and erosion control issues.

3/31/2011Conducted erosion control inspections for one hundred and ninety-three (193) projects located within unincorporated DuPage County, as documented in the inspection database. Inspection is required prior to any excavation or movement of soil. Additionally, all erosion control measures indicated on approved grading plans must be in place and maintained until final grading approval.

3/31/2011Submitted zero (0) Incidence of Noncompliance (ION) reports for activities pertaining to County construction projects disturbing greater than one acre.

Tuesday, May 31, 2011 Page 21 of 35

E.2: Regulatory Control Program

Date

Goals

Milestone

Summary

Continuing to regulate the Stormwater Ordinance will reduce post construction runoff pollutants. Implementing and regulating the BMP Manual will reduce post construction runoff pollutants and will ensure discharge from developed sites will be treated.

DuPage County will offer staff training opportunities where they will be able to review and learn new methods of their evolving fields.

6/9/2009Overhaul of the DuPage County Countywide Stormwater and Flood Plain Ordinance commenced. Major improvements include promotion of pervious area and capture of a first-flush water control volume.

8/3/2010Issued a contract for the preparation of a design guidance document for below grade stormwater detention and retention in coarse aggregate void spaces such as permeable paver designs. This design guidance was requested by stormwater permit applicants, consultants, and municipal engineers to affirm that below grade stormwater detention and retention in coarse aggregate can be implemented efficiently and fairly throughout the County.

9/14/2010Initiated a contract for the independent audit of municipalities to determine compliance with the DuPage County Countywide Stormwater and Flood Plain Ordinance. The contract scope of services includes the documentation of preliminary findings and a final summary report of findings. Communities audited under this contract included Village of Villa Park, Village of Downers Grove, and City of West Chicago.

1/1/2011Initiated a second contract for the independent audit of municipalities to determine compliance with the DuPage County Countywide Stormwater and Flood Plain Ordinance. The contract scope of services includes the documentation of preliminary findings and a final summary report of findings. Communities audited under this contract included Village of Lombard, Village of Downers Grove, and City of West Chicago.

Tuesday, May 31, 2011 Page 22 of 35

E.3: Long Term O&M Procedures

Date

Goals

Milestone

Summary

Currently, the Stormwater Ordinance requires all major and minor Stormwater facilities be put into an Easement that has a three to five year maintenance and monitoring period. The revision and update to the Stormwater Ordinance to include the BMP updates will require all BMPs be put into an Easement. All permanent BMPs on a proposed plan will have to include a maintenance and monitoring plan for the BMPs.

Continue to enforce the DuPage County Countywide Stormwater and Flood Plain Ordinance.

5/13/2010Commenced sonde water quality ambient monitoring at three (3) locations. Two sites along the West Branch DuPage River (Butterfield Road and the McDowell Grove Forest Preserve) and one site along the East Branch DuPage River (Hidden Lake) were selected to observe if dam removal and restoration projects in the area improved dissolved oxygen concentrations. Specific conductance, pH, temperature, and dissolved oxygen readings are taken every fifteen minutes.

11/18/2010Hosted, with assistance from The Conservation Foundation, a Best Management Practices Effectiveness, Maintenance and Monitoring workshop. Ninety-two (92) attendees were present at the Morton Arboretum for this training workshop. The presentations focused on maintenance and monitoring of permeable pavers, rain gardens, native plants, bioretention systems, infiltration basins, grass swales, and structural best management practices.

3/31/2011Conducted water quality monitoring at the Springbrook Prairie Wetland Mitigation Project three times during the reporting period. Monitoring samples were taken four locations throughout the wetland to determine concentrations for total suspended solids, phosphorus, nitrogen, chlorine, and oxygen demand.

Tuesday, May 31, 2011 Page 23 of 35

E.4: Pre-construction Review of BMP Designs

Date

Goals

Milestone

Summary

The DuPage County Water Quality Best Management Practices Technical Guidance Document (BMP Manual) will provide guidance on the design and implementation of development practices that prevent stormwater quality degradation and enhance the overall quality of stormwater. The BMP manual will promote and give guidelines on the installation of vegetated filter strips, vegetated swales, infiltration systems, permeable pavers, manufactured structures, and stormwater detention BMPs such as dry detention basins, wet detention basins, constructed wetland detention basins and underground detention basins. Revisions to the Stormwater Ordinance will more clearly require new developments in DuPage County to incorporate BMPs into their design that will treat all runoff. Further, a water quality fund will be set up to accept fees from applicants who are unable to incorporate BMPs. The water quality fund will be used to fund water quality projects that would not otherwise be required under the Stormwater Ordinance, such as planting an eroding detention basin with native vegetation, restoring a wetland, or stabilizing a streambank. Revisions will also be made to more clearly require that a security is collected to aid in the enforcement of the proper construction and maintenance of BMPs.

DuPage County will offer staff training opportunities to municipalities and consultants in the review and design of permanent BMPs. Continue to enforce the new DuPage County Countywide Stormwater and Flood Plain Ordinance provisions.

3/31/2011Reviewed one hundred and twenty-nine (129) permit reviews for incorporated DuPage County in response to municipal requests, of which sixty-seven (67) permits were issued and certified for permit approval.

3/31/2011Eight (8) U.S. Army Corps of Engineers (USACOE) General Permit No. 25 submittals were issued and certified out of the (17) certified permits for unincorporated DuPage County. The USACOE general permit has given DuPage County the authority to make determinations involving wetland resources within its boundaries and streamlines the regulatory process by eliminating the duplication of regulatory review at different government levels, where applicable.

3/31/2011Forty-two (42) U.S. Army Corps of Engineers (USACOE) General Permit No. 25 submittals were issued out of the (67) certified permits for incorporated DuPage County.

3/31/2011Reviewed forty (40) permit submittals for unincorporated DuPage County, of which seventeen (17) permits were issued and certified for permit approval.

Tuesday, May 31, 2011 Page 24 of 35

E.5: Site Inspections During Construction

Date

Goals

Milestone

Summary

During this five-year permit phase, EDP will ensure that all inspection staff recognize inappropriate construction site discharge and proper regulatory procedures for amending the violation. Incidents of Non-Compliance may be issued for a site if the infraction meets the reporting criteria.

Continue to conduct regular site inspections during construction. Conduct staff training on recognizing inappropriate discharge from a construction site.

3/31/2011Inspection of post construction runoff controls during the construction phase are inspected as a result of complaints or at the discretion of the stormwater permit reviewer. Permitting staff will check the construction sites for consistency with their stormwater permit design submittal and Stormwater Pollution Prevention Plan, which includes a sediment erosion control plan.

E.6: Post Construction Inspections

Date

Goals

Milestone

Summary

Update Appendix E to include a technical guidance document for post-construction BMPs (BMP Manual). The BMP manual will require all BMPs to be put into a Natural Area Easement that will be monitored for three years after construction is completed. The Stormwater Ordinance will require that all BMPs are maintained according to a maintenance plan or as necessary.

Continue to offer employee training on site inspections.

5/4/2010Initiated contract for monitoring services and assistance with the Fawell Dam Riparian Restoration Project at Spring Hill and Tenspring Farm along the West Branch DuPage River. A five year maintenance and monitoring plan was required by the U.S. Army Corps of Engineers as part of a wetland mitigation permit.

3/31/2011Inspected four (4) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Wayne.

3/31/2011Inspected one (1) wetland buffer and riparian enhancement site, after construction of the project was complete, in the Village of Addison.

3/31/2011Inspected one (1) wetland buffer and riparian enhancement site, after construction of the project was complete, on Downers Grove Township property.

Tuesday, May 31, 2011 Page 25 of 35

3/31/2011Inspected eight (8) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the City of Warrenville. Inspected one (1) wetland mitigation site, as well.

3/31/2011Inspected one (1) wetland buffer and riparian enhancement sites, after construction of the project was complete, on Wayne Township property.

3/31/2011Inspected seven (7) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Villa Park.

3/31/2011Inspected four (4) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Winfield. Inspected one (1) wetland mitigation site, as well.

3/31/2011Inspected twelve (12) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the City of Wheaton. Inspected one (1) wetland mitigation site, as well as conducted one (1) special management area violation inspection including either wetlands, wetland buffer, or floodplain.

3/31/2011Inspected two (2) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Clarendon Hills.

3/31/2011Inspected eight (8) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Bensenville. Inspected one (1) wetland mitigation site, as well.

3/31/2011Inspected one (1) wetland buffer and riparian enhancement site, after construction of the project was complete, on Bloomingdale Township property.

3/31/2011Inspected eleven (11) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the City of Elmhurst. Additionally, conducted one (1) special management area violation inspection including either wetlands, wetland buffer, or floodplain.

3/31/2011Inspected seven (7) wetland buffer and riparian enhancement sites, after construction of the project was complete, at various Countywide locations.

3/31/2011Inspected seven (7) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Westmont. Inspected three (3) wetland mitigation sites, as well.

3/31/2011Inspected twenty-three (23) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Lisle.

3/31/2011Inspected 169 wetland buffer and riparian enhancement sites, after construction of the project was complete, for unincorporated DuPage County, including twelve (12) DuPage County Division of Transportation projects, two (2) DuPage County Division of Public Works projects, and fourteen (14) Forest Preserve District of DuPage County projects. Inspected eleven (11) wetland mitigation sites located in unincorporated DuPage County, including five (5) located of Forest Preserve District of DuPage County property, as well as conducted nineteen (19) special management area violation inspections including either wetlands, wetland buffer, or floodplain.

Tuesday, May 31, 2011 Page 26 of 35

3/31/2011Inspected seven (7) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Bartlett. Inspected two (2) wetland mitigation sites, as well.

3/31/2011Inspected twenty-six (26) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the City of West Chicago. Inspected five (5) wetland mitigation sites, as well as conducted two (2) special management area violation inspections including either wetlands, wetland buffer, or floodplain.

3/31/2011Inspected four (4) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the City of Darien. Inspected one (1) wetland mitigation site, as well as two (2) special management area violation inspections including either wetlands, wetland buffer, or floodplain.

3/31/2011Inspected eleven (11) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Burr Ridge. Inspected one (1) wetland mitigation site, as well as conducted four (4) special management area violation inspections including either wetlands, wetland buffer, or floodplain.

3/31/2011Inspected one (1) wetland buffer and riparian enhancement site, after construction of the project was complete, in Elk Grove Village. Inspected one (1) wetland mitigation site, as well.

3/31/2011Inspected six (6) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Glendale Heights. Inspected one (1) wetland mitigation site, as well.

3/31/2011Inspected eight (8) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Itasca. Inspected one (1) wetland mitigation site, as well.

3/31/2011Inspected nine (9) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Lombard. Additionally, conducted one (1) special management area violation inspection including either wetlands, wetland buffer, or floodplain.

3/31/2011Inspected forty-three (43) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the City of Naperville. Inspected seven (7) wetland mitigation sites, as well as conducted two (2) special management area violation inspections including either wetlands, wetland buffer, or floodplain.

3/31/2011Inspected one (1) wetland buffer and riparian enhancement site, after construction of the project was complete, in the City of Oakbrook Terrace.

3/31/2011Inspected two (2) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Roselle. Additionally, conducted one (1) special management area violation inspection including either wetlands, wetland buffer, or floodplain.

3/31/2011Inspected one (1) wetland buffer and riparian enhancement site, after construction of the project was complete, in the Village of Carol Stream.

3/31/2011Inspected nine (9) wetland buffer and riparian enhancement sites, after construction of the project was complete, in the Village of Woodridge. Inspected two (2) wetland mitigation sites, as well.

Tuesday, May 31, 2011 Page 27 of 35

3/31/2011Inspected two (2) wetland mitigation sites on behalf of the Village of Glen Ellyn after construction of the projects were completed.

3/31/2011Inspected one (1) wetland mitigation site on behalf of the Village of Downers Grove after construction of the project was completed.

3/31/2011Inspected one (1) wetland buffer and riparian enhancement site, after construction of the project was complete, in the Village of Hinsdale. Inspected one (1) wetland mitigation site, as well.

F.1: Employee Training Program

Date

Goals

Milestone

Summary

The Water Quality Stakeholders group will continue to meet to discuss proper training procedures and implementation on good housekeeping and pollution prevention for appropriate supervisory and/or management employees on: building and open space maintenance, vehicle/fleet maintenance, materials storage and disposal, infrastructure inspection and maintenance, construction and land disturbances and waste disposal. The water quality discussions will aim to assist supervisors and/or managers with providing guidance to their employees with the appropriate training/information based on their needs. The pollution prevention Water Quality Stakeholder discussions will be shared with Public Works, DuDOT and the Municipal Engineers for collaborative efforts with the on-going pollution prevention training of County staff.

Improve communications between County divisions including Stormwater Management, Public Works, and Transportation in order to run the good housekeeping pollution prevention program more effectively.

4/19/2010Two (2) Stormwater Management Division staff members attended a two-day water quality modeling course focusing on the use of WinSLAMM to meet TMDL, low impact development, and stormwater requirements for water quality and volume controls. The course was held at the University of Wisconsin.

5/25/2010Three (3) staff members attended a one-day workshop, hosted by Illinois Association for Floodplain and Stormwater Management (IAFSM), focusing on construction erosion control, post-construction BMPs, and illicit discharge detection.

5/25/2010Hosted a Spill Response and Stormwater Management Program Plans (SMPP) Seminar in the County auditorium through an educational services contract with The Conservation Foundation. A total of sixty-nine (69) participants attended the workshop, including two (2) DuPage County Division of Transportation staff members.

6/8/2010One (1) staff member from DuPage County Public Works Division attended a Water Storage Tank seminar, offered through the American Water Works Association, in Countryside, IL.

6/22/2010Two (2) staff members from DuPage County Division of Public Works attended an American Water Works Association Operation seminar in Chicago, IL.

Tuesday, May 31, 2011 Page 28 of 35

9/21/2010Partially funded the DuPage River Salt Creek Workgroup's efforts to host its second consecutive Private Deicing Workshop for Parking Lots and Sidewalks. There were fifty-two (52) attendees from various consultants and government organizations, including two (2) DuPage County staff members, at this workshop. The seminar was geared towards municipal public works managers and staff, city managers, and program administrators. The highlighted topics included on-site equipment training for closed loop solids spreading, open loop solids spreading, and liquid application calibration. Proper storage and handling procedures and current regulatory and program management procedures were also discussed.

9/22/2010Ten (10) DuPage County Division of Transportation grounds crew members attended the chloride reduction Public Roadway Deicing Workshop hosted by the DuPage River Salt Creek Workgroup, and partnering entities, including DuPage County. A total of 124 participants, mostly from area public works staff, attended.

10/1/2010Six (6) County staff members attended a workshop focusing on the application process and requirements for the Illinois Green Infrastructure Grant program. The program encourages incorporation of green infrastructure into municipal projects.

12/7/2010One (1) staff member from DuPage County Public Works Division attended a three-day Sewer Engineering class at the University of Wisconsin.

2/17/2011One (1) Stormwater Management Division staff member attended the 2011 Wisconsin Wetlands Association Conference in Baraboo, Wisconsin. The Conference emphasized the use of wetland buffers and their effect in urban areas. Speakers representing local, state, and federal levels of government and consultants presented on topics related to wetland protection and restoration providing perspectives into local wetland regulation: managing invasive species, flooding effects on systems, and developing buffer runoff standards for watershed protection.

3/8/2011One (1) DuPage County staff member attended a hands-on Introduction to Stormwater Management Modeling (SWMM) class in Normal, Illinois. Low Impact Development practices and bioretention modeling were examined using the SWMM model, as well as infiltration, hydraulic routing, and flood storage volumes.

3/24/2011One (1) Division of Public Works staff member attended a four-day WaterCon 2011 conference, hosted by the Illinois Section of American Water Works Association (AWWA) and the Illinois Water Environment Association (IWEA), in Springfield, IL. The general theme of the conference covered engineering, water/wastewater operations, and professional management skills.

3/31/2011Eighty-one (81) DuPage County Division of Transportation employees attended a first responder's training course during the reporting year.

Tuesday, May 31, 2011 Page 29 of 35

F.2: Inspection and Maintenance Program

Date

Goals

Milestone

Summary

Develop and implement an operation and maintenance program to prevent or reduce pollutant runoff from municipal operations to the storm sewer system.

Public Works Drainage Sub-Division will prioritize and develop procedures for unincorporated MS4 storm sewer outfall inspections to be implemented the following year. Division of Transportation will continue incorporating the use of organic road salt alternatives for roadway deicing such as a supermix of beet juice, calcium chloride and salt brine on roads, sidewalks and parking lots as deemed appropriate and study its effectiveness and impact on surface water. County facilities will submit record keeping of pollution prevention and good housekeeping activities for annual reporting. Continue stream maintenance program.

5/12/2010On behalf of the Village of Lisle, removed timber debris accumulated along the East Branch DuPage River at the Short Street and Burlington Avenue bridge crossings.

5/14/2010On behalf of the City of Naperville, removed timber debris accumulated along a 0.19 mile stretch of an unnamed tributary to Ferry Creek.

5/21/2010On behalf of the Village of Winfield, initiated the six-day process to remove timber debris accumulated along a 0.24 mile stretch of Winfield Creek.

5/22/2010Five (5) County staff participated in the River Sweep Program organized by The Conservation Foundation and partially funded by DuPage County Stormwater Management Division. Overall, 7.15 tons of trash were removed from waterways throughout DuPage County.

6/27/2010Completed, by DuPage County Public Works Division, a drainage project, which integrated installation of a new catch basin that allows for the capture of pollutant loads, at Route 53 and W. Harding Road.

7/19/2010On behalf of the Village of Glen Ellyn, initiated the two-day process to remove timber debris accumulated along a 0.12 mile stretch of the East Branch DuPage River.

7/23/2010Initiated operation, for a 3-day period, of the Elmhurst Quarry, Wood Dale-Itasca Reservoir, Fawell Dam, and Spring Creek Reservoir flood control facilities in response to storm events and increased stream elevations. Numerous minor facilities operated, as well. Various cameras have been installed throughout the watersheds to assist in flood control operations.

7/25/2010Distributed fifteen (15) rake and bag sets, through the Public Works Division's Maintain the Drain program, at the DuPage County Fair.

8/20/2010Completed, by DuPage County Public Works Division, a drainage project, which integrated installation of a one-foot nylaplastic catch basin that allows for the capture of pollutant loads, at Stewart Avenue and 14th Street.

Tuesday, May 31, 2011 Page 30 of 35

8/22/2010Completed maintenance of the drainage systems installed and had ownership accepted by DuPage County Public Works Division. No reported defects were found using procedures outlined in the Drainage System Inventory Maintenance Manual and Database document.

8/30/2010On behalf of the Village of Oak Brook, initiated the ten-day process to remove timber debris accumulated along a 0.60 mile stretch of Salt Creek.

9/14/2010On behalf of the City of Naperville, initiated the two-day process to remove timber debris accumulated at two locations along West Branch DuPage River.

9/16/2010On behalf of the Village of Wayne, removed timber debris accumulated along a 0.42 mile stretch of an unnamed tributary to Norton Creek.

9/17/2010On behalf of the City of Warrenville, initiated the three-day process to remove timber debris accumulated along 0.23 mile stretch of an unnamed tributary to Ferry Creek.

9/22/2010On behalf of the Village of Hinsdale, initiated the nine-day process to remove timber debris accumulated along a 0.22 mile stretch of Salt Creek.

10/4/2010On behalf of the Village of Bartlett, removed timber debris accumulated along a 0.06 mile stretch along Tributary #2 (West Branch DuPage River).

11/5/2010Mailed reminder notifications to unincorporated residents for the Public Works Division Maintain the Drain program.

12/15/2010Installed a structural best management practice, in the form of a nine-foot by four-foot Stormceptor, at the DuPage County Sheriff's Tactical Training and Impound Lot site. The manufactured structure is designed to capture sediment, oil, and other pollutants at the storm sewer inlet.

3/31/2011On behalf of the DuPage County Division of Public Works, removed timber debris from seven locations within unincorporated DuPage County along the following streams; West Branch DuPage River, Glen Park Channel, unnamed tributary to East Branch DuPage River, Tributary #2 (to East Branch DuPage River), unnamed tributary to Armitage Creek, and Tributary #4 (West Branch DuPage River).

3/31/2011Cleaned catch basins along County roadways as needed, with the schedule depending on amount of road debris, congestion, and traffic volume. DuPage County Department of Transportation and Operations has five maintenance operation trucks, including four (4) street sweepers and one (1) vactor truck.

3/31/2011Continued involvement, by two County staff members, with the DuPage River Salt Creek Workgroup Chloride Committee. The Chloride Committee meets quarterly to discuss the development of educational materials, including a parking lot deicing salt application rate guidance document and a chloride education and reduction program deicing survey; promote alternatives to conventional roadway deicing practices; and guide the implementation of those alternatives. The Committee has been well received by the community for their efforts in promoting chloride reduction best management practices.

Tuesday, May 31, 2011 Page 31 of 35

3/31/2011Utilized 30,000 gallons of supermix, a pretreatment practice to minimize the need for salt application on County roads, particularly those with hills or bridges. DuPage County's Division of Transportation shared the supermix pretreatment solution with Downers Grove, Lisle, Milton, Naperville, Winfield, and York Townships. Ice Bite beet juice was the predominant organic deicer used along roadways. Finally, County salt spreaders were calibrated to deliver between 250-300 pounds of product per lane mile.

3/31/2011Retained pollution prevention practices, such as the use of oil and grit separators adjacent to gasoline pumps and garages, within DuPage County Division of Transportation's maintenance yard grounds and other County facilities.

F.4: Municipal Operations and Waste Disposal

Date

Goals

Milestone

Summary

Develop procedures for properly disposing of waste removed from the separate storm sewers and areas such as dredge spoil, accumulated sediments, floatables, and other debris.

Promote green practices for landscaping and recreational areas by surveying parks, and waterfronts to minimize the use of fertilizer and pesticides, encourage the use of native vegetation, management of trash and pet wastes, and management of landscape waste.

4/17/2010Participated in the first of eight springtime recycling events, including the acceptance of electronic goods, coordinated by SCARCE. The community recycling events included: City of Wheaton's Recycling Extravaganza (4/17/2010); Village of Lisle's Sustainable Saturday (5/1/2010); DuPage County's Green Landscape Day (5/8/2010); Village of Itasca's Recycling Extravaganza (5/8/2010); City of Addison's Recycling Extravaganza (5/15/2010); Village of Woodridge's Rotary Recycling Extravaganza (5/22/2010); Wayne Township's Recycling Extravaganza (6/5/2010); and City of Naperville's Reuse and Recycling Extravaganza (6/5/2010).

4/24/2010Hosted a bike path clean-up event where forty (40) miles of the Illinois Prairie Path and eleven (11) miles of the Great Western Trail were cleaned. One thousand (1,000) individuals participated in the event, which helped reduce the amount of refuse that would wash into the storm sewer system.

5/22/2010Partially funded the 19th annual River Sweep clean up event, coordinated by The Conservation Foundation. Five hundred and sixty-five (565) volunteers, including two hundred and fifteen (215) teenagers, participated in cleanup activities, across fifteen (15) communities. Activities included removing trash and tires along the streambank and instream, as well as removal of invasive vegetation, such as buckthorn and garlic mustard.

7/1/2010Partnered with SCARCE and Village of Carol Stream to develop and implement a pilot project using biodegradable, plant-based mixture of windshield washing fluid over a three-month period. SCARCE distributed the fluid to municipalities, including Carol Stream, and the DuPage County Sherriff's Department and Division of Transportation. The pilot project was designed to assess the function of an alternative windshield washing fluid not containing methanol, a toxic compound.

Tuesday, May 31, 2011 Page 32 of 35

11/1/2010Collected 1,027,443 pounds of electronic recycling at a free, week-long electronics recycling event for DuPage County businesses.

2/7/2011Participated in a four-month commercial recycling contest, designed to improve and promote recycling practices of local businesses, with the Village of Westmont, the Westmont Chamber of Commerce, and Waste Management. A long-term goal is to achieve a 40% commercial recycling rate within the Village of Westmont.

3/1/2011Updated and reprinted the DuPage County Recycling Guide, which identifies appropriate materials and locations for recycling efforts.

3/31/2011Collected 22,304 pounds of holiday lights through SCARCE's Holiday Light Recycling Program, partially funded by DuPage County. The collected totals can be broken down to the following entities: Village of Lombard (764 pounds), Village of Lisle (1,092 pounds), City of Wheaton (6,653 pounds), City of West Chicago (1,209 pounds), Village of Downers Grove (4,538 pounds), Village of Hanover Park (418 pounds), Naperville Park District (2,651 pounds), Village of Roselle (612 pounds), Village of Woodridge (1,335), and Village of Carol Stream (3,032 pounds).

3/31/2011Collected 22,375 gallons of household hazardous waste at the regional household hazardous waste collection site in Naperville. DuPage County contributes funding to the Regional Household Hazardous Waste drop off facility, which collects household cleaners, oil-based paints, solvents, insecticides, herbicides, automotive fluids, fluorescent fixtures, household batteries, mercury, and unwanted medicines.

3/31/2011Collected 7,237 pounds of medications through the RxBox medication disposal program. The program is for unused prescriptions and expired, over-the-counter drugs. During the reporting period, there were fourteen (14) drop-off locations throughout DuPage County.

Tuesday, May 31, 2011 Page 33 of 35

F.5: Flood Management/Assess Guidelines

Date

Goals

Milestone

Summary

Continue to adopt watershed plans for watersheds in DuPage County. Update existing hydraulic models for use in future planning and floodplain mapping efforts. Continue to make revisions to the DuPage County Countywide Stormwater and Flood Plain Ordinance as necessary. Continue on-going efforts to ease flooding and flood damages to the maximum extent practicable. Begin to audit non-waiver, partial-waiver and complete waiver communities again in DuPage County for compliance with Appendix F. Submit floodplain maps using the County’s HSPF/FEQ/PVSTATS methodology are to be submitted to FEMA for review and approval. Mandatory review and comment periods will be established by FEMA. Corrections and updates will be made to the DFIRM maps and the dual-county issues will be resolved.

Adoption of the Spring Brook No. 1 Watershed Plan. Adoption of the St. Joseph Creek Watershed Plan. Adoption of the Water Quality Best Management Practices Technical Guidance manual along with the DuPage County Countywide Stormwater and Flood Plain Ordinance revisions that are associated with the document. Review and revise, as needed, Appendix F and other related appendices. Complete Phase II of the River Dumoulin Project. Construct the Marion Hills/75th Street Basin Project. Complete the installation of the Country Lakes Golf Course storm inlet to the new storm sewer system. Implement the recommendations in the Springbrook Creek Watershed Plan. Execute contract that will provide for vegetative maintenance and enhancements at many of the County’s existing flood control facilities. Construct the Busse Woods Dam Modifications Project. Construct the other NOAA projects. Construct the Huffman Street project in the Steeple Run Watershed. Randomly audit non-waiver, partial-waiver and complete waiver communities again in DuPage County for compliance with Appendix F. Continue floodplain mapping efforts for Salt Creek mainstem and its tributaries including Ginger, Sugar, Oak Brook Tributary, Bronswood Cemetary Tributary, Westwood Creek and Spring Brook; Steeple Run Tributary; Sawmill Creek Tributary; Kress Creek Tributary; Spring Brook No. 1 Tributary; and Armitage Creek Tributary. Corrected and updated DFIRM maps will be approved and adopted by FEMA.

9/14/2010Initiated audit activities for municipal compliance with the DuPage County Countywide Stormwater and Flood Plain Ordinance. Details of these activities are described under Best Management Practice E.2: Regulatory Control Program.

9/14/2010Received $950,000 from the National Resource Conservation Service (NRCS) to aid in providing flood relief in urbanized areas along Spring Brook and Kress Creek. The first project, along Spring Brook, includes the lowering of the Meacham Grove Reservoir labyrinth weir by one-foot, allowing stormwater to enter the reservoir at a lower elevation and more frequently to provide stormwater storage for smaller rainfall events. The second project, along Kress Creek, involves the construction of a 72-inch diversion storm sewer to convey flows within DuPage Airport property further away from the runways and allow detention storage improvements.

12/14/2010Approval of the Klein Creek Watershed Plan Addendum No. 2 by the Stormwater Management Planning Committee. A 30-day public comment period took place from October 6 through November 4. A public information meeting was held at the Carol Stream Village Hall Board Room on October 13, 2010.

12/14/2010Approval of the West Branch DuPage River Watershed Plan Addendum by the Stormwater Management Planning Committee. A 30-day public comment period took place from October 6 through November 4. A public information meeting was held on October 25, 2010 at the Warrenville City Council Chambers.

1/11/2011Approval of the Brewster Creek Headwaters Watershed Plan, which included recommendations to construct a 6-acre wetland, by the Stormwater Management Planning Committee. Partial funding for the constructed wetland, in the amount of $719,000, was sought through submittal for Illinois Green Infrastructure Grant (IGIG) program monies.

Tuesday, May 31, 2011 Page 34 of 35

3/31/2011Obtained permitting allowing for completion of the Churchill Woods Dam Modification and Wetland Restoration project. The permanent drawdown began in mid-October, a timeline that allow hibernating reptiles and amphibians to position their winter habitats to the changing water level. The dam modification was completed (3/5/2011), followed by the installation of riffles (3/14/11). Monitoring of plantings, to be installed in upcoming months, will continue for a period of three to five years. Changes in water column chemistry and fish and macroinvertebrate communities will also be monitored.

Tuesday, May 31, 2011 Page 35 of 35

Annual Facility Inspection Report - Section C

Year 8 of NPDES Permit No. ILR400502 DuPage County, 2nd Notice of Intent (Year 2) Continuous ambient monitoring data were collected along the East Branch DuPage River at Hidden Lake. The monitoring activities for this site were performed by DuPage County’s Division of Public Works. Additionally, continuous ambient monitoring data were collected along the West Branch DuPage River at the Butterfield Road bridge crossing and at the bridge crossing within the McDowell Grove Forest Preserve. The monitoring activities for these two sites were performed by DuPage County’s Division of Stormwater Management. Deployed sondes collected data hourly for the following parameters: temperature, pH, specific conductance, and dissolved oxygen. Note: Data highlighted in orange was not marked as calibrated. In addition to the EBHL, WBBR, and WBMG sites, similar data were collected at ten other sites throughout DuPage County during 2010. The DuPage River Salt Creek Workgroup (DRSCW) members also funded bioassessment monitoring throughout the Salt Creek watershed. All monitoring sites can be observed on the attached map.

 

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LEBHL 5/7/2010 11:00:00 14.12 7.29 1060 8.61EBHL 5/7/2010 12:00:00 14.48 7.19 1101 8.61EBHL 5/7/2010 13:00:00 14.73 7.17 1098 8.37EBHL 5/7/2010 14:00:00 14.89 7.15 1073 8.19EBHL 5/7/2010 15:00:00 15.59 7.12 1071 8.39EBHL 5/7/2010 16:00:00 15.41 7.15 1081 8.43EBHL 5/7/2010 17:00:00 15.51 7.2 1106 8.59EBHL 5/7/2010 18:00:00 15.4 7.26 1111 8.36EBHL 5/7/2010 19:00:00 15.05 7.32 1113 8.09EBHL 5/7/2010 20:00:00 14.69 7.36 1138 7.86EBHL 5/7/2010 21:00:00 14.43 7.38 1154 7.82EBHL 5/7/2010 22:00:00 14.22 7.39 1160 7.88EBHL 5/7/2010 23:00:00 14.06 7.39 1164 7.65EBHL 5/8/2010 0:00:00 13.68 7.4 1161 7.46EBHL 5/8/2010 1:00:00 13.51 7.4 1133 7.58EBHL 5/8/2010 2:00:00 12.98 7.44 1150 7.54EBHL 5/8/2010 3:00:00 12.94 7.44 1146 7.5EBHL 5/8/2010 4:00:00 12.6 7.47 1166 7.55EBHL 5/8/2010 5:00:00 12.38 7.47 1191 7.42EBHL 5/8/2010 6:00:00 12.14 7.5 1202 7.48EBHL 5/8/2010 7:00:00 11.9 7.51 1253 7.49EBHL 5/8/2010 8:00:00 11.88 7.55 1256 7.88EBHL 5/8/2010 9:00:00 11.91 7.57 1237 8.23EBHL 5/8/2010 10:00:00 12.2 7.59 1266 8.56EBHL 5/8/2010 11:00:00 12.33 7.59 1270 8.89EBHL 5/8/2010 12:00:00 12.44 7.59 1265 9.23EBHL 5/8/2010 13:00:00 12.62 7.59 1234 9.5EBHL 5/8/2010 14:00:00 12.94 7.6 1221 9.66EBHL 5/8/2010 15:00:00 13.43 7.54 1219 9.88EBHL 5/8/2010 16:00:00 13.8 7.53 1194 10.04EBHL 5/8/2010 17:00:00 13.46 7.6 1248 9.87EBHL 5/8/2010 18:00:00 13.31 7.61 1260 9.76EBHL 5/8/2010 19:00:00 13.31 7.59 1265 9.56EBHL 5/8/2010 20:00:00 12.99 7.58 1269 9.19EBHL 5/8/2010 21:00:00 12.66 7.55 1276 8.88EBHL 5/8/2010 22:00:00 12.55 7.53 1276 8.72EBHL 5/8/2010 23:00:00 12.32 7.52 1287 8.61EBHL 5/9/2010 0:00:00 12.03 7.51 1298 8.54EBHL 5/9/2010 1:00:00 11.76 7.51 1306 8.48EBHL 5/9/2010 2:00:00 11.47 7.51 1314 8.45EBHL 5/9/2010 3:00:00 11.21 7.51 1310 8.36EBHL 5/9/2010 4:00:00 10.89 7.52 1321 8.33EBHL 5/9/2010 5:00:00 10.65 7.53 1313 8.26EBHL 5/9/2010 6:00:00 10.33 7.54 1329 8.26

Station

East Branch DuPage River Hidden Lake Page 1 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/9/2010 7:00:00 10.3 7.56 1332 8.5EBHL 5/9/2010 8:00:00 10.7 7.58 1325 8.89EBHL 5/9/2010 9:00:00 11.41 7.59 1324 9.26EBHL 5/9/2010 10:00:00 12.17 7.6 1331 9.64EBHL 5/9/2010 11:00:00 13.22 7.6 1317 10.04EBHL 5/9/2010 12:00:00 14.16 7.61 1306 10.43EBHL 5/9/2010 13:00:00 14.86 7.56 1306 10.73EBHL 5/9/2010 14:00:00 15.63 7.53 1303 10.83EBHL 5/9/2010 15:00:00 16.81 7.51 1294 11.04EBHL 5/9/2010 16:00:00 17 7.51 1293 11.05EBHL 5/9/2010 17:00:00 16.57 7.51 1278 10.96EBHL 5/9/2010 18:00:00 16.54 7.51 1295 10.8EBHL 5/9/2010 19:00:00 16.12 7.52 1298 10.47EBHL 5/9/2010 20:00:00 15.47 7.51 1315 9.96EBHL 5/9/2010 21:00:00 15.08 7.5 1330 9.49EBHL 5/9/2010 22:00:00 14.76 7.5 1339 9.25EBHL 5/9/2010 23:00:00 14.47 7.48 1339 9.1EBHL 5/10/2010 0:00:00 14.17 7.44 1336 8.91EBHL 5/10/2010 1:00:00 13.75 7.42 1340 8.74EBHL 5/10/2010 2:00:00 13.28 7.4 1340 8.57EBHL 5/10/2010 3:00:00 12.91 7.4 1335 8.38EBHL 5/10/2010 4:00:00 12.53 7.41 1347 8.18EBHL 5/10/2010 5:00:00 12.12 7.44 1368 8.03EBHL 5/10/2010 6:00:00 11.76 7.46 1377 7.93EBHL 5/10/2010 7:00:00 11.71 7.5 1390 8.15EBHL 5/10/2010 8:00:00 12.04 7.53 1404 8.67EBHL 5/10/2010 9:00:00 12.81 7.57 1397 9.23EBHL 5/10/2010 10:00:00 13.72 7.59 1395 9.71EBHL 5/10/2010 11:00:00 14.5 7.57 1344 10.23EBHL 5/10/2010 12:00:00 14.65 7.49 1328 10.73EBHL 5/10/2010 13:00:00 15.18 7.48 1320 11.11EBHL 5/10/2010 14:00:00 15.43 7.47 1310 11.35EBHL 5/10/2010 15:00:00 15.8 7.5 1324 11.57EBHL 5/10/2010 16:00:00 15.64 7.53 1323 11.65EBHL 5/10/2010 17:00:00 15.54 7.54 1337 11.57EBHL 5/10/2010 18:00:00 15.27 7.53 1344 11.27EBHL 5/10/2010 19:00:00 14.95 7.53 1352 10.94EBHL 5/10/2010 20:00:00 14.6 7.51 1351 10.31EBHL 5/10/2010 21:00:00 14.31 7.5 1355 9.83EBHL 5/10/2010 22:00:00 14.1 7.47 1352 9.46EBHL 5/10/2010 23:00:00 13.89 7.45 1352 9.3EBHL 5/11/2010 0:00:00 13.6 7.42 1350 9.05EBHL 5/11/2010 1:00:00 13.31 7.41 1344 8.83EBHL 5/11/2010 2:00:00 12.93 7.48 1321 8.91

East Branch DuPage River Hidden Lake Page 2 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/11/2010 3:00:00 12.51 7.49 1256 9.05EBHL 5/11/2010 4:00:00 11.68 7.46 1085 9.17EBHL 5/11/2010 5:00:00 10.99 7.48 729 9.45EBHL 5/11/2010 6:00:00 11.17 7.52 958 9.11EBHL 5/11/2010 7:00:00 11.47 7.44 980 9.05EBHL 5/11/2010 8:00:00 11.52 7.36 1012 8.92EBHL 5/11/2010 9:00:00 11.67 7.36 1045 8.81EBHL 5/11/2010 10:00:00 12.07 7.22 1042 8.97EBHL 5/11/2010 11:00:00 12.15 7.19 1021 9.03EBHL 5/11/2010 12:00:00 12.38 7.17 955 9.03EBHL 5/11/2010 13:00:00 12.61 7.16 978 9.11EBHL 5/11/2010 14:00:00 12.74 7.16 1008 9.09EBHL 5/11/2010 15:00:00 12.73 7.19 1030 9.05EBHL 5/11/2010 16:00:00 12.84 7.2 1019 9.07EBHL 5/11/2010 17:00:00 12.85 7.2 1018 8.92EBHL 5/11/2010 18:00:00 12.8 7.22 1028 8.84EBHL 5/11/2010 19:00:00 12.79 7.21 1016 8.78EBHL 5/11/2010 20:00:00 12.71 7.21 1002 8.73EBHL 5/11/2010 21:00:00 12.64 7.21 989 8.61EBHL 5/11/2010 22:00:00 12.55 7.22 981 8.58EBHL 5/11/2010 23:00:00 12.46 7.24 991 8.55EBHL 5/12/2010 0:00:00 12.32 7.31 1011 8.39EBHL 5/12/2010 1:00:00 12.3 7.32 1007 8.4EBHL 5/12/2010 2:00:00 12.28 7.33 1001 8.42EBHL 5/12/2010 3:00:00 12.2 7.36 999 8.37EBHL 5/12/2010 4:00:00 12.15 7.37 1010 8.24EBHL 5/12/2010 5:00:00 12.09 7.4 1010 8.16EBHL 5/12/2010 6:00:00 12.05 7.4 1013 8.15EBHL 5/12/2010 7:00:00 12.03 7.43 1013 8.17EBHL 5/12/2010 8:00:00 12.06 7.43 1014 8.2EBHL 5/12/2010 9:00:00 12.16 7.44 1025 8.31EBHL 5/12/2010 10:00:00 12.28 7.42 1019 8.46EBHL 5/12/2010 11:00:00 12.46 7.4 1029 8.68EBHL 5/12/2010 12:00:00 12.61 7.39 1027 8.88EBHL 5/12/2010 13:00:00 12.64 7.41 1046 8.93EBHL 5/12/2010 14:00:00 12.61 7.41 1057 8.97EBHL 5/12/2010 15:00:00 12.79 7.43 1062 9.11EBHL 5/12/2010 16:00:00 12.73 7.45 1073 9.09EBHL 5/12/2010 17:00:00 12.77 7.45 1079 9.08EBHL 5/12/2010 18:00:00 12.78 7.44 1088 9.05EBHL 5/12/2010 19:00:00 12.75 7.42 1100 8.96EBHL 5/12/2010 20:00:00 12.7 7.41 1112 8.84EBHL 5/12/2010 21:00:00 12.65 7.39 1125 8.72EBHL 5/12/2010 22:00:00 12.54 7.41 1130 8.76

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/12/2010 23:00:00 12.59 7.36 1111 8.67EBHL 5/13/2010 0:00:00 12.47 7.34 1144 8.52EBHL 5/13/2010 1:00:00 12.54 7.33 1103 8.53EBHL 5/13/2010 2:00:00 12.49 7.34 1147 8.46EBHL 5/13/2010 3:00:00 12.49 7.36 1129 8.62EBHL 5/13/2010 4:00:00 12.49 7.33 1137 8.7EBHL 5/13/2010 5:00:00 12.33 7.32 1037 8.68EBHL 5/13/2010 6:00:00 12.09 7.33 865 8.84EBHL 5/13/2010 7:00:00 11.51 7.39 584 9.29EBHL 5/13/2010 8:00:00 11.7 7.34 688 9.12EBHL 5/13/2010 9:00:00 11.75 7.36 786 8.83EBHL 5/13/2010 10:00:00 11.77 7.32 789 8.68EBHL 5/13/2010 11:00:00 11.94 7.34 780 8.77EBHL 5/13/2010 12:00:00 12.16 7.34 773 8.7EBHL 5/13/2010 13:00:00 12.66 7.3 792 8.79EBHL 5/13/2010 14:00:00 13.18 7.24 798 8.83EBHL 5/13/2010 15:00:00 13.38 7.27 748 8.18EBHL 5/13/2010 16:00:00 14.03 7.23 784 8.59EBHL 5/13/2010 17:00:00 14.4 7.26 769 8.52EBHL 5/13/2010 18:00:00 14.56 7.27 754 8.25EBHL 5/13/2010 19:00:00 14.58 7.23 739 8.19EBHL 5/13/2010 20:00:00 14.65 7.23 736 7.85EBHL 5/13/2010 21:00:00 14.55 7.24 718 7.92EBHL 5/13/2010 22:00:00 14.55 7.26 727 7.7EBHL 5/13/2010 23:00:00 14.51 7.3 738 7.53EBHL 5/14/2010 0:00:00 14.42 7.32 753 7.45EBHL 5/14/2010 1:00:00 14.33 7.34 774 7.38EBHL 5/14/2010 2:00:00 14.24 7.35 798 7.28EBHL 5/14/2010 3:00:00 14.09 7.36 814 7.22EBHL 5/14/2010 4:00:00 14 7.37 832 6.98EBHL 5/14/2010 5:00:00 13.81 7.38 850 7.08EBHL 5/14/2010 6:00:00 13.66 7.38 865 7.02EBHL 5/14/2010 7:00:00 13.55 7.38 879 7.05EBHL 5/14/2010 8:00:00 13.68 7.37 885 6.61EBHL 5/14/2010 9:00:00 13.69 7.38 900 7.1EBHL 5/14/2010 10:00:00 13.92 7.38 910 7.41EBHL 5/14/2010 11:00:00 14.34 7.37 916 7.59EBHL 5/14/2010 12:00:00 14.7 7.38 926 7.88EBHL 5/14/2010 13:00:00 15.15 7.39 935 8.28EBHL 5/14/2010 14:00:00 15.56 7.41 941 8.43EBHL 5/14/2010 15:00:00 15.86 7.4 949 8.7EBHL 5/14/2010 16:00:00 16.1 7.39 953 8.76EBHL 5/14/2010 17:00:00 16.13 7.38 954 8.77EBHL 5/14/2010 18:00:00 16.22 7.37 954 8.73

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/14/2010 19:00:00 16.2 7.36 956 8.77EBHL 5/14/2010 20:00:00 16.16 7.37 957 8.7EBHL 5/14/2010 21:00:00 16.09 7.38 957 8.52EBHL 5/14/2010 22:00:00 15.97 7.38 959 8.2EBHL 5/14/2010 23:00:00 15.82 7.37 961 8.19EBHL 5/15/2010 0:00:00 15.7 7.38 961 8.27EBHL 5/15/2010 1:00:00 15.57 7.38 965 8.1EBHL 5/15/2010 2:00:00 15.42 7.39 969 8.06EBHL 5/15/2010 3:00:00 15.26 7.39 974 7.96EBHL 5/15/2010 4:00:00 15.11 7.38 976 7.93EBHL 5/15/2010 5:00:00 14.93 7.38 980 7.86EBHL 5/15/2010 6:00:00 14.79 7.39 981 7.79EBHL 5/15/2010 7:00:00 14.72 7.4 984 7.84EBHL 5/15/2010 8:00:00 14.81 7.4 984 7.92EBHL 5/15/2010 9:00:00 14.99 7.41 986 8.12EBHL 5/15/2010 10:00:00 15.13 7.4 991 8.38EBHL 5/15/2010 11:00:00 15.4 7.4 998 8.59EBHL 5/15/2010 12:00:00 15.6 7.4 1007 8.83EBHL 5/15/2010 13:00:00 15.75 7.41 1013 9.03EBHL 5/15/2010 14:00:00 15.87 7.41 1017 9.2EBHL 5/15/2010 15:00:00 15.85 7.41 1021 9.33EBHL 5/15/2010 16:00:00 15.91 7.41 1028 9.43EBHL 5/15/2010 17:00:00 15.83 7.41 1037 9.42EBHL 5/15/2010 18:00:00 15.85 7.46 1031 9.48EBHL 5/15/2010 19:00:00 15.61 7.4 1044 9.52EBHL 5/15/2010 20:00:00 15.31 7.38 1047 9.31EBHL 5/15/2010 21:00:00 15.12 7.37 1050 9.23EBHL 5/15/2010 22:00:00 14.87 7.36 1053 9.1EBHL 5/15/2010 23:00:00 14.61 7.35 1058 9.03EBHL 5/16/2010 0:00:00 14.38 7.37 1058 8.91EBHL 5/16/2010 1:00:00 14.17 7.34 1055 8.86EBHL 5/16/2010 2:00:00 14.02 7.36 1049 8.77EBHL 5/16/2010 3:00:00 13.86 7.35 1051 8.75EBHL 5/16/2010 4:00:00 13.67 7.35 1055 8.69EBHL 5/16/2010 5:00:00 13.47 7.4 1059 8.52EBHL 5/16/2010 6:00:00 13.39 7.42 1057 8.5EBHL 5/16/2010 7:00:00 13.42 7.43 1062 8.56EBHL 5/16/2010 8:00:00 13.59 7.43 1070 8.74EBHL 5/16/2010 9:00:00 13.99 7.46 1076 8.96EBHL 5/16/2010 10:00:00 14.57 7.45 1083 9.19EBHL 5/16/2010 11:00:00 15.2 7.48 1081 9.5EBHL 5/16/2010 12:00:00 15.99 7.47 1078 9.81EBHL 5/16/2010 13:00:00 16.89 7.48 1080 10.05EBHL 5/16/2010 14:00:00 17.63 7.47 1097 10.16

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/16/2010 15:00:00 18.15 7.47 1096 10.31EBHL 5/16/2010 16:00:00 18.24 7.48 1096 10.33EBHL 5/16/2010 17:00:00 18.04 7.49 1106 10.16EBHL 5/16/2010 18:00:00 18.02 7.51 1118 10.04EBHL 5/16/2010 19:00:00 17.55 7.49 1129 9.8EBHL 5/16/2010 20:00:00 17 7.46 1137 9.4EBHL 5/16/2010 21:00:00 16.58 7.43 1136 9.12EBHL 5/16/2010 22:00:00 16.1 7.41 1130 9EBHL 5/16/2010 23:00:00 15.7 7.39 1129 8.84EBHL 5/17/2010 0:00:00 15.32 7.37 1130 8.68EBHL 5/17/2010 1:00:00 15.11 7.37 1135 8.52EBHL 5/17/2010 2:00:00 14.91 7.34 1139 8.45EBHL 5/17/2010 3:00:00 14.79 7.35 1133 8.41EBHL 5/17/2010 4:00:00 14.72 7.38 1138 8.24EBHL 5/17/2010 5:00:00 14.65 7.41 1148 8.12EBHL 5/17/2010 6:00:00 14.59 7.41 1152 8.07EBHL 5/17/2010 7:00:00 14.57 7.42 1150 8.12EBHL 5/17/2010 8:00:00 14.57 7.43 1145 8.17EBHL 5/17/2010 9:00:00 14.67 7.43 1144 8.35EBHL 5/17/2010 10:00:00 14.9 7.43 1143 8.66EBHL 5/17/2010 11:00:00 15.22 7.42 1143 9.01EBHL 5/17/2010 12:00:00 15.6 7.41 1136 9.37EBHL 5/17/2010 13:00:00 15.54 7.43 1132 9.66EBHL 5/17/2010 14:00:00 15.45 7.43 1137 9.69EBHL 5/17/2010 15:00:00 15.56 7.44 1145 9.73EBHL 5/17/2010 16:00:00 15.59 7.44 1152 9.77EBHL 5/17/2010 17:00:00 15.63 7.45 1161 9.81EBHL 5/17/2010 18:00:00 15.53 7.44 1163 9.83EBHL 5/17/2010 19:00:00 15.3 7.41 1168 9.7EBHL 5/17/2010 20:00:00 15.12 7.38 1165 9.39EBHL 5/17/2010 21:00:00 15.03 7.35 1167 9.09EBHL 5/17/2010 22:00:00 14.85 7.33 1166 8.92EBHL 5/17/2010 23:00:00 14.72 7.3 1162 8.73EBHL 5/18/2010 0:00:00 14.58 7.27 1159 8.59EBHL 5/18/2010 1:00:00 14.47 7.28 1162 8.43EBHL 5/18/2010 2:00:00 14.32 7.28 1163 8.28EBHL 5/18/2010 3:00:00 14.1 7.28 1174 8.16EBHL 5/18/2010 4:00:00 14 7.3 1185 8.12EBHL 5/18/2010 5:00:00 13.84 7.31 1195 8.02EBHL 5/18/2010 6:00:00 13.67 7.32 1201 8.03EBHL 5/18/2010 7:00:00 13.65 7.34 1194 8.24EBHL 5/18/2010 8:00:00 13.75 7.36 1191 8.42EBHL 5/18/2010 9:00:00 14.15 7.38 1185 8.75EBHL 5/18/2010 10:00:00 14.39 7.38 1182 9.13

East Branch DuPage River Hidden Lake Page 6 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/18/2010 11:00:00 15.4 7.36 1177 9.55EBHL 5/18/2010 12:00:00 15.11 7.38 1171 9.76EBHL 5/18/2010 13:00:00 15.25 7.36 1173 9.92EBHL 5/18/2010 14:00:00 15.29 7.37 1171 9.96EBHL 5/18/2010 15:00:00 15.29 7.43 1184 9.86EBHL 5/18/2010 16:00:00 15.48 7.43 1202 9.89EBHL 5/18/2010 17:00:00 15.45 7.42 1215 9.88EBHL 5/18/2010 18:00:00 15.28 7.42 1215 9.73EBHL 5/18/2010 19:00:00 15.13 7.41 1209 9.44EBHL 5/18/2010 20:00:00 14.99 7.38 1208 9.13EBHL 5/18/2010 21:00:00 14.84 7.38 1207 8.91EBHL 5/18/2010 22:00:00 14.65 7.31 1205 8.73EBHL 5/18/2010 23:00:00 14.5 7.31 1209 8.57EBHL 5/19/2010 0:00:00 14.33 7.29 1202 8.45EBHL 5/19/2010 1:00:00 14.09 7.28 1201 8.33EBHL 5/19/2010 2:00:00 13.88 7.26 1199 8.25EBHL 5/19/2010 3:00:00 13.7 7.27 1198 8.18EBHL 5/19/2010 4:00:00 13.46 7.28 1207 8.05EBHL 5/19/2010 5:00:00 13.22 7.3 1216 7.99EBHL 5/19/2010 6:00:00 13.01 7.32 1224 7.95EBHL 5/19/2010 7:00:00 13.05 7.34 1227 8.14EBHL 5/19/2010 8:00:00 13.49 7.35 1233 8.36EBHL 5/19/2010 9:00:00 14.13 7.36 1223 8.65EBHL 5/19/2010 10:00:00 14.97 7.36 1214 8.93EBHL 5/19/2010 11:00:00 15.82 7.36 1209 9.36EBHL 5/19/2010 12:00:00 16.87 7.35 1197 9.82EBHL 5/19/2010 13:00:00 17.91 7.34 1193 10.14EBHL 5/19/2010 14:00:00 18.74 7.36 1197 10.34EBHL 5/19/2010 15:00:00 19.43 7.39 1203 10.44EBHL 5/19/2010 16:00:00 19.73 7.44 1210 10.44EBHL 5/19/2010 17:00:00 19.72 7.45 1217 10.31EBHL 5/19/2010 18:00:00 19.33 7.44 1224 10.02EBHL 5/19/2010 19:00:00 18.88 7.41 1224 9.66EBHL 5/19/2010 20:00:00 18.56 7.4 1232 9.16EBHL 5/19/2010 21:00:00 18.29 7.4 1232 8.76EBHL 5/19/2010 22:00:00 18 7.39 1231 8.57EBHL 5/19/2010 23:00:00 17.52 7.38 1230 8.43EBHL 5/20/2010 0:00:00 17.11 7.36 1231 8.33EBHL 5/20/2010 1:00:00 16.59 7.32 1224 8.17EBHL 5/20/2010 2:00:00 16.07 7.3 1219 8.01EBHL 5/20/2010 3:00:00 15.6 7.3 1218 7.87EBHL 5/20/2010 4:00:00 15.19 7.31 1216 7.7EBHL 5/20/2010 5:00:00 14.82 7.33 1214 7.53EBHL 5/20/2010 6:00:00 14.61 7.35 1219 7.49

East Branch DuPage River Hidden Lake Page 7 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/20/2010 7:00:00 14.68 7.39 1228 7.73EBHL 5/20/2010 8:00:00 15.07 7.43 1235 8.05EBHL 5/20/2010 9:00:00 15.83 7.42 1235 8.38EBHL 5/20/2010 10:00:00 16.49 7.42 1220 8.79EBHL 5/20/2010 11:00:00 17.44 7.43 1206 9.29EBHL 5/20/2010 12:00:00 18.04 7.38 1194 9.76EBHL 5/20/2010 13:00:00 19.07 7.37 1193 10.14EBHL 5/20/2010 14:00:00 19.06 7.4 1204 10.37EBHL 5/20/2010 15:00:00 19.45 7.5 1233 10.26EBHL 5/20/2010 16:00:00 19.37 7.6 1238 10.35EBHL 5/20/2010 17:00:00 19.31 7.59 1212 10.18EBHL 5/20/2010 18:00:00 18.78 7.44 1186 9.82EBHL 5/20/2010 19:00:00 18.21 7.32 1173 9.38EBHL 5/20/2010 20:00:00 18.12 7.33 1185 9.18EBHL 5/20/2010 21:00:00 17.99 7.33 1189 8.76EBHL 5/20/2010 22:00:00 17.62 7.33 1259 8.41EBHL 5/20/2010 23:00:00 17.41 7.29 1227 8.2EBHL 5/21/2010 0:00:00 17.16 7.26 1203 8EBHL 5/21/2010 1:00:00 16.9 7.24 1179 7.9EBHL 5/21/2010 2:00:00 16.6 7.23 1170 7.82EBHL 5/21/2010 3:00:00 16.34 7.22 1211 7.64EBHL 5/21/2010 4:00:00 16.03 7.23 1116 7.46EBHL 5/21/2010 5:00:00 15.97 7.26 1095 7.31EBHL 5/21/2010 6:00:00 15.94 7.29 1121 7.24EBHL 5/21/2010 7:00:00 15.99 7.28 1137 7.29EBHL 5/21/2010 8:00:00 16.22 7.27 1128 7.5EBHL 5/21/2010 9:00:00 16.28 7.28 1101 7.51EBHL 5/21/2010 10:00:00 16.44 7.23 1102 7.85EBHL 5/21/2010 11:00:00 16.66 7.24 1119 8.13EBHL 5/21/2010 12:00:00 16.69 7.26 1125 8.12EBHL 5/21/2010 13:00:00 16.93 7.25 1115 8.47EBHL 5/21/2010 14:00:00 17.45 7.29 1125 8.69EBHL 5/21/2010 15:00:00 18.25 7.35 1125 9.07EBHL 5/21/2010 16:00:00 18.63 7.37 1133 9.39EBHL 5/21/2010 17:00:00 18.37 7.37 1138 9.28EBHL 5/21/2010 18:00:00 18.07 7.35 1134 8.87EBHL 5/21/2010 19:00:00 18.12 7.35 1139 8.75EBHL 5/21/2010 20:00:00 17.91 7.34 1141 8.42EBHL 5/21/2010 21:00:00 17.73 7.32 1142 8.06EBHL 5/21/2010 22:00:00 17.56 7.31 1146 7.82EBHL 5/21/2010 23:00:00 17.41 7.29 1148 7.64EBHL 5/22/2010 0:00:00 17.15 7.28 1147 7.52EBHL 5/22/2010 1:00:00 16.92 7.25 1144 7.3EBHL 5/22/2010 2:00:00 16.85 7.24 1137 7.13

East Branch DuPage River Hidden Lake Page 8 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/22/2010 3:00:00 16.74 7.24 1137 7.02EBHL 5/22/2010 4:00:00 16.66 7.24 1135 6.89EBHL 5/22/2010 5:00:00 16.59 7.26 1140 6.81EBHL 5/22/2010 6:00:00 16.56 7.28 1143 6.73EBHL 5/22/2010 7:00:00 16.58 7.3 1155 6.82EBHL 5/22/2010 8:00:00 16.72 7.32 1153 6.95EBHL 5/22/2010 9:00:00 16.84 7.33 1154 7.07EBHL 5/22/2010 10:00:00 17.27 7.35 1140 7.44EBHL 5/22/2010 11:00:00 18.09 7.35 1129 7.85EBHL 5/22/2010 12:00:00 18.62 7.31 1118 8.32EBHL 5/22/2010 13:00:00 19.5 7.31 1111 8.79EBHL 5/22/2010 14:00:00 20.09 7.34 1105 9.16EBHL 5/22/2010 15:00:00 20.31 7.27 1086 9.39EBHL 5/22/2010 16:00:00 20.62 7.29 1087 9.48EBHL 5/22/2010 17:00:00 20.83 7.32 1086 9.58EBHL 5/22/2010 18:00:00 20.77 7.36 1086 9.6EBHL 5/22/2010 19:00:00 20.36 7.36 1094 9.25EBHL 5/22/2010 20:00:00 20.01 7.34 1101 8.79EBHL 5/22/2010 21:00:00 19.74 7.34 1109 8.39EBHL 5/22/2010 22:00:00 19.48 7.33 1115 8.16EBHL 5/22/2010 23:00:00 19.2 7.32 1117 7.87EBHL 5/23/2010 0:00:00 18.98 7.3 1114 7.59EBHL 5/23/2010 1:00:00 18.74 7.28 1114 7.37EBHL 5/23/2010 2:00:00 18.5 7.27 1111 7.18EBHL 5/23/2010 3:00:00 18.24 7.27 1113 6.94EBHL 5/23/2010 4:00:00 17.96 7.27 1122 6.81EBHL 5/23/2010 5:00:00 17.75 7.28 1128 6.69EBHL 5/23/2010 6:00:00 17.58 7.3 1133 6.62EBHL 5/23/2010 7:00:00 17.74 7.32 1131 6.74EBHL 5/23/2010 8:00:00 18.25 7.34 1131 7.03EBHL 5/23/2010 9:00:00 18.99 7.36 1132 7.29EBHL 5/23/2010 10:00:00 19.93 7.38 1123 7.63EBHL 5/23/2010 11:00:00 20.95 7.39 1118 8.07EBHL 5/23/2010 12:00:00 21.99 7.41 1107 8.66EBHL 5/23/2010 13:00:00 22.96 7.41 1099 9.17EBHL 5/23/2010 14:00:00 23.88 7.44 1097 9.62EBHL 5/23/2010 15:00:00 24.73 7.58 1096 9.77EBHL 5/23/2010 16:00:00 24.35 7.44 1076 9.9EBHL 5/23/2010 17:00:00 24.4 7.49 1076 9.91EBHL 5/23/2010 18:00:00 24.21 7.52 1079 9.73EBHL 5/23/2010 19:00:00 23.75 7.53 1079 9.24EBHL 5/23/2010 20:00:00 23.36 7.49 1084 8.52EBHL 5/23/2010 21:00:00 23.12 7.48 1088 7.95EBHL 5/23/2010 22:00:00 22.92 7.46 1094 7.66

East Branch DuPage River Hidden Lake Page 9 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/23/2010 23:00:00 22.6 7.44 1099 7.38EBHL 5/24/2010 0:00:00 22.22 7.41 1099 7.09EBHL 5/24/2010 1:00:00 21.67 7.38 1105 6.79EBHL 5/24/2010 2:00:00 21.26 7.35 1111 6.65EBHL 5/24/2010 3:00:00 20.9 7.32 1117 6.48EBHL 5/24/2010 4:00:00 20.66 7.32 1121 6.26EBHL 5/24/2010 5:00:00 20.53 7.36 1124 6.06EBHL 5/24/2010 6:00:00 20.43 7.37 1124 5.87EBHL 5/24/2010 7:00:00 20.65 7.39 1125 6.08EBHL 5/24/2010 8:00:00 21.19 7.42 1129 6.4EBHL 5/24/2010 9:00:00 22.05 7.67 1263 6.93EBHL 5/24/2010 10:00:00 22.79 7.52 1251 7.42EBHL 5/24/2010 11:00:00 23.46 7.47 1242 8.04EBHL 5/24/2010 12:00:00 24.06 7.47 1233 8.79EBHL 5/24/2010 13:00:00 24.91 7.47 1227 9.37EBHL 5/24/2010 14:00:00 25.18 7.5 1229 9.69EBHL 5/24/2010 15:00:00 26.09 7.56 1219 10.25EBHL 5/24/2010 16:00:00 26.24 7.55 1216 10.66EBHL 5/24/2010 17:00:00 26.43 7.6 1218 11EBHL 5/24/2010 18:00:00 25.97 7.62 1216 10.73EBHL 5/24/2010 19:00:00 25.32 7.6 1221 9.92EBHL 5/24/2010 20:00:00 24.9 7.57 1226 9.06EBHL 5/24/2010 21:00:00 24.3 7.53 1238 8.3EBHL 5/24/2010 22:00:00 24.07 7.51 1255 7.87EBHL 5/24/2010 23:00:00 23.58 7.48 1264 7.59EBHL 5/25/2010 0:00:00 23.12 7.45 1261 7.36EBHL 5/25/2010 1:00:00 22.69 7.41 1260 7.02EBHL 5/25/2010 2:00:00 22.19 7.4 1250 6.7EBHL 5/25/2010 3:00:00 21.78 7.37 1249 6.33EBHL 5/25/2010 4:00:00 21.32 7.36 1268 5.97EBHL 5/25/2010 5:00:00 21.07 7.37 1266 5.61EBHL 5/25/2010 6:00:00 20.89 7.39 1265 5.44EBHL 5/25/2010 7:00:00 20.95 7.42 1271 5.78EBHL 5/25/2010 8:00:00 21.32 7.47 1273 6.35EBHL 5/25/2010 9:00:00 22.21 7.52 1278 7.09EBHL 5/25/2010 10:00:00 23.12 7.55 1267 7.66EBHL 5/25/2010 11:00:00 23.78 7.57 1250 8.42EBHL 5/25/2010 12:00:00 24.58 7.57 1234 9.35EBHL 5/25/2010 13:00:00 24.79 7.55 1228 10.24EBHL 5/25/2010 14:00:00 25.32 7.58 1224 10.76EBHL 5/25/2010 15:00:00 26.02 7.64 1230 11.37EBHL 5/25/2010 16:00:00 26.27 7.68 1230 11.93EBHL 5/25/2010 17:00:00 26.33 7.74 1225 12.38EBHL 5/25/2010 18:00:00 25.92 7.76 1226 12.12

East Branch DuPage River Hidden Lake Page 10 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/25/2010 19:00:00 25.06 7.73 1227 10.88EBHL 5/25/2010 20:00:00 24.31 7.66 1227 9.31EBHL 5/25/2010 21:00:00 23.92 7.63 1225 8.72EBHL 5/25/2010 22:00:00 23.62 7.61 1232 8.33EBHL 5/25/2010 23:00:00 23.19 7.57 1227 8.12EBHL 5/26/2010 0:00:00 22.73 7.53 1228 7.68EBHL 5/26/2010 1:00:00 22.33 7.48 1225 7.29EBHL 5/26/2010 2:00:00 22 7.47 1228 6.9EBHL 5/26/2010 3:00:00 21.31 7.38 1205 6.63EBHL 5/26/2010 4:00:00 20.84 7.37 1230 6.14EBHL 5/26/2010 5:00:00 20.68 7.38 1230 5.77EBHL 5/26/2010 6:00:00 20.47 7.4 1235 5.52EBHL 5/26/2010 7:00:00 20.53 7.43 1249 5.73EBHL 5/26/2010 8:00:00 20.96 7.47 1254 6.5EBHL 5/26/2010 9:00:00 22 7.53 1260 7.44EBHL 5/26/2010 10:00:00 22.93 7.58 1269 8.15EBHL 5/26/2010 11:00:00 23.57 7.59 1264 8.82EBHL 5/26/2010 12:00:00 24.29 7.58 1245 9.89EBHL 5/26/2010 13:00:00 25.09 7.55 1223 10.94EBHL 5/26/2010 14:00:00 25.14 7.59 1217 11.81EBHL 5/26/2010 15:00:00 25.1 7.65 1210 12.12EBHL 5/26/2010 16:00:00 24.4 7.66 1210 11.52EBHL 5/26/2010 17:00:00 23.47 7.67 1177 9.34EBHL 5/26/2010 18:00:00 23.33 7.6 1207 9.35EBHL 5/26/2010 19:00:00 23.5 7.6 1215 9.33EBHL 5/26/2010 20:00:00 23.54 7.61 1207 8.95EBHL 5/26/2010 21:00:00 23.01 7.58 1201 7.72EBHL 5/26/2010 22:00:00 22.74 7.55 1219 7.37EBHL 5/26/2010 23:00:00 22.57 7.53 1217 7.15EBHL 5/27/2010 0:00:00 22.09 7.48 1213 6.9EBHL 5/27/2010 1:00:00 21.78 7.45 1226 6.56EBHL 5/27/2010 2:00:00 21.34 7.42 1233 6.12EBHL 5/27/2010 3:00:00 21.02 7.4 1245 5.57EBHL 5/27/2010 4:00:00 20.79 7.39 1255 5.22EBHL 5/27/2010 5:00:00 20.54 7.42 1272 4.98EBHL 5/27/2010 6:00:00 20.27 7.42 1297 4.83EBHL 5/27/2010 7:00:00 20.33 7.47 1306 5.33EBHL 5/27/2010 8:00:00 20.18 7.5 1329 5.86EBHL 5/27/2010 9:00:00 20.51 7.58 1345 7.16EBHL 5/27/2010 10:00:00 20.83 7.63 1337 8.14EBHL 5/27/2010 11:00:00 21.88 7.67 1300 9.14EBHL 5/27/2010 12:00:00 21.61 7.61 1265 9.86EBHL 5/27/2010 13:00:00 21.49 7.55 1257 10.41EBHL 5/27/2010 14:00:00 23.37 7.56 1235 11.21

East Branch DuPage River Hidden Lake Page 11 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/27/2010 15:00:00 23.58 7.64 1239 11.85EBHL 5/27/2010 16:00:00 23.97 7.73 1237 12.46EBHL 5/27/2010 17:00:00 24 7.78 1257 12.66EBHL 5/27/2010 18:00:00 23.56 7.8 1277 12.27EBHL 5/27/2010 19:00:00 22.55 7.79 1242 11.47EBHL 5/27/2010 20:00:00 21.7 7.74 1251 10.18EBHL 5/27/2010 21:00:00 20.91 7.62 1233 9.07EBHL 5/27/2010 22:00:00 20.69 7.61 1250 8.56EBHL 5/27/2010 23:00:00 20.39 7.63 1249 8.25EBHL 5/28/2010 0:00:00 20.02 7.6 1240 7.98EBHL 5/28/2010 1:00:00 19.49 7.55 1242 7.57EBHL 5/28/2010 2:00:00 18.98 7.5 1247 7.28EBHL 5/28/2010 3:00:00 18.48 7.47 1256 7EBHL 5/28/2010 4:00:00 18.05 7.44 1259 6.62EBHL 5/28/2010 5:00:00 17.62 7.44 1267 6.25EBHL 5/28/2010 6:00:00 17.3 7.46 1264 6.11EBHL 5/28/2010 7:00:00 17.29 7.5 1270 6.74EBHL 5/28/2010 8:00:00 17.95 7.54 1261 7.65EBHL 5/28/2010 9:00:00 18.78 7.59 1268 8.51EBHL 5/28/2010 10:00:00 19.89 7.64 1256 9.23EBHL 5/28/2010 11:00:00 20.85 7.65 1231 9.67EBHL 5/28/2010 12:00:00 21.85 7.66 1218 10.37EBHL 5/28/2010 13:00:00 22.82 7.61 1196 11.34EBHL 5/28/2010 14:00:00 23.65 7.65 1191 12.14EBHL 5/28/2010 15:00:00 24.43 7.76 1191 12.59EBHL 5/28/2010 16:00:00 24.77 7.83 1201 12.98EBHL 5/28/2010 17:00:00 24.77 7.88 1202 12.98EBHL 5/28/2010 18:00:00 24.17 7.89 1193 12.31EBHL 5/28/2010 19:00:00 23.36 7.85 1190 11.42EBHL 5/28/2010 20:00:00 22.52 7.76 1192 10.03EBHL 5/28/2010 21:00:00 21.95 7.69 1200 8.96EBHL 5/28/2010 22:00:00 21.6 7.64 1207 8.4EBHL 5/28/2010 23:00:00 21.25 7.61 1211 8.06EBHL 5/29/2010 0:00:00 20.87 7.58 1213 7.74EBHL 5/29/2010 1:00:00 20.41 7.54 1217 7.46EBHL 5/29/2010 2:00:00 20.01 7.52 1217 7.17EBHL 5/29/2010 3:00:00 19.49 7.47 1213 6.78EBHL 5/29/2010 4:00:00 19.13 7.44 1211 6.49EBHL 5/29/2010 5:00:00 18.79 7.45 1213 6.18EBHL 5/29/2010 6:00:00 18.54 7.46 1217 5.99EBHL 5/29/2010 7:00:00 18.56 7.48 1221 6.3EBHL 5/29/2010 8:00:00 19.24 7.54 1224 7.44EBHL 5/29/2010 9:00:00 20.21 7.59 1230 8.31EBHL 5/29/2010 10:00:00 21.4 7.63 1234 9.11

East Branch DuPage River Hidden Lake Page 12 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/29/2010 11:00:00 22.68 7.68 1238 10.03EBHL 5/29/2010 12:00:00 23.82 7.73 1223 10.88EBHL 5/29/2010 13:00:00 24.72 7.76 1207 11.82EBHL 5/29/2010 14:00:00 25.6 7.79 1189 12.68EBHL 5/29/2010 15:00:00 25.91 7.78 1149 13.17EBHL 5/29/2010 16:00:00 25.79 7.76 1099 13.38EBHL 5/29/2010 17:00:00 25.75 7.82 1161 13.44EBHL 5/29/2010 18:00:00 25.39 7.87 1158 13.03EBHL 5/29/2010 19:00:00 24.85 7.86 1143 11.92EBHL 5/29/2010 20:00:00 24.37 7.8 1153 10.42EBHL 5/29/2010 21:00:00 24.1 7.78 1154 9.41EBHL 5/29/2010 22:00:00 23.71 7.74 1171 8.74EBHL 5/29/2010 23:00:00 23.32 7.68 1183 8.27EBHL 5/30/2010 0:00:00 22.97 7.67 1190 7.74EBHL 5/30/2010 1:00:00 22.22 7.58 1188 7.26EBHL 5/30/2010 2:00:00 21.72 7.56 1183 6.85EBHL 5/30/2010 3:00:00 21.24 7.54 1185 6.52EBHL 5/30/2010 4:00:00 20.74 7.52 1192 6.3EBHL 5/30/2010 5:00:00 20.38 7.51 1198 6.05EBHL 5/30/2010 6:00:00 20.12 7.52 1198 5.89EBHL 5/30/2010 7:00:00 20.27 7.54 1200 6.27EBHL 5/30/2010 8:00:00 20.88 7.6 1205 7.3EBHL 5/30/2010 9:00:00 21.73 7.69 1216 8.39EBHL 5/30/2010 10:00:00 22.78 7.76 1214 9.19EBHL 5/30/2010 11:00:00 23.97 7.83 1218 10.06EBHL 5/30/2010 12:00:00 25.11 7.91 1213 10.86EBHL 5/30/2010 13:00:00 25.93 7.96 1205 11.83EBHL 5/30/2010 14:00:00 26.55 7.92 1189 12.45EBHL 5/30/2010 15:00:00 27.06 7.88 1189 12.91EBHL 5/30/2010 16:00:00 26.91 7.8 1176 13.04EBHL 5/30/2010 17:00:00 26.81 7.77 1170 12.93EBHL 5/30/2010 18:00:00 26.19 7.73 1162 12.24EBHL 5/30/2010 19:00:00 25.41 7.68 1165 11.02EBHL 5/30/2010 20:00:00 24.87 7.65 1170 9.31EBHL 5/30/2010 21:00:00 24.32 7.57 1167 8.05EBHL 5/30/2010 22:00:00 23.95 7.54 1170 7.41EBHL 5/30/2010 23:00:00 23.62 7.54 1177 7.05EBHL 5/31/2010 0:00:00 23.29 7.51 1193 6.74EBHL 5/31/2010 1:00:00 22.94 7.48 1203 6.43EBHL 5/31/2010 2:00:00 22.61 7.45 1208 6.11EBHL 5/31/2010 3:00:00 22.3 7.43 1207 5.85EBHL 5/31/2010 4:00:00 21.98 7.41 1205 5.63EBHL 5/31/2010 5:00:00 21.72 7.41 1209 5.32EBHL 5/31/2010 6:00:00 21.49 7.41 1212 5.14

East Branch DuPage River Hidden Lake Page 13 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 5/31/2010 7:00:00 21.64 7.43 1221 5.48EBHL 5/31/2010 8:00:00 22.21 7.47 1226 6.33EBHL 5/31/2010 9:00:00 22.61 7.52 1228 7.15EBHL 5/31/2010 10:00:00 23.6 7.58 1239 8.07EBHL 5/31/2010 11:00:00 24.16 7.63 1239 8.72EBHL 5/31/2010 12:00:00 21.79 7.84 1086 7.88EBHL 5/31/2010 13:00:00 21.66 7.38 510 6.63EBHL 5/31/2010 14:00:00 21.38 7.37 540 6.66EBHL 5/31/2010 15:00:00 21.45 7.29 751 6.96EBHL 5/31/2010 16:00:00 22.16 7.35 834 6.75EBHL 5/31/2010 17:00:00 21.71 7.12 775 6.61EBHL 5/31/2010 18:00:00 21.76 7.12 811 6.24EBHL 5/31/2010 19:00:00 21.56 7.1 809 5.8EBHL 5/31/2010 20:00:00 21.59 7.14 799 5.24EBHL 5/31/2010 21:00:00 21.63 7.21 805 4.34EBHL 5/31/2010 22:00:00 21.43 7.2 819 3.97EBHL 5/31/2010 23:00:00 21.11 7.15 835 3.88EBHL 6/1/2010 0:00:00 20.79 7.11 851 3.87EBHL 6/1/2010 1:00:00 20.57 7.09 863 3.88EBHL 6/1/2010 2:00:00 20.38 7.08 866 3.89EBHL 6/1/2010 3:00:00 20.19 7.07 861 4.06EBHL 6/1/2010 4:00:00 20.09 7.08 870 4.28EBHL 6/1/2010 5:00:00 19.97 7.08 874 4.6EBHL 6/1/2010 6:00:00 19.81 7.1 883 4.79EBHL 6/1/2010 7:00:00 19.91 7.13 885 4.9EBHL 6/1/2010 8:00:00 19.93 7.13 883 5.35EBHL 6/1/2010 9:00:00 20.12 7.16 886 5.57EBHL 6/1/2010 11:00:00 21.43 7.81 894 6.64EBHL 6/1/2010 12:00:00 22.16 7.73 900 7.1EBHL 6/1/2010 13:00:00 22.67 7.73 902 7.47EBHL 6/1/2010 14:00:00 23.53 7.75 905 8EBHL 6/1/2010 15:00:00 24.01 7.78 909 8.26EBHL 6/1/2010 16:00:00 24.49 7.81 914 8.56EBHL 6/1/2010 17:00:00 24.7 7.82 922 8.44EBHL 6/1/2010 18:00:00 24.47 7.79 928 8.23EBHL 6/1/2010 19:00:00 24.11 7.75 939 7.79EBHL 6/1/2010 20:00:00 23.88 7.72 952 7.29EBHL 6/1/2010 21:00:00 23.6 7.69 964 6.84EBHL 6/1/2010 22:00:00 23.29 7.64 977 6.59EBHL 6/1/2010 23:00:00 22.94 7.59 984 6.33EBHL 6/2/2010 0:00:00 22.65 7.54 992 6.02EBHL 6/2/2010 1:00:00 22.3 7.51 1004 5.78EBHL 6/2/2010 2:00:00 22.1 7.52 1011 5.59EBHL 6/2/2010 3:00:00 21.98 7.63 999 5.95

East Branch DuPage River Hidden Lake Page 14 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/2/2010 4:00:00 21.07 7.56 925 6.39EBHL 6/2/2010 5:00:00 20.79 7.61 506 6.81EBHL 6/2/2010 7:00:00 20.27 7.48 423 7.12EBHL 6/2/2010 8:00:00 20.76 7.57 585 5.94EBHL 6/2/2010 9:00:00 20.93 7.51 593 5.81EBHL 6/2/2010 10:00:00 21.04 7.44 615 5.9EBHL 6/2/2010 11:00:00 21.24 7.42 614 5.89EBHL 6/2/2010 12:00:00 21.32 7.43 591 5.66EBHL 6/2/2010 13:00:00 21.58 7.42 641 5.79EBHL 6/2/2010 14:00:00 21.73 7.44 645 5.58EBHL 6/2/2010 15:00:00 21.88 7.42 665 5.62EBHL 6/2/2010 16:00:00 22.03 7.42 666 5.48EBHL 6/2/2010 17:00:00 22.16 7.42 673 5.48EBHL 6/2/2010 18:00:00 22.08 7.41 672 5.32EBHL 6/2/2010 19:00:00 22.13 7.4 680 4.86EBHL 6/2/2010 20:00:00 22.08 7.39 679 4.72EBHL 6/2/2010 21:00:00 21.78 7.38 674 5.09EBHL 6/2/2010 22:00:00 21.7 7.39 678 4.95EBHL 6/2/2010 23:00:00 21.43 7.42 695 5EBHL 6/3/2010 0:00:00 21.3 7.45 711 5.08EBHL 6/3/2010 1:00:00 21.14 7.46 719 5.16EBHL 6/3/2010 2:00:00 20.96 7.48 737 5.2EBHL 6/3/2010 3:00:00 20.77 7.48 746 5.27EBHL 6/3/2010 4:00:00 20.59 7.49 758 5.17EBHL 6/3/2010 5:00:00 20.42 7.49 770 5.16EBHL 6/3/2010 6:00:00 20.3 7.51 783 5.09EBHL 6/3/2010 7:00:00 20.17 7.52 792 5.04EBHL 6/3/2010 8:00:00 20.11 7.52 806 5.07EBHL 6/3/2010 9:00:00 20.14 7.54 824 5.41EBHL 6/3/2010 10:00:00 20.34 7.54 839 5.64EBHL 6/3/2010 11:00:00 20.67 7.55 849 5.97EBHL 6/3/2010 12:00:00 21.13 7.56 858 6.35EBHL 6/3/2010 13:00:00 21.56 7.57 871 6.79EBHL 6/3/2010 14:00:00 21.86 7.57 882 7.32EBHL 6/3/2010 15:00:00 22.14 7.57 891 7.67EBHL 6/3/2010 16:00:00 22.38 7.56 897 7.85EBHL 6/3/2010 17:00:00 22.43 7.55 906 7.91EBHL 6/3/2010 18:00:00 22.64 7.6 904 7.62EBHL 6/3/2010 19:00:00 22.74 7.64 903 7.29EBHL 6/3/2010 20:00:00 21.73 7.51 920 7.4EBHL 6/3/2010 21:00:00 21.35 7.47 922 7.4EBHL 6/3/2010 22:00:00 21.11 7.47 919 7.28EBHL 6/3/2010 23:00:00 20.83 7.46 920 7.16EBHL 6/4/2010 0:00:00 20.78 7.49 919 6.79

East Branch DuPage River Hidden Lake Page 15 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/4/2010 1:00:00 20.65 7.53 921 6.58EBHL 6/4/2010 2:00:00 20.51 7.53 925 6.48EBHL 6/4/2010 3:00:00 20.34 7.53 933 6.37EBHL 6/4/2010 4:00:00 20.2 7.53 941 6.25EBHL 6/4/2010 5:00:00 20.01 7.53 949 6.16EBHL 6/4/2010 6:00:00 19.93 7.51 950 6.09EBHL 6/4/2010 7:00:00 19.97 7.53 946 6.09EBHL 6/4/2010 8:00:00 20.03 7.54 947 6.3EBHL 6/4/2010 9:00:00 20.13 7.54 950 6.6EBHL 6/4/2010 10:00:00 20.03 7.53 954 6.76EBHL 6/4/2010 11:00:00 20.47 7.51 959 7.34EBHL 6/4/2010 12:00:00 21.01 7.53 964 7.8EBHL 6/4/2010 13:00:00 21.42 7.54 973 8.23EBHL 6/4/2010 14:00:00 21.84 7.56 978 8.69EBHL 6/4/2010 15:00:00 22.13 7.62 987 8.81EBHL 6/4/2010 16:00:00 22.29 7.63 997 8.99EBHL 6/4/2010 17:00:00 22.86 7.7 1003 9.05EBHL 6/4/2010 18:00:00 22.22 7.66 997 8.65EBHL 6/4/2010 19:00:00 22.03 7.62 1001 8.33EBHL 6/4/2010 20:00:00 22.26 7.59 945 7.55EBHL 6/4/2010 21:00:00 21.88 7.58 963 7.39EBHL 6/4/2010 22:00:00 21.64 7.54 983 7.21EBHL 6/4/2010 23:00:00 21.48 7.49 980 6.83EBHL 6/5/2010 0:00:00 21.28 7.47 974 6.56EBHL 6/5/2010 1:00:00 21.02 7.45 993 6.49EBHL 6/5/2010 2:00:00 20.82 7.45 1006 6.35EBHL 6/5/2010 3:00:00 20.65 7.45 1014 6.24EBHL 6/5/2010 4:00:00 20.5 7.44 1022 6.07EBHL 6/5/2010 5:00:00 20.47 7.45 1023 5.99EBHL 6/5/2010 6:00:00 20.44 7.42 1021 5.91EBHL 6/5/2010 7:00:00 20.51 7.42 1023 6.01EBHL 6/5/2010 8:00:00 20.61 7.43 1028 6.09EBHL 6/5/2010 9:00:00 20.55 7.42 1032 6.03EBHL 6/5/2010 10:00:00 20.5 7.48 1011 6.25EBHL 6/5/2010 11:00:00 20.57 7.46 826 6.65EBHL 6/5/2010 12:00:00 20.94 7.46 534 6.94EBHL 6/5/2010 13:00:00 21.21 7.39 723 7.19EBHL 6/5/2010 14:00:00 21.32 7.27 653 7.09EBHL 6/5/2010 15:00:00 21.43 7.38 636 6.63EBHL 6/5/2010 16:00:00 21.58 7.34 630 6.46EBHL 6/5/2010 17:00:00 21.59 7.32 630 6.29EBHL 6/5/2010 18:00:00 21.39 7.3 658 6.13EBHL 6/5/2010 19:00:00 21.21 7.28 678 6EBHL 6/5/2010 20:00:00 21.02 7.25 702 5.81

East Branch DuPage River Hidden Lake Page 16 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/5/2010 21:00:00 21.02 7.28 707 5.52EBHL 6/5/2010 22:00:00 20.84 7.25 698 5.64EBHL 6/5/2010 23:00:00 20.71 7.24 693 5.49EBHL 6/6/2010 0:00:00 20.49 7.23 694 5.29EBHL 6/6/2010 1:00:00 20.33 7.24 691 5.31EBHL 6/6/2010 2:00:00 20.14 7.26 690 5.3EBHL 6/6/2010 3:00:00 19.97 7.31 691 5.25EBHL 6/6/2010 4:00:00 19.89 7.36 700 5.08EBHL 6/6/2010 5:00:00 19.66 7.37 712 5.26EBHL 6/6/2010 6:00:00 19.45 7.35 727 5.44EBHL 6/6/2010 7:00:00 19.35 7.35 741 5.51EBHL 6/6/2010 8:00:00 19.35 7.35 758 5.57EBHL 6/6/2010 9:00:00 19.49 7.37 768 5.74EBHL 6/6/2010 10:00:00 19.85 7.4 781 5.88EBHL 6/6/2010 11:00:00 20.16 7.42 798 6.32EBHL 6/6/2010 12:00:00 20.64 7.45 812 6.6EBHL 6/6/2010 13:00:00 20.91 7.47 822 6.86EBHL 6/6/2010 14:00:00 20.94 7.5 829 6.94EBHL 6/6/2010 15:00:00 21.44 7.5 840 7.3EBHL 6/6/2010 16:00:00 21.12 7.47 850 7.14EBHL 6/6/2010 17:00:00 21.28 7.45 839 7.14EBHL 6/6/2010 18:00:00 21.25 7.43 851 7.14EBHL 6/6/2010 19:00:00 20.96 7.41 858 6.99EBHL 6/6/2010 20:00:00 20.79 7.39 855 6.95EBHL 6/6/2010 21:00:00 20.56 7.39 862 6.75EBHL 6/6/2010 22:00:00 20.39 7.39 858 6.61EBHL 6/6/2010 23:00:00 20.1 7.39 867 6.59EBHL 6/7/2010 0:00:00 19.95 7.4 871 6.42EBHL 6/7/2010 1:00:00 19.77 7.41 880 6.37EBHL 6/7/2010 2:00:00 19.55 7.4 886 6.34EBHL 6/7/2010 3:00:00 19.31 7.4 892 6.29EBHL 6/7/2010 4:00:00 19.14 7.41 897 6.2EBHL 6/7/2010 5:00:00 18.93 7.41 899 6.11EBHL 6/7/2010 6:00:00 18.78 7.42 906 6.11EBHL 6/7/2010 7:00:00 18.74 7.43 910 6.22EBHL 6/7/2010 8:00:00 18.96 7.44 906 6.36EBHL 6/7/2010 9:00:00 19.19 7.44 912 6.64EBHL 6/7/2010 10:00:00 19.63 7.44 918 6.96EBHL 6/7/2010 11:00:00 20.2 7.56 955 7.38EBHL 6/7/2010 12:00:00 20.51 7.6 965 7.53EBHL 6/7/2010 13:00:00 20.59 7.59 975 7.92EBHL 6/7/2010 14:00:00 20.92 7.6 982 8.01EBHL 6/7/2010 15:00:00 21.89 7.62 994 8.36EBHL 6/7/2010 16:00:00 21.77 7.61 999 8.41

