•

•

•

4.1 RECLAMATION PLAN - INTRODPCTION

Reclamation activities at th mine site, conveyor route and

load-out facilities are, and will continue to be, directed

towards minimizing the overall impacts of coal mining activities

on the environment. It is recognized, however, that land

management policies and dist land reclamation technology

can, and probably will, change the life of the Skyline Mines

Project. In view of this, reclamation of the mine site

will satisfy the standards cur ent at the time of reclamation and

will be conducted using the mos applicable current technology.

AS now proposed, the mine site will be

wildlife/grazing habitat at the conclusion

operation. The conveyor route land load-out will I

postmining grazing landuse. The premining

postmining uses are identical fraIl areas.

returned to a

of the mining

be returned to a

and proposed

It is not intended that all of the disturbed areas be returned to

their original contours or onfigurations. These areas, as

addressed in Section 4.6 - TOPSOIL AND SUBSOIL HANDLING PLAN and

Section 4.7 - REVEGETATION are currently being stabilized

and revegetated and consist pr"marily of those steep slopes where

return to original configura ion is impractical. The stream

diversions, other than those in the portal area, will also be

left in their present chann Is. (See Section 4.19 STREAM

DIVERSIONS)

The initial step in the fina reclamation plan is to seal all

large diameter openings. This will be accomplished by

backfilling these openings noncombustible material. The

seals will be designed such th t mine drainage, if any, will not

enter surface water bodies. or a more detai led description of

the sealing of openings see ection 4.9 - OPENING AND SEALING

PLANS.

4-1

•

•

•

The next step in reclamation

structures and equipment .

solid waste generated in

collected and removed from the

information concerning this

presented in subsection 3.

Construction, Modification,

Backfilling of the subterranea

depressions will be the

backfilling is completed, the

returned to a surface channel

graded and recontoured. A

reclamation phase is found

STAB ILl ZATION, COMPACTION,

subsection 4.19.5

be the removal of all surface

this has been accomplished, all

abandonment operation will be

being reclaimed. Additional

of the reclamation plan is

Components of Operation

Maintenance and Removal.

portion of the silos, holes and

reclamation activity. Once the

tream in the portal area will be

and the disturbed areas will be

detai led description of this

Section 4.4 BACKFILL, SOIL

ONTOURING AND GRADING and in

of Diversions and Channels

Portal Area. As approved in t e original application, these new

stream channels will be on fill material with erosion protection

as described .

As soon as the grading and re ontouring operation is completed,

the ground at the sites will b _:s_C?arified to a m~ni~um depth of 6

inches so as to reduce compact·on and allow better soil retention "-, ...•. -.-."

and vegetation establishment. Following completion of scarifying

procedures, topsoil will be u iformly spread over the disturbed

areas in such a manner as to avoid excessive compaction of the

topsoil. The topsoil will be tested to determine if

fertilization and/or neutraliz tion is required. (Section 4.6 -

TOPSOIL AND SUBSOIL HANDLING PL N)

The disturbed areas will then e revegetated. Upon completion of

the soil testing and necessary fertilization or

neutralization, a seed re sui table for achieving the

objectives of the postmining 1 nduse plan will be spread over the

disturbed areas. The methods sed for revegetation are discussed

in Section 4.7 - REVEGETATION PAN .

4-2

•

The proposed timetable for t • reclamation plan activiti.s is

presented in section 4.2 - REC TION TIMETABLE.

Once the revegetation proced res are completed, a monitoring program will be established to ensure that an acceptable vegetational cover is establ shed. If during the monitoring program erosion develops in revegetated areas, regrading and reseeding " will be conducted n the affected areas. When the disturbed areas are stabilized by revegetation and surface runoff is demonstrated to meet water uality standards without detention time, the drainage ditches and sedimentation pond will be backfilled and revegetated.

That portion of the project a ea used for the new state highway (SR-264), and for which the tah Department of Transportation (UDOT) now has jurisdiction, will not be reclaimed. UDOT jurisdiction also includes slo es attendant to the highway.

No impoundments, sedimentation ponds or treatment facilities will remain upon abandonment. Dive sions and culverts which may remain will be renovated to the appr ved design specification prior to abandonment of the area.

4-3

'.'C";! l 0 19.94

~-~~~7 J ')J l

--_:.:.~ ',< ,-.. J L:~1i

4.1.1 Reclamation Plan - Rock Disposal Site

Reclamation activities will be conducted on portions of the affected areas as twenty foot lifts are filled to design

capacity. The final contours of the rock disposal site are presented in Drawing 4.16.1-1 B. Part of diversion

ditch DD-16 will be removed during final reclamation as needed. Diversion ditch UD-6 will remain after final

reclamation. Part of the disturbed are affected by the disposal operation will, at the request of the property

owner's representative, be leveled off and reclaimed to native rangeland for subsequent use as a corral. The

access road to the site will not be reclaimed except for the removal of the guard rail (Exhibit 4.1.1-1).