East Branch DuPage River Hidden Lake Page 17 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/7/2010 17:00:00 21.74 7.63 1004 8.48EBHL 6/7/2010 18:00:00 21.54 7.61 1010 8.43EBHL 6/7/2010 19:00:00 21.07 7.58 1015 8.12EBHL 6/7/2010 20:00:00 20.5 7.55 1015 7.81EBHL 6/7/2010 21:00:00 20.25 7.52 1017 7.56EBHL 6/7/2010 22:00:00 19.82 7.49 1013 7.49EBHL 6/7/2010 23:00:00 19.48 7.46 1011 7.32EBHL 6/8/2010 0:00:00 19.14 7.43 1013 7.13EBHL 6/8/2010 1:00:00 18.98 7.44 1012 6.95EBHL 6/8/2010 2:00:00 18.75 7.42 1012 6.87EBHL 6/8/2010 3:00:00 18.58 7.41 1014 6.72EBHL 6/8/2010 4:00:00 18.5 7.42 1019 6.59EBHL 6/8/2010 5:00:00 18.58 7.46 1024 6.34EBHL 6/8/2010 6:00:00 18.54 7.46 1030 6.28EBHL 6/8/2010 7:00:00 18.44 7.46 1036 6.28EBHL 6/8/2010 8:00:00 18.42 7.46 1036 6.36EBHL 6/8/2010 9:00:00 18.46 7.49 1035 6.54EBHL 6/8/2010 10:00:00 18.48 7.49 1032 6.8EBHL 6/8/2010 11:00:00 18.51 7.47 1030 7.07EBHL 6/8/2010 12:00:00 18.66 7.46 1048 7.43EBHL 6/8/2010 13:00:00 18.51 7.44 1046 7.48EBHL 6/8/2010 14:00:00 18.57 7.42 1033 7.64EBHL 6/8/2010 15:00:00 18.64 7.46 1029 7.7EBHL 6/8/2010 16:00:00 18.45 7.45 1015 7.63EBHL 6/8/2010 17:00:00 18.45 7.48 1009 7.48EBHL 6/8/2010 18:00:00 18.42 7.48 1004 7.55EBHL 6/8/2010 19:00:00 18.31 7.43 982 7.41EBHL 6/8/2010 20:00:00 18.2 7.35 962 7.36EBHL 6/8/2010 21:00:00 18.08 7.21 976 7.44EBHL 6/8/2010 22:00:00 18.02 7.16 981 7.23EBHL 6/8/2010 23:00:00 17.98 7.15 989 7.09EBHL 6/9/2010 0:00:00 17.96 7.21 989 6.84EBHL 6/9/2010 1:00:00 17.99 7.28 985 6.7EBHL 6/9/2010 2:00:00 18.02 7.31 982 6.63EBHL 6/9/2010 3:00:00 18.09 7.33 978 6.56EBHL 6/9/2010 4:00:00 18.14 7.35 978 6.5EBHL 6/9/2010 5:00:00 18.19 7.37 979 6.41EBHL 6/9/2010 6:00:00 18.14 7.36 977 6.39EBHL 6/9/2010 7:00:00 18.19 7.39 1000 6.54EBHL 6/9/2010 8:00:00 18.36 7.44 1004 6.76EBHL 6/9/2010 9:00:00 18.76 7.46 1013 7.05EBHL 6/9/2010 10:00:00 19.27 7.47 1025 7.41EBHL 6/9/2010 11:00:00 19.81 7.47 1031 7.8EBHL 6/9/2010 12:00:00 20.68 7.49 1034 8.2

East Branch DuPage River Hidden Lake Page 18 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/9/2010 13:00:00 21.5 7.53 1034 8.47EBHL 6/9/2010 14:00:00 21.92 7.55 1028 8.57EBHL 6/9/2010 15:00:00 22.49 7.59 1032 8.6EBHL 6/9/2010 16:00:00 22.71 7.61 1031 8.68EBHL 6/9/2010 17:00:00 22.57 7.59 1031 8.62EBHL 6/9/2010 18:00:00 22.28 7.58 1036 8.34EBHL 6/9/2010 19:00:00 21.84 7.54 1042 7.87EBHL 6/9/2010 20:00:00 21.37 7.5 1043 7.48EBHL 6/9/2010 21:00:00 21.12 7.31 1052 7.18EBHL 6/9/2010 22:00:00 20.87 7.26 1060 6.98EBHL 6/9/2010 23:00:00 20.83 7.2 1072 6.66EBHL 6/10/2010 0:00:00 20.13 7.14 1057 6.7EBHL 6/10/2010 1:00:00 19.72 7.13 1058 6.6EBHL 6/10/2010 2:00:00 19.39 7.14 1061 6.46EBHL 6/10/2010 3:00:00 19.07 7.17 1061 6.38EBHL 6/10/2010 4:00:00 18.89 7.19 1065 6.22EBHL 6/10/2010 5:00:00 18.69 7.19 1065 6.16EBHL 6/10/2010 6:00:00 18.47 7.2 1066 6.19EBHL 6/10/2010 7:00:00 18.69 7.22 1071 6.37EBHL 6/10/2010 8:00:00 19.06 7.26 1080 6.64EBHL 6/10/2010 9:00:00 19.56 7.32 1089 6.9EBHL 6/10/2010 10:00:00 20.08 7.35 1086 7.19EBHL 6/10/2010 11:00:00 20.75 7.37 1080 7.65EBHL 6/10/2010 12:00:00 21.58 7.38 1070 8.11EBHL 6/10/2010 13:00:00 21.85 7.39 1074 8.35EBHL 6/10/2010 14:00:00 22.58 7.5 1076 8.6EBHL 6/10/2010 15:00:00 22.75 7.52 1074 8.78EBHL 6/10/2010 16:00:00 22.49 7.51 1071 8.7EBHL 6/10/2010 17:00:00 21.86 7.45 1068 8.52EBHL 6/10/2010 18:00:00 22.08 7.5 1079 8.35EBHL 6/10/2010 19:00:00 21.84 7.49 1088 8.03EBHL 6/10/2010 20:00:00 21.46 7.47 1097 7.7EBHL 6/10/2010 21:00:00 21.22 7.45 1105 7.32EBHL 6/10/2010 22:00:00 21.02 7.43 1106 7.08EBHL 6/10/2010 23:00:00 20.73 7.42 1101 6.88EBHL 6/11/2010 0:00:00 20.39 7.41 1095 6.73EBHL 6/11/2010 1:00:00 20.18 7.39 1090 6.58EBHL 6/11/2010 2:00:00 19.89 7.38 1085 6.47EBHL 6/11/2010 3:00:00 19.67 7.37 1085 6.35EBHL 6/11/2010 4:00:00 19.45 7.37 1087 6.24EBHL 6/11/2010 5:00:00 19.37 7.39 1095 6.07EBHL 6/11/2010 6:00:00 19.33 7.4 1099 5.94EBHL 6/11/2010 7:00:00 19.39 7.41 1106 6.04EBHL 6/11/2010 8:00:00 19.98 7.44 1121 6.54

East Branch DuPage River Hidden Lake Page 19 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/11/2010 9:00:00 20.37 7.46 1132 6.98EBHL 6/11/2010 10:00:00 21.04 7.47 1142 7.44EBHL 6/11/2010 11:00:00 21.89 7.49 1144 7.74EBHL 6/11/2010 12:00:00 22.05 7.48 1116 8EBHL 6/11/2010 13:00:00 21.76 7.44 1095 8.06EBHL 6/11/2010 14:00:00 22.02 7.49 1121 8.03EBHL 6/11/2010 15:00:00 23.98 7.49 872 7.19EBHL 6/11/2010 16:00:00 24.57 7.58 813 7.24EBHL 6/11/2010 17:00:00 24.53 7.62 896 6.75EBHL 6/11/2010 18:00:00 24.43 7.6 874 6.32EBHL 6/11/2010 19:00:00 24.38 7.59 878 6.53EBHL 6/11/2010 20:00:00 23.98 7.56 903 6.44EBHL 6/11/2010 21:00:00 23.61 7.52 951 6.39EBHL 6/11/2010 22:00:00 23.34 7.51 989 6.39EBHL 6/11/2010 23:00:00 22.99 7.51 1008 6.25EBHL 6/12/2010 0:00:00 22.73 7.49 1024 6.08EBHL 6/12/2010 1:00:00 22.67 7.51 1046 5.85EBHL 6/12/2010 2:00:00 22.16 7.45 1037 5.88EBHL 6/12/2010 3:00:00 22.02 7.44 1044 5.71EBHL 6/12/2010 4:00:00 21.92 7.45 1051 5.55EBHL 6/12/2010 5:00:00 21.82 7.45 1062 5.45EBHL 6/12/2010 6:00:00 21.8 7.46 1073 5.33EBHL 6/12/2010 7:00:00 21.84 7.48 1083 5.36EBHL 6/12/2010 8:00:00 21.93 7.49 1095 5.53EBHL 6/12/2010 9:00:00 22.02 7.51 1108 5.88EBHL 6/12/2010 10:00:00 21.84 7.51 1118 5.88EBHL 6/12/2010 11:00:00 21.58 7.53 1107 6.22EBHL 6/12/2010 12:00:00 21.51 7.5 1104 6.45EBHL 6/12/2010 13:00:00 21.6 7.48 1094 7.02EBHL 6/12/2010 14:00:00 22.44 7.5 1055 7.55EBHL 6/12/2010 15:00:00 22.96 7.53 1018 8.02EBHL 6/12/2010 16:00:00 22.72 7.49 999 8.49EBHL 6/12/2010 17:00:00 21.99 7.46 1011 7.78EBHL 6/12/2010 18:00:00 21.85 7.46 988 7.55EBHL 6/12/2010 19:00:00 21.93 7.44 984 7.47EBHL 6/12/2010 20:00:00 21.7 7.45 1010 7.22EBHL 6/12/2010 21:00:00 21.22 7.41 1043 6.86EBHL 6/12/2010 22:00:00 21.06 7.41 1048 6.72EBHL 6/12/2010 23:00:00 20.8 7.41 1050 6.63EBHL 6/13/2010 0:00:00 20.58 7.4 1049 6.53EBHL 6/13/2010 1:00:00 20.34 7.38 1049 6.36EBHL 6/13/2010 2:00:00 20.1 7.38 1049 6.27EBHL 6/13/2010 3:00:00 19.97 7.38 1049 6.17EBHL 6/13/2010 4:00:00 19.76 7.39 1053 6.02

East Branch DuPage River Hidden Lake Page 20 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/13/2010 5:00:00 19.68 7.39 1056 5.86EBHL 6/13/2010 6:00:00 19.6 7.4 1063 5.8EBHL 6/13/2010 7:00:00 19.57 7.41 1073 5.81EBHL 6/13/2010 8:00:00 19.61 7.42 1078 6.06EBHL 6/13/2010 9:00:00 19.62 7.44 1087 6.35EBHL 6/13/2010 10:00:00 20.01 7.47 1098 6.81EBHL 6/13/2010 11:00:00 20.24 7.48 1103 7.21EBHL 6/13/2010 12:00:00 20.49 7.48 1099 7.61EBHL 6/13/2010 13:00:00 21.16 7.48 1089 8.1EBHL 6/13/2010 14:00:00 21.43 7.47 1081 8.34EBHL 6/13/2010 15:00:00 21.1 7.49 1080 8.28EBHL 6/13/2010 16:00:00 20.69 7.43 1046 8.27EBHL 6/13/2010 17:00:00 21.34 7.46 1067 8.51EBHL 6/13/2010 18:00:00 21.05 7.49 1129 8.33EBHL 6/13/2010 19:00:00 21.08 7.47 1074 8.09EBHL 6/13/2010 20:00:00 20.93 7.46 1076 7.67EBHL 6/13/2010 21:00:00 20.87 7.47 1071 7.43EBHL 6/13/2010 22:00:00 20.79 7.44 1083 7.11EBHL 6/13/2010 23:00:00 20.53 7.43 1094 7.02EBHL 6/14/2010 0:00:00 20.45 7.39 883 6.87EBHL 6/14/2010 1:00:00 20.29 7.36 911 6.64EBHL 6/14/2010 2:00:00 20.21 7.39 987 6.38EBHL 6/14/2010 3:00:00 19.8 7.29 1003 6.54EBHL 6/14/2010 4:00:00 19.77 7.28 982 6.35EBHL 6/14/2010 5:00:00 19.73 7.29 962 6.21EBHL 6/14/2010 6:00:00 19.7 7.3 968 6.08EBHL 6/14/2010 7:00:00 19.77 7.32 983 6.1EBHL 6/14/2010 8:00:00 19.94 7.34 1000 6.24EBHL 6/14/2010 9:00:00 20.24 7.35 1008 6.54EBHL 6/14/2010 10:00:00 20.31 7.37 1013 6.77EBHL 6/14/2010 11:00:00 20.23 7.38 1021 6.89EBHL 6/14/2010 12:00:00 20.14 7.33 1032 7.2EBHL 6/14/2010 13:00:00 20.42 7.36 1040 7.45EBHL 6/14/2010 14:00:00 20.72 7.39 1043 7.78EBHL 6/14/2010 15:00:00 20.6 7.39 1035 7.94EBHL 6/14/2010 16:00:00 20.81 7.42 1037 8.14EBHL 6/14/2010 17:00:00 21.15 7.45 1037 8.35EBHL 6/14/2010 18:00:00 21.02 7.47 1039 8.39EBHL 6/14/2010 19:00:00 20.89 7.48 1045 8.26EBHL 6/14/2010 20:00:00 20.56 7.47 1050 7.93EBHL 6/14/2010 21:00:00 20.29 7.44 1054 7.49EBHL 6/14/2010 22:00:00 20.03 7.43 1061 7.28EBHL 6/14/2010 23:00:00 19.84 7.41 1060 7.08EBHL 6/15/2010 0:00:00 19.56 7.38 1059 6.92

East Branch DuPage River Hidden Lake Page 21 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/15/2010 1:00:00 19.34 7.35 1056 6.75EBHL 6/15/2010 2:00:00 19.09 7.34 1058 6.61EBHL 6/15/2010 3:00:00 18.94 7.34 1060 6.47EBHL 6/15/2010 4:00:00 18.79 7.34 1063 6.33EBHL 6/15/2010 5:00:00 18.68 7.36 1067 6.23EBHL 6/15/2010 6:00:00 18.57 7.37 1080 6.16EBHL 6/15/2010 7:00:00 18.57 7.4 1094 6.33EBHL 6/15/2010 8:00:00 18.77 7.43 1100 6.67EBHL 6/15/2010 9:00:00 19.23 7.46 1098 7.05EBHL 6/15/2010 10:00:00 20.19 7.47 1087 7.41EBHL 6/15/2010 11:00:00 19.99 7.46 1074 7.57EBHL 6/15/2010 12:00:00 20.63 7.44 1063 8.03EBHL 6/15/2010 13:00:00 20.77 7.42 1054 8.19EBHL 6/15/2010 14:00:00 20.64 7.42 1053 8.05EBHL 6/15/2010 15:00:00 20.79 7.42 1052 8.06EBHL 6/15/2010 16:00:00 21.21 7.44 1054 8.25EBHL 6/15/2010 17:00:00 21.28 7.45 1055 8.27EBHL 6/15/2010 18:00:00 21.08 7.45 1050 7.92EBHL 6/15/2010 19:00:00 21.51 7.43 957 7.26EBHL 6/15/2010 20:00:00 21.67 7.39 774 7.02EBHL 6/15/2010 21:00:00 21.45 7.36 746 6.94EBHL 6/15/2010 22:00:00 21.25 7.37 872 6.96EBHL 6/15/2010 23:00:00 20.93 7.29 850 6.77EBHL 6/16/2010 0:00:00 20.73 7.23 792 6.48EBHL 6/16/2010 1:00:00 20.24 7.12 843 6.62EBHL 6/16/2010 2:00:00 20.09 7.1 839 6.44EBHL 6/16/2010 3:00:00 20.16 7.15 875 6.43EBHL 6/16/2010 4:00:00 20.19 7.19 897 6.45EBHL 6/16/2010 5:00:00 20.12 7.23 873 6.44EBHL 6/16/2010 6:00:00 19.99 7.22 826 6.36EBHL 6/16/2010 7:00:00 20.06 7.28 782 6.03EBHL 6/16/2010 8:00:00 20.23 7.33 745 5.8EBHL 6/16/2010 9:00:00 20.42 7.34 711 5.74EBHL 6/16/2010 10:00:00 20.73 7.33 690 5.89EBHL 6/16/2010 11:00:00 21.22 7.32 677 6.01EBHL 6/16/2010 12:00:00 21.77 7.32 671 6.12EBHL 6/16/2010 13:00:00 22.19 7.34 667 6.25EBHL 6/16/2010 14:00:00 22.43 7.35 669 6.28EBHL 6/16/2010 15:00:00 22.79 7.38 667 6.41EBHL 6/16/2010 16:00:00 23.27 7.4 669 6.43EBHL 6/16/2010 17:00:00 23.14 7.42 673 6.46EBHL 6/16/2010 18:00:00 23.43 7.44 682 6.58EBHL 6/16/2010 19:00:00 23.44 7.46 691 6.57EBHL 6/16/2010 20:00:00 23.28 7.47 699 6.57

East Branch DuPage River Hidden Lake Page 22 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/16/2010 21:00:00 23.16 7.46 708 6.48EBHL 6/16/2010 22:00:00 23.03 7.47 722 6.39EBHL 6/16/2010 23:00:00 22.97 7.46 729 6.29EBHL 6/17/2010 0:00:00 22.8 7.46 736 6.34EBHL 6/17/2010 1:00:00 22.64 7.45 742 6.27EBHL 6/17/2010 2:00:00 22.47 7.44 749 6.2EBHL 6/17/2010 3:00:00 22.3 7.44 755 6.11EBHL 6/17/2010 4:00:00 22.14 7.44 759 6.06EBHL 6/17/2010 5:00:00 21.94 7.43 765 5.95EBHL 6/17/2010 6:00:00 21.72 7.43 775 5.85EBHL 6/17/2010 7:00:00 21.62 7.44 783 6.02EBHL 6/17/2010 8:00:00 21.75 7.46 789 6.22EBHL 6/17/2010 9:00:00 22.24 7.53 787 6.31EBHL 6/17/2010 10:00:00 22.85 7.62 782 6.62EBHL 6/17/2010 11:00:00 23.07 7.55 793 7.3EBHL 6/17/2010 12:00:00 23.31 7.5 805 7.84EBHL 6/17/2010 13:00:00 23.68 7.53 816 8.42EBHL 6/17/2010 14:00:00 24.36 7.55 820 8.8EBHL 6/17/2010 15:00:00 24.36 7.57 826 8.84EBHL 6/17/2010 16:00:00 24.68 7.6 833 9.04EBHL 6/17/2010 17:00:00 24.9 7.63 845 9.17EBHL 6/17/2010 18:00:00 24.86 7.71 850 9.17EBHL 6/17/2010 19:00:00 24.5 7.71 851 8.87EBHL 6/17/2010 20:00:00 24.25 7.67 848 8.41EBHL 6/17/2010 21:00:00 23.96 7.64 852 8.03EBHL 6/17/2010 22:00:00 23.64 7.62 850 7.82EBHL 6/17/2010 23:00:00 23.31 7.58 852 7.52EBHL 6/18/2010 0:00:00 23.06 7.56 851 7.23EBHL 6/18/2010 1:00:00 22.83 7.52 853 6.97EBHL 6/18/2010 2:00:00 22.63 7.5 855 6.76EBHL 6/18/2010 3:00:00 22.52 7.49 851 6.6EBHL 6/18/2010 4:00:00 22.51 7.48 855 6.4EBHL 6/18/2010 5:00:00 22.46 7.53 854 6.43EBHL 6/18/2010 6:00:00 22.34 7.49 864 6.12EBHL 6/18/2010 7:00:00 22.14 7.54 934 6.23EBHL 6/18/2010 8:00:00 22.34 7.51 841 6.46EBHL 6/18/2010 9:00:00 22.81 7.57 859 7.03EBHL 6/18/2010 10:00:00 23.43 7.58 871 7.55EBHL 6/18/2010 11:00:00 23.89 7.57 885 8.08EBHL 6/18/2010 12:00:00 24.65 7.6 879 8.71EBHL 6/18/2010 13:00:00 25.33 7.63 874 9.29EBHL 6/18/2010 14:00:00 25.93 7.67 869 9.66EBHL 6/18/2010 15:00:00 26.21 7.69 863 9.75EBHL 6/18/2010 16:00:00 25.5 7.66 863 9.01

East Branch DuPage River Hidden Lake Page 23 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/18/2010 17:00:00 24.74 7.67 844 8.11EBHL 6/18/2010 18:00:00 24.31 7.6 699 7.32EBHL 6/18/2010 19:00:00 24.14 7.56 635 7.14EBHL 6/18/2010 20:00:00 24.16 7.52 678 6.76EBHL 6/18/2010 21:00:00 23.74 7.5 745 6.33EBHL 6/18/2010 22:00:00 23.03 7.44 710 5.95EBHL 6/18/2010 23:00:00 22.9 7.4 721 6EBHL 6/19/2010 0:00:00 22.42 7.39 635 6.03EBHL 6/19/2010 1:00:00 22.06 7.28 659 6.18EBHL 6/19/2010 2:00:00 22.05 7.26 661 6.17EBHL 6/19/2010 3:00:00 22.09 7.27 682 6.14EBHL 6/19/2010 4:00:00 22.1 7.26 692 6.05EBHL 6/19/2010 5:00:00 21.96 7.26 688 5.95EBHL 6/19/2010 6:00:00 21.85 7.29 685 5.87EBHL 6/19/2010 7:00:00 21.77 7.27 684 5.82EBHL 6/19/2010 8:00:00 21.88 7.3 684 5.63EBHL 6/19/2010 9:00:00 21.95 7.27 682 5.64EBHL 6/19/2010 10:00:00 22.24 7.31 676 5.63EBHL 6/19/2010 11:00:00 22.44 7.3 672 6.11EBHL 6/19/2010 12:00:00 22.83 7.32 669 6.29EBHL 6/19/2010 13:00:00 23.22 7.34 667 6.48EBHL 6/19/2010 14:00:00 23.62 7.37 696 6.58EBHL 6/19/2010 15:00:00 23.97 7.37 699 6.58EBHL 6/19/2010 16:00:00 24.13 7.38 699 6.56EBHL 6/19/2010 17:00:00 24.21 7.39 697 6.51EBHL 6/19/2010 18:00:00 24.32 7.43 694 6.36EBHL 6/19/2010 19:00:00 23.97 7.42 698 6.24EBHL 6/19/2010 20:00:00 23.86 7.4 703 6.06EBHL 6/19/2010 21:00:00 23.67 7.39 708 5.91EBHL 6/19/2010 22:00:00 23.44 7.38 714 5.77EBHL 6/19/2010 23:00:00 23.43 7.41 716 5.47EBHL 6/20/2010 0:00:00 23.29 7.41 722 5.4EBHL 6/20/2010 1:00:00 23.14 7.4 728 5.3EBHL 6/20/2010 2:00:00 22.98 7.39 735 5.21EBHL 6/20/2010 3:00:00 22.81 7.39 739 5.12EBHL 6/20/2010 4:00:00 22.65 7.39 745 5.03EBHL 6/20/2010 5:00:00 22.46 7.39 754 5EBHL 6/20/2010 6:00:00 22.27 7.39 762 4.97EBHL 6/20/2010 7:00:00 22.32 7.39 766 5.1EBHL 6/20/2010 8:00:00 22.32 7.4 772 5.2EBHL 6/20/2010 9:00:00 22.19 7.4 778 5.26EBHL 6/20/2010 10:00:00 22.31 7.41 792 5.65EBHL 6/20/2010 11:00:00 22.87 7.42 800 6.09EBHL 6/20/2010 12:00:00 22.91 7.41 809 6.33

East Branch DuPage River Hidden Lake Page 24 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/20/2010 13:00:00 23.03 7.36 815 6.96EBHL 6/20/2010 14:00:00 23.34 7.39 824 7.37EBHL 6/20/2010 15:00:00 23.95 7.42 826 7.68EBHL 6/20/2010 16:00:00 24.43 7.48 831 7.98EBHL 6/20/2010 17:00:00 24.41 7.5 835 7.9EBHL 6/20/2010 18:00:00 24.44 7.53 838 7.77EBHL 6/20/2010 19:00:00 24.24 7.53 843 7.65EBHL 6/20/2010 20:00:00 23.94 7.51 845 7.32EBHL 6/20/2010 21:00:00 23.57 7.48 852 6.93EBHL 6/20/2010 22:00:00 23.28 7.48 862 6.8EBHL 6/20/2010 23:00:00 22.99 7.49 867 6.76EBHL 6/21/2010 0:00:00 22.32 7.42 873 6.71EBHL 6/21/2010 1:00:00 22.17 7.44 866 6.48EBHL 6/21/2010 2:00:00 21.92 7.44 864 6.33EBHL 6/21/2010 3:00:00 21.8 7.44 863 6.21EBHL 6/21/2010 4:00:00 21.61 7.44 864 6.07EBHL 6/21/2010 5:00:00 21.57 7.45 864 5.89EBHL 6/21/2010 6:00:00 21.65 7.46 862 5.84EBHL 6/21/2010 7:00:00 21.76 7.48 862 5.92EBHL 6/21/2010 8:00:00 21.74 7.49 862 5.89EBHL 6/21/2010 9:00:00 21.69 7.48 870 5.88EBHL 6/21/2010 10:00:00 21.7 7.48 885 6.23EBHL 6/21/2010 11:00:00 21.76 7.47 896 6.98EBHL 6/21/2010 12:00:00 22.05 7.48 898 7.42EBHL 6/21/2010 13:00:00 22.24 7.47 897 8.03EBHL 6/21/2010 14:00:00 23.49 7.5 896 8.59EBHL 6/21/2010 15:00:00 23.97 7.56 900 9.02EBHL 6/21/2010 16:00:00 24.13 7.58 899 9.11EBHL 6/21/2010 17:00:00 24.08 7.6 899 8.87EBHL 6/21/2010 18:00:00 24.2 7.61 902 8.78EBHL 6/21/2010 19:00:00 24.02 7.6 902 8.36EBHL 6/21/2010 20:00:00 23.89 7.57 906 7.76EBHL 6/21/2010 21:00:00 23.77 7.54 908 7.19EBHL 6/21/2010 22:00:00 23.69 7.52 909 6.95EBHL 6/21/2010 23:00:00 23.28 7.52 909 6.82EBHL 6/22/2010 0:00:00 22.85 7.52 892 6.68EBHL 6/22/2010 1:00:00 22.57 7.43 775 6.51EBHL 6/22/2010 2:00:00 22.32 7.4 765 6.13EBHL 6/22/2010 3:00:00 22.21 7.41 746 5.53EBHL 6/22/2010 4:00:00 22.09 7.39 706 5.23EBHL 6/22/2010 5:00:00 21.95 7.37 671 5.06EBHL 6/22/2010 6:00:00 21.74 7.37 702 5.04EBHL 6/22/2010 7:00:00 21.77 7.38 742 5.28EBHL 6/22/2010 8:00:00 21.88 7.39 791 5.66

East Branch DuPage River Hidden Lake Page 25 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/22/2010 9:00:00 22.24 7.41 826 6.09EBHL 6/22/2010 10:00:00 22.78 7.43 845 6.83EBHL 6/22/2010 11:00:00 23.07 7.44 860 7.27EBHL 6/22/2010 12:00:00 23.19 7.47 872 7.48EBHL 6/22/2010 13:00:00 24.28 7.46 892 8.33EBHL 6/22/2010 14:00:00 24.53 7.52 912 8.56EBHL 6/22/2010 15:00:00 24.73 7.58 923 8.79EBHL 6/22/2010 16:00:00 25.49 7.63 925 9.16EBHL 6/22/2010 17:00:00 25.75 7.69 924 9.21EBHL 6/22/2010 18:00:00 25.7 7.66 926 9.13EBHL 6/22/2010 19:00:00 25.38 7.65 929 8.61EBHL 6/22/2010 20:00:00 24.95 7.62 934 7.75EBHL 6/22/2010 21:00:00 24.75 7.58 936 7.16EBHL 6/22/2010 22:00:00 24.56 7.57 936 6.89EBHL 6/22/2010 23:00:00 24.35 7.54 941 6.6EBHL 6/23/2010 0:00:00 24.03 7.51 942 6.29EBHL 6/23/2010 1:00:00 23.58 7.47 950 6EBHL 6/23/2010 2:00:00 23.18 7.45 963 5.77EBHL 6/23/2010 3:00:00 22.81 7.42 976 5.63EBHL 6/23/2010 4:00:00 22.63 7.41 977 5.48EBHL 6/23/2010 5:00:00 22.68 7.42 969 5.3EBHL 6/23/2010 6:00:00 22.78 7.44 963 5.16EBHL 6/23/2010 7:00:00 22.86 7.44 959 5.06EBHL 6/23/2010 8:00:00 22.89 7.45 958 5.04EBHL 6/23/2010 9:00:00 22.67 7.46 956 5.06EBHL 6/23/2010 10:00:00 22.5 7.48 943 5.43EBHL 6/23/2010 11:00:00 22.61 7.48 949 5.76EBHL 6/23/2010 12:00:00 22.21 7.4 874 6.3EBHL 6/23/2010 13:00:00 22.89 7.42 821 6.9EBHL 6/23/2010 14:00:00 23.66 7.48 856 7.35EBHL 6/23/2010 15:00:00 24.32 7.53 897 7.74EBHL 6/23/2010 16:00:00 24.35 7.48 911 7.94EBHL 6/23/2010 17:00:00 24.23 7.46 885 7.55EBHL 6/23/2010 18:00:00 23.46 7.61 786 7.28EBHL 6/23/2010 21:00:00 23.64 7.26 345 5.37EBHL 6/23/2010 22:00:00 23.54 7.22 378 4.98EBHL 6/23/2010 23:00:00 23.45 7.2 394 4.6EBHL 6/24/2010 0:00:00 23.31 7.18 394 4.6EBHL 6/24/2010 1:00:00 23.2 7.17 404 4.4EBHL 6/24/2010 2:00:00 23.09 7.19 414 4.3EBHL 6/24/2010 3:00:00 22.94 7.18 430 4.21EBHL 6/24/2010 4:00:00 22.77 7.19 450 4.11EBHL 6/24/2010 5:00:00 22.57 7.2 476 3.95EBHL 6/24/2010 6:00:00 22.34 7.2 491 3.88

East Branch DuPage River Hidden Lake Page 26 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/24/2010 7:00:00 22.16 7.21 509 3.69EBHL 6/24/2010 8:00:00 22.08 7.22 530 3.62EBHL 6/24/2010 11:00:00 22.44 7.14 687 4.03EBHL 6/24/2010 12:00:00 22.88 7.18 711 4.24EBHL 6/24/2010 13:00:00 23.37 7.2 733 4.52EBHL 6/24/2010 14:00:00 23.91 7.22 741 4.7EBHL 6/24/2010 15:00:00 24.25 7.22 760 5.07EBHL 6/24/2010 16:00:00 24.47 7.2 789 5.41EBHL 6/24/2010 17:00:00 24.56 7.18 801 5.54EBHL 6/24/2010 18:00:00 24.56 7.19 814 5.57EBHL 6/24/2010 19:00:00 24.5 7.19 830 5.71EBHL 6/24/2010 20:00:00 24.4 7.18 829 5.69EBHL 6/24/2010 21:00:00 24.15 7.19 841 5.74EBHL 6/24/2010 22:00:00 24 7.23 848 5.75EBHL 6/24/2010 23:00:00 23.7 7.23 859 5.71EBHL 6/25/2010 0:00:00 23.43 7.24 870 5.78EBHL 6/25/2010 1:00:00 23.2 7.24 881 5.78EBHL 6/25/2010 2:00:00 23.06 7.24 886 5.74EBHL 6/25/2010 3:00:00 22.99 7.27 889 5.65EBHL 6/25/2010 4:00:00 22.77 7.28 897 5.64EBHL 6/25/2010 5:00:00 22.37 7.25 911 5.81EBHL 6/25/2010 6:00:00 22.33 7.28 915 5.66EBHL 6/25/2010 7:00:00 22.28 7.3 926 5.77EBHL 6/25/2010 8:00:00 22.39 7.31 939 6.01EBHL 6/25/2010 9:00:00 22.54 7.32 963 6.36EBHL 6/25/2010 10:00:00 22.8 7.33 976 6.82EBHL 6/25/2010 11:00:00 23.17 7.35 985 7.19EBHL 6/25/2010 12:00:00 23.88 7.4 983 7.39EBHL 6/25/2010 13:00:00 24.14 7.42 992 7.64EBHL 6/25/2010 14:00:00 24.91 7.47 1002 8.38EBHL 6/25/2010 15:00:00 25.29 7.5 1026 8.35EBHL 6/25/2010 16:00:00 25.29 7.5 1045 8.37EBHL 6/25/2010 17:00:00 25.23 7.46 1060 8.22EBHL 6/25/2010 18:00:00 25.03 7.45 1068 8.09EBHL 6/25/2010 19:00:00 24.73 7.42 1077 7.6EBHL 6/25/2010 20:00:00 24.17 7.37 1080 7.19EBHL 6/25/2010 21:00:00 23.81 7.33 1084 6.84EBHL 6/25/2010 22:00:00 23.59 7.3 1079 6.62EBHL 6/25/2010 23:00:00 23.34 7.26 1075 6.44EBHL 6/26/2010 0:00:00 23.03 7.24 1077 6.26EBHL 6/26/2010 1:00:00 22.85 7.22 1077 6.11EBHL 6/26/2010 2:00:00 22.73 7.21 1078 5.91EBHL 6/26/2010 3:00:00 22.73 7.22 1080 5.72EBHL 6/26/2010 4:00:00 22.64 7.23 1090 5.62

East Branch DuPage River Hidden Lake Page 27 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/26/2010 5:00:00 22.35 7.31 1056 6.17EBHL 6/26/2010 6:00:00 22.02 7.21 577 6.48EBHL 6/26/2010 7:00:00 22.09 7.18 626 6.23EBHL 6/26/2010 8:00:00 22.48 7.18 767 5.96EBHL 6/26/2010 9:00:00 22.72 7.16 746 6.05EBHL 6/26/2010 10:00:00 22.99 7.16 725 6.07EBHL 6/26/2010 11:00:00 23.38 7.17 777 6.25EBHL 6/26/2010 12:00:00 23.78 7.17 790 6.24EBHL 6/26/2010 13:00:00 24.16 7.19 830 6.49EBHL 6/26/2010 14:00:00 24.92 7.23 881 6.84EBHL 6/26/2010 15:00:00 25.14 7.21 935 7.3EBHL 6/26/2010 16:00:00 25.26 7.22 949 7.47EBHL 6/26/2010 17:00:00 25.59 7.25 965 7.6EBHL 6/26/2010 18:00:00 25.55 7.23 973 7.3EBHL 6/26/2010 19:00:00 25.44 7.18 957 6.67EBHL 6/26/2010 20:00:00 25.21 7.13 939 5.88EBHL 6/26/2010 21:00:00 24.77 7.07 926 5.09EBHL 6/26/2010 22:00:00 24.55 7.06 920 4.66EBHL 6/26/2010 23:00:00 24.63 7.08 919 4.21EBHL 6/27/2010 0:00:00 24.42 7.08 922 4.01EBHL 6/27/2010 1:00:00 23.62 7.02 921 4.2EBHL 6/27/2010 2:00:00 23.48 7.02 915 4.04EBHL 6/27/2010 3:00:00 23.4 7.02 914 3.94EBHL 6/27/2010 4:00:00 23.21 7.04 921 4.04EBHL 6/27/2010 5:00:00 23.11 7.07 923 4.06EBHL 6/27/2010 6:00:00 23.01 7.07 927 4.1EBHL 6/27/2010 7:00:00 23.26 7.1 927 4.24EBHL 6/27/2010 8:00:00 23.3 7.13 936 4.66EBHL 6/27/2010 9:00:00 23.29 7.13 934 4.37EBHL 6/27/2010 10:00:00 23.29 7.16 920 4.74EBHL 6/27/2010 11:00:00 23.56 7.12 797 4.86EBHL 6/27/2010 12:00:00 23.82 7.11 669 4.99EBHL 6/27/2010 13:00:00 24.28 7.13 773 5.16EBHL 6/27/2010 14:00:00 24.7 7.17 754 5.35EBHL 6/27/2010 15:00:00 24.76 7.18 777 5.42EBHL 6/27/2010 16:00:00 24.99 7.19 793 5.43EBHL 6/27/2010 17:00:00 25.15 7.21 799 5.43EBHL 6/27/2010 18:00:00 25.23 7.22 827 5.32EBHL 6/27/2010 19:00:00 25.11 7.21 859 5.03EBHL 6/27/2010 20:00:00 24.81 7.18 876 4.76EBHL 6/27/2010 21:00:00 24.52 7.16 888 4.49EBHL 6/27/2010 22:00:00 24.34 7.13 884 4.02EBHL 6/27/2010 23:00:00 23.9 7.07 888 3.71EBHL 6/28/2010 0:00:00 23.73 7.01 875 3.41

East Branch DuPage River Hidden Lake Page 28 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/28/2010 1:00:00 23.68 6.98 868 3.39EBHL 6/28/2010 2:00:00 23.65 6.96 863 3.35EBHL 6/28/2010 3:00:00 23.55 6.96 859 3.47EBHL 6/28/2010 4:00:00 23.37 6.96 858 3.55EBHL 6/28/2010 5:00:00 23.19 6.95 859 3.68EBHL 6/28/2010 6:00:00 22.99 6.95 859 3.94EBHL 6/28/2010 7:00:00 22.92 6.96 861 4.2EBHL 6/28/2010 8:00:00 23.11 7.02 862 4.51EBHL 6/28/2010 9:00:00 23.21 7.05 868 4.91EBHL 6/28/2010 10:00:00 23.38 7.07 878 5.35EBHL 6/28/2010 11:00:00 23.54 7.08 899 5.93EBHL 6/28/2010 12:00:00 23.8 7.1 914 6.39EBHL 6/28/2010 13:00:00 24.23 7.11 923 6.67EBHL 6/28/2010 14:00:00 24.55 7.1 933 7.09EBHL 6/28/2010 15:00:00 24.76 7.12 940 7.16EBHL 6/28/2010 16:00:00 24.62 7.14 947 6.74EBHL 6/28/2010 17:00:00 24.87 7.19 950 6.7EBHL 6/28/2010 18:00:00 24.72 7.19 951 6.61EBHL 6/28/2010 19:00:00 24.57 7.18 945 6.31EBHL 6/28/2010 20:00:00 24.42 7.17 943 6.19EBHL 6/28/2010 21:00:00 24.07 7.14 944 5.86EBHL 6/28/2010 22:00:00 23.67 7.13 947 5.76EBHL 6/28/2010 23:00:00 23.37 7.12 949 5.65EBHL 6/29/2010 0:00:00 23 7.1 955 5.56EBHL 6/29/2010 1:00:00 22.69 7.09 959 5.59EBHL 6/29/2010 2:00:00 22.5 7.08 958 5.52EBHL 6/29/2010 3:00:00 22.35 7.09 956 5.43EBHL 6/29/2010 4:00:00 22.14 7.09 958 5.35EBHL 6/29/2010 5:00:00 21.87 7.09 962 5.33EBHL 6/29/2010 6:00:00 21.7 7.09 963 5.33EBHL 6/29/2010 7:00:00 21.7 7.11 966 5.58EBHL 6/29/2010 8:00:00 21.92 7.14 975 5.93EBHL 6/29/2010 9:00:00 22.2 7.16 982 6.4EBHL 6/29/2010 10:00:00 22.52 7.18 982 6.91EBHL 6/29/2010 11:00:00 23.15 7.23 980 7.2EBHL 6/29/2010 12:00:00 23.23 7.2 993 7.67EBHL 6/29/2010 13:00:00 23.27 7.22 988 7.85EBHL 6/29/2010 14:00:00 23.47 7.22 992 7.82EBHL 6/29/2010 15:00:00 24.05 7.24 996 8.21EBHL 6/29/2010 16:00:00 24.04 7.22 1009 8.16EBHL 6/29/2010 17:00:00 24.18 7.22 1017 8.36EBHL 6/29/2010 18:00:00 24.18 7.25 1023 8.09EBHL 6/29/2010 19:00:00 23.64 7.19 1038 7.58EBHL 6/29/2010 20:00:00 23.03 7.13 1044 6.96

East Branch DuPage River Hidden Lake Page 29 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 6/29/2010 21:00:00 22.63 7.08 1057 6.49EBHL 6/29/2010 22:00:00 22.31 7.05 1065 6.32EBHL 6/29/2010 23:00:00 21.87 7.02 1067 6.21EBHL 6/30/2010 0:00:00 21.42 6.99 1063 6.12EBHL 6/30/2010 1:00:00 21 6.97 1060 6.03EBHL 6/30/2010 2:00:00 20.6 6.95 1059 5.96EBHL 6/30/2010 3:00:00 20.24 6.94 1059 5.87EBHL 6/30/2010 4:00:00 19.93 6.94 1056 5.8EBHL 6/30/2010 5:00:00 19.72 6.94 1055 5.71EBHL 6/30/2010 6:00:00 19.57 6.94 1057 5.75EBHL 6/30/2010 7:00:00 19.6 6.96 1068 6.14EBHL 6/30/2010 8:00:00 19.96 7.02 1068 6.73EBHL 6/30/2010 9:00:00 20.46 7.08 1078 7.22EBHL 6/30/2010 10:00:00 21.05 7.14 1091 7.58EBHL 6/30/2010 11:00:00 21.75 7.11 1083 8.36EBHL 6/30/2010 12:00:00 22.28 7.13 1085 8.68EBHL 6/30/2010 13:00:00 23.27 7.21 1084 9.06EBHL 6/30/2010 14:00:00 23.69 7.24 1078 9.1EBHL 6/30/2010 15:00:00 24.43 7.29 1077 9.3EBHL 6/30/2010 16:00:00 24.6 7.3 1079 9.19EBHL 6/30/2010 17:00:00 24.42 7.3 1085 9.05EBHL 6/30/2010 18:00:00 24.26 7.29 1088 8.87EBHL 6/30/2010 19:00:00 23.69 7.24 1102 8.23EBHL 6/30/2010 20:00:00 23.05 7.18 1109 7.32EBHL 6/30/2010 21:00:00 22.7 7.13 1110 6.62EBHL 6/30/2010 22:00:00 22.53 7.12 1114 6.29EBHL 6/30/2010 23:00:00 22.2 7.11 1127 6.13EBHL 7/1/2010 0:00:00 21.7 7.08 1137 6.02EBHL 7/1/2010 1:00:00 21.12 7.04 1141 5.91EBHL 7/1/2010 2:00:00 20.67 7.01 1131 5.79EBHL 7/1/2010 3:00:00 20.23 6.98 1121 5.73EBHL 7/1/2010 4:00:00 19.81 6.96 1117 5.68EBHL 7/1/2010 5:00:00 19.35 6.95 1122 5.61EBHL 7/1/2010 6:00:00 19.09 6.96 1120 5.62EBHL 7/1/2010 7:00:00 19.11 6.99 1122 6.11EBHL 7/1/2010 8:00:00 19.56 7.04 1133 6.86EBHL 7/1/2010 9:00:00 20.03 7.11 1150 7.56EBHL 7/1/2010 10:00:00 20.68 7.18 1144 8.11EBHL 7/1/2010 11:00:00 21.45 7.2 1132 8.74EBHL 7/1/2010 12:00:00 22.25 7.22 1131 9.12EBHL 7/1/2010 13:00:00 23.13 7.27 1130 9.44EBHL 7/1/2010 14:00:00 23.79 7.24 1126 9.9EBHL 7/1/2010 15:00:00 24.35 7.29 1133 10.03EBHL 7/1/2010 16:00:00 24.72 7.34 1140 9.97

East Branch DuPage River Hidden Lake Page 30 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 7/1/2010 17:00:00 24.85 7.36 1143 9.83EBHL 7/1/2010 18:00:00 24.6 7.34 1148 9.38EBHL 7/1/2010 19:00:00 24.04 7.28 1151 8.54EBHL 7/1/2010 20:00:00 23.38 7.19 1168 7.38EBHL 7/1/2010 21:00:00 22.87 7.13 1179 6.56EBHL 7/1/2010 22:00:00 22.47 7.1 1196 6.34EBHL 7/1/2010 23:00:00 22.11 7.07 1207 6.3EBHL 7/2/2010 0:00:00 21.7 7.04 1198 6.21EBHL 7/2/2010 1:00:00 21.26 7 1191 6.08EBHL 7/2/2010 2:00:00 20.82 6.97 1185 5.91EBHL 7/2/2010 3:00:00 20.34 6.96 1188 5.76EBHL 7/2/2010 4:00:00 19.92 6.95 1190 5.67EBHL 7/2/2010 5:00:00 19.49 6.94 1196 5.59EBHL 7/2/2010 6:00:00 19.13 6.93 1203 5.64EBHL 7/2/2010 7:00:00 19.1 6.96 1205 6.13EBHL 7/2/2010 8:00:00 19.67 7.04 1202 7.01EBHL 7/2/2010 9:00:00 20.36 7.12 1202 7.92EBHL 7/2/2010 10:00:00 21.09 7.2 1199 8.63EBHL 7/2/2010 11:00:00 21.87 7.25 1196 9.21EBHL 7/2/2010 12:00:00 22.67 7.29 1193 9.61EBHL 7/2/2010 13:00:00 23.54 7.29 1184 10.14EBHL 7/2/2010 14:00:00 24.28 7.26 1166 10.67EBHL 7/2/2010 15:00:00 24.92 7.33 1174 10.82EBHL 7/2/2010 16:00:00 25.3 7.38 1176 10.88EBHL 7/2/2010 17:00:00 25.38 7.39 1178 10.75EBHL 7/2/2010 18:00:00 25.08 7.37 1176 10.26EBHL 7/2/2010 19:00:00 24.55 7.3 1194 9.29EBHL 7/2/2010 20:00:00 23.83 7.2 1216 7.74EBHL 7/2/2010 21:00:00 23.4 7.14 1237 6.56EBHL 7/2/2010 22:00:00 23.11 7.11 1243 6.24EBHL 7/2/2010 23:00:00 22.81 7.1 1239 6.23EBHL 7/3/2010 0:00:00 22.48 7.06 1236 6.2EBHL 7/3/2010 1:00:00 22.06 7.03 1231 6.08EBHL 7/3/2010 2:00:00 21.67 7 1228 5.92EBHL 7/3/2010 3:00:00 21.25 6.96 1230 5.73EBHL 7/3/2010 4:00:00 20.81 6.94 1222 5.61EBHL 7/3/2010 5:00:00 20.38 6.92 1225 5.54EBHL 7/3/2010 6:00:00 19.97 6.91 1227 5.54EBHL 7/3/2010 7:00:00 19.99 6.94 1230 6.07EBHL 7/3/2010 8:00:00 20.4 7.02 1235 7.31EBHL 7/3/2010 9:00:00 21.05 7.12 1234 8.55EBHL 7/3/2010 10:00:00 21.86 7.22 1237 9.51EBHL 7/3/2010 11:00:00 22.55 7.29 1250 10.16EBHL 7/3/2010 12:00:00 23.36 7.38 1264 10.72

East Branch DuPage River Hidden Lake Page 31 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 7/3/2010 13:00:00 24.14 7.35 1239 11.5EBHL 7/3/2010 14:00:00 24.93 7.39 1229 11.91EBHL 7/3/2010 15:00:00 25.54 7.42 1218 12.27EBHL 7/3/2010 16:00:00 25.91 7.45 1222 12.35EBHL 7/3/2010 17:00:00 25.96 7.44 1209 12.17EBHL 7/3/2010 18:00:00 25.61 7.42 1214 11.58EBHL 7/3/2010 19:00:00 25.01 7.35 1205 10.4EBHL 7/3/2010 20:00:00 24.31 7.24 1206 8.62EBHL 7/3/2010 21:00:00 23.92 7.16 1212 7.07EBHL 7/3/2010 22:00:00 23.72 7.14 1221 6.63EBHL 7/3/2010 23:00:00 23.52 7.14 1227 6.54EBHL 7/4/2010 0:00:00 23.22 7.12 1235 6.38EBHL 7/4/2010 1:00:00 22.83 7.08 1237 6.14EBHL 7/4/2010 2:00:00 22.53 7.06 1240 5.9EBHL 7/4/2010 3:00:00 22.25 7.05 1249 5.63EBHL 7/4/2010 4:00:00 21.8 7 1256 5.45EBHL 7/4/2010 5:00:00 21.43 6.98 1256 5.34EBHL 7/4/2010 6:00:00 21.16 6.98 1255 5.26EBHL 7/4/2010 7:00:00 21.23 7.01 1258 5.89EBHL 7/4/2010 8:00:00 21.66 7.11 1261 7.54EBHL 7/4/2010 9:00:00 22.43 7.24 1272 9.38EBHL 7/4/2010 10:00:00 23.38 7.37 1284 10.79EBHL 7/4/2010 11:00:00 24.31 7.5 1290 11.78EBHL 7/4/2010 12:00:00 25.24 7.61 1276 12.44EBHL 7/4/2010 13:00:00 26.02 7.66 1259 13.03EBHL 7/4/2010 14:00:00 26.59 7.66 1246 13.35EBHL 7/4/2010 15:00:00 26.47 7.57 1230 12.74EBHL 7/4/2010 16:00:00 26.75 7.56 1213 13.04EBHL 7/4/2010 17:00:00 26.55 7.49 1194 12.31EBHL 7/4/2010 18:00:00 25.86 7.36 1192 10.74EBHL 7/4/2010 19:00:00 25.51 7.27 1185 9.57EBHL 7/4/2010 20:00:00 25.18 7.2 1172 8.05EBHL 7/4/2010 21:00:00 24.81 7.16 1196 6.9EBHL 7/4/2010 22:00:00 24.71 7.13 1237 6.31EBHL 7/4/2010 23:00:00 24.58 7.13 1243 6.09EBHL 7/5/2010 0:00:00 24.37 7.12 1253 5.88EBHL 7/5/2010 1:00:00 24.23 7.11 1242 5.68EBHL 7/5/2010 2:00:00 24.07 7.11 1244 5.34EBHL 7/5/2010 3:00:00 23.64 7.07 1246 5.12EBHL 7/5/2010 4:00:00 23.43 7.06 1250 4.82EBHL 7/5/2010 5:00:00 23.28 7.05 1254 4.6EBHL 7/5/2010 6:00:00 23.16 7.05 1258 4.5EBHL 7/5/2010 7:00:00 23.11 7.07 1260 4.98EBHL 7/5/2010 8:00:00 23.13 7.13 1258 6.13

East Branch DuPage River Hidden Lake Page 32 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 7/5/2010 9:00:00 23.92 7.3 1264 8.7EBHL 7/5/2010 10:00:00 24.48 7.46 1255 10.6EBHL 7/5/2010 11:00:00 25.51 7.64 1255 12.27EBHL 7/5/2010 12:00:00 26.27 7.77 1242 13.21EBHL 7/5/2010 13:00:00 26.78 7.85 1242 13.81EBHL 7/5/2010 14:00:00 27.28 7.88 1226 14.47EBHL 7/5/2010 15:00:00 27.6 7.86 1209 14.59EBHL 7/5/2010 16:00:00 27.77 7.86 1197 14.56EBHL 7/5/2010 17:00:00 27.62 7.81 1194 14.01EBHL 7/5/2010 18:00:00 27.06 7.72 1181 13.02EBHL 7/5/2010 19:00:00 26.36 7.58 1175 11.53EBHL 7/5/2010 20:00:00 25.48 7.39 1167 9.32EBHL 7/5/2010 21:00:00 24.79 7.25 1149 7.12EBHL 7/5/2010 22:00:00 24.47 7.19 1185 6.08EBHL 7/5/2010 23:00:00 24.25 7.16 1193 5.77EBHL 7/6/2010 0:00:00 23.96 7.14 1198 5.59EBHL 7/6/2010 1:00:00 23.69 7.11 1208 5.43EBHL 7/6/2010 2:00:00 23.4 7.08 1215 5.1EBHL 7/6/2010 3:00:00 23.13 7.04 1221 4.86EBHL 7/6/2010 4:00:00 22.91 7.02 1229 4.64EBHL 7/6/2010 5:00:00 22.7 7.01 1231 4.42EBHL 7/6/2010 6:00:00 22.51 7 1232 4.36EBHL 7/6/2010 7:00:00 22.44 7.01 1242 4.68EBHL 7/6/2010 8:00:00 22.62 7.07 1252 5.71EBHL 7/6/2010 9:00:00 23.49 7.23 1263 7.99EBHL 7/6/2010 10:00:00 24.33 7.53 1334 9.8EBHL 7/6/2010 11:00:00 24.96 7.63 1318 11.18EBHL 7/6/2010 12:00:00 25.98 7.69 1300 12.48EBHL 7/6/2010 13:00:00 26.34 7.66 1283 13.03EBHL 7/6/2010 14:00:00 26.65 7.62 1273 13.26EBHL 7/6/2010 15:00:00 26.67 7.59 1275 13.07EBHL 7/6/2010 16:00:00 27.04 7.65 1299 13.03EBHL 7/6/2010 17:00:00 27.17 7.56 1268 13.22EBHL 7/6/2010 18:00:00 26.76 7.51 1270 12.05EBHL 7/6/2010 19:00:00 25.91 7.51 1204 8.88EBHL 7/6/2010 20:00:00 25.29 7.43 1191 7.32EBHL 7/6/2010 21:00:00 25.53 7.22 464 6.33EBHL 7/6/2010 22:00:00 25.42 7.21 651 6.56EBHL 7/6/2010 23:00:00 25.03 7.17 708 5.78EBHL 7/7/2010 0:00:00 24.91 7.15 781 5.21EBHL 7/7/2010 1:00:00 24.48 7.04 803 5.01EBHL 7/7/2010 2:00:00 24.31 6.98 819 4.82EBHL 7/7/2010 3:00:00 24.08 6.92 796 4.57EBHL 7/7/2010 4:00:00 23.92 6.87 804 4.32

East Branch DuPage River Hidden Lake Page 33 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 7/7/2010 5:00:00 23.79 6.87 837 4EBHL 7/7/2010 6:00:00 23.49 6.85 870 4.06EBHL 7/7/2010 7:00:00 23.51 6.88 887 4.38EBHL 7/7/2010 8:00:00 23.83 6.98 897 4.83EBHL 7/7/2010 9:00:00 24.46 7.1 908 5.78EBHL 7/7/2010 10:00:00 25.06 7.18 939 6.95EBHL 7/7/2010 11:00:00 25.8 7.27 964 8.12EBHL 7/7/2010 12:00:00 26.42 7.27 980 9.27EBHL 7/7/2010 13:00:00 27.23 7.33 1001 10.25EBHL 7/7/2010 14:00:00 28.02 7.43 1018 11.1EBHL 7/7/2010 15:00:00 28.61 7.49 1028 11.73EBHL 7/7/2010 16:00:00 28.77 7.51 1037 11.56EBHL 7/7/2010 17:00:00 28.4 7.52 1046 11.32EBHL 7/7/2010 18:00:00 27.84 7.45 1051 10.24EBHL 7/7/2010 19:00:00 27.22 7.37 1059 9EBHL 7/7/2010 20:00:00 27.06 7.3 1069 7.92EBHL 7/7/2010 21:00:00 26.79 7.26 1086 7.14EBHL 7/7/2010 22:00:00 26.77 7.3 1109 7.04EBHL 7/7/2010 23:00:00 26.47 7.3 1116 6.78EBHL 7/8/2010 0:00:00 25.73 7.2 1106 6.34EBHL 7/8/2010 1:00:00 25.6 7.23 1113 6.16EBHL 7/8/2010 2:00:00 25.18 7.25 1078 6.09EBHL 7/8/2010 3:00:00 24.57 7.07 1036 5.75EBHL 7/8/2010 4:00:00 24.55 7.03 791 5.41EBHL 7/8/2010 5:00:00 24.41 7.01 898 4.84EBHL 7/8/2010 6:00:00 24.39 7.02 974 4.52EBHL 7/8/2010 7:00:00 24.28 6.96 990 4.56EBHL 7/8/2010 8:00:00 23.97 6.86 928 4.87EBHL 7/8/2010 9:00:00 23.93 6.83 890 4.98EBHL 7/8/2010 10:00:00 24.3 6.88 910 6.01EBHL 7/8/2010 11:00:00 24.64 6.9 910 6.34EBHL 7/8/2010 12:00:00 25.32 6.96 882 7.43EBHL 7/8/2010 13:00:00 26.3 7.09 867 8.64EBHL 7/8/2010 14:00:00 26.79 7.16 887 9.42EBHL 7/8/2010 15:00:00 27.28 7.24 916 10.33EBHL 7/8/2010 16:00:00 27.48 7.32 943 11.05EBHL 7/8/2010 17:00:00 27.77 7.42 965 11.67EBHL 7/8/2010 18:00:00 27.7 7.54 988 12.23EBHL 7/8/2010 19:00:00 27.22 7.45 1004 11.18EBHL 7/8/2010 20:00:00 26.56 7.25 1004 9.02EBHL 7/8/2010 21:00:00 26.37 7.2 1011 8.07EBHL 7/8/2010 22:00:00 26.25 7.19 1024 7.63EBHL 7/8/2010 23:00:00 26.13 7.18 1044 7.33EBHL 7/9/2010 0:00:00 25.83 7.14 1063 6.78

East Branch DuPage River Hidden Lake Page 34 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 7/9/2010 1:00:00 25.54 7.09 1074 6.18EBHL 7/9/2010 2:00:00 25.34 7.07 1089 5.71EBHL 7/9/2010 3:00:00 25.14 7.06 1091 5.17EBHL 7/9/2010 4:00:00 24.58 6.99 1073 4.86EBHL 7/9/2010 5:00:00 24.39 7 1088 4.43EBHL 7/9/2010 6:00:00 24.23 7.01 1102 4.12EBHL 7/9/2010 7:00:00 24.16 7.03 1111 4.21EBHL 7/9/2010 8:00:00 24.16 7.08 1111 5.45EBHL 7/9/2010 9:00:00 24.69 7.2 1115 7.34EBHL 7/9/2010 10:00:00 25.26 7.3 1119 8.73EBHL 7/9/2010 11:00:00 25.8 7.38 1119 9.81EBHL 7/9/2010 12:00:00 26.41 7.45 1112 10.91EBHL 7/9/2010 13:00:00 26.9 7.49 1099 12.19EBHL 7/9/2010 14:00:00 27.59 7.64 1100 13.52EBHL 7/9/2010 15:00:00 27.74 7.73 1100 14.33EBHL 7/9/2010 16:00:00 27.77 7.75 1114 14.2EBHL 7/9/2010 17:00:00 27.61 7.8 1130 14.18EBHL 7/9/2010 18:00:00 27.4 7.81 1139 13.97EBHL 7/9/2010 19:00:00 26.95 7.77 1143 12.99EBHL 7/9/2010 20:00:00 26.17 7.52 1141 10.72EBHL 7/9/2010 21:00:00 25.69 7.39 1146 8.88EBHL 7/9/2010 22:00:00 25.36 7.33 1146 8.09EBHL 7/9/2010 23:00:00 25.04 7.3 1142 7.87EBHL 7/10/2010 0:00:00 24.65 7.24 1145 7.55EBHL 7/10/2010 1:00:00 24.29 7.19 1147 7.18EBHL 7/10/2010 2:00:00 23.96 7.14 1147 6.64EBHL 7/10/2010 3:00:00 23.61 7.08 1147 5.89EBHL 7/10/2010 4:00:00 23.29 7.02 1143 5.13EBHL 7/10/2010 5:00:00 22.96 6.98 1145 4.53EBHL 7/10/2010 6:00:00 22.72 6.97 1145 4.29EBHL 7/10/2010 7:00:00 22.7 7 1148 4.89EBHL 7/10/2010 8:00:00 23.12 7.1 1152 6.45EBHL 7/10/2010 9:00:00 23.77 7.23 1156 8.08EBHL 7/10/2010 10:00:00 24.59 7.36 1156 9.47EBHL 7/10/2010 11:00:00 25.44 7.5 1154 10.61EBHL 7/10/2010 12:00:00 25.88 7.56 1152 11.22EBHL 7/10/2010 13:00:00 26.38 7.67 1148 12.68EBHL 7/10/2010 14:00:00 27.48 7.82 1143 14.14EBHL 7/10/2010 15:00:00 27.84 7.76 1128 14.69EBHL 7/10/2010 16:00:00 28.34 7.92 1126 15.56EBHL 7/10/2010 17:00:00 28.15 7.93 1130 15.46EBHL 7/10/2010 18:00:00 27.75 7.87 1137 14.53EBHL 7/10/2010 19:00:00 26.98 7.74 1147 12.74EBHL 7/10/2010 20:00:00 26.41 7.55 1151 10.8

East Branch DuPage River Hidden Lake Page 35 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 7/10/2010 21:00:00 25.98 7.4 1152 8.92EBHL 7/10/2010 22:00:00 25.63 7.32 1157 7.73EBHL 7/10/2010 23:00:00 25.29 7.28 1159 7.25EBHL 7/11/2010 0:00:00 24.94 7.24 1166 6.86EBHL 7/11/2010 1:00:00 24.58 7.19 1169 6.45EBHL 7/11/2010 2:00:00 24.15 7.13 1172 5.96EBHL 7/11/2010 3:00:00 23.7 7.05 1179 5.36EBHL 7/11/2010 4:00:00 23.31 6.99 1184 4.8EBHL 7/11/2010 5:00:00 22.96 6.94 1186 4.36EBHL 7/11/2010 6:00:00 22.63 6.91 1187 4.05EBHL 7/11/2010 7:00:00 22.52 6.93 1190 4.64EBHL 7/11/2010 8:00:00 22.95 7.03 1193 6.32EBHL 7/11/2010 9:00:00 23.67 7.18 1198 8.2EBHL 7/11/2010 10:00:00 24.44 7.33 1204 10EBHL 7/11/2010 11:00:00 25.11 7.5 1204 11.48EBHL 7/11/2010 12:00:00 25.78 7.64 1207 12.51EBHL 7/11/2010 13:00:00 26.2 7.72 1205 13.47EBHL 7/11/2010 14:00:00 25.81 7.61 1208 13.28EBHL 7/11/2010 15:00:00 25.74 7.58 1203 13.62EBHL 7/11/2010 16:00:00 25.85 7.47 1180 13.46EBHL 7/11/2010 17:00:00 25.79 7.44 1174 13.05EBHL 7/11/2010 18:00:00 25.14 7.26 1172 10.6EBHL 7/11/2010 19:00:00 24.54 7.14 1172 8.74EBHL 7/11/2010 20:00:00 24.21 7.09 1170 7.92EBHL 7/11/2010 21:00:00 23.88 7.07 1171 7.32EBHL 7/11/2010 22:00:00 23.61 7.06 1170 6.91EBHL 7/11/2010 23:00:00 23.74 7.06 1151 7.51EBHL 7/12/2010 0:00:00 23.37 7.04 1162 6.87EBHL 7/12/2010 1:00:00 22.79 6.9 1045 6.05EBHL 7/12/2010 2:00:00 22.73 6.93 1115 5.59EBHL 7/12/2010 3:00:00 22.69 6.91 1150 5.05EBHL 7/12/2010 4:00:00 22.48 6.87 1179 4.85EBHL 7/12/2010 5:00:00 22.1 6.79 1190 4.61EBHL 7/12/2010 6:00:00 21.84 6.76 1176 4.25EBHL 7/12/2010 7:00:00 21.75 6.77 1142 4.46EBHL 7/12/2010 8:00:00 22.01 6.85 1097 5.46EBHL 7/12/2010 9:00:00 22.66 6.97 1075 6.67EBHL 7/12/2010 10:00:00 23.3 7.07 1081 7.68EBHL 7/12/2010 11:00:00 24.13 7.16 1075 8.83EBHL 7/12/2010 12:00:00 24.89 7.25 1087 10.08EBHL 7/12/2010 13:00:00 25.66 7.36 1108 10.98EBHL 7/12/2010 14:00:00 26.18 7.43 1114 11.42EBHL 7/12/2010 15:00:00 26.46 7.48 1102 11.72EBHL 7/12/2010 16:00:00 27.22 7.57 1095 12.08

East Branch DuPage River Hidden Lake Page 36 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 7/12/2010 17:00:00 27.13 7.53 1091 11.66EBHL 7/12/2010 18:00:00 26.87 7.43 1079 10.67EBHL 7/12/2010 19:00:00 26.5 7.34 1069 9.29EBHL 7/12/2010 20:00:00 26.24 7.23 1059 7.87EBHL 7/12/2010 21:00:00 26.05 7.15 1042 6.8EBHL 7/12/2010 22:00:00 25.75 7.07 1014 6.03EBHL 7/12/2010 23:00:00 25.32 6.98 987 5.42EBHL 7/13/2010 0:00:00 24.97 6.91 967 4.95EBHL 7/13/2010 1:00:00 24.7 6.86 957 4.58EBHL 7/13/2010 2:00:00 24.46 6.83 950 4.35EBHL 7/13/2010 3:00:00 24.32 6.8 942 4.21EBHL 7/13/2010 4:00:00 24.22 6.8 940 4.14EBHL 7/13/2010 5:00:00 24.13 6.8 937 4.01EBHL 7/13/2010 6:00:00 24.05 6.81 932 3.97EBHL 7/13/2010 7:00:00 23.99 6.83 927 4.08EBHL 7/13/2010 8:00:00 24.2 6.89 927 5.09EBHL 8/2/2010 12:00:00 24.85 7.46 1059 7.63EBHL 8/2/2010 13:00:00 25.25 7.47 1046 8.03EBHL 8/2/2010 14:00:00 25.18 7.4 1045 8.43EBHL 8/2/2010 15:00:00 25.7 7.45 1045 8.75EBHL 8/2/2010 16:00:00 25.79 7.49 1053 8.76EBHL 8/2/2010 17:00:00 25.44 7.48 1069 8.2EBHL 8/2/2010 18:00:00 25.29 7.46 1072 7.78EBHL 8/2/2010 19:00:00 25.18 7.43 1084 7.42EBHL 8/2/2010 20:00:00 24.99 7.41 1100 7EBHL 8/2/2010 21:00:00 24.69 7.4 1115 6.66EBHL 8/2/2010 22:00:00 24.46 7.37 1118 6.41EBHL 8/2/2010 23:00:00 24.14 7.35 1120 6.21EBHL 8/3/2010 0:00:00 23.93 7.33 1109 6.04EBHL 8/3/2010 1:00:00 23.63 7.31 1089 6.04EBHL 8/3/2010 2:00:00 23.51 7.28 1089 5.79EBHL 8/3/2010 3:00:00 23.27 7.27 1090 5.72EBHL 8/3/2010 4:00:00 22.84 7.34 1082 6.22EBHL 8/3/2010 5:00:00 22.42 7.29 944 5.98EBHL 8/3/2010 6:00:00 21.33 7.29 434 6.98EBHL 8/3/2010 7:00:00 21.68 7.25 402 7.14EBHL 8/3/2010 8:00:00 21.93 7.21 338 7.06EBHL 8/3/2010 9:00:00 22.04 7.15 395 6.57EBHL 8/3/2010 10:00:00 22.09 7.11 431 6.09EBHL 8/3/2010 11:00:00 22.05 7.08 431 5.74EBHL 8/3/2010 12:00:00 22.27 7.02 436 5.73EBHL 8/3/2010 13:00:00 22.46 7.02 452 5.68EBHL 8/3/2010 14:00:00 22.84 7.06 449 5.47EBHL 8/3/2010 15:00:00 23.4 7.08 488 5.56

East Branch DuPage River Hidden Lake Page 37 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/3/2010 16:00:00 23.59 7.08 484 5.38EBHL 8/3/2010 17:00:00 23.97 7.1 502 5.46EBHL 8/3/2010 18:00:00 24.01 7.07 498 5.27EBHL 8/3/2010 19:00:00 24.08 7.07 506 5.13EBHL 8/3/2010 20:00:00 23.99 7.05 510 4.8EBHL 8/3/2010 21:00:00 23.91 7.05 513 4.55EBHL 8/3/2010 22:00:00 23.82 7.04 520 4.29EBHL 8/3/2010 23:00:00 23.74 7.03 527 4.03EBHL 8/4/2010 0:00:00 23.63 7.01 538 3.95EBHL 8/4/2010 1:00:00 23.57 7.01 549 3.84EBHL 8/4/2010 2:00:00 23.52 6.99 558 3.75EBHL 8/4/2010 3:00:00 23.51 7.02 562 3.59EBHL 8/4/2010 4:00:00 23.48 7.02 569 3.47EBHL 8/4/2010 5:00:00 23.48 7.03 572 3.31EBHL 8/4/2010 6:00:00 23.41 7.04 586 3.4EBHL 8/4/2010 7:00:00 23.34 7.06 590 3.75EBHL 8/4/2010 8:00:00 23.28 7.06 594 3.67EBHL 8/4/2010 9:00:00 23.17 7.07 561 4.1EBHL 8/4/2010 10:00:00 23.15 7.07 560 4.27EBHL 8/4/2010 11:00:00 23.31 7.08 577 4.3EBHL 8/4/2010 12:00:00 23.45 7.1 573 4.39EBHL 8/4/2010 13:00:00 23.62 7.09 590 4.74EBHL 8/4/2010 14:00:00 23.57 7.1 557 4.55EBHL 8/4/2010 15:00:00 23.66 7.09 594 4.62EBHL 8/4/2010 16:00:00 23.65 7.09 597 4.55EBHL 8/4/2010 17:00:00 23.65 7.08 604 4.47EBHL 8/4/2010 18:00:00 23.7 7.09 614 4.52EBHL 8/4/2010 19:00:00 23.68 7.08 615 4.41EBHL 8/4/2010 20:00:00 23.65 7.08 616 4.25EBHL 8/4/2010 21:00:00 23.62 7.07 622 4.1EBHL 8/4/2010 22:00:00 23.53 7.07 621 3.88EBHL 8/4/2010 23:00:00 23.4 7.05 634 3.89EBHL 8/5/2010 0:00:00 23.28 7.05 645 3.99EBHL 8/5/2010 1:00:00 23.17 7.05 650 3.89EBHL 8/5/2010 2:00:00 23.08 7.05 657 3.89EBHL 8/5/2010 3:00:00 23.01 7.05 661 3.81EBHL 8/5/2010 4:00:00 22.96 7.07 664 3.68EBHL 8/5/2010 5:00:00 22.91 7.07 663 3.61EBHL 8/5/2010 6:00:00 22.81 7.09 670 3.63EBHL 8/5/2010 7:00:00 22.75 7.09 674 3.62EBHL 8/5/2010 8:00:00 22.78 7.09 673 3.5EBHL 8/5/2010 9:00:00 22.79 7.1 693 3.9EBHL 8/5/2010 10:00:00 23.02 7.11 698 3.91EBHL 8/5/2010 11:00:00 23.24 7.13 718 4.24

East Branch DuPage River Hidden Lake Page 38 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/5/2010 12:00:00 23.58 7.15 732 4.53EBHL 8/5/2010 13:00:00 24 7.17 743 4.69EBHL 8/5/2010 14:00:00 24.32 7.2 758 4.86EBHL 8/5/2010 15:00:00 24.57 7.21 771 4.92EBHL 8/5/2010 16:00:00 24.75 7.22 778 5EBHL 8/5/2010 17:00:00 24.77 7.23 785 5.02EBHL 8/5/2010 18:00:00 24.7 7.22 791 4.98EBHL 8/5/2010 19:00:00 24.48 7.22 803 5.07EBHL 8/5/2010 20:00:00 24.25 7.2 811 4.95EBHL 8/5/2010 21:00:00 24.11 7.21 814 4.89EBHL 8/5/2010 22:00:00 23.89 7.2 822 4.76EBHL 8/5/2010 23:00:00 23.7 7.19 827 4.77EBHL 8/6/2010 0:00:00 23.55 7.19 829 4.82EBHL 8/6/2010 1:00:00 23.4 7.19 835 4.94EBHL 8/6/2010 2:00:00 23.16 7.18 841 4.9EBHL 8/6/2010 3:00:00 23.01 7.18 842 4.88EBHL 8/6/2010 4:00:00 22.87 7.18 842 4.88EBHL 8/6/2010 5:00:00 22.67 7.17 846 4.92EBHL 8/6/2010 6:00:00 22.48 7.15 852 4.92EBHL 8/6/2010 7:00:00 22.34 7.16 855 4.95EBHL 8/6/2010 8:00:00 22.31 7.17 861 5.04EBHL 8/6/2010 9:00:00 22.42 7.17 866 5.18EBHL 8/6/2010 10:00:00 22.63 7.17 878 5.35EBHL 8/6/2010 11:00:00 22.89 7.18 895 5.62EBHL 8/6/2010 12:00:00 23.35 7.2 903 5.84EBHL 8/6/2010 13:00:00 23.74 7.22 911 6.07EBHL 8/6/2010 14:00:00 24.2 7.24 926 6.33EBHL 8/6/2010 15:00:00 24.47 7.24 944 6.67EBHL 8/6/2010 16:00:00 24.44 7.21 969 7.01EBHL 8/6/2010 17:00:00 24.25 7.19 973 6.95EBHL 8/6/2010 18:00:00 24.26 7.19 966 7.03EBHL 8/6/2010 19:00:00 24.1 7.17 963 6.96EBHL 8/6/2010 20:00:00 23.85 7.14 963 6.76EBHL 8/6/2010 21:00:00 23.6 7.13 968 6.68EBHL 8/6/2010 22:00:00 23.32 7.11 971 6.6EBHL 8/6/2010 23:00:00 23.09 7.11 959 6.5EBHL 8/7/2010 0:00:00 22.86 7.1 959 6.42EBHL 8/7/2010 1:00:00 22.69 7.09 953 6.35EBHL 8/7/2010 2:00:00 22.53 7.1 948 6.27EBHL 8/7/2010 3:00:00 22.35 7.1 963 6.14EBHL 8/7/2010 4:00:00 22.18 7.11 967 6.02EBHL 8/7/2010 5:00:00 22.04 7.14 964 5.95EBHL 8/7/2010 6:00:00 21.88 7.14 964 5.84EBHL 8/7/2010 7:00:00 21.81 7.15 966 5.89

East Branch DuPage River Hidden Lake Page 39 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/7/2010 8:00:00 22.02 7.16 972 6.08EBHL 8/7/2010 9:00:00 22.15 7.17 987 6.24EBHL 8/7/2010 10:00:00 22.28 7.19 999 6.52EBHL 8/7/2010 11:00:00 22.89 7.22 994 6.85EBHL 8/7/2010 12:00:00 23.16 7.24 995 7.12EBHL 8/7/2010 13:00:00 23.85 7.28 1000 7.5EBHL 8/7/2010 14:00:00 24.28 7.31 1006 7.81EBHL 8/7/2010 15:00:00 24.36 7.32 1022 8EBHL 8/7/2010 16:00:00 24.89 7.35 1049 8.07EBHL 8/7/2010 17:00:00 24.67 7.35 1059 8.14EBHL 8/7/2010 18:00:00 24.59 7.34 1061 8.12EBHL 8/7/2010 19:00:00 24.24 7.3 1070 7.67EBHL 8/7/2010 20:00:00 24.1 7.28 1068 7.39EBHL 8/7/2010 21:00:00 23.83 7.23 1044 7.07EBHL 8/7/2010 22:00:00 23.52 7.19 1076 6.9EBHL 8/7/2010 23:00:00 23.22 7.15 1077 6.75EBHL 8/8/2010 0:00:00 22.99 7.13 1072 6.5EBHL 8/8/2010 1:00:00 22.79 7.11 1079 6.38EBHL 8/8/2010 2:00:00 22.59 7.1 1094 6.18EBHL 8/8/2010 3:00:00 22.35 7.09 1102 6.08EBHL 8/8/2010 4:00:00 22.17 7.08 1106 6.02EBHL 8/8/2010 5:00:00 22.06 7.08 1106 5.96EBHL 8/8/2010 6:00:00 21.87 7.08 1107 5.92EBHL 8/8/2010 7:00:00 21.81 7.08 1107 5.96EBHL 8/8/2010 8:00:00 21.76 7.09 1104 6.06EBHL 8/8/2010 9:00:00 21.75 7.1 1097 6.08EBHL 8/8/2010 10:00:00 21.71 7.1 1103 6.14EBHL 8/8/2010 11:00:00 21.73 7.1 1111 6.32EBHL 8/8/2010 12:00:00 21.66 7.1 1111 6.2EBHL 8/8/2010 13:00:00 21.58 7.06 1119 6.43EBHL 8/8/2010 14:00:00 22.72 7.15 1066 7.15EBHL 8/8/2010 15:00:00 23.5 7.2 1124 7.71EBHL 8/8/2010 16:00:00 23.95 7.21 1150 8.01EBHL 8/8/2010 17:00:00 24.14 7.25 1149 7.87EBHL 8/8/2010 18:00:00 23.94 7.23 1146 7.75EBHL 8/8/2010 19:00:00 23.54 7.19 1153 7.27EBHL 8/8/2010 20:00:00 23.58 7.19 1151 6.97EBHL 8/8/2010 21:00:00 23.65 7.18 1140 6.71EBHL 8/8/2010 22:00:00 23.65 7.17 1147 6.48EBHL 8/8/2010 23:00:00 23.49 7.14 1156 6.34EBHL 8/9/2010 0:00:00 23.29 7.11 1146 6.18EBHL 8/9/2010 1:00:00 23.08 7.09 1149 6.05EBHL 8/9/2010 2:00:00 22.84 7.07 1159 6.02EBHL 8/9/2010 3:00:00 22.64 7.07 1165 5.95

East Branch DuPage River Hidden Lake Page 40 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/9/2010 4:00:00 22.55 7.07 1169 5.87EBHL 8/9/2010 5:00:00 22.47 7.07 1164 5.79EBHL 8/9/2010 6:00:00 22.38 7.07 1165 5.72EBHL 8/9/2010 7:00:00 22.32 7.07 1165 5.77EBHL 8/9/2010 8:00:00 22.39 7.09 1163 5.92EBHL 8/9/2010 9:00:00 22.53 7.1 1160 6.17EBHL 8/9/2010 10:00:00 22.48 7.09 1154 6.11EBHL 8/9/2010 11:00:00 23.32 7.14 1160 6.82EBHL 8/9/2010 12:00:00 23.36 7.13 1175 7.2EBHL 8/9/2010 13:00:00 24.25 7.17 1183 7.77EBHL 8/9/2010 14:00:00 24.95 7.19 1191 8.1EBHL 8/9/2010 15:00:00 25.65 7.22 1189 8.31EBHL 8/9/2010 16:00:00 25.46 7.2 1176 8.29EBHL 8/9/2010 17:00:00 25.99 7.24 1171 8.25EBHL 8/9/2010 18:00:00 25.77 7.22 1166 8.07EBHL 8/9/2010 19:00:00 25.65 7.22 1163 7.74EBHL 8/9/2010 20:00:00 25.44 7.18 1172 7.1EBHL 8/9/2010 21:00:00 25.3 7.17 1182 6.8EBHL 8/9/2010 22:00:00 25 7.17 1188 6.68EBHL 8/9/2010 23:00:00 24.72 7.13 1189 6.48EBHL 8/10/2010 0:00:00 24.49 7.09 1187 6.26EBHL 8/10/2010 1:00:00 24.24 7.06 1176 5.96EBHL 8/10/2010 2:00:00 24.03 7.03 1163 5.89EBHL 8/10/2010 3:00:00 23.92 7.02 1155 5.78EBHL 8/10/2010 4:00:00 23.84 7.01 1152 5.69EBHL 8/10/2010 5:00:00 23.77 7.01 1150 5.59EBHL 8/10/2010 6:00:00 23.58 7.01 1165 5.45EBHL 8/10/2010 7:00:00 23.5 7.01 1179 5.53EBHL 8/10/2010 8:00:00 23.54 7.02 1190 5.69EBHL 8/10/2010 9:00:00 23.56 7.03 1193 5.84EBHL 8/10/2010 10:00:00 23.69 7.04 1188 6.14EBHL 8/10/2010 11:00:00 23.9 7.04 1180 6.5EBHL 8/10/2010 12:00:00 24.47 7.08 1153 7.14EBHL 8/10/2010 13:00:00 24.77 7.08 1138 7.68EBHL 8/10/2010 14:00:00 25.07 7.1 1130 8.01EBHL 8/10/2010 15:00:00 26.08 7.16 1136 8.53EBHL 8/10/2010 16:00:00 26.17 7.19 1144 8.55EBHL 8/10/2010 17:00:00 26.38 7.2 1141 8.48EBHL 8/10/2010 18:00:00 26.05 7.18 1146 8.35EBHL 8/10/2010 19:00:00 25.74 7.16 1163 7.6EBHL 8/10/2010 20:00:00 25.62 7.14 1172 7.29EBHL 8/10/2010 21:00:00 25.45 7.12 1176 7EBHL 8/10/2010 22:00:00 25.29 7.1 1169 6.83EBHL 8/10/2010 23:00:00 25 7.08 1160 6.61

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/11/2010 0:00:00 24.72 7.05 1153 6.39EBHL 8/11/2010 1:00:00 24.39 7.02 1152 6.23EBHL 8/11/2010 2:00:00 24.07 7 1147 6.12EBHL 8/11/2010 3:00:00 23.84 6.99 1139 6EBHL 8/11/2010 4:00:00 23.67 6.99 1135 5.87EBHL 8/11/2010 5:00:00 23.59 6.99 1135 5.71EBHL 8/11/2010 6:00:00 23.55 7.01 1141 5.58EBHL 8/11/2010 7:00:00 23.46 7.02 1158 5.59EBHL 8/11/2010 8:00:00 23.64 7.05 1175 5.98EBHL 8/11/2010 9:00:00 23.98 7.08 1195 6.41EBHL 8/11/2010 10:00:00 24.41 7.1 1194 6.87EBHL 8/11/2010 11:00:00 24.94 7.14 1176 7.34EBHL 8/11/2010 12:00:00 25.23 7.11 1150 7.93EBHL 8/11/2010 13:00:00 26.37 7.18 1137 8.47EBHL 8/11/2010 14:00:00 27.01 7.22 1130 8.9EBHL 8/11/2010 15:00:00 27.57 7.26 1128 9.36EBHL 8/11/2010 16:00:00 27.92 7.31 1124 9.82EBHL 8/11/2010 17:00:00 27.94 7.33 1135 9.93EBHL 8/11/2010 18:00:00 27.65 7.31 1150 9.61EBHL 8/11/2010 19:00:00 27.09 7.26 1164 9.02EBHL 8/11/2010 20:00:00 26.74 7.23 1176 8EBHL 8/11/2010 21:00:00 26.51 7.2 1166 7.68EBHL 8/11/2010 22:00:00 26.3 7.17 1152 7.51EBHL 8/11/2010 23:00:00 26.04 7.16 1148 7.22EBHL 8/12/2010 0:00:00 25.7 7.14 1143 6.81EBHL 8/12/2010 1:00:00 25.29 7.09 1139 6.43EBHL 8/12/2010 2:00:00 24.96 7.06 1141 6.12EBHL 8/12/2010 3:00:00 24.76 7.06 1141 5.88EBHL 8/12/2010 4:00:00 24.18 6.99 1129 5.91EBHL 8/12/2010 5:00:00 24.06 7 1153 5.69EBHL 8/12/2010 6:00:00 23.87 7.02 1183 5.58EBHL 8/12/2010 7:00:00 23.78 7.04 1195 5.66EBHL 8/12/2010 8:00:00 24.15 7.07 1183 6.16EBHL 8/12/2010 9:00:00 24.71 7.11 1172 6.72EBHL 8/12/2010 10:00:00 25.26 7.15 1163 7.31EBHL 8/12/2010 11:00:00 25.79 7.17 1156 7.94EBHL 8/12/2010 12:00:00 26.53 7.19 1148 8.65EBHL 8/12/2010 13:00:00 27.47 7.25 1139 9.44EBHL 8/12/2010 14:00:00 27.74 7.26 1141 9.61EBHL 8/12/2010 15:00:00 28.03 7.29 1152 10.01EBHL 8/12/2010 16:00:00 28.68 7.34 1164 10.64EBHL 8/12/2010 17:00:00 28.5 7.36 1157 10.69EBHL 8/12/2010 18:00:00 28.25 7.36 1146 10.52EBHL 8/12/2010 19:00:00 27.74 7.33 1135 9.65

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/12/2010 20:00:00 27.31 7.28 1130 8.72EBHL 8/12/2010 21:00:00 26.95 7.25 1135 8.25EBHL 8/12/2010 22:00:00 26.74 7.23 1139 7.96EBHL 8/12/2010 23:00:00 26.4 7.2 1140 7.64EBHL 8/13/2010 0:00:00 25.96 7.15 1140 7.17EBHL 8/13/2010 1:00:00 25.54 7.11 1143 6.74EBHL 8/13/2010 2:00:00 25.21 7.1 1156 6.37EBHL 8/13/2010 3:00:00 24.64 7.03 1153 6.14EBHL 8/13/2010 4:00:00 24.26 7.02 1161 5.88EBHL 8/13/2010 5:00:00 23.97 7.02 1178 5.64EBHL 8/13/2010 6:00:00 23.7 7.02 1196 5.48EBHL 8/13/2010 7:00:00 23.54 7.02 1199 5.54EBHL 8/13/2010 8:00:00 23.9 7.07 1190 6.26EBHL 8/13/2010 9:00:00 24.51 7.13 1181 7.19EBHL 8/13/2010 10:00:00 25.07 7.18 1174 7.96EBHL 8/13/2010 11:00:00 25.28 7.19 1163 8.31EBHL 8/13/2010 12:00:00 26.36 7.24 1156 9.4EBHL 8/13/2010 13:00:00 27.09 7.28 1153 10.18EBHL 8/13/2010 14:00:00 27.16 7.3 1162 10.47EBHL 8/13/2010 15:00:00 27.62 7.33 1155 11.08EBHL 8/13/2010 16:00:00 28.29 7.43 1158 11.68EBHL 8/13/2010 17:00:00 27.81 7.45 1160 11.06EBHL 8/13/2010 18:00:00 27.61 7.42 1158 9.91EBHL 8/13/2010 19:00:00 27.44 7.4 1157 9.04EBHL 8/13/2010 20:00:00 27.2 7.38 1161 8.19EBHL 8/13/2010 21:00:00 26.4 7.45 1073 7.5EBHL 8/13/2010 22:00:00 25.83 7.21 584 6.39EBHL 8/13/2010 23:00:00 25.66 7.1 628 6.02EBHL 8/14/2010 0:00:00 25.57 7.1 798 5.5EBHL 8/14/2010 1:00:00 25.13 7.01 828 5.42EBHL 8/14/2010 2:00:00 24.95 6.94 798 4.89EBHL 8/14/2010 3:00:00 24.8 6.91 786 4.66EBHL 8/14/2010 4:00:00 24.63 6.89 856 4.57EBHL 8/14/2010 5:00:00 24.47 6.87 863 4.62EBHL 8/14/2010 6:00:00 24.35 6.85 839 4.55EBHL 8/14/2010 7:00:00 24.27 6.84 855 4.6EBHL 8/14/2010 8:00:00 24.3 6.87 915 4.77EBHL 8/14/2010 9:00:00 24.56 6.92 955 5.34EBHL 8/14/2010 10:00:00 24.73 6.96 974 5.68EBHL 8/14/2010 11:00:00 25.73 7.05 993 6.34EBHL 8/14/2010 12:00:00 26.24 7.13 1016 7.06EBHL 8/14/2010 13:00:00 26.93 7.19 1025 7.79EBHL 8/14/2010 14:00:00 27.16 7.22 1032 8.29EBHL 8/14/2010 15:00:00 27.6 7.27 1026 8.67

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/14/2010 16:00:00 27.99 7.3 1022 8.64EBHL 8/14/2010 17:00:00 28.22 7.31 1015 8.73EBHL 8/14/2010 18:00:00 28.05 7.28 1011 9.1EBHL 8/14/2010 19:00:00 27.72 7.27 1009 8.64EBHL 8/14/2010 20:00:00 27.37 7.23 1007 7.88EBHL 8/14/2010 21:00:00 27.25 7.21 1006 7.54EBHL 8/14/2010 22:00:00 26.64 7.15 994 7.19EBHL 8/14/2010 23:00:00 26.3 7.12 987 6.73EBHL 8/15/2010 0:00:00 25.9 7.07 983 6.27EBHL 8/15/2010 1:00:00 25.48 7.04 980 5.89EBHL 8/15/2010 2:00:00 25.11 7.01 988 5.62EBHL 8/15/2010 3:00:00 24.84 7 997 5.39EBHL 8/15/2010 4:00:00 24.68 6.99 1001 5.22EBHL 8/15/2010 5:00:00 24.59 6.99 992 5.02EBHL 8/15/2010 6:00:00 24.54 6.97 981 4.82EBHL 8/15/2010 7:00:00 24.52 6.97 982 4.79EBHL 8/15/2010 8:00:00 24.63 6.98 991 5.19EBHL 8/15/2010 9:00:00 24.99 7.02 983 5.72EBHL 8/15/2010 10:00:00 25.54 7.07 985 6.26EBHL 8/15/2010 11:00:00 26.01 7.12 982 6.76EBHL 8/15/2010 12:00:00 26.35 7.12 977 7.62EBHL 8/15/2010 13:00:00 26.86 7.1 977 8.36EBHL 8/15/2010 14:00:00 27.45 7.16 991 9.04EBHL 8/15/2010 15:00:00 27.79 7.23 1003 9.41EBHL 8/15/2010 16:00:00 27.85 7.31 1013 9.64EBHL 8/15/2010 17:00:00 28.33 7.43 1011 10.02EBHL 8/15/2010 18:00:00 27.01 7.31 1001 9.36EBHL 8/15/2010 19:00:00 26.03 7.17 1006 8.6EBHL 8/15/2010 20:00:00 25.79 7.17 1007 7.9EBHL 8/15/2010 21:00:00 25.63 7.17 1003 7.47EBHL 8/15/2010 22:00:00 25.43 7.16 1002 7.12EBHL 8/15/2010 23:00:00 24.98 7.14 1003 6.8EBHL 8/16/2010 0:00:00 24.36 7.09 1011 6.21EBHL 8/16/2010 1:00:00 23.78 7.04 1024 6.01EBHL 8/16/2010 2:00:00 23.3 7 1035 5.99EBHL 8/16/2010 3:00:00 22.92 6.96 1040 5.57EBHL 8/16/2010 4:00:00 22.6 6.95 1046 5.49EBHL 8/16/2010 5:00:00 22.25 6.96 1061 5.4EBHL 8/16/2010 6:00:00 22.03 6.97 1074 5.27EBHL 8/16/2010 7:00:00 21.9 6.97 1078 5.24EBHL 8/16/2010 8:00:00 22.04 7 1080 5.74EBHL 8/16/2010 9:00:00 22.43 7.02 1072 6.37EBHL 8/16/2010 10:00:00 22.89 7.08 1064 6.93EBHL 8/16/2010 11:00:00 23.34 7.11 1058 7.46

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/16/2010 12:00:00 23.84 7.14 1052 8.1EBHL 8/16/2010 13:00:00 24.62 7.2 1048 8.72EBHL 8/16/2010 14:00:00 25.36 7.23 1047 9.15EBHL 8/16/2010 15:00:00 25.85 7.31 1053 9.51EBHL 8/16/2010 16:00:00 26.03 7.35 1059 9.85EBHL 8/16/2010 17:00:00 25.92 7.37 1076 9.76EBHL 8/16/2010 18:00:00 25.46 7.32 1094 9.38EBHL 8/16/2010 19:00:00 24.85 7.26 1102 8.69EBHL 8/16/2010 20:00:00 24.2 7.1 1098 7.51EBHL 8/16/2010 21:00:00 24 7.06 1094 7.31EBHL 8/16/2010 22:00:00 23.81 7.04 1076 7.23EBHL 8/16/2010 23:00:00 23.53 7.02 1080 7.21EBHL 8/17/2010 0:00:00 23.17 6.97 1079 6.97EBHL 8/17/2010 1:00:00 22.84 6.92 1081 6.62EBHL 8/17/2010 2:00:00 22.46 6.88 1085 6.32EBHL 8/17/2010 3:00:00 22.12 6.85 1084 6.06EBHL 8/17/2010 4:00:00 21.79 6.83 1086 5.85EBHL 8/17/2010 5:00:00 21.52 6.82 1090 5.63EBHL 8/17/2010 6:00:00 21.28 6.81 1094 5.45EBHL 8/17/2010 7:00:00 21.26 6.83 1101 5.4EBHL 8/17/2010 8:00:00 21.49 6.88 1109 5.79EBHL 8/17/2010 9:00:00 21.63 6.92 1114 6.25EBHL 8/17/2010 10:00:00 22.22 6.98 1133 7.2EBHL 8/17/2010 11:00:00 23.35 7.07 1139 8.12EBHL 8/17/2010 12:00:00 22.97 7.06 1128 8.27EBHL 8/17/2010 13:00:00 22.91 7.06 1116 8.52EBHL 8/17/2010 14:00:00 23.12 7.02 1102 8.9EBHL 8/17/2010 15:00:00 23.41 7.05 1102 9.06EBHL 8/17/2010 16:00:00 23.58 7.1 1103 9.12EBHL 8/17/2010 17:00:00 23.5 7.13 1103 8.91EBHL 8/17/2010 18:00:00 23.31 7.11 1112 8.53EBHL 8/17/2010 19:00:00 23.06 7.08 1121 7.95EBHL 8/17/2010 20:00:00 22.89 7.06 1131 7.37EBHL 8/17/2010 21:00:00 22.79 7.05 1138 7.13EBHL 8/17/2010 22:00:00 22.61 7.03 1140 7.07EBHL 8/17/2010 23:00:00 22.42 7 1144 6.92EBHL 8/18/2010 0:00:00 22.17 6.98 1137 6.86EBHL 8/18/2010 1:00:00 21.89 6.96 1127 6.71EBHL 8/18/2010 2:00:00 21.73 6.94 1124 6.44EBHL 8/18/2010 3:00:00 21.55 6.9 1120 5.99EBHL 8/18/2010 4:00:00 21.39 6.88 1128 5.83EBHL 8/18/2010 5:00:00 21.22 6.86 1141 5.12EBHL 8/18/2010 6:00:00 21.04 6.85 1168 5.3EBHL 8/18/2010 7:00:00 20.94 6.84 1154 5.21

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/18/2010 8:00:00 21.06 6.87 1165 5.59EBHL 8/18/2010 9:00:00 21.4 6.92 1167 6.45EBHL 8/18/2010 10:00:00 22 6.98 1155 7.3EBHL 8/18/2010 11:00:00 22.54 7.03 1156 7.91EBHL 8/18/2010 12:00:00 23.63 7.08 1154 8.76EBHL 8/18/2010 13:00:00 23.82 7.08 1155 9.07EBHL 8/18/2010 14:00:00 24.04 7.08 1147 9.26EBHL 8/18/2010 15:00:00 24.37 7.09 1135 9.31EBHL 8/18/2010 16:00:00 25.51 7.15 1130 9.7EBHL 8/18/2010 17:00:00 25.65 7.17 1132 9.77EBHL 8/18/2010 18:00:00 25.59 7.18 1138 9.64EBHL 8/18/2010 19:00:00 24.99 7.16 1149 9.03EBHL 8/18/2010 20:00:00 24.38 7.11 1163 7.99EBHL 8/18/2010 21:00:00 24.12 7.08 1170 7.47EBHL 8/18/2010 22:00:00 23.98 7.05 1172 7.28EBHL 8/18/2010 23:00:00 23.86 7.04 1166 7.19EBHL 8/19/2010 0:00:00 23.54 7.02 1157 6.97EBHL 8/19/2010 1:00:00 23.22 6.98 1150 6.58EBHL 8/19/2010 2:00:00 22.82 6.93 1145 6.35EBHL 8/19/2010 3:00:00 22.47 6.88 1143 6.01EBHL 8/19/2010 4:00:00 22.12 6.85 1146 5.77EBHL 8/19/2010 5:00:00 21.78 6.84 1151 5.36EBHL 8/19/2010 6:00:00 21.44 6.82 1157 5.14EBHL 8/19/2010 7:00:00 21.28 6.82 1160 5.1EBHL 8/19/2010 8:00:00 21.53 6.87 1172 5.66EBHL 8/19/2010 9:00:00 22.16 6.95 1189 6.77EBHL 8/19/2010 10:00:00 22.75 7.01 1204 7.79EBHL 8/19/2010 11:00:00 23.73 7.1 1201 8.6EBHL 8/19/2010 12:00:00 24.72 7.18 1200 9.23EBHL 8/19/2010 13:00:00 25.19 7.2 1182 9.74EBHL 8/19/2010 14:00:00 25.97 7.2 1166 10.2EBHL 8/19/2010 15:00:00 26.47 7.23 1164 10.42EBHL 8/19/2010 16:00:00 26.61 7.26 1168 10.39EBHL 8/19/2010 17:00:00 26.28 7.27 1174 9.98EBHL 8/19/2010 18:00:00 26.28 7.25 1170 9.76EBHL 8/19/2010 19:00:00 25.87 7.22 1167 8.92EBHL 8/19/2010 20:00:00 25.48 7.16 1167 7.71EBHL 8/19/2010 21:00:00 25.21 7.12 1165 6.95EBHL 8/19/2010 22:00:00 25.04 7.12 1170 6.68EBHL 8/19/2010 23:00:00 24.81 7.08 1169 6.42EBHL 8/20/2010 0:00:00 24.56 7.05 1173 6.12EBHL 8/20/2010 1:00:00 24.22 7.01 1181 5.88EBHL 8/20/2010 2:00:00 23.86 6.97 1187 5.52EBHL 8/20/2010 3:00:00 23.48 6.94 1199 5.29

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/20/2010 4:00:00 23.07 6.9 1202 4.87EBHL 8/20/2010 5:00:00 23.02 6.95 1233 4.37EBHL 8/20/2010 6:00:00 23.09 7.01 1250 4.05EBHL 8/20/2010 7:00:00 23.1 7.02 1255 4.03EBHL 8/20/2010 8:00:00 23.24 7.06 1261 4.81EBHL 8/20/2010 9:00:00 23.95 7.17 1258 6.39EBHL 8/20/2010 10:00:00 24.67 7.28 1256 7.7EBHL 8/20/2010 11:00:00 25.02 7.32 1247 8.04EBHL 8/20/2010 12:00:00 25.23 7.15 1175 9EBHL 8/20/2010 13:00:00 25.76 6.97 1128 9.89EBHL 8/20/2010 14:00:00 26.31 7 1127 10.25EBHL 8/20/2010 15:00:00 26.6 7.04 1137 10.23EBHL 8/20/2010 16:00:00 25.63 6.98 1150 9.04EBHL 8/20/2010 17:00:00 26.12 7.01 1169 9.16EBHL 8/20/2010 18:00:00 25.91 7.07 1181 8.49EBHL 8/20/2010 19:00:00 25.62 7.07 1192 7.34EBHL 8/20/2010 20:00:00 25.56 7.06 1192 6.71EBHL 8/20/2010 21:00:00 25.35 7.04 1189 6.37EBHL 8/20/2010 22:00:00 25.07 7.01 1191 6.23EBHL 8/20/2010 23:00:00 24.84 7.01 1193 6.08EBHL 8/21/2010 0:00:00 24.37 6.98 1193 5.97EBHL 8/21/2010 1:00:00 24.15 6.96 1190 5.7EBHL 8/21/2010 2:00:00 23.83 7 1141 6.12EBHL 8/21/2010 3:00:00 23.67 6.98 1092 6.22EBHL 8/21/2010 4:00:00 23.46 6.85 622 5.84EBHL 8/21/2010 5:00:00 23.4 6.79 527 5.8EBHL 8/21/2010 6:00:00 23.39 6.8 622 5.61EBHL 8/21/2010 7:00:00 23.32 6.75 698 5.71EBHL 8/21/2010 8:00:00 23.52 6.78 700 5.64EBHL 8/21/2010 9:00:00 23.79 6.79 707 5.68EBHL 8/21/2010 10:00:00 23.67 6.71 739 5.73EBHL 8/21/2010 11:00:00 24.14 6.69 748 5.8EBHL 8/21/2010 12:00:00 24.49 6.69 752 6.03EBHL 8/21/2010 13:00:00 24.74 6.71 781 6.36EBHL 8/21/2010 14:00:00 25.28 6.77 823 6.71EBHL 8/21/2010 15:00:00 25.71 6.83 850 7.5EBHL 8/21/2010 16:00:00 25.86 6.86 866 7.73EBHL 8/21/2010 17:00:00 25.97 6.88 881 8.03EBHL 8/21/2010 18:00:00 26 6.89 884 8.06EBHL 8/21/2010 19:00:00 26 6.94 906 7.77EBHL 8/21/2010 20:00:00 25.83 6.96 910 7.29EBHL 8/21/2010 21:00:00 25.6 6.96 905 6.95EBHL 8/21/2010 22:00:00 25.34 6.96 895 6.71EBHL 8/21/2010 23:00:00 25.04 6.93 886 6.32

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/22/2010 0:00:00 24.8 6.91 877 5.91EBHL 8/22/2010 1:00:00 24.58 6.88 870 5.79EBHL 8/22/2010 2:00:00 24.42 6.89 863 5.69EBHL 8/22/2010 3:00:00 24.21 6.92 853 5.62EBHL 8/22/2010 4:00:00 24.02 6.92 851 5.57EBHL 8/22/2010 5:00:00 23.8 6.91 852 5.43EBHL 8/22/2010 6:00:00 23.55 6.91 853 5.36EBHL 8/22/2010 7:00:00 23.35 6.9 861 5.36EBHL 8/22/2010 8:00:00 23.38 6.91 865 5.65EBHL 8/22/2010 9:00:00 23.48 6.96 874 6.03EBHL 8/22/2010 10:00:00 24.14 7.02 878 6.65EBHL 8/22/2010 11:00:00 24.59 7.07 879 7.16EBHL 8/22/2010 12:00:00 25.11 7.11 879 7.84EBHL 8/22/2010 13:00:00 25.81 7.16 883 8.61EBHL 8/22/2010 14:00:00 26.44 7.22 888 9.25EBHL 8/22/2010 15:00:00 27.04 7.28 895 9.67EBHL 8/22/2010 16:00:00 27.11 7.25 896 9.86EBHL 8/22/2010 17:00:00 27.03 7.28 909 9.88EBHL 8/22/2010 18:00:00 26.68 7.26 916 9.49EBHL 8/22/2010 19:00:00 26.17 7.19 924 8.58EBHL 8/22/2010 20:00:00 25.85 7.13 936 7.77EBHL 8/22/2010 21:00:00 25.63 7.11 955 7.41EBHL 8/22/2010 22:00:00 25.24 7.08 964 7.27EBHL 8/22/2010 23:00:00 24.82 7.04 971 7.02EBHL 8/23/2010 0:00:00 24.27 6.99 976 6.71EBHL 8/23/2010 1:00:00 23.74 6.94 980 6.47EBHL 8/23/2010 2:00:00 23.35 6.93 996 6.19EBHL 8/23/2010 3:00:00 22.99 6.94 1019 5.96EBHL 8/23/2010 4:00:00 22.47 6.85 1025 6.09EBHL 8/23/2010 5:00:00 22.13 6.82 1023 5.98EBHL 8/23/2010 6:00:00 22.04 6.87 950 5.65EBHL 8/23/2010 7:00:00 22 6.88 1008 5.58EBHL 8/23/2010 8:00:00 22.29 6.93 1009 6.07EBHL 8/23/2010 9:00:00 22.76 7 1018 6.7EBHL 8/23/2010 10:00:00 23.11 7.03 1031 7.23EBHL 8/23/2010 11:00:00 23.62 7.06 1024 7.78EBHL 8/23/2010 12:00:00 24.14 7.11 1019 8.51EBHL 8/23/2010 13:00:00 25.43 7.2 1016 9.29EBHL 8/23/2010 14:00:00 25.45 7.21 1016 9.48EBHL 8/23/2010 15:00:00 25.95 7.26 1015 9.83EBHL 8/23/2010 16:00:00 26.22 7.31 1026 10.23EBHL 8/23/2010 17:00:00 26 7.32 1047 10.1EBHL 8/23/2010 18:00:00 25.59 7.29 1067 9.61EBHL 8/23/2010 19:00:00 25.02 7.22 1071 8.74

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/23/2010 20:00:00 24.73 7.17 1059 7.89EBHL 8/23/2010 21:00:00 24.65 7.16 1057 7.62EBHL 8/23/2010 22:00:00 24.48 7.14 1060 7.52EBHL 8/23/2010 23:00:00 24.17 7.1 1063 7.36EBHL 8/24/2010 0:00:00 23.78 7.05 1068 7.12EBHL 8/24/2010 1:00:00 23.31 6.99 1083 6.74EBHL 8/24/2010 2:00:00 22.9 6.94 1082 6.41EBHL 8/24/2010 3:00:00 22.53 6.91 1073 6.21EBHL 8/24/2010 4:00:00 22.21 6.88 1070 6.01EBHL 8/24/2010 5:00:00 21.98 6.88 1069 5.81EBHL 8/24/2010 6:00:00 21.63 6.86 1064 5.63EBHL 8/24/2010 7:00:00 21.47 6.88 1074 5.58EBHL 8/24/2010 8:00:00 21.77 6.92 1076 6.16EBHL 8/24/2010 9:00:00 22.33 7 1076 7.01EBHL 8/24/2010 10:00:00 22.83 7.05 1080 7.78EBHL 8/24/2010 11:00:00 23.54 7.11 1083 8.5EBHL 8/24/2010 12:00:00 24.22 7.11 1079 9.23EBHL 8/24/2010 13:00:00 25.22 7.17 1080 10.2EBHL 8/24/2010 14:00:00 25.62 7.17 1084 10.46EBHL 8/24/2010 15:00:00 25.88 7.18 1094 10.51EBHL 8/24/2010 16:00:00 25.57 7.16 1096 10.25EBHL 8/24/2010 17:00:00 26.1 7.22 1082 10.62EBHL 8/24/2010 18:00:00 25.8 7.2 1081 10.03EBHL 8/24/2010 19:00:00 25.41 7.16 1079 8.99EBHL 8/24/2010 20:00:00 25.11 7.12 1081 8EBHL 8/24/2010 21:00:00 24.99 7.11 1084 7.84EBHL 8/24/2010 22:00:00 24.73 7.11 1088 7.74EBHL 8/24/2010 23:00:00 24.73 7.11 1090 7.67EBHL 8/25/2010 0:00:00 24.3 7.06 1092 7.42EBHL 8/25/2010 1:00:00 23.72 7.01 1094 7.08EBHL 8/25/2010 2:00:00 23.07 6.95 1111 6.69EBHL 8/25/2010 3:00:00 22.66 6.94 1104 6.4EBHL 8/25/2010 4:00:00 22.25 6.96 1101 6.17EBHL 8/25/2010 5:00:00 21.86 6.96 1101 5.9EBHL 8/25/2010 6:00:00 21.49 6.95 1107 5.69EBHL 8/25/2010 7:00:00 21.2 6.96 1123 5.67EBHL 8/25/2010 8:00:00 21.23 6.99 1135 6.39EBHL 8/25/2010 9:00:00 21.73 7.05 1132 7.31EBHL 8/25/2010 10:00:00 22.31 7.11 1127 7.97EBHL 8/25/2010 11:00:00 22.83 7.16 1121 8.63EBHL 8/25/2010 12:00:00 23.41 7.16 1109 9.33EBHL 8/25/2010 13:00:00 23.97 7.17 1105 9.99EBHL 8/25/2010 14:00:00 24.62 7.21 1096 10.58EBHL 8/25/2010 15:00:00 24.68 7.23 1102 10.57

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/25/2010 16:00:00 25.17 7.28 1106 10.74EBHL 8/25/2010 17:00:00 24.85 7.3 1110 10.35EBHL 8/25/2010 18:00:00 24.66 7.31 1109 10.08EBHL 8/25/2010 19:00:00 23.84 7.23 1108 8.9EBHL 8/25/2010 20:00:00 23.46 7.2 1113 7.83EBHL 8/25/2010 21:00:00 23.38 7.2 1132 7.38EBHL 8/25/2010 22:00:00 23.17 7.2 1147 7.26EBHL 8/25/2010 23:00:00 22.84 7.17 1152 7.23EBHL 8/26/2010 0:00:00 22.43 7.16 1154 7.22EBHL 8/26/2010 1:00:00 22 7.13 1154 7.07EBHL 8/26/2010 2:00:00 21.61 7.09 1141 6.9EBHL 8/26/2010 3:00:00 21.26 7.06 1140 6.7EBHL 8/26/2010 4:00:00 20.9 7.04 1138 6.47EBHL 8/26/2010 5:00:00 20.61 7.05 1137 6.23EBHL 8/26/2010 6:00:00 20.35 7.05 1143 5.99EBHL 8/26/2010 7:00:00 20.07 7.04 1157 5.94EBHL 8/26/2010 8:00:00 20.37 7.09 1183 6.68EBHL 8/26/2010 9:00:00 20.9 7.13 1191 7.74EBHL 8/26/2010 10:00:00 21.45 7.19 1180 8.39EBHL 8/26/2010 11:00:00 21.96 7.24 1162 8.83EBHL 8/26/2010 12:00:00 22.36 7.21 1147 9.12EBHL 8/26/2010 13:00:00 23.37 7.24 1144 10.19EBHL 8/26/2010 14:00:00 24.16 7.29 1146 10.84EBHL 8/26/2010 15:00:00 24.53 7.3 1139 11.12EBHL 8/26/2010 16:00:00 24.96 7.38 1127 11.52EBHL 8/26/2010 17:00:00 24.92 7.39 1128 11.39EBHL 8/26/2010 18:00:00 24.48 7.37 1127 10.81EBHL 8/26/2010 19:00:00 23.75 7.29 1124 9.31EBHL 8/26/2010 20:00:00 23.2 7.23 1132 8.03EBHL 8/26/2010 21:00:00 22.97 7.21 1132 7.72EBHL 8/26/2010 22:00:00 22.84 7.21 1133 7.76EBHL 8/26/2010 23:00:00 22.66 7.19 1138 7.75EBHL 8/27/2010 0:00:00 22.4 7.16 1139 7.6EBHL 8/27/2010 1:00:00 22.01 7.12 1141 7.32EBHL 8/27/2010 2:00:00 21.59 7.08 1142 6.99EBHL 8/27/2010 3:00:00 21.18 7.03 1143 6.7EBHL 8/27/2010 4:00:00 20.75 7 1148 6.45EBHL 8/27/2010 5:00:00 20.42 6.98 1159 6.27EBHL 8/27/2010 6:00:00 20.06 6.98 1172 6.09EBHL 8/27/2010 7:00:00 19.8 7 1181 5.99EBHL 8/27/2010 8:00:00 20.05 7.03 1183 6.69EBHL 8/27/2010 9:00:00 20.67 7.08 1184 7.68EBHL 8/27/2010 10:00:00 21.36 7.14 1186 8.3EBHL 8/27/2010 11:00:00 22.12 7.21 1185 8.95

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/27/2010 12:00:00 22.75 7.23 1178 9.31EBHL 8/27/2010 13:00:00 23.56 7.22 1173 9.86EBHL 8/27/2010 14:00:00 24.47 7.13 1131 10.44EBHL 8/27/2010 15:00:00 25.03 7.18 1138 10.6EBHL 8/27/2010 16:00:00 25.34 7.25 1143 10.54EBHL 8/27/2010 17:00:00 25.29 7.27 1144 10.25EBHL 8/27/2010 18:00:00 24.95 7.25 1128 9.48EBHL 8/27/2010 19:00:00 24.33 7.2 1127 8.18EBHL 8/27/2010 20:00:00 23.85 7.16 1129 7.04EBHL 8/27/2010 21:00:00 23.61 7.16 1134 6.75EBHL 8/27/2010 22:00:00 23.46 7.17 1142 6.73EBHL 8/27/2010 23:00:00 23.26 7.17 1151 6.73EBHL 8/28/2010 0:00:00 23.03 7.16 1145 6.73EBHL 8/28/2010 1:00:00 22.77 7.15 1145 6.73EBHL 8/28/2010 2:00:00 22.39 7.1 1148 6.58EBHL 8/28/2010 3:00:00 22 7.05 1159 6.41EBHL 8/28/2010 4:00:00 21.66 7.03 1173 6.18EBHL 8/28/2010 5:00:00 21.3 7.05 1176 6EBHL 8/28/2010 6:00:00 20.94 7.04 1185 5.83EBHL 8/28/2010 7:00:00 20.6 7.05 1197 5.77EBHL 8/28/2010 8:00:00 20.74 7.1 1206 6.5EBHL 8/28/2010 9:00:00 21.32 7.18 1213 7.6EBHL 8/28/2010 10:00:00 22.03 7.27 1221 8.36EBHL 8/28/2010 11:00:00 22.81 7.35 1231 8.97EBHL 8/28/2010 12:00:00 23.52 7.4 1239 9.49EBHL 8/28/2010 13:00:00 24.2 7.41 1244 9.98EBHL 8/28/2010 14:00:00 24.82 7.4 1238 10.39EBHL 8/28/2010 15:00:00 25.34 7.38 1217 10.66EBHL 8/28/2010 16:00:00 25.63 7.34 1195 10.63EBHL 8/28/2010 17:00:00 25.54 7.28 1181 10.1EBHL 8/28/2010 18:00:00 25.08 7.27 1183 9.47EBHL 8/28/2010 19:00:00 24.27 7.16 1155 8.12EBHL 8/28/2010 20:00:00 23.62 7.12 1162 6.98EBHL 8/28/2010 21:00:00 23.41 7.16 1176 6.72EBHL 8/28/2010 22:00:00 23.34 7.19 1180 6.65EBHL 8/28/2010 23:00:00 23.18 7.2 1183 6.71EBHL 8/29/2010 0:00:00 23 7.2 1183 6.7EBHL 8/29/2010 1:00:00 22.79 7.2 1186 6.45EBHL 8/29/2010 2:00:00 22.55 7.19 1187 6.44EBHL 8/29/2010 3:00:00 22.29 7.18 1191 6.19EBHL 8/29/2010 4:00:00 22 7.17 1195 6EBHL 8/29/2010 5:00:00 21.79 7.17 1196 5.7EBHL 8/29/2010 6:00:00 21.58 7.17 1200 5.57EBHL 8/29/2010 7:00:00 21.33 7.17 1208 5.42

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/29/2010 8:00:00 21.59 7.22 1220 5.94EBHL 8/29/2010 9:00:00 22.07 7.27 1236 6.92EBHL 8/29/2010 10:00:00 22.97 7.34 1241 7.85EBHL 8/29/2010 11:00:00 24.03 7.41 1241 8.59EBHL 8/29/2010 12:00:00 24.88 7.49 1235 9.26EBHL 8/29/2010 13:00:00 25.5 7.51 1226 9.78EBHL 8/29/2010 14:00:00 26.19 7.5 1202 10.28EBHL 8/29/2010 15:00:00 26.5 7.45 1184 10.47EBHL 8/29/2010 16:00:00 26.41 7.37 1165 10.36EBHL 8/29/2010 17:00:00 26.65 7.35 1164 10.42EBHL 8/29/2010 18:00:00 26.07 7.29 1161 9.56EBHL 8/29/2010 19:00:00 25.57 7.23 1160 8.3EBHL 8/29/2010 20:00:00 25.21 7.21 1163 7.24EBHL 8/29/2010 21:00:00 25.06 7.22 1164 6.9EBHL 8/29/2010 22:00:00 24.92 7.23 1173 6.68EBHL 8/29/2010 23:00:00 24.73 7.22 1179 6.55EBHL 8/30/2010 0:00:00 24.46 7.2 1187 6.34EBHL 8/30/2010 1:00:00 24.17 7.21 1190 6.2EBHL 8/30/2010 2:00:00 23.99 7.21 1195 6.15EBHL 8/30/2010 3:00:00 23.65 7.16 1183 5.93EBHL 8/30/2010 4:00:00 23.31 7.13 1171 5.76EBHL 8/30/2010 5:00:00 23.13 7.15 1181 5.12EBHL 8/30/2010 6:00:00 22.97 7.17 1187 4.7EBHL 8/30/2010 7:00:00 22.79 7.19 1188 4.45EBHL 8/30/2010 8:00:00 22.99 7.23 1203 5.14EBHL 8/30/2010 9:00:00 23.63 7.31 1212 6.54EBHL 8/30/2010 10:00:00 24.28 7.39 1216 7.67EBHL 8/30/2010 11:00:00 25.03 7.45 1217 8.37EBHL 8/30/2010 12:00:00 25.14 7.45 1208 8.61EBHL 8/30/2010 13:00:00 25.49 7.41 1190 9.59EBHL 8/30/2010 14:00:00 25.32 7.3 1145 10.04EBHL 8/30/2010 15:00:00 26.21 7.34 1131 10.6EBHL 8/30/2010 16:00:00 26.21 7.36 1151 9.1EBHL 8/30/2010 17:00:00 25.86 7.36 1160 8.32EBHL 8/30/2010 18:00:00 25.67 7.34 1168 7.95EBHL 8/30/2010 19:00:00 25.24 7.3 1174 7.37EBHL 8/30/2010 20:00:00 24.94 7.28 1175 5.57EBHL 8/30/2010 21:00:00 24.87 7.29 1180 6.28EBHL 8/30/2010 22:00:00 24.68 7.3 1176 6.31EBHL 8/30/2010 23:00:00 24.52 7.29 1172 5.39EBHL 8/31/2010 0:00:00 24.32 7.26 1173 5.32EBHL 8/31/2010 1:00:00 24.1 7.24 1171 5.64EBHL 8/31/2010 2:00:00 23.85 7.23 1168 5.22EBHL 8/31/2010 3:00:00 23.64 7.25 1169 5.61

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 8/31/2010 4:00:00 23.45 7.25 1174 5.37EBHL 8/31/2010 5:00:00 23.29 7.26 1178 5.23EBHL 8/31/2010 6:00:00 23.22 7.29 1190 5.13EBHL 8/31/2010 7:00:00 23.12 7.32 1200 5.05EBHL 8/31/2010 8:00:00 23.23 7.37 1207 5.59EBHL 8/31/2010 9:00:00 23.96 7.47 1220 7.05EBHL 8/31/2010 10:00:00 24.77 7.54 1244 8.06EBHL 8/31/2010 11:00:00 25.44 7.57 1263 8.7EBHL 8/31/2010 12:00:00 26.05 7.59 1253 9.36EBHL 8/31/2010 13:00:00 26.75 7.55 1211 9.99EBHL 8/31/2010 14:00:00 27.29 7.53 1182 10.47EBHL 8/31/2010 15:00:00 26.99 7.49 1168 10.21EBHL 8/31/2010 16:00:00 27.3 7.45 1149 10.31EBHL 8/31/2010 17:00:00 26.95 7.45 1162 9.6EBHL 8/31/2010 18:00:00 26.61 7.41 1159 8.76EBHL 8/31/2010 19:00:00 26.13 7.39 1166 7.66EBHL 8/31/2010 20:00:00 25.89 7.36 1162 6.41EBHL 8/31/2010 21:00:00 25.76 7.36 1160 6.09EBHL 8/31/2010 22:00:00 25.67 7.37 1163 5.84EBHL 8/31/2010 23:00:00 25.56 7.4 1170 5.85EBHL 9/1/2010 0:00:00 25.23 7.36 1157 5.84EBHL 9/1/2010 1:00:00 24.9 7.34 1155 5.9EBHL 9/1/2010 2:00:00 24.6 7.31 1158 5.82EBHL 9/1/2010 3:00:00 24.32 7.28 1166 5.58EBHL 9/1/2010 4:00:00 24.15 7.26 1178 5.53EBHL 9/1/2010 5:00:00 24.08 7.25 1187 4.89EBHL 9/1/2010 6:00:00 23.9 7.3 1178 4.77EBHL 9/1/2010 7:00:00 23.71 7.33 1175 4.89EBHL 9/1/2010 8:00:00 23.54 7.35 1176 4.88EBHL 9/1/2010 9:00:00 23.44 7.35 1201 4.97EBHL 9/1/2010 10:00:00 23.97 7.35 986 5.49EBHL 9/1/2010 11:00:00 24.09 7.34 980 6.2EBHL 9/1/2010 12:00:00 24.06 7.28 1067 6.44EBHL 9/1/2010 13:00:00 24.12 7.13 1068 6.7EBHL 9/1/2010 14:00:00 24.77 7.13 1074 7.48EBHL 9/1/2010 15:00:00 25.46 7.17 1091 6.78EBHL 9/1/2010 16:00:00 25.04 7.16 1104 6.75EBHL 9/1/2010 17:00:00 25 7.17 1091 5.38EBHL 9/1/2010 18:00:00 24.89 7.18 1071 4.38EBHL 9/1/2010 19:00:00 24.78 7.21 1061 5.43EBHL 9/1/2010 20:00:00 24.7 7.21 1060 4.84EBHL 9/1/2010 21:00:00 24.61 7.22 1069 5.6EBHL 9/1/2010 22:00:00 24.46 7.22 1083 5.14EBHL 9/1/2010 23:00:00 24.21 7.22 1088 5.27

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/2/2010 0:00:00 24.05 7.21 1084 4.99EBHL 9/2/2010 1:00:00 23.84 7.2 1075 4.94EBHL 9/2/2010 2:00:00 23.71 7.16 1063 4.58EBHL 9/2/2010 3:00:00 23.55 7.12 1060 4.34EBHL 9/2/2010 4:00:00 23.45 7.13 1066 3.81EBHL 9/2/2010 5:00:00 23.35 7.17 1075 3.1EBHL 9/2/2010 6:00:00 23.29 7.22 1087 3.62EBHL 9/2/2010 7:00:00 23.21 7.23 1126 3.2EBHL 9/2/2010 8:00:00 23.17 7.27 1137 3.18EBHL 9/2/2010 9:00:00 23.14 7.31 1138 3.54EBHL 9/2/2010 10:00:00 23.09 7.36 1124 4.17EBHL 9/2/2010 11:00:00 23.02 7.35 1141 3.98EBHL 9/2/2010 12:00:00 23.16 7.29 764 5.1EBHL 9/2/2010 13:00:00 23.43 7.16 758 5.65EBHL 9/2/2010 14:00:00 23.79 7.2 875 5.9EBHL 9/2/2010 15:00:00 24.23 7.29 937 6.1EBHL 9/2/2010 16:00:00 24.37 7.23 971 6.47EBHL 9/2/2010 17:00:00 24.47 7.15 995 6.85EBHL 9/2/2010 18:00:00 24.1 7.08 979 6.01EBHL 9/2/2010 19:00:00 23.93 7.04 960 5.94EBHL 9/2/2010 20:00:00 23.96 7.06 969 5.69EBHL 9/2/2010 21:00:00 24.07 7.11 989 5.15EBHL 9/2/2010 22:00:00 23.37 7.25 898 5.42EBHL 9/2/2010 23:00:00 22.98 7.14 756 3.68EBHL 9/3/2010 0:00:00 22.09 7.05 489 2.91EBHL 9/3/2010 1:00:00 22.16 7.01 525 2.9EBHL 9/3/2010 2:00:00 22.65 7.03 698 1.97EBHL 9/3/2010 3:00:00 22.48 6.99 639 3.77EBHL 9/3/2010 4:00:00 22.31 6.96 630 4.79EBHL 9/3/2010 5:00:00 22.16 7.02 643 4.57EBHL 9/3/2010 6:00:00 21.94 7.02 663 4.24EBHL 9/3/2010 7:00:00 21.76 7 694 4.52EBHL 9/3/2010 8:00:00 21.64 7.03 708 4.97EBHL 9/3/2010 9:00:00 21.56 7.05 714 4.91EBHL 9/3/2010 10:00:00 21.53 7.28 703 6.31EBHL 9/3/2010 11:00:00 21.66 7.3 695 6.47EBHL 9/3/2010 12:00:00 21.8 7.3 685 6.67EBHL 9/3/2010 13:00:00 22.21 7.34 671 6.93EBHL 9/3/2010 14:00:00 22.5 7.4 660 7.02EBHL 9/3/2010 15:00:00 22.23 7.43 659 7.08EBHL 9/3/2010 16:00:00 22.36 7.45 661 7.37EBHL 9/3/2010 17:00:00 21.97 7.43 662 7.22EBHL 9/3/2010 18:00:00 21.81 7.43 667 7.4EBHL 9/3/2010 19:00:00 21.45 7.42 667 7.27

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/3/2010 20:00:00 21.19 7.44 660 7.05EBHL 9/3/2010 21:00:00 20.93 7.44 657 6.93EBHL 9/3/2010 22:00:00 20.69 7.43 661 6.86EBHL 9/3/2010 23:00:00 20.54 7.43 667 6.83EBHL 9/4/2010 0:00:00 20.43 7.41 670 6.77EBHL 9/4/2010 1:00:00 20.19 7.4 673 6.71EBHL 9/4/2010 2:00:00 20.11 7.41 680 6.65EBHL 9/4/2010 3:00:00 19.96 7.41 685 6.62EBHL 9/4/2010 4:00:00 19.76 7.42 690 6.55EBHL 9/4/2010 5:00:00 19.47 7.43 694 6.54EBHL 9/4/2010 6:00:00 19.21 7.44 697 6.46EBHL 9/4/2010 7:00:00 18.96 7.44 702 6.52EBHL 9/4/2010 8:00:00 18.84 7.47 706 6.77EBHL 9/4/2010 9:00:00 18.87 7.5 710 7.07EBHL 9/4/2010 10:00:00 18.98 7.58 710 7.32EBHL 9/4/2010 11:00:00 19.54 7.54 732 7.91EBHL 9/4/2010 12:00:00 19.97 7.53 742 8.32EBHL 9/4/2010 13:00:00 20.6 7.61 752 8.82EBHL 9/4/2010 14:00:00 21.11 7.65 763 9.17EBHL 9/4/2010 15:00:00 21.49 7.66 769 9.41EBHL 9/4/2010 16:00:00 21.69 7.68 771 9.47EBHL 9/4/2010 17:00:00 21.55 7.68 776 9.34EBHL 9/4/2010 18:00:00 21.1 7.64 781 8.98EBHL 9/4/2010 19:00:00 20.82 7.6 787 8.51EBHL 9/4/2010 20:00:00 20.73 7.56 804 8.13EBHL 9/4/2010 21:00:00 20.41 7.55 824 8.01EBHL 9/4/2010 22:00:00 20.02 7.52 834 7.88EBHL 9/4/2010 23:00:00 19.63 7.5 832 7.69EBHL 9/5/2010 0:00:00 19.28 7.48 824 7.51EBHL 9/5/2010 1:00:00 18.94 7.46 821 7.35EBHL 9/5/2010 2:00:00 18.63 7.45 820 7.23EBHL 9/5/2010 3:00:00 18.38 7.45 824 7.14EBHL 9/5/2010 4:00:00 18.14 7.44 840 7.09EBHL 9/5/2010 5:00:00 17.9 7.44 847 7.05EBHL 9/5/2010 6:00:00 17.66 7.46 839 6.99EBHL 9/5/2010 7:00:00 17.48 7.47 830 6.99EBHL 9/5/2010 8:00:00 17.62 7.51 827 7.32EBHL 9/5/2010 9:00:00 18.02 7.54 828 7.76EBHL 9/5/2010 10:00:00 18.49 7.57 834 8.16EBHL 9/5/2010 11:00:00 18.88 7.59 855 8.53EBHL 9/5/2010 12:00:00 19.76 7.61 877 9.12EBHL 9/5/2010 13:00:00 20.04 7.59 887 9.6EBHL 9/5/2010 14:00:00 20.93 7.62 880 10.01EBHL 9/5/2010 15:00:00 21.49 7.63 877 10.15

East Branch DuPage River Hidden Lake Page 55 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/5/2010 16:00:00 22.02 7.56 886 10.28EBHL 9/5/2010 17:00:00 21.67 7.63 881 10.08EBHL 9/5/2010 18:00:00 21.43 7.58 881 9.18EBHL 9/5/2010 19:00:00 21.37 7.55 882 8.58EBHL 9/5/2010 20:00:00 21.35 7.54 883 8.25EBHL 9/5/2010 21:00:00 21.21 7.54 887 8.07EBHL 9/5/2010 22:00:00 20.92 7.51 893 7.87EBHL 9/5/2010 23:00:00 20.67 7.5 897 7.66EBHL 9/6/2010 0:00:00 20.4 7.48 902 7.45EBHL 9/6/2010 1:00:00 20.22 7.47 910 7.25EBHL 9/6/2010 2:00:00 19.84 7.45 936 7.03EBHL 9/6/2010 3:00:00 19.6 7.44 956 6.87EBHL 9/6/2010 4:00:00 19.4 7.44 961 6.76EBHL 9/6/2010 5:00:00 18.95 7.48 951 6.92EBHL 9/6/2010 6:00:00 19.09 7.44 939 6.55EBHL 9/6/2010 7:00:00 18.85 7.45 933 6.55EBHL 9/6/2010 8:00:00 18.69 7.48 931 6.71EBHL 9/6/2010 9:00:00 19.13 7.53 930 7.41EBHL 9/6/2010 10:00:00 19.76 7.58 935 8.13EBHL 9/6/2010 11:00:00 20.23 7.63 938 8.7EBHL 9/6/2010 12:00:00 20.12 7.64 938 9.09EBHL 9/6/2010 13:00:00 20.33 7.62 942 9.37EBHL 9/6/2010 14:00:00 20.22 7.59 945 9.14EBHL 9/6/2010 15:00:00 20.54 7.54 952 9.19EBHL 9/6/2010 16:00:00 21.3 7.56 954 9.57EBHL 9/6/2010 17:00:00 21.49 7.56 956 9.62EBHL 9/6/2010 18:00:00 21.29 7.55 966 9.38EBHL 9/6/2010 19:00:00 20.86 7.51 977 8.63EBHL 9/6/2010 20:00:00 20.62 7.49 979 8.07EBHL 9/6/2010 21:00:00 20.49 7.49 979 7.84EBHL 9/6/2010 22:00:00 20.42 7.48 989 7.66EBHL 9/6/2010 23:00:00 20.35 7.45 1004 7.51EBHL 9/7/2010 0:00:00 20.18 7.44 1010 7.36EBHL 9/7/2010 1:00:00 20.06 7.41 1006 7.21EBHL 9/7/2010 2:00:00 19.91 7.4 998 7.1EBHL 9/7/2010 3:00:00 19.74 7.39 994 6.96EBHL 9/7/2010 4:00:00 19.69 7.4 996 6.84EBHL 9/7/2010 5:00:00 19.57 7.41 996 6.73EBHL 9/7/2010 6:00:00 19.04 7.43 997 6.66EBHL 9/7/2010 7:00:00 18.59 7.45 999 6.63EBHL 9/7/2010 8:00:00 18.56 7.51 999 7.24EBHL 9/7/2010 9:00:00 18.94 7.58 1001 8.03EBHL 9/7/2010 10:00:00 19.48 7.63 1003 8.6EBHL 9/7/2010 11:00:00 20.01 7.68 1004 9.07

East Branch DuPage River Hidden Lake Page 56 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/7/2010 12:00:00 20.61 7.67 1001 9.46EBHL 9/7/2010 13:00:00 21.2 7.65 997 9.84EBHL 9/7/2010 14:00:00 21.87 7.64 998 10.17EBHL 9/7/2010 15:00:00 22.3 7.66 997 10.29EBHL 9/7/2010 16:00:00 22.41 7.7 1000 10.31EBHL 9/7/2010 17:00:00 22.07 7.73 1011 10.17EBHL 9/7/2010 18:00:00 21.42 7.71 1026 9.64EBHL 9/7/2010 19:00:00 20.63 7.64 1037 8.68EBHL 9/7/2010 20:00:00 20.48 7.57 1038 7.86EBHL 9/7/2010 21:00:00 20.39 7.55 1036 7.64EBHL 9/7/2010 22:00:00 20.36 7.55 1031 7.55EBHL 9/7/2010 23:00:00 20.25 7.54 1025 7.45EBHL 9/8/2010 0:00:00 20.05 7.51 1020 7.35EBHL 9/8/2010 1:00:00 19.69 7.48 1019 7.2EBHL 9/8/2010 2:00:00 19.26 7.45 1018 7.04EBHL 9/8/2010 3:00:00 18.79 7.43 1021 6.83EBHL 9/8/2010 4:00:00 18.44 7.41 1027 6.62EBHL 9/8/2010 5:00:00 18.04 7.41 1031 6.5EBHL 9/8/2010 6:00:00 17.62 7.42 1036 6.37EBHL 9/8/2010 7:00:00 17.34 7.44 1040 6.31EBHL 9/8/2010 8:00:00 17.34 7.49 1045 6.9EBHL 9/8/2010 9:00:00 17.88 7.56 1048 7.99EBHL 9/8/2010 10:00:00 18.64 7.62 1053 8.72EBHL 9/8/2010 11:00:00 19.43 7.67 1055 9.26EBHL 9/8/2010 12:00:00 20.32 7.67 1053 9.76EBHL 9/8/2010 13:00:00 21.11 7.63 1049 10.26EBHL 9/8/2010 14:00:00 21.86 7.64 1047 10.61EBHL 9/8/2010 15:00:00 22.51 7.6 1037 10.88EBHL 9/8/2010 16:00:00 22.69 7.66 1038 11.05EBHL 9/8/2010 17:00:00 22.58 7.64 1038 10.84EBHL 9/8/2010 18:00:00 22.03 7.65 1050 10.28EBHL 9/8/2010 19:00:00 21.21 7.59 1067 8.95EBHL 9/8/2010 20:00:00 20.58 7.54 1079 7.81EBHL 9/8/2010 21:00:00 20.32 7.53 1079 7.4EBHL 9/8/2010 22:00:00 20.18 7.52 1072 7.37EBHL 9/8/2010 23:00:00 20.04 7.52 1059 7.36EBHL 9/9/2010 0:00:00 19.73 7.51 1054 7.32EBHL 9/9/2010 1:00:00 19.41 7.49 1052 7.15EBHL 9/9/2010 2:00:00 19.03 7.47 1049 7.01EBHL 9/9/2010 3:00:00 18.63 7.44 1050 6.8EBHL 9/9/2010 4:00:00 18.21 7.42 1054 6.56EBHL 9/9/2010 5:00:00 17.89 7.42 1055 6.41EBHL 9/9/2010 6:00:00 17.43 7.43 1062 6.3EBHL 9/9/2010 7:00:00 17.03 7.45 1070 6.23

East Branch DuPage River Hidden Lake Page 57 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/9/2010 8:00:00 17.06 7.49 1074 6.74EBHL 9/9/2010 9:00:00 17.79 7.56 1081 7.87EBHL 9/9/2010 10:00:00 18.86 7.63 1085 8.88EBHL 9/9/2010 11:00:00 19.29 7.69 1082 9.51EBHL 9/9/2010 12:00:00 20.53 7.72 1079 10.22EBHL 9/9/2010 13:00:00 20.73 7.67 1069 10.55EBHL 9/9/2010 14:00:00 20.25 7.6 1059 10.49EBHL 9/9/2010 15:00:00 20.74 7.59 1055 10.83EBHL 9/9/2010 16:00:00 20.86 7.61 1057 10.89EBHL 9/9/2010 17:00:00 20.83 7.61 1060 10.63EBHL 9/9/2010 18:00:00 20.77 7.61 1063 10.33EBHL 9/9/2010 19:00:00 20.23 7.57 1063 9.37EBHL 9/9/2010 20:00:00 19.68 7.51 1062 8.3EBHL 9/9/2010 21:00:00 19.35 7.49 1067 7.92EBHL 9/9/2010 22:00:00 19.23 7.48 1069 7.84EBHL 9/9/2010 23:00:00 19.07 7.47 1078 7.69EBHL 9/10/2010 0:00:00 18.96 7.46 1084 7.59EBHL 9/10/2010 1:00:00 18.8 7.44 1088 7.48EBHL 9/10/2010 2:00:00 18.52 7.42 1087 7.31EBHL 9/10/2010 3:00:00 18.24 7.4 1082 7.07EBHL 9/10/2010 4:00:00 17.97 7.38 1076 6.96EBHL 9/10/2010 5:00:00 17.65 7.38 1078 6.72EBHL 9/10/2010 6:00:00 17.42 7.38 1079 6.53EBHL 9/10/2010 7:00:00 17.13 7.41 1092 6.41EBHL 9/10/2010 8:00:00 17.2 7.45 1092 6.91EBHL 9/10/2010 9:00:00 17.77 7.54 1095 8.2EBHL 9/10/2010 10:00:00 18.65 7.62 1105 9.33EBHL 9/10/2010 11:00:00 19.6 7.69 1107 10.04EBHL 9/10/2010 12:00:00 20.53 7.71 1110 10.65EBHL 9/10/2010 13:00:00 21.36 7.65 1108 10.98EBHL 9/10/2010 14:00:00 22.12 7.59 1108 11.41EBHL 9/10/2010 15:00:00 22.72 7.62 1105 11.7EBHL 9/10/2010 16:00:00 22.98 7.6 1080 11.58EBHL 9/10/2010 17:00:00 22.63 7.63 1092 11.17EBHL 9/10/2010 18:00:00 21.83 7.63 1087 10.35EBHL 9/10/2010 19:00:00 21.16 7.56 1083 9.05EBHL 9/10/2010 20:00:00 20.79 7.51 1087 8.01EBHL 9/10/2010 21:00:00 20.79 7.49 1088 7.6EBHL 9/10/2010 22:00:00 20.93 7.49 1094 7.37EBHL 9/10/2010 23:00:00 20.93 7.47 1092 7.33EBHL 9/11/2010 0:00:00 20.75 7.46 1092 7.25EBHL 9/11/2010 1:00:00 20.51 7.44 1094 7.05EBHL 9/11/2010 2:00:00 20.25 7.42 1092 6.87EBHL 9/11/2010 3:00:00 20 7.41 1093 6.62

East Branch DuPage River Hidden Lake Page 58 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/11/2010 4:00:00 19.79 7.39 1098 6.35EBHL 9/11/2010 5:00:00 19.6 7.38 1102 6.14EBHL 9/11/2010 6:00:00 19.33 7.37 1105 5.95EBHL 9/11/2010 7:00:00 18.99 7.37 1109 5.79EBHL 9/11/2010 8:00:00 18.81 7.38 1109 5.8EBHL 9/11/2010 9:00:00 18.74 7.41 1107 6.17EBHL 9/11/2010 10:00:00 18.58 7.43 1109 6.41EBHL 9/11/2010 11:00:00 18.56 7.48 1097 7.18EBHL 9/11/2010 12:00:00 18.91 7.53 1123 8.09EBHL 9/11/2010 13:00:00 19.31 7.52 1084 8.38EBHL 9/11/2010 14:00:00 19.7 7.47 963 8.79EBHL 9/11/2010 15:00:00 20.52 7.42 991 9.28EBHL 9/11/2010 16:00:00 21.19 7.42 1042 9.77EBHL 9/11/2010 17:00:00 21.55 7.35 1035 10EBHL 9/11/2010 18:00:00 21.27 7.33 1053 9.54EBHL 9/11/2010 19:00:00 20.58 7.3 1064 8.59EBHL 9/11/2010 20:00:00 19.95 7.28 1069 7.62EBHL 9/11/2010 21:00:00 19.71 7.27 1083 7.22EBHL 9/11/2010 22:00:00 19.56 7.28 1093 7.03EBHL 9/11/2010 23:00:00 19.47 7.29 1090 6.91EBHL 9/12/2010 0:00:00 19.18 7.29 1095 6.83EBHL 9/12/2010 1:00:00 18.84 7.28 1102 6.66EBHL 9/12/2010 2:00:00 18.54 7.27 1104 6.48EBHL 9/12/2010 3:00:00 18.21 7.27 1114 6.3EBHL 9/12/2010 4:00:00 17.79 7.26 1136 6.15EBHL 9/12/2010 5:00:00 17.47 7.27 1152 5.98EBHL 9/12/2010 6:00:00 17.07 7.27 1158 5.85EBHL 9/12/2010 7:00:00 16.82 7.27 1154 5.84EBHL 9/12/2010 8:00:00 16.87 7.3 1149 6.17EBHL 9/12/2010 9:00:00 17.5 7.36 1153 7.29EBHL 9/12/2010 10:00:00 18.61 7.44 1151 8.75EBHL 9/12/2010 11:00:00 19.91 7.53 1156 10.02EBHL 9/12/2010 12:00:00 21.1 7.63 1153 10.99EBHL 9/12/2010 13:00:00 21.91 7.67 1144 11.22EBHL 9/12/2010 14:00:00 22.46 7.7 1132 11.3EBHL 9/12/2010 15:00:00 23.06 7.65 1121 11.57EBHL 9/12/2010 16:00:00 23.49 7.59 1103 11.47EBHL 9/12/2010 17:00:00 23.4 7.56 1102 11.1EBHL 9/12/2010 18:00:00 22.86 7.51 1094 10.36EBHL 9/12/2010 19:00:00 22.12 7.46 1103 9.36EBHL 9/12/2010 20:00:00 21.52 7.38 1104 7.88EBHL 9/12/2010 21:00:00 21.2 7.35 1101 7.2EBHL 9/12/2010 22:00:00 21.04 7.35 1113 6.98EBHL 9/12/2010 23:00:00 20.98 7.34 1115 6.8

East Branch DuPage River Hidden Lake Page 59 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/13/2010 0:00:00 20.93 7.33 1110 6.78EBHL 9/13/2010 1:00:00 20.65 7.32 1111 6.72EBHL 9/13/2010 2:00:00 20.44 7.31 1112 6.52EBHL 9/13/2010 3:00:00 20.13 7.28 1117 6.26EBHL 9/13/2010 4:00:00 19.91 7.25 1113 6.06EBHL 9/13/2010 5:00:00 19.56 7.24 1118 5.88EBHL 9/13/2010 6:00:00 19.1 7.24 1126 5.64EBHL 9/13/2010 7:00:00 18.73 7.25 1130 5.45EBHL 9/13/2010 8:00:00 18.68 7.27 1133 5.68EBHL 9/13/2010 9:00:00 19.2 7.32 1142 6.62EBHL 9/13/2010 10:00:00 20.34 7.41 1145 8.27EBHL 9/13/2010 11:00:00 21.46 7.5 1141 9.43EBHL 9/13/2010 12:00:00 22.52 7.57 1134 10.26EBHL 9/13/2010 13:00:00 23.44 7.58 1116 10.78EBHL 9/13/2010 14:00:00 24.07 7.52 1094 11.07EBHL 9/13/2010 15:00:00 24.33 7.52 1095 11.33EBHL 9/13/2010 16:00:00 24.49 7.51 1082 11.55EBHL 9/13/2010 17:00:00 24.17 7.51 1076 11.11EBHL 9/13/2010 18:00:00 23.51 7.53 1090 10.65EBHL 9/13/2010 19:00:00 22.72 7.5 1090 9.53EBHL 9/13/2010 20:00:00 22.05 7.42 1088 7.9EBHL 9/13/2010 21:00:00 21.59 7.39 1080 7.39EBHL 9/13/2010 22:00:00 21.35 7.38 1098 7.09EBHL 9/13/2010 23:00:00 21.1 7.37 1100 6.9EBHL 9/14/2010 0:00:00 20.93 7.37 981 6.79EBHL 9/14/2010 1:00:00 20.65 7.35 1101 6.57EBHL 9/14/2010 2:00:00 20.35 7.31 1096 6.37EBHL 9/14/2010 3:00:00 19.9 7.27 1098 6.15EBHL 9/14/2010 4:00:00 19.52 7.25 1106 5.98EBHL 9/14/2010 5:00:00 19.07 7.23 1116 5.71EBHL 9/14/2010 6:00:00 18.66 7.25 1119 5.62EBHL 9/14/2010 7:00:00 18.2 7.26 1122 5.4EBHL 9/14/2010 8:00:00 18.14 7.26 1118 5.65EBHL 9/14/2010 9:00:00 18.7 7.3 1116 6.57EBHL 9/14/2010 10:00:00 19.77 7.38 1114 8.03EBHL 9/14/2010 11:00:00 20.81 7.46 1111 9.22EBHL 9/14/2010 12:00:00 21.8 7.52 1107 10.03EBHL 9/14/2010 13:00:00 22.7 7.55 1097 10.72EBHL 9/14/2010 14:00:00 23.43 7.51 1086 11.17EBHL 9/14/2010 15:00:00 23.86 7.47 1071 11.24EBHL 9/14/2010 16:00:00 24.15 7.46 1068 11.33EBHL 9/14/2010 17:00:00 23.9 7.44 1056 11.19EBHL 9/14/2010 18:00:00 23.08 7.36 1048 10.21EBHL 9/14/2010 19:00:00 22.45 7.37 1053 9.84

East Branch DuPage River Hidden Lake Page 60 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/14/2010 20:00:00 21.75 7.33 1056 8.44EBHL 9/14/2010 21:00:00 21.3 7.3 1058 7.69EBHL 9/14/2010 22:00:00 21.05 7.29 1062 7.52EBHL 9/14/2010 23:00:00 20.79 7.29 1068 7.41EBHL 9/15/2010 0:00:00 20.52 7.28 1067 7.31EBHL 9/15/2010 1:00:00 20.24 7.24 1066 7.1EBHL 9/15/2010 2:00:00 19.96 7.21 1062 6.9EBHL 9/15/2010 3:00:00 19.64 7.18 1058 6.67EBHL 9/15/2010 4:00:00 19.3 7.16 1059 6.37EBHL 9/15/2010 5:00:00 19.04 7.14 1060 6.15EBHL 9/15/2010 6:00:00 18.69 7.16 1064 5.91EBHL 9/15/2010 7:00:00 18.46 7.17 1068 5.76EBHL 9/15/2010 8:00:00 18.51 7.19 1070 5.96EBHL 9/15/2010 9:00:00 18.82 7.24 1076 6.91EBHL 9/15/2010 10:00:00 19.53 7.31 1084 8.4EBHL 9/15/2010 11:00:00 20.28 7.39 1089 9.56EBHL 9/15/2010 12:00:00 20.55 7.45 1089 10.43EBHL 9/15/2010 13:00:00 21.39 7.49 1080 11.18EBHL 9/15/2010 14:00:00 22.11 7.39 1061 10.5EBHL 9/15/2010 15:00:00 22.06 7.39 1062 10.63EBHL 9/15/2010 16:00:00 22.05 7.38 1057 10.4EBHL 9/15/2010 17:00:00 21.97 7.35 1055 10.08EBHL 9/15/2010 18:00:00 21.62 7.34 1057 9.26EBHL 9/15/2010 19:00:00 21.32 7.33 1063 8.44EBHL 9/15/2010 20:00:00 21.06 7.32 1068 7.62EBHL 9/15/2010 21:00:00 21.01 7.32 1080 7.29EBHL 9/15/2010 22:00:00 20.98 7.32 1081 7.22EBHL 9/15/2010 23:00:00 20.98 7.32 1083 7.12EBHL 9/16/2010 0:00:00 20.93 7.31 1083 6.98EBHL 9/16/2010 1:00:00 20.84 7.3 1076 6.88EBHL 9/16/2010 2:00:00 20.82 7.28 1073 6.6EBHL 9/16/2010 3:00:00 20.73 7.24 1076 6.3EBHL 9/16/2010 4:00:00 20.58 7.23 1078 6.06EBHL 9/16/2010 5:00:00 20.43 7.2 1080 5.7EBHL 9/16/2010 6:00:00 20.27 7.2 1082 5.47EBHL 9/16/2010 7:00:00 20.13 7.21 1089 5.28EBHL 9/16/2010 8:00:00 19.99 7.21 1098 5.19EBHL 9/16/2010 9:00:00 20.04 7.24 1101 5.65EBHL 9/16/2010 10:00:00 20.16 7.31 1104 6.77EBHL 9/16/2010 11:00:00 20.7 7.38 1102 8.25EBHL 9/16/2010 12:00:00 20.43 7.43 1089 8.68EBHL 9/16/2010 13:00:00 20.3 7.43 1075 8.88EBHL 9/16/2010 14:00:00 21.29 7.42 1064 9.81EBHL 9/16/2010 15:00:00 21.48 7.4 1058 10.09

East Branch DuPage River Hidden Lake Page 61 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/16/2010 16:00:00 21.84 7.39 1054 10.1EBHL 9/16/2010 17:00:00 21.06 7.39 1049 9.47EBHL 9/16/2010 18:00:00 20.36 7.35 1046 8.62EBHL 9/16/2010 19:00:00 20.03 7.3 1048 7.79EBHL 9/16/2010 20:00:00 19.8 7.26 1048 7.18EBHL 9/16/2010 21:00:00 19.62 7.26 1048 6.98EBHL 9/16/2010 22:00:00 19.38 7.27 1047 6.83EBHL 9/16/2010 23:00:00 19.2 7.27 1047 6.7EBHL 9/17/2010 0:00:00 19.13 7.26 1048 6.58EBHL 9/17/2010 1:00:00 18.93 7.24 1046 6.52EBHL 9/17/2010 2:00:00 18.45 7.22 1042 6.49EBHL 9/17/2010 3:00:00 18.09 7.19 1042 6.35EBHL 9/17/2010 4:00:00 17.76 7.17 1041 6.16EBHL 9/17/2010 5:00:00 17.38 7.15 1048 6.04EBHL 9/17/2010 6:00:00 16.98 7.15 1053 5.94EBHL 9/17/2010 7:00:00 16.66 7.16 1053 5.9EBHL 9/17/2010 8:00:00 16.56 7.19 1054 6.13EBHL 9/17/2010 9:00:00 17.22 7.23 1053 6.95EBHL 9/17/2010 10:00:00 18.35 7.3 1053 8.25EBHL 9/17/2010 11:00:00 19.47 7.37 1054 9.33EBHL 9/17/2010 12:00:00 20.5 7.43 1053 10.11EBHL 9/17/2010 13:00:00 21.39 7.44 1050 10.43EBHL 9/17/2010 14:00:00 22.11 7.39 1041 10.61EBHL 9/17/2010 15:00:00 22.6 7.35 1036 10.97EBHL 9/17/2010 16:00:00 23.01 7.31 1028 11.08EBHL 9/17/2010 17:00:00 22.88 7.31 1028 11.05EBHL 9/17/2010 18:00:00 22.24 7.31 1029 10.6EBHL 9/17/2010 19:00:00 21.47 7.3 1029 9.5EBHL 9/17/2010 20:00:00 20.83 7.27 1029 8.36EBHL 9/17/2010 21:00:00 20.44 7.25 1029 7.77EBHL 9/17/2010 22:00:00 20.28 7.25 1029 7.57EBHL 9/17/2010 23:00:00 20.13 7.25 1032 7.46EBHL 9/18/2010 0:00:00 19.96 7.27 1033 7.36EBHL 9/18/2010 1:00:00 19.85 7.26 1032 7.16EBHL 9/18/2010 2:00:00 19.72 7.25 1032 6.98EBHL 9/18/2010 3:00:00 19.6 7.22 1030 6.71EBHL 9/18/2010 4:00:00 19.37 7.21 1032 6.44EBHL 9/18/2010 5:00:00 19.18 7.2 1040 6.21EBHL 9/18/2010 6:00:00 19.13 7.18 1053 6.06EBHL 9/18/2010 7:00:00 18.93 7.18 1072 5.81EBHL 9/18/2010 8:00:00 18.86 7.18 1085 5.79EBHL 9/18/2010 9:00:00 18.96 7.2 1088 6.1EBHL 9/18/2010 10:00:00 18.98 7.22 1086 6.54EBHL 9/18/2010 11:00:00 18.67 7.25 1074 6.6

East Branch DuPage River Hidden Lake Page 62 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/18/2010 12:00:00 18.77 7.26 1062 6.87EBHL 9/18/2010 13:00:00 19.16 7.3 1056 7.51EBHL 9/18/2010 14:00:00 19.43 7.31 1052 7.85EBHL 9/18/2010 15:00:00 19.47 7.27 992 7.82EBHL 9/18/2010 16:00:00 19.73 7.18 958 7.89EBHL 9/18/2010 17:00:00 19.7 7.14 929 7.66EBHL 9/18/2010 18:00:00 19.53 7.12 971 7.41EBHL 9/18/2010 19:00:00 19.4 7.09 973 7.26EBHL 9/18/2010 20:00:00 19.34 7.1 984 7.15EBHL 9/18/2010 21:00:00 19.2 7.13 999 7.2EBHL 9/18/2010 22:00:00 19.03 7.15 1012 7.14EBHL 9/18/2010 23:00:00 18.99 7.16 1020 7.03EBHL 9/19/2010 0:00:00 18.86 7.15 1017 6.89EBHL 9/19/2010 1:00:00 18.6 7.13 1015 6.69EBHL 9/19/2010 2:00:00 18.53 7.12 1018 6.5EBHL 9/19/2010 3:00:00 18.42 7.11 1028 6.33EBHL 9/19/2010 4:00:00 18.21 7.11 1047 6.16EBHL 9/19/2010 5:00:00 17.94 7.11 1069 5.99EBHL 9/19/2010 6:00:00 17.75 7.12 1085 5.84EBHL 9/19/2010 7:00:00 17.57 7.15 1086 5.77EBHL 9/19/2010 8:00:00 17.46 7.16 1080 5.84EBHL 9/19/2010 9:00:00 17.85 7.2 1067 6.56EBHL 9/19/2010 10:00:00 18.44 7.26 1060 7.55EBHL 9/19/2010 11:00:00 19.47 7.33 1054 8.44EBHL 9/19/2010 12:00:00 20.18 7.39 1052 9.07EBHL 9/19/2010 13:00:00 20.31 7.41 1047 9.49EBHL 9/19/2010 14:00:00 20.37 7.41 1036 9.56EBHL 9/19/2010 15:00:00 20.25 7.4 1026 9.75EBHL 9/19/2010 16:00:00 20.26 7.33 1007 9.52EBHL 9/19/2010 17:00:00 20.2 7.26 997 9.21EBHL 9/19/2010 18:00:00 19.87 7.23 991 8.96EBHL 9/19/2010 19:00:00 19.56 7.22 991 8.7EBHL 9/19/2010 20:00:00 19.45 7.22 994 8.56EBHL 9/19/2010 21:00:00 19.33 7.23 997 3.71EBHL 9/19/2010 22:00:00 19.24 7.22 1000 2.89EBHL 9/19/2010 23:00:00 19.12 7.22 1001 3.73EBHL 9/20/2010 0:00:00 18.99 7.22 1003 3.18EBHL 9/20/2010 1:00:00 18.89 7.2 1007 7.71EBHL 9/20/2010 2:00:00 18.81 7.19 1007 7.39EBHL 9/20/2010 3:00:00 18.7 7.15 1012 5.19EBHL 9/20/2010 4:00:00 18.57 7.14 1020 5.15EBHL 9/20/2010 5:00:00 18.43 7.13 1030 6.14EBHL 9/20/2010 6:00:00 18.29 7.13 1050 6.33EBHL 9/20/2010 7:00:00 18.18 7.14 1066 6.15

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/20/2010 8:00:00 18.08 7.16 1076 5.98EBHL 9/20/2010 9:00:00 18.23 7.18 1074 6.27EBHL 9/20/2010 10:00:00 18.7 7.22 1063 7.08EBHL 9/20/2010 11:00:00 19.3 7.26 1049 7.95EBHL 9/20/2010 12:00:00 20.15 7.28 1040 8.61EBHL 9/20/2010 13:00:00 20.83 7.29 1024 8.9EBHL 9/20/2010 14:00:00 20.31 7.24 1006 8.65EBHL 9/20/2010 15:00:00 20.59 7.22 999 8.67EBHL 9/20/2010 16:00:00 20.92 7.17 981 8.58EBHL 9/20/2010 17:00:00 21.37 7.17 983 8.57EBHL 9/20/2010 18:00:00 21.6 7.18 988 8.71EBHL 9/20/2010 19:00:00 21.21 7.18 995 8.49EBHL 9/20/2010 20:00:00 20.81 7.18 1000 8.01EBHL 9/20/2010 21:00:00 20.6 7.17 1002 7.34EBHL 9/20/2010 22:00:00 20.52 7.16 999 7.06EBHL 9/20/2010 23:00:00 20.53 7.14 997 7.14EBHL 9/21/2010 0:00:00 20.53 7.12 993 7.03EBHL 9/21/2010 1:00:00 20.47 7.1 990 6.93EBHL 9/21/2010 2:00:00 20.35 7.1 986 6.74EBHL 9/21/2010 3:00:00 20.2 7.03 981 6.43EBHL 9/21/2010 4:00:00 20.07 7 983 6.13EBHL 9/21/2010 5:00:00 19.93 6.99 985 5.92EBHL 9/21/2010 6:00:00 19.76 7.01 991 5.64EBHL 9/21/2010 7:00:00 19.58 7.01 997 5.37EBHL 9/21/2010 8:00:00 19.6 7.03 1002 5.33EBHL 9/21/2010 9:00:00 20.05 7.06 1008 5.72EBHL 9/21/2010 10:00:00 20.88 7.1 1019 6.75EBHL 9/21/2010 11:00:00 21.8 7.13 1029 7.81EBHL 9/21/2010 12:00:00 22.69 7.17 1030 8.28EBHL 9/21/2010 13:00:00 23.59 7.3 1067 8.41EBHL 9/21/2010 14:00:00 23.91 7.35 1050 9.36EBHL 9/21/2010 15:00:00 24.13 7.33 1037 9.35EBHL 9/21/2010 16:00:00 24.08 7.3 1031 9.22EBHL 9/21/2010 17:00:00 24.09 7.27 1031 9.05EBHL 9/21/2010 18:00:00 23.59 7.24 1032 8.38EBHL 9/21/2010 19:00:00 22.98 7.22 1025 7.64EBHL 9/21/2010 20:00:00 22.57 7.25 1030 7.01EBHL 9/21/2010 21:00:00 22.57 7.23 1051 6.76EBHL 9/21/2010 22:00:00 22.52 7.24 1067 6.57EBHL 9/21/2010 23:00:00 22.28 7.24 1074 6.21EBHL 9/22/2010 0:00:00 22.15 7.21 1037 5.91EBHL 9/22/2010 1:00:00 21.93 7.16 1039 5.85EBHL 9/22/2010 2:00:00 21.56 7.13 1060 5.51EBHL 9/22/2010 3:00:00 21.25 7.09 1080 5.08

East Branch DuPage River Hidden Lake Page 64 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/22/2010 4:00:00 20.98 7.07 1090 4.61EBHL 9/22/2010 5:00:00 20.76 7.07 1096 4.11EBHL 9/22/2010 6:00:00 20.52 7.08 1107 4.07EBHL 9/22/2010 7:00:00 20.28 7.08 1122 4.39EBHL 9/22/2010 8:00:00 20.22 7.1 1124 4.63EBHL 9/22/2010 9:00:00 20.36 7.13 1127 4.91EBHL 9/22/2010 10:00:00 20.4 7.15 1124 5.24EBHL 9/22/2010 11:00:00 20.5 7.18 1109 5.91EBHL 9/22/2010 12:00:00 21.21 7.24 1110 6.82EBHL 9/22/2010 13:00:00 21.55 7.24 1096 7.51EBHL 9/22/2010 14:00:00 21.89 7.18 1069 7.96EBHL 9/22/2010 15:00:00 22.49 7.2 1077 8.38EBHL 9/22/2010 16:00:00 22.94 7.16 1057 8.78EBHL 9/22/2010 17:00:00 22.78 7.16 1064 8.81EBHL 9/22/2010 18:00:00 22.51 7.19 1072 8.55EBHL 9/22/2010 19:00:00 22.04 7.19 1072 7.98EBHL 9/22/2010 20:00:00 21.54 7.18 1075 7.36EBHL 9/22/2010 21:00:00 21.27 7.17 1066 6.97EBHL 9/22/2010 22:00:00 21.11 7.16 1064 6.74EBHL 9/22/2010 23:00:00 20.98 7.15 1066 6.69EBHL 9/23/2010 0:00:00 20.88 7.14 1059 6.64EBHL 9/23/2010 1:00:00 20.75 7.11 1055 6.49EBHL 9/23/2010 2:00:00 20.71 7.07 1050 6.57EBHL 9/23/2010 3:00:00 20.54 7.05 1050 6.43EBHL 9/23/2010 4:00:00 20.34 7.03 1062 6.05EBHL 9/23/2010 5:00:00 20.23 7.02 1061 5.79EBHL 9/23/2010 6:00:00 20.1 7.02 1064 5.64EBHL 9/23/2010 7:00:00 19.95 7.01 1075 5.43EBHL 9/23/2010 8:00:00 19.99 7.03 1091 5.45EBHL 9/23/2010 9:00:00 20.47 7.06 1101 5.94EBHL 9/23/2010 10:00:00 21.32 7.14 1111 7EBHL 9/23/2010 11:00:00 22.41 7.22 1106 8.02EBHL 9/23/2010 12:00:00 23.22 7.3 1091 8.74EBHL 9/23/2010 13:00:00 23.94 7.34 1076 9.15EBHL 9/23/2010 14:00:00 24.3 7.34 1055 9.44EBHL 9/23/2010 15:00:00 24.28 7.33 1050 9.74EBHL 9/23/2010 16:00:00 24.31 7.3 1044 9.47EBHL 9/23/2010 17:00:00 24.18 7.3 1041 9.31EBHL 9/23/2010 18:00:00 23.72 7.28 1041 8.66EBHL 9/23/2010 19:00:00 23.23 7.24 1045 7.97EBHL 9/23/2010 20:00:00 22.88 7.22 1050 7.38EBHL 9/23/2010 21:00:00 22.7 7.21 1057 7.03EBHL 9/23/2010 22:00:00 22.5 7.24 1069 6.86EBHL 9/23/2010 23:00:00 22.24 7.24 1083 6.7

East Branch DuPage River Hidden Lake Page 65 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/24/2010 0:00:00 21.97 7.23 1103 6.51EBHL 9/24/2010 1:00:00 21.76 7.22 1099 6.4EBHL 9/24/2010 2:00:00 21.64 7.19 1073 6.29EBHL 9/24/2010 3:00:00 21.5 7.15 1076 6EBHL 9/24/2010 4:00:00 21.36 7.12 1067 5.9EBHL 9/24/2010 5:00:00 21.23 7.11 1051 5.95EBHL 9/24/2010 6:00:00 21.04 7.14 1045 6.11EBHL 9/24/2010 7:00:00 21.06 7.14 1044 6.31EBHL 9/24/2010 8:00:00 20.96 7.12 859 5.99EBHL 9/24/2010 9:00:00 20.72 7.08 799 6EBHL 9/24/2010 10:00:00 20.36 7.11 918 6.1EBHL 9/24/2010 11:00:00 20.01 7.17 1055 6.3EBHL 9/24/2010 12:00:00 20.2 7.12 1070 6.82EBHL 9/24/2010 13:00:00 20.78 7.04 1068 7.48EBHL 9/24/2010 14:00:00 21.55 6.98 1036 7.79EBHL 9/24/2010 15:00:00 21.91 7.02 1022 7.83EBHL 9/24/2010 16:00:00 21.89 7.04 1000 7.81EBHL 9/24/2010 17:00:00 21.51 7.03 987 7.66EBHL 9/24/2010 18:00:00 20.85 7.02 981 7.42EBHL 9/24/2010 19:00:00 20.11 6.98 979 7.08EBHL 9/24/2010 20:00:00 19.72 6.94 989 6.61EBHL 9/24/2010 21:00:00 19.44 6.92 994 6.33EBHL 9/24/2010 22:00:00 19.29 6.92 984 6.31EBHL 9/24/2010 23:00:00 19.15 6.9 973 6.3EBHL 9/25/2010 0:00:00 18.88 6.88 966 6.23EBHL 9/25/2010 1:00:00 18.47 6.87 966 6.17EBHL 9/25/2010 2:00:00 18.21 6.85 972 5.99EBHL 9/25/2010 3:00:00 17.89 6.83 979 5.85EBHL 9/25/2010 4:00:00 17.61 6.82 987 5.66EBHL 9/25/2010 5:00:00 17.25 6.81 997 5.55EBHL 9/25/2010 6:00:00 16.94 6.81 1007 5.41EBHL 9/25/2010 7:00:00 16.63 6.8 1014 5.32EBHL 9/25/2010 8:00:00 16.54 6.81 1022 5.44EBHL 9/25/2010 9:00:00 16.68 6.84 1029 5.82EBHL 9/25/2010 10:00:00 17.53 6.95 1036 7.08EBHL 9/25/2010 11:00:00 18.51 7.05 1044 8.06EBHL 9/25/2010 12:00:00 19.27 7.15 1046 8.84EBHL 9/25/2010 13:00:00 19.06 7.15 1043 9.01EBHL 9/25/2010 14:00:00 19.02 7.14 1049 9.1EBHL 9/25/2010 15:00:00 18.79 7.09 1044 9.05EBHL 9/25/2010 16:00:00 18.7 7 1023 8.8EBHL 9/25/2010 17:00:00 18.69 6.99 1020 8.81EBHL 9/25/2010 18:00:00 18.45 6.97 1014 8.56EBHL 9/25/2010 19:00:00 18.12 6.95 1007 8.36

East Branch DuPage River Hidden Lake Page 66 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/25/2010 20:00:00 17.89 6.94 1003 8.25EBHL 9/25/2010 21:00:00 17.69 6.94 1006 8.17EBHL 9/25/2010 22:00:00 17.54 6.93 1011 7.89EBHL 9/25/2010 23:00:00 17.5 6.93 1011 7.92EBHL 9/26/2010 0:00:00 17.32 6.9 1013 7.68EBHL 9/26/2010 1:00:00 17.19 6.88 1011 7.51EBHL 9/26/2010 2:00:00 16.95 6.86 1012 7.31EBHL 9/26/2010 3:00:00 16.63 6.84 1018 7.05EBHL 9/26/2010 4:00:00 16.5 6.83 1022 6.93EBHL 9/26/2010 5:00:00 16.34 6.82 1027 6.75EBHL 9/26/2010 6:00:00 16.15 6.81 1034 6.59EBHL 9/26/2010 7:00:00 15.92 6.81 1041 6.36EBHL 9/26/2010 8:00:00 15.91 6.83 1048 6.58EBHL 9/26/2010 9:00:00 16.2 6.87 1053 7.1EBHL 9/26/2010 10:00:00 16.23 6.93 1056 7.97EBHL 9/26/2010 11:00:00 16.28 6.98 1061 8.59EBHL 9/26/2010 12:00:00 17 7.09 1068 9.52EBHL 9/26/2010 13:00:00 17.48 7.15 1069 9.72EBHL 9/26/2010 14:00:00 17.3 7.15 1062 9.89EBHL 9/26/2010 15:00:00 17.37 7.15 1051 9.94EBHL 9/26/2010 16:00:00 17.5 7.1 1018 9.88EBHL 9/26/2010 17:00:00 17.52 7.03 999 9.62EBHL 9/26/2010 18:00:00 17.52 7 996 9.43EBHL 9/26/2010 19:00:00 17.16 6.97 998 9.34EBHL 9/26/2010 20:00:00 16.82 6.94 1000 8.93EBHL 9/26/2010 21:00:00 16.55 6.93 998 8.76EBHL 9/26/2010 22:00:00 16.26 6.92 1000 8.56EBHL 9/26/2010 23:00:00 16.03 6.91 999 8.35EBHL 9/27/2010 0:00:00 16.1 6.89 999 8.2EBHL 9/27/2010 1:00:00 16.24 6.88 999 8.05EBHL 9/27/2010 2:00:00 16.21 6.84 1002 7.77EBHL 9/27/2010 3:00:00 16.19 6.82 1008 7.52EBHL 9/27/2010 4:00:00 16.09 6.8 1014 7.26EBHL 9/27/2010 5:00:00 15.97 6.79 1017 7.07EBHL 9/27/2010 6:00:00 15.82 6.77 1022 6.95EBHL 9/27/2010 7:00:00 15.55 6.76 1032 6.55EBHL 9/27/2010 8:00:00 15.39 6.75 1034 6.5EBHL 9/27/2010 9:00:00 15.38 6.78 1036 6.72EBHL 9/27/2010 10:00:00 15.63 6.82 1035 7.4EBHL 9/27/2010 11:00:00 16.28 6.91 1036 8.4EBHL 9/27/2010 12:00:00 17.22 7.01 1034 9.26EBHL 9/27/2010 13:00:00 18.22 7.09 1027 9.8EBHL 9/27/2010 14:00:00 19.19 7.11 1014 10.23EBHL 9/27/2010 15:00:00 19.24 7.02 994 10.16

East Branch DuPage River Hidden Lake Page 67 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/27/2010 16:00:00 19.81 7.01 989 10.29EBHL 9/27/2010 17:00:00 19.97 7.02 1000 10.41EBHL 9/27/2010 18:00:00 19.32 7.02 1009 10.28EBHL 9/27/2010 19:00:00 18.49 7 1016 9.71EBHL 9/27/2010 20:00:00 17.77 6.95 1016 8.87EBHL 9/27/2010 21:00:00 17.38 6.92 1022 8.52EBHL 9/27/2010 22:00:00 17.11 6.91 1027 8.39EBHL 9/27/2010 23:00:00 16.9 6.9 1027 8.38EBHL 9/28/2010 0:00:00 16.75 6.9 1015 8.43EBHL 9/28/2010 1:00:00 16.48 6.85 1007 8.29EBHL 9/28/2010 2:00:00 16.24 6.82 995 8.05EBHL 9/28/2010 3:00:00 16.05 6.79 988 7.78EBHL 9/28/2010 4:00:00 15.81 6.75 988 7.53EBHL 9/28/2010 5:00:00 15.75 6.73 987 7.35EBHL 9/28/2010 6:00:00 15.52 6.72 991 7.14EBHL 9/28/2010 7:00:00 15.14 6.7 997 6.73EBHL 9/28/2010 8:00:00 15.16 6.71 1003 6.81EBHL 9/28/2010 9:00:00 15.5 6.76 1006 7.22EBHL 9/28/2010 10:00:00 16.34 6.84 1016 7.93EBHL 9/28/2010 11:00:00 17.56 6.97 1026 8.94EBHL 9/28/2010 12:00:00 18.58 7.06 1033 9.49EBHL 9/28/2010 13:00:00 19.24 7.11 1023 9.69EBHL 9/28/2010 14:00:00 20.06 7.13 1029 10.18EBHL 9/28/2010 15:00:00 20.83 7.09 1011 10.4EBHL 9/28/2010 16:00:00 21.29 7.05 993 10.61EBHL 9/28/2010 17:00:00 21.08 7.07 997 10.49EBHL 9/28/2010 18:00:00 20.32 7.07 1001 10.13EBHL 9/28/2010 19:00:00 19.58 7.06 1005 9.57EBHL 9/28/2010 20:00:00 18.91 7.03 1008 8.88EBHL 9/28/2010 21:00:00 18.4 7 1009 8.39EBHL 9/28/2010 22:00:00 18.24 7 1013 8.29EBHL 9/28/2010 23:00:00 18.28 7.01 1015 8.27EBHL 9/29/2010 0:00:00 18.2 7.02 1017 8.39EBHL 9/29/2010 1:00:00 17.84 7 1016 8.32EBHL 9/29/2010 2:00:00 17.57 6.97 1017 8.2EBHL 9/29/2010 3:00:00 17.27 6.93 1020 7.95EBHL 9/29/2010 4:00:00 16.99 6.89 1025 7.66EBHL 9/29/2010 5:00:00 16.9 6.86 1025 7.4EBHL 9/29/2010 6:00:00 16.87 6.85 1033 7.07EBHL 9/29/2010 7:00:00 16.52 6.84 1042 6.75EBHL 9/29/2010 8:00:00 16.22 6.83 1046 6.64EBHL 9/29/2010 9:00:00 16.36 6.86 1052 6.93EBHL 9/29/2010 10:00:00 17.1 6.94 1055 7.85EBHL 9/29/2010 11:00:00 18.18 7.07 1060 8.93

East Branch DuPage River Hidden Lake Page 68 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 9/29/2010 12:00:00 19.18 7.19 1064 9.59EBHL 9/29/2010 13:00:00 20.05 7.26 1055 9.97EBHL 9/29/2010 14:00:00 20.91 7.27 1047 10.45EBHL 9/29/2010 15:00:00 21.56 7.22 1029 10.61EBHL 9/29/2010 16:00:00 21.8 7.18 1022 10.72EBHL 9/29/2010 17:00:00 21.57 7.13 1017 10.47EBHL 9/29/2010 18:00:00 20.94 7.07 1016 9.94EBHL 9/29/2010 19:00:00 20.16 7.03 1025 9.18EBHL 9/29/2010 20:00:00 19.45 6.99 1029 8.39EBHL 9/29/2010 21:00:00 18.98 6.96 1030 7.99EBHL 9/29/2010 22:00:00 18.74 6.96 1029 7.84EBHL 9/29/2010 23:00:00 18.57 6.96 1032 7.81EBHL 9/30/2010 0:00:00 18.51 6.97 1033 7.93EBHL 9/30/2010 1:00:00 18.51 6.96 1042 7.9EBHL 9/30/2010 2:00:00 18.61 6.93 1035 7.83EBHL 9/30/2010 3:00:00 18.46 6.9 1031 7.69EBHL 9/30/2010 4:00:00 18.33 6.85 1032 7.38EBHL 9/30/2010 5:00:00 18.05 6.8 1033 7.19EBHL 9/30/2010 6:00:00 17.63 6.8 1040 6.95EBHL 9/30/2010 7:00:00 17.33 6.78 1041 6.67EBHL 9/30/2010 8:00:00 17.16 6.79 1045 6.56EBHL 9/30/2010 9:00:00 17.47 6.83 1051 6.91EBHL 9/30/2010 10:00:00 18.29 6.94 1059 8.04EBHL 9/30/2010 11:00:00 19.35 7.07 1073 9.16EBHL 9/30/2010 12:00:00 20.17 7.17 1083 9.8EBHL 9/30/2010 13:00:00 20.91 7.23 1071 10.17EBHL 9/30/2010 14:00:00 21.32 7.23 1057 10.5EBHL 9/30/2010 15:00:00 21.82 7.17 1025 10.67EBHL 9/30/2010 16:00:00 21.92 7.13 1007 10.76EBHL 9/30/2010 17:00:00 21.49 7.16 1010 10.97EBHL 9/30/2010 18:00:00 20.58 7.13 1015 10.08EBHL 9/30/2010 19:00:00 19.79 7.07 1017 9.28EBHL 9/30/2010 20:00:00 19.19 7.03 1021 8.79EBHL 9/30/2010 21:00:00 18.75 7.01 1025 8.13EBHL 9/30/2010 22:00:00 18.42 7.02 1031 7.94EBHL 9/30/2010 23:00:00 18.01 7.01 1035 7.84EBHL 10/1/2010 0:00:00 17.82 7.01 1032 7.94EBHL 10/1/2010 1:00:00 17.49 7.01 1027 7.99EBHL 10/1/2010 2:00:00 17.19 7.01 1025 8.05EBHL 10/1/2010 3:00:00 16.81 6.97 1033 7.86EBHL 10/1/2010 4:00:00 16.58 6.92 1034 7.66EBHL 10/1/2010 5:00:00 16.22 6.87 1033 7.4EBHL 10/1/2010 6:00:00 15.87 6.84 1035 7.19EBHL 10/1/2010 7:00:00 15.44 6.82 1043 6.98

East Branch DuPage River Hidden Lake Page 69 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationEBHL 10/1/2010 8:00:00 15.23 6.8 1046 6.87EBHL 10/1/2010 9:00:00 15.76 6.85 1052 7.32

East Branch DuPage River Hidden Lake Page 70 of 70

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LWBBR 5/13/2010 15:00:00 13.03 7.32 479 8.43WBBR 5/13/2010 16:00:00 13.23 7.53 480 8.39WBBR 5/13/2010 17:00:00 13.46 7.57 493 8.32WBBR 5/13/2010 18:00:00 13.47 7.58 503 8.22WBBR 5/13/2010 19:00:00 13.39 7.58 508 8.1WBBR 5/13/2010 20:00:00 13.43 7.57 512 7.94WBBR 5/13/2010 21:00:00 13.3 7.57 507 7.85WBBR 5/13/2010 22:00:00 13.29 7.57 505 7.74WBBR 5/13/2010 23:00:00 13.22 7.56 499 7.7WBBR 5/14/2010 0:00:00 13.22 7.56 504 7.65WBBR 5/14/2010 1:00:00 13.18 7.57 510 7.56WBBR 5/14/2010 2:00:00 13.13 7.57 511 7.2WBBR 5/14/2010 3:00:00 13.07 7.49 515 6.37WBBR 5/14/2010 4:00:00 13.01 7.54 520 5.85WBBR 5/14/2010 5:00:00 12.95 7.54 521 6.37WBBR 5/14/2010 6:00:00 12.89 7.54 525 7.42WBBR 5/14/2010 7:00:00 12.87 7.47 535 7.07WBBR 5/14/2010 8:00:00 12.96 7.45 546 4.46WBBR 5/14/2010 9:00:00 13.17 7.42 558 6.21WBBR 5/14/2010 10:00:00 13.48 7.43 569 5.95WBBR 5/14/2010 11:00:00 13.8 7.4 584 7.55WBBR 5/14/2010 12:00:00 14.14 7.39 599 7.64WBBR 5/14/2010 13:00:00 14.47 7.37 606 5.64WBBR 5/14/2010 14:00:00 14.82 7.44 623 4.45WBBR 5/14/2010 15:00:00 14.99 7.52 632 8.14WBBR 5/14/2010 16:00:00 15.16 7.46 643 8.27WBBR 5/14/2010 17:00:00 15.3 7.47 658 7.04WBBR 5/14/2010 18:00:00 15.24 7.46 664 7.37WBBR 5/14/2010 19:00:00 15.21 7.41 674 7.21WBBR 5/14/2010 20:00:00 15.15 7.39 682 4.83WBBR 5/14/2010 21:00:00 15.06 7.4 686 5.01WBBR 5/14/2010 22:00:00 15.09 7.54 707 6.22WBBR 5/14/2010 23:00:00 14.98 7.48 708 7.28WBBR 5/15/2010 0:00:00 14.86 7.48 707 7.31WBBR 5/15/2010 1:00:00 14.72 7.45 718 7.13WBBR 5/15/2010 2:00:00 14.56 7.45 725 7.12WBBR 5/15/2010 3:00:00 14.42 7.46 725 7.17WBBR 5/15/2010 4:00:00 14.27 7.46 726 6.87WBBR 5/15/2010 5:00:00 14.06 7.47 735 7.17WBBR 5/15/2010 6:00:00 13.94 7.41 737 6.76WBBR 5/15/2010 7:00:00 13.88 7.43 740 6.16WBBR 5/15/2010 8:00:00 13.96 7.4 744 5.67WBBR 5/15/2010 9:00:00 14.09 7.44 747 7.62WBBR 5/15/2010 10:00:00 14.3 7.44 751 7.57