4.1.2 Reclamation Plan - Winter Quarters Ventilation Facility

Reclamation activities will include removing any existing structures such as the fan structure, retaining walls, a

mobile field office for emergency evacuation, substation with associated pad, fencing, etc. Compliant to both

State Regulations R645-301-551 and MSHA 30 CFR 1711, both the vent shaft and emergency escape shaft

will be sealed and backfilled with an engineered fill. The shafts will be backfilled above the pad surface with the

excess fill allowed to settle for approximately one year prior to removing the pad (See Section 4.9 for

details)closed with a six-inch thick concrete cap or other equivalent means and vented with a two-inch diameter

or larger pipe extending a minimum of 15-feet above the surface of the shaft(s). Consistent with the same

regulations, the slope will be sealed with solid, substantial, incombustible material such as concrete blocks,

bricks or tile, or shall be completely filled with incombustible material for a distance of at least 25-feet into the

opening. Once all structures are removed and openings sealed, the slopes will be reclaimed to the

approximate original contours (AOC) using extreme surface roughening (pocking) as the primary form of

sediment control. The site will be reseeded as outlined in Section 4.7 of the M&RP, and the sediment pond

removed. In the event the extreme surface roughening shows signs of failure, additional work will be

conducted to insure sediment is controlled on site. Improvements that were made to the preexisting Winter

Quarters Canyon road while the WQVF was operational will remain intact for the landowner as outlined in the

easement of the lease.

4.1.3 Reclamation Plan - North of Graben (NOG) Bleeder Shaft

Reclamation activities will include removing any structures such as the fan structure, diesel engine, fuel tanks,

etc. Compliant to both State Regulations R645-301-551 and MSHA 30 CFR 1711, the shaft will be backfilled

with an engineered fill. The shaft will be backfilled above the pad surface with excess fill, allowed to settle for

approximately one year prior to removing the pad (See Section 4.9 for details), closed with a six-inch concrete

cap or other equivalent means and vented with a two-inch diameter or larger pipe extending a minimum of 15-

feet above the surface of the shaft. Once all structures are removed and the shaft sealed, the slopes will be

reclaimed to the approximately original contour (AOC) using extreme surface roughening as the primary form of

sediment control. The site will be reseeded as outlined in Section 4.7 of the M&RP. In the event of re­

vegetation not achieving reclamation standards, additional work will be conducted to insure sediment control on

the site.

Revised: 9-18-2015 INCORPORATED4_3(a)

0CT 0 9 2015

Div. of Oil, Gas ~ roJiining

4.1.4 Reclamation Plan - Swens Canyon Ventilation Shaft

Reclamation activities will include removing any structures, such as electrical facilities, any mobile field

offices, emergency hoist structures, etc. Compliant to both State Regulations R645-301-551 and MSHA

30 CFR 1711, the shaft(s) will be completely backfilled with an engineered fill. Assuming the shaft(s)

were originally drilled using the blind-bore method, the cuttings stored in the cuttings pond area will be

used to backfill the shaft(s). If the raised-bore method was used, the fill will need to be shipped to the

site. The shaft will be backfilled above the pad surface with excess fill, allowed to settle for approximately

one (1) year prior to removing the pad (See Section 4.9 and Figure 4.9-8 for details). Once all structures

are removed and the shaft sealed, the slopes will be reclaimed to the approximately original contour

(AOC) using extreme roughening as the primary form of sediment control. The small section of the USFS

road that was rerouted for the access to the pond will be re-established in its former location. Plates

4.4.2-4A and 4.4.2-48 illustrate the proposed final reclamation designs. The site will be reseeded as

outlined in Section 4.7 of the M&RP. In the event of revegetation not adhieving reclamation standards,

additional work will be conducted to insure sediment control on the site. '

Revised: 5-27-16 4-3(b)

INCORPORATED

JUL 1 9 ~U1t

Div. of Oil, Gas & Mining

•

\ •••

Mr. Vernal J. Mortensen Vice President Coastal States Energy Co. 411 West 7200 South Midvale, Utah 84047

Dear Mr. Mortensen:

XHIBIT 1

August 27, 1982

I understand your firm needs clarification on the future use of the "strip pit" area you have under lease from the Telonis estate, to use as a mine rock waste dump si te._

The land surrounding te" strip pi t II area will continue to be used for grazing in t e future and, as such, I would prefer the reclaimed dump s'te to be leveled off so it could be used for corrals and a livestock containment area if we so desire.

The improved road leadiing to the waste dump si te should not be reclaimed, since we ~ould need the road-to allow for easier access to the dump S'lite when working with livestock in the area. .. 0.

Thank you for your consideration in this matter.

~inc elYY~t ...--

:/,,,P ;tZ//J~ ;//Z I ,

- I. I

Ahgelo Georgedes, Administrator for the Telonis Estate

4-4

•

•

•

4.2 RECLAMATION TIMETABLE

A suitably permanent and diverse vegetative cover, as required by

R6l4-301-353, will be establis ed on all affected areas of land,

except areas of railroad rights of-way and travelled roadways.

Land reclamation will take

surface disturbance. Steep

recommended in Section 4.7

as soon

slopes will

REVEGETATION

as possible after

be revegetated as

PLAN. The "first

appropriate growing season" defined as the earliest possible

available growing season. Permittee interprets available

growing seasons to be the arable spring and fall intervals

during which revegetation att mpts have the optimum chance for

success. Areas occupied by facilities such as roads,

office buildings, shops, coal handling structures and conveyors

will not be reclaimed until co elusion of the mining operations.

The reclamation sequence is sho n on Table 4.2-1.

4-5

0 :c:

O

0 --0

G'> Dl (f)

Qo

;s: ;J0 :;i" co

TABLE 4.2-1

z '- (") c: .- 0

:D '1J

c.c 0 ,,~ :D

~ ~ m 0

Revised: 5-27-16

RECLAMATION TIMETABLE

- . .....