Station

West Branch DuPage River Butterfield Road Crossing Page 1 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 5/15/2010 11:00:00 14.51 7.44 751 6.91WBBR 5/15/2010 12:00:00 14.68 7.42 760 5.68WBBR 5/15/2010 13:00:00 14.82 7.41 755 5.27WBBR 5/15/2010 14:00:00 14.93 7.44 756 5.09WBBR 5/15/2010 15:00:00 15.06 7.54 760 6.24WBBR 5/15/2010 16:00:00 15.16 7.58 768 7.56WBBR 5/15/2010 17:00:00 15.17 7.6 767 7.52WBBR 5/15/2010 18:00:00 15.14 7.67 760 7.2WBBR 5/15/2010 19:00:00 15.07 7.64 774 6.78WBBR 5/15/2010 20:00:00 14.92 7.61 776 7.7WBBR 5/15/2010 21:00:00 14.73 7.51 779 7WBBR 5/15/2010 22:00:00 14.55 7.5 787 5.22WBBR 5/15/2010 23:00:00 14.36 7.44 785 5.31WBBR 5/16/2010 0:00:00 14.15 7.53 794 3.46WBBR 5/16/2010 1:00:00 13.94 7.45 788 7.51WBBR 5/16/2010 2:00:00 13.69 7.5 798 2.84WBBR 5/16/2010 3:00:00 13.47 7.53 800 1.85WBBR 5/16/2010 4:00:00 13.25 7.52 801 1.13WBBR 5/16/2010 5:00:00 13.13 7.58 791 1.48WBBR 5/16/2010 6:00:00 12.99 7.59 799 1.35WBBR 5/16/2010 7:00:00 12.97 7.61 799 3.28WBBR 5/16/2010 8:00:00 13.12 7.63 801 4.95WBBR 5/16/2010 9:00:00 13.43 7.64 804 6.07WBBR 5/16/2010 10:00:00 13.89 7.65 808 5.17WBBR 5/16/2010 11:00:00 14.53 7.67 815 4.58WBBR 5/16/2010 12:00:00 15.26 7.7 818 3.83WBBR 5/16/2010 13:00:00 16.03 7.7 826 3.93WBBR 5/16/2010 14:00:00 16.68 7.72 832 5.5WBBR 5/16/2010 15:00:00 17.15 7.72 840 4.73WBBR 5/16/2010 16:00:00 17.54 7.75 842 4.58WBBR 5/16/2010 17:00:00 17.48 7.76 844 5.09WBBR 5/16/2010 18:00:00 17.33 7.78 847 1.45WBBR 5/16/2010 19:00:00 17.09 7.77 851 4.94WBBR 5/16/2010 20:00:00 16.81 7.76 856 4.56WBBR 5/16/2010 21:00:00 16.44 7.73 857 2.79WBBR 5/16/2010 22:00:00 16.13 7.71 863 3.55WBBR 5/16/2010 23:00:00 15.82 7.68 867 4.01WBBR 5/17/2010 0:00:00 15.55 7.64 868 1.54WBBR 5/17/2010 1:00:00 15.35 7.62 878 1.77WBBR 5/17/2010 2:00:00 15.13 7.59 882 0.41WBBR 5/17/2010 3:00:00 14.97 7.57 883 0.46WBBR 5/17/2010 4:00:00 14.77 7.53 888 0.35WBBR 5/17/2010 5:00:00 14.58 7.52 891 0.37WBBR 5/17/2010 6:00:00 14.42 7.51 891 0.41

West Branch DuPage River Butterfield Road Crossing Page 2 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 5/17/2010 7:00:00 14.31 7.52 891 0.5WBBR 5/17/2010 8:00:00 14.22 7.49 889 0.4WBBR 5/17/2010 9:00:00 14.23 7.47 889 0.25WBBR 5/17/2010 10:00:00 14.29 7.47 890 0.34WBBR 5/17/2010 11:00:00 14.42 7.45 897 0.88WBBR 5/17/2010 12:00:00 14.59 7.45 900 1.16WBBR 5/17/2010 13:00:00 14.7 7.44 900 0.5WBBR 5/17/2010 14:00:00 14.82 7.46 902 1.11WBBR 5/17/2010 15:00:00 14.89 7.45 903 0.57WBBR 5/17/2010 16:00:00 14.91 7.65 901 3.69WBBR 5/17/2010 17:00:00 14.89 7.64 901 2.79WBBR 5/17/2010 18:00:00 14.86 7.65 903 2.86WBBR 5/17/2010 19:00:00 14.8 7.66 907 2.25WBBR 5/17/2010 20:00:00 14.66 7.64 907 2.32WBBR 5/17/2010 21:00:00 14.52 7.62 910 2.6WBBR 5/17/2010 22:00:00 14.38 7.6 912 2.45WBBR 5/17/2010 23:00:00 14.25 7.6 913 2.9WBBR 5/18/2010 0:00:00 14.16 7.61 917 2.3WBBR 5/18/2010 1:00:00 14.06 7.59 916 2.13WBBR 5/18/2010 2:00:00 13.94 7.58 922 2.23WBBR 5/18/2010 3:00:00 13.8 7.59 921 2.11WBBR 5/18/2010 4:00:00 13.65 7.59 926 1.8WBBR 5/18/2010 5:00:00 13.51 7.58 923 1.56WBBR 5/18/2010 6:00:00 13.39 7.6 920 2.11WBBR 5/18/2010 7:00:00 13.33 7.58 921 1.9WBBR 5/18/2010 8:00:00 13.39 7.59 922 1.64WBBR 5/18/2010 9:00:00 13.61 7.61 920 1.9WBBR 5/18/2010 10:00:00 14.02 7.62 924 2.88WBBR 5/18/2010 11:00:00 14.62 7.63 933 8.11WBBR 5/18/2010 12:00:00 14.97 7.66 937 8.59WBBR 5/18/2010 13:00:00 15.33 7.68 942 8.65WBBR 5/18/2010 14:00:00 15.52 7.65 943 8.54WBBR 5/18/2010 15:00:00 15.59 7.68 944 8.43WBBR 5/18/2010 16:00:00 15.7 7.69 947 8.35WBBR 5/18/2010 17:00:00 15.7 7.68 951 8.64WBBR 5/18/2010 18:00:00 15.58 7.7 951 8.64WBBR 5/18/2010 19:00:00 15.46 7.7 953 8.52WBBR 5/18/2010 20:00:00 15.23 7.66 948 8.16WBBR 5/18/2010 21:00:00 15 7.59 945 5.68WBBR 5/18/2010 22:00:00 14.82 7.57 946 5.77WBBR 5/18/2010 23:00:00 14.62 7.56 950 7.01WBBR 5/19/2010 0:00:00 14.39 7.55 951 6.9WBBR 5/19/2010 1:00:00 14.15 7.53 953 6.25WBBR 5/19/2010 2:00:00 13.92 7.53 956 6.96

West Branch DuPage River Butterfield Road Crossing Page 3 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 5/19/2010 3:00:00 13.7 7.55 959 6.76WBBR 5/19/2010 4:00:00 13.49 7.52 962 5.6WBBR 5/19/2010 5:00:00 13.26 7.5 962 6.72WBBR 5/19/2010 6:00:00 13.07 7.5 963 6.8WBBR 5/19/2010 7:00:00 13.01 7.49 962 5.19WBBR 5/19/2010 8:00:00 13.17 7.5 962 5.3WBBR 5/19/2010 9:00:00 13.59 7.52 964 4.46WBBR 5/19/2010 10:00:00 14.26 7.53 964 3.97WBBR 5/19/2010 11:00:00 15.17 7.52 973 4.48WBBR 5/19/2010 12:00:00 16.2 7.53 979 4.5WBBR 5/19/2010 13:00:00 17.26 7.55 982 2.55WBBR 5/19/2010 14:00:00 18.22 7.54 984 4.37WBBR 5/19/2010 15:00:00 18.93 7.53 979 1.65WBBR 5/19/2010 16:00:00 19.43 7.53 985 3.4WBBR 5/19/2010 17:00:00 19.57 7.55 984 3.42WBBR 5/19/2010 18:00:00 19.46 7.53 981 3.02WBBR 5/19/2010 19:00:00 19.18 7.52 979 2.5WBBR 5/19/2010 20:00:00 18.85 7.54 977 3.5WBBR 5/19/2010 21:00:00 18.49 7.53 976 0.53WBBR 5/19/2010 22:00:00 18.12 7.54 975 1.07WBBR 5/19/2010 23:00:00 17.77 7.53 974 0.53WBBR 5/20/2010 0:00:00 17.43 7.56 973 2.31WBBR 5/20/2010 1:00:00 17.07 7.53 975 2.27WBBR 5/20/2010 2:00:00 16.7 7.51 978 1.04WBBR 5/20/2010 3:00:00 16.34 7.51 981 1.56WBBR 5/20/2010 4:00:00 15.98 7.53 983 1.74WBBR 5/20/2010 5:00:00 15.65 7.53 985 1.47WBBR 5/20/2010 6:00:00 15.36 7.52 985 1.06WBBR 5/20/2010 7:00:00 15.19 7.49 984 1.48WBBR 5/20/2010 8:00:00 15.26 7.49 985 1.06WBBR 5/20/2010 9:00:00 15.55 7.52 985 1.61WBBR 5/20/2010 10:00:00 16.09 7.55 989 1.27WBBR 5/20/2010 11:00:00 16.71 7.55 991 0.87WBBR 5/20/2010 12:00:00 17.51 7.56 996 1.58WBBR 5/20/2010 13:00:00 18.09 7.59 1003 2.78WBBR 5/20/2010 14:00:00 18.65 7.58 1005 3.09WBBR 5/20/2010 15:00:00 18.96 7.93 1011 9.54WBBR 5/20/2010 16:00:00 19.08 7.95 1014 9.56WBBR 5/20/2010 17:00:00 19.07 7.96 1008 9.37WBBR 5/20/2010 18:00:00 18.89 7.95 1005 9.03WBBR 5/20/2010 19:00:00 18.65 7.94 1002 8.77WBBR 5/20/2010 20:00:00 18.36 7.92 1003 8.43WBBR 5/20/2010 21:00:00 18.08 7.89 1002 8.08WBBR 5/20/2010 22:00:00 17.79 7.85 1001 7.77

West Branch DuPage River Butterfield Road Crossing Page 4 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 5/20/2010 23:00:00 17.56 7.84 1001 7.6WBBR 5/21/2010 0:00:00 17.34 7.84 999 7.49WBBR 5/21/2010 1:00:00 17.12 7.82 994 7.41WBBR 5/21/2010 2:00:00 16.9 7.81 991 7.29WBBR 5/21/2010 3:00:00 16.69 7.79 987 7.2WBBR 5/21/2010 4:00:00 16.53 7.78 988 7.09WBBR 5/21/2010 5:00:00 16.31 7.76 985 7.01WBBR 5/21/2010 6:00:00 16.14 7.75 988 6.91WBBR 5/21/2010 7:00:00 16.03 7.74 998 6.94WBBR 5/21/2010 8:00:00 15.98 7.74 1004 6.94WBBR 5/21/2010 9:00:00 16.02 7.74 1003 6.94WBBR 5/21/2010 10:00:00 16.16 7.74 1002 7.07WBBR 5/21/2010 11:00:00 16.36 7.74 1008 7.26WBBR 5/21/2010 12:00:00 16.59 7.75 1014 7.46WBBR 5/21/2010 13:00:00 16.89 7.75 1020 7.64WBBR 5/21/2010 14:00:00 17.24 7.76 1020 7.86WBBR 5/21/2010 15:00:00 17.64 7.78 1020 8.03WBBR 5/21/2010 16:00:00 17.88 7.8 1015 8.2WBBR 5/21/2010 17:00:00 18.04 7.81 1011 8.18WBBR 5/21/2010 18:00:00 18.1 7.81 1005 8.04WBBR 5/21/2010 19:00:00 17.98 7.81 1002 7.98WBBR 5/21/2010 20:00:00 17.78 7.81 998 7.88WBBR 5/21/2010 21:00:00 17.58 7.81 993 7.77WBBR 5/21/2010 22:00:00 17.4 7.79 986 7.63WBBR 5/21/2010 23:00:00 17.24 7.77 986 7.46WBBR 5/22/2010 0:00:00 17.11 7.76 983 7.31WBBR 5/22/2010 1:00:00 16.97 7.73 978 7.16WBBR 5/22/2010 2:00:00 16.88 7.72 974 7.05WBBR 5/22/2010 3:00:00 16.78 7.71 972 6.96WBBR 5/22/2010 4:00:00 16.74 7.71 979 6.95WBBR 5/22/2010 5:00:00 16.69 7.7 985 6.93WBBR 5/22/2010 6:00:00 16.65 7.69 986 6.91WBBR 5/22/2010 7:00:00 16.66 7.67 983 6.9WBBR 5/22/2010 8:00:00 16.74 7.64 968 6.93WBBR 5/22/2010 9:00:00 16.93 7.61 953 7WBBR 5/22/2010 10:00:00 17.29 7.61 935 7.21WBBR 5/22/2010 11:00:00 17.74 7.6 924 7.42WBBR 5/22/2010 12:00:00 18.43 7.61 915 7.67WBBR 5/22/2010 13:00:00 19.37 7.63 924 7.99WBBR 5/22/2010 14:00:00 19.99 7.69 929 8.14WBBR 5/22/2010 15:00:00 20.74 7.76 939 8.39WBBR 5/22/2010 16:00:00 21.24 7.77 956 8.42WBBR 5/22/2010 17:00:00 21.3 7.79 949 8.6WBBR 5/22/2010 18:00:00 21.35 7.8 967 8.47

West Branch DuPage River Butterfield Road Crossing Page 5 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 5/22/2010 19:00:00 21.16 7.81 966 8.36WBBR 5/22/2010 20:00:00 20.88 7.8 968 8.05WBBR 5/22/2010 21:00:00 20.56 7.79 968 7.71WBBR 5/22/2010 22:00:00 20.2 7.77 968 7.4WBBR 5/22/2010 23:00:00 19.88 7.76 968 7.17WBBR 5/23/2010 0:00:00 19.62 7.74 966 7.05WBBR 5/23/2010 1:00:00 19.42 7.72 967 6.91WBBR 5/23/2010 2:00:00 19.18 7.68 965 6.84WBBR 5/23/2010 3:00:00 18.97 7.62 965 6.78WBBR 5/23/2010 4:00:00 18.79 7.59 965 6.66WBBR 5/23/2010 5:00:00 18.61 7.57 967 6.59WBBR 5/23/2010 6:00:00 18.46 7.55 970 6.56WBBR 5/23/2010 7:00:00 18.43 7.53 972 6.63WBBR 5/23/2010 8:00:00 18.58 7.52 976 6.77WBBR 5/23/2010 9:00:00 18.97 7.55 976 7.06WBBR 5/23/2010 10:00:00 19.63 7.57 981 7.51WBBR 5/23/2010 11:00:00 20.55 7.62 986 7.96WBBR 5/23/2010 12:00:00 21.6 7.71 990 8.46WBBR 5/23/2010 13:00:00 22.7 7.66 995 8.85WBBR 5/23/2010 14:00:00 23.61 7.7 1000 9.13WBBR 5/23/2010 15:00:00 24.23 7.72 1008 9.15WBBR 5/23/2010 16:00:00 24.59 7.82 1011 9.17WBBR 5/23/2010 17:00:00 24.86 7.78 1011 9.08WBBR 5/23/2010 18:00:00 24.87 7.79 1004 8.99WBBR 5/23/2010 19:00:00 24.72 7.82 1002 8.69WBBR 5/23/2010 20:00:00 24.43 7.81 1001 8.17WBBR 5/23/2010 21:00:00 24.1 7.8 1000 7.6WBBR 5/23/2010 22:00:00 23.78 7.75 999 7.09WBBR 5/23/2010 23:00:00 23.48 7.69 1000 6.64WBBR 5/24/2010 0:00:00 23.19 7.65 999 6.32WBBR 5/24/2010 1:00:00 22.9 7.62 1000 6.09WBBR 5/24/2010 2:00:00 22.61 7.61 1000 5.94WBBR 5/24/2010 3:00:00 22.34 7.55 997 5.82WBBR 5/24/2010 4:00:00 22.08 7.49 995 5.7WBBR 5/24/2010 5:00:00 21.84 7.46 994 5.61WBBR 5/24/2010 6:00:00 21.64 7.44 992 5.54WBBR 5/24/2010 7:00:00 21.58 7.43 993 5.61WBBR 5/24/2010 8:00:00 21.7 7.43 995 5.81WBBR 5/24/2010 9:00:00 22.04 7.49 995 6.21WBBR 5/24/2010 10:00:00 22.6 7.5 1002 6.75WBBR 5/24/2010 11:00:00 23.37 7.54 1011 7.34WBBR 5/24/2010 12:00:00 24.3 7.62 1019 7.91WBBR 5/24/2010 13:00:00 25.31 7.67 1018 8.47WBBR 5/24/2010 14:00:00 26.11 7.71 1023 8.84

West Branch DuPage River Butterfield Road Crossing Page 6 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 5/24/2010 15:00:00 26.72 7.79 1028 9.02WBBR 5/24/2010 16:00:00 27.12 7.84 1027 9.32WBBR 5/24/2010 17:00:00 27.24 7.89 1026 9.32WBBR 5/24/2010 18:00:00 27.23 7.9 1021 9.22WBBR 5/24/2010 19:00:00 27.04 7.88 1022 8.75WBBR 5/24/2010 20:00:00 26.66 7.78 1030 8.05WBBR 5/24/2010 21:00:00 26.22 7.73 1034 7.38WBBR 5/24/2010 22:00:00 25.78 7.67 1035 6.73WBBR 5/24/2010 23:00:00 25.38 7.69 1036 6.23WBBR 5/25/2010 0:00:00 24.95 7.64 1035 5.89WBBR 5/25/2010 1:00:00 24.53 7.6 1034 5.66WBBR 5/25/2010 2:00:00 24.07 7.52 1029 5.49WBBR 5/25/2010 3:00:00 23.69 7.53 1024 5.4WBBR 5/25/2010 4:00:00 23.33 7.53 1019 5.35WBBR 5/25/2010 5:00:00 22.99 7.52 1016 5.22WBBR 5/25/2010 6:00:00 22.71 7.49 1014 5.15WBBR 5/25/2010 7:00:00 22.56 7.44 1012 5.22WBBR 5/25/2010 8:00:00 22.58 7.44 1014 5.47WBBR 5/25/2010 9:00:00 22.82 7.45 1017 5.89WBBR 5/25/2010 10:00:00 23.29 7.48 1022 6.48WBBR 5/25/2010 11:00:00 24.01 7.57 1025 7.19WBBR 5/25/2010 12:00:00 24.74 7.59 1026 8.04WBBR 5/25/2010 13:00:00 25.63 7.68 1026 8.94WBBR 5/25/2010 14:00:00 26.37 7.77 1030 9.55WBBR 5/25/2010 15:00:00 26.94 7.79 1034 9.92WBBR 5/25/2010 16:00:00 27.4 7.81 1037 10.1WBBR 5/25/2010 17:00:00 27.51 7.84 1039 9.93WBBR 5/25/2010 18:00:00 27.27 7.8 1045 9.2WBBR 5/25/2010 19:00:00 27.04 7.79 1051 8.87WBBR 5/25/2010 20:00:00 26.61 7.75 1056 8.09WBBR 5/25/2010 21:00:00 26.18 7.7 1058 7.39WBBR 5/25/2010 22:00:00 25.68 7.66 1056 6.7WBBR 5/25/2010 23:00:00 25.15 7.61 1055 6.15WBBR 5/26/2010 0:00:00 24.65 7.56 1055 5.73WBBR 5/26/2010 1:00:00 24.23 7.53 1056 5.44WBBR 5/26/2010 2:00:00 23.82 7.5 1055 5.26WBBR 5/26/2010 3:00:00 23.41 7.48 1050 5.15WBBR 5/26/2010 4:00:00 23.01 7.47 1045 5.06WBBR 5/26/2010 5:00:00 22.64 7.44 1037 4.96WBBR 5/26/2010 6:00:00 22.35 7.41 1029 4.84WBBR 5/26/2010 7:00:00 22.18 7.4 1029 4.92WBBR 5/26/2010 8:00:00 22.23 7.4 1032 5.2WBBR 5/26/2010 9:00:00 22.48 7.41 1037 5.67WBBR 5/26/2010 10:00:00 22.92 7.43 1034 6.31

West Branch DuPage River Butterfield Road Crossing Page 7 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 5/26/2010 11:00:00 23.64 7.48 1034 7.18WBBR 5/26/2010 12:00:00 24.47 7.54 1037 8.11WBBR 5/26/2010 13:00:00 25.17 7.61 1042 8.86WBBR 5/26/2010 14:00:00 25.96 7.73 1043 10.01WBBR 5/26/2010 15:00:00 26.01 7.73 1031 9.32WBBR 5/26/2010 16:00:00 25.71 7.71 1024 8.73WBBR 5/26/2010 17:00:00 25.56 7.59 1007 7.2WBBR 5/26/2010 18:00:00 25.55 7.58 1009 7.2WBBR 5/26/2010 19:00:00 25.43 7.6 1025 7.4WBBR 5/26/2010 20:00:00 25.08 7.6 1012 6.99WBBR 5/26/2010 21:00:00 24.67 7.59 1012 6.64WBBR 5/26/2010 22:00:00 24.05 7.47 1006 6.08WBBR 5/26/2010 23:00:00 23.25 7.4 959 5.41WBBR 5/27/2010 0:00:00 22.69 7.33 921 5.15WBBR 5/27/2010 1:00:00 22.18 7.3 844 4.99WBBR 5/27/2010 2:00:00 21.82 7.27 783 4.93WBBR 5/27/2010 3:00:00 21.6 7.23 743 4.83WBBR 5/27/2010 4:00:00 21.56 7.19 723 4.69WBBR 5/27/2010 5:00:00 21.53 7.18 720 4.64WBBR 5/27/2010 6:00:00 21.38 7.18 704 4.59WBBR 5/27/2010 7:00:00 21.28 7.17 684 4.62WBBR 5/27/2010 8:00:00 21.25 7.18 688 4.75WBBR 5/27/2010 9:00:00 21.29 7.2 719 4.97WBBR 5/27/2010 10:00:00 21.61 7.2 749 5.19WBBR 5/27/2010 11:00:00 21.91 7.26 782 5.55WBBR 5/27/2010 12:00:00 22.33 7.29 810 5.88WBBR 5/27/2010 13:00:00 22.87 7.34 835 6.26WBBR 5/27/2010 14:00:00 23.43 7.38 856 6.55WBBR 5/27/2010 15:00:00 23.89 7.43 872 6.85WBBR 5/27/2010 16:00:00 24.13 7.45 876 6.98WBBR 5/27/2010 17:00:00 24.12 7.47 878 6.98WBBR 5/27/2010 18:00:00 23.89 7.45 884 6.85WBBR 5/27/2010 19:00:00 23.59 7.44 894 6.47WBBR 5/27/2010 20:00:00 23.19 7.41 894 6.33WBBR 5/27/2010 21:00:00 22.79 7.38 893 6.17WBBR 5/27/2010 22:00:00 22.41 7.37 893 6.01WBBR 5/27/2010 23:00:00 22.02 7.37 891 5.98WBBR 5/28/2010 0:00:00 21.65 7.36 891 5.88WBBR 5/28/2010 1:00:00 21.29 7.34 890 5.82WBBR 5/28/2010 2:00:00 20.94 7.32 889 5.84WBBR 5/28/2010 3:00:00 20.63 7.3 885 5.81WBBR 5/28/2010 4:00:00 20.35 7.29 884 5.79WBBR 5/28/2010 5:00:00 20.06 7.29 886 5.72WBBR 5/28/2010 6:00:00 19.78 7.28 887 5.75

West Branch DuPage River Butterfield Road Crossing Page 8 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 5/28/2010 7:00:00 19.6 7.27 888 5.79WBBR 5/28/2010 8:00:00 19.66 7.27 889 5.98WBBR 5/28/2010 9:00:00 19.93 7.28 890 6.17WBBR 5/28/2010 10:00:00 20.43 7.31 893 6.5WBBR 5/28/2010 11:00:00 21.15 7.36 897 6.96WBBR 5/28/2010 12:00:00 22.02 7.42 901 7.47WBBR 5/28/2010 13:00:00 22.86 7.48 907 7.93WBBR 5/28/2010 14:00:00 23.6 7.53 912 8.3WBBR 5/28/2010 15:00:00 24.13 7.58 918 8.48WBBR 5/28/2010 16:00:00 24.52 7.61 921 8.63WBBR 5/28/2010 17:00:00 24.67 7.63 922 8.57WBBR 5/28/2010 18:00:00 24.59 7.63 923 8.37WBBR 5/28/2010 19:00:00 24.32 7.6 927 7.83WBBR 5/28/2010 20:00:00 23.93 7.56 925 7.39WBBR 5/28/2010 21:00:00 23.49 7.52 922 6.93WBBR 5/28/2010 22:00:00 23.08 7.49 922 6.54WBBR 5/28/2010 23:00:00 22.69 7.46 922 6.25WBBR 5/29/2010 0:00:00 22.31 7.43 920 6.02WBBR 5/29/2010 1:00:00 21.92 7.41 919 5.88WBBR 5/29/2010 2:00:00 21.56 7.39 921 5.73WBBR 5/29/2010 3:00:00 21.24 7.37 923 5.66WBBR 5/29/2010 4:00:00 20.93 7.36 924 5.64WBBR 5/29/2010 5:00:00 20.65 7.35 926 5.55WBBR 5/29/2010 6:00:00 20.45 7.33 927 5.53WBBR 5/29/2010 7:00:00 20.36 7.33 929 5.57WBBR 5/29/2010 8:00:00 20.5 7.32 931 5.66WBBR 5/29/2010 9:00:00 20.88 7.33 933 5.94WBBR 5/29/2010 10:00:00 21.51 7.37 935 6.48WBBR 5/29/2010 11:00:00 22.33 7.45 933 7.3WBBR 5/29/2010 12:00:00 23.3 7.52 938 8.03WBBR 5/29/2010 13:00:00 24.31 7.59 945 8.64WBBR 5/29/2010 14:00:00 25.17 7.65 949 9.1WBBR 5/29/2010 15:00:00 25.94 7.71 955 9.39WBBR 5/29/2010 16:00:00 26.3 7.72 962 9.22WBBR 5/29/2010 17:00:00 26.43 7.71 966 8.98WBBR 5/29/2010 18:00:00 26.4 7.7 966 8.81WBBR 5/29/2010 19:00:00 26.07 7.69 968 8.38WBBR 5/29/2010 20:00:00 25.6 7.65 968 7.85WBBR 5/29/2010 21:00:00 25.13 7.6 967 7.2WBBR 5/29/2010 22:00:00 24.64 7.55 966 6.54WBBR 5/29/2010 23:00:00 24.15 7.5 966 5.98WBBR 5/30/2010 0:00:00 23.73 7.47 965 5.66WBBR 5/30/2010 1:00:00 23.36 7.44 964 5.38WBBR 5/30/2010 2:00:00 22.99 7.43 964 5.26

West Branch DuPage River Butterfield Road Crossing Page 9 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 5/30/2010 3:00:00 22.62 7.41 963 5.18WBBR 5/30/2010 4:00:00 22.25 7.4 963 5.11WBBR 5/30/2010 5:00:00 21.9 7.38 962 5.03WBBR 5/30/2010 6:00:00 21.61 7.35 964 4.97WBBR 5/30/2010 7:00:00 21.45 7.34 965 5.09WBBR 5/30/2010 8:00:00 21.49 7.34 966 5.28WBBR 5/30/2010 9:00:00 21.82 7.35 969 5.6WBBR 5/30/2010 10:00:00 22.36 7.39 970 6.26WBBR 5/30/2010 11:00:00 23.08 7.45 974 7.02WBBR 5/30/2010 12:00:00 23.99 7.54 978 7.98WBBR 5/30/2010 13:00:00 25.02 7.63 981 8.85WBBR 5/30/2010 14:00:00 25.95 7.69 985 9.38WBBR 5/30/2010 15:00:00 26.63 7.73 992 9.46WBBR 5/30/2010 16:00:00 27.02 7.77 997 9.58WBBR 5/30/2010 17:00:00 27.2 7.77 1003 9.36WBBR 5/30/2010 18:00:00 27.28 7.74 1008 8.76WBBR 5/30/2010 19:00:00 27.23 7.69 1011 8.03WBBR 5/30/2010 20:00:00 27.04 7.7 1010 8.12WBBR 5/30/2010 21:00:00 26.63 7.65 1011 7.29WBBR 5/30/2010 22:00:00 26.23 7.58 1013 6.56WBBR 5/30/2010 23:00:00 25.77 7.53 1013 5.78WBBR 5/31/2010 0:00:00 25.31 7.48 1013 5.21WBBR 5/31/2010 1:00:00 24.88 7.45 1013 4.86WBBR 5/31/2010 2:00:00 24.52 7.42 1013 4.71WBBR 5/31/2010 3:00:00 24.16 7.41 1011 4.58WBBR 5/31/2010 4:00:00 23.81 7.39 1009 4.53WBBR 5/31/2010 5:00:00 23.51 7.39 1006 4.46WBBR 5/31/2010 6:00:00 23.28 7.38 1003 4.49WBBR 5/31/2010 7:00:00 23.24 7.37 1000 4.48WBBR 5/31/2010 8:00:00 23.26 7.37 996 4.67WBBR 5/31/2010 9:00:00 23.41 7.38 997 4.94WBBR 5/31/2010 10:00:00 23.64 7.43 999 5.66WBBR 5/31/2010 11:00:00 23.53 7.47 994 6.27WBBR 5/31/2010 12:00:00 23.59 7.52 985 7.03WBBR 5/31/2010 13:00:00 23.25 7.51 948 6.67WBBR 5/31/2010 14:00:00 23.02 7.46 935 5.99WBBR 5/31/2010 15:00:00 22.98 7.34 862 5.2WBBR 5/31/2010 16:00:00 22.94 7.32 874 5.4WBBR 5/31/2010 17:00:00 22.94 7.32 851 5.82WBBR 5/31/2010 18:00:00 22.75 7.31 858 5.82WBBR 5/31/2010 19:00:00 22.57 7.29 844 5.59WBBR 5/31/2010 20:00:00 22.36 7.26 806 5.44WBBR 5/31/2010 21:00:00 22.14 7.24 781 5.17WBBR 5/31/2010 22:00:00 21.91 7.21 759 4.9

West Branch DuPage River Butterfield Road Crossing Page 10 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 5/31/2010 23:00:00 21.72 7.2 754 4.88WBBR 6/1/2010 0:00:00 21.53 7.21 774 4.87WBBR 6/1/2010 1:00:00 21.32 7.22 832 4.91WBBR 6/1/2010 2:00:00 21.13 7.22 861 4.88WBBR 6/1/2010 3:00:00 20.97 7.21 879 4.85WBBR 6/1/2010 4:00:00 20.79 7.21 883 4.86WBBR 6/1/2010 5:00:00 20.63 7.21 894 4.89WBBR 6/1/2010 6:00:00 20.52 7.21 901 4.97WBBR 6/1/2010 7:00:00 20.5 7.21 901 5.02WBBR 6/1/2010 8:00:00 20.61 7.22 905 5.15WBBR 6/1/2010 9:00:00 20.83 7.23 901 5.31WBBR 6/1/2010 10:00:00 21.33 7.25 900 5.67WBBR 6/1/2010 11:00:00 21.98 7.3 898 6.04WBBR 6/1/2010 12:00:00 22.83 7.34 902 6.63WBBR 6/1/2010 13:00:00 23.7 7.39 909 7.15WBBR 6/1/2010 14:00:00 24.39 7.44 916 7.63WBBR 6/1/2010 15:00:00 24.94 7.49 921 8.04WBBR 6/1/2010 16:00:00 25.42 7.51 926 8.1WBBR 6/1/2010 17:00:00 25.82 7.52 929 8.18WBBR 6/1/2010 18:00:00 25.84 7.53 932 8.05WBBR 6/1/2010 19:00:00 25.63 7.53 932 7.64WBBR 6/1/2010 20:00:00 25.32 7.5 930 7.02WBBR 6/1/2010 21:00:00 25.04 7.46 929 6.45WBBR 6/1/2010 22:00:00 24.74 7.43 929 6WBBR 6/1/2010 23:00:00 24.47 7.41 931 5.58WBBR 6/2/2010 0:00:00 24.2 7.39 932 5.3WBBR 6/2/2010 1:00:00 23.88 7.38 932 5.28WBBR 6/2/2010 2:00:00 23.54 7.36 926 5.22WBBR 6/2/2010 3:00:00 23.11 7.36 913 5.35WBBR 6/2/2010 4:00:00 22.61 7.37 882 5.68WBBR 6/2/2010 5:00:00 22.15 7.35 836 5.74WBBR 6/2/2010 6:00:00 21.6 7.3 828 5.78WBBR 6/2/2010 7:00:00 20.71 7.23 792 5.78WBBR 6/2/2010 8:00:00 20.64 7.18 633 5.88WBBR 6/2/2010 9:00:00 21.2 7.17 602 5.78WBBR 6/2/2010 10:00:00 21.56 7.17 616 5.7WBBR 6/2/2010 11:00:00 21.66 7.15 600 5.68WBBR 6/2/2010 12:00:00 21.59 7.14 567 5.67WBBR 6/2/2010 13:00:00 21.61 7.13 547 5.71WBBR 6/2/2010 14:00:00 21.78 7.15 549 5.76WBBR 6/2/2010 15:00:00 22.14 7.17 569 5.83WBBR 6/2/2010 16:00:00 22.44 7.19 580 5.87WBBR 6/2/2010 17:00:00 22.73 7.23 608 5.91WBBR 6/2/2010 18:00:00 22.77 7.24 618 5.87

West Branch DuPage River Butterfield Road Crossing Page 11 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/2/2010 19:00:00 22.61 7.24 615 5.83WBBR 6/2/2010 20:00:00 22.43 7.23 614 5.72WBBR 6/2/2010 21:00:00 22.22 7.23 632 5.72WBBR 6/2/2010 22:00:00 21.99 7.23 653 5.66WBBR 6/2/2010 23:00:00 21.74 7.23 673 5.58WBBR 6/3/2010 0:00:00 21.51 7.24 682 5.55WBBR 6/3/2010 1:00:00 21.36 7.23 694 5.46WBBR 6/3/2010 2:00:00 21.06 7.21 705 5.37WBBR 6/3/2010 3:00:00 20.87 7.21 712 5.33WBBR 6/3/2010 4:00:00 20.62 7.21 719 5.3WBBR 6/3/2010 5:00:00 20.47 7.2 729 5.34WBBR 6/3/2010 6:00:00 20.33 7.2 737 5.36WBBR 6/3/2010 7:00:00 20.16 7.2 742 5.46WBBR 6/3/2010 8:00:00 20.16 7.22 750 5.57WBBR 6/3/2010 9:00:00 20.33 7.26 755 5.69WBBR 6/3/2010 10:00:00 20.66 7.26 760 5.86WBBR 6/3/2010 11:00:00 21.28 7.28 767 6.19WBBR 6/3/2010 12:00:00 21.89 7.31 772 6.42WBBR 6/3/2010 13:00:00 22.55 7.37 778 6.66WBBR 6/3/2010 14:00:00 23.1 7.41 783 6.87WBBR 6/3/2010 15:00:00 23.53 7.45 789 6.91WBBR 6/3/2010 16:00:00 23.78 7.45 789 7.14WBBR 6/3/2010 17:00:00 23.84 7.45 793 7.04WBBR 6/3/2010 18:00:00 23.65 7.45 797 6.97WBBR 6/3/2010 19:00:00 23.39 7.46 800 6.86WBBR 6/3/2010 20:00:00 23.02 7.45 783 6.71WBBR 6/3/2010 21:00:00 22.61 7.43 810 6.56WBBR 6/3/2010 22:00:00 22.21 7.42 801 6.4WBBR 6/3/2010 23:00:00 21.81 7.4 707 6.28WBBR 6/4/2010 0:00:00 21.43 7.38 827 6.15WBBR 6/4/2010 1:00:00 21.07 7.37 832 6.09WBBR 6/4/2010 2:00:00 20.73 7.36 833 6.01WBBR 6/4/2010 3:00:00 20.43 7.34 835 6.01WBBR 6/4/2010 4:00:00 20.19 7.34 835 5.91WBBR 6/4/2010 5:00:00 20.03 7.35 836 5.91WBBR 6/4/2010 6:00:00 19.88 7.33 838 5.91WBBR 6/4/2010 7:00:00 19.81 7.33 839 5.98WBBR 6/4/2010 8:00:00 19.82 7.32 841 6.1WBBR 6/4/2010 10:00:00 20 7.6 850 6.57WBBR 6/4/2010 11:00:00 20.35 7.62 853 6.8WBBR 6/4/2010 12:00:00 20.85 7.66 857 7.12WBBR 6/4/2010 13:00:00 21.35 7.68 861 7.42WBBR 6/4/2010 14:00:00 21.94 7.7 865 7.62WBBR 6/4/2010 15:00:00 22.38 7.72 866 7.75

West Branch DuPage River Butterfield Road Crossing Page 12 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/4/2010 16:00:00 22.8 7.74 870 7.74WBBR 6/4/2010 17:00:00 22.94 7.75 871 7.66WBBR 6/4/2010 18:00:00 23.03 7.75 872 7.48WBBR 6/4/2010 19:00:00 23 7.73 875 7.25WBBR 6/4/2010 20:00:00 22.83 7.71 876 6.97WBBR 6/4/2010 21:00:00 22.66 7.7 879 6.75WBBR 6/4/2010 22:00:00 22.47 7.68 884 6.51WBBR 6/4/2010 23:00:00 22.28 7.66 889 6.34WBBR 6/5/2010 0:00:00 22.01 7.64 894 6.24WBBR 6/5/2010 1:00:00 21.74 7.61 895 6.09WBBR 6/5/2010 2:00:00 21.45 7.59 898 6WBBR 6/5/2010 3:00:00 21.15 7.56 898 5.9WBBR 6/5/2010 4:00:00 20.91 7.53 896 5.79WBBR 6/5/2010 5:00:00 20.76 7.51 893 5.7WBBR 6/5/2010 6:00:00 20.68 7.48 891 5.62WBBR 6/5/2010 7:00:00 20.66 7.47 889 5.64WBBR 6/5/2010 8:00:00 20.65 7.45 888 5.63WBBR 6/5/2010 9:00:00 20.66 7.45 885 5.7WBBR 6/5/2010 10:00:00 20.66 7.48 876 5.86WBBR 6/5/2010 11:00:00 20.78 7.48 859 6.14WBBR 6/5/2010 12:00:00 20.98 7.47 796 6.11WBBR 6/5/2010 13:00:00 21.3 7.45 790 6.31WBBR 6/5/2010 14:00:00 21.49 7.44 738 6.48WBBR 6/5/2010 15:00:00 21.53 7.42 696 6.55WBBR 6/5/2010 16:00:00 21.55 7.41 682 6.37WBBR 6/5/2010 17:00:00 21.43 7.37 662 6.21WBBR 6/5/2010 18:00:00 21.33 7.34 629 6.08WBBR 6/5/2010 19:00:00 21.2 7.31 624 5.95WBBR 6/5/2010 20:00:00 21.17 7.3 621 5.83WBBR 6/5/2010 21:00:00 21.12 7.29 632 5.73WBBR 6/5/2010 22:00:00 21.11 7.3 641 5.68WBBR 6/5/2010 23:00:00 20.96 7.29 652 5.66WBBR 6/6/2010 0:00:00 20.78 7.29 663 5.66WBBR 6/6/2010 1:00:00 20.6 7.3 675 5.66WBBR 6/6/2010 2:00:00 20.47 7.29 682 5.64WBBR 6/6/2010 3:00:00 20.26 7.3 685 5.67WBBR 6/6/2010 4:00:00 20.08 7.3 687 5.73WBBR 6/6/2010 5:00:00 19.89 7.34 689 5.76WBBR 6/6/2010 6:00:00 19.7 7.32 695 5.83WBBR 6/6/2010 7:00:00 19.56 7.32 699 5.89WBBR 6/6/2010 8:00:00 19.62 7.32 703 6WBBR 6/6/2010 9:00:00 19.82 7.33 708 6.17WBBR 6/6/2010 10:00:00 20.28 7.36 713 6.38WBBR 6/6/2010 11:00:00 20.9 7.39 720 6.65

West Branch DuPage River Butterfield Road Crossing Page 13 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/6/2010 12:00:00 21.38 7.42 728 6.88WBBR 6/6/2010 13:00:00 21.84 7.45 737 7.02WBBR 6/6/2010 14:00:00 22.22 7.47 743 7.09WBBR 6/6/2010 15:00:00 22.25 7.47 748 7.08WBBR 6/6/2010 16:00:00 22.19 7.47 753 7WBBR 6/6/2010 17:00:00 22.1 7.47 759 6.96WBBR 6/6/2010 18:00:00 21.87 7.46 764 6.87WBBR 6/6/2010 19:00:00 21.65 7.46 773 6.82WBBR 6/6/2010 20:00:00 21.28 7.45 783 6.79WBBR 6/6/2010 21:00:00 20.88 7.43 792 6.77WBBR 6/6/2010 22:00:00 20.49 7.4 797 6.66WBBR 6/6/2010 23:00:00 20.11 7.37 800 6.54WBBR 6/7/2010 0:00:00 19.76 7.36 795 6.46WBBR 6/7/2010 1:00:00 19.5 7.33 784 6.38WBBR 6/7/2010 2:00:00 19.28 7.33 781 6.33WBBR 6/7/2010 3:00:00 19.09 7.33 778 6.27WBBR 6/7/2010 4:00:00 18.93 7.31 776 6.24WBBR 6/7/2010 5:00:00 18.73 7.3 779 6.23WBBR 6/7/2010 6:00:00 18.61 7.3 782 6.26WBBR 6/7/2010 7:00:00 18.56 7.29 783 6.31WBBR 6/7/2010 8:00:00 18.64 7.3 787 6.41WBBR 6/7/2010 9:00:00 18.94 7.33 791 6.61WBBR 6/7/2010 10:00:00 19.47 7.37 795 6.91WBBR 6/7/2010 11:00:00 20.16 7.41 800 7.2WBBR 6/7/2010 12:00:00 20.66 7.45 806 7.42WBBR 6/7/2010 13:00:00 21.05 7.47 813 7.51WBBR 6/7/2010 14:00:00 21.58 7.49 819 7.61WBBR 6/7/2010 15:00:00 22.04 7.51 823 7.71WBBR 6/7/2010 16:00:00 22.54 7.54 824 7.87WBBR 6/7/2010 17:00:00 22.65 7.54 823 7.87WBBR 6/7/2010 18:00:00 22.42 7.53 821 7.72WBBR 6/7/2010 19:00:00 22.06 7.51 821 7.57WBBR 6/7/2010 20:00:00 21.71 7.49 824 7.31WBBR 6/7/2010 21:00:00 21.33 7.46 832 7.11WBBR 6/7/2010 22:00:00 20.95 7.44 844 6.95WBBR 6/7/2010 23:00:00 20.5 7.42 855 6.77WBBR 6/8/2010 0:00:00 20.08 7.39 860 6.64WBBR 6/8/2010 1:00:00 19.73 7.36 860 6.54WBBR 6/8/2010 2:00:00 19.43 7.33 860 6.43WBBR 6/8/2010 3:00:00 19.16 7.32 855 6.37WBBR 6/8/2010 4:00:00 18.95 7.3 853 6.35WBBR 6/8/2010 5:00:00 18.78 7.3 849 6.29WBBR 6/8/2010 6:00:00 18.66 7.29 847 6.29WBBR 6/8/2010 7:00:00 18.54 7.29 845 6.31

West Branch DuPage River Butterfield Road Crossing Page 14 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/8/2010 8:00:00 18.46 7.29 847 6.34WBBR 6/8/2010 9:00:00 18.39 7.29 847 6.47WBBR 6/8/2010 10:00:00 18.36 7.3 849 6.58WBBR 6/8/2010 11:00:00 18.38 7.3 851 6.75WBBR 6/8/2010 12:00:00 18.4 7.32 853 6.9WBBR 6/8/2010 13:00:00 18.43 7.33 854 7.07WBBR 6/8/2010 14:00:00 18.46 7.34 854 7.2WBBR 6/8/2010 15:00:00 18.45 7.35 853 7.27WBBR 6/8/2010 16:00:00 18.42 7.35 856 7.31WBBR 6/8/2010 17:00:00 18.39 7.34 853 7.24WBBR 6/8/2010 18:00:00 18.34 7.33 855 7.15WBBR 6/8/2010 19:00:00 18.28 7.32 860 7.05WBBR 6/8/2010 20:00:00 18.22 7.31 862 6.92WBBR 6/8/2010 21:00:00 18.13 7.29 866 6.85WBBR 6/8/2010 22:00:00 18.05 7.27 875 6.76WBBR 6/8/2010 23:00:00 17.98 7.25 877 6.67WBBR 6/9/2010 0:00:00 17.93 7.23 870 6.6WBBR 6/9/2010 1:00:00 17.92 7.22 866 6.52WBBR 6/9/2010 2:00:00 17.94 7.21 859 6.45WBBR 6/9/2010 3:00:00 17.98 7.22 851 6.36WBBR 6/9/2010 4:00:00 18.04 7.22 845 6.32WBBR 6/9/2010 5:00:00 18.07 7.22 844 6.33WBBR 6/9/2010 6:00:00 18.09 7.22 846 6.33WBBR 6/9/2010 7:00:00 18.15 7.23 849 6.41WBBR 6/9/2010 8:00:00 18.33 7.24 853 6.49WBBR 6/9/2010 9:00:00 18.68 7.26 860 6.69WBBR 6/9/2010 10:00:00 19.22 7.29 866 6.92WBBR 6/9/2010 11:00:00 20.03 7.34 868 7.17WBBR 6/9/2010 12:00:00 20.97 7.39 870 7.55WBBR 6/9/2010 13:00:00 21.83 7.45 871 7.83WBBR 6/9/2010 14:00:00 22.66 7.51 871 8.04WBBR 6/9/2010 15:00:00 23.21 7.55 872 8.1WBBR 6/9/2010 16:00:00 23.58 7.58 871 8.16WBBR 6/9/2010 17:00:00 23.66 7.6 872 8.19WBBR 6/9/2010 18:00:00 23.51 7.61 874 8.08WBBR 6/9/2010 19:00:00 23.24 7.6 877 7.85WBBR 6/9/2010 20:00:00 22.92 7.58 879 7.49WBBR 6/9/2010 21:00:00 22.57 7.55 883 7.21WBBR 6/9/2010 22:00:00 22.21 7.54 889 6.99WBBR 6/9/2010 23:00:00 21.86 7.52 898 6.86WBBR 6/10/2010 0:00:00 21.44 7.49 907 6.73WBBR 6/10/2010 1:00:00 21.01 7.44 909 6.55WBBR 6/10/2010 2:00:00 20.57 7.41 911 6.39WBBR 6/10/2010 3:00:00 20.12 7.37 909 6.26

West Branch DuPage River Butterfield Road Crossing Page 15 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/10/2010 4:00:00 19.64 7.34 906 6.22WBBR 6/10/2010 5:00:00 19.24 7.32 903 6.21WBBR 6/10/2010 6:00:00 18.98 7.31 899 6.25WBBR 6/10/2010 7:00:00 18.92 7.3 897 6.31WBBR 6/10/2010 8:00:00 19.09 7.3 894 6.45WBBR 6/10/2010 9:00:00 19.51 7.32 892 6.67WBBR 6/10/2010 10:00:00 20.05 7.37 894 7.06WBBR 6/10/2010 11:00:00 20.87 7.42 896 7.59WBBR 6/10/2010 12:00:00 21.45 7.47 899 8.05WBBR 6/10/2010 13:00:00 22.2 7.53 905 8.4WBBR 6/10/2010 14:00:00 22.9 7.57 913 8.5WBBR 6/10/2010 15:00:00 23.3 7.59 919 8.6WBBR 6/10/2010 16:00:00 23.57 7.6 924 8.43WBBR 6/10/2010 17:00:00 23.74 7.59 930 8.17WBBR 6/10/2010 18:00:00 23.66 7.6 924 8.13WBBR 6/10/2010 19:00:00 23.34 7.58 922 7.84WBBR 6/10/2010 20:00:00 22.96 7.55 920 7.52WBBR 6/10/2010 21:00:00 22.61 7.52 919 7.13WBBR 6/10/2010 22:00:00 22.26 7.49 918 6.85WBBR 6/10/2010 23:00:00 21.88 7.46 918 6.6WBBR 6/11/2010 0:00:00 21.51 7.44 920 6.47WBBR 6/11/2010 1:00:00 21.16 7.42 926 6.35WBBR 6/11/2010 2:00:00 20.77 7.39 930 6.24WBBR 6/11/2010 3:00:00 20.42 7.37 933 6.19WBBR 6/11/2010 4:00:00 20.16 7.35 931 6.15WBBR 6/11/2010 5:00:00 19.93 7.34 929 6.13WBBR 6/11/2010 6:00:00 19.79 7.33 927 6.11WBBR 6/11/2010 7:00:00 19.81 7.33 927 6.1WBBR 6/11/2010 8:00:00 19.97 7.34 926 6.27WBBR 6/11/2010 9:00:00 20.41 7.36 927 6.6WBBR 6/11/2010 10:00:00 20.97 7.39 929 7.06WBBR 6/11/2010 11:00:00 21.6 7.44 931 7.57WBBR 6/11/2010 12:00:00 22.04 7.49 932 7.99WBBR 6/11/2010 13:00:00 22.64 7.55 929 8.24WBBR 6/11/2010 14:00:00 23.32 7.58 935 8.33WBBR 6/11/2010 15:00:00 23.84 7.68 945 8.38WBBR 6/11/2010 16:00:00 24.34 7.67 958 8.31WBBR 6/11/2010 17:00:00 24.7 7.69 966 8.18WBBR 6/11/2010 18:00:00 25.07 7.72 962 8.35WBBR 6/11/2010 19:00:00 25.06 7.74 959 8.34WBBR 6/11/2010 20:00:00 24.95 7.73 961 8.07WBBR 6/11/2010 21:00:00 24.68 7.68 962 7.53WBBR 6/11/2010 22:00:00 24.36 7.65 962 6.97WBBR 6/11/2010 23:00:00 24.02 7.62 964 6.56

West Branch DuPage River Butterfield Road Crossing Page 16 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/12/2010 0:00:00 23.68 7.58 962 6.32WBBR 6/12/2010 1:00:00 23.35 7.56 956 6.1WBBR 6/12/2010 2:00:00 23.02 7.52 954 5.93WBBR 6/12/2010 3:00:00 22.75 7.48 956 5.73WBBR 6/12/2010 4:00:00 22.55 7.45 958 5.6WBBR 6/12/2010 5:00:00 22.41 7.43 958 5.5WBBR 6/12/2010 6:00:00 22.31 7.42 958 5.39WBBR 6/12/2010 7:00:00 22.26 7.41 957 5.31WBBR 6/12/2010 8:00:00 22.28 7.41 955 5.36WBBR 6/12/2010 9:00:00 22.33 7.4 957 5.43WBBR 6/12/2010 10:00:00 22.23 7.43 954 5.69WBBR 6/12/2010 11:00:00 22.23 7.45 951 5.97WBBR 6/12/2010 12:00:00 22.22 7.47 950 6.13WBBR 6/12/2010 13:00:00 22.71 7.47 949 6.27WBBR 6/12/2010 14:00:00 23.05 7.5 955 6.71WBBR 6/12/2010 15:00:00 23.48 7.55 956 7.36WBBR 6/12/2010 16:00:00 23.54 7.56 961 7.5WBBR 6/12/2010 17:00:00 23.62 7.58 965 7.51WBBR 6/12/2010 18:00:00 23.55 7.57 969 7.35WBBR 6/12/2010 19:00:00 23.27 7.55 967 6.99WBBR 6/12/2010 20:00:00 22.91 7.52 962 6.86WBBR 6/12/2010 21:00:00 22.44 7.48 947 6.66WBBR 6/12/2010 22:00:00 22.03 7.45 941 6.39WBBR 6/12/2010 23:00:00 21.71 7.43 945 6.25WBBR 6/13/2010 0:00:00 21.43 7.43 946 6.16WBBR 6/13/2010 1:00:00 21.16 7.42 950 6.11WBBR 6/13/2010 2:00:00 20.92 7.41 948 5.97WBBR 6/13/2010 3:00:00 20.73 7.39 924 5.83WBBR 6/13/2010 4:00:00 20.54 7.36 886 5.69WBBR 6/13/2010 5:00:00 20.39 7.33 847 5.56WBBR 6/13/2010 6:00:00 20.27 7.32 827 5.54WBBR 6/13/2010 7:00:00 20.22 7.3 822 5.48WBBR 6/13/2010 8:00:00 20.18 7.3 836 5.54WBBR 6/13/2010 9:00:00 20.26 7.3 849 5.61WBBR 6/13/2010 10:00:00 20.4 7.31 861 5.79WBBR 6/13/2010 11:00:00 20.57 7.34 866 6.01WBBR 6/13/2010 12:00:00 21.01 7.36 869 6.29WBBR 6/13/2010 13:00:00 21.37 7.38 871 6.52WBBR 6/13/2010 14:00:00 21.54 7.41 875 6.77WBBR 6/13/2010 15:00:00 21.59 7.42 876 6.89WBBR 6/13/2010 16:00:00 21.8 7.43 882 6.88WBBR 6/13/2010 17:00:00 21.83 7.44 888 6.83WBBR 6/13/2010 18:00:00 21.88 7.45 893 6.86WBBR 6/13/2010 19:00:00 21.9 7.45 898 6.8

West Branch DuPage River Butterfield Road Crossing Page 17 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/13/2010 20:00:00 21.86 7.45 896 6.79WBBR 6/13/2010 21:00:00 21.77 7.44 895 6.74WBBR 6/13/2010 22:00:00 21.62 7.43 896 6.63WBBR 6/13/2010 23:00:00 21.48 7.42 900 6.39WBBR 6/14/2010 0:00:00 21.31 7.4 899 6.31WBBR 6/14/2010 1:00:00 21.14 7.39 900 6.25WBBR 6/14/2010 2:00:00 20.95 7.38 906 6.21WBBR 6/14/2010 3:00:00 20.73 7.36 913 6.16WBBR 6/14/2010 4:00:00 20.46 7.34 918 6.15WBBR 6/14/2010 5:00:00 20.23 7.35 921 6.1WBBR 6/14/2010 6:00:00 20.1 7.35 921 6.06WBBR 6/14/2010 7:00:00 20.06 7.35 920 6.09WBBR 6/14/2010 8:00:00 20.17 7.36 920 6.23WBBR 6/14/2010 9:00:00 20.3 7.36 919 6.39WBBR 6/14/2010 10:00:00 20.42 7.38 918 6.61WBBR 6/14/2010 11:00:00 20.49 7.4 918 6.72WBBR 6/14/2010 12:00:00 20.66 7.41 919 6.93WBBR 6/14/2010 13:00:00 20.91 7.43 920 7.12WBBR 6/14/2010 14:00:00 21.11 7.45 924 7.4WBBR 6/14/2010 15:00:00 21.35 7.57 929 7.7WBBR 6/14/2010 16:00:00 21.69 7.57 931 7.94WBBR 6/14/2010 17:00:00 21.81 7.58 933 8.07WBBR 6/14/2010 18:00:00 21.89 7.6 933 8.18WBBR 6/14/2010 19:00:00 21.85 7.6 934 8.08WBBR 6/14/2010 20:00:00 21.68 7.59 933 7.91WBBR 6/14/2010 21:00:00 21.45 7.57 934 7.6WBBR 6/14/2010 22:00:00 21.12 7.52 938 7.25WBBR 6/14/2010 23:00:00 20.82 7.5 942 6.94WBBR 6/15/2010 0:00:00 20.53 7.47 940 6.74WBBR 6/15/2010 1:00:00 20.24 7.5 937 6.61WBBR 6/15/2010 2:00:00 19.95 7.44 935 6.46WBBR 6/15/2010 3:00:00 19.69 7.41 935 6.4WBBR 6/15/2010 4:00:00 19.45 7.39 935 6.36WBBR 6/15/2010 5:00:00 19.24 7.38 935 6.32WBBR 6/15/2010 6:00:00 19.1 7.38 935 6.29WBBR 6/15/2010 7:00:00 19.04 7.36 936 6.33WBBR 6/15/2010 8:00:00 19.13 7.37 938 6.47WBBR 6/15/2010 9:00:00 19.44 7.38 939 6.73WBBR 6/15/2010 10:00:00 19.72 7.43 939 7.11WBBR 6/15/2010 11:00:00 20.14 7.46 942 7.56WBBR 6/15/2010 12:00:00 20.62 7.51 947 7.95WBBR 6/15/2010 13:00:00 20.92 7.57 952 8.24WBBR 6/15/2010 14:00:00 21.14 7.56 956 8.36WBBR 6/15/2010 15:00:00 21.38 7.57 963 8.23

West Branch DuPage River Butterfield Road Crossing Page 18 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/15/2010 16:00:00 21.54 7.55 971 8.03WBBR 6/15/2010 17:00:00 21.66 7.58 963 7.75WBBR 6/15/2010 18:00:00 21.74 7.57 915 7.62WBBR 6/15/2010 19:00:00 21.81 7.56 889 7.56WBBR 6/15/2010 20:00:00 21.7 7.52 804 7.38WBBR 6/15/2010 21:00:00 21.04 7.44 774 7.12WBBR 6/15/2010 22:00:00 20.69 7.33 699 6.72WBBR 6/15/2010 23:00:00 20.69 7.28 596 6.41WBBR 6/16/2010 0:00:00 20.72 7.22 572 6.14WBBR 6/16/2010 1:00:00 20.67 7.21 596 5.99WBBR 6/16/2010 2:00:00 20.57 7.19 601 5.97WBBR 6/16/2010 3:00:00 20.42 7.19 618 5.92WBBR 6/16/2010 4:00:00 20.24 7.21 656 5.9WBBR 6/16/2010 5:00:00 20.06 7.18 687 5.88WBBR 6/16/2010 6:00:00 19.94 7.2 703 5.9WBBR 6/16/2010 7:00:00 19.89 7.25 715 5.95WBBR 6/16/2010 8:00:00 20 7.25 723 5.97WBBR 6/16/2010 9:00:00 20.35 7.26 722 6.08WBBR 6/16/2010 10:00:00 20.85 7.26 723 6.2WBBR 6/16/2010 11:00:00 21.5 7.34 729 6.39WBBR 6/16/2010 12:00:00 22.1 7.36 737 6.59WBBR 6/16/2010 13:00:00 22.71 7.42 742 6.73WBBR 6/16/2010 14:00:00 23.25 7.47 747 6.91WBBR 6/16/2010 15:00:00 23.83 7.48 759 7.12WBBR 6/16/2010 16:00:00 24.07 7.48 765 7.14WBBR 6/16/2010 17:00:00 24.07 7.52 769 7.16WBBR 6/16/2010 18:00:00 23.92 7.53 773 7.11WBBR 6/16/2010 19:00:00 23.75 7.52 776 6.98WBBR 6/16/2010 20:00:00 23.58 7.49 781 6.87WBBR 6/16/2010 21:00:00 23.33 7.48 785 6.72WBBR 6/16/2010 22:00:00 23.08 7.46 792 6.61WBBR 6/16/2010 23:00:00 22.82 7.42 798 6.48WBBR 6/17/2010 0:00:00 22.54 7.43 799 6.36WBBR 6/17/2010 1:00:00 22.3 7.39 804 6.21WBBR 6/17/2010 2:00:00 22.04 7.4 804 6.13WBBR 6/17/2010 3:00:00 21.77 7.37 780 6.05WBBR 6/17/2010 4:00:00 21.54 7.36 804 6.01WBBR 6/17/2010 5:00:00 21.34 7.34 802 6WBBR 6/17/2010 6:00:00 21.18 7.38 804 5.98WBBR 6/17/2010 7:00:00 21.12 7.36 804 6.02WBBR 6/17/2010 8:00:00 21.28 7.36 802 6.14WBBR 6/17/2010 9:00:00 21.57 7.37 805 6.34WBBR 6/17/2010 10:00:00 22.04 7.4 809 6.64WBBR 6/17/2010 11:00:00 22.73 7.43 811 7

West Branch DuPage River Butterfield Road Crossing Page 19 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/17/2010 12:00:00 23.41 7.47 818 7.4WBBR 6/17/2010 13:00:00 23.93 7.5 825 7.71WBBR 6/17/2010 14:00:00 24.35 7.56 828 7.95WBBR 6/17/2010 16:00:00 25.08 7.66 825 8.19WBBR 6/17/2010 17:00:00 25.61 7.71 821 8.32WBBR 6/17/2010 18:00:00 25.78 7.72 816 8.34WBBR 6/17/2010 19:00:00 25.73 7.71 812 8.22WBBR 6/17/2010 20:00:00 25.52 7.69 811 7.95WBBR 6/17/2010 21:00:00 25.24 7.65 812 7.59WBBR 6/17/2010 22:00:00 24.92 7.62 815 7.27WBBR 6/17/2010 23:00:00 24.59 7.58 818 6.98WBBR 6/18/2010 0:00:00 24.3 7.55 826 6.73WBBR 6/18/2010 1:00:00 24.01 7.52 837 6.56WBBR 6/18/2010 2:00:00 23.67 7.49 849 6.4WBBR 6/18/2010 3:00:00 23.31 7.46 852 6.27WBBR 6/18/2010 4:00:00 23 7.42 852 6.16WBBR 6/18/2010 5:00:00 22.72 7.41 843 6.21WBBR 6/18/2010 6:00:00 22.47 7.39 838 6.12WBBR 6/18/2010 7:00:00 22.32 7.37 830 6.07WBBR 6/18/2010 8:00:00 22.26 7.35 832 6.03WBBR 6/18/2010 9:00:00 22.39 7.35 829 6.07WBBR 6/18/2010 10:00:00 22.82 7.37 828 6.27WBBR 6/18/2010 11:00:00 23.38 7.43 842 6.68WBBR 6/18/2010 12:00:00 24.14 7.5 851 7.22WBBR 6/18/2010 13:00:00 25.05 7.59 855 7.8WBBR 6/18/2010 14:00:00 25.91 7.67 858 8.31WBBR 6/18/2010 15:00:00 26.65 7.73 860 8.69WBBR 6/18/2010 16:00:00 26.61 7.76 857 8.53WBBR 6/18/2010 17:00:00 26.44 7.76 856 8.1WBBR 6/18/2010 18:00:00 26.18 7.72 837 7.53WBBR 6/18/2010 19:00:00 25.77 7.65 824 7.05WBBR 6/18/2010 20:00:00 25.41 7.61 807 6.74WBBR 6/18/2010 21:00:00 25.16 7.6 758 6.83WBBR 6/18/2010 22:00:00 24.31 7.55 768 6.92WBBR 6/18/2010 23:00:00 23.23 7.42 737 6.47WBBR 6/19/2010 0:00:00 22.59 7.36 785 6.3WBBR 6/19/2010 1:00:00 22.28 7.32 773 6.18WBBR 6/19/2010 2:00:00 22.06 7.29 767 6.04WBBR 6/19/2010 3:00:00 21.74 7.24 752 5.82WBBR 6/19/2010 4:00:00 21.49 7.2 709 5.81WBBR 6/19/2010 5:00:00 21.36 7.2 685 5.88WBBR 6/19/2010 6:00:00 21.31 7.19 682 5.87WBBR 6/19/2010 7:00:00 21.29 7.18 670 5.83WBBR 6/19/2010 8:00:00 21.31 7.17 656 5.75

West Branch DuPage River Butterfield Road Crossing Page 20 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/19/2010 9:00:00 21.54 7.17 648 5.75WBBR 6/19/2010 10:00:00 21.9 7.19 644 5.76WBBR 6/19/2010 11:00:00 22.49 7.23 645 5.88WBBR 6/19/2010 12:00:00 23.15 7.28 648 6.17WBBR 6/19/2010 13:00:00 23.82 7.34 645 6.42WBBR 6/19/2010 14:00:00 24.39 7.37 641 6.54WBBR 6/19/2010 15:00:00 24.89 7.42 649 6.78WBBR 6/19/2010 16:00:00 25.18 7.45 657 6.92WBBR 6/19/2010 17:00:00 25.35 7.47 665 7WBBR 6/19/2010 18:00:00 25.27 7.49 671 6.96WBBR 6/19/2010 19:00:00 25.11 7.48 678 6.88WBBR 6/19/2010 20:00:00 24.86 7.47 684 6.72WBBR 6/19/2010 21:00:00 24.59 7.44 689 6.55WBBR 6/19/2010 22:00:00 24.3 7.42 696 6.44WBBR 6/19/2010 23:00:00 23.98 7.39 703 6.3WBBR 6/20/2010 0:00:00 23.65 7.36 711 6.13WBBR 6/20/2010 1:00:00 23.34 7.33 715 5.97WBBR 6/20/2010 2:00:00 23.06 7.3 719 5.83WBBR 6/20/2010 3:00:00 22.82 7.28 723 5.73WBBR 6/20/2010 4:00:00 22.6 7.26 727 5.69WBBR 6/20/2010 5:00:00 22.38 7.25 730 5.64WBBR 6/20/2010 6:00:00 22.22 7.24 733 5.62WBBR 6/20/2010 7:00:00 22.14 7.23 736 5.64WBBR 6/20/2010 8:00:00 22.12 7.23 739 5.7WBBR 6/20/2010 9:00:00 22.12 7.23 742 5.74WBBR 6/20/2010 10:00:00 22.14 7.24 746 5.9WBBR 6/20/2010 11:00:00 22.43 7.27 749 6.1WBBR 6/20/2010 12:00:00 22.77 7.3 751 6.36WBBR 6/20/2010 13:00:00 23.11 7.33 756 6.67WBBR 6/20/2010 14:00:00 23.55 7.37 761 6.98WBBR 6/20/2010 15:00:00 24.16 7.43 766 7.35WBBR 6/20/2010 16:00:00 24.67 7.48 778 7.63WBBR 6/20/2010 17:00:00 24.86 7.51 783 7.75WBBR 6/20/2010 18:00:00 25.29 7.54 785 7.81WBBR 6/20/2010 19:00:00 25.35 7.56 788 7.7WBBR 6/20/2010 20:00:00 25.19 7.53 787 7.41WBBR 6/20/2010 21:00:00 24.95 7.52 789 7.13WBBR 6/20/2010 22:00:00 24.65 7.49 791 6.9WBBR 6/20/2010 23:00:00 24.33 7.47 794 6.71WBBR 6/21/2010 0:00:00 23.97 7.43 801 6.5WBBR 6/21/2010 1:00:00 23.58 7.39 809 6.34WBBR 6/21/2010 2:00:00 23.2 7.37 816 6.21WBBR 6/21/2010 3:00:00 22.85 7.33 819 6.13WBBR 6/21/2010 4:00:00 22.53 7.31 821 6.06

West Branch DuPage River Butterfield Road Crossing Page 21 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/21/2010 5:00:00 22.28 7.3 820 5.99WBBR 6/21/2010 6:00:00 22.07 7.28 819 5.93WBBR 6/21/2010 7:00:00 21.97 7.3 818 5.93WBBR 6/21/2010 8:00:00 21.89 7.27 818 5.96WBBR 6/21/2010 9:00:00 21.82 7.26 819 5.98WBBR 6/21/2010 10:00:00 21.78 7.26 821 6.03WBBR 6/21/2010 11:00:00 21.89 7.28 825 6.22WBBR 6/21/2010 12:00:00 22.05 7.29 829 6.48WBBR 6/21/2010 13:00:00 22.33 7.33 833 6.82WBBR 6/21/2010 14:00:00 22.97 7.38 837 7.23WBBR 6/21/2010 15:00:00 23.59 7.45 840 7.69WBBR 6/21/2010 16:00:00 24.12 7.49 844 8.12WBBR 6/21/2010 17:00:00 24.42 7.54 846 8.3WBBR 6/21/2010 18:00:00 24.72 7.56 850 8.32WBBR 6/21/2010 19:00:00 24.75 7.56 853 8.13WBBR 6/21/2010 20:00:00 24.75 7.56 856 7.87WBBR 6/21/2010 21:00:00 24.7 7.54 857 7.55WBBR 6/21/2010 22:00:00 24.58 7.52 855 7.19WBBR 6/21/2010 23:00:00 24.4 7.49 852 6.9WBBR 6/22/2010 0:00:00 24.2 7.47 857 6.62WBBR 6/22/2010 1:00:00 23.99 7.44 863 6.39WBBR 6/22/2010 2:00:00 23.76 7.42 871 6.19WBBR 6/22/2010 3:00:00 23.48 7.4 881 6.09WBBR 6/22/2010 4:00:00 23.15 7.37 884 5.96WBBR 6/22/2010 5:00:00 22.83 7.35 886 5.84WBBR 6/22/2010 6:00:00 22.54 7.33 886 5.79WBBR 6/22/2010 7:00:00 22.31 7.31 885 5.77WBBR 6/22/2010 8:00:00 22.22 7.29 884 5.83WBBR 6/22/2010 9:00:00 22.31 7.29 886 6.02WBBR 6/22/2010 10:00:00 22.69 7.33 886 6.4WBBR 6/22/2010 11:00:00 23.07 7.38 887 6.89WBBR 6/22/2010 12:00:00 23.4 7.43 890 7.4WBBR 6/22/2010 13:00:00 24.2 7.5 894 7.84WBBR 6/22/2010 14:00:00 24.68 7.55 900 8.24WBBR 6/22/2010 15:00:00 25.15 7.6 906 8.53WBBR 6/22/2010 16:00:00 25.76 7.64 911 8.7WBBR 6/22/2010 17:00:00 26.22 7.67 916 8.7WBBR 6/22/2010 18:00:00 26.59 7.68 918 8.64WBBR 6/22/2010 19:00:00 26.79 7.69 917 8.41WBBR 6/22/2010 20:00:00 26.79 7.7 912 8.29WBBR 6/22/2010 21:00:00 26.54 7.67 910 7.88WBBR 6/22/2010 22:00:00 26.21 7.62 908 7.31WBBR 6/22/2010 23:00:00 25.89 7.57 908 6.81WBBR 6/23/2010 0:00:00 25.54 7.53 909 6.42

West Branch DuPage River Butterfield Road Crossing Page 22 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/23/2010 1:00:00 25.21 7.49 912 6.14WBBR 6/23/2010 2:00:00 24.89 7.46 916 6WBBR 6/23/2010 3:00:00 24.58 7.44 921 5.88WBBR 6/23/2010 4:00:00 24.23 7.41 926 5.76WBBR 6/23/2010 5:00:00 23.89 7.38 934 5.7WBBR 6/23/2010 6:00:00 23.55 7.36 936 5.58WBBR 6/23/2010 7:00:00 23.32 7.34 932 5.48WBBR 6/23/2010 8:00:00 23.17 7.33 930 5.48WBBR 6/23/2010 9:00:00 23.04 7.33 925 5.49WBBR 6/23/2010 10:00:00 22.89 7.34 920 5.65WBBR 6/23/2010 11:00:00 22.82 7.34 919 5.7WBBR 6/23/2010 12:00:00 22.78 7.34 914 5.88WBBR 6/23/2010 13:00:00 23.01 7.37 913 6.2WBBR 6/23/2010 14:00:00 23.4 7.39 917 6.58WBBR 6/23/2010 15:00:00 24.09 7.44 912 6.98WBBR 6/23/2010 16:00:00 24.72 7.49 910 7.46WBBR 6/23/2010 17:00:00 25.15 7.52 920 7.75WBBR 6/23/2010 18:00:00 25.13 7.58 881 7.62WBBR 6/23/2010 19:00:00 25.05 7.56 830 7.21WBBR 6/23/2010 20:00:00 24.63 7.49 807 6.92WBBR 6/23/2010 21:00:00 23.68 7.35 731 6.37WBBR 6/23/2010 22:00:00 23.52 7.23 546 5.92WBBR 6/23/2010 23:00:00 23.36 7.18 523 5.74WBBR 6/24/2010 0:00:00 23.11 7.17 560 5.64WBBR 6/24/2010 1:00:00 22.89 7.16 556 5.58WBBR 6/24/2010 2:00:00 22.71 7.13 536 5.46WBBR 6/24/2010 3:00:00 22.6 7.1 512 5.23WBBR 6/24/2010 4:00:00 22.43 7.08 503 5.19WBBR 6/24/2010 5:00:00 22.22 7.07 503 5.21WBBR 6/24/2010 6:00:00 22.06 7.06 518 5.17WBBR 6/24/2010 7:00:00 21.89 7.07 533 5.14WBBR 6/24/2010 8:00:00 21.77 7.07 540 5.29WBBR 6/24/2010 9:00:00 21.87 7.1 565 5.46WBBR 6/24/2010 10:00:00 22.19 7.14 576 5.71WBBR 6/24/2010 11:00:00 22.74 7.19 594 5.98WBBR 6/24/2010 12:00:00 23.43 7.24 606 6.33WBBR 6/24/2010 13:00:00 24.19 7.3 616 6.68WBBR 6/24/2010 14:00:00 24.87 7.36 633 7.04WBBR 6/24/2010 15:00:00 25.45 7.41 648 7.35WBBR 6/24/2010 16:00:00 25.74 7.45 663 7.5WBBR 6/24/2010 17:00:00 25.95 7.49 674 7.61WBBR 6/24/2010 18:00:00 26.01 7.5 684 7.66WBBR 6/24/2010 19:00:00 25.83 7.5 695 7.65WBBR 6/24/2010 20:00:00 25.5 7.49 704 7.47

West Branch DuPage River Butterfield Road Crossing Page 23 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/24/2010 21:00:00 25.1 7.46 712 7.27WBBR 6/24/2010 22:00:00 24.64 7.42 720 6.95WBBR 6/24/2010 23:00:00 24.15 7.36 726 6.59WBBR 6/25/2010 0:00:00 23.71 7.32 730 6.29WBBR 6/25/2010 1:00:00 23.33 7.29 734 6.04WBBR 6/25/2010 2:00:00 22.98 7.26 738 5.9WBBR 6/25/2010 3:00:00 22.7 7.24 740 5.78WBBR 6/25/2010 4:00:00 22.47 7.23 736 5.75WBBR 6/25/2010 5:00:00 22.27 7.21 724 5.71WBBR 6/25/2010 6:00:00 22.08 7.22 726 5.69WBBR 6/25/2010 7:00:00 21.94 7.21 711 5.65WBBR 6/25/2010 8:00:00 21.93 7.21 699 5.78WBBR 6/25/2010 9:00:00 22.07 7.22 709 5.88WBBR 6/25/2010 10:00:00 22.45 7.25 715 6.12WBBR 6/25/2010 11:00:00 22.86 7.3 717 6.44WBBR 6/25/2010 12:00:00 23.62 7.36 709 6.91WBBR 6/25/2010 13:00:00 24.21 7.42 756 7.32WBBR 6/25/2010 14:00:00 24.79 7.47 768 7.67WBBR 6/25/2010 16:00:00 25.6 7.64 803 8.13WBBR 6/25/2010 17:00:00 25.92 7.69 805 8.21WBBR 6/25/2010 18:00:00 26.28 7.72 808 8.29WBBR 6/25/2010 19:00:00 26.28 7.72 814 8.09WBBR 6/25/2010 20:00:00 26.01 7.69 817 7.78WBBR 6/25/2010 21:00:00 25.65 7.65 822 7.46WBBR 6/25/2010 22:00:00 25.29 7.62 831 7.12WBBR 6/25/2010 23:00:00 24.91 7.57 838 6.86WBBR 6/26/2010 0:00:00 24.53 7.53 841 6.54WBBR 6/26/2010 1:00:00 24.18 7.49 841 6.26WBBR 6/26/2010 2:00:00 23.84 7.45 837 6.07WBBR 6/26/2010 3:00:00 23.5 7.42 838 5.87WBBR 6/26/2010 4:00:00 23.24 7.4 836 5.77WBBR 6/26/2010 5:00:00 22.9 7.39 822 5.93WBBR 6/26/2010 6:00:00 22.63 7.36 810 5.86WBBR 6/26/2010 7:00:00 22.37 7.34 811 5.8WBBR 6/26/2010 8:00:00 22.14 7.3 758 5.72WBBR 6/26/2010 9:00:00 22.03 7.28 764 5.79WBBR 6/26/2010 10:00:00 22.19 7.28 738 5.93WBBR 6/26/2010 11:00:00 22.76 7.29 689 5.98WBBR 6/26/2010 12:00:00 23.62 7.33 690 6.02WBBR 6/26/2010 13:00:00 24.38 7.37 699 6.14WBBR 6/26/2010 14:00:00 25.02 7.4 702 6.21WBBR 6/26/2010 15:00:00 25.5 7.42 698 6.21WBBR 6/26/2010 16:00:00 25.78 7.43 705 6.25WBBR 6/26/2010 17:00:00 26.04 7.47 717 6.45

West Branch DuPage River Butterfield Road Crossing Page 24 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/26/2010 18:00:00 26.23 7.5 729 6.61WBBR 6/26/2010 19:00:00 26.14 7.5 736 6.54WBBR 6/26/2010 20:00:00 26 7.49 737 6.36WBBR 6/26/2010 21:00:00 25.79 7.46 727 6.15WBBR 6/26/2010 22:00:00 25.49 7.43 718 5.92WBBR 6/26/2010 23:00:00 25.19 7.39 704 5.57WBBR 6/27/2010 0:00:00 24.89 7.36 706 5.49WBBR 6/27/2010 1:00:00 24.61 7.35 716 5.48WBBR 6/27/2010 2:00:00 24.37 7.33 725 5.4WBBR 6/27/2010 3:00:00 24.23 7.32 727 5.3WBBR 6/27/2010 4:00:00 24.08 7.31 730 5.23WBBR 6/27/2010 5:00:00 23.97 7.3 732 5.17WBBR 6/27/2010 6:00:00 23.94 7.3 733 5.15WBBR 6/27/2010 7:00:00 23.92 7.3 735 5.15WBBR 6/27/2010 8:00:00 24 7.31 735 5.22WBBR 6/27/2010 9:00:00 23.91 7.32 731 5.42WBBR 6/27/2010 10:00:00 23.9 7.32 726 5.55WBBR 6/27/2010 11:00:00 23.87 7.33 724 5.61WBBR 6/27/2010 12:00:00 23.9 7.31 691 5.57WBBR 6/27/2010 13:00:00 24.2 7.32 690 5.71WBBR 6/27/2010 14:00:00 24.65 7.34 676 5.89WBBR 6/27/2010 15:00:00 25.14 7.38 676 6.15WBBR 6/27/2010 16:00:00 25.56 7.4 666 6.25WBBR 6/27/2010 17:00:00 25.78 7.38 623 6.05WBBR 6/27/2010 18:00:00 25.82 7.35 600 5.73WBBR 6/27/2010 19:00:00 25.72 7.36 598 5.78WBBR 6/27/2010 20:00:00 25.56 7.37 612 5.85WBBR 6/27/2010 21:00:00 25.33 7.37 642 5.83WBBR 6/27/2010 22:00:00 25.1 7.37 660 5.72WBBR 6/27/2010 23:00:00 24.89 7.35 667 5.57WBBR 6/28/2010 0:00:00 24.67 7.34 678 5.49WBBR 6/28/2010 1:00:00 24.42 7.32 686 5.41WBBR 6/28/2010 2:00:00 24.19 7.3 691 5.37WBBR 6/28/2010 3:00:00 24.01 7.3 690 5.33WBBR 6/28/2010 4:00:00 23.87 7.29 689 5.29WBBR 6/28/2010 5:00:00 23.71 7.27 689 5.27WBBR 6/28/2010 6:00:00 23.57 7.26 689 5.26WBBR 6/28/2010 7:00:00 23.43 7.26 690 5.31WBBR 6/28/2010 8:00:00 23.39 7.27 692 5.37WBBR 6/28/2010 9:00:00 23.41 7.28 700 5.5WBBR 6/28/2010 10:00:00 23.68 7.3 705 5.73WBBR 6/28/2010 11:00:00 24.1 7.34 710 5.98WBBR 6/28/2010 12:00:00 24.6 7.38 717 6.33WBBR 6/28/2010 13:00:00 25.16 7.42 723 6.6

West Branch DuPage River Butterfield Road Crossing Page 25 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/28/2010 14:00:00 25.61 7.46 730 6.83WBBR 6/28/2010 15:00:00 25.91 7.49 734 6.89WBBR 6/28/2010 16:00:00 25.97 7.49 738 6.89WBBR 6/28/2010 17:00:00 26.01 7.51 744 6.85WBBR 6/28/2010 18:00:00 26.17 7.54 748 6.9WBBR 6/28/2010 19:00:00 26.12 7.54 745 6.84WBBR 6/28/2010 20:00:00 25.96 7.54 752 6.79WBBR 6/28/2010 21:00:00 25.59 7.52 754 6.69WBBR 6/28/2010 22:00:00 25.1 7.5 761 6.53WBBR 6/28/2010 23:00:00 24.58 7.47 761 6.41WBBR 6/29/2010 0:00:00 24.11 7.43 769 6.3WBBR 6/29/2010 1:00:00 23.64 7.39 770 6.16WBBR 6/29/2010 2:00:00 23.24 7.36 769 6.04WBBR 6/29/2010 3:00:00 22.89 7.33 770 5.93WBBR 6/29/2010 4:00:00 22.56 7.3 769 5.83WBBR 6/29/2010 5:00:00 22.28 7.27 768 5.78WBBR 6/29/2010 6:00:00 22.05 7.25 765 5.74WBBR 6/29/2010 7:00:00 21.85 7.24 764 5.76WBBR 6/29/2010 8:00:00 21.74 7.24 765 5.83WBBR 6/29/2010 9:00:00 21.85 7.25 766 5.97WBBR 6/29/2010 10:00:00 22.12 7.27 767 6.22WBBR 6/29/2010 11:00:00 22.51 7.31 770 6.57WBBR 6/29/2010 12:00:00 22.98 7.36 775 6.95WBBR 6/29/2010 13:00:00 23.53 7.41 780 7.24WBBR 6/29/2010 14:00:00 24 7.45 786 7.52WBBR 6/29/2010 15:00:00 24.06 7.45 791 7.55WBBR 6/29/2010 16:00:00 24.54 7.5 803 7.64WBBR 6/29/2010 17:00:00 24.6 7.51 808 7.7WBBR 6/29/2010 18:00:00 24.87 7.53 815 7.67WBBR 6/29/2010 19:00:00 24.81 7.53 822 7.56WBBR 6/29/2010 20:00:00 24.51 7.51 817 7.34WBBR 6/29/2010 21:00:00 24.17 7.48 813 7.05WBBR 6/29/2010 22:00:00 23.8 7.45 814 6.82WBBR 6/29/2010 23:00:00 23.39 7.42 820 6.64WBBR 6/30/2010 0:00:00 22.91 7.39 830 6.51WBBR 6/30/2010 1:00:00 22.37 7.36 838 6.45WBBR 6/30/2010 2:00:00 21.79 7.31 837 6.35WBBR 6/30/2010 3:00:00 21.27 7.27 838 6.23WBBR 6/30/2010 4:00:00 20.79 7.23 833 6.21WBBR 6/30/2010 5:00:00 20.36 7.19 832 6.15WBBR 6/30/2010 6:00:00 20 7.16 829 6.12WBBR 6/30/2010 7:00:00 19.71 7.14 828 6.13WBBR 6/30/2010 8:00:00 19.61 7.12 827 6.2WBBR 6/30/2010 9:00:00 19.69 7.13 830 6.33

West Branch DuPage River Butterfield Road Crossing Page 26 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 6/30/2010 10:00:00 20.04 7.16 832 6.55WBBR 6/30/2010 11:00:00 20.67 7.24 832 7.03WBBR 6/30/2010 12:00:00 21.47 7.32 836 7.54WBBR 6/30/2010 13:00:00 22.31 7.4 842 7.97WBBR 6/30/2010 14:00:00 23.21 7.46 850 8.19WBBR 6/30/2010 15:00:00 24.03 7.52 856 8.4WBBR 6/30/2010 16:00:00 24.69 7.56 862 8.41WBBR 6/30/2010 17:00:00 25.1 7.57 873 8.19WBBR 6/30/2010 18:00:00 25.3 7.55 881 7.79WBBR 6/30/2010 19:00:00 25.36 7.54 887 7.42WBBR 6/30/2010 20:00:00 25.12 7.56 879 7.59WBBR 6/30/2010 21:00:00 24.64 7.55 873 7.54WBBR 6/30/2010 22:00:00 24.11 7.51 872 7.2WBBR 6/30/2010 23:00:00 23.58 7.48 872 6.89WBBR 7/1/2010 0:00:00 23.09 7.44 874 6.62WBBR 7/1/2010 1:00:00 22.6 7.41 876 6.41WBBR 7/1/2010 2:00:00 22.14 7.38 881 6.31WBBR 7/1/2010 3:00:00 21.67 7.34 892 6.22WBBR 7/1/2010 4:00:00 21.16 7.3 904 6.19WBBR 7/1/2010 5:00:00 20.55 7.26 907 6.18WBBR 7/1/2010 6:00:00 19.99 7.22 903 6.22WBBR 7/1/2010 7:00:00 19.56 7.18 897 6.25WBBR 7/1/2010 8:00:00 19.35 7.15 891 6.36WBBR 7/1/2010 9:00:00 19.46 7.15 885 6.48WBBR 7/1/2010 10:00:00 19.76 7.18 885 6.75WBBR 7/1/2010 11:00:00 20.34 7.26 884 7.25WBBR 7/1/2010 12:00:00 21.02 7.33 886 7.67WBBR 7/1/2010 13:00:00 21.94 7.42 885 8.18WBBR 7/1/2010 14:00:00 22.91 7.51 888 8.64WBBR 7/1/2010 15:00:00 23.84 7.59 893 9.02WBBR 7/1/2010 16:00:00 24.54 7.63 899 9.18WBBR 7/1/2010 17:00:00 25.06 7.67 904 9.27WBBR 7/1/2010 18:00:00 25.31 7.68 911 9.13WBBR 7/1/2010 19:00:00 25.3 7.67 915 8.9WBBR 7/1/2010 20:00:00 25.11 7.64 922 8.22WBBR 7/1/2010 21:00:00 24.86 7.61 927 7.72WBBR 7/1/2010 22:00:00 24.46 7.58 919 7.53WBBR 7/1/2010 23:00:00 23.98 7.54 917 7.1WBBR 7/2/2010 0:00:00 23.5 7.49 914 6.75WBBR 7/2/2010 1:00:00 23.05 7.45 913 6.46WBBR 7/2/2010 2:00:00 22.6 7.42 912 6.3WBBR 7/2/2010 3:00:00 22.17 7.38 913 6.18WBBR 7/2/2010 4:00:00 21.72 7.35 915 6.09WBBR 7/2/2010 5:00:00 21.25 7.31 918 6.1

West Branch DuPage River Butterfield Road Crossing Page 27 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/2/2010 6:00:00 20.77 7.27 920 6.05WBBR 7/2/2010 7:00:00 20.3 7.23 924 6.12WBBR 7/2/2010 8:00:00 20.01 7.19 929 6.11WBBR 7/2/2010 9:00:00 19.92 7.18 928 6.29WBBR 7/2/2010 10:00:00 20.19 7.19 925 6.46WBBR 7/2/2010 11:00:00 20.68 7.24 926 6.82WBBR 7/2/2010 12:00:00 21.46 7.32 926 7.38WBBR 7/2/2010 13:00:00 22.34 7.41 925 8.03WBBR 7/2/2010 14:00:00 23.31 7.51 927 8.58WBBR 7/2/2010 15:00:00 24.25 7.58 931 8.95WBBR 7/2/2010 16:00:00 25.03 7.69 936 9.15WBBR 7/2/2010 17:00:00 25.65 7.74 941 9.23WBBR 7/2/2010 18:00:00 26.01 7.75 946 8.97WBBR 7/2/2010 19:00:00 26.13 7.72 953 8.36WBBR 7/2/2010 20:00:00 26.09 7.73 951 8.34WBBR 7/2/2010 21:00:00 25.77 7.73 949 8.26WBBR 7/2/2010 22:00:00 25.29 7.69 950 7.79WBBR 7/2/2010 23:00:00 24.78 7.64 953 7.24WBBR 7/3/2010 0:00:00 24.3 7.59 954 6.76WBBR 7/3/2010 1:00:00 23.8 7.55 955 6.39WBBR 7/3/2010 2:00:00 23.38 7.5 953 6.13WBBR 7/3/2010 3:00:00 22.94 7.47 952 6WBBR 7/3/2010 4:00:00 22.52 7.44 953 5.88WBBR 7/3/2010 5:00:00 22.11 7.41 953 5.81WBBR 7/3/2010 6:00:00 21.71 7.38 954 5.77WBBR 7/3/2010 7:00:00 21.33 7.35 954 5.75WBBR 7/3/2010 8:00:00 21.06 7.32 954 5.79WBBR 7/3/2010 9:00:00 20.99 7.31 953 5.93WBBR 7/3/2010 10:00:00 21.19 7.32 955 6.12WBBR 7/3/2010 11:00:00 21.63 7.36 957 6.6WBBR 7/3/2010 12:00:00 22.38 7.43 959 7.14WBBR 7/3/2010 13:00:00 23.28 7.5 961 7.64WBBR 7/3/2010 14:00:00 24.25 7.61 963 8.5WBBR 7/3/2010 15:00:00 25.18 7.7 963 9.08WBBR 7/3/2010 16:00:00 25.97 7.77 963 9.45WBBR 7/3/2010 17:00:00 26.58 7.83 965 9.72WBBR 7/3/2010 18:00:00 26.97 7.85 967 9.69WBBR 7/3/2010 19:00:00 27.07 7.85 971 9.47WBBR 7/3/2010 20:00:00 26.89 7.81 977 8.81WBBR 7/3/2010 21:00:00 26.67 7.77 983 7.99WBBR 7/3/2010 22:00:00 26.28 7.76 978 7.9WBBR 7/3/2010 23:00:00 25.75 7.7 977 7.35WBBR 7/4/2010 0:00:00 25.28 7.65 978 6.79WBBR 7/4/2010 1:00:00 24.82 7.6 980 6.29