Page 4-6

•

•

The following pages hay been deleted from the text:

Pages 4i through 4-11

INCORPORATED

JUL 2 9 2010

Oiv. of Oil, Gas & Mining

Ref

Skyline Mine

D~smprJOI1

Administration BId 02 strudure's Demolition Cost

trudure's Vol. Demolished

RubbI,,"s WeiutJt {exdode steel}

'Truck's Capacity

HautiilQI!

filInSpof1.ation Cost Non Ste~ Truck

r.mspor1alion Cosl Non Sleej Drive

~posBl Cost Non 51!!!!

Steers VVeignt

Truck's capacity Haulage

rnnsoor1allon Cost Steel Truck.

Tr.:ms00l1ation Cost Steel Truck Drive

o..sposal Cost Sleel

)'.lbtota'

Eq,uipmenl 's O(SPOsaJ Cost Oismantllng Cost

EQuioment '5 Vol. Demolished

loadiog Cosls

TrarasportCos,ls Disposal Costs

StJotQt~l

Tool

o :;=:" o -Q G)

~ Rc ;; ::J

Pnnte<j7J6r.i!OU~, S-ec

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Malenair

/o!lxo<j_8ki ~

ClI't _

z () o :D "'U o :D

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DemoIitlOfl Costs Rewed June 2016

Mf'Dns Untr Untt Lelll}th Widtll H~ighc Dlamet~r Art'o Volume Weight Density Time Number Unit 5welf Quanlity Urn' COS!

R~f~rt'n(e Co<;t f ador Numb~r

i 02 41 18 13 0100 D. 1CF 71lOO1l (f 7!OO! CF 2:l400t

0 ) 1181 CY

::lySe""" PIIoe < ,3 ~ Be CV 375~

Z715<II

21154

Fde Name Copy of DEMO_20160705, Woruheet Name AdmlnlslraUonBkl02 Page 1 of 1

Skyline Mine Otmohtion Cosl.5 Revrsod June 2016

OUC/IW-Nt'r MC ft:lIa!5 Mf!CM Unir ""., t~ngth Wi dth Hf!igh ! Diemert:r ..:a , ,. ,~ Vot!Jm e We'9hr Ot"tlSl l~" Time NUmb,,! Umt Swell QuonClry Ufl/r e l l:,t

Rr; Ae/t.lenet! Con FoClOl

Number - - - .-Mine No 1 Transrer Tower 03 Orthll:l ~ no InlMorolll' lUs • Strudure's Oemoh(fQn Cost _Mal ...... BId [.0"", t 41 18130100 O: 'CF ,- t F ~ PlIO Sirudure"s Vol. Demolished Q,3 Y Rubb;o'$ Wd;tIt ,c=xduCkI ~!ed} Tnxt.',s CII XII ItO . Transpo}ta!ion Cost Non Sleel Truck T", ... "",oOion cc.I NO<! SIoi~ O!:i SOIl Cost Non Sleel CI 5efW:es C· _Prlce 4.33 IC'f ~ Y 8!1t5Q Sfe-c:rs:V. T ........ C Haulaoe Trarr.;portntlon Co:sl Stec=l Truck r.."., oIlon <;o,J Sktl TNd< On .. 0_<01 Cost 51",,! Ii. i J;:t-. *I!..~

Ii IEQuipment "s Disposal Cosl

0""""''''00 CO>! ~" !'.j Vot Ottmoil!rlOO

!.OIOIOOC~

r""" .... ""'" Cl: .. w~ \·':-t:!al

Cancrcto OomoflClOa Dl!tb;If.dJatj eM.! ........ CCIocro!o~W -Quote ' 3, y _~C ou CClnCtUe'r. Vot Ottr.lOli::Jl~ 1.3 88CY LO'4!nG Cl'Gt.:.

__ ~3CY 31 23 111 42 ,3OQ 10 Y 88CY , .. ,

fransporl31ion Co~1 12CY 18Tcn Truck 1/2 mi. md ... 3, 23 23 21) '0'4 ~ V 88 t v 253 OisPO$31 Costs 1Qn_ 5ke dIspoul 241,. r.zuu ..!'jl C 74.

i '- ;;v;.a;,)~

T~ ------ -- --~- - -------- - - --- ------ - --~

No1e Volume is ,n Cy

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Sk)lllneMine Demol~lon Cosls Revtsed Junt.'l 2016

Dl!!u:riplian Materiots Means Unit Oml lIm9 rh Width HeIght Diame!er ~/f!a Volume Wl!!ight Dl!nsity Time Number Unit S'well Quantity Umt COS"t

Rej: Rtlerence

~lImber COSl Far::lc f

Be 2 Drive House 04 Octdud.s.o'A.ftOlnl:lldorw;b 51","""" 0._ C ... C~IJ; BkI. uJUG ~_~llaI3005Q O.Jll 30 F 7556 ~NCtI.Ite'~ VIlLOc-rnor&:ihcd 113 .e31 <!y lituutMD'" \\~igr"!4 6ducJe il-etq. TnJek's C'oWl, _t:>oo n.maari.Uon ~t Nan S!l:.clTNd.. r~I1.S:PCJI1'IIo:n.Clllllt Non Slt'ol On. OI.'ilJOlali Cosa Non ~ecJ a,_ elY SoMca P!Ice U Y "', Y 1~

s.:ftlr", Vlcloht Tru~"::Cil

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OI>l>OW CO"liIllcl SWllOtal

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Skyltne Mme Demolition Costs ReVIsed June 2016