West Branch DuPage River Butterfield Road Crossing Page 28 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/4/2010 2:00:00 24.42 7.56 980 5.91WBBR 7/4/2010 3:00:00 24.03 7.52 979 5.72WBBR 7/4/2010 4:00:00 23.68 7.49 978 5.59WBBR 7/4/2010 5:00:00 23.36 7.47 977 5.47WBBR 7/4/2010 6:00:00 23.06 7.44 976 5.41WBBR 7/4/2010 7:00:00 22.78 7.42 974 5.36WBBR 7/4/2010 8:00:00 22.61 7.4 973 5.46WBBR 7/4/2010 9:00:00 22.73 7.39 974 5.55WBBR 7/4/2010 10:00:00 23.02 7.41 974 5.78WBBR 7/4/2010 11:00:00 23.87 7.48 975 6.39WBBR 7/4/2010 12:00:00 24.35 7.55 975 7.21WBBR 7/4/2010 13:00:00 25.18 7.62 975 7.9WBBR 7/4/2010 14:00:00 25.99 7.72 976 8.73WBBR 7/4/2010 15:00:00 26.64 7.78 977 9.13WBBR 7/4/2010 16:00:00 27.22 7.85 977 9.65WBBR 7/4/2010 17:00:00 27.58 7.89 980 9.73WBBR 7/4/2010 18:00:00 27.75 7.91 980 9.59WBBR 7/4/2010 19:00:00 27.81 7.89 984 9.03WBBR 7/4/2010 20:00:00 27.75 7.85 989 8.21WBBR 7/4/2010 21:00:00 27.61 7.81 992 7.48WBBR 7/4/2010 22:00:00 27.4 7.8 989 7.49WBBR 7/4/2010 23:00:00 27.11 7.78 990 7.23WBBR 7/5/2010 0:00:00 26.71 7.72 993 6.66WBBR 7/5/2010 1:00:00 26.34 7.66 996 6.02WBBR 7/5/2010 2:00:00 26.02 7.62 998 5.58WBBR 7/5/2010 3:00:00 25.72 7.58 998 5.3WBBR 7/5/2010 4:00:00 25.43 7.55 999 5.09WBBR 7/5/2010 5:00:00 25.17 7.53 999 4.95WBBR 7/5/2010 6:00:00 24.96 7.51 998 4.79WBBR 7/5/2010 7:00:00 24.74 7.48 996 4.76WBBR 7/5/2010 8:00:00 24.61 7.48 993 4.82WBBR 7/5/2010 9:00:00 24.72 7.48 992 4.96WBBR 7/5/2010 10:00:00 24.87 7.49 992 5.33WBBR 7/5/2010 11:00:00 25.24 7.53 992 5.82WBBR 7/5/2010 12:00:00 25.72 7.6 992 6.71WBBR 7/5/2010 13:00:00 26.39 7.67 993 7.57WBBR 7/5/2010 14:00:00 27.18 7.75 992 8.33WBBR 7/5/2010 15:00:00 27.83 7.84 991 9.08WBBR 7/5/2010 16:00:00 28.44 7.92 991 9.69WBBR 7/5/2010 17:00:00 28.88 7.98 992 10.16WBBR 7/5/2010 18:00:00 29.09 8.03 993 10.25WBBR 7/5/2010 19:00:00 29.02 8.04 995 9.97WBBR 7/5/2010 20:00:00 28.74 8.01 1000 9WBBR 7/5/2010 21:00:00 28.44 7.97 1002 8.81

West Branch DuPage River Butterfield Road Crossing Page 29 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/5/2010 22:00:00 27.99 7.9 1005 8.26WBBR 7/5/2010 23:00:00 27.5 7.81 1008 7.3WBBR 7/6/2010 0:00:00 27.01 7.73 1012 6.34WBBR 7/6/2010 1:00:00 26.58 7.67 1015 5.73WBBR 7/6/2010 2:00:00 26.15 7.62 1018 5.28WBBR 7/6/2010 3:00:00 25.72 7.58 1020 5WBBR 7/6/2010 4:00:00 25.35 7.55 1022 4.83WBBR 7/6/2010 5:00:00 25 7.53 1024 4.76WBBR 7/6/2010 6:00:00 24.68 7.5 1024 4.69WBBR 7/6/2010 7:00:00 24.42 7.48 1025 4.63WBBR 7/6/2010 8:00:00 24.23 7.47 1025 4.62WBBR 7/6/2010 9:00:00 24.29 7.47 1023 4.89WBBR 7/6/2010 10:00:00 24.64 7.49 1021 5.23WBBR 7/6/2010 11:00:00 24.76 7.52 1018 5.69WBBR 7/6/2010 12:00:00 25.27 7.55 1016 6.27WBBR 7/6/2010 13:00:00 26.05 7.65 1016 7.26WBBR 7/6/2010 14:00:00 26.96 7.75 1017 8.26WBBR 7/6/2010 15:00:00 27.22 7.81 1016 8.92WBBR 7/6/2010 16:00:00 27.84 7.91 1017 9.78WBBR 7/6/2010 17:00:00 28.44 7.99 1017 10.44WBBR 7/6/2010 18:00:00 28.5 7.99 1016 10.14WBBR 7/6/2010 19:00:00 28.36 7.97 1018 9.75WBBR 7/6/2010 20:00:00 28.32 7.97 1018 9.32WBBR 7/6/2010 21:00:00 28.21 7.96 1012 8.96WBBR 7/6/2010 22:00:00 28 7.9 1016 7.83WBBR 7/6/2010 23:00:00 27.63 7.82 1013 7.09WBBR 7/7/2010 0:00:00 27.06 7.72 1006 6.32WBBR 7/7/2010 1:00:00 26.59 7.66 1003 5.79WBBR 7/7/2010 2:00:00 26.22 7.61 998 5.28WBBR 7/7/2010 3:00:00 25.91 7.53 986 4.73WBBR 7/7/2010 4:00:00 25.66 7.49 979 4.38WBBR 7/7/2010 5:00:00 25.35 7.44 966 4.04WBBR 7/7/2010 6:00:00 25.05 7.39 961 3.7WBBR 7/7/2010 7:00:00 24.73 7.35 963 3.64WBBR 7/7/2010 8:00:00 24.51 7.32 969 3.71WBBR 7/7/2010 9:00:00 24.51 7.31 977 3.9WBBR 7/7/2010 10:00:00 24.73 7.31 986 4.1WBBR 7/7/2010 11:00:00 25.13 7.35 990 4.79WBBR 7/7/2010 12:00:00 25.91 7.42 994 5.63WBBR 7/7/2010 13:00:00 26.72 7.51 993 6.77WBBR 7/7/2010 14:00:00 27.75 7.62 989 7.96WBBR 7/7/2010 15:00:00 28.71 7.72 987 8.86WBBR 7/7/2010 16:00:00 29.57 7.81 984 9.49WBBR 7/7/2010 17:00:00 29.96 7.86 981 9.71

West Branch DuPage River Butterfield Road Crossing Page 30 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/7/2010 18:00:00 30 7.88 985 9.38WBBR 7/7/2010 19:00:00 29.89 7.88 994 8.63WBBR 7/7/2010 20:00:00 29.63 7.86 990 8.4WBBR 7/7/2010 21:00:00 29.19 7.81 989 8.07WBBR 7/7/2010 22:00:00 28.74 7.75 992 7.35WBBR 7/7/2010 23:00:00 28.32 7.7 998 6.5WBBR 7/8/2010 0:00:00 27.95 7.65 1002 5.79WBBR 7/8/2010 1:00:00 27.56 7.61 1003 5.36WBBR 7/8/2010 2:00:00 27.19 7.59 1007 5.02WBBR 7/8/2010 3:00:00 26.88 7.56 1007 4.76WBBR 7/8/2010 4:00:00 26.56 7.53 1005 4.55WBBR 7/8/2010 5:00:00 26.23 7.5 1007 4.4WBBR 7/8/2010 6:00:00 25.91 7.48 1013 4.27WBBR 7/8/2010 7:00:00 25.63 7.45 1017 4.13WBBR 7/8/2010 8:00:00 25.4 7.43 1010 4.01WBBR 7/8/2010 9:00:00 25.2 7.39 987 3.69WBBR 7/8/2010 10:00:00 25.19 7.39 977 4.04WBBR 7/8/2010 11:00:00 25.46 7.44 976 4.61WBBR 7/8/2010 12:00:00 25.94 7.48 978 5.32WBBR 7/8/2010 13:00:00 26.54 7.57 971 6.47WBBR 7/8/2010 14:00:00 27.36 7.67 966 7.73WBBR 7/8/2010 15:00:00 28.05 7.78 966 8.85WBBR 7/8/2010 16:00:00 28.76 7.87 967 9.77WBBR 7/8/2010 17:00:00 29.33 7.96 963 10.36WBBR 7/8/2010 18:00:00 29.68 8 961 10.43WBBR 7/8/2010 19:00:00 29.62 7.99 960 9.97WBBR 7/8/2010 20:00:00 29.4 7.94 965 8.97WBBR 7/8/2010 21:00:00 29.1 7.9 959 8.59WBBR 7/8/2010 22:00:00 28.65 7.83 951 7.89WBBR 7/8/2010 23:00:00 28.27 7.76 949 7.05WBBR 7/9/2010 0:00:00 27.91 7.69 949 6.38WBBR 7/9/2010 1:00:00 27.55 7.64 950 5.8WBBR 7/9/2010 2:00:00 27.21 7.6 949 5.37WBBR 7/9/2010 3:00:00 26.91 7.56 943 5.06WBBR 7/9/2010 4:00:00 26.61 7.53 940 4.83WBBR 7/9/2010 5:00:00 26.31 7.5 940 4.67WBBR 7/9/2010 6:00:00 25.97 7.48 942 4.53WBBR 7/9/2010 7:00:00 25.65 7.46 944 4.43WBBR 7/9/2010 8:00:00 25.38 7.45 947 4.46WBBR 7/9/2010 9:00:00 25.32 7.45 948 4.68WBBR 7/9/2010 10:00:00 25.46 7.47 946 5.1WBBR 7/9/2010 11:00:00 25.73 7.51 945 5.67WBBR 7/9/2010 12:00:00 26.26 7.58 943 6.54WBBR 7/9/2010 13:00:00 26.92 7.66 942 7.56

West Branch DuPage River Butterfield Road Crossing Page 31 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/9/2010 14:00:00 27.67 7.77 939 8.76WBBR 7/9/2010 15:00:00 28.41 7.88 938 9.78WBBR 7/9/2010 16:00:00 29.02 7.97 938 10.6WBBR 7/9/2010 17:00:00 29.43 8.03 942 10.99WBBR 7/9/2010 18:00:00 29.59 8.06 944 10.92WBBR 7/9/2010 19:00:00 29.65 8.06 949 10.62WBBR 7/9/2010 20:00:00 29.49 8.04 954 9.98WBBR 7/9/2010 21:00:00 29.09 7.98 961 8.9WBBR 7/9/2010 22:00:00 28.65 7.92 964 8.24WBBR 7/9/2010 23:00:00 28.09 7.84 966 7.5WBBR 7/10/2010 0:00:00 27.48 7.75 969 6.69WBBR 7/10/2010 1:00:00 26.87 7.69 973 6.08WBBR 7/10/2010 2:00:00 26.31 7.63 977 5.62WBBR 7/10/2010 3:00:00 25.82 7.58 979 5.26WBBR 7/10/2010 4:00:00 25.36 7.54 980 5.02WBBR 7/10/2010 5:00:00 24.98 7.51 979 4.85WBBR 7/10/2010 6:00:00 24.59 7.48 978 4.73WBBR 7/10/2010 7:00:00 24.28 7.46 977 4.68WBBR 7/10/2010 8:00:00 24.16 7.43 978 4.73WBBR 7/10/2010 9:00:00 24.18 7.43 977 4.87WBBR 7/10/2010 10:00:00 24.34 7.44 980 5.18WBBR 7/10/2010 11:00:00 24.74 7.48 982 5.65WBBR 7/10/2010 12:00:00 25.33 7.54 981 6.42WBBR 7/10/2010 13:00:00 25.97 7.63 978 7.39WBBR 7/10/2010 14:00:00 26.71 7.72 974 8.5WBBR 7/10/2010 15:00:00 27.49 7.84 970 9.71WBBR 7/10/2010 16:00:00 28.23 7.93 966 10.17WBBR 7/10/2010 17:00:00 28.82 8.04 965 10.97WBBR 7/10/2010 18:00:00 29.03 8.08 967 10.95WBBR 7/10/2010 19:00:00 29.02 8.09 970 10.76WBBR 7/10/2010 20:00:00 28.88 8.09 974 10.4WBBR 7/10/2010 21:00:00 28.79 8.08 976 9.84WBBR 7/10/2010 22:00:00 28.57 8.03 981 8.88WBBR 7/10/2010 23:00:00 28.19 7.96 984 8.3WBBR 7/11/2010 0:00:00 27.69 7.87 986 7.43WBBR 7/11/2010 1:00:00 27.22 7.79 988 6.59WBBR 7/11/2010 2:00:00 26.75 7.72 993 5.96WBBR 7/11/2010 3:00:00 26.26 7.66 994 5.47WBBR 7/11/2010 4:00:00 25.78 7.6 997 5.12WBBR 7/11/2010 5:00:00 25.32 7.56 998 4.9WBBR 7/11/2010 6:00:00 24.9 7.53 999 4.79WBBR 7/11/2010 7:00:00 24.52 7.49 998 4.68WBBR 7/11/2010 8:00:00 24.34 7.47 1002 4.73WBBR 7/11/2010 9:00:00 24.3 7.45 1000 4.79

West Branch DuPage River Butterfield Road Crossing Page 32 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/11/2010 10:00:00 24.4 7.46 1000 5.12WBBR 7/11/2010 11:00:00 24.5 7.47 997 5.42WBBR 7/11/2010 12:00:00 24.92 7.53 995 6.2WBBR 7/11/2010 13:00:00 25.26 7.59 994 7.15WBBR 7/11/2010 14:00:00 25.58 7.68 996 8.24WBBR 7/11/2010 15:00:00 25.95 7.78 994 9.19WBBR 7/11/2010 16:00:00 26.45 7.87 994 10.06WBBR 7/11/2010 17:00:00 26.88 7.96 992 10.72WBBR 7/11/2010 18:00:00 26.9 8 989 10.57WBBR 7/11/2010 19:00:00 26.89 8.06 987 10.67WBBR 7/11/2010 20:00:00 26.8 8.06 984 10.38WBBR 7/11/2010 21:00:00 26.47 7.99 975 9.14WBBR 7/11/2010 22:00:00 26.1 7.88 970 7.88WBBR 7/11/2010 23:00:00 25.65 7.77 962 6.96WBBR 7/12/2010 0:00:00 25.01 7.66 939 6.21WBBR 7/12/2010 1:00:00 24.48 7.56 918 5.58WBBR 7/12/2010 2:00:00 24.15 7.51 863 5.48WBBR 7/12/2010 3:00:00 23.75 7.47 855 5.43WBBR 7/12/2010 4:00:00 23.09 7.35 816 5.18WBBR 7/12/2010 5:00:00 22.77 7.31 835 5.12WBBR 7/12/2010 6:00:00 22.65 7.28 781 5.1WBBR 7/12/2010 7:00:00 22.51 7.22 698 4.65WBBR 7/12/2010 8:00:00 22.44 7.18 641 4.66WBBR 7/12/2010 9:00:00 22.53 7.21 638 5.01WBBR 7/12/2010 10:00:00 22.92 7.27 648 5.36WBBR 7/12/2010 11:00:00 23.52 7.33 655 5.65WBBR 7/12/2010 12:00:00 24.27 7.38 666 5.95WBBR 7/12/2010 13:00:00 24.86 7.42 654 6.25WBBR 7/12/2010 14:00:00 25.58 7.48 635 6.56WBBR 7/12/2010 15:00:00 25.98 7.51 635 6.74WBBR 7/12/2010 16:00:00 26.29 7.55 641 7.01WBBR 7/12/2010 17:00:00 26.58 7.6 667 7.19WBBR 7/12/2010 18:00:00 26.64 7.62 688 7.24WBBR 7/12/2010 19:00:00 26.5 7.62 700 7.13WBBR 7/12/2010 20:00:00 26.34 7.6 714 6.82WBBR 7/12/2010 21:00:00 26.17 7.57 718 6.52WBBR 7/12/2010 22:00:00 26.03 7.54 722 6.2WBBR 7/12/2010 23:00:00 25.78 7.51 722 5.94WBBR 7/13/2010 0:00:00 25.58 7.49 725 5.73WBBR 7/13/2010 1:00:00 25.39 7.46 727 5.58WBBR 7/13/2010 2:00:00 25.2 7.44 730 5.45WBBR 7/13/2010 3:00:00 25.01 7.42 732 5.35WBBR 7/13/2010 4:00:00 24.88 7.41 738 5.25WBBR 7/13/2010 5:00:00 24.71 7.39 736 5.18

West Branch DuPage River Butterfield Road Crossing Page 33 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/13/2010 6:00:00 24.6 7.38 740 5.11WBBR 7/13/2010 7:00:00 24.47 7.37 738 5.08WBBR 7/13/2010 8:00:00 24.39 7.37 733 5.17WBBR 7/13/2010 9:00:00 24.45 7.38 742 5.36WBBR 7/13/2010 10:00:00 24.71 7.41 742 5.73WBBR 7/13/2010 11:00:00 25.23 7.48 748 6.31WBBR 7/13/2010 12:00:00 25.83 7.56 749 7.05WBBR 7/13/2010 13:00:00 26.68 7.66 755 7.91WBBR 7/13/2010 14:00:00 27.5 7.76 764 8.73WBBR 7/13/2010 15:00:00 28.18 7.85 772 9.29WBBR 7/13/2010 16:00:00 28.54 7.92 772 9.66WBBR 7/13/2010 17:00:00 28.59 7.93 777 9.5WBBR 7/13/2010 18:00:00 28.63 7.94 770 9.44WBBR 7/13/2010 19:00:00 28.52 7.91 782 8.9WBBR 7/13/2010 20:00:00 28.11 7.87 779 8.5WBBR 7/13/2010 21:00:00 27.65 7.8 780 7.87WBBR 7/13/2010 22:00:00 27.3 7.74 782 7.3WBBR 7/13/2010 23:00:00 26.93 7.69 785 6.78WBBR 7/14/2010 0:00:00 26.49 7.63 785 6.31WBBR 7/14/2010 1:00:00 26.06 7.58 787 5.95WBBR 7/14/2010 2:00:00 25.67 7.53 788 5.68WBBR 7/14/2010 3:00:00 25.32 7.5 790 5.49WBBR 7/14/2010 4:00:00 24.95 7.47 792 5.36WBBR 7/14/2010 5:00:00 24.59 7.44 793 5.27WBBR 7/14/2010 6:00:00 24.27 7.41 797 5.2WBBR 7/14/2010 7:00:00 24.02 7.39 798 5.15WBBR 7/14/2010 8:00:00 23.86 7.38 796 5.21WBBR 7/14/2010 9:00:00 23.95 7.39 802 5.41WBBR 7/14/2010 10:00:00 24.28 7.42 798 5.78WBBR 7/14/2010 11:00:00 24.79 7.47 805 6.37WBBR 7/14/2010 12:00:00 25.47 7.55 806 7.18WBBR 7/14/2010 13:00:00 26.09 7.63 811 7.89WBBR 7/14/2010 14:00:00 26.75 7.72 813 8.62WBBR 7/14/2010 15:00:00 27.44 7.78 817 8.96WBBR 7/14/2010 16:00:00 28.21 7.86 825 9.67WBBR 7/14/2010 17:00:00 28.78 7.96 827 10.11WBBR 7/14/2010 18:00:00 29.15 7.99 834 9.98WBBR 7/14/2010 19:00:00 29.22 7.96 839 9.58WBBR 7/14/2010 20:00:00 29.12 7.93 849 8.88WBBR 7/14/2010 21:00:00 28.97 7.89 844 8.39WBBR 7/14/2010 22:00:00 28.65 7.82 840 7.61WBBR 7/14/2010 23:00:00 28.32 7.74 838 6.9WBBR 7/15/2010 0:00:00 27.98 7.68 839 6.26WBBR 7/15/2010 1:00:00 27.66 7.62 841 5.7

West Branch DuPage River Butterfield Road Crossing Page 34 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/15/2010 2:00:00 27.37 7.59 841 5.3WBBR 7/15/2010 3:00:00 27.06 7.55 845 5.06WBBR 7/15/2010 4:00:00 26.78 7.52 848 4.84WBBR 7/15/2010 5:00:00 26.51 7.5 850 4.67WBBR 7/15/2010 6:00:00 26.26 7.48 850 4.58WBBR 7/15/2010 7:00:00 26.05 7.46 854 4.46WBBR 7/15/2010 8:00:00 25.92 7.47 856 4.51WBBR 7/15/2010 9:00:00 25.9 7.46 855 4.58WBBR 7/15/2010 10:00:00 26.03 7.48 855 4.93WBBR 7/15/2010 11:00:00 26.36 7.53 856 5.48WBBR 7/15/2010 12:00:00 26.89 7.6 859 6.3WBBR 7/15/2010 13:00:00 27.41 7.68 859 7.23WBBR 7/15/2010 14:00:00 28.12 7.79 863 8.19WBBR 7/15/2010 15:00:00 28.79 7.88 865 8.96WBBR 7/15/2010 16:00:00 29.37 8 871 9.52WBBR 7/15/2010 17:00:00 29.87 8.06 878 9.64WBBR 7/15/2010 18:00:00 30.04 8.08 885 9.42WBBR 7/15/2010 19:00:00 29.98 8.07 894 9.04WBBR 7/15/2010 20:00:00 29.75 8.06 894 8.79WBBR 7/15/2010 21:00:00 29.37 8.01 898 8.21WBBR 7/15/2010 22:00:00 28.91 7.94 894 7.69WBBR 7/15/2010 23:00:00 28.42 7.86 894 6.92WBBR 7/16/2010 0:00:00 27.87 7.79 897 6.24WBBR 7/16/2010 1:00:00 27.32 7.73 899 5.71WBBR 7/16/2010 2:00:00 26.75 7.68 900 5.31WBBR 7/16/2010 3:00:00 26.23 7.64 901 5.04WBBR 7/16/2010 4:00:00 25.76 7.6 901 4.84WBBR 7/16/2010 5:00:00 25.32 7.57 901 4.68WBBR 7/16/2010 6:00:00 24.88 7.54 904 4.61WBBR 7/16/2010 7:00:00 24.52 7.51 906 4.53WBBR 7/16/2010 8:00:00 24.22 7.48 909 4.62WBBR 7/16/2010 9:00:00 24.15 7.47 910 4.83WBBR 7/16/2010 10:00:00 24.36 7.49 911 5.13WBBR 7/16/2010 11:00:00 24.76 7.53 910 5.66WBBR 7/16/2010 12:00:00 25.33 7.58 910 6.26WBBR 7/16/2010 13:00:00 26.13 7.68 912 7.25WBBR 7/16/2010 14:00:00 27 7.78 912 8.26WBBR 7/16/2010 15:00:00 27.85 7.88 913 9WBBR 7/16/2010 16:00:00 28.65 7.98 912 9.72WBBR 7/16/2010 17:00:00 29.26 8.07 914 10.25WBBR 7/16/2010 18:00:00 29.61 8.11 920 10.35WBBR 7/16/2010 19:00:00 29.72 8.14 925 10.19WBBR 7/16/2010 20:00:00 29.59 8.12 928 9.84WBBR 7/16/2010 21:00:00 29.31 8.07 933 8.86

West Branch DuPage River Butterfield Road Crossing Page 35 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/16/2010 22:00:00 28.98 8.01 933 8.31WBBR 7/16/2010 23:00:00 28.49 7.91 934 7.45WBBR 7/17/2010 0:00:00 27.98 7.82 936 6.54WBBR 7/17/2010 1:00:00 27.5 7.75 939 5.95WBBR 7/17/2010 2:00:00 27 7.69 942 5.39WBBR 7/17/2010 3:00:00 26.52 7.64 945 5WBBR 7/17/2010 4:00:00 26.08 7.6 948 4.73WBBR 7/17/2010 5:00:00 25.67 7.57 950 4.53WBBR 7/17/2010 6:00:00 25.31 7.54 951 4.38WBBR 7/17/2010 7:00:00 25 7.51 951 4.32WBBR 7/17/2010 8:00:00 24.79 7.49 951 4.4WBBR 7/17/2010 9:00:00 24.78 7.48 952 4.52WBBR 7/17/2010 10:00:00 25.02 7.5 952 4.82WBBR 7/17/2010 11:00:00 25.5 7.53 951 5.23WBBR 7/17/2010 12:00:00 26.04 7.58 954 5.79WBBR 7/17/2010 13:00:00 26.76 7.66 954 6.68WBBR 7/17/2010 14:00:00 27.62 7.75 955 7.61WBBR 7/17/2010 15:00:00 28.53 7.85 955 8.6WBBR 7/17/2010 16:00:00 29.39 7.96 954 9.47WBBR 7/17/2010 17:00:00 30.05 8.06 954 10.11WBBR 7/17/2010 18:00:00 30.47 8.11 955 10.26WBBR 7/17/2010 19:00:00 30.62 8.13 956 10.14WBBR 7/17/2010 20:00:00 30.57 8.13 960 9.76WBBR 7/17/2010 21:00:00 30.37 8.11 960 9.13WBBR 7/17/2010 22:00:00 30.04 8.05 965 8.31WBBR 7/17/2010 23:00:00 29.56 7.98 970 7.77WBBR 7/18/2010 0:00:00 29.04 7.9 973 6.71WBBR 7/18/2010 1:00:00 28.52 7.82 977 5.92WBBR 7/18/2010 2:00:00 28.04 7.76 979 5.36WBBR 7/18/2010 3:00:00 27.49 7.7 982 4.94WBBR 7/18/2010 4:00:00 26.95 7.66 984 4.66WBBR 7/18/2010 5:00:00 26.52 7.62 985 4.43WBBR 7/18/2010 6:00:00 26.11 7.59 986 4.35WBBR 7/18/2010 7:00:00 25.75 7.55 986 4.23WBBR 7/18/2010 8:00:00 25.46 7.53 987 4.17WBBR 7/18/2010 9:00:00 25.32 7.51 988 4.23WBBR 7/18/2010 10:00:00 25.52 7.51 988 4.48WBBR 7/18/2010 11:00:00 25.78 7.53 986 4.78WBBR 7/18/2010 12:00:00 26.27 7.57 984 5.44WBBR 7/18/2010 13:00:00 26.91 7.63 984 6.26WBBR 7/18/2010 14:00:00 27.56 7.72 983 7.23WBBR 7/18/2010 15:00:00 28.06 7.81 982 8.3WBBR 7/18/2010 16:00:00 28.6 7.9 982 9.04WBBR 7/18/2010 17:00:00 29.04 7.98 978 9.55

West Branch DuPage River Butterfield Road Crossing Page 36 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/18/2010 18:00:00 29.48 8.06 976 9.91WBBR 7/18/2010 19:00:00 29.59 8.09 975 9.72WBBR 7/18/2010 20:00:00 29.62 8.12 976 9.55WBBR 7/18/2010 21:00:00 29.6 8.13 978 9.16WBBR 7/18/2010 22:00:00 29.4 8.09 980 8.45WBBR 7/18/2010 23:00:00 29.07 8.02 981 7.51WBBR 7/19/2010 0:00:00 28.64 7.93 982 6.76WBBR 7/19/2010 1:00:00 28.14 7.83 988 5.99WBBR 7/19/2010 2:00:00 27.62 7.74 991 5.38WBBR 7/19/2010 3:00:00 27.11 7.68 996 4.93WBBR 7/19/2010 4:00:00 26.57 7.63 999 4.59WBBR 7/19/2010 5:00:00 26.12 7.6 1001 4.32WBBR 7/19/2010 6:00:00 25.67 7.57 1004 4.21WBBR 7/19/2010 7:00:00 25.3 7.54 1007 4.14WBBR 7/19/2010 8:00:00 25.11 7.52 1009 4.2WBBR 7/19/2010 9:00:00 25.09 7.51 1006 4.27WBBR 7/19/2010 10:00:00 25.23 7.51 1006 4.38WBBR 7/19/2010 11:00:00 25.45 7.52 1005 4.65WBBR 7/19/2010 12:00:00 25.72 7.55 1005 5.24WBBR 7/19/2010 13:00:00 25.98 7.6 1003 6.05WBBR 7/19/2010 14:00:00 26.28 7.65 1000 6.77WBBR 7/19/2010 15:00:00 26.59 7.72 996 7.65WBBR 7/19/2010 16:00:00 26.74 7.79 986 8.38WBBR 7/19/2010 17:00:00 26.9 7.87 985 9.14WBBR 7/19/2010 18:00:00 27 7.93 983 9.2WBBR 7/19/2010 19:00:00 27.08 7.95 983 8.93WBBR 7/19/2010 20:00:00 27.09 7.97 989 8.98WBBR 7/19/2010 21:00:00 26.92 7.95 985 8.56WBBR 7/19/2010 22:00:00 26.7 7.9 990 8.13WBBR 7/19/2010 23:00:00 26.42 7.85 981 7.56WBBR 7/20/2010 0:00:00 26.1 7.79 988 6.98WBBR 7/20/2010 1:00:00 25.78 7.72 994 6.36WBBR 7/20/2010 2:00:00 25.43 7.65 998 5.8WBBR 7/20/2010 3:00:00 25.07 7.6 1002 5.37WBBR 7/20/2010 4:00:00 24.76 7.56 992 5.08WBBR 7/20/2010 5:00:00 24.44 7.52 1003 4.86WBBR 7/20/2010 6:00:00 24.14 7.5 1008 4.67WBBR 7/20/2010 7:00:00 23.93 7.48 1012 4.58WBBR 7/20/2010 8:00:00 23.76 7.46 1015 4.57WBBR 7/20/2010 9:00:00 23.6 7.46 1022 4.62WBBR 7/20/2010 10:00:00 23.46 7.44 1022 4.64WBBR 7/20/2010 11:00:00 23.42 7.43 1023 4.63WBBR 7/20/2010 12:00:00 23.51 7.44 1027 4.91WBBR 7/20/2010 13:00:00 23.79 7.46 1022 5.46

West Branch DuPage River Butterfield Road Crossing Page 37 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/20/2010 14:00:00 24.32 7.5 1017 5.84WBBR 7/20/2010 15:00:00 24.99 7.55 1015 6.41WBBR 7/20/2010 16:00:00 25.37 7.62 1013 7.1WBBR 7/20/2010 17:00:00 25.68 7.68 1014 7.72WBBR 7/20/2010 18:00:00 26.19 7.78 1002 8.54WBBR 7/20/2010 19:00:00 26.5 7.87 1003 9.25WBBR 7/20/2010 20:00:00 26.67 7.93 1001 9.6WBBR 7/20/2010 21:00:00 26.77 7.98 1006 9.65WBBR 7/20/2010 22:00:00 26.8 7.97 1009 9.24WBBR 7/20/2010 23:00:00 26.76 7.93 1004 8.45WBBR 7/21/2010 0:00:00 26.67 7.88 1008 7.9WBBR 7/21/2010 1:00:00 26.41 7.81 1017 7.16WBBR 7/21/2010 2:00:00 26.05 7.72 1004 6.38WBBR 7/21/2010 3:00:00 25.71 7.65 1016 5.8WBBR 7/21/2010 4:00:00 25.36 7.6 1017 5.36WBBR 7/21/2010 5:00:00 25.02 7.56 914 5.07WBBR 7/21/2010 6:00:00 24.71 7.52 1017 4.82WBBR 7/21/2010 7:00:00 24.42 7.49 1019 4.71WBBR 7/21/2010 8:00:00 24.28 7.48 1017 4.75WBBR 7/21/2010 9:00:00 24.34 7.47 1019 4.76WBBR 7/21/2010 10:00:00 24.59 7.49 1019 4.84WBBR 7/21/2010 11:00:00 24.87 7.5 1021 5.03WBBR 7/21/2010 12:00:00 25.29 7.53 1018 5.37WBBR 7/21/2010 13:00:00 25.93 7.58 1018 5.95WBBR 7/21/2010 14:00:00 26.57 7.65 1018 6.72WBBR 7/21/2010 15:00:00 27.33 7.75 1018 7.9WBBR 7/21/2010 16:00:00 27.88 7.83 1015 8.63WBBR 7/21/2010 17:00:00 28.55 7.94 1008 9.36WBBR 7/21/2010 18:00:00 29.04 8.03 1005 9.86WBBR 7/21/2010 19:00:00 29.23 8.07 988 9.8WBBR 7/21/2010 20:00:00 29.31 8.11 999 9.7WBBR 7/21/2010 21:00:00 29.22 8.14 1008 9.82WBBR 7/21/2010 22:00:00 29.05 8.14 1010 9.42WBBR 7/21/2010 23:00:00 28.85 8.1 1008 8.69WBBR 7/22/2010 0:00:00 28.5 8.04 1005 7.9WBBR 7/22/2010 1:00:00 28.06 7.94 1005 7.04WBBR 7/22/2010 2:00:00 27.61 7.85 1005 6.26WBBR 7/22/2010 3:00:00 27.14 7.77 1003 5.66WBBR 7/22/2010 4:00:00 26.66 7.7 1003 5.25WBBR 7/22/2010 5:00:00 26.18 7.64 1003 4.94WBBR 7/22/2010 6:00:00 25.73 7.59 1004 4.72WBBR 7/22/2010 7:00:00 25.36 7.56 1004 4.57WBBR 7/22/2010 8:00:00 25.09 7.53 1007 4.54WBBR 7/22/2010 9:00:00 24.86 7.5 1012 4.45

West Branch DuPage River Butterfield Road Crossing Page 38 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/22/2010 10:00:00 23.99 7.61 1083 4.65WBBR 7/22/2010 11:00:00 23.92 7.61 1085 4.68WBBR 7/22/2010 12:00:00 24 7.63 1076 5.05WBBR 7/22/2010 13:00:00 24.22 7.66 1080 5.57WBBR 7/22/2010 14:00:00 24.55 7.69 1080 6.14WBBR 7/22/2010 15:00:00 25.03 7.69 1074 6.8WBBR 7/22/2010 16:00:00 25.48 7.77 1062 7.55WBBR 7/22/2010 17:00:00 25.91 7.82 1048 8WBBR 7/22/2010 18:00:00 26.1 7.92 1047 8.62WBBR 7/24/2010 2:00:00 25.88 7.8 945 5.97WBBR 7/24/2010 3:00:00 24.87 7.69 844 6.08WBBR 7/24/2010 4:00:00 23.7 7.54 586 6.12WBBR 7/24/2010 5:00:00 23.15 7.48 483 6.53WBBR 7/24/2010 6:00:00 22.79 7.42 412 6.66WBBR 7/24/2010 7:00:00 22.49 7.34 366 6.6WBBR 7/24/2010 8:00:00 22.19 7.28 318 6.41WBBR 7/24/2010 20:00:00 23.09 7.05 308 5.39WBBR 7/24/2010 21:00:00 23.12 7.05 309 5.24WBBR 7/24/2010 22:00:00 23.15 7.03 312 5.13WBBR 7/24/2010 23:00:00 23.19 7.04 305 5.04WBBR 7/25/2010 0:00:00 23.21 7.04 314 4.97WBBR 7/25/2010 1:00:00 23.23 7.03 313 4.94WBBR 7/25/2010 2:00:00 23.2 7.04 339 4.9WBBR 7/25/2010 4:00:00 23.25 7.02 319 4.8WBBR 7/25/2010 5:00:00 23.3 7.03 302 4.77WBBR 7/25/2010 6:00:00 23.25 7.05 322 4.75WBBR 7/25/2010 7:00:00 23.28 7.05 307 4.74WBBR 7/25/2010 8:00:00 23.23 7.06 326 4.74WBBR 7/25/2010 9:00:00 23.27 7.06 330 4.76WBBR 7/25/2010 10:00:00 23.41 7.07 328 4.81WBBR 7/25/2010 11:00:00 23.58 7.09 329 4.89WBBR 7/25/2010 12:00:00 23.76 7.11 334 4.99WBBR 7/25/2010 13:00:00 23.94 7.13 341 5.11WBBR 7/25/2010 14:00:00 24.14 7.14 344 5.23WBBR 7/25/2010 15:00:00 24.31 7.16 350 5.35WBBR 7/25/2010 16:00:00 24.45 7.17 352 5.45WBBR 7/25/2010 17:00:00 24.52 7.21 360 5.52WBBR 7/25/2010 18:00:00 24.56 7.21 371 5.55WBBR 7/25/2010 19:00:00 24.53 7.21 370 5.5WBBR 7/25/2010 20:00:00 24.49 7.21 375 5.4WBBR 7/25/2010 21:00:00 24.43 7.2 380 5.27WBBR 7/25/2010 22:00:00 24.36 7.19 385 5.18WBBR 7/25/2010 23:00:00 24.28 7.18 391 5.09WBBR 7/26/2010 0:00:00 24.17 7.18 400 4.98

West Branch DuPage River Butterfield Road Crossing Page 39 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/26/2010 1:00:00 24.06 7.18 401 4.95WBBR 7/26/2010 2:00:00 23.92 7.2 409 4.86WBBR 7/26/2010 3:00:00 23.76 7.17 418 4.79WBBR 7/26/2010 4:00:00 23.6 7.18 421 4.77WBBR 7/26/2010 5:00:00 23.43 7.19 423 4.72WBBR 7/26/2010 6:00:00 23.28 7.17 421 4.73WBBR 7/26/2010 7:00:00 23.1 7.18 426 4.7WBBR 7/26/2010 8:00:00 22.99 7.19 432 4.77WBBR 7/26/2010 9:00:00 23 7.2 430 4.89WBBR 7/26/2010 10:00:00 23.06 7.21 440 5.05WBBR 7/26/2010 11:00:00 23.21 7.23 444 5.24WBBR 7/26/2010 12:00:00 23.44 7.26 444 5.45WBBR 7/26/2010 13:00:00 23.57 7.27 455 5.58WBBR 7/26/2010 14:00:00 23.83 7.29 461 5.77WBBR 7/26/2010 15:00:00 24.05 7.32 462 5.88WBBR 7/26/2010 16:00:00 24.2 7.32 463 5.96WBBR 7/26/2010 17:00:00 24.35 7.34 474 5.99WBBR 7/26/2010 18:00:00 24.36 7.33 471 5.87WBBR 7/26/2010 19:00:00 24.41 7.32 473 5.79WBBR 7/26/2010 20:00:00 24.44 7.32 479 5.66WBBR 7/26/2010 21:00:00 24.42 7.31 486 5.47WBBR 7/26/2010 22:00:00 24.36 7.3 486 5.3WBBR 7/26/2010 23:00:00 24.29 7.29 497 5.16WBBR 7/27/2010 0:00:00 24.21 7.28 496 5.04WBBR 7/27/2010 1:00:00 24.1 7.26 510 4.94WBBR 7/27/2010 2:00:00 24 7.27 504 4.85WBBR 7/27/2010 3:00:00 23.83 7.26 530 4.83WBBR 7/27/2010 4:00:00 23.78 7.25 505 4.74WBBR 7/27/2010 5:00:00 23.62 7.25 524 4.71WBBR 7/27/2010 6:00:00 23.49 7.27 527 4.7WBBR 7/27/2010 7:00:00 23.41 7.26 516 4.7WBBR 7/27/2010 8:00:00 23.28 7.25 533 4.79WBBR 7/27/2010 9:00:00 23.34 7.27 528 4.93WBBR 7/27/2010 10:00:00 23.53 7.29 525 5.15WBBR 7/27/2010 11:00:00 23.86 7.31 521 5.44WBBR 7/27/2010 12:00:00 24.11 7.33 537 5.69WBBR 7/27/2010 13:00:00 24.49 7.37 547 5.95WBBR 7/27/2010 14:00:00 24.63 7.38 548 6.04WBBR 7/27/2010 15:00:00 25.03 7.4 551 6.26WBBR 7/27/2010 16:00:00 25.32 7.42 550 6.41WBBR 7/27/2010 17:00:00 25.5 7.44 574 6.43WBBR 7/27/2010 18:00:00 25.65 7.43 586 6.4WBBR 7/27/2010 19:00:00 25.61 7.42 572 6.21WBBR 7/27/2010 20:00:00 25.51 7.41 576 5.99

West Branch DuPage River Butterfield Road Crossing Page 40 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/27/2010 21:00:00 25.38 7.38 564 5.73WBBR 7/27/2010 22:00:00 25.3 7.38 592 5.58WBBR 7/27/2010 23:00:00 25.2 7.37 588 5.43WBBR 7/28/2010 0:00:00 25.1 7.36 590 5.34WBBR 7/28/2010 1:00:00 24.93 7.36 612 5.27WBBR 7/28/2010 2:00:00 24.86 7.34 596 5.19WBBR 7/28/2010 3:00:00 24.79 7.34 592 5.12WBBR 7/28/2010 4:00:00 24.65 7.34 606 5.13WBBR 7/28/2010 5:00:00 24.59 7.34 603 5.1WBBR 7/28/2010 6:00:00 24.49 7.33 608 5.08WBBR 7/28/2010 7:00:00 24.41 7.33 615 5.09WBBR 7/28/2010 8:00:00 24.46 7.33 601 5.15WBBR 7/28/2010 9:00:00 24.47 7.34 609 5.26WBBR 7/28/2010 10:00:00 24.61 7.35 620 5.46WBBR 7/28/2010 11:00:00 24.93 7.37 624 5.75WBBR 7/28/2010 12:00:00 25.31 7.4 624 6.03WBBR 7/28/2010 13:00:00 25.56 7.42 631 6.24WBBR 7/28/2010 14:00:00 25.78 7.43 634 6.38WBBR 7/28/2010 15:00:00 25.98 7.45 650 6.56WBBR 7/28/2010 16:00:00 26.13 7.47 632 6.57WBBR 7/28/2010 17:00:00 26.31 7.47 642 6.67WBBR 7/28/2010 18:00:00 26.23 7.48 660 6.72WBBR 7/28/2010 19:00:00 26.17 7.48 639 6.71WBBR 7/28/2010 20:00:00 26.03 7.46 645 6.56WBBR 7/28/2010 21:00:00 25.83 7.46 671 6.34WBBR 7/28/2010 22:00:00 25.53 7.44 670 6.14WBBR 7/28/2010 23:00:00 25.25 7.43 654 5.88WBBR 7/29/2010 0:00:00 24.94 7.41 685 5.79WBBR 7/29/2010 1:00:00 24.73 7.4 672 5.65WBBR 7/29/2010 2:00:00 24.47 7.39 682 5.62WBBR 7/29/2010 3:00:00 24.23 7.38 688 5.55WBBR 7/29/2010 4:00:00 24 7.38 684 5.5WBBR 7/29/2010 5:00:00 23.75 7.37 685 5.47WBBR 7/29/2010 6:00:00 23.51 7.37 684 5.45WBBR 7/29/2010 7:00:00 23.29 7.37 687 5.45WBBR 7/29/2010 8:00:00 23.21 7.37 684 5.55WBBR 7/29/2010 9:00:00 23.22 7.39 689 5.74WBBR 7/29/2010 10:00:00 23.4 7.4 692 5.95WBBR 7/29/2010 11:00:00 23.74 7.42 696 6.3WBBR 7/29/2010 12:00:00 24.16 7.46 701 6.65WBBR 7/29/2010 13:00:00 25.03 7.51 705 7.26WBBR 7/29/2010 14:00:00 25.36 7.54 711 7.51WBBR 7/29/2010 16:00:00 26.19 7.66 712 8WBBR 7/29/2010 17:00:00 26.35 7.67 722 8

West Branch DuPage River Butterfield Road Crossing Page 41 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/29/2010 18:00:00 26.35 7.67 725 7.95WBBR 7/29/2010 19:00:00 26.14 7.65 717 7.79WBBR 7/29/2010 20:00:00 25.79 7.63 718 7.47WBBR 7/29/2010 21:00:00 25.47 7.6 732 7.13WBBR 7/29/2010 22:00:00 25.04 7.56 721 6.79WBBR 7/29/2010 23:00:00 24.64 7.53 714 6.47WBBR 7/30/2010 0:00:00 24.28 7.52 736 6.27WBBR 7/30/2010 1:00:00 23.9 7.5 735 6.09WBBR 7/30/2010 2:00:00 23.61 7.48 740 5.96WBBR 7/30/2010 3:00:00 23.38 7.47 738 5.83WBBR 7/30/2010 4:00:00 23.17 7.45 747 5.76WBBR 7/30/2010 5:00:00 23.02 7.43 741 5.69WBBR 7/30/2010 6:00:00 22.83 7.41 743 5.62WBBR 7/30/2010 7:00:00 22.7 7.4 740 5.59WBBR 7/30/2010 8:00:00 22.63 7.4 738 5.6WBBR 7/30/2010 9:00:00 22.56 7.4 744 5.66WBBR 7/30/2010 10:00:00 22.59 7.4 743 5.78WBBR 7/30/2010 11:00:00 22.74 7.4 747 5.99WBBR 7/30/2010 12:00:00 23.09 7.43 749 6.34WBBR 7/30/2010 13:00:00 23.36 7.47 756 6.74WBBR 7/30/2010 14:00:00 23.64 7.5 769 7.15WBBR 7/30/2010 15:00:00 23.95 7.52 774 7.53WBBR 7/30/2010 16:00:00 24.03 7.53 781 7.67WBBR 7/30/2010 17:00:00 24.12 7.55 788 7.68WBBR 7/30/2010 18:00:00 24.09 7.53 792 7.52WBBR 7/30/2010 19:00:00 24.02 7.52 794 7.33WBBR 7/30/2010 20:00:00 23.89 7.52 796 7.12WBBR 7/30/2010 21:00:00 23.76 7.5 802 6.86WBBR 7/30/2010 22:00:00 23.57 7.48 797 6.58WBBR 7/30/2010 23:00:00 23.35 7.46 800 6.35WBBR 7/31/2010 0:00:00 23.12 7.45 795 6.18WBBR 7/31/2010 1:00:00 22.89 7.43 800 6.07WBBR 7/31/2010 2:00:00 22.67 7.42 798 5.99WBBR 7/31/2010 3:00:00 22.49 7.41 802 5.93WBBR 7/31/2010 4:00:00 22.3 7.4 800 5.94WBBR 7/31/2010 5:00:00 22.04 7.42 786 6.24WBBR 7/31/2010 6:00:00 21.77 7.4 763 6.28WBBR 7/31/2010 7:00:00 21.57 7.37 763 6.21WBBR 7/31/2010 8:00:00 21.45 7.35 768 6.03WBBR 7/31/2010 9:00:00 21.32 7.37 766 5.94WBBR 7/31/2010 10:00:00 21.31 7.36 776 5.99WBBR 7/31/2010 11:00:00 21.48 7.33 768 6.01WBBR 7/31/2010 12:00:00 21.69 7.33 752 6.15WBBR 7/31/2010 13:00:00 22.03 7.35 789 6.41

West Branch DuPage River Butterfield Road Crossing Page 42 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 7/31/2010 14:00:00 22.32 7.37 796 6.53WBBR 7/31/2010 15:00:00 22.52 7.37 795 6.54WBBR 7/31/2010 16:00:00 22.72 7.33 770 6.31WBBR 7/31/2010 17:00:00 22.95 7.32 749 6.24WBBR 7/31/2010 18:00:00 23.06 7.32 722 6.32WBBR 7/31/2010 19:00:00 23.13 7.34 741 6.48WBBR 7/31/2010 20:00:00 23.01 7.39 705 6.31WBBR 7/31/2010 21:00:00 22.9 7.39 714 6.11WBBR 7/31/2010 22:00:00 22.72 7.38 704 5.81WBBR 7/31/2010 23:00:00 22.56 7.36 706 5.62WBBR 8/1/2010 0:00:00 22.38 7.34 692 5.52WBBR 8/1/2010 1:00:00 22.22 7.34 698 5.65WBBR 8/1/2010 2:00:00 22.04 7.36 728 5.77WBBR 8/1/2010 3:00:00 21.89 7.36 732 5.74WBBR 8/1/2010 4:00:00 21.69 7.35 739 5.72WBBR 8/1/2010 5:00:00 21.56 7.32 731 5.71WBBR 8/1/2010 6:00:00 21.37 7.29 738 5.71WBBR 8/1/2010 7:00:00 21.31 7.26 725 5.73WBBR 8/1/2010 8:00:00 21.29 7.24 724 5.81WBBR 8/1/2010 9:00:00 21.44 7.23 714 5.95WBBR 8/1/2010 10:00:00 21.74 7.25 713 6.18WBBR 8/1/2010 11:00:00 22.15 7.27 716 6.46WBBR 8/1/2010 12:00:00 22.77 7.29 715 6.8WBBR 8/1/2010 13:00:00 23.51 7.34 717 7.17WBBR 8/1/2010 14:00:00 24.22 7.37 725 7.45WBBR 8/1/2010 15:00:00 24.87 7.4 732 7.64WBBR 8/1/2010 16:00:00 25.42 7.44 732 7.81WBBR 8/1/2010 17:00:00 25.74 7.46 740 7.86WBBR 8/1/2010 18:00:00 26.09 7.48 744 7.91WBBR 8/1/2010 19:00:00 26.02 7.48 739 7.75WBBR 8/1/2010 20:00:00 25.58 7.45 734 7.38WBBR 8/1/2010 21:00:00 25.22 7.41 737 6.99WBBR 8/1/2010 22:00:00 25.01 7.38 738 6.67WBBR 8/1/2010 23:00:00 24.75 7.36 738 6.41WBBR 8/2/2010 0:00:00 24.51 7.34 741 6.24WBBR 8/2/2010 1:00:00 24.24 7.32 748 6.1WBBR 8/2/2010 2:00:00 23.95 7.3 757 6.03WBBR 8/2/2010 3:00:00 23.6 7.27 763 5.96WBBR 8/2/2010 4:00:00 23.27 7.25 756 5.85WBBR 8/2/2010 5:00:00 23.01 7.23 770 5.8WBBR 8/2/2010 6:00:00 22.74 7.21 769 5.77WBBR 8/2/2010 7:00:00 22.54 7.21 768 5.77WBBR 8/2/2010 8:00:00 22.45 7.21 769 5.82WBBR 8/2/2010 9:00:00 22.46 7.21 783 5.94

West Branch DuPage River Butterfield Road Crossing Page 43 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 8/2/2010 10:00:00 22.71 7.22 786 6.22WBBR 8/2/2010 11:00:00 23.12 7.25 786 6.65WBBR 8/2/2010 12:00:00 23.67 7.32 794 7.08WBBR 8/2/2010 13:00:00 24.31 7.35 800 7.48WBBR 8/2/2010 14:00:00 24.8 7.39 809 7.74WBBR 8/2/2010 15:00:00 25.41 7.43 816 7.94WBBR 8/2/2010 16:00:00 25.7 7.46 822 7.94WBBR 8/2/2010 17:00:00 25.74 7.46 817 7.92WBBR 8/2/2010 18:00:00 25.66 7.45 823 7.57WBBR 8/2/2010 19:00:00 25.48 7.43 819 7.27WBBR 8/2/2010 20:00:00 25.25 7.39 822 6.95WBBR 8/2/2010 21:00:00 25.01 7.37 821 6.63WBBR 8/2/2010 22:00:00 24.79 7.34 819 6.41WBBR 8/2/2010 23:00:00 24.54 7.4 822 6.23WBBR 8/3/2010 0:00:00 24.21 7.4 828 6.12WBBR 8/3/2010 1:00:00 22.54 7.4 848 6.4WBBR 8/3/2010 4:00:00 23.08 7.35 816 6.11WBBR 8/3/2010 5:00:00 22.8 7.33 778 6.18WBBR 8/3/2010 6:00:00 22.5 7.3 756 6.33WBBR 8/3/2010 7:00:00 22.11 7.26 670 6.46WBBR 8/3/2010 8:00:00 21.62 7.2 660 6.51WBBR 8/3/2010 9:00:00 21.38 7.15 575 6.54WBBR 8/3/2010 10:00:00 21.61 7.14 556 6.5WBBR 8/3/2010 11:00:00 21.71 7.14 556 6.5WBBR 8/3/2010 12:00:00 21.97 7.16 543 6.51WBBR 8/3/2010 13:00:00 22.12 7.13 505 6.42WBBR 8/3/2010 14:00:00 22.35 7.09 469 6.29WBBR 8/3/2010 15:00:00 22.6 7.08 440 6.19WBBR 8/3/2010 16:00:00 22.87 7.08 429 6.04WBBR 8/3/2010 17:00:00 22.99 7.08 431 6.1WBBR 8/3/2010 18:00:00 23.18 7.09 435 5.89WBBR 8/3/2010 19:00:00 23.2 7.09 442 5.76WBBR 8/3/2010 20:00:00 23.17 7.1 452 5.67WBBR 8/3/2010 21:00:00 23.19 7.1 459 5.5WBBR 8/3/2010 22:00:00 23.09 7.08 471 5.39WBBR 8/3/2010 23:00:00 23.1 7.11 478 5.27WBBR 8/4/2010 0:00:00 23.12 7.11 484 5.18WBBR 8/4/2010 1:00:00 23.03 7.08 497 5.15WBBR 8/4/2010 2:00:00 23.06 7.09 502 5.06WBBR 8/4/2010 3:00:00 23.06 7.09 507 5WBBR 8/4/2010 4:00:00 23.03 7.08 516 4.97WBBR 8/4/2010 5:00:00 22.99 7.09 523 4.95WBBR 8/4/2010 6:00:00 22.91 7.08 532 4.93WBBR 8/4/2010 7:00:00 22.92 7.1 526 5.14

West Branch DuPage River Butterfield Road Crossing Page 44 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 8/4/2010 8:00:00 22.7 7.09 529 5.29WBBR 8/4/2010 9:00:00 22.56 7.1 510 5.42WBBR 8/4/2010 10:00:00 22.44 7.1 521 5.47WBBR 8/4/2010 11:00:00 22.54 7.09 510 5.64WBBR 8/4/2010 12:00:00 22.75 7.11 498 5.74WBBR 8/4/2010 13:00:00 22.86 7.11 516 5.84WBBR 8/4/2010 14:00:00 22.87 7.09 525 5.76WBBR 8/4/2010 15:00:00 22.8 7.09 522 5.67WBBR 8/4/2010 16:00:00 22.79 7.07 509 5.6WBBR 8/4/2010 17:00:00 22.82 7.06 502 5.56WBBR 8/4/2010 18:00:00 22.95 7.06 490 5.49WBBR 8/4/2010 19:00:00 23.03 7.06 489 5.47WBBR 8/4/2010 20:00:00 22.99 7.07 497 5.43WBBR 8/4/2010 21:00:00 23.01 7.06 498 5.3WBBR 8/4/2010 22:00:00 22.97 7.05 504 5.21WBBR 8/4/2010 23:00:00 22.9 7.05 512 5.15WBBR 8/5/2010 0:00:00 22.87 7.04 513 5.1WBBR 8/5/2010 1:00:00 22.75 7.04 521 5.08WBBR 8/5/2010 2:00:00 22.75 7.04 515 4.99WBBR 8/5/2010 3:00:00 22.58 7.04 527 5.02WBBR 8/5/2010 4:00:00 22.53 7.03 527 5WBBR 8/5/2010 5:00:00 22.4 7.04 534 5WBBR 8/5/2010 6:00:00 22.31 7.02 538 4.98WBBR 8/5/2010 7:00:00 22.19 7.03 544 5.01WBBR 8/5/2010 8:00:00 22.2 7.04 545 5.03WBBR 8/5/2010 9:00:00 22.19 7.05 554 5.15WBBR 8/5/2010 10:00:00 22.41 7.06 557 5.3WBBR 8/5/2010 11:00:00 22.75 7.09 558 5.51WBBR 8/5/2010 12:00:00 23.08 7.13 576 5.77WBBR 8/5/2010 13:00:00 23.53 7.16 578 6.02WBBR 8/5/2010 14:00:00 23.93 7.19 589 6.24WBBR 8/5/2010 15:00:00 24.24 7.44 572 6.33WBBR 8/5/2010 16:00:00 24.51 7.3 585 6.43WBBR 8/5/2010 17:00:00 24.48 7.3 599 6.38WBBR 8/5/2010 18:00:00 24.48 7.3 609 6.33WBBR 8/5/2010 19:00:00 24.33 7.29 610 6.21WBBR 8/5/2010 20:00:00 24.12 7.26 609 6.02WBBR 8/5/2010 21:00:00 23.89 7.24 596 5.83WBBR 8/5/2010 22:00:00 23.63 7.22 603 5.69WBBR 8/5/2010 23:00:00 23.34 7.2 616 5.63WBBR 8/6/2010 0:00:00 23.13 7.18 614 5.58WBBR 8/6/2010 1:00:00 22.92 7.17 617 5.54WBBR 8/6/2010 2:00:00 22.73 7.16 619 5.54WBBR 8/6/2010 3:00:00 22.5 7.15 625 5.55

West Branch DuPage River Butterfield Road Crossing Page 45 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 8/6/2010 4:00:00 22.3 7.15 629 5.58WBBR 8/6/2010 5:00:00 22.15 7.14 626 5.61WBBR 8/6/2010 6:00:00 21.94 7.13 630 5.64WBBR 8/6/2010 7:00:00 21.73 7.12 637 5.68WBBR 8/6/2010 8:00:00 21.65 7.13 636 5.72WBBR 8/6/2010 9:00:00 21.6 7.12 646 5.86WBBR 8/6/2010 10:00:00 21.77 7.14 648 6.02WBBR 8/6/2010 11:00:00 22.07 7.16 657 6.22WBBR 8/6/2010 12:00:00 22.52 7.19 660 6.42WBBR 8/6/2010 13:00:00 23.02 7.22 662 6.64WBBR 8/6/2010 14:00:00 23.49 7.25 679 6.83WBBR 8/6/2010 15:00:00 23.84 7.28 674 6.99WBBR 8/6/2010 16:00:00 24.23 7.3 666 7.13WBBR 8/6/2010 17:00:00 24.4 7.32 665 7.15WBBR 8/6/2010 18:00:00 24.37 7.31 689 7.1WBBR 8/6/2010 19:00:00 24.27 7.32 678 7.05WBBR 8/6/2010 20:00:00 24.06 7.3 673 6.88WBBR 8/6/2010 21:00:00 23.84 7.29 691 6.73WBBR 8/6/2010 22:00:00 23.56 7.28 699 6.57WBBR 8/6/2010 23:00:00 23.22 7.25 701 6.41WBBR 8/7/2010 0:00:00 22.9 7.23 705 6.3WBBR 8/7/2010 1:00:00 22.59 7.2 710 6.21WBBR 8/7/2010 2:00:00 22.37 7.19 710 6.14WBBR 8/7/2010 3:00:00 22.15 7.17 712 6.09WBBR 8/7/2010 4:00:00 21.98 7.16 709 6.06WBBR 8/7/2010 5:00:00 21.83 7.14 708 6.04WBBR 8/7/2010 6:00:00 21.66 7.13 708 6.04WBBR 8/7/2010 7:00:00 21.52 7.12 711 6.04WBBR 8/7/2010 8:00:00 21.43 7.12 715 6.1WBBR 8/7/2010 9:00:00 21.52 7.12 713 6.2WBBR 8/7/2010 10:00:00 21.72 7.15 711 6.37WBBR 8/7/2010 11:00:00 22.05 7.18 714 6.63WBBR 8/7/2010 12:00:00 22.39 7.21 719 6.85WBBR 8/7/2010 13:00:00 22.89 7.24 730 7.08WBBR 8/7/2010 14:00:00 23.34 7.28 737 7.3WBBR 8/7/2010 15:00:00 23.77 7.31 742 7.46WBBR 8/7/2010 16:00:00 24.28 7.36 747 7.61WBBR 8/7/2010 17:00:00 24.55 7.38 757 7.62WBBR 8/7/2010 18:00:00 24.7 7.4 745 7.66WBBR 8/7/2010 19:00:00 24.63 7.38 742 7.57WBBR 8/7/2010 20:00:00 24.38 7.36 738 7.32WBBR 8/7/2010 21:00:00 24.17 7.35 749 7.05WBBR 8/7/2010 22:00:00 23.92 7.32 752 6.79WBBR 8/7/2010 23:00:00 23.67 7.31 758 6.6

West Branch DuPage River Butterfield Road Crossing Page 46 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 8/8/2010 0:00:00 23.42 7.29 767 6.48WBBR 8/8/2010 1:00:00 23.1 7.27 775 6.35WBBR 8/8/2010 2:00:00 22.81 7.25 773 6.25WBBR 8/8/2010 3:00:00 22.54 7.22 772 6.15WBBR 8/8/2010 4:00:00 22.3 7.21 770 6.07WBBR 8/8/2010 5:00:00 22.12 7.19 766 6.03WBBR 8/8/2010 6:00:00 21.96 7.18 765 6.01WBBR 8/8/2010 7:00:00 21.84 7.17 767 6.01WBBR 8/8/2010 8:00:00 21.73 7.16 771 6.03WBBR 8/8/2010 9:00:00 21.71 7.16 768 6.07WBBR 8/8/2010 10:00:00 21.68 7.16 769 6.12WBBR 8/8/2010 11:00:00 21.66 7.16 774 6.19WBBR 8/8/2010 12:00:00 21.64 7.16 776 6.23WBBR 8/8/2010 13:00:00 21.63 7.16 780 6.23WBBR 8/8/2010 14:00:00 22 7.19 786 6.36WBBR 8/8/2010 15:00:00 22.5 7.23 792 6.72WBBR 8/8/2010 16:00:00 23.16 7.28 796 7.12WBBR 8/8/2010 17:00:00 23.75 7.32 802 7.41WBBR 8/8/2010 18:00:00 24.17 7.35 806 7.46WBBR 8/8/2010 19:00:00 24.35 7.35 811 7.34WBBR 8/8/2010 20:00:00 24.37 7.34 813 7.11WBBR 8/8/2010 21:00:00 24.23 7.33 804 6.85WBBR 8/8/2010 22:00:00 24.08 7.3 811 6.61WBBR 8/8/2010 23:00:00 23.94 7.29 817 6.41WBBR 8/9/2010 0:00:00 23.76 7.27 811 6.24WBBR 8/9/2010 1:00:00 23.56 7.25 810 6.09WBBR 8/9/2010 2:00:00 23.31 7.23 823 6.05WBBR 8/9/2010 3:00:00 23.04 7.22 830 5.99WBBR 8/9/2010 4:00:00 22.85 7.21 825 5.93WBBR 8/9/2010 5:00:00 22.7 7.19 824 5.88WBBR 8/9/2010 6:00:00 22.59 7.18 819 5.85WBBR 8/9/2010 7:00:00 22.51 7.17 815 5.84WBBR 8/9/2010 8:00:00 22.51 7.18 814 5.86WBBR 8/9/2010 9:00:00 22.54 7.19 815 5.93WBBR 8/9/2010 10:00:00 22.59 7.19 812 6.04WBBR 8/9/2010 11:00:00 22.85 7.2 816 6.2WBBR 8/9/2010 12:00:00 23.15 7.23 821 6.48WBBR 8/9/2010 13:00:00 23.71 7.27 825 6.87WBBR 8/9/2010 14:00:00 24.41 7.31 826 7.18WBBR 8/9/2010 15:00:00 25.13 7.36 836 7.44WBBR 8/9/2010 16:00:00 25.66 7.39 842 7.57WBBR 8/9/2010 17:00:00 26.09 7.42 833 7.61WBBR 8/9/2010 18:00:00 26.2 7.44 820 7.52WBBR 8/9/2010 19:00:00 26.11 7.43 828 7.24

West Branch DuPage River Butterfield Road Crossing Page 47 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBBR 8/9/2010 20:00:00 25.97 7.4 821 6.91WBBR 8/9/2010 21:00:00 25.76 7.37 817 6.59WBBR 8/9/2010 22:00:00 25.54 7.35 811 6.3WBBR 8/9/2010 23:00:00 25.33 7.33 800 6.11WBBR 8/10/2010 0:00:00 25.12 7.32 788 6WBBR 8/10/2010 1:00:00 24.84 7.29 777 5.9WBBR 8/10/2010 2:00:00 24.55 7.25 764 5.79WBBR 8/10/2010 3:00:00 24.36 7.23 781 5.74WBBR 8/10/2010 4:00:00 24.16 7.22 791 5.69WBBR 8/10/2010 5:00:00 23.98 7.21 806 5.65WBBR 8/10/2010 6:00:00 23.83 7.2 808 5.59WBBR 8/10/2010 7:00:00 23.7 7.18 809 5.58WBBR 8/10/2010 8:00:00 23.64 7.19 807 5.6WBBR 8/10/2010 9:00:00 23.59 7.18 810 5.65WBBR 8/10/2010 10:00:00 23.6 7.19 809 5.71WBBR 8/10/2010 11:00:00 23.71 7.19 811 5.91WBBR 8/10/2010 12:00:00 23.95 7.2 816 6.19WBBR 8/10/2010 13:00:00 24.28 7.22 823 6.6WBBR 8/10/2010 14:00:00 24.69 7.25 827 6.97WBBR 8/10/2010 15:00:00 25.34 7.28 836 7.26WBBR 8/10/2010 16:00:00 25.83 7.33 841 7.59WBBR 8/10/2010 17:00:00 26.32 7.36 842 7.71WBBR 8/10/2010 18:00:00 26.56 7.39 846 7.55WBBR 8/10/2010 19:00:00 26.64 7.39 845 7.45WBBR 8/10/2010 20:00:00 26.54 7.39 846 7.16WBBR 8/10/2010 21:00:00 26.33 7.37 848 6.83WBBR 8/10/2010 22:00:00 26.06 7.36 850 6.48WBBR 8/10/2010 23:00:00 25.74 7.33 850 6.24WBBR 8/11/2010 0:00:00 25.48 7.31 852 6.04WBBR 8/11/2010 1:00:00 25.19 7.29 854 5.88WBBR 8/11/2010 2:00:00 24.95 7.28 858 5.78WBBR 8/11/2010 3:00:00 24.72 7.27 869 5.77WBBR 8/11/2010 4:00:00 24.5 7.26 867 5.69WBBR 8/11/2010 5:00:00 24.28 7.25 868 5.64WBBR 8/11/2010 6:00:00 24.08 7.23 864 5.6WBBR 8/11/2010 7:00:00 23.88 7.22 862 5.55WBBR 8/11/2010 8:00:00 23.77 7.21 858 5.59WBBR 8/11/2010 9:00:00 23.84 7.21 857 5.69WBBR 8/11/2010 10:00:00 23.9 7.3 862 5.93

West Branch DuPage River Butterfield Road Crossing Page 48 of 48

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LWBMG 5/13/2010 16:00:00 12.86 7.39 517 8.57WBMG 5/13/2010 17:00:00 13.23 7.47 507 8.5WBMG 5/13/2010 18:00:00 13.43 7.5 509 8.45WBMG 5/13/2010 19:00:00 13.5 7.53 509 8.38WBMG 5/13/2010 20:00:00 13.52 7.54 516 8.33WBMG 5/13/2010 21:00:00 13.54 7.53 532 8.22WBMG 5/13/2010 22:00:00 13.42 7.54 527 8.12WBMG 5/13/2010 23:00:00 13.34 7.54 528 8.05WBMG 5/14/2010 0:00:00 13.29 7.53 527 7.97WBMG 5/14/2010 1:00:00 13.23 7.54 521 7.9WBMG 5/14/2010 2:00:00 13.18 7.54 517 7.86WBMG 5/14/2010 3:00:00 13.13 7.55 519 7.84WBMG 5/14/2010 4:00:00 13.09 7.55 521 7.78WBMG 5/14/2010 5:00:00 13.12 7.54 555 7.67WBMG 5/14/2010 6:00:00 12.99 7.55 534 7.73WBMG 5/14/2010 7:00:00 12.94 7.56 531 7.74WBMG 5/14/2010 8:00:00 12.93 7.56 535 7.73WBMG 5/14/2010 9:00:00 12.99 7.56 546 7.7WBMG 5/14/2010 10:00:00 13.13 7.57 550 7.73WBMG 5/14/2010 11:00:00 13.36 7.58 560 7.77WBMG 5/14/2010 12:00:00 13.62 7.58 581 7.78WBMG 5/14/2010 13:00:00 13.96 7.6 586 7.87WBMG 5/14/2010 14:00:00 14.27 7.61 601 7.96WBMG 5/14/2010 15:00:00 14.57 7.63 607 8.05WBMG 5/14/2010 16:00:00 14.85 7.65 622 8.16WBMG 5/14/2010 17:00:00 15.01 7.66 636 8.24WBMG 5/14/2010 18:00:00 15.13 7.68 658 8.29WBMG 5/14/2010 19:00:00 15.21 7.69 664 8.31WBMG 5/14/2010 20:00:00 15.2 7.7 665 8.29WBMG 5/14/2010 21:00:00 15.24 7.71 680 8.25WBMG 5/14/2010 22:00:00 15.17 7.71 688 8.1WBMG 5/14/2010 23:00:00 15.05 7.7 692 8.07WBMG 5/15/2010 0:00:00 15.03 7.69 705 7.95WBMG 5/15/2010 1:00:00 14.94 7.68 709 7.87WBMG 5/15/2010 2:00:00 14.88 7.66 717 7.75WBMG 5/15/2010 3:00:00 14.74 7.66 718 7.81WBMG 5/15/2010 4:00:00 14.63 7.65 724 7.73WBMG 5/15/2010 5:00:00 14.5 7.64 729 7.7WBMG 5/15/2010 6:00:00 14.35 7.64 736 7.74WBMG 5/15/2010 7:00:00 14.22 7.64 739 7.75WBMG 5/15/2010 8:00:00 14.13 7.64 745 7.83WBMG 5/15/2010 9:00:00 14.16 7.64 754 7.85WBMG 5/15/2010 10:00:00 14.22 7.65 756 8.04WBMG 5/15/2010 11:00:00 14.36 7.67 758 8.23

Station

West Branch DuPage River McDowell Grove Forest Preserve Page 1 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 5/15/2010 12:00:00 14.51 7.69 759 8.46WBMG 5/15/2010 13:00:00 14.7 7.71 761 8.56WBMG 5/15/2010 14:00:00 14.85 7.72 766 8.73WBMG 5/15/2010 15:00:00 15 7.74 771 8.8WBMG 5/15/2010 16:00:00 15.06 7.75 773 8.96WBMG 5/15/2010 17:00:00 15.12 7.77 774 9.01WBMG 5/15/2010 18:00:00 15.17 7.78 775 9.05WBMG 5/15/2010 19:00:00 15.18 7.79 782 9.1WBMG 5/15/2010 20:00:00 15.09 7.79 782 9.02WBMG 5/15/2010 21:00:00 14.98 7.78 784 8.95WBMG 5/15/2010 22:00:00 14.84 7.78 787 8.93WBMG 5/15/2010 23:00:00 14.66 7.78 789 8.89WBMG 5/16/2010 0:00:00 14.48 7.77 792 8.85WBMG 5/16/2010 1:00:00 14.29 7.77 795 8.82WBMG 5/16/2010 2:00:00 14.11 7.76 798 8.79WBMG 5/16/2010 3:00:00 13.92 7.75 802 8.8WBMG 5/16/2010 4:00:00 13.73 7.74 803 8.77WBMG 5/16/2010 5:00:00 13.55 7.74 803 8.78WBMG 5/16/2010 6:00:00 13.4 7.74 805 8.79WBMG 5/16/2010 7:00:00 13.28 7.74 806 8.82WBMG 5/16/2010 8:00:00 13.26 7.75 808 8.9WBMG 5/16/2010 9:00:00 13.35 7.75 811 9WBMG 5/16/2010 10:00:00 13.63 7.77 813 9.12WBMG 5/16/2010 11:00:00 14.02 7.79 815 9.24WBMG 5/16/2010 12:00:00 14.54 7.81 819 9.37WBMG 5/16/2010 13:00:00 15.19 7.83 823 9.52WBMG 5/16/2010 14:00:00 15.86 7.85 828 9.58WBMG 5/16/2010 15:00:00 16.41 7.85 832 9.56WBMG 5/16/2010 16:00:00 16.84 7.87 837 9.5WBMG 5/16/2010 17:00:00 17.16 7.89 845 9.47WBMG 5/16/2010 18:00:00 17.29 7.9 848 9.39WBMG 5/16/2010 19:00:00 17.22 7.89 853 9.18WBMG 5/16/2010 20:00:00 17.12 7.89 855 9.04WBMG 5/16/2010 21:00:00 16.85 7.88 858 8.9WBMG 5/16/2010 22:00:00 16.59 7.87 861 8.82WBMG 5/16/2010 23:00:00 16.33 7.87 866 8.77WBMG 5/17/2010 0:00:00 16.08 7.86 869 8.7WBMG 5/17/2010 1:00:00 15.83 7.85 871 8.65WBMG 5/17/2010 2:00:00 15.61 7.84 874 8.61WBMG 5/17/2010 3:00:00 15.39 7.82 878 8.58WBMG 5/17/2010 4:00:00 15.2 7.82 883 8.54WBMG 5/17/2010 5:00:00 15.03 7.81 885 8.5WBMG 5/17/2010 6:00:00 14.88 7.8 891 8.52WBMG 5/17/2010 7:00:00 14.74 7.81 893 8.55

West Branch DuPage River McDowell Grove Forest Preserve Page 2 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 5/17/2010 8:00:00 14.63 7.81 893 8.57WBMG 5/17/2010 9:00:00 14.54 7.81 895 8.65WBMG 5/17/2010 10:00:00 14.54 7.82 903 8.79WBMG 5/17/2010 11:00:00 14.61 7.82 902 8.94WBMG 5/17/2010 12:00:00 14.74 7.85 903 9.11WBMG 5/17/2010 13:00:00 14.82 7.86 904 9.2WBMG 5/17/2010 14:00:00 14.83 7.86 906 9.23WBMG 5/17/2010 15:00:00 14.94 7.87 908 9.3WBMG 5/17/2010 16:00:00 14.96 7.88 911 9.3WBMG 5/17/2010 17:00:00 14.98 7.89 912 9.3WBMG 5/17/2010 18:00:00 15.01 7.88 914 9.34WBMG 5/17/2010 19:00:00 15.01 7.91 913 9.3WBMG 5/17/2010 20:00:00 14.89 7.9 915 9.14WBMG 5/17/2010 21:00:00 14.75 7.88 918 9.04WBMG 5/17/2010 22:00:00 14.65 7.87 918 9WBMG 5/17/2010 23:00:00 14.56 7.86 918 8.92WBMG 5/18/2010 0:00:00 14.46 7.85 923 8.9WBMG 5/18/2010 1:00:00 14.33 7.85 924 8.82WBMG 5/18/2010 2:00:00 14.21 7.84 924 8.78WBMG 5/18/2010 3:00:00 14.07 7.84 927 8.79WBMG 5/18/2010 4:00:00 13.91 7.83 926 8.75WBMG 5/18/2010 5:00:00 13.81 7.83 927 8.72WBMG 5/18/2010 6:00:00 13.68 7.82 926 8.71WBMG 5/18/2010 7:00:00 13.57 7.82 929 8.74WBMG 5/18/2010 8:00:00 13.54 7.83 932 8.86WBMG 5/18/2010 9:00:00 13.64 7.84 932 9.07WBMG 5/18/2010 10:00:00 13.85 7.86 933 9.3WBMG 5/18/2010 11:00:00 14.26 7.88 939 9.46WBMG 5/18/2010 12:00:00 14.79 7.91 941 9.65WBMG 5/18/2010 13:00:00 14.85 7.91 938 9.65WBMG 5/18/2010 14:00:00 14.91 7.92 937 9.58WBMG 5/18/2010 15:00:00 15.02 7.93 939 9.56WBMG 5/18/2010 16:00:00 15.25 7.95 945 9.6WBMG 5/18/2010 17:00:00 15.64 7.97 952 9.73WBMG 5/18/2010 18:00:00 15.67 7.97 953 9.57WBMG 5/18/2010 19:00:00 15.61 7.96 956 9.33WBMG 5/18/2010 20:00:00 15.48 7.95 958 9.13WBMG 5/18/2010 21:00:00 15.39 7.93 961 8.98WBMG 5/18/2010 22:00:00 15.24 7.92 961 8.9WBMG 5/18/2010 23:00:00 15.06 7.92 964 8.85WBMG 5/19/2010 0:00:00 14.85 7.91 866 8.8WBMG 5/19/2010 1:00:00 14.62 7.89 851 8.72WBMG 5/19/2010 2:00:00 14.4 7.88 953 8.66WBMG 5/19/2010 3:00:00 14.18 7.87 963 8.67

West Branch DuPage River McDowell Grove Forest Preserve Page 3 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 5/19/2010 4:00:00 13.96 7.86 961 8.66WBMG 5/19/2010 5:00:00 13.75 7.86 965 8.69WBMG 5/19/2010 6:00:00 13.52 7.86 924 8.66WBMG 5/19/2010 7:00:00 13.37 7.85 918 8.72WBMG 5/19/2010 8:00:00 13.39 7.86 904 8.89WBMG 5/19/2010 9:00:00 13.57 7.87 975 9.14WBMG 5/19/2010 10:00:00 14 7.89 971 9.41WBMG 5/19/2010 11:00:00 14.68 7.93 958 9.66WBMG 5/19/2010 12:00:00 15.6 7.95 951 9.86WBMG 5/19/2010 13:00:00 16.47 7.97 970 9.98WBMG 5/19/2010 14:00:00 17.34 8 962 10.1WBMG 5/19/2010 15:00:00 17.78 8 954 10.1WBMG 5/19/2010 16:00:00 18.38 8.03 977 10.09WBMG 5/19/2010 17:00:00 18.56 8.02 984 9.91WBMG 5/19/2010 18:00:00 18.62 8.02 984 9.56WBMG 5/19/2010 19:00:00 18.63 8 991 9.12WBMG 5/19/2010 20:00:00 18.7 7.98 987 8.75WBMG 5/19/2010 21:00:00 18.68 7.96 961 8.46WBMG 5/19/2010 22:00:00 18.56 7.95 877 8.25WBMG 5/19/2010 23:00:00 18.3 7.93 994 8.14WBMG 5/20/2010 0:00:00 17.99 7.92 995 8.08WBMG 5/20/2010 1:00:00 17.68 7.91 993 8WBMG 5/20/2010 2:00:00 17.37 7.89 995 7.96WBMG 5/20/2010 3:00:00 17.02 7.87 993 7.88WBMG 5/20/2010 4:00:00 16.67 7.87 991 7.86WBMG 5/20/2010 5:00:00 16.37 7.86 994 7.89WBMG 5/20/2010 6:00:00 16.1 7.85 1002 7.97WBMG 5/20/2010 7:00:00 15.85 7.85 999 8.03WBMG 5/20/2010 8:00:00 15.77 7.85 1002 8.25WBMG 5/20/2010 9:00:00 15.89 7.86 1012 8.6WBMG 5/20/2010 10:00:00 16.17 7.89 1013 8.95WBMG 5/20/2010 11:00:00 16.83 7.92 997 9.21WBMG 5/20/2010 12:00:00 17.32 7.94 996 9.49WBMG 5/20/2010 13:00:00 17.99 7.97 995 9.69WBMG 5/20/2010 14:00:00 18.14 7.98 997 9.74WBMG 5/20/2010 15:00:00 18.37 7.97 1005 9.72WBMG 5/20/2010 16:00:00 18.47 8.01 1008 9.62WBMG 5/20/2010 17:00:00 18.41 8 1014 9.38WBMG 5/20/2010 18:00:00 18.4 7.97 1017 8.94WBMG 5/20/2010 19:00:00 18.42 7.95 1024 8.6WBMG 5/20/2010 20:00:00 18.43 7.93 1023 8.36WBMG 5/20/2010 21:00:00 18.37 7.92 1027 8.13WBMG 5/20/2010 22:00:00 18.25 7.9 1025 7.96WBMG 5/20/2010 23:00:00 18.08 7.89 1022 7.88

West Branch DuPage River McDowell Grove Forest Preserve Page 4 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 5/21/2010 0:00:00 17.91 7.89 1024 7.85WBMG 5/21/2010 1:00:00 17.69 7.88 1021 7.8WBMG 5/21/2010 2:00:00 17.44 7.87 1020 7.76WBMG 5/21/2010 3:00:00 17.22 7.85 1026 7.71WBMG 5/21/2010 4:00:00 17.01 7.83 1021 7.66WBMG 5/21/2010 5:00:00 16.85 7.82 1025 7.64WBMG 5/21/2010 6:00:00 16.71 7.82 1042 7.69WBMG 5/21/2010 7:00:00 16.59 7.81 1032 7.62WBMG 5/21/2010 8:00:00 16.52 7.81 1022 7.74WBMG 5/21/2010 9:00:00 16.49 7.81 1018 7.95WBMG 5/21/2010 10:00:00 16.46 7.81 1016 8.06WBMG 5/21/2010 11:00:00 16.53 7.82 1013 8.19WBMG 5/21/2010 12:00:00 16.66 7.83 1014 8.38WBMG 5/21/2010 13:00:00 16.83 7.83 1016 8.47WBMG 5/21/2010 14:00:00 16.92 7.83 1021 8.53WBMG 5/21/2010 15:00:00 17.32 7.84 1021 8.66WBMG 5/21/2010 16:00:00 17.66 7.86 1026 8.91WBMG 5/21/2010 17:00:00 17.79 7.86 1027 8.78WBMG 5/21/2010 18:00:00 17.71 7.83 1031 8.41WBMG 5/21/2010 19:00:00 17.78 7.82 1031 8.21WBMG 5/21/2010 20:00:00 17.73 7.82 1031 8.15WBMG 5/21/2010 21:00:00 17.7 7.81 1033 8.04WBMG 5/21/2010 22:00:00 17.68 7.8 1024 7.9WBMG 5/21/2010 23:00:00 17.59 7.8 1018 7.88WBMG 5/22/2010 0:00:00 17.42 7.78 1012 7.82WBMG 5/22/2010 1:00:00 17.28 7.78 1009 7.8WBMG 5/22/2010 2:00:00 17.16 7.77 1005 7.78WBMG 5/22/2010 3:00:00 17.05 7.76 1000 7.76WBMG 5/22/2010 4:00:00 16.95 7.75 999 7.78WBMG 5/22/2010 5:00:00 16.84 7.74 995 7.77WBMG 5/22/2010 6:00:00 16.76 7.73 990 7.74WBMG 5/22/2010 7:00:00 16.72 7.72 988 7.77WBMG 5/22/2010 8:00:00 16.73 7.72 989 7.84WBMG 5/22/2010 9:00:00 16.79 7.73 996 7.98WBMG 5/22/2010 10:00:00 16.99 7.74 1001 8.21WBMG 5/22/2010 11:00:00 17.49 7.77 859 8.56WBMG 5/22/2010 12:00:00 17.95 7.8 996 8.81WBMG 5/22/2010 13:00:00 18.63 7.83 980 8.96WBMG 5/22/2010 14:00:00 19.44 7.86 967 9.19WBMG 5/22/2010 15:00:00 19.9 7.88 952 9.21WBMG 5/22/2010 16:00:00 20.28 7.87 945 9.19WBMG 5/22/2010 17:00:00 20.72 7.89 893 9.14WBMG 5/22/2010 18:00:00 20.78 7.86 855 8.78WBMG 5/22/2010 19:00:00 20.74 7.84 944 8.31

West Branch DuPage River McDowell Grove Forest Preserve Page 5 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 5/22/2010 20:00:00 20.83 7.81 949 7.88WBMG 5/22/2010 21:00:00 20.88 7.8 958 7.6WBMG 5/22/2010 22:00:00 20.78 7.78 970 7.47WBMG 5/22/2010 23:00:00 20.63 7.77 976 7.32WBMG 5/23/2010 0:00:00 20.42 7.77 982 7.31WBMG 5/23/2010 1:00:00 20.2 7.76 987 7.26WBMG 5/23/2010 2:00:00 19.96 7.75 988 7.17WBMG 5/23/2010 3:00:00 19.68 7.73 994 7.2WBMG 5/23/2010 4:00:00 19.43 7.73 995 7.19WBMG 5/23/2010 5:00:00 19.19 7.71 987 7.08WBMG 5/23/2010 6:00:00 19 7.7 989 7.11WBMG 5/23/2010 7:00:00 18.86 7.7 992 7.23WBMG 5/23/2010 8:00:00 18.87 7.71 990 7.41WBMG 5/23/2010 9:00:00 19.09 7.72 990 7.74WBMG 5/23/2010 10:00:00 19.66 7.75 986 8.11WBMG 5/23/2010 11:00:00 20.4 7.79 985 8.57WBMG 5/23/2010 12:00:00 21.3 7.84 989 9.01WBMG 5/23/2010 13:00:00 22.25 7.88 991 9.38WBMG 5/23/2010 14:00:00 23.07 7.91 997 9.58WBMG 5/23/2010 15:00:00 23.75 7.93 999 9.65WBMG 5/23/2010 16:00:00 24.19 7.95 867 9.61WBMG 5/23/2010 17:00:00 24.18 7.94 1007 9.26WBMG 5/23/2010 18:00:00 24.26 7.92 960 8.8WBMG 5/23/2010 19:00:00 24.2 7.89 779 8.21WBMG 5/23/2010 20:00:00 24.13 7.84 1024 7.57WBMG 5/23/2010 21:00:00 24.14 7.81 1027 7.12WBMG 5/23/2010 22:00:00 24.12 7.77 1028 6.79WBMG 5/23/2010 23:00:00 24.04 7.76 1025 6.57WBMG 5/24/2010 0:00:00 23.92 7.75 1027 6.48WBMG 5/24/2010 1:00:00 23.75 7.73 1024 6.4WBMG 5/24/2010 2:00:00 23.53 7.72 1026 6.29WBMG 5/24/2010 3:00:00 23.3 7.69 1025 6.23WBMG 5/24/2010 4:00:00 23.04 7.67 1027 6.21WBMG 5/24/2010 5:00:00 22.79 7.64 1031 6.21WBMG 5/24/2010 6:00:00 22.54 7.62 1026 6.11WBMG 5/24/2010 7:00:00 22.38 7.61 1035 6.3WBMG 5/24/2010 8:00:00 22.35 7.61 1037 6.58WBMG 5/24/2010 9:00:00 22.56 7.63 1031 7WBMG 5/24/2010 10:00:00 23.01 7.66 1027 7.52WBMG 5/24/2010 11:00:00 23.71 7.71 1022 8.13WBMG 5/24/2010 12:00:00 24.54 7.76 1020 8.67WBMG 5/24/2010 13:00:00 25.23 7.8 1019 9.06WBMG 5/24/2010 14:00:00 26.02 7.84 1019 9.31WBMG 5/24/2010 15:00:00 26.51 7.87 1022 9.5