DeSCflptl()n M:.,r ,.. r:v,'·, ~\fenm IJnir Unit LemJU1 Widlh Height Diameter Area 'Volume Welghl Densiry Time Nl1mber Umf Swell QlJonnry Umt Co" R<f f/eJeren<1! Cost Faclor

Number

Be 3 Drive House 05 Clo<!u<i loO!O ,., .. trIM WOIIs ~ UI~~ De-~Ion Cc;$I --""''''- oz., 1813 D10CJ a 3 :F l c.oooG CI' 27600 :Sll\ll:tW'f!!'s\l~I.Qc.rooI.l1.ht:d 2001 CY ~"!I ~'" '~!r9ld'a :!.t(!~

Tn,Q', Cooa<i\Y H,I:I.rIDtJO

lransllOt1sllon Cosl Non Steel Trudl I "",lojlOOUlJan CQII "'on Slt<, 0. ..

DI!I.PCUI Cog,' '40" Sl\'ItI ~y·s._ COy s.......,Pdo .. ~,33 y 2001< e s.es, !tllr~V'~1 ruck's Cil

.,.uloq< Tr.l:t.l:podU,cu, CO~ ste-cl Trua. l'ranspOf1allon Cast Steel Truck DriV'l ,,_C<>>lS, .. , 'h.t1;tll)t.d

·EQuiOMl'nt '!' Ob.~ COj!

DlS_ Co<! ~q __ .. '<c"",,,O.""""hod

lOHinoco!U "f1JtSt#1Cd\~ De!Io,oI eo.l> Suhtot<li

COAa1I'I'cDeJ1)Cll'ItQ1 I ~-C~ CoMRle<"1 .. ~QuQ(e 1:1, ey ,II5CY 255Il

CotII:It'l." Vol OIQ"JOI;:'b.cd 1 .3 2': 0 ... ' l .... "'!LCO>! F,""Und L ..... ' 3 C'f l, 2l11J 42 ,.300 18 ... 24 0 '0\ ThI"~IIU,o"~1 '2CY • '0<\) DJ" .. Truck,/2 OIL me 31232320 1014 2115 :Y 24> CY 714: 0"' .... 0]0_ 0.,10_ 11!2 .' '8,14200 S.81 y ' Z .. C 2DOlt :5",~vh '

T ..... ~

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Sky1ioeMioe Otmoli1iQO Costs R~VISt'd June 201 B

.-f)~!'(IrpllCln M aft!'rlo f .. MeoM Unlr Unir ef'19 lh Wldlh H~H)1H Dlometer ~t'a 'Volume Wt' iqhf Ol!'nsily rime Number Unit Swelf Quonlity Um f [os r

lItl Ref erence Coo, Focfor

Number

Crusher Raw Coal 06 Gh1w:d .!Q.~ no Into:rior wa:ll StnJcture's Demolition Cost Bll. Laroe 2"1O,n'fOO O.3>cF - CF IIUiCICl CF 1(1200 s..trudu:ra't- Vot ~hod U WI Y Ru-.bbIo"$ '..~ ft1 (t~e 11 """,,,Co

H.au!o • Transoor1mion CDSt NOll Ste~ Truc..k traD.sQOl1atio., Cost NOl\ Stetl Drive

D Hl C4SlNQa~1 ""'" 433 Y un -<:Y '235 SI..r.y",,,1II

ruck's Capac;,y

""u T .... bor\ e Ml Su~d T1\Ic.k TfmP~~ C·=t $ted TI'1K.k 01"1\1'0 O~sal Cost $Ittl

'5:.: coL ~.

..... C." 0i5;m:u.19 CO>1 81ulllment 's Vol Demolished l.a:aa C .... 1 c.. .. C_=u ;)<.lb\ iJi

CotN::RleO.moI~ ca.;1 concmecl5"' -"""'* 13' Y 1l1li CY I~

CGnC'1IIUI':: Vot Otmoli)tled U I

lOOd>lg """ nr.i _ocs lcI!IIOO1 ~ c:r 31 1310421JOO 1$1 I. CY 23<

TlthSlW)tlat irln COS! 12 CY 10 T", o..mo TNeI< 1/2 .... mel • 3123 23 20 10H 2.~ I. CY 413 D;s eo ... On sMe dlsoosat 02 .,10 17 200 a y " c y t2 H 3'-Uh'D~l:~

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Skylinc Mine DemoUtioo Cosis Rellised June 2016

Oesctlp(;oo Moteriol5 M~onf t rnr Unit l (!n.} fh W,dth HI!H} h r Oiotnf'tt"1 A, ,,"o Volume Wt'lghr DeM.i1r Jimr Number Unit .swell Quonfl f} tI"a Co,H --

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SII\IdLlltJ'S O~ ChsJ ~"""IIII.Is Dl<l ,lMoo 024, 18130100 0.3 ~ Of 3000II CF :;~

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Tftlclrlc:._ ... "' .... TtlM~::lIlan Cost Siul lJ\loCi. Tl'ilnsportallon CosL Silfel TrucA Drive DesPQsal Co.1l Steel SUbtot;r,1