West Branch DuPage River McDowell Grove Forest Preserve Page 6 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 5/24/2010 16:00:00 26.63 7.87 1021 9.38WBMG 5/24/2010 17:00:00 26.8 7.87 1028 9.23WBMG 5/24/2010 18:00:00 26.76 7.86 1029 8.85WBMG 5/24/2010 19:00:00 26.61 7.81 1040 7.98WBMG 5/24/2010 20:00:00 26.52 7.76 1046 7.26WBMG 5/24/2010 21:00:00 26.41 7.72 1048 6.71WBMG 5/24/2010 22:00:00 26.28 7.7 1052 6.35WBMG 5/24/2010 23:00:00 26.09 7.67 1049 6.14WBMG 5/25/2010 0:00:00 25.89 7.65 1048 6.01WBMG 5/25/2010 1:00:00 25.67 7.63 1050 5.92WBMG 5/25/2010 2:00:00 25.4 7.61 1048 5.93WBMG 5/25/2010 3:00:00 25.06 7.6 1047 5.84WBMG 5/25/2010 4:00:00 24.68 7.56 1051 5.65WBMG 5/25/2010 5:00:00 24.36 7.53 1062 5.59WBMG 5/25/2010 6:00:00 23.98 7.5 1043 5.58WBMG 5/25/2010 7:00:00 23.73 7.49 1062 5.74WBMG 5/25/2010 8:00:00 23.62 7.49 1063 6.15WBMG 5/25/2010 9:00:00 23.64 7.52 1066 6.72WBMG 5/25/2010 10:00:00 24.01 7.56 1057 7.31WBMG 5/25/2010 11:00:00 24.62 7.62 1051 8.05WBMG 5/25/2010 12:00:00 25.36 7.68 1045 8.7WBMG 5/25/2010 13:00:00 26.09 7.74 1038 9.29WBMG 5/25/2010 14:00:00 26.83 7.79 1038 9.59WBMG 5/25/2010 15:00:00 27.11 7.83 1039 9.88WBMG 5/25/2010 16:00:00 27.38 7.84 1041 9.82WBMG 5/25/2010 17:00:00 27.33 7.85 1029 9.81WBMG 5/25/2010 18:00:00 27.01 7.82 1035 9.32WBMG 5/25/2010 19:00:00 26.45 7.75 1053 8.19WBMG 5/25/2010 20:00:00 26.15 7.67 1059 7.21WBMG 5/25/2010 21:00:00 26.05 7.64 1061 6.58WBMG 5/25/2010 22:00:00 25.95 7.61 1063 6.15WBMG 5/25/2010 23:00:00 25.81 7.58 1065 5.95WBMG 5/26/2010 0:00:00 25.62 7.56 1059 5.78WBMG 5/26/2010 1:00:00 25.37 7.54 1060 5.64WBMG 5/26/2010 2:00:00 25.07 7.51 1066 5.56WBMG 5/26/2010 3:00:00 24.76 7.48 1075 5.58WBMG 5/26/2010 4:00:00 24.37 7.45 1074 5.51WBMG 5/26/2010 5:00:00 24 7.41 1072 5.52WBMG 5/26/2010 6:00:00 23.64 7.38 1081 5.56WBMG 5/26/2010 7:00:00 23.33 7.36 1082 5.62WBMG 5/26/2010 8:00:00 23.25 7.36 1019 5.98WBMG 5/26/2010 9:00:00 23.39 7.4 887 6.61WBMG 5/26/2010 10:00:00 23.8 7.46 1083 7.33WBMG 5/26/2010 11:00:00 24.49 7.54 1076 8.14

West Branch DuPage River McDowell Grove Forest Preserve Page 7 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 5/26/2010 12:00:00 25.37 7.62 1067 8.94WBMG 5/26/2010 13:00:00 26.08 7.7 1016 9.68WBMG 5/26/2010 14:00:00 26.41 7.76 1044 10.25WBMG 5/26/2010 15:00:00 26.26 7.75 1060 10.04WBMG 5/26/2010 16:00:00 25.64 7.67 1055 9.02WBMG 5/26/2010 17:00:00 25.02 7.57 1038 7.85WBMG 5/26/2010 18:00:00 24.85 7.46 1016 6.58WBMG 5/26/2010 19:00:00 24.66 7.41 929 6.09WBMG 5/26/2010 20:00:00 24.66 7.47 1019 6.62WBMG 5/26/2010 21:00:00 24.78 7.49 1039 6.64WBMG 5/26/2010 22:00:00 24.78 7.46 1040 6.32WBMG 5/26/2010 23:00:00 24.61 7.4 1020 5.97WBMG 5/27/2010 0:00:00 24.52 7.39 1041 6.17WBMG 5/27/2010 1:00:00 24.26 7.37 1032 6.18WBMG 5/27/2010 2:00:00 23.78 7.34 1031 6.34WBMG 5/27/2010 3:00:00 23.16 7.27 995 6.31WBMG 5/27/2010 4:00:00 22.61 7.2 855 6.3WBMG 5/27/2010 5:00:00 22.11 7.14 875 6.3WBMG 5/27/2010 6:00:00 21.73 7.09 817 6.27WBMG 5/27/2010 7:00:00 21.58 7.06 773 6.27WBMG 5/27/2010 8:00:00 21.56 7.05 751 6.27WBMG 5/27/2010 9:00:00 21.61 7.04 735 6.37WBMG 5/27/2010 10:00:00 21.74 7.04 713 6.46WBMG 5/27/2010 11:00:00 21.99 7.04 701 6.59WBMG 5/27/2010 12:00:00 22.17 7.07 710 6.76WBMG 5/27/2010 13:00:00 22.49 7.11 735 6.95WBMG 5/27/2010 14:00:00 23.1 7.17 766 7.26WBMG 5/27/2010 15:00:00 23.67 7.24 794 7.49WBMG 5/27/2010 16:00:00 24 7.28 800 7.56WBMG 5/27/2010 17:00:00 24.14 7.31 743 7.62WBMG 5/27/2010 18:00:00 24.1 7.32 872 7.46WBMG 5/27/2010 19:00:00 23.9 7.3 887 7.19WBMG 5/27/2010 20:00:00 23.72 7.29 899 7.03WBMG 5/27/2010 21:00:00 23.46 7.26 907 6.87WBMG 5/27/2010 22:00:00 23.16 7.24 914 6.8WBMG 5/27/2010 23:00:00 22.81 7.21 919 6.72WBMG 5/28/2010 0:00:00 22.43 7.19 924 6.67WBMG 5/28/2010 1:00:00 22.04 7.16 927 6.67WBMG 5/28/2010 2:00:00 21.66 7.13 926 6.62WBMG 5/28/2010 3:00:00 21.31 7.1 926 6.67WBMG 5/28/2010 4:00:00 20.92 7.1 822 6.63WBMG 5/28/2010 5:00:00 20.6 7.08 929 6.68WBMG 5/28/2010 6:00:00 20.29 7.05 930 6.76WBMG 5/28/2010 7:00:00 20.05 7.04 755 6.82

West Branch DuPage River McDowell Grove Forest Preserve Page 8 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 5/28/2010 8:00:00 19.98 7.07 863 6.91WBMG 5/28/2010 9:00:00 20.07 7.09 935 7.17WBMG 5/28/2010 10:00:00 20.37 7.13 935 7.6WBMG 5/28/2010 11:00:00 20.94 7.21 936 8.05WBMG 5/28/2010 12:00:00 21.65 7.29 939 8.5WBMG 5/28/2010 13:00:00 22.45 7.37 858 8.86WBMG 5/28/2010 14:00:00 23.16 7.44 943 9.14WBMG 5/28/2010 15:00:00 23.61 7.49 949 9.19WBMG 5/28/2010 16:00:00 23.99 7.52 954 9.13WBMG 5/28/2010 17:00:00 24.25 7.53 955 8.97WBMG 5/28/2010 18:00:00 24.27 7.51 957 8.48WBMG 5/28/2010 19:00:00 24.05 7.45 914 7.9WBMG 5/28/2010 20:00:00 23.89 7.41 963 7.38WBMG 5/28/2010 21:00:00 23.82 7.4 966 7.11WBMG 5/28/2010 22:00:00 23.66 7.37 967 6.93WBMG 5/28/2010 23:00:00 23.45 7.34 967 6.73WBMG 5/29/2010 0:00:00 23.22 7.32 972 6.71WBMG 5/29/2010 1:00:00 22.88 7.28 974 6.56WBMG 5/29/2010 2:00:00 22.52 7.24 974 6.49WBMG 5/29/2010 3:00:00 22.15 7.21 973 6.48WBMG 5/29/2010 4:00:00 21.79 7.18 974 6.4WBMG 5/29/2010 5:00:00 21.49 7.16 977 6.44WBMG 5/29/2010 6:00:00 21.17 7.13 976 6.37WBMG 5/29/2010 7:00:00 20.93 7.12 960 6.48WBMG 5/29/2010 8:00:00 20.88 7.13 881 6.76WBMG 5/29/2010 9:00:00 21.03 7.17 973 7.21WBMG 5/29/2010 10:00:00 21.55 7.24 984 7.73WBMG 5/29/2010 11:00:00 22.28 7.33 983 8.46WBMG 5/29/2010 12:00:00 23.1 7.43 984 9.1WBMG 5/29/2010 13:00:00 23.97 7.52 985 9.5WBMG 5/29/2010 14:00:00 24.4 7.58 988 9.82WBMG 5/29/2010 15:00:00 24.87 7.62 991 9.74WBMG 5/29/2010 16:00:00 25.42 7.66 992 9.82WBMG 5/29/2010 17:00:00 25.58 7.69 998 9.78WBMG 5/29/2010 18:00:00 25.55 7.66 1005 9.32WBMG 5/29/2010 19:00:00 25.32 7.6 1002 8.44WBMG 5/29/2010 20:00:00 25.11 7.53 1004 7.58WBMG 5/29/2010 21:00:00 25.08 7.49 1004 6.92WBMG 5/29/2010 22:00:00 25.1 7.47 1012 6.56WBMG 5/29/2010 23:00:00 24.99 7.44 1014 6.36WBMG 5/30/2010 0:00:00 24.8 7.42 1018 6.22WBMG 5/30/2010 1:00:00 24.51 7.39 1018 6.1WBMG 5/30/2010 2:00:00 24.24 7.36 1025 6.06WBMG 5/30/2010 3:00:00 23.87 7.32 1024 5.93

West Branch DuPage River McDowell Grove Forest Preserve Page 9 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 5/30/2010 4:00:00 23.48 7.29 1025 5.87WBMG 5/30/2010 5:00:00 23.12 7.25 914 5.84WBMG 5/30/2010 6:00:00 22.77 7.22 1027 5.82WBMG 5/30/2010 7:00:00 22.51 7.21 1026 5.86WBMG 5/30/2010 8:00:00 22.45 7.22 957 6.19WBMG 5/30/2010 9:00:00 22.6 7.26 968 6.75WBMG 5/30/2010 10:00:00 23.03 7.33 1029 7.54WBMG 5/30/2010 11:00:00 23.72 7.42 872 8.3WBMG 5/30/2010 12:00:00 24.59 7.53 919 9.18WBMG 5/30/2010 13:00:00 25.58 7.64 1026 9.91WBMG 5/30/2010 14:00:00 26.19 7.71 1031 10.33WBMG 5/30/2010 15:00:00 26.61 7.76 1030 10.65WBMG 5/30/2010 16:00:00 26.81 7.75 957 10.31WBMG 5/30/2010 17:00:00 26.63 7.73 963 10.01WBMG 5/30/2010 18:00:00 26.31 7.7 1002 9.41WBMG 5/30/2010 19:00:00 25.98 7.62 1045 8.44WBMG 5/30/2010 20:00:00 25.77 7.56 1044 7.51WBMG 5/30/2010 21:00:00 25.71 7.51 1047 6.75WBMG 5/30/2010 22:00:00 25.69 7.48 1050 6.26WBMG 5/30/2010 23:00:00 25.63 7.45 1051 5.96WBMG 5/31/2010 0:00:00 25.56 7.44 1056 5.86WBMG 5/31/2010 1:00:00 25.46 7.43 1061 5.71WBMG 5/31/2010 2:00:00 25.35 7.41 1063 5.62WBMG 5/31/2010 3:00:00 25.24 7.38 1070 5.53WBMG 5/31/2010 4:00:00 25.06 7.35 1070 5.44WBMG 5/31/2010 5:00:00 24.85 7.32 1073 5.41WBMG 5/31/2010 6:00:00 24.59 7.29 1075 5.32WBMG 5/31/2010 7:00:00 24.37 7.27 1072 5.39WBMG 5/31/2010 8:00:00 24.3 7.27 1075 5.77WBMG 5/31/2010 9:00:00 24.38 7.3 1076 6.4WBMG 5/31/2010 10:00:00 24.68 7.37 1057 7.16WBMG 5/31/2010 11:00:00 24.97 7.43 1076 8.02WBMG 5/31/2010 12:00:00 24.46 7.45 1061 8.06WBMG 5/31/2010 13:00:00 24.03 7.37 1059 7.21WBMG 5/31/2010 14:00:00 23.61 7.29 1051 6.45WBMG 5/31/2010 15:00:00 23.1 7.21 1102 6.05WBMG 5/31/2010 16:00:00 23.41 7.29 996 6.75WBMG 5/31/2010 17:00:00 23.8 7.39 886 7.64WBMG 5/31/2010 18:00:00 23.79 7.39 1000 7.52WBMG 5/31/2010 19:00:00 23.44 7.26 925 6.64WBMG 5/31/2010 20:00:00 23.16 7.17 889 6.18WBMG 5/31/2010 21:00:00 22.9 7.1 864 6.06WBMG 5/31/2010 22:00:00 22.69 7.09 874 6.08WBMG 5/31/2010 23:00:00 22.47 7.06 862 6.11

West Branch DuPage River McDowell Grove Forest Preserve Page 10 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/1/2010 0:00:00 22.23 7.02 823 6.07WBMG 6/1/2010 1:00:00 21.96 6.97 789 6.04WBMG 6/1/2010 2:00:00 21.74 6.95 770 6.03WBMG 6/1/2010 3:00:00 21.52 6.93 762 6.01WBMG 6/1/2010 4:00:00 21.29 6.93 778 6.15WBMG 6/1/2010 5:00:00 21.08 6.93 807 6.19WBMG 6/1/2010 6:00:00 20.89 6.93 839 6.17WBMG 6/1/2010 7:00:00 20.79 6.94 855 6.36WBMG 6/1/2010 8:00:00 20.83 6.96 878 6.43WBMG 6/1/2010 9:00:00 20.96 6.98 891 6.72WBMG 6/1/2010 10:00:00 21.24 7.04 905 7.05WBMG 6/1/2010 11:00:00 21.91 7.12 915 7.54WBMG 6/1/2010 12:00:00 22.51 7.2 919 7.97WBMG 6/1/2010 13:00:00 23.25 7.29 924 8.46WBMG 6/1/2010 14:00:00 23.9 7.38 926 8.92WBMG 6/1/2010 15:00:00 24.37 7.43 930 9.01WBMG 6/1/2010 16:00:00 24.75 7.45 927 8.91WBMG 6/1/2010 17:00:00 24.9 7.46 934 8.72WBMG 6/1/2010 18:00:00 24.99 7.46 917 8.27WBMG 6/1/2010 19:00:00 24.9 7.42 944 7.71WBMG 6/1/2010 20:00:00 24.92 7.4 950 7.23WBMG 6/1/2010 21:00:00 24.96 7.37 954 6.84WBMG 6/1/2010 22:00:00 25.01 7.36 958 6.53WBMG 6/1/2010 23:00:00 24.98 7.34 962 6.39WBMG 6/2/2010 0:00:00 24.86 7.32 933 6.32WBMG 6/2/2010 1:00:00 24.66 7.3 965 6.22WBMG 6/2/2010 2:00:00 24.39 7.27 959 6.09WBMG 6/2/2010 3:00:00 24 7.25 950 6.21WBMG 6/2/2010 4:00:00 23.56 7.25 939 6.43WBMG 6/2/2010 5:00:00 22.79 7.2 884 6.61WBMG 6/2/2010 6:00:00 22.18 7.13 781 6.53WBMG 6/2/2010 7:00:00 22.05 7.11 781 6.46WBMG 6/2/2010 8:00:00 22.07 7.12 835 6.6WBMG 6/2/2010 9:00:00 22.04 7.11 847 6.77WBMG 6/2/2010 10:00:00 21.81 7.05 815 6.64WBMG 6/2/2010 11:00:00 21.68 6.99 721 6.71WBMG 6/2/2010 12:00:00 21.86 6.98 672 6.69WBMG 6/2/2010 13:00:00 22.02 6.98 660 6.64WBMG 6/2/2010 14:00:00 22.15 6.97 646 6.63WBMG 6/2/2010 15:00:00 22.37 6.96 618 6.63WBMG 6/2/2010 16:00:00 22.42 6.96 600 6.68WBMG 6/2/2010 17:00:00 22.57 6.98 608 6.72WBMG 6/2/2010 18:00:00 22.71 7 629 6.73WBMG 6/2/2010 19:00:00 22.82 7.02 652 6.7

West Branch DuPage River McDowell Grove Forest Preserve Page 11 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/2/2010 20:00:00 22.92 7.03 670 6.69WBMG 6/2/2010 21:00:00 22.86 7.05 675 6.65WBMG 6/2/2010 22:00:00 22.59 7.03 666 6.69WBMG 6/2/2010 23:00:00 22.34 7.02 666 6.66WBMG 6/3/2010 0:00:00 22.16 7 678 6.63WBMG 6/3/2010 1:00:00 22 7 702 6.61WBMG 6/3/2010 2:00:00 21.8 7 715 6.6WBMG 6/3/2010 3:00:00 21.58 6.99 661 6.63WBMG 6/3/2010 4:00:00 21.41 6.98 730 6.63WBMG 6/3/2010 5:00:00 21.23 6.97 745 6.55WBMG 6/3/2010 6:00:00 21.03 6.96 658 6.62WBMG 6/3/2010 7:00:00 20.86 6.95 749 6.62WBMG 6/3/2010 8:00:00 20.75 6.95 755 6.71WBMG 6/3/2010 9:00:00 20.75 6.96 770 6.8WBMG 6/3/2010 10:00:00 20.91 6.98 772 6.94WBMG 6/3/2010 11:00:00 21.21 7 779 7.1WBMG 6/3/2010 12:00:00 21.7 7.05 783 7.25WBMG 6/3/2010 13:00:00 22.22 7.11 789 7.39WBMG 6/3/2010 14:00:00 22.85 7.17 794 7.54WBMG 6/3/2010 15:00:00 23.27 7.2 801 7.61WBMG 6/3/2010 16:00:00 23.67 7.24 808 7.66WBMG 6/3/2010 17:00:00 23.87 7.27 818 7.62WBMG 6/3/2010 18:00:00 23.83 7.27 823 7.48WBMG 6/3/2010 19:00:00 23.68 7.26 826 7.34WBMG 6/3/2010 20:00:00 23.5 7.24 825 7.23WBMG 6/3/2010 21:00:00 23.24 7.22 824 7.18WBMG 6/3/2010 22:00:00 22.95 7.2 826 7.12WBMG 6/3/2010 23:00:00 22.61 7.17 780 7.04WBMG 6/4/2010 0:00:00 22.25 7.14 783 7WBMG 6/4/2010 1:00:00 21.9 7.12 838 7.01WBMG 6/4/2010 2:00:00 21.58 7.09 843 6.94WBMG 6/4/2010 3:00:00 21.27 7.07 843 6.97WBMG 6/4/2010 4:00:00 20.99 7.05 851 6.9WBMG 6/4/2010 5:00:00 20.74 7.03 853 6.93WBMG 6/4/2010 6:00:00 20.5 7.01 857 6.95WBMG 6/4/2010 7:00:00 20.35 7 862 6.99WBMG 6/4/2010 8:00:00 20.31 7 864 7.13WBMG 6/4/2010 9:00:00 20.33 7.01 865 7.25WBMG 6/4/2010 10:00:00 20.32 7.02 869 7.3WBMG 6/4/2010 11:00:00 20.44 7.17 871 7.51WBMG 6/4/2010 12:00:00 20.84 7.19 874 7.74WBMG 6/4/2010 13:00:00 21.31 7.25 877 8.05WBMG 6/4/2010 14:00:00 21.62 7.28 881 8.06WBMG 6/4/2010 15:00:00 22.01 7.32 886 8.18

West Branch DuPage River McDowell Grove Forest Preserve Page 12 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/4/2010 16:00:00 22.1 7.32 889 8WBMG 6/4/2010 17:00:00 22.53 7.36 892 8.09WBMG 6/4/2010 18:00:00 22.73 7.36 897 7.94WBMG 6/4/2010 19:00:00 22.83 7.36 900 7.71WBMG 6/4/2010 20:00:00 22.92 7.36 901 7.46WBMG 6/4/2010 21:00:00 22.88 7.34 901 7.3WBMG 6/4/2010 22:00:00 22.81 7.33 899 7.15WBMG 6/4/2010 23:00:00 22.71 7.31 904 7.03WBMG 6/5/2010 0:00:00 22.55 7.28 908 6.87WBMG 6/5/2010 1:00:00 22.37 7.26 907 6.9WBMG 6/5/2010 2:00:00 22.2 7.24 909 6.82WBMG 6/5/2010 3:00:00 22.01 7.22 911 6.83WBMG 6/5/2010 4:00:00 21.82 7.2 915 6.6WBMG 6/5/2010 5:00:00 21.63 7.18 915 6.77WBMG 6/5/2010 6:00:00 21.45 7.17 916 6.72WBMG 6/5/2010 7:00:00 21.32 7.16 918 6.79WBMG 6/5/2010 8:00:00 21.24 7.15 924 6.85WBMG 6/5/2010 9:00:00 21.16 7.14 921 6.93WBMG 6/5/2010 10:00:00 21.04 7.13 917 6.9WBMG 6/5/2010 11:00:00 21.01 7.14 914 7.01WBMG 6/5/2010 12:00:00 21.17 7.16 913 7.28WBMG 6/5/2010 13:00:00 21.67 7.2 927 7.61WBMG 6/5/2010 14:00:00 22.04 7.25 907 7.81WBMG 6/5/2010 15:00:00 21.95 7.2 866 7.32WBMG 6/5/2010 16:00:00 22 7.15 792 7.06WBMG 6/5/2010 17:00:00 22.06 7.11 724 7WBMG 6/5/2010 18:00:00 22 7.09 703 7.07WBMG 6/5/2010 19:00:00 21.89 7.06 666 7.01WBMG 6/5/2010 20:00:00 21.75 7.02 630 6.9WBMG 6/5/2010 21:00:00 21.65 6.99 602 6.81WBMG 6/5/2010 22:00:00 21.56 6.96 591 6.79WBMG 6/5/2010 23:00:00 21.47 6.97 605 6.75WBMG 6/6/2010 0:00:00 21.3 6.96 623 6.71WBMG 6/6/2010 1:00:00 21.2 6.96 642 6.67WBMG 6/6/2010 2:00:00 21.06 6.97 656 6.73WBMG 6/6/2010 3:00:00 20.91 6.97 669 6.75WBMG 6/6/2010 4:00:00 20.72 6.97 681 6.79WBMG 6/6/2010 5:00:00 20.54 6.96 695 6.78WBMG 6/6/2010 6:00:00 20.36 6.96 707 6.81WBMG 6/6/2010 7:00:00 20.22 6.95 709 6.88WBMG 6/6/2010 8:00:00 20.16 6.96 712 6.92WBMG 6/6/2010 9:00:00 20.22 6.97 719 7.04WBMG 6/6/2010 10:00:00 20.41 6.99 720 7.14WBMG 6/6/2010 11:00:00 20.77 7.03 724 7.27

West Branch DuPage River McDowell Grove Forest Preserve Page 13 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/6/2010 12:00:00 21.2 7.07 730 7.41WBMG 6/6/2010 13:00:00 21.63 7.11 733 7.48WBMG 6/6/2010 14:00:00 21.94 7.14 739 7.53WBMG 6/6/2010 15:00:00 22.26 7.18 745 7.56WBMG 6/6/2010 16:00:00 22.15 7.18 750 7.52WBMG 6/6/2010 17:00:00 22.16 7.18 758 7.43WBMG 6/6/2010 18:00:00 22.15 7.19 763 7.44WBMG 6/6/2010 19:00:00 21.97 7.18 768 7.38WBMG 6/6/2010 20:00:00 21.83 7.16 770 7.33WBMG 6/6/2010 21:00:00 21.61 7.14 774 7.29WBMG 6/6/2010 22:00:00 21.39 7.12 794 7.14WBMG 6/6/2010 23:00:00 21.13 7.11 793 7.18WBMG 6/7/2010 0:00:00 20.86 7.09 790 7.23WBMG 6/7/2010 1:00:00 20.57 7.07 793 7.23WBMG 6/7/2010 2:00:00 20.27 7.04 802 7.2WBMG 6/7/2010 3:00:00 19.97 7.02 804 7.21WBMG 6/7/2010 4:00:00 19.67 7 803 7.24WBMG 6/7/2010 5:00:00 19.43 6.98 794 7.28WBMG 6/7/2010 6:00:00 19.21 6.96 796 7.28WBMG 6/7/2010 7:00:00 19.06 6.95 797 7.32WBMG 6/7/2010 8:00:00 19.06 6.94 797 7.37WBMG 6/7/2010 9:00:00 19.19 6.96 802 7.46WBMG 6/7/2010 10:00:00 19.45 6.99 805 7.64WBMG 6/7/2010 11:00:00 19.94 7.05 807 7.85WBMG 6/7/2010 12:00:00 20.38 7.09 807 8.03WBMG 6/7/2010 13:00:00 20.63 7.12 811 8.05WBMG 6/7/2010 14:00:00 21 7.16 816 8.04WBMG 6/7/2010 15:00:00 21.56 7.22 819 8.19WBMG 6/7/2010 16:00:00 22.07 7.26 824 8.3WBMG 6/7/2010 17:00:00 22.16 7.28 831 8.26WBMG 6/7/2010 18:00:00 22.19 7.27 837 8.13WBMG 6/7/2010 19:00:00 22.01 7.25 836 7.87WBMG 6/7/2010 20:00:00 21.96 7.24 844 7.67WBMG 6/7/2010 21:00:00 21.87 7.23 840 7.55WBMG 6/7/2010 22:00:00 21.61 7.2 841 7.47WBMG 6/7/2010 23:00:00 21.26 7.17 846 7.37WBMG 6/8/2010 0:00:00 20.95 7.14 843 7.38WBMG 6/8/2010 1:00:00 20.67 7.12 849 7.3WBMG 6/8/2010 2:00:00 20.38 7.09 855 7.2WBMG 6/8/2010 3:00:00 20.12 7.06 856 7.21WBMG 6/8/2010 4:00:00 19.86 7.04 860 7.18WBMG 6/8/2010 5:00:00 19.63 7.01 864 7.18WBMG 6/8/2010 6:00:00 19.41 7 868 7.22WBMG 6/8/2010 7:00:00 19.2 6.98 868 7.2

West Branch DuPage River McDowell Grove Forest Preserve Page 14 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/8/2010 8:00:00 19.04 6.97 868 7.31WBMG 6/8/2010 9:00:00 18.89 6.96 870 7.31WBMG 6/8/2010 10:00:00 18.84 6.96 868 7.45WBMG 6/8/2010 11:00:00 18.8 6.96 866 7.59WBMG 6/8/2010 12:00:00 18.83 6.98 867 7.73WBMG 6/8/2010 13:00:00 18.83 6.99 867 7.85WBMG 6/8/2010 14:00:00 18.83 7 868 7.89WBMG 6/8/2010 15:00:00 18.88 7.02 871 8.03WBMG 6/8/2010 16:00:00 18.79 7.01 871 8.02WBMG 6/8/2010 17:00:00 18.74 7 878 7.9WBMG 6/8/2010 18:00:00 18.68 6.99 877 7.85WBMG 6/8/2010 19:00:00 18.69 6.98 881 7.74WBMG 6/8/2010 20:00:00 18.64 6.97 884 7.63WBMG 6/8/2010 21:00:00 18.61 6.96 879 7.64WBMG 6/8/2010 22:00:00 18.54 6.96 873 7.64WBMG 6/8/2010 23:00:00 18.5 6.94 873 7.62WBMG 6/9/2010 0:00:00 18.45 6.93 876 7.52WBMG 6/9/2010 1:00:00 18.37 6.91 877 7.51WBMG 6/9/2010 2:00:00 18.33 6.9 878 7.48WBMG 6/9/2010 3:00:00 18.28 6.89 880 7.51WBMG 6/9/2010 4:00:00 18.3 6.89 881 7.44WBMG 6/9/2010 5:00:00 18.29 6.89 878 7.44WBMG 6/9/2010 6:00:00 18.26 6.87 876 7.4WBMG 6/9/2010 7:00:00 18.25 6.88 867 7.45WBMG 6/9/2010 8:00:00 18.35 6.89 861 7.54WBMG 6/9/2010 9:00:00 18.56 6.91 860 7.69WBMG 6/9/2010 10:00:00 18.95 6.95 860 7.82WBMG 6/9/2010 11:00:00 19.43 7.01 868 8WBMG 6/9/2010 12:00:00 20.27 7.09 873 8.26WBMG 6/9/2010 13:00:00 21.05 7.16 881 8.42WBMG 6/9/2010 14:00:00 21.64 7.23 884 8.55WBMG 6/9/2010 15:00:00 22.09 7.26 888 8.48WBMG 6/9/2010 16:00:00 22.74 7.33 892 8.61WBMG 6/9/2010 17:00:00 23.12 7.35 890 8.52WBMG 6/9/2010 18:00:00 23.18 7.35 889 8.21WBMG 6/9/2010 19:00:00 23.13 7.33 896 7.82WBMG 6/9/2010 20:00:00 23 7.31 892 7.53WBMG 6/9/2010 21:00:00 22.95 7.3 893 7.41WBMG 6/9/2010 22:00:00 22.79 7.29 896 7.29WBMG 6/9/2010 23:00:00 22.55 7.27 899 7.21WBMG 6/10/2010 0:00:00 22.25 7.24 900 7.16WBMG 6/10/2010 1:00:00 21.92 7.21 903 7.08WBMG 6/10/2010 2:00:00 21.56 7.18 908 7.01WBMG 6/10/2010 3:00:00 21.19 7.15 907 6.98

West Branch DuPage River McDowell Grove Forest Preserve Page 15 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/10/2010 4:00:00 20.84 7.11 915 6.85WBMG 6/10/2010 5:00:00 20.49 7.08 915 6.88WBMG 6/10/2010 6:00:00 20.18 7.06 913 6.96WBMG 6/10/2010 7:00:00 19.99 7.04 917 7.11WBMG 6/10/2010 8:00:00 19.93 7.05 918 7.31WBMG 6/10/2010 9:00:00 19.98 7.06 923 7.51WBMG 6/10/2010 10:00:00 20.27 7.1 921 7.93WBMG 6/10/2010 11:00:00 20.73 7.17 922 8.33WBMG 6/10/2010 12:00:00 21.36 7.24 924 8.71WBMG 6/10/2010 13:00:00 21.66 7.28 926 8.84WBMG 6/10/2010 14:00:00 22.17 7.32 926 8.9WBMG 6/10/2010 15:00:00 22.79 7.38 927 9.08WBMG 6/10/2010 16:00:00 22.9 7.41 928 9.1WBMG 6/10/2010 17:00:00 22.81 7.39 928 8.66WBMG 6/10/2010 18:00:00 22.88 7.38 932 8.3WBMG 6/10/2010 19:00:00 22.87 7.37 936 8WBMG 6/10/2010 20:00:00 22.84 7.35 942 7.68WBMG 6/10/2010 21:00:00 22.77 7.34 943 7.47WBMG 6/10/2010 22:00:00 22.66 7.32 946 7.21WBMG 6/10/2010 23:00:00 22.55 7.29 947 7.1WBMG 6/11/2010 0:00:00 22.34 7.27 950 6.94WBMG 6/11/2010 1:00:00 22.08 7.24 953 6.85WBMG 6/11/2010 2:00:00 21.82 7.21 949 6.87WBMG 6/11/2010 3:00:00 21.56 7.19 948 6.86WBMG 6/11/2010 4:00:00 21.28 7.16 948 6.76WBMG 6/11/2010 5:00:00 21.04 7.16 945 6.86WBMG 6/11/2010 6:00:00 20.79 7.14 944 6.87WBMG 6/11/2010 7:00:00 20.59 7.12 953 6.86WBMG 6/11/2010 8:00:00 20.62 7.13 952 7.12WBMG 6/11/2010 9:00:00 20.78 7.17 951 7.51WBMG 6/11/2010 10:00:00 21.21 7.22 952 7.92WBMG 6/11/2010 11:00:00 21.88 7.29 960 8.31WBMG 6/11/2010 12:00:00 22.28 7.34 959 8.69WBMG 6/11/2010 13:00:00 22.31 7.34 954 8.52WBMG 6/11/2010 14:00:00 22.6 7.35 953 8.24WBMG 6/11/2010 15:00:00 23.46 7.64 959 8.6WBMG 6/11/2010 16:00:00 23.76 7.52 963 8.76WBMG 6/11/2010 17:00:00 24.1 7.56 966 8.75WBMG 6/11/2010 18:00:00 24.27 7.57 963 8.59WBMG 6/11/2010 19:00:00 24.34 7.56 968 8.25WBMG 6/11/2010 20:00:00 24.25 7.53 973 7.81WBMG 6/11/2010 21:00:00 24.31 7.49 974 7.27WBMG 6/11/2010 22:00:00 24.35 7.47 978 6.98WBMG 6/11/2010 23:00:00 24.39 7.47 980 6.83

West Branch DuPage River McDowell Grove Forest Preserve Page 16 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/12/2010 0:00:00 24.37 7.47 984 6.86WBMG 6/12/2010 1:00:00 24.29 7.45 988 6.8WBMG 6/12/2010 2:00:00 24.15 7.43 990 6.64WBMG 6/12/2010 3:00:00 23.95 7.4 993 6.58WBMG 6/12/2010 4:00:00 23.74 7.37 995 6.45WBMG 6/12/2010 5:00:00 23.54 7.35 994 6.44WBMG 6/12/2010 6:00:00 23.35 7.32 993 6.35WBMG 6/12/2010 7:00:00 23.19 7.31 993 6.42WBMG 6/12/2010 8:00:00 23.09 7.28 992 6.4WBMG 6/12/2010 9:00:00 23.05 7.3 992 6.72WBMG 6/12/2010 10:00:00 23.03 7.3 995 6.87WBMG 6/12/2010 11:00:00 22.75 7.3 983 7WBMG 6/12/2010 12:00:00 22.56 7.29 978 6.89WBMG 6/12/2010 13:00:00 22.49 7.28 984 7.03WBMG 6/12/2010 14:00:00 23.2 7.34 990 7.6WBMG 6/12/2010 15:00:00 23.83 7.45 973 8.49WBMG 6/12/2010 16:00:00 23.97 7.49 975 8.72WBMG 6/12/2010 17:00:00 23.66 7.44 979 8.09WBMG 6/12/2010 18:00:00 23.36 7.36 977 7.22WBMG 6/12/2010 19:00:00 23.24 7.36 972 7.27WBMG 6/12/2010 20:00:00 23.08 7.36 980 7.32WBMG 6/12/2010 21:00:00 22.99 7.33 981 7.04WBMG 6/12/2010 22:00:00 22.94 7.33 983 6.84WBMG 6/12/2010 23:00:00 22.86 7.3 987 6.74WBMG 6/13/2010 0:00:00 22.7 7.3 986 6.79WBMG 6/13/2010 1:00:00 22.41 7.26 982 6.76WBMG 6/13/2010 2:00:00 22.04 7.22 977 6.75WBMG 6/13/2010 3:00:00 21.74 7.21 977 6.89WBMG 6/13/2010 4:00:00 21.47 7.17 973 6.67WBMG 6/13/2010 5:00:00 21.23 7.17 973 6.83WBMG 6/13/2010 6:00:00 21.02 7.16 970 6.91WBMG 6/13/2010 7:00:00 20.85 7.14 959 6.91WBMG 6/13/2010 8:00:00 20.74 7.12 935 6.86WBMG 6/13/2010 9:00:00 20.72 7.11 904 6.94WBMG 6/13/2010 10:00:00 20.76 7.1 872 7.09WBMG 6/13/2010 11:00:00 20.87 7.11 850 7.31WBMG 6/13/2010 12:00:00 21.05 7.13 851 7.39WBMG 6/13/2010 13:00:00 21.5 7.18 857 7.73WBMG 6/13/2010 14:00:00 21.86 7.24 869 8.05WBMG 6/13/2010 15:00:00 21.77 7.23 876 7.92WBMG 6/13/2010 16:00:00 21.63 7.2 878 7.56WBMG 6/13/2010 17:00:00 21.89 7.23 893 7.58WBMG 6/13/2010 18:00:00 21.98 7.24 894 7.78WBMG 6/13/2010 19:00:00 21.97 7.24 904 7.65

West Branch DuPage River McDowell Grove Forest Preserve Page 17 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/13/2010 20:00:00 21.95 7.23 910 7.4WBMG 6/13/2010 21:00:00 21.89 7.21 909 7.17WBMG 6/13/2010 22:00:00 21.86 7.2 907 6.99WBMG 6/13/2010 23:00:00 21.75 7.2 907 7.01WBMG 6/14/2010 0:00:00 21.68 7.19 914 6.91WBMG 6/14/2010 1:00:00 21.56 7.18 917 6.96WBMG 6/14/2010 2:00:00 21.47 7.17 918 6.9WBMG 6/14/2010 3:00:00 21.32 7.16 926 6.94WBMG 6/14/2010 4:00:00 21.22 7.15 929 6.86WBMG 6/14/2010 5:00:00 21.09 7.14 929 6.88WBMG 6/14/2010 6:00:00 20.95 7.13 926 6.86WBMG 6/14/2010 7:00:00 20.88 7.13 927 6.92WBMG 6/14/2010 8:00:00 20.87 7.14 932 7.17WBMG 6/14/2010 9:00:00 21.01 7.16 931 7.41WBMG 6/14/2010 10:00:00 21.1 7.19 934 7.79WBMG 6/14/2010 11:00:00 20.98 7.18 936 7.76WBMG 6/14/2010 12:00:00 20.95 7.18 938 7.66WBMG 6/14/2010 13:00:00 21.09 7.2 936 7.9WBMG 6/14/2010 14:00:00 21.33 7.24 941 8.23WBMG 6/14/2010 15:00:00 21.43 7.28 943 8.44WBMG 6/14/2010 16:00:00 21.41 7.27 942 8.31WBMG 6/14/2010 17:00:00 21.65 7.3 943 8.45WBMG 6/14/2010 18:00:00 21.71 7.31 944 8.48WBMG 6/14/2010 19:00:00 21.7 7.31 947 8.3WBMG 6/14/2010 20:00:00 21.65 7.29 948 8.01WBMG 6/14/2010 21:00:00 21.49 7.27 952 7.69WBMG 6/14/2010 22:00:00 21.34 7.25 953 7.42WBMG 6/14/2010 23:00:00 21.2 7.24 954 7.32WBMG 6/15/2010 0:00:00 21.06 7.24 955 7.39WBMG 6/15/2010 1:00:00 20.9 7.22 956 7.38WBMG 6/15/2010 2:00:00 20.7 7.2 957 7.24WBMG 6/15/2010 3:00:00 20.51 7.18 959 7.21WBMG 6/15/2010 4:00:00 20.31 7.15 964 7.18WBMG 6/15/2010 5:00:00 20.11 7.13 964 7.19WBMG 6/15/2010 6:00:00 19.91 7.11 961 7.09WBMG 6/15/2010 7:00:00 19.78 7.1 957 7.19WBMG 6/15/2010 8:00:00 19.75 7.1 956 7.38WBMG 6/15/2010 9:00:00 19.89 7.13 954 7.7WBMG 6/15/2010 10:00:00 20.21 7.18 954 8.14WBMG 6/15/2010 11:00:00 20.41 7.22 955 8.42WBMG 6/15/2010 12:00:00 20.67 7.25 957 8.67WBMG 6/15/2010 13:00:00 20.99 7.3 956 8.93WBMG 6/15/2010 14:00:00 20.98 7.3 959 8.89WBMG 6/15/2010 15:00:00 20.99 7.28 962 8.54

West Branch DuPage River McDowell Grove Forest Preserve Page 18 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/15/2010 16:00:00 21.21 7.29 963 8.5WBMG 6/15/2010 17:00:00 21.37 7.32 964 8.56WBMG 6/15/2010 18:00:00 21.35 7.32 960 8.31WBMG 6/15/2010 19:00:00 21.38 7.3 963 7.92WBMG 6/15/2010 20:00:00 21.48 7.26 955 7.63WBMG 6/15/2010 21:00:00 21.62 7.28 953 7.55WBMG 6/15/2010 22:00:00 21.55 7.26 921 7.65WBMG 6/15/2010 23:00:00 21.5 7.22 856 7.52WBMG 6/16/2010 0:00:00 21.33 7.13 772 7.31WBMG 6/16/2010 1:00:00 20.99 7.06 723 7.26WBMG 6/16/2010 2:00:00 20.87 7.01 659 7.17WBMG 6/16/2010 3:00:00 20.83 6.96 594 7WBMG 6/16/2010 4:00:00 20.77 6.91 574 6.94WBMG 6/16/2010 5:00:00 20.66 6.9 566 6.91WBMG 6/16/2010 6:00:00 20.53 6.9 574 6.96WBMG 6/16/2010 7:00:00 20.41 6.9 612 6.88WBMG 6/16/2010 8:00:00 20.35 6.92 644 7WBMG 6/16/2010 9:00:00 20.43 6.95 677 7.07WBMG 6/16/2010 10:00:00 20.7 6.98 698 7.14WBMG 6/16/2010 11:00:00 21.18 7.02 712 7.23WBMG 6/16/2010 12:00:00 21.63 7.06 721 7.26WBMG 6/16/2010 13:00:00 22.05 7.1 723 7.29WBMG 6/16/2010 14:00:00 22.73 7.14 725 7.35WBMG 6/16/2010 15:00:00 23.18 7.17 730 7.39WBMG 6/16/2010 16:00:00 23.43 7.2 736 7.4WBMG 6/16/2010 17:00:00 23.69 7.22 742 7.36WBMG 6/16/2010 18:00:00 23.87 7.23 752 7.32WBMG 6/16/2010 19:00:00 23.93 7.25 761 7.27WBMG 6/16/2010 20:00:00 23.92 7.25 769 7.22WBMG 6/16/2010 21:00:00 23.78 7.25 778 7.16WBMG 6/16/2010 22:00:00 23.54 7.24 781 7.11WBMG 6/16/2010 23:00:00 23.33 7.22 786 7.05WBMG 6/17/2010 0:00:00 23.09 7.2 787 7.06WBMG 6/17/2010 1:00:00 22.87 7.19 791 7.02WBMG 6/17/2010 2:00:00 22.64 7.16 796 6.99WBMG 6/17/2010 3:00:00 22.39 7.15 794 6.98WBMG 6/17/2010 4:00:00 22.17 7.13 798 6.96WBMG 6/17/2010 5:00:00 21.96 7.12 800 6.96WBMG 6/17/2010 6:00:00 21.76 7.09 811 6.82WBMG 6/17/2010 7:00:00 21.64 7.09 806 6.98WBMG 6/17/2010 8:00:00 21.65 7.09 811 6.99WBMG 6/17/2010 9:00:00 21.79 7.11 808 7.2WBMG 6/17/2010 10:00:00 22.15 7.15 810 7.38WBMG 6/17/2010 11:00:00 22.57 7.19 809 7.61

West Branch DuPage River McDowell Grove Forest Preserve Page 19 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/17/2010 12:00:00 23.04 7.23 811 7.78WBMG 6/17/2010 13:00:00 23.55 7.29 814 7.98WBMG 6/17/2010 14:00:00 24.41 7.36 829 8.27WBMG 6/17/2010 15:00:00 24.69 7.93 841 8.19WBMG 6/17/2010 16:00:00 25.18 7.95 843 8.37WBMG 6/17/2010 17:00:00 25.4 7.96 848 8.33WBMG 6/17/2010 18:00:00 25.35 7.95 852 8.15WBMG 6/17/2010 19:00:00 25.16 7.91 852 7.74WBMG 6/17/2010 20:00:00 25.19 7.9 858 7.48WBMG 6/17/2010 21:00:00 25.18 7.88 857 7.31WBMG 6/17/2010 22:00:00 25.06 7.87 856 7.21WBMG 6/17/2010 23:00:00 24.87 7.85 855 7.11WBMG 6/18/2010 0:00:00 24.63 7.83 858 6.93WBMG 6/18/2010 1:00:00 24.39 7.81 860 6.92WBMG 6/18/2010 2:00:00 24.13 7.79 860 6.87WBMG 6/18/2010 3:00:00 23.88 7.76 863 6.75WBMG 6/18/2010 4:00:00 23.63 7.74 864 6.76WBMG 6/18/2010 5:00:00 23.34 7.74 856 6.91WBMG 6/18/2010 6:00:00 23.07 7.71 868 6.74WBMG 6/18/2010 7:00:00 22.77 7.67 871 6.66WBMG 6/18/2010 8:00:00 22.74 7.66 886 6.69WBMG 6/18/2010 9:00:00 22.93 7.7 878 7.13WBMG 6/18/2010 10:00:00 23.33 7.72 874 7.46WBMG 6/18/2010 11:00:00 23.85 7.77 871 7.99WBMG 6/18/2010 12:00:00 24.58 7.82 872 8.39WBMG 6/18/2010 13:00:00 25.33 7.87 870 8.54WBMG 6/18/2010 14:00:00 25.78 7.88 873 8.78WBMG 6/18/2010 15:00:00 26.25 7.89 882 8.63WBMG 6/18/2010 16:00:00 25.82 7.86 887 8.06WBMG 6/18/2010 17:00:00 25.43 7.82 880 7.3WBMG 6/18/2010 18:00:00 25.46 7.79 870 6.87WBMG 6/18/2010 19:00:00 25.43 7.79 885 6.95WBMG 6/18/2010 20:00:00 25.48 7.79 880 6.98WBMG 6/18/2010 21:00:00 25.34 7.76 855 6.74WBMG 6/18/2010 22:00:00 24.89 7.75 846 6.83WBMG 6/18/2010 23:00:00 24.43 7.71 811 6.64WBMG 6/19/2010 0:00:00 23.99 7.67 809 6.73WBMG 6/19/2010 1:00:00 23.52 7.63 791 6.48WBMG 6/19/2010 2:00:00 23.07 7.61 817 6.71WBMG 6/19/2010 3:00:00 22.66 7.58 814 6.76WBMG 6/19/2010 4:00:00 22.41 7.54 793 6.71WBMG 6/19/2010 5:00:00 22.13 7.48 777 6.63WBMG 6/19/2010 6:00:00 21.88 7.46 743 6.53WBMG 6/19/2010 7:00:00 21.72 7.44 727 6.67

West Branch DuPage River McDowell Grove Forest Preserve Page 20 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/19/2010 8:00:00 21.74 7.44 726 6.69WBMG 6/19/2010 9:00:00 21.99 7.43 721 6.75WBMG 6/19/2010 10:00:00 22.31 7.44 709 6.8WBMG 6/19/2010 11:00:00 22.62 7.46 693 6.84WBMG 6/19/2010 12:00:00 23.06 7.46 686 6.83WBMG 6/19/2010 13:00:00 23.68 7.47 685 6.87WBMG 6/19/2010 14:00:00 24.27 7.51 687 6.94WBMG 6/19/2010 15:00:00 24.72 7.53 686 7.01WBMG 6/19/2010 16:00:00 25.11 7.56 683 7.05WBMG 6/19/2010 17:00:00 25.26 7.58 685 7.06WBMG 6/19/2010 18:00:00 25.17 7.58 690 7.02WBMG 6/19/2010 19:00:00 25.1 7.6 699 6.96WBMG 6/19/2010 20:00:00 25.01 7.59 707 6.9WBMG 6/19/2010 21:00:00 24.8 7.58 714 6.84WBMG 6/19/2010 22:00:00 24.54 7.57 719 6.79WBMG 6/19/2010 23:00:00 24.29 7.56 724 6.79WBMG 6/20/2010 0:00:00 24.09 7.55 730 6.69WBMG 6/20/2010 1:00:00 23.86 7.54 737 6.62WBMG 6/20/2010 2:00:00 23.58 7.53 738 6.7WBMG 6/20/2010 3:00:00 23.34 7.51 746 6.67WBMG 6/20/2010 4:00:00 23.12 7.49 754 6.59WBMG 6/20/2010 5:00:00 22.96 7.48 765 6.34WBMG 6/20/2010 6:00:00 22.69 7.47 764 6.66WBMG 6/20/2010 7:00:00 22.63 7.47 771 6.67WBMG 6/20/2010 8:00:00 22.57 7.47 774 6.72WBMG 6/20/2010 9:00:00 22.51 7.47 780 6.71WBMG 6/20/2010 10:00:00 22.59 7.48 784 6.87WBMG 6/20/2010 11:00:00 22.85 7.51 788 7.16WBMG 6/20/2010 12:00:00 23.1 7.54 793 7.33WBMG 6/20/2010 13:00:00 23.29 7.55 797 7.44WBMG 6/20/2010 14:00:00 23.81 7.59 800 7.64WBMG 6/20/2010 15:00:00 24.43 7.66 804 7.99WBMG 6/20/2010 16:00:00 24.81 7.69 808 8.08WBMG 6/20/2010 17:00:00 25.18 7.71 809 8.01WBMG 6/20/2010 18:00:00 24.96 7.68 817 7.69WBMG 6/20/2010 19:00:00 25.06 7.68 819 7.52WBMG 6/20/2010 20:00:00 24.84 7.67 824 7.37WBMG 6/20/2010 21:00:00 24.82 7.66 825 7.14WBMG 6/20/2010 22:00:00 24.7 7.65 831 7.1WBMG 6/20/2010 23:00:00 24.51 7.62 827 6.78WBMG 6/21/2010 0:00:00 24.24 7.6 831 6.78WBMG 6/21/2010 1:00:00 23.98 7.59 835 6.8WBMG 6/21/2010 2:00:00 23.71 7.56 837 6.76WBMG 6/21/2010 3:00:00 23.44 7.54 836 6.72

West Branch DuPage River McDowell Grove Forest Preserve Page 21 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/21/2010 4:00:00 23.17 7.53 842 6.74WBMG 6/21/2010 5:00:00 22.91 7.51 842 6.55WBMG 6/21/2010 6:00:00 22.69 7.5 846 6.63WBMG 6/21/2010 7:00:00 22.54 7.49 850 6.72WBMG 6/21/2010 8:00:00 22.35 7.48 857 6.86WBMG 6/21/2010 9:00:00 22.19 7.47 855 6.76WBMG 6/21/2010 10:00:00 22.12 7.47 858 6.9WBMG 6/21/2010 11:00:00 22.22 7.49 861 7.12WBMG 6/21/2010 12:00:00 22.48 7.52 857 7.46WBMG 6/21/2010 13:00:00 22.72 7.55 863 7.73WBMG 6/21/2010 14:00:00 23.58 7.63 863 8.21WBMG 6/21/2010 15:00:00 24.15 7.69 866 8.66WBMG 6/21/2010 16:00:00 24.37 7.71 872 8.65WBMG 6/21/2010 17:00:00 24.34 7.7 877 8.37WBMG 6/21/2010 18:00:00 24.47 7.69 881 8.17WBMG 6/21/2010 19:00:00 24.43 7.68 886 7.84WBMG 6/21/2010 20:00:00 24.47 7.67 889 7.55WBMG 6/21/2010 21:00:00 24.51 7.65 891 7.24WBMG 6/21/2010 22:00:00 24.57 7.64 896 7.04WBMG 6/21/2010 23:00:00 24.52 7.63 889 6.94WBMG 6/22/2010 0:00:00 24.27 7.63 882 7.01WBMG 6/22/2010 1:00:00 24.07 7.57 859 6.62WBMG 6/22/2010 2:00:00 23.83 7.53 889 6.57WBMG 6/22/2010 3:00:00 23.79 7.52 873 6.45WBMG 6/22/2010 4:00:00 23.59 7.51 889 6.45WBMG 6/22/2010 5:00:00 23.4 7.49 887 6.37WBMG 6/22/2010 6:00:00 23.19 7.46 890 6.3WBMG 6/22/2010 7:00:00 23.04 7.46 905 6.47WBMG 6/22/2010 8:00:00 23.06 7.47 899 6.7WBMG 6/22/2010 9:00:00 23.23 7.5 905 7.05WBMG 6/22/2010 10:00:00 23.55 7.54 913 7.52WBMG 6/22/2010 11:00:00 23.84 7.59 917 7.99WBMG 6/22/2010 12:00:00 23.87 7.58 919 7.92WBMG 6/22/2010 13:00:00 24.48 7.64 922 8.29WBMG 6/22/2010 14:00:00 24.87 7.69 921 8.63WBMG 6/22/2010 15:00:00 24.99 7.7 926 8.59WBMG 6/22/2010 16:00:00 25.71 7.76 928 8.9WBMG 6/22/2010 17:00:00 26.06 7.8 931 9.02WBMG 6/22/2010 18:00:00 26.05 7.78 940 8.71WBMG 6/22/2010 19:00:00 25.91 7.74 940 7.93WBMG 6/22/2010 20:00:00 25.79 7.7 949 7.35WBMG 6/22/2010 21:00:00 25.78 7.67 946 6.95WBMG 6/22/2010 22:00:00 25.75 7.66 960 6.81WBMG 6/22/2010 23:00:00 25.74 7.65 965 6.72

West Branch DuPage River McDowell Grove Forest Preserve Page 22 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/23/2010 0:00:00 25.67 7.64 957 6.52WBMG 6/23/2010 1:00:00 25.57 7.63 958 6.44WBMG 6/23/2010 2:00:00 25.4 7.6 956 6.27WBMG 6/23/2010 3:00:00 25.23 7.58 960 6.28WBMG 6/23/2010 4:00:00 25.01 7.55 958 6.13WBMG 6/23/2010 5:00:00 24.79 7.53 954 6.07WBMG 6/23/2010 6:00:00 24.61 7.51 961 6.05WBMG 6/23/2010 7:00:00 24.4 7.5 969 6.11WBMG 6/23/2010 8:00:00 24.25 7.48 964 6.08WBMG 6/23/2010 9:00:00 24.01 7.47 963 6.17WBMG 6/23/2010 10:00:00 23.74 7.47 955 6.36WBMG 6/23/2010 11:00:00 23.61 7.48 953 6.51WBMG 6/23/2010 12:00:00 23.53 7.47 933 6.71WBMG 6/23/2010 13:00:00 23.77 7.5 940 7.11WBMG 6/23/2010 14:00:00 24.26 7.57 939 7.81WBMG 6/23/2010 15:00:00 24.99 7.65 939 8.45WBMG 6/23/2010 16:00:00 25.21 7.67 936 8.4WBMG 6/23/2010 17:00:00 25.03 7.63 937 7.89WBMG 6/23/2010 18:00:00 24.79 7.57 935 7.06WBMG 6/23/2010 19:00:00 24.54 7.54 886 6.68WBMG 6/23/2010 20:00:00 24.52 7.52 829 6.63WBMG 6/23/2010 21:00:00 24.64 7.54 781 6.56WBMG 6/23/2010 22:00:00 24.48 7.51 816 6.62WBMG 6/23/2010 23:00:00 24.08 7.43 759 6.56WBMG 6/24/2010 0:00:00 23.65 7.34 665 6.48WBMG 6/24/2010 1:00:00 23.46 7.28 609 6.32WBMG 6/24/2010 2:00:00 23.19 7.26 606 6.33WBMG 6/24/2010 3:00:00 22.94 7.24 599 6.33WBMG 6/24/2010 4:00:00 22.71 7.21 586 6.28WBMG 6/24/2010 5:00:00 22.52 7.19 570 6.26WBMG 6/24/2010 6:00:00 22.34 7.17 566 6.24WBMG 6/24/2010 7:00:00 22.2 7.16 572 6.33WBMG 6/24/2010 8:00:00 22.14 7.17 587 6.37WBMG 6/24/2010 9:00:00 22.22 7.18 610 6.41WBMG 6/24/2010 10:00:00 22.46 7.21 628 6.54WBMG 6/24/2010 11:00:00 22.82 7.24 648 6.71WBMG 6/24/2010 12:00:00 23.33 7.28 666 6.88WBMG 6/24/2010 13:00:00 23.96 7.34 682 7.07WBMG 6/24/2010 14:00:00 24.54 7.38 696 7.21WBMG 6/24/2010 15:00:00 25.14 7.43 711 7.33WBMG 6/24/2010 16:00:00 25.61 7.47 719 7.45WBMG 6/24/2010 17:00:00 25.97 7.5 728 7.43WBMG 6/24/2010 18:00:00 25.93 7.5 735 7.39WBMG 6/24/2010 19:00:00 25.92 7.5 741 7.23

West Branch DuPage River McDowell Grove Forest Preserve Page 23 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/24/2010 20:00:00 25.73 7.49 746 7.13WBMG 6/24/2010 21:00:00 25.53 7.48 752 7.03WBMG 6/24/2010 22:00:00 25.29 7.46 757 6.89WBMG 6/24/2010 23:00:00 24.96 7.43 763 6.84WBMG 6/25/2010 0:00:00 24.64 7.43 769 6.81WBMG 6/25/2010 1:00:00 24.29 7.4 774 6.84WBMG 6/25/2010 2:00:00 24.03 7.37 774 6.5WBMG 6/25/2010 3:00:00 23.61 7.35 778 6.59WBMG 6/25/2010 4:00:00 23.27 7.32 781 6.53WBMG 6/25/2010 5:00:00 22.93 7.29 783 6.54WBMG 6/25/2010 6:00:00 22.61 7.28 788 6.6WBMG 6/25/2010 7:00:00 22.48 7.27 790 6.57WBMG 6/25/2010 8:00:00 22.41 7.27 795 6.76WBMG 6/25/2010 9:00:00 22.62 7.29 794 6.91WBMG 6/25/2010 10:00:00 22.89 7.32 800 7.23WBMG 6/25/2010 11:00:00 23.25 7.35 806 7.42WBMG 6/25/2010 12:00:00 23.7 7.39 810 7.59WBMG 6/25/2010 13:00:00 24.5 7.45 813 7.9WBMG 6/25/2010 14:00:00 24.75 7.47 819 8.01WBMG 6/25/2010 15:00:00 25.44 7.52 823 8.19WBMG 6/25/2010 16:00:00 25.74 7.73 829 8.07WBMG 6/25/2010 17:00:00 25.97 7.65 836 8.08WBMG 6/25/2010 18:00:00 26.11 7.66 841 8WBMG 6/25/2010 19:00:00 25.92 7.63 845 7.59WBMG 6/25/2010 20:00:00 25.73 7.6 846 7.26WBMG 6/25/2010 21:00:00 25.73 7.59 841 6.94WBMG 6/25/2010 22:00:00 25.64 7.58 856 7.04WBMG 6/25/2010 23:00:00 25.43 7.56 858 6.92WBMG 6/26/2010 0:00:00 25.16 7.53 857 6.7WBMG 6/26/2010 1:00:00 24.9 7.51 855 6.61WBMG 6/26/2010 2:00:00 24.62 7.48 859 6.49WBMG 6/26/2010 3:00:00 24.37 7.46 867 6.47WBMG 6/26/2010 4:00:00 24.17 7.44 872 6.46WBMG 6/26/2010 5:00:00 23.8 7.45 845 6.64WBMG 6/26/2010 6:00:00 23.37 7.38 834 6.57WBMG 6/26/2010 7:00:00 23.16 7.35 834 6.47WBMG 6/26/2010 8:00:00 23.11 7.36 845 6.68WBMG 6/26/2010 9:00:00 23.14 7.36 828 6.76WBMG 6/26/2010 10:00:00 23.37 7.36 808 6.72WBMG 6/26/2010 11:00:00 23.52 7.35 792 6.87WBMG 6/26/2010 12:00:00 23.76 7.34 772 6.92WBMG 6/26/2010 13:00:00 24.27 7.35 747 6.84WBMG 6/26/2010 14:00:00 24.8 7.35 730 6.74WBMG 6/26/2010 15:00:00 25.45 7.38 728 6.72

West Branch DuPage River McDowell Grove Forest Preserve Page 24 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/26/2010 16:00:00 25.88 7.39 719 6.67WBMG 6/26/2010 17:00:00 26.16 7.38 705 6.46WBMG 6/26/2010 18:00:00 26.23 7.37 696 6.35WBMG 6/26/2010 19:00:00 26.12 7.38 705 6.44WBMG 6/26/2010 20:00:00 26.1 7.41 720 6.52WBMG 6/26/2010 21:00:00 26.12 7.42 734 6.44WBMG 6/26/2010 22:00:00 25.89 7.41 744 6.43WBMG 6/26/2010 23:00:00 25.67 7.39 746 6.39WBMG 6/27/2010 0:00:00 25.5 7.37 739 6.28WBMG 6/27/2010 1:00:00 25.22 7.34 731 6.23WBMG 6/27/2010 2:00:00 25 7.32 726 6.18WBMG 6/27/2010 3:00:00 24.87 7.31 731 6.09WBMG 6/27/2010 4:00:00 24.62 7.3 746 6.23WBMG 6/27/2010 5:00:00 24.51 7.3 758 6.13WBMG 6/27/2010 6:00:00 24.42 7.29 763 6.1WBMG 6/27/2010 7:00:00 24.31 7.28 768 6.2WBMG 6/27/2010 8:00:00 24.33 7.3 772 6.36WBMG 6/27/2010 9:00:00 24.32 7.31 770 6.37WBMG 6/27/2010 10:00:00 24.28 7.31 767 6.44WBMG 6/27/2010 11:00:00 24.38 7.3 763 6.38WBMG 6/27/2010 12:00:00 24.42 7.32 773 6.56WBMG 6/27/2010 13:00:00 24.95 7.36 756 6.73WBMG 6/27/2010 14:00:00 25.44 7.38 742 6.77WBMG 6/27/2010 15:00:00 25.6 7.35 715 6.6WBMG 6/27/2010 16:00:00 25.72 7.33 692 6.52WBMG 6/27/2010 17:00:00 25.99 7.34 682 6.51WBMG 6/27/2010 18:00:00 26.08 7.34 679 6.51WBMG 6/27/2010 19:00:00 25.99 7.32 655 6.4WBMG 6/27/2010 20:00:00 25.88 7.28 625 6.17WBMG 6/27/2010 21:00:00 25.75 7.26 609 6.03WBMG 6/27/2010 22:00:00 25.49 7.25 608 6.14WBMG 6/27/2010 23:00:00 25.37 7.26 632 6.09WBMG 6/28/2010 0:00:00 25.13 7.27 652 6.26WBMG 6/28/2010 1:00:00 24.94 7.26 670 6.26WBMG 6/28/2010 2:00:00 24.77 7.26 685 6.24WBMG 6/28/2010 3:00:00 24.54 7.26 696 6.24WBMG 6/28/2010 4:00:00 24.34 7.25 703 6.26WBMG 6/28/2010 5:00:00 24.14 7.24 710 6.18WBMG 6/28/2010 6:00:00 23.94 7.24 711 6.29WBMG 6/28/2010 7:00:00 23.85 7.23 712 6.19WBMG 6/28/2010 8:00:00 23.76 7.23 715 6.42WBMG 6/28/2010 9:00:00 23.88 7.25 716 6.48WBMG 6/28/2010 10:00:00 24.08 7.28 719 6.66WBMG 6/28/2010 11:00:00 24.38 7.3 723 6.94

West Branch DuPage River McDowell Grove Forest Preserve Page 25 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/28/2010 12:00:00 24.91 7.35 730 7.12WBMG 6/28/2010 13:00:00 25.39 7.38 735 7.29WBMG 6/28/2010 14:00:00 25.81 7.41 740 7.32WBMG 6/28/2010 15:00:00 25.95 7.42 747 7.3WBMG 6/28/2010 16:00:00 26.36 7.46 750 7.37WBMG 6/28/2010 17:00:00 26.33 7.45 753 7.24WBMG 6/28/2010 18:00:00 26.12 7.44 755 7.02WBMG 6/28/2010 19:00:00 25.9 7.42 756 6.92WBMG 6/28/2010 20:00:00 25.72 7.41 757 6.8WBMG 6/28/2010 21:00:00 25.55 7.39 760 6.72WBMG 6/28/2010 22:00:00 25.4 7.37 762 6.51WBMG 6/28/2010 23:00:00 25.15 7.37 765 6.52WBMG 6/29/2010 0:00:00 24.84 7.35 767 6.54WBMG 6/29/2010 1:00:00 24.43 7.33 770 6.42WBMG 6/29/2010 2:00:00 24.03 7.31 775 6.56WBMG 6/29/2010 3:00:00 23.66 7.29 778 6.54WBMG 6/29/2010 4:00:00 23.28 7.27 782 6.58WBMG 6/29/2010 5:00:00 22.92 7.25 783 6.43WBMG 6/29/2010 6:00:00 22.61 7.22 785 6.49WBMG 6/29/2010 7:00:00 22.37 7.21 788 6.59WBMG 6/29/2010 8:00:00 22.29 7.2 789 6.66WBMG 6/29/2010 9:00:00 22.38 7.22 790 6.9WBMG 6/29/2010 10:00:00 22.59 7.26 792 7.22WBMG 6/29/2010 11:00:00 23.01 7.3 794 7.58WBMG 6/29/2010 12:00:00 23.19 7.32 797 7.72WBMG 6/29/2010 13:00:00 23.73 7.36 799 8WBMG 6/29/2010 14:00:00 24.04 7.4 801 8.13WBMG 6/29/2010 15:00:00 24.01 7.41 804 7.97WBMG 6/29/2010 16:00:00 24.63 7.44 807 8.12WBMG 6/29/2010 17:00:00 24.51 7.43 809 7.9WBMG 6/29/2010 18:00:00 24.68 7.45 811 7.84WBMG 6/29/2010 19:00:00 24.42 7.42 816 7.61WBMG 6/29/2010 20:00:00 24.15 7.4 820 7.24WBMG 6/29/2010 21:00:00 23.99 7.38 822 7.06WBMG 6/29/2010 22:00:00 23.8 7.36 823 6.88WBMG 6/29/2010 23:00:00 23.51 7.33 825 6.78WBMG 6/30/2010 0:00:00 23.19 7.31 831 6.81WBMG 6/30/2010 1:00:00 22.8 7.28 827 6.66WBMG 6/30/2010 2:00:00 22.46 7.26 834 6.61WBMG 6/30/2010 3:00:00 22.1 7.23 836 6.69WBMG 6/30/2010 4:00:00 21.72 7.2 836 6.66WBMG 6/30/2010 5:00:00 21.35 7.18 839 6.64WBMG 6/30/2010 6:00:00 20.98 7.15 847 6.77WBMG 6/30/2010 7:00:00 20.69 7.14 848 6.68

West Branch DuPage River McDowell Grove Forest Preserve Page 26 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 6/30/2010 8:00:00 20.56 7.14 854 7.02WBMG 6/30/2010 9:00:00 20.61 7.15 856 7.3WBMG 6/30/2010 10:00:00 20.89 7.19 857 7.79WBMG 6/30/2010 11:00:00 21.38 7.23 861 8.16WBMG 6/30/2010 12:00:00 21.87 7.28 864 8.5WBMG 6/30/2010 13:00:00 22.66 7.35 864 8.86WBMG 6/30/2010 14:00:00 23.34 7.41 866 9.1WBMG 6/30/2010 15:00:00 23.93 7.45 866 9.22WBMG 6/30/2010 16:00:00 24.34 7.48 868 9.05WBMG 6/30/2010 17:00:00 24.45 7.49 873 8.95WBMG 6/30/2010 18:00:00 24.35 7.48 877 8.51WBMG 6/30/2010 19:00:00 24.06 7.44 885 7.89WBMG 6/30/2010 20:00:00 23.85 7.4 890 7.38WBMG 6/30/2010 21:00:00 23.85 7.39 892 7.1WBMG 6/30/2010 22:00:00 23.77 7.38 897 6.94WBMG 6/30/2010 23:00:00 23.59 7.37 897 6.78WBMG 7/1/2010 0:00:00 23.35 7.35 900 6.69WBMG 7/1/2010 1:00:00 23.04 7.33 903 6.69WBMG 7/1/2010 2:00:00 22.69 7.3 906 6.64WBMG 7/1/2010 3:00:00 22.26 7.27 906 6.58WBMG 7/1/2010 4:00:00 21.84 7.24 908 6.67WBMG 7/1/2010 5:00:00 21.42 7.21 909 6.63WBMG 7/1/2010 6:00:00 21.02 7.18 909 6.57WBMG 7/1/2010 7:00:00 20.7 7.17 911 6.66WBMG 7/1/2010 8:00:00 20.57 7.17 913 6.93WBMG 7/1/2010 9:00:00 20.64 7.18 920 7.31WBMG 7/1/2010 10:00:00 20.92 7.23 922 7.86WBMG 7/1/2010 11:00:00 21.4 7.28 924 8.33WBMG 7/1/2010 12:00:00 22.06 7.34 922 8.86WBMG 7/1/2010 13:00:00 22.81 7.4 921 9.17WBMG 7/1/2010 14:00:00 23.43 7.45 923 9.4WBMG 7/1/2010 15:00:00 23.96 7.5 923 9.61WBMG 7/1/2010 16:00:00 24.31 7.52 923 9.61WBMG 7/1/2010 17:00:00 24.41 7.53 924 9.32WBMG 7/1/2010 18:00:00 24.17 7.51 925 8.97WBMG 7/1/2010 19:00:00 23.84 7.48 927 8.3WBMG 7/1/2010 20:00:00 23.58 7.45 931 7.61WBMG 7/1/2010 21:00:00 23.5 7.43 935 7.19WBMG 7/1/2010 22:00:00 23.51 7.42 939 6.97WBMG 7/1/2010 23:00:00 23.45 7.41 942 6.74WBMG 7/2/2010 0:00:00 23.3 7.4 945 6.66WBMG 7/2/2010 1:00:00 23.08 7.37 945 6.58WBMG 7/2/2010 2:00:00 22.85 7.35 948 6.53WBMG 7/2/2010 3:00:00 22.54 7.33 949 6.47

West Branch DuPage River McDowell Grove Forest Preserve Page 27 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/2/2010 4:00:00 22.24 7.3 950 6.47WBMG 7/2/2010 5:00:00 21.9 7.27 950 6.47WBMG 7/2/2010 6:00:00 21.58 7.25 952 6.42WBMG 7/2/2010 7:00:00 21.34 7.25 952 6.58WBMG 7/2/2010 8:00:00 21.27 7.25 955 6.77WBMG 7/2/2010 9:00:00 21.35 7.26 957 7.12WBMG 7/2/2010 10:00:00 21.68 7.31 957 7.72WBMG 7/2/2010 11:00:00 22.17 7.36 956 8.4WBMG 7/2/2010 12:00:00 22.81 7.43 955 8.9WBMG 7/2/2010 13:00:00 23.53 7.49 957 9.4WBMG 7/2/2010 14:00:00 24.23 7.55 958 9.73WBMG 7/2/2010 15:00:00 24.75 7.92 973 10.09WBMG 7/2/2010 16:00:00 25.01 7.86 975 10.09WBMG 7/2/2010 17:00:00 25.12 7.86 973 9.92WBMG 7/2/2010 18:00:00 24.89 7.82 973 9.38WBMG 7/2/2010 19:00:00 24.45 7.75 976 8.56WBMG 7/2/2010 20:00:00 24.12 7.68 977 7.69WBMG 7/2/2010 21:00:00 24.03 7.64 983 7.16WBMG 7/2/2010 22:00:00 24.07 7.62 986 6.82WBMG 7/2/2010 23:00:00 24.09 7.61 987 6.64WBMG 7/3/2010 0:00:00 24.06 7.6 991 6.52WBMG 7/3/2010 1:00:00 23.92 7.58 990 6.35WBMG 7/3/2010 2:00:00 23.72 7.56 992 6.32WBMG 7/3/2010 3:00:00 23.48 7.53 995 6.25WBMG 7/3/2010 4:00:00 23.16 7.5 996 6.19WBMG 7/3/2010 5:00:00 22.85 7.48 1000 6.21WBMG 7/3/2010 6:00:00 22.48 7.45 998 6.17WBMG 7/3/2010 7:00:00 22.2 7.43 1001 6.25WBMG 7/3/2010 8:00:00 22.12 7.43 1007 6.51WBMG 7/3/2010 9:00:00 22.21 7.46 1005 7WBMG 7/3/2010 10:00:00 22.56 7.51 1004 7.67WBMG 7/3/2010 11:00:00 23.15 7.6 1003 8.52WBMG 7/3/2010 12:00:00 23.83 7.68 1008 9.29WBMG 7/3/2010 13:00:00 24.64 7.77 1008 9.84WBMG 7/3/2010 14:00:00 25.52 7.84 1008 10.33WBMG 7/3/2010 15:00:00 26.07 7.88 1012 10.55WBMG 7/3/2010 16:00:00 26.43 7.91 1013 10.57WBMG 7/3/2010 17:00:00 26.39 7.9 1013 10.32WBMG 7/3/2010 18:00:00 26.07 7.87 1010 9.81WBMG 7/3/2010 19:00:00 25.54 7.8 1006 8.89WBMG 7/3/2010 20:00:00 24.99 7.7 1010 7.81WBMG 7/3/2010 21:00:00 24.78 7.65 1010 7.04WBMG 7/3/2010 22:00:00 24.74 7.63 1010 6.58WBMG 7/3/2010 23:00:00 24.78 7.63 1015 6.35

West Branch DuPage River McDowell Grove Forest Preserve Page 28 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/4/2010 0:00:00 24.79 7.62 1019 6.26WBMG 7/4/2010 1:00:00 24.74 7.61 1018 5.97WBMG 7/4/2010 2:00:00 24.64 7.59 1017 6WBMG 7/4/2010 3:00:00 24.47 7.57 1016 5.91WBMG 7/4/2010 4:00:00 24.3 7.56 925 5.91WBMG 7/4/2010 5:00:00 24.07 7.54 1025 5.85WBMG 7/4/2010 6:00:00 23.83 7.51 1027 5.8WBMG 7/4/2010 7:00:00 23.63 7.49 1028 5.83WBMG 7/4/2010 8:00:00 23.59 7.5 1035 6.18WBMG 7/4/2010 9:00:00 23.76 7.53 1034 6.72WBMG 7/4/2010 10:00:00 24.19 7.6 1033 7.53WBMG 7/4/2010 11:00:00 24.86 7.69 1031 8.53WBMG 7/4/2010 12:00:00 25.6 7.78 1031 9.37WBMG 7/4/2010 13:00:00 26.35 7.86 1029 10WBMG 7/4/2010 14:00:00 27.01 7.91 1028 10.38WBMG 7/4/2010 15:00:00 27.47 7.95 1030 10.58WBMG 7/4/2010 16:00:00 27.73 7.96 1026 10.51WBMG 7/4/2010 17:00:00 27.46 7.93 1028 9.92WBMG 7/4/2010 18:00:00 26.92 7.85 1032 8.91WBMG 7/4/2010 19:00:00 26.65 7.8 1028 8.39WBMG 7/4/2010 20:00:00 26.49 7.77 1028 7.85WBMG 7/4/2010 21:00:00 26.31 7.73 1027 7.14WBMG 7/4/2010 22:00:00 26.15 7.69 1031 6.46WBMG 7/4/2010 23:00:00 26.1 7.67 1034 6.09WBMG 7/5/2010 0:00:00 26.1 7.66 1034 5.86WBMG 7/5/2010 1:00:00 26.1 7.67 1039 5.77WBMG 7/5/2010 2:00:00 26.06 7.66 1040 5.71WBMG 7/5/2010 3:00:00 25.97 7.64 1037 5.54WBMG 7/5/2010 4:00:00 25.89 7.63 1041 5.52WBMG 7/5/2010 5:00:00 25.77 7.61 1041 5.47WBMG 7/5/2010 6:00:00 25.62 7.6 1044 5.41WBMG 7/5/2010 7:00:00 25.47 7.58 1048 5.48WBMG 7/5/2010 8:00:00 25.33 7.58 1051 5.69WBMG 7/5/2010 9:00:00 25.43 7.61 1052 6.35WBMG 7/5/2010 10:00:00 25.63 7.66 1050 7.38WBMG 7/5/2010 11:00:00 26.12 7.76 1052 8.43WBMG 7/5/2010 12:00:00 26.77 7.88 1050 9.6WBMG 7/5/2010 13:00:00 27.51 7.96 1049 10.47WBMG 7/5/2010 14:00:00 28.17 8.03 1049 11.04WBMG 7/5/2010 15:00:00 28.77 8.08 1047 11.37WBMG 7/5/2010 16:00:00 29.13 8.1 1048 11.35WBMG 7/5/2010 17:00:00 29.2 8.09 1045 11.15WBMG 7/5/2010 18:00:00 28.77 8.05 1051 10.33WBMG 7/5/2010 19:00:00 28.17 7.97 1047 9.27

West Branch DuPage River McDowell Grove Forest Preserve Page 29 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/5/2010 20:00:00 27.47 7.86 1049 7.89WBMG 7/5/2010 21:00:00 27.01 7.78 1053 6.91WBMG 7/5/2010 22:00:00 26.78 7.72 1054 6.2WBMG 7/5/2010 23:00:00 26.64 7.69 1046 5.73WBMG 7/6/2010 0:00:00 26.59 7.69 1046 5.59WBMG 7/6/2010 1:00:00 26.49 7.69 1048 5.52WBMG 7/6/2010 2:00:00 26.37 7.68 1047 5.44WBMG 7/6/2010 3:00:00 26.22 7.67 1051 5.38WBMG 7/6/2010 4:00:00 26.05 7.65 1051 5.34WBMG 7/6/2010 5:00:00 25.86 7.62 1054 5.26WBMG 7/6/2010 6:00:00 25.63 7.6 1057 5.22WBMG 7/6/2010 7:00:00 25.44 7.58 1061 5.21WBMG 7/6/2010 8:00:00 25.32 7.57 1064 5.41WBMG 7/6/2010 9:00:00 25.44 7.6 1071 6.1WBMG 7/6/2010 10:00:00 25.75 7.67 1072 7.13WBMG 7/6/2010 11:00:00 26.15 7.78 1071 8.36WBMG 7/6/2010 12:00:00 26.69 7.84 1073 9.24WBMG 7/6/2010 13:00:00 27.35 7.92 1078 10.14WBMG 7/6/2010 14:00:00 28.11 8.01 1077 10.77WBMG 7/6/2010 15:00:00 28.54 8.03 1077 11.18WBMG 7/6/2010 16:00:00 28.59 8.02 1074 10.61WBMG 7/6/2010 17:00:00 28.64 8 1077 10.3WBMG 7/6/2010 18:00:00 28.41 7.99 1078 10.1WBMG 7/6/2010 19:00:00 28.06 7.93 1071 9.23WBMG 7/6/2010 20:00:00 27.42 7.83 1070 7.63WBMG 7/6/2010 21:00:00 26.87 7.73 1068 6.5WBMG 7/6/2010 22:00:00 26.55 7.68 1066 5.96WBMG 7/6/2010 23:00:00 26.39 7.65 1066 5.55WBMG 7/7/2010 0:00:00 26.29 7.64 1067 5.35WBMG 7/7/2010 1:00:00 26.22 7.64 1068 5.31WBMG 7/7/2010 2:00:00 26.19 7.64 1069 5.37WBMG 7/7/2010 3:00:00 26.15 7.65 1063 5.48WBMG 7/7/2010 4:00:00 26.11 7.64 1060 5.44WBMG 7/7/2010 5:00:00 25.99 7.63 1059 5.42WBMG 7/7/2010 6:00:00 25.74 7.59 1055 5.36WBMG 7/7/2010 7:00:00 25.56 7.57 1053 5.46WBMG 7/7/2010 8:00:00 25.47 7.53 1048 5.42WBMG 7/7/2010 9:00:00 25.68 7.52 1052 5.74WBMG 7/7/2010 10:00:00 26.13 7.53 1039 6.23WBMG 7/7/2010 11:00:00 26.74 7.56 1032 7.14WBMG 7/7/2010 12:00:00 27.62 7.72 1022 8.53WBMG 7/7/2010 13:00:00 28.47 7.83 1017 9.67WBMG 7/7/2010 14:00:00 29.11 7.92 1016 10.43WBMG 7/7/2010 15:00:00 29.63 7.95 1019 10.59

West Branch DuPage River McDowell Grove Forest Preserve Page 30 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/7/2010 16:00:00 30 8.01 1023 10.85WBMG 7/7/2010 17:00:00 29.82 7.99 1029 10.39WBMG 7/7/2010 18:00:00 29.04 7.9 1035 9.21WBMG 7/7/2010 19:00:00 28.37 7.8 1036 7.9WBMG 7/7/2010 20:00:00 27.95 7.73 943 6.99WBMG 7/7/2010 21:00:00 27.75 7.67 1039 6.11WBMG 7/7/2010 22:00:00 27.65 7.63 1040 5.49WBMG 7/7/2010 23:00:00 27.63 7.61 1043 5.2WBMG 7/8/2010 0:00:00 27.66 7.6 1041 5.03WBMG 7/8/2010 1:00:00 27.64 7.6 1034 4.95WBMG 7/8/2010 2:00:00 27.52 7.6 1027 4.99WBMG 7/8/2010 3:00:00 27.37 7.59 1028 4.87WBMG 7/8/2010 4:00:00 27.15 7.57 1034 4.77WBMG 7/8/2010 5:00:00 26.92 7.55 1033 4.69WBMG 7/8/2010 6:00:00 26.62 7.52 1052 4.7WBMG 7/8/2010 7:00:00 26.44 7.52 1053 4.77WBMG 7/8/2010 8:00:00 26.28 7.52 1053 4.94WBMG 7/8/2010 9:00:00 26.16 7.52 1055 5.2WBMG 7/8/2010 10:00:00 26.2 7.72 1055 5.59WBMG 7/8/2010 11:00:00 26.62 7.73 1053 7.07WBMG 7/8/2010 12:00:00 27.35 7.83 1055 8.42WBMG 7/8/2010 13:00:00 28.04 7.93 1059 9.65WBMG 7/8/2010 14:00:00 28.5 7.99 1056 10.24WBMG 7/8/2010 15:00:00 29.07 8.02 1047 10.62WBMG 7/8/2010 16:00:00 29.48 8.13 1038 10.87WBMG 7/8/2010 17:00:00 29.39 8.1 1030 10.33WBMG 7/8/2010 18:00:00 29.07 8.03 1024 9.45WBMG 7/8/2010 19:00:00 28.55 7.94 1019 8.43WBMG 7/8/2010 20:00:00 28.16 7.85 1018 7.26WBMG 7/8/2010 21:00:00 27.95 7.79 1015 6.36WBMG 7/8/2010 22:00:00 27.89 7.76 1017 5.85WBMG 7/8/2010 23:00:00 27.91 7.75 1017 5.57WBMG 7/9/2010 0:00:00 27.9 7.74 1015 5.46WBMG 7/9/2010 1:00:00 27.85 7.74 1015 5.36WBMG 7/9/2010 2:00:00 27.74 7.72 1011 5.3WBMG 7/9/2010 3:00:00 27.56 7.71 1012 5.26WBMG 7/9/2010 4:00:00 27.29 7.68 1009 5.22WBMG 7/9/2010 5:00:00 27 7.66 1007 5.13WBMG 7/9/2010 6:00:00 26.68 7.63 1006 5.08WBMG 7/9/2010 7:00:00 26.38 7.54 1006 5.07WBMG 7/9/2010 8:00:00 26.18 7.54 1006 5.28WBMG 7/9/2010 9:00:00 26.14 7.56 1009 5.87WBMG 7/9/2010 10:00:00 26.41 7.63 1004 6.83WBMG 7/9/2010 11:00:00 26.91 7.74 1001 8.19

West Branch DuPage River McDowell Grove Forest Preserve Page 31 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/9/2010 12:00:00 27.54 7.85 1000 9.36WBMG 7/9/2010 13:00:00 28.38 7.97 998 10.63WBMG 7/9/2010 14:00:00 29.08 8.05 997 11.17WBMG 7/9/2010 15:00:00 29.5 8.08 992 11.52WBMG 7/9/2010 16:00:00 29.87 8.1 993 11.61WBMG 7/9/2010 17:00:00 29.91 8.1 995 11.36WBMG 7/9/2010 18:00:00 29.34 8.03 998 10.36WBMG 7/9/2010 19:00:00 28.68 7.91 996 8.93WBMG 7/9/2010 20:00:00 27.96 7.78 994 7.5WBMG 7/9/2010 21:00:00 27.49 7.69 995 6.49WBMG 7/9/2010 22:00:00 27.18 7.64 996 5.84WBMG 7/9/2010 23:00:00 26.96 7.61 995 5.41WBMG 7/10/2010 0:00:00 26.77 7.6 996 5.24WBMG 7/10/2010 1:00:00 26.62 7.59 998 5.16WBMG 7/10/2010 2:00:00 26.46 7.59 1002 5.12WBMG 7/10/2010 3:00:00 26.29 7.58 1005 5.05WBMG 7/10/2010 4:00:00 26.1 7.57 1009 5.03WBMG 7/10/2010 5:00:00 25.84 7.55 1012 4.99WBMG 7/10/2010 6:00:00 25.56 7.53 1017 4.99WBMG 7/10/2010 7:00:00 25.31 7.51 1018 4.97WBMG 7/10/2010 8:00:00 25.2 7.51 1024 5.3WBMG 7/10/2010 9:00:00 25.3 7.53 1027 5.85WBMG 7/10/2010 10:00:00 25.63 7.6 1030 6.89WBMG 7/10/2010 11:00:00 26.15 7.72 1033 8.28WBMG 7/10/2010 12:00:00 26.76 7.83 1038 9.47WBMG 7/10/2010 13:00:00 27.58 7.95 1038 10.74WBMG 7/10/2010 14:00:00 28.3 8.03 1038 11.43WBMG 7/10/2010 15:00:00 28.91 8.1 1039 11.99WBMG 7/10/2010 16:00:00 29.28 8.11 1039 11.75WBMG 7/10/2010 17:00:00 29.23 8.09 1039 11.39WBMG 7/10/2010 18:00:00 28.9 8.07 1035 10.84WBMG 7/10/2010 19:00:00 28.15 7.96 1025 9.18WBMG 7/10/2010 20:00:00 27.45 7.84 1021 7.97WBMG 7/10/2010 21:00:00 26.95 7.71 1026 6.73WBMG 7/10/2010 22:00:00 26.58 7.62 1029 5.87WBMG 7/10/2010 23:00:00 26.29 7.57 1046 5.42WBMG 7/11/2010 0:00:00 26.09 7.55 1052 5.18WBMG 7/11/2010 1:00:00 26.02 7.55 1038 4.88WBMG 7/11/2010 2:00:00 25.96 7.55 1036 4.94WBMG 7/11/2010 3:00:00 25.86 7.55 1034 4.9WBMG 7/11/2010 4:00:00 25.74 7.55 1036 4.93WBMG 7/11/2010 5:00:00 25.61 7.55 1039 4.91WBMG 7/11/2010 6:00:00 25.45 7.54 1040 4.94WBMG 7/11/2010 7:00:00 25.32 7.53 1042 4.96

West Branch DuPage River McDowell Grove Forest Preserve Page 32 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/11/2010 8:00:00 25.32 7.54 1044 5.24WBMG 7/11/2010 9:00:00 25.51 7.57 1049 5.92WBMG 7/11/2010 10:00:00 25.81 7.63 1048 7.13WBMG 7/11/2010 11:00:00 26.24 7.76 1051 8.54WBMG 7/11/2010 12:00:00 26.76 7.88 1052 9.85WBMG 7/11/2010 13:00:00 27.19 7.98 1054 10.92WBMG 7/11/2010 14:00:00 27.35 8.03 1055 11.45WBMG 7/11/2010 15:00:00 27.32 8.01 1057 11.33WBMG 7/11/2010 16:00:00 27.32 8.02 1059 11.29WBMG 7/11/2010 17:00:00 27.26 8.02 1060 11.25WBMG 7/11/2010 18:00:00 26.92 8.01 1058 10.51WBMG 7/11/2010 19:00:00 26.41 7.88 1054 8.89WBMG 7/11/2010 20:00:00 25.9 7.73 1054 7.45WBMG 7/11/2010 21:00:00 25.38 7.61 1051 6.28WBMG 7/11/2010 22:00:00 25 7.55 1042 5.76WBMG 7/11/2010 23:00:00 24.76 7.52 1051 5.49WBMG 7/12/2010 0:00:00 24.63 7.52 1047 5.44WBMG 7/12/2010 1:00:00 24.56 7.53 1027 5.44WBMG 7/12/2010 2:00:00 24.64 7.59 1024 5.74WBMG 7/12/2010 3:00:00 24.73 7.63 1002 5.92WBMG 7/12/2010 4:00:00 24.64 7.61 999 6.05WBMG 7/12/2010 5:00:00 24.2 7.52 975 5.97WBMG 7/12/2010 6:00:00 23.73 7.43 923 5.72WBMG 7/12/2010 7:00:00 23.26 7.36 870 5.8WBMG 7/12/2010 8:00:00 22.92 7.33 852 6.04WBMG 7/12/2010 9:00:00 22.95 7.33 829 6.35WBMG 7/12/2010 10:00:00 23.07 7.3 756 6.47WBMG 7/12/2010 11:00:00 23.46 7.28 693 6.62WBMG 7/12/2010 12:00:00 23.83 7.33 665 6.95WBMG 7/12/2010 13:00:00 24.58 7.4 638 7.27WBMG 7/12/2010 14:00:00 25.02 7.47 671 7.57WBMG 7/12/2010 15:00:00 25.67 7.52 690 7.62WBMG 7/12/2010 16:00:00 25.87 7.54 682 7.64WBMG 7/12/2010 17:00:00 26.15 7.54 672 7.43WBMG 7/12/2010 18:00:00 26.31 7.49 668 6.96WBMG 7/12/2010 19:00:00 26.19 7.48 667 6.86WBMG 7/12/2010 20:00:00 26.17 7.49 680 6.68WBMG 7/12/2010 21:00:00 26.11 7.48 699 6.46WBMG 7/12/2010 22:00:00 26 7.48 718 6.35WBMG 7/12/2010 23:00:00 25.85 7.47 733 6.39WBMG 7/13/2010 0:00:00 25.68 7.45 744 6.25WBMG 7/13/2010 1:00:00 25.53 7.44 751 6.22WBMG 7/13/2010 2:00:00 25.36 7.42 756 6.14WBMG 7/13/2010 3:00:00 25.2 7.4 759 6.03