C-oocrele Demolition IPI...mont RerrJJ'iaJ 4- OH,,3 '/50!jIJ HI IfiY 25C> SY ~ SY "~,S

O~loOC:",' C4na!rt."s wl Dcmobh,,;J LOBeling Cost FronllN'ld L.oaderl CY 3123 , e 42.3110 U CV st Tr.aosPQr1alion Cosl Q_~,..gICo~b 01 .- So 4 TOO 1.35 '" 47 0fI .~

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Skyline Min~ DemoUtlon Cos1$ Rfllvised June 2016

Dt!scriprion MQ(~rials !Weans Unir UnO l.ength Wldeh Height D,arnet~,. ;Areo Volumll!! Weight !Jensity Time Number Unit Swell QU<Jntity UllIe Con Ite/. Referenc~ (os! FadOf

Number

Railcar Loadout 08 ONtla s.a .... no lMedot'llll4lb SWell':"!:"S [)crmoi'"rli(I,n CO,.\ 1Ml>acl.-= ""'. iAVO " a 13 GIgo 0.3 "_ CF 17100 Strua&Jrd'S' V.:.L IDcrnoI1s.hacl 0 3 131, CY ~~ WI3.~1 ~~t,~~

TN«> con& •• Ha~o:

T,." ..... C<»1 N<rn $".' Trutl "'Tlilnspat'"tb n Ceil N(ln s~~ om. tr.7pOU1 ~ Non iSal;cl' ; .... Sol\i<n ::.._p- 4.» y 1311 CY S6n s...,<lrs 1I.1t: lQ.tlt rtl.iO.~s caP3Qty

11".10 • Tt'C.n~tio" CO'~ sutt Trucj: T~3tion C6$., Sb!..-I TnJd: Cd""

Il!>..,.. ' ~$." -, ""~"Do""'''C<o'' O:rtngn1.llnuCO~l

,''''_,_', VeL C .... IlIbr<l DOd Cour Tnan~f.I'K\ C01il$ Ctrp.;mlil'Cg.5i~

"U~I':;'·;:':II

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Prinled7.1512016 F~e Nsma Copy oJ DEMO_20150705. \NDrk5tleet Name Raik;.srLoadoul08 Page 1 or1

Ret

Skyline Mine

D~H·ripri01J

Water Tanks Two 10 O~ . .II:l !iml..D.DI~IMOI' 'wdl

Structure's Demolition Cost

Sirudure's Vol Demolished

RUIlIlI*. "Jol!IftS!._>UIl!l) Trucl;'sCaDacity

~ul'Q. TlOmspoc1aUon Cost Ntlll Sleel Truck

Tr.an5pQf1~tion Cost Non Sleel Drive

Disposal Cost Non steel

SlffiS V~1

rucIl\C . ... "" 1-1.111_ T ..... oot101lon CAsI ~.I T<II<lI

rurt;ipotlllll:ln Co~ Steal l"lVCJI; Dri .... Dl1pa~cn~~cd

'obwt"

E~l2...ment 's O~~sal Cost O5milnUb] CO!.I Eq~I "\I"' O._ LJI_Cu>l. Tr3.n:DOf1Co~ Disposal CastS

~UO~G\~!

TOIOI

Size haul of lanks

Pnnled1 m12016

o :c:" o o G) tI> IJ)

Qe

:s: ::J S· ec

'­C r-

tD

.... ~ i

[MatenalS

I

~ Sl:ed SkI L.u&e

1....",.,.._Ins_ "'a. bid.

CIlySeMces

z (') o :0 '"'C o :0

~ m CI

Means

Reference

Number

024116' 13 0020

21810.= 102:1

ly_Prlce

DemoliUon Costs ReVISed June 2016

UmC Uml l engCh Width N~!g!ll Diameter Area lIo/ume Weight Density T,me N umber Unit Swell Quont;ry Unit ( cst

(osr Factor

02 ICf ,N _0 lQI

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File Name Copy ofOEMO_2D16070S, \Nor\shoet Name WaierTanksTwol0 Pago 1 of1

Skyline Mine

(He'! JD es<f!pr,on

Wump-Iiousell ID~d smc. no tnk:mr",,~.is

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IDemolition Cost

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ToIoI

Note Volume Is in CY

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Reference Number

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12CY (IGToo) o....p Truck IJ2 rn1. tM ,If"a;pos:at Itt241 18 17 "200

DelTlo:ition CDSls

lu"" (l'St

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File Nitflle Cop)! of OEMO_20160705, "NoBslleet Name PumpHouse11

[VoIum.- r"9nr lo,"",y 17im • Ji'umber IUfllt

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eng

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Page 1 of1

Sk.v1mfl Mine Oemolilian Costs Revised June 201 a

Dt"~cripC/on MoterIO/$ Mean$" rJnir U".t Len91h Width /-f~igh~ Ocametu Area Volume. W~jght Df"/uity rime Numbf?r Unrt Swell Quantjty Unit Cosr

ReI, Rl!jf"HmCe ["os.t Foctor

Number

Well House Three 12 IJ.tGud ~ OQ Lnlt.lio(~ ~W't! - O.emriijlQO.c,.c,!;1 ..... _ ..... ..-

<>Z~I1e !lOI'''' O~ I:F 2.00 CF :saoo SlNd"fG's; vol. D~Jnor~l'ued Q.l Cl' fWW.'ti WI:IiQlLf u:d!.id& ~I.§.t!l TI\I<k" C.,.d!y ><atbrJ" r""" ~Ifo" Co'" NOlI ~dl TtuQ nm~nCHIr.:"n Stt.fil~

OLi.pM.Il.I ~t Uon Sl~ ~ C. .. SeMce_ Ul 20 1IS/l Ist~l. 1'kQ1Il tuclt.·~C~

tl.uIo"" llOlfU,J3'G:!:tallm CC:1I Sled iNcA. rr'Ur\~~.tiCr'I CO:J1 Sloe! Tn.JdII Drt\lo ,[k;clM., Co" S'<fl

..J1x;..,:.l 4J'S .. ,

EqUlli'melJl '~~"Ca~

Olsmon1:tnn cu" Eou "V.t~""''''he<l LCI~t.ngCO't.j Tnm~CtJ~5

Disposal COS15

·'.1'J1,Jl TOIIII 4756

0 :cO z 0 ~ (') - C 0 0 r- :IJ G) "tl ~ CoD 0 CJ) :IJ Si?O I ~ ~ :S" m :s" a co

Prinled7M12016 FUa Name Copy of DEMO_201607Q5. Wor1tsheet Name WetlHou5eThree12 Page1of1

R.e/.

Sh.ylin0Mlne

De5C1iplion MaterlOls

Water Treatment Bid 13 o",""~",,ii;iiilcii'v.". ~LlIb'S DttnaI:t.iOh C~"

~"""""" .. Vbl. Ilo-Nli>I>'" .fl~I!I"!I: ~hl (eoxdudo ~farn TndSCDe2!t ~la'UI'?9" iltUMpo!!:!tM)n CQ.:l \ ~fon Ste:cI"T.w

'ranlOO(1Wo/\ Co." Non !i.u!iI!f O;iw, 1O§iO .... Co," IlOnSl«i Sll!Id'l~t'll

Tnd'sCoOlCly 1Wl.,... TI:an~poctAtIan C'Glt Slw TI'\I~ TllIIl!II(I!X1ilfloa QuI Sfe-II::I Trvd. Ort"o"C! O~~Io1J Ca~' SfiJ .,'-...iy.

Biolipma-nl ~ Oi!Spa~al Co~ D~Co",l e",,_." .. Vol Oe'1lOf!ll\od Iloadi!i9cOS15 TnnS.J'i'f1CGQ.b Oi.wo~CUtl;

__ BId.

50"""""

Means

Reference Numl;Jer

.116130100

ill'_krkcPl1cD

Unfr

Cost

Demolition Co::!ts Revis~ June 2016

lJnl~ ~ f;'m}th Width Height Diomeh!r IArea Volume IWeight (lkmirY I Time (Number IUnit ISweli tluontiry IUmt Cost f actor

O.3\!CF

0,31 = 13500

4,;l:1I1<:Y 1000 ~

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Skyhne Mn1e Demolittan Costs R~tcI.AIf1I1:20'e

Df'5uTpfmn Motenois Means Unit Umt ",ength Width tfelght D JOmetf"r A rl!U Vofume Weigh( DensIty Tlm~ Numb~r Umt Swt':/I Q uanriry Umt Cost

fir! Reler~nc.e Cost Factor

Number

Mise Stora2e BId 14 Oc.dud SQ~ flO kliC'flOI was.s S~1&1tn'S ~ c~

_ _ mLl/flO 1Ol. 41 1& 13010Cl 0,3 :;F &:/!.S Cf "Oi

struaJau.'.s Obn'dlloll Coli S!""_~ 2: 41 ,..,. , al102O 02 CF . 0 tOOlXl CF 21&0 SUUt:u.)~~.$ Vat. Ot""'IQii~WIi~{1 O. lUCY R ubl:l:e"s We(lhl c.:Jude 51'~ Tn.c>."s_ Hlilluma= TrlIM t~" C"" .... n Steel T...a l'2rfa.patI..Atian Cosi N-aon. Stell::! 0Ilw::

Dc:.potQ] Cost ~1\ Sled ::., selViCeS SOI\iCePrlal 433 JCY 70 C" 303 Stel!lr1~b,

Tn.d<.C_ HO~II~ TnllI!UXlfl4lllan CIJ5t Sled TIl.IO. T .. .,1>OtL011On CC-~ 51«1 TI\ICk D<ml 0Cr~ Cfosl,sIHI ~1 • ..tH.(:.·.'1 34IB

£Q~Z'nI ".5 clzlsaJ cast Dilmanlfl~ Cost :~m"s ..... al c('marMf'O

l •• dlnQ C",,-, fr:ansQOl1 Co.ttI ~OO!;IlIC(ls.u

Su,:;,ct;:',

CODa'ClIIt' Dl:lmou,)on D~CQ!.:t ~<I'- N~_~ 13,7 C It t'( 15811 .... ot')CRl6~VoL ~hd 1.3 14. cV LOllcl~ttg: _COlol