West Branch DuPage River McDowell Grove Forest Preserve Page 33 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/13/2010 4:00:00 25.03 7.39 762 5.98WBMG 7/13/2010 5:00:00 24.86 7.37 764 6.03WBMG 7/13/2010 6:00:00 24.68 7.36 767 5.93WBMG 7/13/2010 7:00:00 24.53 7.34 768 5.93WBMG 7/13/2010 8:00:00 24.51 7.36 768 6.17WBMG 7/13/2010 9:00:00 24.63 7.38 771 6.58WBMG 7/13/2010 10:00:00 24.96 7.45 771 7.19WBMG 7/13/2010 11:00:00 25.35 7.52 756 7.86WBMG 7/13/2010 12:00:00 26.03 7.61 777 8.62WBMG 7/13/2010 13:00:00 26.65 7.71 779 9.15WBMG 7/13/2010 14:00:00 27.46 7.82 780 9.91WBMG 7/13/2010 15:00:00 27.85 7.87 781 9.93WBMG 7/13/2010 16:00:00 27.61 7.82 749 9.39WBMG 7/13/2010 17:00:00 27.21 7.7 791 8.26WBMG 7/13/2010 18:00:00 27.46 7.68 785 7.91WBMG 7/13/2010 19:00:00 27.58 7.7 800 7.67WBMG 7/13/2010 20:00:00 27.5 7.68 804 7.11WBMG 7/13/2010 21:00:00 27.49 7.67 807 6.73WBMG 7/13/2010 22:00:00 27.41 7.64 808 6.44WBMG 7/13/2010 23:00:00 27.21 7.61 814 6.23WBMG 7/14/2010 0:00:00 26.98 7.59 819 6.12WBMG 7/14/2010 1:00:00 26.66 7.55 822 6.02WBMG 7/14/2010 2:00:00 26.32 7.52 825 5.94WBMG 7/14/2010 3:00:00 26.02 7.49 827 5.93WBMG 7/14/2010 4:00:00 25.73 7.46 829 5.8WBMG 7/14/2010 5:00:00 25.4 7.44 831 5.78WBMG 7/14/2010 6:00:00 25.09 7.41 832 5.76WBMG 7/14/2010 7:00:00 24.86 7.4 834 5.83WBMG 7/14/2010 8:00:00 24.76 7.4 835 6.12WBMG 7/14/2010 9:00:00 24.86 7.44 838 6.61WBMG 7/14/2010 10:00:00 25.21 7.52 839 7.41WBMG 7/14/2010 11:00:00 25.76 7.62 839 8.36WBMG 7/14/2010 12:00:00 26.36 7.73 840 9.19WBMG 7/14/2010 13:00:00 27.01 7.78 843 9.5WBMG 7/14/2010 14:00:00 27.55 7.87 843 10.11WBMG 7/14/2010 15:00:00 27.98 7.93 844 10.4WBMG 7/14/2010 16:00:00 28.4 8 843 10.54WBMG 7/14/2010 17:00:00 28.47 8 845 10.36WBMG 7/14/2010 18:00:00 28.3 7.95 848 9.73WBMG 7/14/2010 19:00:00 28.02 7.84 853 8.53WBMG 7/14/2010 20:00:00 27.7 7.73 858 7.46WBMG 7/14/2010 21:00:00 27.6 7.67 863 6.68WBMG 7/14/2010 22:00:00 27.63 7.64 868 6.15WBMG 7/14/2010 23:00:00 27.72 7.63 872 5.86

West Branch DuPage River McDowell Grove Forest Preserve Page 34 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/15/2010 0:00:00 27.75 7.62 877 5.69WBMG 7/15/2010 1:00:00 27.77 7.61 882 5.61WBMG 7/15/2010 2:00:00 27.73 7.6 887 5.57WBMG 7/15/2010 3:00:00 27.58 7.58 891 5.49WBMG 7/15/2010 4:00:00 27.38 7.56 894 5.32WBMG 7/15/2010 5:00:00 27.2 7.54 896 5.27WBMG 7/15/2010 6:00:00 27.03 7.51 896 5.18WBMG 7/15/2010 7:00:00 26.87 7.5 899 5.19WBMG 7/15/2010 8:00:00 26.78 7.49 900 5.26WBMG 7/15/2010 9:00:00 26.8 7.51 903 5.78WBMG 7/15/2010 10:00:00 26.96 7.56 905 6.49WBMG 7/15/2010 11:00:00 27.32 7.67 906 7.65WBMG 7/15/2010 12:00:00 27.82 7.79 907 8.79WBMG 7/15/2010 13:00:00 28.26 7.87 910 9.41WBMG 7/15/2010 14:00:00 28.76 7.93 910 10.08WBMG 7/15/2010 15:00:00 29.37 8.17 913 10.57WBMG 7/15/2010 16:00:00 29.64 8.15 912 10.53WBMG 7/15/2010 17:00:00 29.83 8.14 911 10.33WBMG 7/15/2010 18:00:00 29.53 8.04 912 9.44WBMG 7/15/2010 19:00:00 28.9 7.94 913 8.41WBMG 7/15/2010 20:00:00 28.28 7.8 914 7.11WBMG 7/15/2010 21:00:00 27.87 7.71 915 6.15WBMG 7/15/2010 22:00:00 27.65 7.67 916 5.69WBMG 7/15/2010 23:00:00 27.48 7.66 919 5.4WBMG 7/16/2010 0:00:00 27.33 7.65 923 5.32WBMG 7/16/2010 1:00:00 27.14 7.65 929 5.31WBMG 7/16/2010 2:00:00 26.92 7.64 935 5.26WBMG 7/16/2010 3:00:00 26.66 7.63 940 5.23WBMG 7/16/2010 4:00:00 26.37 7.61 944 5.19WBMG 7/16/2010 5:00:00 26.08 7.59 946 5.19WBMG 7/16/2010 6:00:00 25.75 7.56 949 5.12WBMG 7/16/2010 7:00:00 25.45 7.54 952 5.17WBMG 7/16/2010 8:00:00 25.31 7.54 956 5.46WBMG 7/16/2010 9:00:00 25.35 7.56 959 6.05WBMG 7/16/2010 10:00:00 25.65 7.63 960 6.94WBMG 7/16/2010 11:00:00 26.23 7.75 960 8.24WBMG 7/16/2010 12:00:00 26.88 7.88 961 9.45WBMG 7/16/2010 13:00:00 27.63 8 963 10.63WBMG 7/16/2010 14:00:00 28.52 8.12 964 11.5WBMG 7/16/2010 15:00:00 29.21 8.19 963 11.97WBMG 7/16/2010 16:00:00 29.56 8.22 966 12.11WBMG 7/16/2010 17:00:00 29.54 8.2 970 11.69WBMG 7/16/2010 18:00:00 29.23 8.14 971 10.92WBMG 7/16/2010 19:00:00 28.53 8.03 969 9.58

West Branch DuPage River McDowell Grove Forest Preserve Page 35 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/16/2010 20:00:00 27.74 7.87 969 7.92WBMG 7/16/2010 21:00:00 27.2 7.73 970 6.73WBMG 7/16/2010 22:00:00 26.96 7.65 971 5.91WBMG 7/16/2010 23:00:00 26.84 7.62 972 5.4WBMG 7/17/2010 0:00:00 26.8 7.61 973 5.19WBMG 7/17/2010 1:00:00 26.79 7.61 974 5.06WBMG 7/17/2010 2:00:00 26.72 7.6 977 5WBMG 7/17/2010 3:00:00 26.61 7.59 981 4.95WBMG 7/17/2010 4:00:00 26.49 7.58 985 4.9WBMG 7/17/2010 5:00:00 26.33 7.56 989 4.91WBMG 7/17/2010 6:00:00 26.17 7.55 992 4.88WBMG 7/17/2010 7:00:00 25.99 7.53 994 4.85WBMG 7/17/2010 8:00:00 25.93 7.53 997 5.16WBMG 7/17/2010 9:00:00 26.01 7.55 1001 5.68WBMG 7/17/2010 10:00:00 26.28 7.61 1003 6.53WBMG 7/17/2010 11:00:00 26.87 7.72 1004 7.89WBMG 7/17/2010 12:00:00 27.65 7.87 1005 9.36WBMG 7/17/2010 13:00:00 28.4 8 1009 10.6WBMG 7/17/2010 14:00:00 29.21 8.11 1013 11.57WBMG 7/17/2010 15:00:00 29.97 8.21 1013 12.3WBMG 7/17/2010 16:00:00 30.68 8.26 1011 12.47WBMG 7/17/2010 17:00:00 30.85 8.26 1014 12.31WBMG 7/17/2010 18:00:00 30.67 8.18 1015 11.37WBMG 7/17/2010 19:00:00 30.09 8.05 1017 10.15WBMG 7/17/2010 20:00:00 29.12 7.91 1021 8.15WBMG 7/17/2010 21:00:00 28.35 7.77 1023 6.69WBMG 7/17/2010 22:00:00 27.81 7.66 1025 5.74WBMG 7/17/2010 23:00:00 27.48 7.6 1026 5.2WBMG 7/18/2010 0:00:00 27.29 7.58 1025 4.89WBMG 7/18/2010 1:00:00 27.14 7.57 1023 4.73WBMG 7/18/2010 2:00:00 27.02 7.57 1024 4.65WBMG 7/18/2010 3:00:00 26.89 7.57 1026 4.6WBMG 7/18/2010 4:00:00 26.81 7.56 1026 4.61WBMG 7/18/2010 5:00:00 26.78 7.56 1027 4.61WBMG 7/18/2010 6:00:00 26.71 7.56 1028 4.56WBMG 7/18/2010 7:00:00 26.68 7.55 1030 4.58WBMG 7/18/2010 8:00:00 26.63 7.55 1033 4.76WBMG 7/18/2010 9:00:00 26.67 7.58 1036 5.29WBMG 7/18/2010 10:00:00 26.99 7.64 1040 6.21WBMG 7/18/2010 11:00:00 27.54 7.79 1040 7.8WBMG 7/18/2010 12:00:00 28.05 7.94 1041 9.41WBMG 7/18/2010 13:00:00 28.66 8.01 1043 10.13WBMG 7/18/2010 14:00:00 29.24 8.1 1046 11.01WBMG 7/18/2010 15:00:00 29.86 8.21 1045 11.91

West Branch DuPage River McDowell Grove Forest Preserve Page 36 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/18/2010 16:00:00 30.02 8.23 1047 11.95WBMG 7/18/2010 17:00:00 30.03 8.22 1050 11.61WBMG 7/18/2010 18:00:00 29.85 8.16 1053 10.96WBMG 7/18/2010 19:00:00 29.46 8.09 1056 9.94WBMG 7/18/2010 20:00:00 28.87 7.95 1056 8.55WBMG 7/18/2010 21:00:00 28.23 7.8 1058 7.03WBMG 7/18/2010 22:00:00 27.71 7.69 1059 6WBMG 7/18/2010 23:00:00 27.32 7.6 1058 5.21WBMG 7/19/2010 0:00:00 27.07 7.56 1057 4.88WBMG 7/19/2010 1:00:00 26.86 7.54 1055 4.66WBMG 7/19/2010 2:00:00 26.67 7.53 1054 4.6WBMG 7/19/2010 3:00:00 26.51 7.51 1054 4.55WBMG 7/19/2010 4:00:00 26.37 7.52 1053 4.53WBMG 7/19/2010 5:00:00 26.24 7.51 1051 4.57WBMG 7/19/2010 6:00:00 26.11 7.51 1051 4.56WBMG 7/19/2010 7:00:00 26 7.51 1051 4.58WBMG 7/19/2010 8:00:00 26.01 7.53 1053 4.81WBMG 7/19/2010 9:00:00 26.22 7.56 1054 5.47WBMG 7/19/2010 10:00:00 26.53 7.62 1055 6.31WBMG 7/19/2010 11:00:00 26.99 7.72 1054 7.64WBMG 7/19/2010 12:00:00 27.48 7.87 1054 9.1WBMG 7/19/2010 13:00:00 27.83 7.97 1055 10.42WBMG 7/19/2010 14:00:00 27.94 8.05 1057 11.16WBMG 7/19/2010 15:00:00 27.9 8.07 1059 11.29WBMG 7/19/2010 16:00:00 27.7 8.05 1063 10.9WBMG 7/19/2010 17:00:00 27.4 7.96 1066 9.81WBMG 7/19/2010 18:00:00 27.15 7.87 1069 8.77WBMG 7/19/2010 19:00:00 26.87 7.81 1071 8.19WBMG 7/19/2010 20:00:00 26.55 7.73 1074 7.5WBMG 7/19/2010 21:00:00 26.23 7.66 1075 6.81WBMG 7/19/2010 22:00:00 25.92 7.59 1075 6.11WBMG 7/19/2010 23:00:00 25.64 7.53 1075 5.56WBMG 7/20/2010 0:00:00 25.41 7.5 1073 5.17WBMG 7/20/2010 1:00:00 25.22 7.47 1070 5WBMG 7/20/2010 2:00:00 25.03 7.46 1068 5WBMG 7/20/2010 3:00:00 24.86 7.46 1066 5WBMG 7/20/2010 4:00:00 24.78 7.46 1064 5.02WBMG 7/20/2010 5:00:00 24.75 7.47 1062 5WBMG 7/20/2010 6:00:00 24.65 7.47 1061 5.04WBMG 7/20/2010 7:00:00 24.58 7.47 1061 5.06WBMG 7/20/2010 8:00:00 24.53 7.47 1062 5.26WBMG 7/20/2010 9:00:00 24.51 7.5 1062 5.61WBMG 7/20/2010 10:00:00 24.47 7.5 1061 5.9WBMG 7/20/2010 11:00:00 24.41 7.51 1062 6.1

West Branch DuPage River McDowell Grove Forest Preserve Page 37 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/20/2010 12:00:00 24.56 7.54 1063 6.65WBMG 7/20/2010 13:00:00 24.87 7.65 1063 8.03WBMG 7/20/2010 14:00:00 25.45 7.77 1064 9.37WBMG 7/20/2010 15:00:00 26.26 7.94 1066 10.88WBMG 7/20/2010 16:00:00 27.18 8.08 1067 12.07WBMG 7/20/2010 17:00:00 27.61 8.14 1068 12.18WBMG 7/20/2010 18:00:00 27.68 8.12 1071 11.74WBMG 7/20/2010 19:00:00 27.51 8.04 1074 10.83WBMG 7/20/2010 20:00:00 26.87 7.92 1080 9.38WBMG 7/20/2010 21:00:00 26.19 7.79 1085 7.94WBMG 7/20/2010 22:00:00 25.62 7.66 1093 6.71WBMG 7/20/2010 23:00:00 25.18 7.55 1094 5.79WBMG 7/21/2010 0:00:00 24.93 7.51 1090 5.43WBMG 7/21/2010 1:00:00 24.77 7.48 1088 5.23WBMG 7/21/2010 2:00:00 24.65 7.46 1087 5.06WBMG 7/21/2010 3:00:00 24.55 7.46 1086 5.01WBMG 7/21/2010 4:00:00 24.5 7.45 1083 5.04WBMG 7/21/2010 5:00:00 24.43 7.46 1082 5.03WBMG 7/21/2010 6:00:00 24.39 7.45 1080 5.1WBMG 7/21/2010 7:00:00 24.39 7.46 1079 5.11WBMG 7/21/2010 8:00:00 24.52 7.49 1078 5.38WBMG 7/21/2010 9:00:00 24.81 7.53 1079 5.84WBMG 7/21/2010 10:00:00 25.29 7.61 1079 6.74WBMG 7/21/2010 11:00:00 25.86 7.71 1078 7.92WBMG 7/21/2010 12:00:00 26.65 7.87 1077 9.46WBMG 7/21/2010 13:00:00 27.4 8 1078 10.62WBMG 7/21/2010 14:00:00 28.08 8.08 1080 11.53WBMG 7/21/2010 15:00:00 28.84 8.2 1080 12.31WBMG 7/21/2010 16:00:00 29.53 8.26 1078 12.75WBMG 7/21/2010 17:00:00 29.73 8.28 1081 12.44WBMG 7/21/2010 18:00:00 29.64 8.24 1085 11.93WBMG 7/21/2010 19:00:00 29.42 8.18 1086 10.85WBMG 7/21/2010 20:00:00 28.67 8.04 1088 9.12WBMG 7/21/2010 21:00:00 27.89 7.87 1091 7.44WBMG 7/21/2010 22:00:00 27.23 7.74 1092 6.29WBMG 7/21/2010 23:00:00 26.7 7.63 1092 5.5WBMG 7/22/2010 0:00:00 26.35 7.58 1090 5.08WBMG 7/22/2010 1:00:00 26.1 7.55 1088 4.9WBMG 7/22/2010 2:00:00 25.88 7.53 1087 4.78WBMG 7/22/2010 3:00:00 25.7 7.52 1086 4.73WBMG 7/22/2010 4:00:00 25.57 7.51 1085 4.72WBMG 7/22/2010 5:00:00 25.52 7.51 1082 4.76WBMG 7/22/2010 6:00:00 25.5 7.52 1080 4.74WBMG 7/22/2010 7:00:00 25.52 7.52 1080 4.79

West Branch DuPage River McDowell Grove Forest Preserve Page 38 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/22/2010 8:00:00 25.59 7.54 1080 5.01WBMG 7/22/2010 9:00:00 25.77 7.57 1078 5.51WBMG 7/22/2010 10:00:00 25.78 7.92 1153 6.23WBMG 7/22/2010 11:00:00 25.95 7.96 1152 6.69WBMG 7/22/2010 12:00:00 26.13 8.02 1143 7.39WBMG 7/22/2010 13:00:00 26.47 8.08 1137 8.11WBMG 7/22/2010 14:00:00 26.97 8.18 1128 9.1WBMG 7/22/2010 15:00:00 27.57 8.28 1130 10.25WBMG 7/22/2010 16:00:00 28.11 8.36 1130 11.15WBMG 7/22/2010 17:00:00 28.36 8.37 1133 11.22WBMG 7/22/2010 18:00:00 28.33 8.32 1135 10.76WBMG 7/22/2010 19:00:00 28 8.24 1135 9.78WBMG 7/22/2010 20:00:00 27.32 8.05 1142 7.99WBMG 7/22/2010 21:00:00 26.68 7.89 1136 6.42WBMG 7/22/2010 22:00:00 26.43 7.82 1125 5.8WBMG 7/22/2010 23:00:00 26.39 7.82 1119 5.66WBMG 7/23/2010 0:00:00 26.33 7.81 1118 5.46WBMG 7/23/2010 1:00:00 26.29 7.81 1123 5.35WBMG 7/23/2010 2:00:00 26.27 7.82 1126 5.32WBMG 7/23/2010 3:00:00 26.27 7.82 1128 5.22WBMG 7/23/2010 4:00:00 26.2 7.79 1129 5.11WBMG 7/23/2010 5:00:00 26.12 7.76 1131 4.94WBMG 7/23/2010 6:00:00 25.96 7.74 1135 4.86WBMG 7/23/2010 7:00:00 25.77 7.72 1139 4.83WBMG 7/23/2010 8:00:00 25.63 7.73 1144 5.08WBMG 7/23/2010 9:00:00 25.65 7.77 1143 5.8WBMG 7/23/2010 10:00:00 25.82 7.83 1139 6.66WBMG 7/23/2010 11:00:00 26.1 7.91 1138 7.6WBMG 7/23/2010 12:00:00 26.86 8.03 1138 8.87WBMG 7/23/2010 13:00:00 27.57 8.15 1142 10.13WBMG 7/23/2010 14:00:00 28.43 8.26 1144 11.23WBMG 7/23/2010 15:00:00 29.2 8.34 1147 12.04WBMG 7/23/2010 16:00:00 29.81 8.36 1149 12.08WBMG 7/23/2010 17:00:00 30.07 8.35 1150 11.75WBMG 7/23/2010 18:00:00 30 8.31 1149 10.97WBMG 7/23/2010 19:00:00 29.35 8.18 1142 8.83WBMG 7/23/2010 20:00:00 28.66 8 1135 7.11WBMG 7/23/2010 21:00:00 28.13 7.86 1137 5.84WBMG 7/23/2010 22:00:00 27.76 7.79 1129 5.09WBMG 7/23/2010 23:00:00 27.62 7.77 1134 4.89WBMG 7/24/2010 0:00:00 27.6 7.78 1143 4.87WBMG 7/24/2010 1:00:00 27.7 7.79 1129 4.8WBMG 7/24/2010 2:00:00 27.19 7.87 1041 5.85WBMG 7/24/2010 3:00:00 26.27 7.81 875 6.07

West Branch DuPage River McDowell Grove Forest Preserve Page 39 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/24/2010 4:00:00 25.27 7.73 732 6.27WBMG 7/24/2010 5:00:00 24.84 7.71 726 6.37WBMG 7/24/2010 6:00:00 24.27 7.65 605 6.48WBMG 7/24/2010 7:00:00 23.53 7.57 443 6.49WBMG 7/24/2010 8:00:00 23.24 7.51 385 6.38WBMG 7/24/2010 9:00:00 22.99 7.46 364 6.22WBMG 7/24/2010 10:00:00 22.77 7.44 339 6.18WBMG 7/24/2010 11:00:00 22.76 7.43 326 5.97WBMG 7/24/2010 12:00:00 22.76 7.41 309 5.91WBMG 7/24/2010 13:00:00 23.08 7.41 312 5.81WBMG 7/24/2010 15:00:00 23.7 7.43 349 5.77WBMG 7/24/2010 16:00:00 23.82 7.41 338 5.71WBMG 7/24/2010 17:00:00 23.8 7.39 323 5.6WBMG 7/24/2010 18:00:00 23.93 7.37 333 5.49WBMG 7/24/2010 19:00:00 23.9 7.37 332 5.45WBMG 7/24/2010 20:00:00 23.95 7.37 343 5.32WBMG 7/24/2010 21:00:00 23.98 7.36 350 5.24WBMG 7/24/2010 22:00:00 24.06 7.35 360 5.16WBMG 7/24/2010 23:00:00 24.07 7.35 368 5.03WBMG 7/25/2010 0:00:00 24.04 7.34 367 4.94WBMG 7/25/2010 1:00:00 24 7.33 359 4.88WBMG 7/25/2010 2:00:00 23.96 7.33 353 4.8WBMG 7/25/2010 3:00:00 23.97 7.31 355 4.68WBMG 7/25/2010 4:00:00 23.93 7.3 354 4.57WBMG 7/25/2010 5:00:00 23.87 7.28 356 4.43WBMG 7/25/2010 6:00:00 23.84 7.27 357 4.33WBMG 7/25/2010 7:00:00 23.81 7.26 360 4.26WBMG 7/25/2010 8:00:00 23.8 7.25 359 4.24WBMG 7/25/2010 9:00:00 23.77 7.24 357 4.25WBMG 7/25/2010 10:00:00 23.83 7.24 358 4.27WBMG 7/25/2010 11:00:00 23.95 7.26 363 4.39WBMG 7/25/2010 12:00:00 24.06 7.26 358 4.47WBMG 7/25/2010 13:00:00 24.23 7.26 359 4.53WBMG 7/25/2010 14:00:00 24.41 7.27 365 4.58WBMG 7/25/2010 15:00:00 24.63 7.29 363 4.75WBMG 7/25/2010 16:00:00 24.81 7.3 368 4.85WBMG 7/25/2010 17:00:00 24.95 7.3 372 4.97WBMG 7/25/2010 18:00:00 25.07 7.31 378 5.06WBMG 7/25/2010 19:00:00 25.11 7.33 382 5.13WBMG 7/25/2010 20:00:00 25.08 7.33 387 5.16WBMG 7/25/2010 21:00:00 25.05 7.34 394 5.11WBMG 7/25/2010 22:00:00 24.97 7.33 399 5.1WBMG 7/25/2010 23:00:00 24.86 7.33 402 4.97WBMG 7/26/2010 0:00:00 24.76 7.33 406 4.91

West Branch DuPage River McDowell Grove Forest Preserve Page 40 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/26/2010 1:00:00 24.65 7.32 410 4.83WBMG 7/26/2010 2:00:00 24.56 7.32 416 4.81WBMG 7/26/2010 3:00:00 24.46 7.32 422 4.75WBMG 7/26/2010 4:00:00 24.34 7.33 427 4.75WBMG 7/26/2010 5:00:00 24.2 7.32 433 4.77WBMG 7/26/2010 6:00:00 24.07 7.33 438 4.76WBMG 7/26/2010 7:00:00 23.92 7.33 443 4.78WBMG 7/26/2010 8:00:00 23.81 7.34 447 4.85WBMG 7/26/2010 9:00:00 23.76 7.32 449 4.71WBMG 7/26/2010 10:00:00 23.84 7.32 457 4.63WBMG 7/26/2010 11:00:00 23.87 7.34 458 5.05WBMG 7/26/2010 12:00:00 24.02 7.35 463 5.13WBMG 7/26/2010 13:00:00 24.18 7.37 468 5.35WBMG 7/26/2010 14:00:00 24.41 7.39 471 5.62WBMG 7/26/2010 15:00:00 24.61 7.41 476 5.74WBMG 7/26/2010 16:00:00 24.76 7.42 481 5.88WBMG 7/26/2010 17:00:00 24.94 7.45 486 5.92WBMG 7/26/2010 18:00:00 24.99 7.46 488 6.06WBMG 7/26/2010 19:00:00 25.07 7.47 494 5.94WBMG 7/26/2010 20:00:00 25 7.47 495 6.01WBMG 7/26/2010 21:00:00 25.01 7.46 500 5.88WBMG 7/26/2010 22:00:00 24.96 7.45 503 5.78WBMG 7/26/2010 23:00:00 24.91 7.44 505 5.63WBMG 7/27/2010 0:00:00 24.9 7.42 511 5.37WBMG 7/27/2010 1:00:00 24.75 7.41 512 5.4WBMG 7/27/2010 2:00:00 24.66 7.4 515 5.32WBMG 7/27/2010 3:00:00 24.56 7.39 520 5.23WBMG 7/27/2010 4:00:00 24.44 7.38 521 5.22WBMG 7/27/2010 5:00:00 24.35 7.37 528 5.15WBMG 7/27/2010 6:00:00 24.25 7.36 533 5.13WBMG 7/27/2010 7:00:00 24.15 7.36 536 5.19WBMG 7/27/2010 8:00:00 24.08 7.35 534 5.3WBMG 7/27/2010 9:00:00 24.09 7.35 540 5.41WBMG 7/27/2010 10:00:00 24.21 7.37 543 5.63WBMG 7/27/2010 11:00:00 24.46 7.38 542 5.91WBMG 7/27/2010 12:00:00 24.65 7.38 545 6.05WBMG 7/27/2010 13:00:00 25.03 7.41 559 6.32WBMG 7/27/2010 14:00:00 25.37 7.45 556 6.61WBMG 7/27/2010 15:00:00 25.68 7.47 569 6.8WBMG 7/27/2010 16:00:00 25.82 7.48 570 6.9WBMG 7/27/2010 17:00:00 26.03 7.5 572 6.97WBMG 7/27/2010 18:00:00 26.12 7.5 578 6.9WBMG 7/27/2010 19:00:00 26.14 7.5 583 6.8WBMG 7/27/2010 20:00:00 26.15 7.48 584 6.66

West Branch DuPage River McDowell Grove Forest Preserve Page 41 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/27/2010 21:00:00 26.08 7.47 589 6.51WBMG 7/27/2010 22:00:00 26 7.45 595 6.35WBMG 7/27/2010 23:00:00 25.87 7.43 599 6.28WBMG 7/28/2010 0:00:00 25.77 7.43 603 6.22WBMG 7/28/2010 1:00:00 25.66 7.41 607 6.16WBMG 7/28/2010 2:00:00 25.58 7.4 610 6.12WBMG 7/28/2010 3:00:00 25.47 7.39 612 6.09WBMG 7/28/2010 4:00:00 25.36 7.38 615 6.07WBMG 7/28/2010 5:00:00 25.27 7.37 619 6.04WBMG 7/28/2010 6:00:00 25.21 7.39 621 6.02WBMG 7/28/2010 7:00:00 25.16 7.39 622 6.07WBMG 7/28/2010 8:00:00 25.14 7.39 623 6.16WBMG 7/28/2010 9:00:00 25.19 7.39 625 6.19WBMG 7/28/2010 10:00:00 25.41 7.41 625 6.37WBMG 7/28/2010 11:00:00 25.69 7.44 625 6.62WBMG 7/28/2010 12:00:00 25.96 7.45 627 6.85WBMG 7/28/2010 13:00:00 26.16 7.47 631 6.96WBMG 7/28/2010 14:00:00 26.43 7.48 635 7.07WBMG 7/28/2010 15:00:00 26.47 7.5 642 7.05WBMG 7/28/2010 16:00:00 26.56 7.49 649 6.97WBMG 7/28/2010 17:00:00 26.83 7.53 655 7.25WBMG 7/28/2010 18:00:00 26.81 7.54 660 7.17WBMG 7/28/2010 19:00:00 26.86 7.54 661 7.1WBMG 7/28/2010 20:00:00 26.77 7.52 664 6.93WBMG 7/28/2010 21:00:00 26.61 7.52 667 6.76WBMG 7/28/2010 22:00:00 26.46 7.5 671 6.63WBMG 7/28/2010 23:00:00 26.26 7.49 674 6.52WBMG 7/29/2010 0:00:00 26.01 7.48 678 6.52WBMG 7/29/2010 1:00:00 25.72 7.46 681 6.46WBMG 7/29/2010 2:00:00 25.45 7.45 686 6.44WBMG 7/29/2010 3:00:00 25.2 7.43 691 6.34WBMG 7/29/2010 4:00:00 24.92 7.43 695 6.35WBMG 7/29/2010 5:00:00 24.65 7.41 700 6.3WBMG 7/29/2010 6:00:00 24.41 7.41 706 6.31WBMG 7/29/2010 7:00:00 24.21 7.41 708 6.38WBMG 7/29/2010 8:00:00 24.15 7.41 709 6.47WBMG 7/29/2010 9:00:00 24.24 7.42 711 6.66WBMG 7/29/2010 10:00:00 24.3 7.43 713 6.92WBMG 7/29/2010 11:00:00 24.5 7.45 715 7.14WBMG 7/29/2010 12:00:00 25.06 7.49 717 7.55WBMG 7/29/2010 13:00:00 25.46 7.53 719 7.77WBMG 7/29/2010 14:00:00 25.9 7.57 724 8.08WBMG 7/29/2010 15:00:00 26.41 7.63 727 8.34WBMG 7/29/2010 16:00:00 26.71 7.78 732 8.34

West Branch DuPage River McDowell Grove Forest Preserve Page 42 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/29/2010 17:00:00 26.65 7.71 738 8.08WBMG 7/29/2010 18:00:00 26.62 7.7 741 7.88WBMG 7/29/2010 19:00:00 26.52 7.67 745 7.62WBMG 7/29/2010 20:00:00 26.4 7.65 748 7.32WBMG 7/29/2010 21:00:00 26.2 7.64 751 7.08WBMG 7/29/2010 22:00:00 25.96 7.62 751 6.89WBMG 7/29/2010 23:00:00 25.65 7.59 752 6.79WBMG 7/30/2010 0:00:00 25.36 7.57 755 6.69WBMG 7/30/2010 1:00:00 25.08 7.54 756 6.64WBMG 7/30/2010 2:00:00 24.81 7.52 757 6.59WBMG 7/30/2010 3:00:00 24.51 7.5 759 6.52WBMG 7/30/2010 4:00:00 24.24 7.48 761 6.5WBMG 7/30/2010 5:00:00 23.97 7.45 761 6.4WBMG 7/30/2010 6:00:00 23.71 7.44 763 6.28WBMG 7/30/2010 7:00:00 23.57 7.43 768 6.41WBMG 7/30/2010 8:00:00 23.46 7.42 767 6.43WBMG 7/30/2010 9:00:00 23.39 7.42 770 6.58WBMG 7/30/2010 10:00:00 23.41 7.43 773 6.82WBMG 7/30/2010 11:00:00 23.55 7.45 774 7.14WBMG 7/30/2010 12:00:00 23.9 7.49 777 7.62WBMG 7/30/2010 13:00:00 24.02 7.49 780 7.35WBMG 7/30/2010 14:00:00 24.18 7.49 780 7.29WBMG 7/30/2010 15:00:00 24.31 7.52 782 7.68WBMG 7/30/2010 16:00:00 24.28 7.52 786 7.59WBMG 7/30/2010 17:00:00 24.34 7.53 793 7.51WBMG 7/30/2010 18:00:00 24.35 7.52 800 7.35WBMG 7/30/2010 19:00:00 24.36 7.51 806 7.2WBMG 7/30/2010 20:00:00 24.36 7.5 811 7.07WBMG 7/30/2010 21:00:00 24.29 7.49 814 6.89WBMG 7/30/2010 22:00:00 24.19 7.47 814 6.74WBMG 7/30/2010 23:00:00 24.06 7.46 817 6.69WBMG 7/31/2010 0:00:00 23.9 7.45 818 6.56WBMG 7/31/2010 1:00:00 23.75 7.43 820 6.52WBMG 7/31/2010 2:00:00 23.57 7.42 821 6.45WBMG 7/31/2010 3:00:00 23.42 7.4 822 6.38WBMG 7/31/2010 4:00:00 23.26 7.39 825 6.36WBMG 7/31/2010 5:00:00 22.91 7.41 801 6.77WBMG 7/31/2010 6:00:00 22.57 7.38 775 6.64WBMG 7/31/2010 7:00:00 22.27 7.31 758 6.58WBMG 7/31/2010 8:00:00 22.31 7.33 770 6.66WBMG 7/31/2010 9:00:00 22.3 7.33 767 6.66WBMG 7/31/2010 10:00:00 22.4 7.33 778 6.91WBMG 7/31/2010 11:00:00 22.64 7.33 759 6.84WBMG 7/31/2010 12:00:00 22.61 7.31 782 6.88

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 7/31/2010 13:00:00 22.59 7.29 788 6.7WBMG 7/31/2010 14:00:00 22.6 7.28 799 6.67WBMG 7/31/2010 15:00:00 23.03 7.3 779 6.75WBMG 7/31/2010 16:00:00 23.15 7.31 798 6.97WBMG 7/31/2010 17:00:00 23.66 7.37 803 7.21WBMG 7/31/2010 18:00:00 23.63 7.37 814 7.21WBMG 7/31/2010 19:00:00 23.75 7.33 778 6.78WBMG 7/31/2010 20:00:00 23.67 7.3 762 6.59WBMG 7/31/2010 21:00:00 23.58 7.31 753 6.66WBMG 7/31/2010 22:00:00 23.43 7.31 754 6.68WBMG 7/31/2010 23:00:00 23.28 7.31 752 6.72WBMG 8/1/2010 0:00:00 23.15 7.3 754 6.69WBMG 8/1/2010 1:00:00 22.98 7.29 746 6.51WBMG 8/1/2010 2:00:00 22.82 7.26 741 6.49WBMG 8/1/2010 3:00:00 22.67 7.25 730 6.35WBMG 8/1/2010 4:00:00 22.49 7.23 733 6.45WBMG 8/1/2010 5:00:00 22.34 7.23 741 6.47WBMG 8/1/2010 6:00:00 22.17 7.23 752 6.5WBMG 8/1/2010 7:00:00 22.07 7.23 757 6.48WBMG 8/1/2010 8:00:00 22.03 7.24 764 6.67WBMG 8/1/2010 9:00:00 22.14 7.25 766 6.88WBMG 8/1/2010 10:00:00 22.47 7.28 761 7.13WBMG 8/1/2010 11:00:00 22.91 7.32 757 7.36WBMG 8/1/2010 12:00:00 23.53 7.37 756 7.72WBMG 8/1/2010 13:00:00 23.9 7.41 759 7.99WBMG 8/1/2010 14:00:00 24.45 7.45 758 8.14WBMG 8/1/2010 15:00:00 25.25 7.51 755 8.37WBMG 8/1/2010 16:00:00 25.48 7.52 758 8.2WBMG 8/1/2010 17:00:00 25.89 7.54 761 8.22WBMG 8/1/2010 18:00:00 25.96 7.53 765 7.9WBMG 8/1/2010 19:00:00 25.98 7.5 768 7.45WBMG 8/1/2010 20:00:00 25.98 7.49 770 7.12WBMG 8/1/2010 21:00:00 25.93 7.47 778 6.91WBMG 8/1/2010 22:00:00 25.91 7.46 780 6.75WBMG 8/1/2010 23:00:00 25.76 7.45 780 6.61WBMG 8/2/2010 0:00:00 25.47 7.43 784 6.58WBMG 8/2/2010 1:00:00 25.15 7.4 784 6.42WBMG 8/2/2010 2:00:00 24.91 7.38 786 6.46WBMG 8/2/2010 3:00:00 24.64 7.37 786 6.24WBMG 8/2/2010 4:00:00 24.4 7.34 786 6.34WBMG 8/2/2010 5:00:00 24.13 7.34 790 6.31WBMG 8/2/2010 6:00:00 23.87 7.33 792 6.25WBMG 8/2/2010 7:00:00 23.62 7.32 798 6.41WBMG 8/2/2010 8:00:00 23.53 7.33 799 6.56

West Branch DuPage River McDowell Grove Forest Preserve Page 44 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/2/2010 9:00:00 23.57 7.34 802 6.78WBMG 8/2/2010 10:00:00 23.67 7.37 802 7.24WBMG 8/2/2010 11:00:00 23.97 7.4 796 7.56WBMG 8/2/2010 12:00:00 24.35 7.43 802 7.99WBMG 8/2/2010 13:00:00 24.82 7.48 807 8.26WBMG 8/2/2010 14:00:00 25.15 7.52 814 8.32WBMG 8/2/2010 15:00:00 25.62 7.55 819 8.43WBMG 8/2/2010 16:00:00 25.85 7.57 825 8.3WBMG 8/2/2010 17:00:00 25.82 7.55 826 7.75WBMG 8/2/2010 18:00:00 25.87 7.52 833 7.28WBMG 8/2/2010 19:00:00 25.88 7.52 843 7.06WBMG 8/2/2010 20:00:00 25.86 7.51 838 6.79WBMG 8/2/2010 21:00:00 25.72 7.47 846 6.73WBMG 8/2/2010 22:00:00 25.53 7.43 848 6.52WBMG 8/2/2010 23:00:00 25.36 7.42 848 6.53WBMG 8/3/2010 0:00:00 25.14 7.41 847 6.39WBMG 8/3/2010 1:00:00 24.84 7.41 840 6.65WBMG 8/3/2010 2:00:00 24.62 7.38 848 6.45WBMG 8/3/2010 3:00:00 24.4 7.36 835 6.4WBMG 8/3/2010 4:00:00 24.04 7.35 823 6.65WBMG 8/3/2010 5:00:00 23.7 7.37 793 6.85WBMG 8/3/2010 6:00:00 23.09 7.32 705 6.98WBMG 8/3/2010 7:00:00 22.73 7.27 589 6.64WBMG 8/3/2010 8:00:00 22.63 7.24 613 6.9WBMG 8/3/2010 9:00:00 22.77 7.31 658 6.69WBMG 8/3/2010 10:00:00 22.66 7.32 642 6.79WBMG 8/3/2010 11:00:00 22.47 7.26 617 6.89WBMG 8/3/2010 12:00:00 22.79 7.25 585 6.86WBMG 8/3/2010 13:00:00 23.06 7.25 578 6.81WBMG 8/3/2010 14:00:00 23.21 7.23 551 6.78WBMG 8/3/2010 15:00:00 23.58 7.22 517 6.63WBMG 8/3/2010 16:00:00 23.74 7.21 499 6.62WBMG 8/3/2010 17:00:00 23.93 7.22 482 6.45WBMG 8/3/2010 18:00:00 23.99 7.2 474 6.41WBMG 8/3/2010 19:00:00 23.98 7.2 472 6.31WBMG 8/3/2010 20:00:00 23.97 7.2 472 6.24WBMG 8/3/2010 21:00:00 24.01 7.2 479 6.13WBMG 8/3/2010 22:00:00 23.96 7.19 487 6.03WBMG 8/3/2010 23:00:00 23.89 7.19 492 5.96WBMG 8/4/2010 0:00:00 23.9 7.19 500 5.86WBMG 8/4/2010 1:00:00 23.87 7.19 508 5.78WBMG 8/4/2010 2:00:00 23.81 7.19 513 5.77WBMG 8/4/2010 3:00:00 23.82 7.2 520 5.72WBMG 8/4/2010 4:00:00 23.77 7.2 527 5.71

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/4/2010 5:00:00 23.74 7.2 532 5.72WBMG 8/4/2010 6:00:00 23.71 7.2 541 5.7WBMG 8/4/2010 7:00:00 23.65 7.22 542 5.85WBMG 8/4/2010 8:00:00 23.56 7.22 552 5.9WBMG 8/4/2010 9:00:00 23.51 7.23 548 5.92WBMG 8/4/2010 10:00:00 23.5 7.23 542 5.98WBMG 8/4/2010 11:00:00 23.58 7.23 533 5.97WBMG 8/4/2010 12:00:00 23.66 7.23 532 5.99WBMG 8/4/2010 13:00:00 23.81 7.24 526 6.04WBMG 8/4/2010 14:00:00 23.75 7.23 524 6.09WBMG 8/4/2010 15:00:00 23.83 7.23 528 6.06WBMG 8/4/2010 16:00:00 23.81 7.23 531 6.03WBMG 8/4/2010 17:00:00 23.79 7.23 532 5.98WBMG 8/4/2010 18:00:00 23.74 7.22 527 5.95WBMG 8/4/2010 19:00:00 23.74 7.21 521 5.92WBMG 8/4/2010 20:00:00 23.8 7.21 519 5.88WBMG 8/4/2010 21:00:00 23.73 7.22 517 5.85WBMG 8/4/2010 22:00:00 23.73 7.22 520 5.79WBMG 8/4/2010 23:00:00 23.67 7.22 524 5.74WBMG 8/5/2010 0:00:00 23.59 7.22 529 5.71WBMG 8/5/2010 1:00:00 23.55 7.22 535 5.66WBMG 8/5/2010 2:00:00 23.5 7.22 543 5.63WBMG 8/5/2010 3:00:00 23.4 7.22 543 5.64WBMG 8/5/2010 4:00:00 23.34 7.22 547 5.6WBMG 8/5/2010 5:00:00 23.22 7.22 549 5.64WBMG 8/5/2010 6:00:00 23.14 7.21 552 5.64WBMG 8/5/2010 7:00:00 23.06 7.21 557 5.66WBMG 8/5/2010 8:00:00 22.97 7.22 560 5.74WBMG 8/5/2010 9:00:00 23 7.22 566 5.82WBMG 8/5/2010 10:00:00 23.13 7.24 570 5.94WBMG 8/5/2010 11:00:00 23.39 7.27 574 6.1WBMG 8/5/2010 12:00:00 23.78 7.29 580 6.29WBMG 8/5/2010 13:00:00 24.09 7.32 585 6.5WBMG 8/5/2010 14:00:00 24.55 7.36 589 6.68WBMG 8/5/2010 15:00:00 24.75 7.43 596 6.8WBMG 8/5/2010 16:00:00 24.97 7.42 600 6.88WBMG 8/5/2010 17:00:00 25.18 7.44 603 6.93WBMG 8/5/2010 18:00:00 25.2 7.44 605 6.89WBMG 8/5/2010 19:00:00 25.02 7.43 611 6.79WBMG 8/5/2010 20:00:00 24.9 7.42 612 6.69WBMG 8/5/2010 21:00:00 24.69 7.4 616 6.61WBMG 8/5/2010 22:00:00 24.53 7.39 618 6.5WBMG 8/5/2010 23:00:00 24.29 7.38 621 6.45WBMG 8/6/2010 0:00:00 24.04 7.36 625 6.41

West Branch DuPage River McDowell Grove Forest Preserve Page 46 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/6/2010 1:00:00 23.8 7.34 628 6.38WBMG 8/6/2010 2:00:00 23.59 7.34 631 6.4WBMG 8/6/2010 3:00:00 23.37 7.32 634 6.4WBMG 8/6/2010 4:00:00 23.17 7.32 638 6.41WBMG 8/6/2010 5:00:00 23 7.31 641 6.43WBMG 8/6/2010 6:00:00 22.81 7.3 644 6.44WBMG 8/6/2010 7:00:00 22.68 7.31 644 6.47WBMG 8/6/2010 8:00:00 22.55 7.31 650 6.58WBMG 8/6/2010 9:00:00 22.5 7.31 657 6.71WBMG 8/6/2010 10:00:00 22.64 7.33 659 6.87WBMG 8/6/2010 11:00:00 22.92 7.35 662 7.05WBMG 8/6/2010 12:00:00 23.25 7.38 668 7.24WBMG 8/6/2010 13:00:00 23.67 7.41 672 7.38WBMG 8/6/2010 14:00:00 24.14 7.45 675 7.53WBMG 8/6/2010 15:00:00 24.42 7.47 683 7.6WBMG 8/6/2010 16:00:00 24.7 7.49 684 7.58WBMG 8/6/2010 17:00:00 24.85 7.51 688 7.6WBMG 8/6/2010 18:00:00 24.86 7.51 692 7.54WBMG 8/6/2010 19:00:00 24.84 7.51 696 7.4WBMG 8/6/2010 20:00:00 24.77 7.5 700 7.27WBMG 8/6/2010 21:00:00 24.6 7.49 703 7.15WBMG 8/6/2010 22:00:00 24.41 7.48 705 7.07WBMG 8/6/2010 23:00:00 24.2 7.46 710 7WBMG 8/7/2010 0:00:00 23.98 7.46 711 6.89WBMG 8/7/2010 1:00:00 23.75 7.44 707 6.82WBMG 8/7/2010 2:00:00 23.44 7.42 714 6.81WBMG 8/7/2010 3:00:00 23.18 7.4 719 6.78WBMG 8/7/2010 4:00:00 23.03 7.39 708 6.63WBMG 8/7/2010 5:00:00 22.67 7.37 728 6.76WBMG 8/7/2010 6:00:00 22.48 7.36 731 6.74WBMG 8/7/2010 7:00:00 22.34 7.35 733 6.76WBMG 8/7/2010 8:00:00 22.32 7.36 733 6.83WBMG 8/7/2010 9:00:00 22.53 7.37 716 6.93WBMG 8/7/2010 10:00:00 22.51 7.38 736 7.15WBMG 8/7/2010 11:00:00 22.78 7.41 739 7.35WBMG 8/7/2010 12:00:00 23.07 7.43 738 7.5WBMG 8/7/2010 13:00:00 23.44 7.47 746 7.75WBMG 8/7/2010 14:00:00 23.94 7.51 738 7.85WBMG 8/7/2010 15:00:00 24.35 7.53 744 7.83WBMG 8/7/2010 16:00:00 24.78 7.57 747 7.98WBMG 8/7/2010 17:00:00 24.84 7.57 757 7.89WBMG 8/7/2010 18:00:00 24.97 7.57 761 7.78WBMG 8/7/2010 19:00:00 24.99 7.57 763 7.52WBMG 8/7/2010 20:00:00 24.98 7.56 764 7.34

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/7/2010 21:00:00 25.02 7.56 752 7.09WBMG 8/7/2010 22:00:00 24.81 7.53 771 7.06WBMG 8/7/2010 23:00:00 24.62 7.52 776 6.97WBMG 8/8/2010 0:00:00 24.4 7.5 781 6.89WBMG 8/8/2010 1:00:00 24.18 7.49 786 6.79WBMG 8/8/2010 2:00:00 23.94 7.48 786 6.77WBMG 8/8/2010 3:00:00 23.71 7.47 783 6.72WBMG 8/8/2010 4:00:00 23.43 7.45 795 6.69WBMG 8/8/2010 5:00:00 23.22 7.44 794 6.64WBMG 8/8/2010 6:00:00 23.01 7.43 791 6.59WBMG 8/8/2010 7:00:00 22.77 7.41 801 6.67WBMG 8/8/2010 8:00:00 22.74 7.42 784 6.64WBMG 8/8/2010 9:00:00 22.54 7.4 796 6.73WBMG 8/8/2010 10:00:00 22.44 7.4 799 6.78WBMG 8/8/2010 11:00:00 22.42 7.4 799 6.84WBMG 8/8/2010 12:00:00 22.39 7.4 799 6.82WBMG 8/8/2010 13:00:00 22.31 7.4 800 6.83WBMG 8/8/2010 14:00:00 22.77 7.45 800 7.21WBMG 8/8/2010 15:00:00 23.39 7.5 803 7.72WBMG 8/8/2010 16:00:00 23.86 7.54 810 7.9WBMG 8/8/2010 17:00:00 24.1 7.55 816 7.78WBMG 8/8/2010 18:00:00 24.16 7.54 817 7.51WBMG 8/8/2010 19:00:00 24.23 7.54 822 7.35WBMG 8/8/2010 20:00:00 24.39 7.54 821 7.14WBMG 8/8/2010 21:00:00 24.5 7.53 831 6.94WBMG 8/8/2010 22:00:00 24.62 7.53 833 6.84WBMG 8/8/2010 23:00:00 24.69 7.52 828 6.73WBMG 8/9/2010 0:00:00 24.61 7.51 841 6.68WBMG 8/9/2010 1:00:00 24.52 7.5 843 6.57WBMG 8/9/2010 2:00:00 24.37 7.48 844 6.51WBMG 8/9/2010 3:00:00 24.18 7.47 844 6.47WBMG 8/9/2010 4:00:00 24.04 7.46 842 6.4WBMG 8/9/2010 5:00:00 23.85 7.45 853 6.43WBMG 8/9/2010 6:00:00 23.7 7.44 851 6.4WBMG 8/9/2010 7:00:00 23.51 7.43 854 6.42WBMG 8/9/2010 8:00:00 23.54 7.44 829 6.43WBMG 8/9/2010 9:00:00 23.35 7.44 854 6.66WBMG 8/9/2010 10:00:00 23.39 7.44 839 6.66WBMG 8/9/2010 11:00:00 23.6 7.47 847 7.04WBMG 8/9/2010 12:00:00 23.88 7.51 842 7.37WBMG 8/9/2010 13:00:00 24.36 7.54 843 7.65WBMG 8/9/2010 14:00:00 25.07 7.6 840 8.06WBMG 8/9/2010 15:00:00 25.63 7.63 849 8.12WBMG 8/9/2010 16:00:00 25.82 7.63 850 7.97

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/9/2010 17:00:00 26.05 7.64 859 7.84WBMG 8/9/2010 18:00:00 26.11 7.62 865 7.54WBMG 8/9/2010 19:00:00 26.22 7.61 864 7.19WBMG 8/9/2010 20:00:00 26.39 7.6 868 6.99WBMG 8/9/2010 21:00:00 26.47 7.59 863 6.76WBMG 8/9/2010 22:00:00 26.41 7.58 861 6.65WBMG 8/9/2010 23:00:00 26.26 7.57 861 6.57WBMG 8/10/2010 0:00:00 26.07 7.55 854 6.46WBMG 8/10/2010 1:00:00 25.87 7.53 853 6.36WBMG 8/10/2010 2:00:00 25.65 7.51 843 6.34WBMG 8/10/2010 3:00:00 25.45 7.49 833 6.27WBMG 8/10/2010 4:00:00 25.28 7.48 813 6.18WBMG 8/10/2010 5:00:00 25.04 7.46 810 6.2WBMG 8/10/2010 6:00:00 24.86 7.45 806 6.16WBMG 8/10/2010 7:00:00 24.69 7.43 812 6.2WBMG 8/10/2010 8:00:00 24.63 7.43 816 6.23WBMG 8/10/2010 9:00:00 24.55 7.43 824 6.33WBMG 8/10/2010 10:00:00 24.53 7.43 824 6.46WBMG 8/10/2010 11:00:00 24.52 7.45 841 6.68WBMG 8/10/2010 12:00:00 25.01 7.48 816 7.06WBMG 8/10/2010 13:00:00 25.09 7.49 830 7.25WBMG 8/10/2010 14:00:00 25.52 7.53 835 7.59WBMG 8/10/2010 15:00:00 26.27 7.59 836 8.05WBMG 8/10/2010 16:00:00 26.53 7.61 844 8.11WBMG 8/10/2010 17:00:00 26.7 7.6 842 7.86WBMG 8/10/2010 18:00:00 26.64 7.57 849 7.44WBMG 8/10/2010 19:00:00 26.7 7.56 853 7.16WBMG 8/10/2010 20:00:00 26.81 7.55 843 6.79WBMG 8/10/2010 21:00:00 26.73 7.53 860 6.69WBMG 8/10/2010 22:00:00 26.67 7.53 852 6.52WBMG 8/10/2010 23:00:00 26.52 7.51 868 6.48WBMG 8/11/2010 0:00:00 26.37 7.5 870 6.34WBMG 8/11/2010 1:00:00 26.2 7.49 869 6.28WBMG 8/11/2010 2:00:00 25.98 7.47 879 6.2WBMG 8/11/2010 3:00:00 25.8 7.46 877 6.15WBMG 8/11/2010 4:00:00 25.59 7.45 877 6.04WBMG 8/11/2010 5:00:00 25.38 7.44 878 6.07WBMG 8/11/2010 6:00:00 25.19 7.44 879 6.03WBMG 8/11/2010 7:00:00 25.01 7.43 881 6.08WBMG 8/11/2010 8:00:00 24.91 7.43 886 6.22WBMG 8/11/2010 9:00:00 24.94 7.45 888 6.46WBMG 8/11/2010 10:00:00 25.2 7.48 884 6.8WBMG 8/11/2010 11:00:00 25.53 7.53 889 7.37WBMG 8/11/2010 12:00:00 26.07 7.57 888 7.79

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/11/2010 13:00:00 26.67 7.62 891 8.12WBMG 8/11/2010 14:00:00 27.24 7.66 884 8.34WBMG 8/11/2010 15:00:00 27.81 7.69 888 8.5WBMG 8/11/2010 16:00:00 28.2 7.72 896 8.49WBMG 8/11/2010 17:00:00 28.46 7.71 902 8.17WBMG 8/11/2010 18:00:00 28.59 7.7 908 7.64WBMG 8/11/2010 19:00:00 28.43 7.65 917 7.03WBMG 8/11/2010 20:00:00 28.32 7.62 922 6.63WBMG 8/11/2010 21:00:00 28.24 7.6 919 6.4WBMG 8/11/2010 22:00:00 28.06 7.59 925 6.24WBMG 8/11/2010 23:00:00 27.8 7.56 927 6.11WBMG 8/12/2010 0:00:00 27.57 7.55 915 5.99WBMG 8/12/2010 1:00:00 27.26 7.53 923 6WBMG 8/12/2010 2:00:00 26.93 7.51 914 5.92WBMG 8/12/2010 3:00:00 26.64 7.5 912 5.9WBMG 8/12/2010 4:00:00 26.31 7.49 922 6.11WBMG 8/12/2010 5:00:00 26.03 7.47 915 6.05WBMG 8/12/2010 6:00:00 25.76 7.46 925 6.1WBMG 8/12/2010 7:00:00 25.44 7.45 926 6.09WBMG 8/12/2010 8:00:00 25.29 7.45 927 6.29WBMG 8/12/2010 9:00:00 25.33 7.47 924 6.48WBMG 8/12/2010 10:00:00 25.6 7.5 917 6.96WBMG 8/12/2010 11:00:00 26.05 7.55 919 7.66WBMG 8/12/2010 12:00:00 26.6 7.61 919 8.18WBMG 8/12/2010 13:00:00 27.39 7.66 920 8.65WBMG 8/12/2010 14:00:00 28.07 7.71 916 8.9WBMG 8/12/2010 15:00:00 28.64 7.78 922 8.76WBMG 8/12/2010 16:00:00 29.05 7.82 923 8.84WBMG 8/12/2010 17:00:00 29.19 7.8 926 8.35WBMG 8/12/2010 18:00:00 28.99 7.76 936 7.63WBMG 8/12/2010 19:00:00 28.9 7.72 941 7WBMG 8/12/2010 20:00:00 28.79 7.69 950 6.53WBMG 8/12/2010 21:00:00 28.63 7.66 953 6.13WBMG 8/12/2010 22:00:00 28.52 7.64 965 5.96WBMG 8/12/2010 23:00:00 28.37 7.63 965 5.88WBMG 8/13/2010 0:00:00 28.11 7.61 965 5.78WBMG 8/13/2010 1:00:00 27.85 7.6 967 5.75WBMG 8/13/2010 2:00:00 27.55 7.58 972 5.76WBMG 8/13/2010 3:00:00 27.13 7.56 968 5.74WBMG 8/13/2010 4:00:00 26.76 7.55 967 5.81WBMG 8/13/2010 5:00:00 26.43 7.54 962 5.82WBMG 8/13/2010 6:00:00 26.09 7.53 969 5.8WBMG 8/13/2010 7:00:00 25.76 7.52 971 5.83WBMG 8/13/2010 8:00:00 25.6 7.52 979 6.08

West Branch DuPage River McDowell Grove Forest Preserve Page 50 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/13/2010 9:00:00 25.61 7.53 973 6.36WBMG 8/13/2010 10:00:00 25.77 7.57 975 6.92WBMG 8/13/2010 11:00:00 26.15 7.63 974 7.6WBMG 8/13/2010 12:00:00 26.68 7.69 980 8.21WBMG 8/13/2010 13:00:00 27.4 7.75 987 8.7WBMG 8/13/2010 14:00:00 27.82 7.79 986 8.91WBMG 8/13/2010 15:00:00 28.07 7.8 994 8.83WBMG 8/13/2010 16:00:00 28.55 7.83 1001 8.95WBMG 8/13/2010 17:00:00 28.66 7.86 1000 8.86WBMG 8/13/2010 18:00:00 28.57 7.83 1000 8.23WBMG 8/13/2010 19:00:00 28.42 7.76 1013 7.34WBMG 8/13/2010 20:00:00 28.26 7.72 1016 6.68WBMG 8/13/2010 21:00:00 27.82 7.72 989 6.44WBMG 8/13/2010 22:00:00 27.58 7.68 938 6.17WBMG 8/13/2010 23:00:00 27.14 7.6 935 5.87WBMG 8/14/2010 0:00:00 27 7.59 948 5.9WBMG 8/14/2010 1:00:00 26.8 7.58 956 5.85WBMG 8/14/2010 2:00:00 26.45 7.55 933 5.87WBMG 8/14/2010 3:00:00 26.01 7.5 852 5.73WBMG 8/14/2010 4:00:00 25.68 7.45 821 5.67WBMG 8/14/2010 5:00:00 25.35 7.43 808 5.67WBMG 8/14/2010 6:00:00 25.12 7.42 821 5.73WBMG 8/14/2010 7:00:00 24.88 7.41 834 5.77WBMG 8/14/2010 8:00:00 24.75 7.4 832 5.81WBMG 8/14/2010 9:00:00 24.74 7.4 830 5.91WBMG 8/14/2010 10:00:00 24.75 7.4 825 6.03WBMG 8/14/2010 11:00:00 25.13 7.43 809 6.28WBMG 8/14/2010 12:00:00 25.75 7.47 795 6.66WBMG 8/14/2010 13:00:00 26.17 7.5 793 6.91WBMG 8/14/2010 14:00:00 26.56 7.51 789 6.95WBMG 8/14/2010 15:00:00 26.83 7.52 796 6.89WBMG 8/14/2010 16:00:00 27.42 7.55 805 7.1WBMG 8/14/2010 17:00:00 27.74 7.59 817 7.35WBMG 8/14/2010 18:00:00 27.77 7.58 821 7.13WBMG 8/14/2010 19:00:00 27.73 7.56 816 6.84WBMG 8/14/2010 20:00:00 27.66 7.54 818 6.6WBMG 8/14/2010 21:00:00 27.68 7.53 807 6.44WBMG 8/14/2010 22:00:00 27.56 7.52 816 6.32WBMG 8/14/2010 23:00:00 27.37 7.5 814 6.21WBMG 8/15/2010 0:00:00 27.13 7.49 813 6.09WBMG 8/15/2010 1:00:00 26.87 7.48 815 6.02WBMG 8/15/2010 2:00:00 26.6 7.47 821 5.98WBMG 8/15/2010 3:00:00 26.31 7.45 827 6WBMG 8/15/2010 4:00:00 26.05 7.44 825 5.96

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/15/2010 5:00:00 25.79 7.42 827 5.94WBMG 8/15/2010 6:00:00 25.56 7.4 831 5.98WBMG 8/15/2010 7:00:00 25.35 7.39 829 5.93WBMG 8/15/2010 8:00:00 25.22 7.39 830 6.12WBMG 8/15/2010 9:00:00 25.26 7.41 829 6.39WBMG 8/15/2010 10:00:00 25.36 7.44 831 6.73WBMG 8/15/2010 11:00:00 25.69 7.48 833 7.26WBMG 8/15/2010 12:00:00 26.09 7.54 836 7.88WBMG 8/15/2010 13:00:00 26.67 7.61 837 8.45WBMG 8/15/2010 14:00:00 27.2 7.66 838 8.79WBMG 8/15/2010 15:00:00 27.68 7.71 839 9.02WBMG 8/15/2010 16:00:00 27.99 7.74 840 9.03WBMG 8/15/2010 17:00:00 28.05 7.75 847 8.74WBMG 8/15/2010 18:00:00 27.85 7.71 852 8.19WBMG 8/15/2010 19:00:00 27.5 7.66 859 7.5WBMG 8/15/2010 20:00:00 27.23 7.61 862 6.99WBMG 8/15/2010 21:00:00 27.02 7.59 861 6.74WBMG 8/15/2010 22:00:00 26.74 7.57 861 6.52WBMG 8/15/2010 23:00:00 26.37 7.54 869 6.53WBMG 8/16/2010 0:00:00 25.91 7.5 868 6.38WBMG 8/16/2010 1:00:00 25.46 7.47 867 6.24WBMG 8/16/2010 2:00:00 25.06 7.45 865 6.21WBMG 8/16/2010 3:00:00 24.68 7.43 870 6.29WBMG 8/16/2010 4:00:00 24.29 7.41 871 6.33WBMG 8/16/2010 5:00:00 23.89 7.39 874 6.41WBMG 8/16/2010 6:00:00 23.51 7.37 876 6.43WBMG 8/16/2010 7:00:00 23.19 7.35 882 6.5WBMG 8/16/2010 8:00:00 22.95 7.35 886 6.65WBMG 8/16/2010 9:00:00 22.88 7.36 884 6.85WBMG 8/16/2010 10:00:00 23.03 7.4 883 7.35WBMG 8/16/2010 11:00:00 23.34 7.46 888 8.09WBMG 8/16/2010 12:00:00 23.81 7.53 889 8.76WBMG 8/16/2010 13:00:00 24.45 7.61 884 9.33WBMG 8/16/2010 14:00:00 25.01 7.67 886 9.69WBMG 8/16/2010 15:00:00 25.46 7.72 888 9.83WBMG 8/16/2010 16:00:00 25.87 7.76 889 9.88WBMG 8/16/2010 17:00:00 25.94 7.75 895 9.59WBMG 8/16/2010 18:00:00 25.8 7.74 900 9.04WBMG 8/16/2010 19:00:00 25.44 7.65 914 8.06WBMG 8/16/2010 20:00:00 25.22 7.59 920 7.32WBMG 8/16/2010 21:00:00 25.13 7.56 929 6.91WBMG 8/16/2010 22:00:00 24.99 7.54 925 6.65WBMG 8/16/2010 23:00:00 24.83 7.52 929 6.54WBMG 8/17/2010 0:00:00 24.6 7.5 941 6.52

West Branch DuPage River McDowell Grove Forest Preserve Page 52 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/17/2010 1:00:00 24.27 7.52 944 6.46WBMG 8/17/2010 2:00:00 23.89 7.51 938 6.43WBMG 8/17/2010 3:00:00 23.57 7.48 944 6.45WBMG 8/17/2010 4:00:00 23.26 7.47 945 6.5WBMG 8/17/2010 5:00:00 22.97 7.45 943 6.49WBMG 8/17/2010 6:00:00 22.67 7.44 943 6.49WBMG 8/17/2010 7:00:00 22.45 7.42 948 6.58WBMG 8/17/2010 8:00:00 22.3 7.42 954 6.79WBMG 8/17/2010 9:00:00 22.24 7.43 952 7.07WBMG 8/17/2010 10:00:00 22.34 7.47 958 7.67WBMG 8/17/2010 11:00:00 22.7 7.53 952 8.41WBMG 8/17/2010 12:00:00 22.96 7.6 948 9.06WBMG 8/17/2010 13:00:00 22.93 7.61 949 9.14WBMG 8/17/2010 14:00:00 22.94 7.6 944 9WBMG 8/17/2010 15:00:00 23.11 7.61 941 9.06WBMG 8/17/2010 16:00:00 23.24 7.64 943 9.29WBMG 8/17/2010 17:00:00 23.23 7.65 955 9.2WBMG 8/17/2010 18:00:00 23.2 7.63 951 8.82WBMG 8/17/2010 19:00:00 23.07 7.59 960 8.21WBMG 8/17/2010 20:00:00 22.93 7.54 962 7.61WBMG 8/17/2010 21:00:00 22.8 7.51 969 7.23WBMG 8/17/2010 22:00:00 22.69 7.49 972 7.02WBMG 8/17/2010 23:00:00 22.58 7.48 979 6.92WBMG 8/18/2010 0:00:00 22.44 7.47 982 6.92WBMG 8/18/2010 1:00:00 22.29 7.45 981 6.88WBMG 8/18/2010 2:00:00 22.13 7.43 990 6.85WBMG 8/18/2010 3:00:00 21.94 7.41 989 6.79WBMG 8/18/2010 4:00:00 21.75 7.39 992 6.74WBMG 8/18/2010 5:00:00 21.59 7.37 991 6.68WBMG 8/18/2010 6:00:00 21.44 7.35 988 6.67WBMG 8/18/2010 7:00:00 21.3 7.34 987 6.7WBMG 8/18/2010 8:00:00 21.23 7.34 988 6.84WBMG 8/18/2010 9:00:00 21.31 7.36 988 7.27WBMG 8/18/2010 10:00:00 21.49 7.41 985 7.85WBMG 8/18/2010 11:00:00 21.89 7.48 977 8.56WBMG 8/18/2010 12:00:00 22.48 7.57 982 9.34WBMG 8/18/2010 13:00:00 23.05 7.67 978 10.07WBMG 8/18/2010 14:00:00 23.53 7.73 976 10.44WBMG 8/18/2010 15:00:00 23.7 7.74 980 10.32WBMG 8/18/2010 16:00:00 24.25 7.77 984 10.28WBMG 8/18/2010 17:00:00 24.8 7.83 980 10.35WBMG 8/18/2010 18:00:00 24.81 7.81 982 9.8WBMG 8/18/2010 19:00:00 24.57 7.74 986 8.8WBMG 8/18/2010 20:00:00 24.31 7.66 998 7.83

West Branch DuPage River McDowell Grove Forest Preserve Page 53 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/18/2010 21:00:00 24.26 7.62 1001 7.25WBMG 8/18/2010 22:00:00 24.22 7.59 1004 6.8WBMG 8/18/2010 23:00:00 24.19 7.58 1011 6.67WBMG 8/19/2010 0:00:00 24.08 7.57 967 6.58WBMG 8/19/2010 1:00:00 23.87 7.55 1014 6.41WBMG 8/19/2010 2:00:00 23.65 7.51 1021 6.39WBMG 8/19/2010 3:00:00 23.41 7.49 1027 6.37WBMG 8/19/2010 4:00:00 23.16 7.48 1024 6.39WBMG 8/19/2010 5:00:00 22.88 7.47 1016 6.3WBMG 8/19/2010 6:00:00 22.63 7.48 1018 6.29WBMG 8/19/2010 7:00:00 22.41 7.47 1023 6.37WBMG 8/19/2010 8:00:00 22.25 7.47 1017 6.55WBMG 8/19/2010 9:00:00 22.31 7.49 1020 6.91WBMG 8/19/2010 10:00:00 22.58 7.53 1018 7.59WBMG 8/19/2010 11:00:00 23.01 7.61 1021 8.56WBMG 8/19/2010 12:00:00 23.6 7.7 1020 9.49WBMG 8/19/2010 13:00:00 24.25 7.78 1019 10.07WBMG 8/19/2010 14:00:00 24.84 7.82 1016 10.26WBMG 8/19/2010 15:00:00 25.37 8.02 1014 10.45WBMG 8/19/2010 16:00:00 25.94 7.98 1012 10.66WBMG 8/19/2010 17:00:00 26.25 8.01 1007 10.45WBMG 8/19/2010 18:00:00 26.12 7.97 1006 9.81WBMG 8/19/2010 19:00:00 25.85 7.9 1014 8.81WBMG 8/19/2010 20:00:00 25.72 7.83 1023 7.75WBMG 8/19/2010 21:00:00 25.7 7.77 1027 7.08WBMG 8/19/2010 22:00:00 25.67 7.7 1015 6.53WBMG 8/19/2010 23:00:00 25.61 7.67 1004 6.25WBMG 8/20/2010 0:00:00 25.48 7.64 1001 6.17WBMG 8/20/2010 1:00:00 25.32 7.61 1005 6.16WBMG 8/20/2010 2:00:00 25.11 7.6 1007 6.12WBMG 8/20/2010 3:00:00 24.91 7.58 1011 6.08WBMG 8/20/2010 4:00:00 24.62 7.55 1010 5.94WBMG 8/20/2010 5:00:00 24.37 7.54 1016 5.98WBMG 8/20/2010 6:00:00 24.14 7.53 1020 5.99WBMG 8/20/2010 7:00:00 23.94 7.51 1018 5.95WBMG 8/20/2010 8:00:00 23.82 7.51 1024 6.02WBMG 8/20/2010 9:00:00 23.86 7.53 1029 6.43WBMG 8/20/2010 10:00:00 24.12 7.59 1031 7.13WBMG 8/20/2010 11:00:00 24.48 7.68 1036 8.2WBMG 8/20/2010 12:00:00 24.98 7.77 1036 9.23WBMG 8/20/2010 13:00:00 25.47 7.85 1042 9.91WBMG 8/20/2010 14:00:00 26.3 7.93 1041 10.54WBMG 8/20/2010 15:00:00 26.95 8 1040 10.86WBMG 8/20/2010 16:00:00 26.78 7.96 1032 10.18

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/20/2010 17:00:00 26.65 7.88 1033 9.08WBMG 8/20/2010 18:00:00 26.48 7.85 1023 8.69WBMG 8/20/2010 19:00:00 26.29 7.79 1011 7.96WBMG 8/20/2010 20:00:00 26.17 7.71 1010 7.12WBMG 8/20/2010 21:00:00 26.14 7.67 1004 6.48WBMG 8/20/2010 22:00:00 26.1 7.65 1009 6.14WBMG 8/20/2010 23:00:00 25.97 7.62 1011 6WBMG 8/21/2010 0:00:00 25.73 7.61 1009 5.91WBMG 8/21/2010 1:00:00 25.54 7.6 1019 5.87WBMG 8/21/2010 2:00:00 25.24 7.59 1002 6.04WBMG 8/21/2010 3:00:00 25.03 7.58 999 6.08WBMG 8/21/2010 4:00:00 24.72 7.57 969 6.08WBMG 8/21/2010 5:00:00 24.35 7.5 935 5.92WBMG 8/21/2010 6:00:00 24.17 7.48 885 5.89WBMG 8/21/2010 7:00:00 24.06 7.47 907 5.91WBMG 8/21/2010 8:00:00 24.04 7.47 932 5.96WBMG 8/21/2010 9:00:00 24.12 7.49 935 6.26WBMG 8/21/2010 10:00:00 24.16 7.49 921 6.48WBMG 8/21/2010 11:00:00 24.33 7.5 922 6.78WBMG 8/21/2010 12:00:00 24.56 7.51 909 7.06WBMG 8/21/2010 13:00:00 25.06 7.55 893 7.52WBMG 8/21/2010 14:00:00 25.66 7.62 911 7.9WBMG 8/21/2010 15:00:00 26.09 7.65 932 8.03WBMG 8/21/2010 16:00:00 26.59 7.7 957 8.27WBMG 8/21/2010 17:00:00 26.62 7.68 961 7.93WBMG 8/21/2010 18:00:00 26.69 7.65 935 7.58WBMG 8/21/2010 19:00:00 26.65 7.61 906 7.09WBMG 8/21/2010 20:00:00 26.58 7.57 884 6.72WBMG 8/21/2010 21:00:00 26.48 7.54 867 6.48WBMG 8/21/2010 22:00:00 26.34 7.52 853 6.27WBMG 8/21/2010 23:00:00 26.11 7.51 861 6.28WBMG 8/22/2010 0:00:00 25.82 7.52 864 6.22WBMG 8/22/2010 1:00:00 25.55 7.5 866 6.16WBMG 8/22/2010 2:00:00 25.28 7.48 866 6.08WBMG 8/22/2010 3:00:00 25.07 7.47 870 6.02WBMG 8/22/2010 4:00:00 24.8 7.46 870 6.02WBMG 8/22/2010 5:00:00 24.47 7.45 873 6.07WBMG 8/22/2010 6:00:00 24.15 7.44 874 6.26WBMG 8/22/2010 7:00:00 23.86 7.43 870 6.26WBMG 8/22/2010 8:00:00 23.7 7.42 871 6.39WBMG 8/22/2010 9:00:00 23.63 7.44 869 6.71WBMG 8/22/2010 10:00:00 23.75 7.46 867 7.19WBMG 8/22/2010 11:00:00 24.2 7.53 859 7.94WBMG 8/22/2010 12:00:00 24.76 7.62 857 8.81

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/22/2010 13:00:00 25.39 7.71 857 9.47WBMG 8/22/2010 14:00:00 26.01 7.77 862 9.91WBMG 8/22/2010 15:00:00 26.57 7.84 870 10.16WBMG 8/22/2010 16:00:00 27 7.87 878 10.11WBMG 8/22/2010 17:00:00 27.13 7.87 886 9.72WBMG 8/22/2010 18:00:00 27.03 7.82 894 8.95WBMG 8/22/2010 19:00:00 26.74 7.74 901 7.9WBMG 8/22/2010 20:00:00 26.52 7.67 905 7.09WBMG 8/22/2010 21:00:00 26.42 7.63 906 6.54WBMG 8/22/2010 22:00:00 26.29 7.61 908 6.19WBMG 8/22/2010 23:00:00 26.12 7.59 909 6.05WBMG 8/23/2010 0:00:00 25.87 7.57 912 5.92WBMG 8/23/2010 1:00:00 25.55 7.54 915 5.94WBMG 8/23/2010 2:00:00 25.17 7.51 919 5.9WBMG 8/23/2010 3:00:00 24.8 7.49 922 5.87WBMG 8/23/2010 4:00:00 24.39 7.47 921 5.85WBMG 8/23/2010 5:00:00 24.06 7.45 926 5.89WBMG 8/23/2010 6:00:00 23.71 7.43 926 5.97WBMG 8/23/2010 7:00:00 23.42 7.41 929 5.99WBMG 8/23/2010 8:00:00 23.2 7.41 928 6.13WBMG 8/23/2010 9:00:00 23.18 7.42 938 6.54WBMG 8/23/2010 10:00:00 23.33 7.47 938 7.24WBMG 8/23/2010 11:00:00 23.6 7.55 940 8.21WBMG 8/23/2010 12:00:00 23.97 7.64 936 9.02WBMG 8/23/2010 13:00:00 24.23 7.69 937 9.52WBMG 8/23/2010 14:00:00 24.77 7.75 940 9.92WBMG 8/23/2010 15:00:00 25.43 7.82 940 10.41WBMG 8/23/2010 16:00:00 26.01 7.9 942 10.72WBMG 8/23/2010 17:00:00 26.31 7.92 941 10.44WBMG 8/23/2010 18:00:00 26.06 7.87 946 9.6WBMG 8/23/2010 19:00:00 25.61 7.76 953 8.43WBMG 8/23/2010 20:00:00 25.31 7.68 958 7.49WBMG 8/23/2010 21:00:00 25.17 7.63 955 6.96WBMG 8/23/2010 22:00:00 25.03 7.58 940 6.6WBMG 8/23/2010 23:00:00 24.86 7.54 930 6.4WBMG 8/24/2010 0:00:00 24.64 7.51 926 6.3WBMG 8/24/2010 1:00:00 24.39 7.48 927 6.21WBMG 8/24/2010 2:00:00 24.09 7.45 928 6.17WBMG 8/24/2010 3:00:00 23.76 7.42 926 6.12WBMG 8/24/2010 4:00:00 23.48 7.41 928 6.1WBMG 8/24/2010 5:00:00 23.21 7.39 928 6.09WBMG 8/24/2010 6:00:00 22.92 7.37 928 6.07WBMG 8/24/2010 7:00:00 22.68 7.36 931 6.09WBMG 8/24/2010 8:00:00 22.5 7.35 935 6.26

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/24/2010 9:00:00 22.51 7.37 941 6.74WBMG 8/24/2010 10:00:00 22.71 7.43 942 7.5WBMG 8/24/2010 11:00:00 23.02 7.5 941 8.35WBMG 8/24/2010 12:00:00 23.61 7.59 945 9.22WBMG 8/24/2010 13:00:00 24.27 7.68 943 9.95WBMG 8/24/2010 14:00:00 24.86 7.75 943 10.34WBMG 8/24/2010 15:00:00 25.51 7.83 942 10.85WBMG 8/24/2010 16:00:00 25.91 7.87 938 10.86WBMG 8/24/2010 17:00:00 25.78 7.84 940 10.16WBMG 8/24/2010 18:00:00 25.69 7.82 941 9.76WBMG 8/24/2010 19:00:00 25.36 7.74 943 8.71WBMG 8/24/2010 20:00:00 25.08 7.67 949 7.76WBMG 8/24/2010 21:00:00 24.99 7.61 956 7WBMG 8/24/2010 22:00:00 24.99 7.58 955 6.37WBMG 8/24/2010 23:00:00 25.02 7.57 960 6.19WBMG 8/25/2010 0:00:00 24.98 7.56 961 6.08WBMG 8/25/2010 1:00:00 24.76 7.55 962 6.01WBMG 8/25/2010 2:00:00 24.42 7.53 964 5.98WBMG 8/25/2010 3:00:00 24.1 7.5 966 5.93WBMG 8/25/2010 4:00:00 23.74 7.47 967 5.93WBMG 8/25/2010 5:00:00 23.33 7.44 968 5.88WBMG 8/25/2010 6:00:00 22.93 7.42 972 5.89WBMG 8/25/2010 7:00:00 22.51 7.4 974 6.02WBMG 8/25/2010 8:00:00 22.21 7.39 978 6.2WBMG 8/25/2010 9:00:00 22.11 7.4 985 6.63WBMG 8/25/2010 10:00:00 22.18 7.44 987 7.2WBMG 8/25/2010 11:00:00 22.51 7.51 991 8.19WBMG 8/25/2010 12:00:00 22.99 7.61 996 9.38WBMG 8/25/2010 13:00:00 23.55 7.72 995 10.25WBMG 8/25/2010 14:00:00 24.16 7.81 996 10.97WBMG 8/25/2010 15:00:00 24.65 7.88 998 11.33WBMG 8/25/2010 16:00:00 24.81 7.92 995 11.24WBMG 8/25/2010 17:00:00 24.83 7.89 997 10.68WBMG 8/25/2010 18:00:00 24.67 7.87 998 10.18WBMG 8/25/2010 19:00:00 24.18 7.78 1000 9.14WBMG 8/25/2010 20:00:00 23.69 7.7 1005 8.12WBMG 8/25/2010 21:00:00 23.4 7.63 1009 7.28WBMG 8/25/2010 22:00:00 23.19 7.59 1010 6.78WBMG 8/25/2010 23:00:00 23.02 7.57 1013 6.46WBMG 8/26/2010 0:00:00 22.83 7.55 1014 6.29WBMG 8/26/2010 1:00:00 22.61 7.53 1018 6.25WBMG 8/26/2010 2:00:00 22.36 7.51 1019 6.21WBMG 8/26/2010 3:00:00 22.09 7.48 1018 6.21WBMG 8/26/2010 4:00:00 21.82 7.46 1017 6.2

West Branch DuPage River McDowell Grove Forest Preserve Page 57 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/26/2010 5:00:00 21.49 7.43 1014 6.13WBMG 8/26/2010 6:00:00 21.23 7.4 1019 6.15WBMG 8/26/2010 7:00:00 20.94 7.38 1023 6.2WBMG 8/26/2010 8:00:00 20.72 7.36 1022 6.27WBMG 8/26/2010 9:00:00 20.78 7.37 1033 6.65WBMG 8/26/2010 10:00:00 20.91 7.42 1030 7.32WBMG 8/26/2010 11:00:00 21.18 7.48 1038 8.24WBMG 8/26/2010 12:00:00 21.51 7.58 1041 9.3WBMG 8/26/2010 13:00:00 21.95 7.66 1046 10WBMG 8/26/2010 14:00:00 22.52 7.74 1049 10.58WBMG 8/26/2010 15:00:00 23.29 7.83 1052 11.21WBMG 8/26/2010 16:00:00 24.06 7.94 1052 11.71WBMG 8/26/2010 17:00:00 24.4 7.97 1051 11.63WBMG 8/26/2010 18:00:00 24.27 7.93 1048 10.92WBMG 8/26/2010 19:00:00 23.78 7.84 1051 9.74WBMG 8/26/2010 20:00:00 23.27 7.76 1049 8.54WBMG 8/26/2010 21:00:00 22.92 7.67 1052 7.55WBMG 8/26/2010 22:00:00 22.73 7.62 1048 6.91WBMG 8/26/2010 23:00:00 22.62 7.59 1042 6.51WBMG 8/27/2010 0:00:00 22.49 7.58 1046 6.33WBMG 8/27/2010 1:00:00 22.32 7.56 1048 6.27WBMG 8/27/2010 2:00:00 22.12 7.54 1050 6.23WBMG 8/27/2010 3:00:00 21.89 7.52 1051 6.25WBMG 8/27/2010 4:00:00 21.65 7.49 1054 6.26WBMG 8/27/2010 5:00:00 21.35 7.46 1051 6.19WBMG 8/27/2010 6:00:00 21.1 7.43 1053 6.26WBMG 8/27/2010 7:00:00 20.79 7.4 1053 6.17WBMG 8/27/2010 8:00:00 20.61 7.38 1054 6.27WBMG 8/27/2010 9:00:00 20.66 7.4 1061 6.81WBMG 8/27/2010 10:00:00 20.85 7.45 1063 7.51WBMG 8/27/2010 11:00:00 21.16 7.52 1059 8.43WBMG 8/27/2010 12:00:00 21.62 7.62 1064 9.49WBMG 8/27/2010 13:00:00 22.47 7.73 1063 10.48WBMG 8/27/2010 14:00:00 23.22 7.85 1069 11.3WBMG 8/27/2010 15:00:00 24 7.95 1066 11.79WBMG 8/27/2010 16:00:00 24.55 8 1066 12.05WBMG 8/27/2010 17:00:00 24.8 8.01 1068 11.76WBMG 8/27/2010 18:00:00 24.71 7.99 1070 11.18WBMG 8/27/2010 19:00:00 24.41 7.91 1065 10.04WBMG 8/27/2010 20:00:00 23.93 7.8 1067 8.78WBMG 8/27/2010 21:00:00 23.54 7.7 1069 7.64WBMG 8/27/2010 22:00:00 23.31 7.64 1069 6.89WBMG 8/27/2010 23:00:00 23.21 7.61 1072 6.45WBMG 8/28/2010 0:00:00 23.14 7.59 1074 6.22

West Branch DuPage River McDowell Grove Forest Preserve Page 58 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/28/2010 1:00:00 23.06 7.58 1077 6.02WBMG 8/28/2010 2:00:00 22.94 7.58 1080 6.02WBMG 8/28/2010 3:00:00 22.78 7.56 1082 5.97WBMG 8/28/2010 4:00:00 22.56 7.53 1082 5.98WBMG 8/28/2010 5:00:00 22.33 7.5 1082 5.91WBMG 8/28/2010 6:00:00 22.06 7.47 1081 5.88WBMG 8/28/2010 7:00:00 21.75 7.44 1078 5.88WBMG 8/28/2010 8:00:00 21.54 7.42 1079 5.9WBMG 8/28/2010 9:00:00 21.49 7.41 1081 6.23WBMG 8/28/2010 10:00:00 21.62 7.44 1084 6.82WBMG 8/28/2010 11:00:00 21.8 7.48 1089 7.6WBMG 8/28/2010 12:00:00 22.47 7.58 1088 8.74WBMG 8/28/2010 13:00:00 23.21 7.72 1090 10.02WBMG 8/28/2010 14:00:00 24.07 7.86 1089 11.02WBMG 8/28/2010 15:00:00 24.69 7.94 1093 11.76WBMG 8/28/2010 16:00:00 25.2 8.01 1095 12.03WBMG 8/28/2010 17:00:00 25.52 8.02 1093 11.73WBMG 8/28/2010 18:00:00 25.44 7.99 1094 11.13WBMG 8/28/2010 19:00:00 25.04 7.91 1091 10WBMG 8/28/2010 20:00:00 24.47 7.8 1090 8.58WBMG 8/28/2010 21:00:00 24.02 7.7 1088 7.42WBMG 8/28/2010 22:00:00 23.69 7.63 1088 6.63WBMG 8/28/2010 23:00:00 23.53 7.6 1086 6.19WBMG 8/29/2010 0:00:00 23.42 7.59 1085 5.9WBMG 8/29/2010 1:00:00 23.34 7.59 1086 5.82WBMG 8/29/2010 2:00:00 23.24 7.59 1087 5.73WBMG 8/29/2010 3:00:00 23.14 7.59 1090 5.78WBMG 8/29/2010 4:00:00 23 7.58 1089 5.71WBMG 8/29/2010 5:00:00 22.87 7.55 1092 5.68WBMG 8/29/2010 6:00:00 22.72 7.53 1094 5.58WBMG 8/29/2010 7:00:00 22.58 7.51 1095 5.64WBMG 8/29/2010 8:00:00 22.47 7.49 1096 5.71WBMG 8/29/2010 9:00:00 22.52 7.49 1102 6.12WBMG 8/29/2010 10:00:00 22.75 7.53 1103 6.97WBMG 8/29/2010 11:00:00 23.01 7.59 1107 7.85WBMG 8/29/2010 12:00:00 23.61 7.7 1109 9.14WBMG 8/29/2010 13:00:00 24.46 7.84 1109 10.41WBMG 8/29/2010 14:00:00 25.2 7.96 1110 11.38WBMG 8/29/2010 15:00:00 25.59 8.02 1112 11.76WBMG 8/29/2010 16:00:00 25.91 8.05 1113 11.68WBMG 8/29/2010 17:00:00 26.1 8.04 1115 11.27WBMG 8/29/2010 18:00:00 26.21 8.01 1116 10.86WBMG 8/29/2010 19:00:00 25.92 7.96 1044 10WBMG 8/29/2010 20:00:00 25.61 7.87 1119 8.86