_ _ _ 3C'f

31llfGU1:J.OO 111, Y t 4l! cY 241 ranspo~tion Cost 1 15 '" llutno Trudlll2 mi. md "" 31nn211 014 2 9 V 1451C 437

ispos3.1 Costs On slte I1l::wtuI ~41'0 1 4200 B.a. Y 148I CY 1280

~ 'o C~le Oc-rno!:if1lOn D01T!O'11On C«I ~'COncr'ri'<"'IS' ,,"_0001. 13,15 C OUC Sf 2S CV (01 C~·S vai Ot-mO,",~ I ~ 311 l.gadr.o Cust Fl'DtU I"nd' ~r' cv 123 ~a.u 1!m , POy 3II.C'( 63 T..", Ik>. Co<I 12 CV e Tonj Dump Truck 112m1. mil II"! 3 2'3-23 20 1014, 2. .. V 20 311 '( 112 ~lItC'ORS 011 .. ·-..1 02"4' 1a 1 420D eDll II: ~, acv ,2!I

l..;;c' ' . WU!pI!II" Gar2-00 addootf two '\Q,Is

DiOimamina Ccr.;.t ___ StlLI/flO

H l 101U'0II 0 ... lEau.oCm.e:r.l ~$ veL Oe.rnobft,ed SloclBlil. ~. O241,,,'3"'!;!11 0.21 <:F .. 211 .. ..,.,. CF ~_Co'" 5O'1o !lOcUcli:>n Jorno ....... ...... 2IIOCl OF ~

1,,- ,~

T"",! _ - - ~

Note: see drQWing 3 2.1*1

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Sky1~8 Min~ DemoliUon CD:sl, ReYi:ied June 2019

O"'U(iptloo Matenals f"o!feons Unit Urn' Len9th Width Height Diamete( Area volume Wti9h~ DeMlty rime Number Unit 5welf QuantifY Uni r [rlSI

Ref. Rt!/erence Co'!il f ocror Number

Overland Conveyor 15 DrdlJa~nolml!riat'WilU:: 5Irudun!l's Demolition Cosl 024 11 13 01110 0 3 - " 1200( Strud.Uft!)'S Vel. Oemollshed 0.' J333 CY Rubble's WeiQ.hl (e)[rJude sled)

flVClLS CSpuclly

HSUlaae 'TlBl)sporlaUon Cost NDn SI.~el TNcA

·n]/;05pO"~UOI} CosJ Non Sleel Ofive

OisoosaJ Co£.l Non Steel ely .......... CKy_""'" 4,SS ICY 5333 CV 2'09 51eeJs I TNC:1'sCi ~CIt H.ullIOO 11I~1.at1oa Co!il Slec'i~

T[~S ti)a C~t Sl.eeli/Ud( Onw: 0.,. "-lit: Co~ su=o(

.~

EVi m '~ 04s Ulr C'cst O~1mb CO>! Eq"ptl!eM .. VoL Dtmol51\od l~IIIngC($$

T~rt'aon Co~15 DISPO~I Costs

T_ ~

0 :;;:. Z

0 '-- (') - c= 0 r- 0 JJ

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Pftn(ed71Sf.j!01e File Name Copy Qf OEMO_2016070S. ~heet N.lmo OvntandCorweyo"5 Page 1 ofl

Slt,yilneMine Demol~ion Costs Reloised June 201 ft

Description Materials Means Unit Unif t~ngth Width Hf!i9hl OJamt!rer ".0 Volume Wtighr Otnsity nm~ Numb~r (Jnit SW~/) QuantIty Unif Cost

N. t!/. Flejt!rt!ncc Cos l Fo<tor

Numoer

Guard Rail 16 Strw::lIl:~'1i O-c:~C~ ~ .......... OH1 13 ,ao~oo 12.1 LF '500 LF ' .... LF 14HJ5

Sirudure's Vol. Oemol~l1ed 01 nov Rubble's 'tNeiQhl (exclude steen

TrucJU; Capacitll

Haulage

Trnnsportaltol1 Cosl Non Sleel Truck

Tran:s.POrtaUon C(I~ 1.101'1 Sl~~ Orive

Oi$~CoutiQJ'l Steel 'ySoNbs e'r 8eMce Pdao 4,33 V Hev 7. 61«ltl_, TI\kI(I Co:

"" T~loo ~ SteOJTruck T",_alJon Cos. SI .. , lUCIe Il<M Olsoasal COY Slee! SUtitatil L: .. ~

EtI.......,,,, "< 0<.fN"" CG1j Oi.smanULnoCo51 E ;u~i;I'j'VbtJ~ed

l "'"' C4$l.> T ..... II co,,1.$ l%.PC::IIIlCam

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Tabil U2GS

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Skyline Mme Demolition Costs Rev.sed June- 2016

De5CfipticIfl Matefwl!: Mt"ons Unir .unit ieng!/! Width H~Jght OJamf!tt!'r Alr-G Volvme WeJghr Oensrey Trme- Number Umt Swdi Q uontJty Umt [rut

(lef Refer~nc.e Cost Factor

I Number

Rock Dust Bid 17 SWt:Iu:rt"1 DemQIfion C011 W 41 1"3QQl!1l D.27 ;/' 1550( CF " e8(

51ruClure's Vot DemolIShed 0 Lr.! C'I' Rubble's Weighl (exclude sleel)

Truck's Capadty f1aul~e

Tmnsporta1ion Cost Ncn Sleel Truck.