West Branch DuPage River McDowell Grove Forest Preserve Page 59 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/29/2010 21:00:00 25.3 7.79 1118 7.69WBMG 8/29/2010 22:00:00 25.1 7.71 1117 6.77WBMG 8/29/2010 23:00:00 25 7.66 1116 6.09WBMG 8/30/2010 0:00:00 24.97 7.65 1111 5.8WBMG 8/30/2010 1:00:00 24.92 7.63 1109 5.59WBMG 8/30/2010 2:00:00 24.85 7.62 1109 5.44WBMG 8/30/2010 3:00:00 24.76 7.62 1113 5.39WBMG 8/30/2010 4:00:00 24.64 7.61 1118 5.35WBMG 8/30/2010 5:00:00 24.47 7.58 1118 5.3WBMG 8/30/2010 6:00:00 24.27 7.56 1113 5.29WBMG 8/30/2010 7:00:00 24.08 7.53 1121 5.16WBMG 8/30/2010 8:00:00 23.93 7.51 1122 5.24WBMG 8/30/2010 9:00:00 23.94 7.52 1122 5.64WBMG 8/30/2010 10:00:00 24.04 7.54 1124 6.18WBMG 8/30/2010 11:00:00 24.2 7.58 1124 7.19WBMG 8/30/2010 12:00:00 24.72 7.68 1110 8.41WBMG 8/30/2010 13:00:00 25.41 7.8 1120 9.67WBMG 8/30/2010 14:00:00 25.89 7.92 1101 10.65WBMG 8/30/2010 15:00:00 26.23 7.98 1119 11.12WBMG 8/30/2010 16:00:00 26.29 8.01 1125 11.38WBMG 8/30/2010 17:00:00 26.4 8.02 1128 11.29WBMG 8/30/2010 18:00:00 26.29 8 1128 10.55WBMG 8/30/2010 19:00:00 26.08 7.93 1125 9.71WBMG 8/30/2010 20:00:00 25.72 7.83 1122 8.51WBMG 8/30/2010 21:00:00 25.45 7.73 1122 7.33WBMG 8/30/2010 22:00:00 25.27 7.66 1122 6.51WBMG 8/30/2010 23:00:00 25.15 7.62 1125 6.02WBMG 8/31/2010 0:00:00 25.04 7.6 1120 5.71WBMG 8/31/2010 1:00:00 24.95 7.6 1118 5.58WBMG 8/31/2010 2:00:00 24.86 7.59 1117 5.48WBMG 8/31/2010 3:00:00 24.74 7.59 1115 5.4WBMG 8/31/2010 4:00:00 24.61 7.57 1116 5.45WBMG 8/31/2010 5:00:00 24.45 7.56 1115 5.39WBMG 8/31/2010 6:00:00 24.3 7.54 1117 5.31WBMG 8/31/2010 7:00:00 24.16 7.5 1115 5.25WBMG 8/31/2010 8:00:00 24.06 7.48 1111 5.31WBMG 8/31/2010 9:00:00 24.09 7.49 1105 5.72WBMG 8/31/2010 10:00:00 24.2 7.51 1098 6.16WBMG 8/31/2010 11:00:00 24.44 7.55 1091 7.11WBMG 8/31/2010 12:00:00 25.02 7.64 1085 8.35WBMG 8/31/2010 13:00:00 25.7 7.75 1081 9.49WBMG 8/31/2010 14:00:00 26.24 7.84 1083 10.23WBMG 8/31/2010 15:00:00 26.75 7.92 1085 10.83WBMG 8/31/2010 16:00:00 27.27 7.94 1085 11.01

West Branch DuPage River McDowell Grove Forest Preserve Page 60 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 8/31/2010 17:00:00 27.45 7.98 1089 10.75WBMG 8/31/2010 18:00:00 27.31 7.95 1091 9.95WBMG 8/31/2010 19:00:00 27.07 7.88 1094 8.95WBMG 8/31/2010 20:00:00 26.73 7.78 1096 7.74WBMG 8/31/2010 21:00:00 26.47 7.7 1098 6.74WBMG 8/31/2010 22:00:00 26.31 7.64 1099 5.85WBMG 8/31/2010 23:00:00 26.27 7.61 1097 5.43WBMG 9/1/2010 0:00:00 26.23 7.6 1096 5.14WBMG 9/1/2010 1:00:00 26.14 7.6 1096 4.97WBMG 9/1/2010 2:00:00 26.03 7.6 1096 4.87WBMG 9/1/2010 3:00:00 25.91 7.59 1094 4.88WBMG 9/1/2010 4:00:00 25.79 7.58 1092 4.9WBMG 9/1/2010 5:00:00 25.67 7.57 1091 4.91WBMG 9/1/2010 6:00:00 25.45 7.57 1075 5.12WBMG 9/1/2010 7:00:00 25.24 7.55 1062 5.23WBMG 9/1/2010 8:00:00 24.98 7.51 1049 5.19WBMG 9/1/2010 9:00:00 24.69 7.47 1012 5.13WBMG 9/1/2010 10:00:00 24.66 7.47 1026 5.68WBMG 9/1/2010 11:00:00 24.59 7.49 1013 6.4WBMG 9/1/2010 12:00:00 24.74 7.55 1011 7.29WBMG 9/1/2010 13:00:00 24.87 7.63 1008 8.04WBMG 9/1/2010 14:00:00 25.23 7.7 1010 8.72WBMG 9/1/2010 15:00:00 25.77 7.89 976 9.64WBMG 9/1/2010 16:00:00 26.1 7.99 963 10.15WBMG 9/1/2010 17:00:00 25.92 7.95 958 9.53WBMG 9/1/2010 18:00:00 25.8 7.88 954 8.59WBMG 9/1/2010 19:00:00 25.59 7.81 961 7.77WBMG 9/1/2010 20:00:00 25.41 7.76 968 7.02WBMG 9/1/2010 21:00:00 25.3 7.72 973 6.48WBMG 9/1/2010 22:00:00 25.23 7.7 975 6.2WBMG 9/1/2010 23:00:00 25.15 7.69 975 6.07WBMG 9/2/2010 0:00:00 25.07 7.68 974 5.96WBMG 9/2/2010 1:00:00 24.98 7.66 983 5.96WBMG 9/2/2010 2:00:00 24.85 7.65 994 5.86WBMG 9/2/2010 3:00:00 24.71 7.63 1005 5.77WBMG 9/2/2010 4:00:00 24.57 7.59 1015 5.77WBMG 9/2/2010 5:00:00 24.39 7.57 1008 5.67WBMG 9/2/2010 6:00:00 24.24 7.56 997 5.64WBMG 9/2/2010 7:00:00 24.06 7.54 982 5.59WBMG 9/2/2010 8:00:00 23.88 7.53 969 5.58WBMG 9/2/2010 9:00:00 23.74 7.52 962 5.66WBMG 9/2/2010 10:00:00 23.63 7.53 960 5.91WBMG 9/2/2010 11:00:00 23.52 7.55 955 6.2WBMG 9/2/2010 12:00:00 23.58 7.57 955 6.54

West Branch DuPage River McDowell Grove Forest Preserve Page 61 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/2/2010 13:00:00 23.81 7.64 955 7.53WBMG 9/2/2010 14:00:00 24.2 7.73 944 8.42WBMG 9/2/2010 15:00:00 24.46 7.77 942 8.99WBMG 9/2/2010 16:00:00 24.65 7.8 927 9.1WBMG 9/2/2010 17:00:00 24.77 7.8 916 9.02WBMG 9/2/2010 18:00:00 24.51 7.74 891 8.2WBMG 9/2/2010 19:00:00 24.27 7.67 891 7.34WBMG 9/2/2010 20:00:00 24.23 7.63 862 6.75WBMG 9/2/2010 21:00:00 24.28 7.61 844 6.5WBMG 9/2/2010 22:00:00 24.1 7.65 804 6.83WBMG 9/2/2010 23:00:00 24.12 7.62 795 6.67WBMG 9/3/2010 0:00:00 23.75 7.58 753 6.5WBMG 9/3/2010 1:00:00 23.4 7.53 734 6.33WBMG 9/3/2010 2:00:00 23.21 7.53 707 6.45WBMG 9/3/2010 3:00:00 22.99 7.54 656 6.56WBMG 9/3/2010 4:00:00 22.59 7.52 617 6.55WBMG 9/3/2010 5:00:00 22.24 7.52 616 6.51WBMG 9/3/2010 6:00:00 21.98 7.49 598 6.43WBMG 9/3/2010 7:00:00 21.81 7.48 565 6.37WBMG 9/3/2010 8:00:00 21.75 7.46 552 6.34WBMG 9/3/2010 9:00:00 21.69 7.45 543 6.37WBMG 9/3/2010 10:00:00 21.7 7.48 537 6.41WBMG 9/3/2010 11:00:00 21.79 7.47 541 6.49WBMG 9/3/2010 12:00:00 21.97 7.5 553 6.6WBMG 9/3/2010 13:00:00 22.33 7.53 566 6.77WBMG 9/3/2010 14:00:00 22.5 7.54 574 6.93WBMG 9/3/2010 15:00:00 22.74 7.56 568 6.89WBMG 9/3/2010 16:00:00 22.78 7.57 564 6.93WBMG 9/3/2010 17:00:00 22.67 7.57 561 6.86WBMG 9/3/2010 18:00:00 22.55 7.58 567 6.92WBMG 9/3/2010 19:00:00 22.32 7.58 574 6.89WBMG 9/3/2010 20:00:00 22.03 7.58 578 6.84WBMG 9/3/2010 21:00:00 21.81 7.6 584 6.87WBMG 9/3/2010 22:00:00 21.5 7.59 590 6.82WBMG 9/3/2010 23:00:00 21.22 7.59 595 6.87WBMG 9/4/2010 0:00:00 20.94 7.59 599 6.87WBMG 9/4/2010 1:00:00 20.73 7.6 604 6.9WBMG 9/4/2010 2:00:00 20.54 7.59 610 6.9WBMG 9/4/2010 3:00:00 20.33 7.58 613 6.9WBMG 9/4/2010 4:00:00 20.11 7.6 617 6.98WBMG 9/4/2010 5:00:00 19.91 7.59 624 7WBMG 9/4/2010 6:00:00 19.7 7.6 628 6.97WBMG 9/4/2010 7:00:00 19.49 7.61 633 7.04WBMG 9/4/2010 8:00:00 19.32 7.62 634 7.11

West Branch DuPage River McDowell Grove Forest Preserve Page 62 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/4/2010 9:00:00 19.26 7.63 639 7.25WBMG 9/4/2010 10:00:00 19.33 7.65 643 7.52WBMG 9/4/2010 11:00:00 19.49 7.69 648 7.89WBMG 9/4/2010 12:00:00 19.8 7.74 654 8.31WBMG 9/4/2010 13:00:00 20.25 7.79 657 8.73WBMG 9/4/2010 14:00:00 20.67 7.83 662 9.09WBMG 9/4/2010 15:00:00 20.97 7.87 667 9.28WBMG 9/4/2010 16:00:00 21.15 7.89 668 9.3WBMG 9/4/2010 17:00:00 21.13 7.87 674 9.06WBMG 9/4/2010 18:00:00 20.98 7.85 679 8.67WBMG 9/4/2010 19:00:00 20.82 7.82 683 8.26WBMG 9/4/2010 20:00:00 20.77 7.79 689 7.99WBMG 9/4/2010 21:00:00 20.67 7.78 693 7.83WBMG 9/4/2010 22:00:00 20.49 7.78 693 7.68WBMG 9/4/2010 23:00:00 20.32 7.77 699 7.61WBMG 9/5/2010 0:00:00 20.1 7.75 704 7.51WBMG 9/5/2010 1:00:00 19.86 7.73 706 7.43WBMG 9/5/2010 2:00:00 19.61 7.71 699 7.4WBMG 9/5/2010 3:00:00 19.26 7.69 705 7.37WBMG 9/5/2010 4:00:00 18.94 7.68 711 7.26WBMG 9/5/2010 5:00:00 18.6 7.67 712 7.22WBMG 9/5/2010 6:00:00 18.33 7.67 716 7.25WBMG 9/5/2010 7:00:00 18.07 7.67 721 7.28WBMG 9/5/2010 8:00:00 17.89 7.66 725 7.4WBMG 9/5/2010 9:00:00 17.87 7.68 730 7.65WBMG 9/5/2010 10:00:00 18 7.72 732 8.08WBMG 9/5/2010 11:00:00 18.3 7.78 737 8.74WBMG 9/5/2010 12:00:00 18.77 7.85 739 9.44WBMG 9/5/2010 13:00:00 19.09 7.9 740 9.76WBMG 9/5/2010 14:00:00 19.78 7.94 742 10.1WBMG 9/5/2010 15:00:00 20.33 8 745 10.44WBMG 9/5/2010 16:00:00 20.55 8 748 10.37WBMG 9/5/2010 17:00:00 20.5 7.98 751 9.9WBMG 9/5/2010 18:00:00 20.45 7.92 756 9.09WBMG 9/5/2010 19:00:00 20.56 7.87 764 8.53WBMG 9/5/2010 20:00:00 20.66 7.84 773 8.15WBMG 9/5/2010 21:00:00 20.69 7.83 780 7.89WBMG 9/5/2010 22:00:00 20.61 7.81 784 7.65WBMG 9/5/2010 23:00:00 20.53 7.79 791 7.52WBMG 9/6/2010 0:00:00 20.41 7.76 794 7.37WBMG 9/6/2010 1:00:00 20.28 7.74 799 7.28WBMG 9/6/2010 2:00:00 20.08 7.72 802 7.2WBMG 9/6/2010 3:00:00 19.92 7.71 804 7.09WBMG 9/6/2010 4:00:00 19.81 7.68 806 7.16

West Branch DuPage River McDowell Grove Forest Preserve Page 63 of 83

Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/6/2010 5:00:00 19.59 7.69 805 7.14WBMG 9/6/2010 6:00:00 19.44 7.68 808 7.1WBMG 9/6/2010 7:00:00 19.3 7.67 811 7.05WBMG 9/6/2010 8:00:00 19.15 7.68 815 7.11WBMG 9/6/2010 9:00:00 19.16 7.69 820 7.4WBMG 9/6/2010 10:00:00 19.27 7.74 821 7.97WBMG 9/6/2010 11:00:00 19.51 7.8 824 8.84WBMG 9/6/2010 12:00:00 19.65 7.87 827 9.46WBMG 9/6/2010 13:00:00 19.74 7.9 831 9.78WBMG 9/6/2010 14:00:00 19.77 7.9 833 9.69WBMG 9/6/2010 15:00:00 19.88 7.87 835 9.36WBMG 9/6/2010 16:00:00 20.16 7.9 829 9.44WBMG 9/6/2010 17:00:00 20.45 7.93 835 9.59WBMG 9/6/2010 18:00:00 20.53 7.96 836 9.62WBMG 9/6/2010 19:00:00 20.43 7.95 839 9.33WBMG 9/6/2010 20:00:00 20.3 7.9 841 8.6WBMG 9/6/2010 21:00:00 20.18 7.84 842 7.92WBMG 9/6/2010 22:00:00 20.13 7.8 854 7.51WBMG 9/6/2010 23:00:00 20.1 7.79 864 7.37WBMG 9/7/2010 0:00:00 20.08 7.79 868 7.3WBMG 9/7/2010 1:00:00 20.06 7.79 884 7.21WBMG 9/7/2010 2:00:00 20.03 7.78 886 7.18WBMG 9/7/2010 3:00:00 19.95 7.77 889 7.09WBMG 9/7/2010 4:00:00 19.89 7.75 892 6.99WBMG 9/7/2010 5:00:00 19.82 7.73 895 6.94WBMG 9/7/2010 6:00:00 19.62 7.73 896 6.9WBMG 9/7/2010 7:00:00 19.33 7.71 899 6.93WBMG 9/7/2010 8:00:00 19.09 7.7 900 6.99WBMG 9/7/2010 9:00:00 19.01 7.72 903 7.34WBMG 9/7/2010 10:00:00 19.09 7.77 904 7.87WBMG 9/7/2010 11:00:00 19.42 7.83 904 8.64WBMG 9/7/2010 12:00:00 19.92 7.89 905 9.47WBMG 9/7/2010 13:00:00 20.45 7.96 906 10.2WBMG 9/7/2010 14:00:00 21.05 8.03 908 10.76WBMG 9/7/2010 15:00:00 21.55 8.09 905 11.14WBMG 9/7/2010 16:00:00 21.87 8.11 904 11.16WBMG 9/7/2010 17:00:00 21.88 8.11 903 10.81WBMG 9/7/2010 18:00:00 21.59 8.08 903 10.17WBMG 9/7/2010 19:00:00 21.06 8.01 904 9.14WBMG 9/7/2010 20:00:00 20.69 7.94 908 8.29WBMG 9/7/2010 21:00:00 20.48 7.89 911 7.63WBMG 9/7/2010 22:00:00 20.41 7.87 917 7.25WBMG 9/7/2010 23:00:00 20.31 7.87 921 7.03WBMG 9/8/2010 0:00:00 20.21 7.88 925 6.97

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/8/2010 1:00:00 20.04 7.87 928 6.93WBMG 9/8/2010 2:00:00 19.81 7.85 930 6.85WBMG 9/8/2010 3:00:00 19.54 7.83 933 6.82WBMG 9/8/2010 4:00:00 19.25 7.81 936 6.82WBMG 9/8/2010 5:00:00 18.93 7.79 940 6.78WBMG 9/8/2010 6:00:00 18.58 7.77 942 6.76WBMG 9/8/2010 7:00:00 18.25 7.74 945 6.76WBMG 9/8/2010 8:00:00 17.99 7.74 947 6.86WBMG 9/8/2010 9:00:00 17.87 7.74 948 7.16WBMG 9/8/2010 10:00:00 17.95 7.77 949 7.68WBMG 9/8/2010 11:00:00 18.27 7.83 948 8.6WBMG 9/8/2010 12:00:00 18.76 7.9 948 9.62WBMG 9/8/2010 13:00:00 19.41 7.96 949 10.43WBMG 9/8/2010 14:00:00 20.04 8.02 951 11.16WBMG 9/8/2010 15:00:00 20.72 8.09 953 11.61WBMG 9/8/2010 16:00:00 21.21 8.11 954 11.77WBMG 9/8/2010 17:00:00 21.39 8.12 957 11.5WBMG 9/8/2010 18:00:00 21.24 8.1 956 10.93WBMG 9/8/2010 19:00:00 20.73 8.03 958 9.74WBMG 9/8/2010 20:00:00 20.27 7.95 958 8.71WBMG 9/8/2010 21:00:00 19.94 7.89 959 7.88WBMG 9/8/2010 22:00:00 19.78 7.85 962 7.36WBMG 9/8/2010 23:00:00 19.68 7.84 966 7.12WBMG 9/9/2010 0:00:00 19.58 7.83 968 6.95WBMG 9/9/2010 1:00:00 19.49 7.84 970 6.89WBMG 9/9/2010 2:00:00 19.34 7.84 973 6.88WBMG 9/9/2010 3:00:00 19.17 7.82 974 6.84WBMG 9/9/2010 4:00:00 18.93 7.79 974 6.79WBMG 9/9/2010 5:00:00 18.67 7.77 976 6.78WBMG 9/9/2010 6:00:00 18.39 7.76 978 6.75WBMG 9/9/2010 7:00:00 18.08 7.73 980 6.77WBMG 9/9/2010 8:00:00 17.85 7.73 983 6.81WBMG 9/9/2010 9:00:00 17.82 7.73 985 7.08WBMG 9/9/2010 10:00:00 17.97 7.76 987 7.69WBMG 9/9/2010 11:00:00 18.35 7.82 990 8.87WBMG 9/9/2010 12:00:00 18.85 7.91 991 10.08WBMG 9/9/2010 13:00:00 19.25 8 993 10.94WBMG 9/9/2010 14:00:00 19.43 8.05 996 11.35WBMG 9/9/2010 15:00:00 19.47 8.06 999 11.32WBMG 9/9/2010 16:00:00 19.67 8.09 999 11.52WBMG 9/9/2010 17:00:00 19.74 8.11 998 11.42WBMG 9/9/2010 18:00:00 19.68 8.1 997 11.05WBMG 9/9/2010 19:00:00 19.45 8.04 997 10.12WBMG 9/9/2010 20:00:00 19.2 7.98 997 9.25

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/9/2010 21:00:00 19 7.92 998 8.36WBMG 9/9/2010 22:00:00 18.8 7.88 997 7.8WBMG 9/9/2010 23:00:00 18.65 7.86 999 7.45WBMG 9/10/2010 0:00:00 18.54 7.85 1002 7.29WBMG 9/10/2010 1:00:00 18.4 7.85 1004 7.19WBMG 9/10/2010 2:00:00 18.28 7.85 1007 7.15WBMG 9/10/2010 3:00:00 18.16 7.85 1008 7.13WBMG 9/10/2010 4:00:00 17.98 7.83 1009 7.11WBMG 9/10/2010 5:00:00 17.8 7.82 1011 7.1WBMG 9/10/2010 6:00:00 17.63 7.8 1013 7.05WBMG 9/10/2010 7:00:00 17.43 7.78 1014 7WBMG 9/10/2010 8:00:00 17.28 7.77 1010 7.03WBMG 9/10/2010 9:00:00 17.29 7.77 1020 7.34WBMG 9/10/2010 10:00:00 17.4 7.8 1022 7.83WBMG 9/10/2010 11:00:00 17.68 7.85 1027 8.71WBMG 9/10/2010 12:00:00 18.16 7.94 1027 9.78WBMG 9/10/2010 13:00:00 18.83 8.02 1021 10.69WBMG 9/10/2010 14:00:00 19.73 8.09 1028 11.43WBMG 9/10/2010 15:00:00 20.42 8.14 1028 11.88WBMG 9/10/2010 16:00:00 20.81 8.18 1030 12.13WBMG 9/10/2010 17:00:00 21.04 8.17 1029 11.88WBMG 9/10/2010 18:00:00 20.91 8.15 1027 11.37WBMG 9/10/2010 19:00:00 20.53 8.07 1028 10.3WBMG 9/10/2010 20:00:00 20.13 7.97 1030 9.05WBMG 9/10/2010 21:00:00 19.92 7.91 1031 8.1WBMG 9/10/2010 22:00:00 19.87 7.85 1033 7.43WBMG 9/10/2010 23:00:00 19.88 7.83 1034 7.12WBMG 9/11/2010 0:00:00 19.92 7.83 1036 6.92WBMG 9/11/2010 1:00:00 19.97 7.83 1038 6.75WBMG 9/11/2010 2:00:00 19.96 7.82 1043 6.7WBMG 9/11/2010 3:00:00 19.93 7.82 1044 6.58WBMG 9/11/2010 4:00:00 19.91 7.81 1039 6.54WBMG 9/11/2010 5:00:00 19.83 7.79 1043 6.44WBMG 9/11/2010 6:00:00 19.73 7.77 1043 6.4WBMG 9/11/2010 7:00:00 19.57 7.75 1044 6.27WBMG 9/11/2010 8:00:00 19.39 7.73 1044 6.27WBMG 9/11/2010 9:00:00 19.27 7.72 1043 6.33WBMG 9/11/2010 10:00:00 19.15 7.73 1043 6.64WBMG 9/11/2010 11:00:00 19.03 7.74 1040 6.95WBMG 9/11/2010 12:00:00 19.03 7.75 1043 7.41WBMG 9/11/2010 13:00:00 19.19 7.78 1044 8.14WBMG 9/11/2010 14:00:00 19.41 7.84 1045 8.99WBMG 9/11/2010 15:00:00 19.88 7.91 1041 9.97WBMG 9/11/2010 16:00:00 20.35 7.98 1046 10.66

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/11/2010 17:00:00 20.8 8.02 1051 11.09WBMG 9/11/2010 18:00:00 20.83 8.04 1044 10.96WBMG 9/11/2010 19:00:00 20.41 7.98 1041 9.76WBMG 9/11/2010 20:00:00 19.92 7.88 1038 8.58WBMG 9/11/2010 21:00:00 19.56 7.81 1035 7.68WBMG 9/11/2010 22:00:00 19.36 7.78 1035 7.24WBMG 9/11/2010 23:00:00 19.21 7.77 1033 6.99WBMG 9/12/2010 0:00:00 19.06 7.77 1028 6.87WBMG 9/12/2010 1:00:00 18.94 7.78 1025 6.85WBMG 9/12/2010 2:00:00 18.82 7.79 1023 6.86WBMG 9/12/2010 3:00:00 18.66 7.78 1022 6.88WBMG 9/12/2010 4:00:00 18.5 7.77 1025 6.84WBMG 9/12/2010 5:00:00 18.31 7.77 1026 6.82WBMG 9/12/2010 6:00:00 18.09 7.74 1028 6.83WBMG 9/12/2010 7:00:00 17.83 7.73 1030 6.82WBMG 9/12/2010 8:00:00 17.62 7.72 1032 6.96WBMG 9/12/2010 9:00:00 17.59 7.74 1036 7.39WBMG 9/12/2010 10:00:00 17.72 7.76 1037 7.88WBMG 9/12/2010 11:00:00 18.15 7.83 1036 8.81WBMG 9/12/2010 12:00:00 18.77 7.91 1035 9.89WBMG 9/12/2010 13:00:00 19.42 7.98 1029 10.73WBMG 9/12/2010 14:00:00 20.24 8.04 1022 11.45WBMG 9/12/2010 15:00:00 20.85 8.1 1018 11.87WBMG 9/12/2010 16:00:00 21.36 8.12 1015 12.02WBMG 9/12/2010 17:00:00 21.56 8.12 1015 11.69WBMG 9/12/2010 18:00:00 21.44 8.09 1010 11WBMG 9/12/2010 19:00:00 21.11 8.03 1008 9.91WBMG 9/12/2010 20:00:00 20.79 7.93 1006 8.68WBMG 9/12/2010 21:00:00 20.62 7.86 1005 7.77WBMG 9/12/2010 22:00:00 20.57 7.82 1005 7.24WBMG 9/12/2010 23:00:00 20.59 7.8 1004 6.95WBMG 9/13/2010 0:00:00 20.61 7.79 1004 6.72WBMG 9/13/2010 1:00:00 20.61 7.79 1006 6.58WBMG 9/13/2010 2:00:00 20.57 7.78 1007 6.51WBMG 9/13/2010 3:00:00 20.53 7.77 1010 6.4WBMG 9/13/2010 4:00:00 20.4 7.76 1010 6.37WBMG 9/13/2010 5:00:00 20.21 7.74 1010 6.28WBMG 9/13/2010 6:00:00 20.02 7.71 1010 6.22WBMG 9/13/2010 7:00:00 19.8 7.7 1009 6.18WBMG 9/13/2010 8:00:00 19.6 7.69 1005 6.22WBMG 9/13/2010 9:00:00 19.56 7.69 1005 6.59WBMG 9/13/2010 10:00:00 19.65 7.7 1007 6.97WBMG 9/13/2010 11:00:00 19.88 7.75 1008 7.93WBMG 9/13/2010 12:00:00 20.45 7.83 1008 9.11

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/13/2010 13:00:00 21.02 7.94 1010 10.28WBMG 9/13/2010 14:00:00 21.8 8.02 1010 11.12WBMG 9/13/2010 15:00:00 22.44 8.07 1010 11.67WBMG 9/13/2010 16:00:00 22.94 8.12 1012 12.01WBMG 9/13/2010 17:00:00 23.17 8.12 1010 11.85WBMG 9/13/2010 18:00:00 22.95 8.1 1008 11.07WBMG 9/13/2010 19:00:00 22.54 8.02 1004 9.87WBMG 9/13/2010 20:00:00 22.03 7.91 1000 8.53WBMG 9/13/2010 21:00:00 21.62 7.83 1003 7.45WBMG 9/13/2010 22:00:00 21.37 7.79 999 6.88WBMG 9/13/2010 23:00:00 21.25 7.77 1003 6.59WBMG 9/14/2010 0:00:00 21.13 7.77 1005 6.43WBMG 9/14/2010 1:00:00 21.02 7.77 1006 6.35WBMG 9/14/2010 2:00:00 20.91 7.77 1010 6.32WBMG 9/14/2010 3:00:00 20.75 7.77 1013 6.27WBMG 9/14/2010 4:00:00 20.52 7.76 1005 6.21WBMG 9/14/2010 5:00:00 20.27 7.75 1013 6.15WBMG 9/14/2010 6:00:00 19.98 7.73 1014 6.23WBMG 9/14/2010 7:00:00 19.66 7.72 1018 6.14WBMG 9/14/2010 8:00:00 19.39 7.71 1015 6.24WBMG 9/14/2010 9:00:00 19.27 7.72 1016 6.56WBMG 9/14/2010 10:00:00 19.35 7.72 1023 7.07WBMG 9/14/2010 11:00:00 19.53 7.77 1018 8.01WBMG 9/14/2010 12:00:00 19.94 7.86 1021 9.12WBMG 9/14/2010 13:00:00 20.64 7.96 1024 10.29WBMG 9/14/2010 14:00:00 21.37 8.04 1021 11.2WBMG 9/14/2010 15:00:00 21.83 8.1 1024 11.76WBMG 9/14/2010 16:00:00 22.37 8.13 1027 12.07WBMG 9/14/2010 17:00:00 22.69 8.15 1028 11.86WBMG 9/14/2010 18:00:00 22.59 8.12 1020 11.27WBMG 9/14/2010 19:00:00 22.13 8.07 1011 10.22WBMG 9/14/2010 20:00:00 21.62 7.96 1016 8.88WBMG 9/14/2010 21:00:00 21.17 7.87 1014 7.81WBMG 9/14/2010 22:00:00 20.85 7.82 1004 7.12WBMG 9/14/2010 23:00:00 20.65 7.79 1006 6.71WBMG 9/15/2010 0:00:00 20.49 7.79 1010 6.5WBMG 9/15/2010 1:00:00 20.36 7.79 1024 6.41WBMG 9/15/2010 2:00:00 20.23 7.8 1027 6.34WBMG 9/15/2010 3:00:00 20.11 7.8 1029 6.31WBMG 9/15/2010 4:00:00 19.96 7.79 1030 6.26WBMG 9/15/2010 5:00:00 19.77 7.78 1029 6.3WBMG 9/15/2010 6:00:00 19.58 7.78 1030 6.26WBMG 9/15/2010 7:00:00 19.37 7.76 1031 6.22WBMG 9/15/2010 8:00:00 19.19 7.75 1032 6.23

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/15/2010 9:00:00 19.12 7.76 1031 6.64WBMG 9/15/2010 10:00:00 19.17 7.8 1033 7.4WBMG 9/15/2010 11:00:00 19.3 7.85 1035 8.4WBMG 9/15/2010 12:00:00 19.61 7.95 1036 9.55WBMG 9/15/2010 13:00:00 19.99 8.05 1036 10.67WBMG 9/15/2010 14:00:00 20.36 8.13 1038 11.6WBMG 9/15/2010 15:00:00 20.75 8.19 1039 12.13WBMG 9/15/2010 16:00:00 20.95 8.22 1043 12.41WBMG 9/15/2010 17:00:00 21.06 8.23 1047 12.32WBMG 9/15/2010 18:00:00 21.03 8.21 1046 11.75WBMG 9/15/2010 19:00:00 20.84 8.14 1046 10.81WBMG 9/15/2010 20:00:00 20.59 8.04 1048 9.62WBMG 9/15/2010 21:00:00 20.38 7.96 1046 8.45WBMG 9/15/2010 22:00:00 20.26 7.88 1047 7.58WBMG 9/15/2010 23:00:00 20.23 7.85 1046 7.17WBMG 9/16/2010 0:00:00 20.25 7.83 1043 6.83WBMG 9/16/2010 1:00:00 20.3 7.83 1042 6.67WBMG 9/16/2010 2:00:00 20.35 7.82 1043 6.56WBMG 9/16/2010 3:00:00 20.39 7.82 1045 6.46WBMG 9/16/2010 4:00:00 20.39 7.81 1047 6.33WBMG 9/16/2010 5:00:00 20.39 7.8 1049 6.27WBMG 9/16/2010 6:00:00 20.33 7.78 1050 6.15WBMG 9/16/2010 7:00:00 20.29 7.77 1048 6.14WBMG 9/16/2010 8:00:00 20.22 7.75 1049 6.06WBMG 9/16/2010 9:00:00 20.18 7.73 1048 6.16WBMG 9/16/2010 10:00:00 20.18 7.74 1048 6.66WBMG 9/16/2010 11:00:00 20.28 7.76 1047 7.51WBMG 9/16/2010 12:00:00 20.32 7.82 1045 8.42WBMG 9/16/2010 13:00:00 20.43 7.86 1045 9.12WBMG 9/16/2010 14:00:00 20.6 7.9 1040 9.98WBMG 9/16/2010 15:00:00 20.87 7.96 1046 10.95WBMG 9/16/2010 16:00:00 21.03 8 1048 11.46WBMG 9/16/2010 17:00:00 21.09 8.03 1048 11.66WBMG 9/16/2010 18:00:00 20.83 7.99 1049 11.03WBMG 9/16/2010 19:00:00 20.48 7.86 1050 9.82WBMG 9/16/2010 20:00:00 20.17 7.74 1051 8.69WBMG 9/16/2010 21:00:00 19.89 7.64 1050 7.69WBMG 9/16/2010 22:00:00 19.66 7.58 1049 7.1WBMG 9/16/2010 23:00:00 19.48 7.53 1049 6.81WBMG 9/17/2010 0:00:00 19.29 7.51 1049 6.7WBMG 9/17/2010 1:00:00 19.15 7.5 1052 6.64WBMG 9/17/2010 2:00:00 18.98 7.47 1057 6.62WBMG 9/17/2010 3:00:00 18.75 7.47 1062 6.63WBMG 9/17/2010 4:00:00 18.47 7.46 1064 6.63

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/17/2010 5:00:00 18.22 7.63 1065 6.69WBMG 9/17/2010 6:00:00 17.96 7.61 1068 6.52WBMG 9/17/2010 7:00:00 17.72 7.57 1068 6.51WBMG 9/17/2010 8:00:00 17.5 7.54 1069 6.58WBMG 9/17/2010 9:00:00 17.48 7.53 1069 6.97WBMG 9/17/2010 10:00:00 17.62 7.54 1070 7.59WBMG 9/17/2010 11:00:00 17.91 7.59 1068 8.64WBMG 9/17/2010 12:00:00 18.3 7.95 1068 9.69WBMG 9/17/2010 13:00:00 18.97 8.05 1068 10.72WBMG 9/17/2010 14:00:00 19.64 8.13 1070 11.61WBMG 9/17/2010 15:00:00 20.37 8.2 1071 12.3WBMG 9/17/2010 16:00:00 20.9 8.27 1071 12.63WBMG 9/17/2010 17:00:00 21.25 8.27 1071 12.51WBMG 9/17/2010 18:00:00 21.23 8.24 1071 11.86WBMG 9/17/2010 19:00:00 20.88 8.18 1071 10.85WBMG 9/17/2010 20:00:00 20.43 8.07 1070 9.62WBMG 9/17/2010 21:00:00 20.04 7.97 1067 8.47WBMG 9/17/2010 22:00:00 19.76 7.9 1064 7.66WBMG 9/17/2010 23:00:00 19.59 7.86 1062 7.19WBMG 9/18/2010 0:00:00 19.49 7.85 1062 6.97WBMG 9/18/2010 1:00:00 19.45 7.84 1063 6.8WBMG 9/18/2010 2:00:00 19.44 7.85 1064 6.71WBMG 9/18/2010 3:00:00 19.44 7.85 1066 6.63WBMG 9/18/2010 4:00:00 19.43 7.84 1068 6.59WBMG 9/18/2010 5:00:00 19.37 7.84 1070 6.53WBMG 9/18/2010 6:00:00 19.31 7.83 1071 6.49WBMG 9/18/2010 7:00:00 19.25 7.82 1070 6.4WBMG 9/18/2010 8:00:00 19.19 7.81 1068 6.34WBMG 9/18/2010 9:00:00 19.16 7.8 1067 6.54WBMG 9/18/2010 10:00:00 19.17 7.81 1068 7WBMG 9/18/2010 11:00:00 19.09 7.84 1062 7.49WBMG 9/18/2010 12:00:00 19.03 7.84 1058 7.52WBMG 9/18/2010 13:00:00 19.08 7.84 1056 7.86WBMG 9/18/2010 14:00:00 19.22 7.89 1062 8.66WBMG 9/18/2010 15:00:00 19.3 7.96 1061 9.46WBMG 9/18/2010 16:00:00 19.28 7.98 1061 9.64WBMG 9/18/2010 17:00:00 19.2 7.97 1068 9.56WBMG 9/18/2010 18:00:00 19.05 7.94 1078 9.2WBMG 9/18/2010 19:00:00 18.9 7.9 1074 8.6WBMG 9/18/2010 20:00:00 18.74 7.84 1069 7.92WBMG 9/18/2010 21:00:00 18.6 7.81 1065 7.42WBMG 9/18/2010 22:00:00 18.45 7.78 1061 7.13WBMG 9/18/2010 23:00:00 18.37 7.77 1060 7.04WBMG 9/19/2010 0:00:00 18.29 7.77 1056 7

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/19/2010 1:00:00 18.19 7.78 1051 7.02WBMG 9/19/2010 2:00:00 18.1 7.78 1043 7WBMG 9/19/2010 3:00:00 18.02 7.79 1033 7.03WBMG 9/19/2010 4:00:00 17.92 7.78 1025 7WBMG 9/19/2010 5:00:00 17.82 7.76 1023 7.03WBMG 9/19/2010 6:00:00 17.65 7.75 1024 7.04WBMG 9/19/2010 7:00:00 17.49 7.75 1027 7.06WBMG 9/19/2010 8:00:00 17.37 7.74 1029 7.13WBMG 9/19/2010 9:00:00 17.39 7.76 1032 7.5WBMG 9/19/2010 10:00:00 17.49 7.79 1031 8.09WBMG 9/19/2010 11:00:00 17.86 7.86 1026 9.05WBMG 9/19/2010 12:00:00 18.32 7.95 1019 9.99WBMG 9/19/2010 13:00:00 18.79 8.02 1010 10.82WBMG 9/19/2010 14:00:00 19 8.07 1001 11.18WBMG 9/19/2010 15:00:00 19.08 8.1 997 11.37WBMG 9/19/2010 16:00:00 19.09 8.09 993 11.14WBMG 9/19/2010 17:00:00 19.1 8.08 987 10.84WBMG 9/19/2010 18:00:00 18.96 8.04 982 10.3WBMG 9/19/2010 19:00:00 18.77 7.99 977 9.58WBMG 9/19/2010 20:00:00 18.63 7.93 968 8.81WBMG 9/19/2010 21:00:00 18.49 7.88 958 8.12WBMG 9/19/2010 22:00:00 18.42 7.85 952 7.74WBMG 9/19/2010 23:00:00 18.36 7.83 949 7.48WBMG 9/20/2010 0:00:00 18.3 7.82 947 7.36WBMG 9/20/2010 1:00:00 18.27 7.82 949 7.26WBMG 9/20/2010 2:00:00 18.26 7.82 949 7.18WBMG 9/20/2010 3:00:00 18.21 7.81 949 7.12WBMG 9/20/2010 4:00:00 18.16 7.79 950 7.06WBMG 9/20/2010 5:00:00 18.09 7.78 949 7.05WBMG 9/20/2010 6:00:00 18.03 7.76 950 6.96WBMG 9/20/2010 7:00:00 17.96 7.75 949 6.92WBMG 9/20/2010 8:00:00 17.9 7.74 949 6.86WBMG 9/20/2010 9:00:00 17.89 7.73 947 7.02WBMG 9/20/2010 10:00:00 18.02 7.77 950 7.71WBMG 9/20/2010 11:00:00 18.31 7.85 951 8.84WBMG 9/20/2010 12:00:00 18.73 7.93 957 9.84WBMG 9/20/2010 13:00:00 19.14 8.01 985 10.55WBMG 9/20/2010 14:00:00 19.3 8.07 1006 10.79WBMG 9/20/2010 15:00:00 19.46 8.07 1012 10.76WBMG 9/20/2010 16:00:00 19.56 8.07 1017 10.59WBMG 9/20/2010 17:00:00 19.84 8.06 1014 10.48WBMG 9/20/2010 18:00:00 20.08 8.09 1010 10.63WBMG 9/20/2010 19:00:00 20 8.05 1010 9.97WBMG 9/20/2010 20:00:00 19.85 7.96 1011 8.91

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/20/2010 21:00:00 19.77 7.9 1010 8.07WBMG 9/20/2010 22:00:00 19.75 7.85 1008 7.56WBMG 9/20/2010 23:00:00 19.78 7.83 1007 7.19WBMG 9/21/2010 0:00:00 19.79 7.81 1010 7.01WBMG 9/21/2010 1:00:00 19.79 7.81 1013 6.9WBMG 9/21/2010 2:00:00 19.78 7.8 1013 6.81WBMG 9/21/2010 3:00:00 19.75 7.8 1015 6.72WBMG 9/21/2010 4:00:00 19.7 7.79 1017 6.72WBMG 9/21/2010 5:00:00 19.63 7.78 1018 6.67WBMG 9/21/2010 6:00:00 19.56 7.78 1017 6.64WBMG 9/21/2010 7:00:00 19.49 7.76 1017 6.57WBMG 9/21/2010 8:00:00 19.43 7.75 1018 6.58WBMG 9/21/2010 9:00:00 19.51 7.76 1023 6.85WBMG 9/21/2010 10:00:00 19.76 7.81 1023 7.7WBMG 9/21/2010 11:00:00 20.11 7.87 1023 8.57WBMG 9/21/2010 12:00:00 20.55 7.95 1026 9.55WBMG 9/21/2010 13:00:00 21.37 8.04 1028 10.56WBMG 9/21/2010 14:00:00 21.98 8.12 1030 11.34WBMG 9/21/2010 15:00:00 22.54 8.18 1027 11.84WBMG 9/21/2010 16:00:00 22.9 8.22 1027 12.07WBMG 9/21/2010 17:00:00 23.1 8.21 1026 11.76WBMG 9/21/2010 18:00:00 23.02 8.15 1024 10.97WBMG 9/21/2010 19:00:00 22.77 8.07 1030 9.69WBMG 9/21/2010 20:00:00 22.45 7.95 1027 8.24WBMG 9/21/2010 21:00:00 22.21 7.86 1028 7.25WBMG 9/21/2010 22:00:00 22.09 7.81 1033 6.64WBMG 9/21/2010 23:00:00 22.06 7.79 1032 6.31WBMG 9/22/2010 0:00:00 22.07 7.79 1027 6.13WBMG 9/22/2010 1:00:00 22.06 7.78 1027 6.02WBMG 9/22/2010 2:00:00 21.99 7.8 1030 5.94WBMG 9/22/2010 3:00:00 21.88 7.79 1031 5.9WBMG 9/22/2010 4:00:00 21.72 7.79 1030 5.86WBMG 9/22/2010 5:00:00 21.59 7.78 1027 5.85WBMG 9/22/2010 6:00:00 21.41 7.76 1025 5.81WBMG 9/22/2010 7:00:00 21.22 7.73 1024 5.78WBMG 9/22/2010 8:00:00 21.04 7.71 1023 5.77WBMG 9/22/2010 9:00:00 20.98 7.71 1021 5.97WBMG 9/22/2010 10:00:00 20.92 7.72 1016 6.33WBMG 9/22/2010 11:00:00 20.88 7.72 1012 6.63WBMG 9/22/2010 12:00:00 20.92 7.75 1011 7.12WBMG 9/22/2010 13:00:00 21.03 7.8 1007 8.05WBMG 9/22/2010 14:00:00 21.22 7.88 1004 9.12WBMG 9/22/2010 15:00:00 21.45 7.94 1001 9.73WBMG 9/22/2010 16:00:00 21.61 7.97 997 10.08

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/22/2010 17:00:00 21.73 8 994 10.16WBMG 9/22/2010 18:00:00 21.73 7.98 994 9.77WBMG 9/22/2010 19:00:00 21.55 7.93 993 9.05WBMG 9/22/2010 20:00:00 21.33 7.87 992 8.1WBMG 9/22/2010 21:00:00 21.16 7.81 992 7.43WBMG 9/22/2010 22:00:00 21.02 7.77 992 6.96WBMG 9/22/2010 23:00:00 20.92 7.76 993 6.72WBMG 9/23/2010 0:00:00 20.87 7.75 991 6.62WBMG 9/23/2010 1:00:00 20.82 7.75 990 6.54WBMG 9/23/2010 2:00:00 20.76 7.74 991 6.47WBMG 9/23/2010 3:00:00 20.66 7.73 993 6.43WBMG 9/23/2010 4:00:00 20.58 7.73 992 6.35WBMG 9/23/2010 5:00:00 20.5 7.72 993 6.34WBMG 9/23/2010 6:00:00 20.38 7.7 994 6.3WBMG 9/23/2010 7:00:00 20.25 7.7 996 6.27WBMG 9/23/2010 8:00:00 20.19 7.69 997 6.27WBMG 9/23/2010 9:00:00 20.24 7.7 998 6.55WBMG 9/23/2010 10:00:00 20.42 7.73 999 7.18WBMG 9/23/2010 11:00:00 20.71 7.78 1000 7.94WBMG 9/23/2010 12:00:00 21.17 7.84 1002 9.03WBMG 9/23/2010 13:00:00 22.05 7.95 1001 10.21WBMG 9/23/2010 14:00:00 22.46 8.02 1001 10.74WBMG 9/23/2010 15:00:00 23.03 8.07 1000 11.3WBMG 9/23/2010 16:00:00 23.28 8.15 998 11.46WBMG 9/23/2010 17:00:00 23.46 8.16 993 11.16WBMG 9/23/2010 18:00:00 23.31 8.1 991 10.51WBMG 9/23/2010 19:00:00 23 8.02 989 9.31WBMG 9/23/2010 20:00:00 22.72 7.91 987 8.13WBMG 9/23/2010 21:00:00 22.56 7.83 983 7.23WBMG 9/23/2010 22:00:00 22.49 7.79 980 6.67WBMG 9/23/2010 23:00:00 22.42 7.77 979 6.4WBMG 9/24/2010 0:00:00 22.39 7.75 980 6.23WBMG 9/24/2010 1:00:00 22.33 7.75 981 6.1WBMG 9/24/2010 2:00:00 22.29 7.76 983 6.03WBMG 9/24/2010 3:00:00 22.22 7.76 988 5.99WBMG 9/24/2010 4:00:00 22.16 7.75 991 5.98WBMG 9/24/2010 5:00:00 22.04 7.75 981 6.05WBMG 9/24/2010 6:00:00 21.9 7.75 981 6.16WBMG 9/24/2010 7:00:00 21.75 7.72 980 6.02WBMG 9/24/2010 8:00:00 21.61 7.67 969 5.89WBMG 9/24/2010 9:00:00 21.36 7.64 980 5.86WBMG 9/24/2010 10:00:00 21.04 7.61 993 6.01WBMG 9/24/2010 11:00:00 20.71 7.62 998 6.52WBMG 9/24/2010 12:00:00 20.51 7.63 990 7.03

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/24/2010 13:00:00 20.57 7.66 986 7.87WBMG 9/24/2010 14:00:00 20.92 7.72 972 8.88WBMG 9/24/2010 15:00:00 21.33 7.8 984 9.73WBMG 9/24/2010 16:00:00 21.81 7.88 985 10.49WBMG 9/24/2010 17:00:00 21.77 7.89 990 10.47WBMG 9/24/2010 18:00:00 21.38 7.86 993 9.93WBMG 9/24/2010 19:00:00 20.72 7.76 993 8.82WBMG 9/24/2010 20:00:00 20.17 7.67 989 7.8WBMG 9/24/2010 21:00:00 19.82 7.59 982 7.15WBMG 9/24/2010 22:00:00 19.58 7.54 974 6.84WBMG 9/24/2010 23:00:00 19.43 7.53 970 6.71WBMG 9/25/2010 0:00:00 19.26 7.53 969 6.67WBMG 9/25/2010 1:00:00 19.11 7.53 971 6.7WBMG 9/25/2010 2:00:00 18.93 7.52 970 6.71WBMG 9/25/2010 3:00:00 18.69 7.5 967 6.77WBMG 9/25/2010 4:00:00 18.39 7.48 968 6.74WBMG 9/25/2010 5:00:00 18.06 7.45 972 6.78WBMG 9/25/2010 6:00:00 17.75 7.41 975 6.8WBMG 9/25/2010 7:00:00 17.5 7.37 975 6.83WBMG 9/25/2010 8:00:00 17.23 7.33 977 6.9WBMG 9/25/2010 9:00:00 17.09 7.33 977 7.22WBMG 9/25/2010 10:00:00 17.13 7.35 975 7.73WBMG 9/25/2010 11:00:00 17.31 7.4 969 8.5WBMG 9/25/2010 12:00:00 17.67 7.47 967 9.37WBMG 9/25/2010 13:00:00 17.97 7.54 965 10.11WBMG 9/25/2010 14:00:00 18.18 7.62 962 10.77WBMG 9/25/2010 15:00:00 18.1 7.64 958 10.75WBMG 9/25/2010 16:00:00 17.96 7.64 953 10.51WBMG 9/25/2010 17:00:00 17.8 7.61 936 10.16WBMG 9/25/2010 18:00:00 17.61 7.56 957 9.68WBMG 9/25/2010 19:00:00 17.32 7.51 955 9.04WBMG 9/25/2010 20:00:00 17.11 7.47 954 8.6WBMG 9/25/2010 21:00:00 16.94 7.43 954 8.12WBMG 9/25/2010 22:00:00 16.84 7.41 952 7.83WBMG 9/25/2010 23:00:00 16.77 7.39 950 7.67WBMG 9/26/2010 0:00:00 16.68 7.38 950 7.6WBMG 9/26/2010 1:00:00 16.58 7.38 952 7.52WBMG 9/26/2010 2:00:00 16.46 7.38 956 7.47WBMG 9/26/2010 3:00:00 16.34 7.36 958 7.5WBMG 9/26/2010 4:00:00 16.21 7.35 961 7.49WBMG 9/26/2010 5:00:00 16.1 7.33 966 7.47WBMG 9/26/2010 6:00:00 15.97 7.35 970 7.42WBMG 9/26/2010 7:00:00 15.84 7.33 974 7.4WBMG 9/26/2010 8:00:00 15.73 7.3 975 7.36

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/26/2010 9:00:00 15.72 7.29 978 7.6WBMG 9/26/2010 10:00:00 15.82 7.31 981 8.15WBMG 9/26/2010 11:00:00 15.89 7.35 982 8.89WBMG 9/26/2010 12:00:00 16.11 7.4 981 9.49WBMG 9/26/2010 13:00:00 16.43 7.47 980 10.33WBMG 9/26/2010 14:00:00 16.76 7.55 982 10.89WBMG 9/26/2010 15:00:00 16.99 7.61 982 11.4WBMG 9/26/2010 16:00:00 16.99 7.63 980 11.6WBMG 9/26/2010 17:00:00 16.87 7.64 977 11.55WBMG 9/26/2010 18:00:00 16.64 7.6 978 10.98WBMG 9/26/2010 19:00:00 16.35 7.54 977 10.36WBMG 9/26/2010 20:00:00 16.05 7.48 975 9.65WBMG 9/26/2010 21:00:00 15.74 7.42 972 8.95WBMG 9/26/2010 22:00:00 15.51 7.38 970 8.53WBMG 9/26/2010 23:00:00 15.29 7.34 968 8.28WBMG 9/27/2010 0:00:00 15.18 7.33 967 8.11WBMG 9/27/2010 1:00:00 15.16 7.32 948 8.05WBMG 9/27/2010 2:00:00 15.14 7.32 968 7.99WBMG 9/27/2010 3:00:00 15.11 7.32 972 7.95WBMG 9/27/2010 4:00:00 15.07 7.34 976 7.91WBMG 9/27/2010 5:00:00 15.01 7.32 979 7.91WBMG 9/27/2010 6:00:00 14.92 7.32 983 7.9WBMG 9/27/2010 7:00:00 14.8 7.29 986 7.84WBMG 9/27/2010 8:00:00 14.7 7.26 989 7.79WBMG 9/27/2010 9:00:00 14.64 7.25 992 7.93WBMG 9/27/2010 10:00:00 14.7 7.27 992 8.27WBMG 9/27/2010 11:00:00 14.9 7.31 992 8.97WBMG 9/27/2010 12:00:00 15.28 7.38 995 9.79WBMG 9/27/2010 13:00:00 15.72 7.43 997 10.31WBMG 9/27/2010 14:00:00 16.37 7.53 999 10.99WBMG 9/27/2010 15:00:00 16.87 7.6 1001 11.56WBMG 9/27/2010 16:00:00 16.96 7.61 1005 11.46WBMG 9/27/2010 17:00:00 17.25 7.66 1005 11.6WBMG 9/27/2010 18:00:00 17.28 7.67 1001 11.38WBMG 9/27/2010 19:00:00 16.99 7.63 999 10.85WBMG 9/27/2010 20:00:00 16.49 7.52 999 9.66WBMG 9/27/2010 21:00:00 16.16 7.53 997 8.83WBMG 9/27/2010 22:00:00 16.03 7.49 993 8.34WBMG 9/27/2010 23:00:00 15.96 7.45 992 8.05WBMG 9/28/2010 0:00:00 15.86 7.42 993 7.85WBMG 9/28/2010 1:00:00 15.79 7.4 996 7.74WBMG 9/28/2010 2:00:00 15.74 7.45 1000 7.68WBMG 9/28/2010 3:00:00 15.69 7.44 1003 7.68WBMG 9/28/2010 4:00:00 15.64 7.42 1007 7.62

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/28/2010 5:00:00 15.55 7.41 1010 7.58WBMG 9/28/2010 6:00:00 15.45 7.38 1011 7.55WBMG 9/28/2010 7:00:00 15.29 7.35 1011 7.52WBMG 9/28/2010 8:00:00 15.14 7.33 1012 7.49WBMG 9/28/2010 9:00:00 15.14 7.31 1013 7.65WBMG 9/28/2010 10:00:00 15.27 7.32 1014 8.09WBMG 9/28/2010 11:00:00 15.56 7.36 1013 8.81WBMG 9/28/2010 12:00:00 15.85 7.42 1015 9.57WBMG 9/28/2010 13:00:00 16.35 7.46 1016 10.05WBMG 9/28/2010 14:00:00 17.17 7.56 1017 10.93WBMG 9/28/2010 15:00:00 17.82 7.62 1018 11.2WBMG 9/28/2010 16:00:00 18.29 7.67 1024 11.46WBMG 9/28/2010 17:00:00 18.74 7.72 1009 11.64WBMG 9/28/2010 18:00:00 18.67 7.72 1023 11.43WBMG 9/28/2010 19:00:00 18.27 7.66 1018 10.69WBMG 9/28/2010 20:00:00 17.72 7.56 1018 9.5WBMG 9/28/2010 21:00:00 17.3 7.47 1019 8.64WBMG 9/28/2010 22:00:00 17.03 7.42 1017 7.99WBMG 9/28/2010 23:00:00 16.92 7.39 1014 7.67WBMG 9/29/2010 0:00:00 16.83 7.38 1016 7.46WBMG 9/29/2010 1:00:00 16.77 7.37 1020 7.35WBMG 9/29/2010 2:00:00 16.7 7.36 1024 7.25WBMG 9/29/2010 3:00:00 16.61 7.36 1025 7.21WBMG 9/29/2010 4:00:00 16.54 7.35 1027 7.18WBMG 9/29/2010 5:00:00 16.48 7.34 1029 7.17WBMG 9/29/2010 6:00:00 16.43 7.32 1031 7.09WBMG 9/29/2010 7:00:00 16.35 7.3 1032 7.08WBMG 9/29/2010 8:00:00 16.18 7.26 1030 7.04WBMG 9/29/2010 9:00:00 16.1 7.25 1029 7.2WBMG 9/29/2010 10:00:00 16.2 7.26 1031 7.61WBMG 9/29/2010 11:00:00 16.4 7.3 1029 8.24WBMG 9/29/2010 12:00:00 16.68 7.35 1029 8.77WBMG 9/29/2010 13:00:00 17.34 7.43 1030 9.75WBMG 9/29/2010 14:00:00 17.95 7.5 1034 10.29WBMG 9/29/2010 15:00:00 18.87 7.63 1035 11.25WBMG 9/29/2010 16:00:00 19.39 7.69 1037 11.45WBMG 9/29/2010 17:00:00 19.84 7.75 1039 11.81WBMG 9/29/2010 18:00:00 19.99 7.79 1038 11.8WBMG 9/29/2010 19:00:00 19.49 7.72 1037 10.66WBMG 9/29/2010 20:00:00 18.95 7.63 1036 9.49WBMG 9/29/2010 21:00:00 18.49 7.52 1035 8.48WBMG 9/29/2010 22:00:00 18.2 7.45 1033 7.82WBMG 9/29/2010 23:00:00 18 7.41 1032 7.4WBMG 9/30/2010 0:00:00 17.91 7.39 1031 7.25

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 9/30/2010 1:00:00 17.88 7.38 1030 7.14WBMG 9/30/2010 2:00:00 17.93 7.39 1036 7.08WBMG 9/30/2010 3:00:00 17.99 7.39 1039 6.98WBMG 9/30/2010 4:00:00 17.99 7.4 1040 6.91WBMG 9/30/2010 5:00:00 17.9 7.39 1042 6.91WBMG 9/30/2010 6:00:00 17.74 7.37 1044 6.82WBMG 9/30/2010 7:00:00 17.55 7.35 1046 6.8WBMG 9/30/2010 8:00:00 17.36 7.32 1044 6.75WBMG 9/30/2010 9:00:00 17.27 7.32 1046 6.87WBMG 9/30/2010 10:00:00 17.31 7.32 1049 7.11WBMG 9/30/2010 11:00:00 17.47 7.35 1048 7.74WBMG 9/30/2010 12:00:00 17.66 7.39 1048 8.33WBMG 9/30/2010 13:00:00 18.2 7.46 1049 9.16WBMG 9/30/2010 14:00:00 19.02 7.56 1052 10.01WBMG 12/3/2010 10:00:00 1.61 7.79 822 12.79WBMG 12/3/2010 11:00:00 1.87 7.89 825 13.22WBMG 12/3/2010 12:00:00 2.24 8 828 13.72WBMG 12/3/2010 13:00:00 2.58 8.08 829 14.02WBMG 12/3/2010 14:00:00 2.79 8.15 832 14.32WBMG 12/3/2010 15:00:00 2.85 8.2 832 14.42WBMG 12/3/2010 16:00:00 2.73 8.2 835 14.32WBMG 12/3/2010 17:00:00 2.52 8.18 834 13.9WBMG 12/3/2010 18:00:00 2.31 8.15 831 13.46WBMG 12/3/2010 19:00:00 2.24 8.12 831 13.14WBMG 12/3/2010 20:00:00 2.25 8.11 832 12.99WBMG 12/3/2010 21:00:00 2.38 8.13 834 13.01WBMG 12/3/2010 22:00:00 2.45 8.15 832 13.05WBMG 12/3/2010 23:00:00 2.55 8.16 835 13.01WBMG 12/4/2010 0:00:00 2.63 8.16 840 12.93WBMG 12/4/2010 1:00:00 2.51 8.15 840 12.81WBMG 12/4/2010 2:00:00 2.33 8.16 843 12.74WBMG 12/4/2010 3:00:00 2.16 8.14 844 12.59WBMG 12/4/2010 4:00:00 2.18 8.13 849 12.5WBMG 12/4/2010 5:00:00 2.17 8.11 849 12.42WBMG 12/4/2010 6:00:00 1.98 8.11 854 12.38WBMG 12/4/2010 7:00:00 1.85 8.1 851 12.31WBMG 12/4/2010 8:00:00 1.75 8.08 850 12.28WBMG 12/4/2010 9:00:00 1.77 8.1 852 12.36WBMG 12/4/2010 10:00:00 1.94 8.12 853 12.62WBMG 12/4/2010 11:00:00 2.17 8.15 856 12.94WBMG 12/4/2010 12:00:00 2.38 8.18 857 13.28WBMG 12/4/2010 13:00:00 2.53 8.21 863 13.5WBMG 12/4/2010 14:00:00 2.69 8.24 892 13.69WBMG 12/4/2010 15:00:00 2.8 8.25 922 13.8

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 12/4/2010 16:00:00 2.77 8.24 938 13.74WBMG 12/4/2010 17:00:00 2.65 8.23 930 13.57WBMG 12/4/2010 18:00:00 2.5 8.18 919 13.1WBMG 12/4/2010 19:00:00 2.37 8.14 920 12.78WBMG 12/4/2010 20:00:00 2.25 8.12 917 12.59WBMG 12/4/2010 21:00:00 2.21 8.12 909 12.57WBMG 12/4/2010 22:00:00 2.24 8.12 905 12.58WBMG 12/4/2010 23:00:00 2.25 8.13 910 12.58WBMG 12/5/2010 0:00:00 2.14 8.13 925 12.61WBMG 12/5/2010 1:00:00 2.1 8.13 947 12.61WBMG 12/5/2010 2:00:00 2.06 8.13 966 12.59WBMG 12/5/2010 3:00:00 2.08 8.12 980 12.49WBMG 12/5/2010 4:00:00 2.1 8.1 995 12.39WBMG 12/5/2010 5:00:00 1.99 8.09 1000 12.35WBMG 12/5/2010 6:00:00 1.86 8.09 1004 12.29WBMG 12/5/2010 7:00:00 1.74 8.07 1009 12.27WBMG 12/5/2010 8:00:00 1.59 8.07 1020 12.25WBMG 12/5/2010 9:00:00 1.56 8.07 1035 12.31WBMG 12/5/2010 10:00:00 1.65 8.09 1050 12.51WBMG 12/5/2010 11:00:00 1.84 8.12 1066 12.93WBMG 12/5/2010 12:00:00 2.13 8.16 1083 13.34WBMG 12/5/2010 13:00:00 2.41 8.21 1091 13.71WBMG 12/5/2010 14:00:00 2.55 8.25 1093 13.97WBMG 12/5/2010 15:00:00 2.55 8.26 1103 14.07WBMG 12/5/2010 16:00:00 2.35 8.26 1103 14.1WBMG 12/5/2010 17:00:00 1.94 8.25 1101 13.87WBMG 12/5/2010 18:00:00 1.51 8.2 1100 13.54WBMG 12/5/2010 19:00:00 1.21 8.16 1099 13.14WBMG 12/5/2010 20:00:00 0.96 8.13 1095 12.99WBMG 12/5/2010 21:00:00 0.8 8.13 1091 12.94WBMG 12/5/2010 22:00:00 0.67 8.14 1088 13WBMG 12/5/2010 23:00:00 0.59 8.15 1088 13.05WBMG 12/6/2010 0:00:00 0.51 8.15 1090 13.1WBMG 12/6/2010 1:00:00 0.4 8.16 1094 13.14WBMG 12/6/2010 2:00:00 0.31 8.17 1102 13.17WBMG 12/6/2010 3:00:00 0.18 8.16 1112 13.15WBMG 12/6/2010 4:00:00 0.08 8.14 1120 13.09WBMG 12/6/2010 5:00:00 0 8.13 1124 13.05WBMG 12/6/2010 6:00:00 0 8.13 1127 13.05WBMG 12/6/2010 7:00:00 ‐0.01 8.11 1127 13.01WBMG 12/6/2010 8:00:00 0 8.1 1131 13.03WBMG 12/6/2010 9:00:00 0.05 8.1 1132 13.06WBMG 12/6/2010 10:00:00 0.14 8.1 1135 13.13WBMG 12/6/2010 11:00:00 0.23 8.12 1133 13.43

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 12/6/2010 12:00:00 0.37 8.16 1128 13.83WBMG 12/6/2010 13:00:00 0.41 8.21 1119 14.35WBMG 12/6/2010 14:00:00 0.47 8.28 1118 14.77WBMG 12/6/2010 15:00:00 0.76 8.3 1124 14.86WBMG 12/6/2010 16:00:00 0.82 8.29 1123 14.73WBMG 12/6/2010 17:00:00 0.64 8.25 1124 14.31WBMG 12/6/2010 18:00:00 0.43 8.2 1124 13.95WBMG 12/6/2010 19:00:00 0.29 8.17 1122 13.71WBMG 12/6/2010 20:00:00 0.23 8.16 1123 13.56WBMG 12/6/2010 21:00:00 0.16 8.15 1117 13.57WBMG 12/6/2010 22:00:00 0.08 8.16 1109 13.63WBMG 12/6/2010 23:00:00 0.04 8.18 1102 13.69WBMG 12/7/2010 0:00:00 0.04 8.18 1093 13.67WBMG 12/7/2010 1:00:00 0.08 8.18 1090 13.59WBMG 12/7/2010 2:00:00 0.11 8.17 1088 13.51WBMG 12/7/2010 3:00:00 0.11 8.16 1081 13.4WBMG 12/7/2010 4:00:00 0.07 8.14 1080 13.31WBMG 12/7/2010 5:00:00 0 8.13 1077 13.23WBMG 12/7/2010 6:00:00 ‐0.01 8.12 1075 13.23WBMG 12/7/2010 7:00:00 0 8.11 1076 13.2WBMG 12/7/2010 8:00:00 ‐0.01 8.1 1079 13.17WBMG 12/7/2010 9:00:00 0.02 8.1 1077 13.22WBMG 12/7/2010 10:00:00 0.09 8.1 1072 13.28WBMG 12/7/2010 11:00:00 0.22 8.11 1068 13.51WBMG 12/7/2010 12:00:00 0.31 8.14 1065 13.78WBMG 12/7/2010 13:00:00 0.38 8.17 1057 14.11WBMG 12/7/2010 14:00:00 0.38 8.22 1051 14.44WBMG 12/7/2010 15:00:00 0.56 8.26 1055 14.55WBMG 12/7/2010 16:00:00 0.69 8.26 1058 14.5WBMG 12/7/2010 17:00:00 0.56 8.24 1060 14.33WBMG 12/7/2010 18:00:00 0.3 8.2 1063 14.04WBMG 12/7/2010 19:00:00 0.12 8.17 1066 13.8WBMG 12/7/2010 20:00:00 0.03 8.15 1067 13.64WBMG 12/7/2010 21:00:00 ‐0.01 8.13 1066 13.6WBMG 12/7/2010 22:00:00 ‐0.01 8.13 1065 13.61WBMG 12/7/2010 23:00:00 ‐0.01 8.14 1063 13.71WBMG 12/8/2010 0:00:00 ‐0.01 8.15 1061 13.75WBMG 12/8/2010 1:00:00 ‐0.01 8.15 1061 13.74WBMG 12/8/2010 2:00:00 ‐0.02 8.16 1062 13.69WBMG 12/8/2010 3:00:00 ‐0.01 8.15 1065 13.63WBMG 12/8/2010 4:00:00 ‐0.02 8.14 1070 13.5WBMG 12/8/2010 5:00:00 ‐0.01 8.13 1073 13.43WBMG 12/8/2010 6:00:00 ‐0.01 8.12 1073 13.36WBMG 12/8/2010 7:00:00 ‐0.02 8.1 1075 13.29

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 12/8/2010 8:00:00 ‐0.01 8.1 1077 13.28WBMG 12/8/2010 9:00:00 0.01 8.09 1080 13.28WBMG 12/8/2010 10:00:00 0.07 8.09 1081 13.33WBMG 12/8/2010 11:00:00 0.19 8.09 1083 13.46WBMG 12/8/2010 12:00:00 0.3 8.11 1076 13.76WBMG 12/8/2010 13:00:00 0.31 8.15 1077 14.08WBMG 12/8/2010 14:00:00 0.27 8.2 1070 14.42WBMG 12/8/2010 15:00:00 0.31 8.24 1071 14.58WBMG 12/8/2010 16:00:00 0.41 8.24 1076 14.51WBMG 12/8/2010 17:00:00 0.39 8.23 1079 14.38WBMG 12/8/2010 18:00:00 0.23 8.2 1081 14.1WBMG 12/8/2010 19:00:00 0.12 8.16 1082 13.78WBMG 12/8/2010 20:00:00 0.06 8.13 1081 13.57WBMG 12/8/2010 21:00:00 0.03 8.12 1081 13.5WBMG 12/8/2010 22:00:00 ‐0.01 8.12 1076 13.56WBMG 12/8/2010 23:00:00 ‐0.01 8.13 1074 13.6WBMG 12/9/2010 0:00:00 ‐0.02 8.12 1073 13.58WBMG 12/9/2010 1:00:00 ‐0.02 8.12 1074 13.58WBMG 12/9/2010 2:00:00 ‐0.02 8.13 1075 13.56WBMG 12/9/2010 3:00:00 ‐0.02 8.11 1078 13.45WBMG 12/9/2010 4:00:00 ‐0.02 8.1 1078 13.41WBMG 12/9/2010 5:00:00 ‐0.02 8.09 1077 13.32WBMG 12/9/2010 6:00:00 ‐0.02 8.08 1076 13.26WBMG 12/9/2010 7:00:00 ‐0.02 8.07 1075 13.22WBMG 12/9/2010 8:00:00 ‐0.01 8.06 1074 13.19WBMG 12/9/2010 9:00:00 0.02 8.06 1074 13.16WBMG 12/9/2010 10:00:00 0.08 8.05 1071 13.26WBMG 12/9/2010 11:00:00 0.13 8.07 1070 13.47WBMG 12/9/2010 12:00:00 0.17 8.1 1065 13.79WBMG 12/9/2010 13:00:00 0.16 8.13 1061 14.19WBMG 12/9/2010 14:00:00 0.12 8.17 1058 14.46WBMG 12/9/2010 15:00:00 0.09 8.2 1059 14.59WBMG 12/9/2010 16:00:00 0.1 8.2 1060 14.52WBMG 12/9/2010 17:00:00 0.13 8.2 1062 14.33WBMG 12/9/2010 18:00:00 0.15 8.16 1067 13.99WBMG 12/9/2010 19:00:00 0.18 8.13 1067 13.62WBMG 12/9/2010 20:00:00 0.21 8.1 1068 13.38WBMG 12/9/2010 21:00:00 0.22 8.09 1066 13.34WBMG 12/9/2010 22:00:00 0.08 8.1 1063 13.36WBMG 12/9/2010 23:00:00 0.01 8.11 1057 13.4WBMG 12/10/2010 0:00:00 0 8.11 1055 13.4WBMG 12/10/2010 1:00:00 0.03 8.11 1056 13.36WBMG 12/10/2010 2:00:00 0.13 8.12 1056 13.28WBMG 12/10/2010 3:00:00 0.22 8.11 1060 13.16

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 12/10/2010 4:00:00 0.3 8.1 1060 13.01WBMG 12/10/2010 5:00:00 0.31 8.09 1058 12.91WBMG 12/10/2010 6:00:00 0.24 8.08 1058 12.9WBMG 12/10/2010 7:00:00 0.21 8.07 1056 12.84WBMG 12/10/2010 8:00:00 0.17 8.06 1055 12.79WBMG 12/10/2010 9:00:00 0.12 8.06 1052 12.82WBMG 12/10/2010 10:00:00 0.12 8.07 1050 12.94WBMG 12/10/2010 11:00:00 0.24 8.08 1048 13.14WBMG 12/10/2010 12:00:00 0.47 8.11 1045 13.45WBMG 12/10/2010 13:00:00 0.74 8.15 1045 13.73WBMG 12/10/2010 14:00:00 1.11 8.18 1051 13.99WBMG 12/10/2010 15:00:00 1.36 8.2 1057 14.06WBMG 12/10/2010 16:00:00 1.46 8.21 1064 14.01WBMG 12/10/2010 17:00:00 1.34 8.2 1070 13.82WBMG 12/10/2010 18:00:00 1.07 8.16 1071 13.49WBMG 12/10/2010 19:00:00 0.83 8.12 1069 13.12WBMG 12/10/2010 20:00:00 0.71 8.09 1066 12.9WBMG 12/10/2010 21:00:00 0.63 8.08 1063 12.81WBMG 12/10/2010 22:00:00 0.64 8.08 1060 12.8WBMG 12/10/2010 23:00:00 0.66 8.07 1061 12.8WBMG 12/11/2010 0:00:00 0.72 8.08 1058 12.8WBMG 12/11/2010 1:00:00 0.79 8.09 1057 12.82WBMG 12/11/2010 2:00:00 0.9 8.09 1057 12.76WBMG 12/11/2010 3:00:00 0.99 8.09 1058 12.69WBMG 12/11/2010 4:00:00 1.09 8.08 1056 12.63WBMG 12/11/2010 5:00:00 1.1 8.08 1060 12.59WBMG 12/11/2010 6:00:00 1.13 8.07 1065 12.49WBMG 12/11/2010 7:00:00 1.14 8.06 1067 12.41WBMG 12/11/2010 8:00:00 1.14 8.05 1065 12.36WBMG 12/11/2010 9:00:00 1.15 8.05 1061 12.34WBMG 12/11/2010 10:00:00 1.25 8.05 1059 12.43WBMG 12/11/2010 11:00:00 1.4 8.06 1056 12.65WBMG 12/11/2010 12:00:00 1.51 8.08 1053 12.94WBMG 12/11/2010 13:00:00 1.67 8.11 1052 13.17WBMG 12/11/2010 14:00:00 1.77 8.12 1054 13.3WBMG 12/11/2010 15:00:00 1.9 8.13 1053 13.3WBMG 12/11/2010 16:00:00 1.9 8.13 1051 13.2WBMG 12/11/2010 17:00:00 1.82 8.12 1047 12.95WBMG 12/11/2010 18:00:00 1.81 8.09 1147 12.62WBMG 12/11/2010 19:00:00 1.79 8.06 1193 12.36WBMG 12/11/2010 20:00:00 1.67 8.02 1231 12.13WBMG 12/11/2010 21:00:00 1.61 8.01 1294 12.11WBMG 12/11/2010 22:00:00 1.57 8.01 1278 12.15WBMG 12/11/2010 23:00:00 1.49 8.03 1255 12.2

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 12/12/2010 0:00:00 1.38 8.04 1224 12.27WBMG 12/12/2010 1:00:00 1.35 8.04 1205 12.26WBMG 12/12/2010 2:00:00 1.29 8.03 1197 12.19WBMG 12/12/2010 3:00:00 1.27 8.03 1193 12.14WBMG 12/12/2010 4:00:00 1.26 8.02 1209 12.09WBMG 12/12/2010 5:00:00 1.29 8 1240 11.99WBMG 12/12/2010 6:00:00 1.21 7.98 1243 11.93WBMG 12/12/2010 7:00:00 1.19 7.97 1228 11.84WBMG 12/12/2010 8:00:00 1.11 7.96 1226 11.81WBMG 12/12/2010 9:00:00 1.07 7.97 1245 11.88WBMG 12/12/2010 10:00:00 1.18 7.96 1263 11.97WBMG 12/12/2010 11:00:00 1.27 7.98 1327 12.15WBMG 12/12/2010 12:00:00 1.3 8 1350 12.36WBMG 12/12/2010 13:00:00 1.2 8.01 1328 12.49WBMG 12/12/2010 14:00:00 1.18 8.02 1291 12.47WBMG 12/12/2010 15:00:00 1.11 8.04 1260 12.53WBMG 12/12/2010 16:00:00 0.94 8.03 1228 12.54WBMG 12/12/2010 17:00:00 0.79 8 1204 12.51WBMG 12/12/2010 18:00:00 0.63 8.02 1203 12.54WBMG 12/12/2010 19:00:00 0.53 8.03 1195 12.56WBMG 12/12/2010 20:00:00 0.41 8.04 1195 12.64WBMG 12/12/2010 21:00:00 0.31 8.05 1202 12.68WBMG 12/12/2010 22:00:00 0.18 8.05 1220 12.7WBMG 12/12/2010 23:00:00 0.02 8.06 1246 12.7WBMG 12/13/2010 0:00:00 ‐0.08 8.06 1274 12.74WBMG 12/13/2010 1:00:00 ‐0.07 8.06 1300 12.82WBMG 12/13/2010 2:00:00 ‐0.06 8.05 1310 12.84WBMG 12/13/2010 3:00:00 ‐0.06 8.04 1320 12.85WBMG 12/13/2010 4:00:00 ‐0.06 8.04 1323 12.86WBMG 12/13/2010 5:00:00 ‐0.05 8.03 1323 12.88WBMG 12/13/2010 6:00:00 ‐0.05 8.03 1318 12.88WBMG 12/13/2010 7:00:00 ‐0.05 8.02 1312 12.86WBMG 12/13/2010 8:00:00 ‐0.04 8.01 1306 12.9WBMG 12/13/2010 9:00:00 ‐0.03 8.01 1302 12.92WBMG 12/13/2010 10:00:00 0 8.01 1298 13WBMG 12/13/2010 11:00:00 0.06 8.02 1296 13.1WBMG 12/13/2010 12:00:00 0.09 8.04 1291 13.25WBMG 12/13/2010 13:00:00 0.08 8.06 1279 13.5WBMG 12/13/2010 14:00:00 0.07 8.09 1269 13.64WBMG 12/13/2010 15:00:00 0.03 8.1 1267 13.74WBMG 12/13/2010 16:00:00 ‐0.02 8.12 1268 13.79WBMG 12/13/2010 17:00:00 ‐0.04 8.11 1274 13.72WBMG 12/13/2010 18:00:00 ‐0.04 8.09 1283 13.58WBMG 12/13/2010 19:00:00 ‐0.05 8.07 1296 13.49

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Date Time Temperature pHSpecific Conductance

Dissolved Oxygen

M/D/YYYY HH:MM:SS °C SU uS/cm mg/LStationWBMG 12/13/2010 20:00:00 ‐0.04 8.06 1298 13.47WBMG 12/13/2010 21:00:00 ‐0.05 8.06 1297 13.45WBMG 12/13/2010 22:00:00 ‐0.05 8.06 1291 13.49WBMG 12/13/2010 23:00:00 ‐0.04 8.06 1288 13.45WBMG 12/14/2010 0:00:00 ‐0.05 8.06 1281 13.38WBMG 12/14/2010 1:00:00 ‐0.05 8.05 1276 13.34WBMG 12/14/2010 2:00:00 ‐0.05 8.05 1273 13.3WBMG 12/14/2010 3:00:00 ‐0.04 8.05 1273 13.24WBMG 12/14/2010 4:00:00 ‐0.05 8.04 1271 13.19WBMG 12/14/2010 5:00:00 ‐0.05 8.04 1271 13.2WBMG 12/14/2010 6:00:00 ‐0.05 8.03 1271 13.19WBMG 12/14/2010 7:00:00 ‐0.04 8.03 1271 13.15WBMG 12/14/2010 8:00:00 ‐0.04 8.02 1272 13.16WBMG 12/14/2010 9:00:00 ‐0.03 8.02 1272 13.18WBMG 12/14/2010 10:00:00 ‐0.01 8.03 1271 13.21WBMG 12/14/2010 11:00:00 0.02 8.03 1266 13.32WBMG 12/14/2010 12:00:00 0.04 8.05 1259 13.48WBMG 12/14/2010 13:00:00 0.05 8.07 1247 13.7WBMG 12/14/2010 14:00:00 0.03 8.09 1234 13.87WBMG 12/14/2010 15:00:00 0.01 8.11 1228 13.96WBMG 12/14/2010 16:00:00 ‐0.03 8.12 1223 14WBMG 12/14/2010 17:00:00 ‐0.04 8.12 1224 13.95WBMG 12/14/2010 18:00:00 ‐0.04 8.1 1226 13.81WBMG 12/14/2010 19:00:00 ‐0.04 8.08 1225 13.66WBMG 12/14/2010 20:00:00 ‐0.04 8.07 1223 13.56WBMG 12/14/2010 21:00:00 ‐0.04 8.07 1218 13.55WBMG 12/14/2010 22:00:00 ‐0.04 8.07 1215 13.57WBMG 12/14/2010 23:00:00 ‐0.04 8.07 1213 13.58WBMG 12/15/2010 0:00:00 ‐0.04 8.07 1216 13.56WBMG 12/15/2010 1:00:00 ‐0.04 8.06 1220 13.45WBMG 12/15/2010 2:00:00 ‐0.04 8.05 1225 13.38WBMG 12/15/2010 3:00:00 ‐0.04 8.04 1231 13.32WBMG 12/15/2010 4:00:00 ‐0.04 8.03 1236 13.23WBMG 12/15/2010 5:00:00 ‐0.04 8.02 1242 13.23WBMG 12/15/2010 6:00:00 ‐0.04 8.01 1245 13.19WBMG 12/15/2010 7:00:00 ‐0.04 8 1247 13.16WBMG 12/15/2010 8:00:00 ‐0.04 8 1247 13.15WBMG 12/15/2010 9:00:00 ‐0.03 8 1248 13.13WBMG 12/15/2010 10:00:00 0 8 1247 13.18WBMG 12/15/2010 11:00:00 0.03 8.01 1242 13.33WBMG 12/15/2010 12:00:00 0.05 8.02 1235 13.54WBMG 12/15/2010 13:00:00 0.04 8.04 1226 13.76WBMG 12/15/2010 14:00:00 0.04 8.06 1219 13.92

West Branch DuPage River McDowell Grove Forest Preserve Page 83 of 83

Year 7 - Section DAnnual Facility Inspection Report - Section DYear 8 of NPDES Permit No. ILR400502 DuPage County, 2nd Notice of Intent (Year 2)

BMP A.1: Distribution of Paper MaterialYear 3 Develop water quality information to fit the needs of the Stormwater Management Program. Update stream maintenance program

brochure. Create County fact sheet and produce quarterly issues of Currents. Continue to update and review water quality information as necessary.

BMP A.2: Speaking EngagementYear 3 Continue support of County funded groups. Encourage staff participation in speaking engagement opportunities.

BMP A.3: Public Service AnnouncementYear 3 Continue to update and air County public service announcements.

BMP A.4: Community EventYear 3 Continue community events, review and update materials and events as needed.

BMP A.5: Classroom Education MaterialYear 3 Continue the development of education materials, and sponsorship of environmental clubs. Review and update classroom education

materials as necessary.

BMP A.6: Other Public EducationYear 3 Continue to review and update public education information.

Tuesday, May 31, 2011 Page 1 of 6

BMP B.1: Public PanelYear 3 Review and update public panel information.

BMP B.3: Stakeholder MeetingYear 3 Continue support of the Municipal Engineers and Water Quality Stakeholders Groups.

BMP B.4: Public HearingYear 3 Continue to implement updates and review all amendments to appendices of the Stormwater Management Plan. Hold Public

hearings as necessary for any ordinance change, watershed plan, or variance.

BMP B.5: Volunteer MonitoringYear 3 Continue support for volunteer monitoring opportunities.

BMP B.6: Program CoordinationYear 3 Review and update programs as necessary.

BMP B.7: Other Public InvolvementYear 3 Continue support for programs while also reviewing potential public involvement programs and their feasibility.

BMP C.1: Storm Sewer Map PreparationYear 3 Incorporate new outfall and storm sewer information into the GIS database.

�Field inspectors will continue to verify the locations and attribute information of the outfalls within the GIS database.

Tuesday, May 31, 2011 Page 2 of 6

BMP C.2: Regulatory Control ProgramYear 3 Review the effectiveness of the program by evaluating how well the cooperating permit holders have communicated and exchanged

information. Review the IDDE ordinance and make any changes deemed necessary.

BMP C.3: Detection/Elimination Prioritization PlanYear 3 Priority outfalls will continue to be monitored.

BMP C.4: Illicit Discharge Tracing ProceduresYear 3 Continue tracing any illicit discharges detected. Make recommendations as to which tracing methods have proven to be the most

effective.

BMP C.5: Illicit Source Removal ProceduresYear 3 Continue tracing any illicit discharges detected. Review the outcome of the illicit discharges that were detected the previous year.

Enforce the removal of illicit discharges.

BMP C.6: Program Evaluation and AssessmentYear 3 Review year one of the IDDE program and report the results to the Stormwater Management Committee.

BMP C.7: Visual Dry Weather ScreeningYear 3 Continue to dry weather screen throughout the year.

BMP C.8: Pollutant Field TestingYear 3 Continue to test for pollutants during the dry weather survey. Review the results of the pollutant field tests and make

recommendations as to what chemicals seem to pose the greatest threat within DuPage County.

Tuesday, May 31, 2011 Page 3 of 6

BMP D.1: Regulatory Control ProgramYear 3 DuPage County will continue to update the Stormwater Ordinance on a regular basis in order to keep up local and national

regulations while implementing appropriate best management practices to lower quantities of pollutants from ending up in out waterways and drinking water. The County would also like to increase education and training for staff and municipalities in order to promote consistent and effective regulations throughout the County.

BMP D.2: Erosion and Sediment Control BMPsYear 3 Ensure staff has professional ability and appropriate certifications (when necessary) to review and inspect the guidelines of the BMP

Manual. Continue to educate staff on the evolving regulations by offering and attending training programs and seminars.

BMP D.4: Site Plan and Review ProceduresYear 3 DuPage County will offer staff training opportunities where they will be able to review and learn new methods of their evolving fields.

BMP D.5: Public Information Handling ProceduresYear 3 Implementation of an interactive informational Kiosk for public usage. Continue to field public concerns about proposed

developments and implement their concerns in the Stormwater Permit review of the proposed development. Continue to update County website with on-going activities and policies.

BMP D.6: Site Inspection/Enforcement ProceduresYear 3 Ensure staff has proper qualifications to conduct site inspections with respect to sediment and erosion control. Continue to offer

employee training on site inspections. Issue laptop computers to more staff members to ensure developed sites have obtained the proper permits to ensure the site is in compliance with the Stormwater Ordinance.

BMP E.2: Regulatory Control ProgramYear 3 DuPage County will offer staff training opportunities where they will be able to review and learn new methods of their evolving fields.

Tuesday, May 31, 2011 Page 4 of 6

BMP E.3: Long Term O&M ProceduresYear 3 Continue to enforce the Stormwater Ordinance.

BMP E.4: Pre-construction Review of BMP DesignsYear 3 DuPage County will offer staff training opportunities to municipalities and consultants in the review and design of permanent BMPs.

Continue to enforce the new Stormwater Ordinance provisions.

BMP E.5: Site Inspections During ConstructionYear 3 Continue to conduct regular site inspections during construction. Conduct staff training on recognizing inappropriate discharge from

a construction site.

BMP E.6: Post Construction InspectionsYear 3 Continue to offer employee training on site inspections.

BMP F.1: Employee Training ProgramYear 3 Continue organizing training sessions, develop procedures and decide appropriate personnel to attend. Notify appropriate personnel

of training sessions as well as posting information in other visible locations such as the County intranet site and facilities’ bulletin boards.

BMP F.2: Inspection and Maintenance ProgramYear 3 Public Works Drainage Division will implement a long-term routine preventative maintenance program to maintain and inspect the

Unincorporated MS4 systems based on the prioritization analysis and schedule from the previous year. Develop spill prevention and control plans for municipal facilities to prevent the release of hazardous materials from entering the storm sewer system. County facilities will submit record keeping of pollution prevention and good housekeeping activities for annual reporting. Continue Stream Maintenance program.

Tuesday, May 31, 2011 Page 5 of 6

BMP F.4: Municipal Operations and Waste DisposalYear 3 Complete the construction of a vactor waste receiving dump station at the Woodridge Greene Valley Waste Water Treatment Facility

to treat suspended solids and collect the leachate from the waste by-products to prevent the polluted runoff from going into the streams pending any engineering limitations and delays. The silt and the dried suspended solids from the dump station will be transported to a landfill. County facilities will submit record keeping of pollution prevention and good housekeeping activities for annual reporting.

BMP F.5: Flood Management/Assess GuidelinesYear 3 Adoption of the Spring Brook No. 1 Watershed Plan. Adoption of the St. Joseph Creek Watershed Plan. Adoption of the Best

Management Practices Guidance Manual along with the ordinance revisions that are associated with this document. Review and revise, as needed, Appendix F and other related appendices. Complete Phase II of the River Dumoulin Project. Construct the Marion Hills/75th Street Basin Project. Complete the installation of the Country Lakes Golf Course storm inlet to the new storm sewer system. Implement the recommendations in the Springbrook Creek Watershed Plan. Execute contract that will provide for vegetative maintenance and enhancements at many of the County’s existing flood control facilities. Construct the Busse Woods Dam Modifications Project. Construct the other NOAA projects. Construct the Huffman Street project in the Steeple Run Watershed. Randomly audit non-waiver, partial-waiver and complete waiver communities again in DuPage County for compliance with Appendix F. Salt Creek mainstem and its tributaries including Ginger, Sugar, Oak Brook Tributary, Bronswood Cemetary Tributary, Westwood Creek and Spring Brook. Steeple Run Tributary. Sawmill Creek Tributary. Kress Creek Tributary. Spring Brook No. 1 Tributary. Armitage Creek Tributary. Corrected and updated DFIRM maps will be approved and adopted by FEMA.

Tuesday, May 31, 2011 Page 6 of 6

Annual Facility Inspection Report - Section E

Year 8 of NPDES Permit No. ILR400502 DuPage County, 2nd Notice of Intent (Year 2) The 40 cooperating permit holders listed in the cover letter rely on established DuPage County programs to satisfy some of their General NPDES Permit No. ILR40 obligations for the six minimum control measures; Public Education and Outreach, Public Participation/Involvement, Illicit Discharge Detection and Elimination, Construction Site Runoff Control, Post-Construction Runoff Control, and Pollution Prevention/Good Housekeeping.

Annual Facility Inspection Report - Section F

Year 8 of NPDES Permit No. ILR400502 DuPage County, 2nd Notice of Intent (Year 2) A list of construction projects greater than one acre of disturbed area that DuPage County has paid for within the reporting period is included below. Location/Project Name Category Start Date-

End Date 1875 Arthur Drive, West Chicago. Construction of the DuPage County Sheriff’s Tactical Facility Impound Lot and installation of wetland detention basin.

Division of Facilities Management

11/15/10 -11/30/11

75th Street, from Olympus Drive to Oxford Lane, Naperville. Widening to three lanes in each direction, bridge reconstruction, and pedestrian tunnel construction. Note: The City of Naperville is the lead agency on this project.

City of Naperville and Division of Transportation

1/31/09-6/30/11

Belmont Road, Downers Grove. Grade separation along Metra’s Burlington Northern Santa Fe (BNSF) line. Construction of a new underpass along Belmont Road, as well as new pump station.

Division of Transportation

11/1/08-3/21/13

Stearns Road, from the Kane County line to James “Pate” Philip State Park, Bartlett. Roadway widening from two lanes to four lanes and realignment with a new intersection at Route 25/Dunham Road in Kane County.

Division of Transportation

8/13/09-7/1/11