TrnnspartBlion Cost Non Sleel Dnve

OlspoSiI C(l~l N.on Sleel ely SOMces ely Sor.b>1'7IcIt 4.33 V 17 CV 745 ,

Sl ..... \ · .. l!!hl f"""" c.._ o~l)Q:e

'f 11l1l~QOI1ablin Cti1 :::tu1 Trw:1 r:= Cnl Slce Truclr; Dalo'e

OiSIIOUI ~'" 5!001

I,"""", I n I:

u '~ D4 nil CoSl 0...".. CO>! 1 EI:Iu.".:1'It ., vot CC'mo~tG

O~II::1tn1'l' Co'Sots mMlIQI'ICOII.S

DtsdOSll C'O'ab ~ ll.::J,-,-,~.,d I Coocro: fC: DalllCJ4liOo

ol')lll:llilion CCSf NAeI50n Conaele <15- N!o!s<» OUdo 13.71 t;V &'cY ... -Concre:lO':c Vbl. OcolDal:1iN6 13 iIIICY

lo,,"~ CC>l FmdOflll ....-lCY :)1 Z!,&.t2,,.,. 1~ tIOiC V no T~n'.PMoMn ~I I CV 15 ""' DumpY",,, , " ,,,- ,,,,, "" 3.1 Z3 : 2Q '014 z. .. O'C OOleY clll 01>"""" Ce ... 00 ... -' 10241 " " UDO .~ c n;

5-ubt;>tal I ". r_ ~

itoF.""SoreIlolcs ro!<al .... PliO, 10 :Ill ..

0 ~.

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Pnnled71S12016 File Name Copy (If OEMO_201B0705, 'tAIGrkshecl Name RodtOusl81d17 Page 1 of1

S.kyiine Mine Oe~~1on Casts ReviseQ June 201 H

Oescriplion MQI~riQls Means Unit Unit h ngth Widlh Height Diame.er Alea Volume Weight DensIty nme Number Unit Swell QUDrtflly Unit ( 'ost

Ref. Reference Cost f octor

Number

Overland Dust Collector 18 S/ltJdun", ~ c ... Slftl BIC!" '--0 Hl.alJIJO<j> D.2l i:F {600 CF 12S0 structure's Vol. OemolistJed 0.3 53 V

Rubble's WelQht (e~e steeO

Truck's Capacjly

1iauJo.,. rransDOrtlilllon Cost Non Sleel Truek Tl1JnsportaUon Cost NDn Sleel Drive

ClsoosaJ Co$!. Non steel CltySeMces ~y-""",, •• 3 I/CV 5l CY 229

Si!HfI W!..grll r ....... c."",,,~

"""-T'~_~non Can Slcll:.l TI\d, Transportatkm Co=ot Sleel Truck Drille Olspc~:Ol GMt Sh:r1 SWtobl L.. __

... '>0 tldCO:R OI:mlnfljt1G. Colo! ""'Wom",.", Vo" O<:_ed LooOlnoCO>IIi rj';JM(XK1C=~ Ci:lpogJ eMU

~U ... "

rGCII I.5Z5

0 :<" Z 0 e.- n ...... c:: 0 0 r- :IJ Ci) "U ro CD 0 en Qo fII.,: :0

s: I ~ ;:l m 5" 0 to

Pnnted1JSa018 File Name copy of DEMO_2016070S, \Norkshcet Name OVertandDustcoNedor1a Page 1 af1

Skyl!l'le Mlne Demolition Cosls Rewed June 2018

Dt!5wpt-on Marenais Meons Vnir Umt I t'"ngth Width Heighr D lOmt.'/er ArpD' V W /JrT/!:! Weigl'l r Dt'n.s ity rime Numb l!!' Umt $wdl QUaMllY Unit COil

(l. cl ReferencP Co">! f'oaor Nvmber

Substation 19 S.~'SC~CoS1 SI .... ~ (l2 41 1 e l~~ 027 CF 27Q Strudun!!'s Vol. Demolished U 11 CY

R_ ', iI\!!V" <.-0 "OCn TrucJo.'s Capacity

HaUlage f raosPQrtaholl Cost Non Steel Truck

'rlillnsprn1.a1ion Cost Non Sleel Orive

/spout Cost Non Sleel CIlySeNices CIIy SeMce Price 4 3a 11 Y •• Sl1:t.fs VC' I TNd'.Copoc.ly ... .tl:i~. TrOfUpot\4'l.icn CO$I Sk_d Tfl'C;k Tn:ln5~ft eou S4c.d TI\III:l onve OlSposot CO" SIod !ua.!c!.11

ISqu.Gm_Al'S Od~C~ O'\sman(]Joa Cost E mc.n1 's Vo LOc.mo.li:s.b.ed lCilding Cc3il!J TI'iln~pcpr1co;~

D~p)I.Il COl.tJ. :,,,,",'W,

Cona:(t- DemOhl~ [)enolil!oo CGSI _"""""" <1 -.CluoIo 13, 3 CY • C\' 1010 C~(I·:i. Vot Demoloru:d I.J R CY t.ooo c;.., ftOnllftCl l..OODtt' l 3t.n 10,.&21300 ' G7 CY ,~

T~:!IQCWU~a cost 12cy , e TCIII 1lu!TC>'1lld< 1/Z mi. mcI lit! l, 232320 ' 01' 2.IlS Y Pa C 25 Dl>po~CG:ib on sre CfbpCISa ~2 " Ie 17 QGO ',M~' IiC C 8.."0 5t;~~ .. w. l .

TCIbI -.,:

Neill" YQ'urnr- 0 1" CY

0 ~.

0 Z - C0- O

0 C - I 0

:IJ G) Ol

iJ CJ)

<.D 0 S20 ..... : J'j

:5: i ~ ;:;' ;:;'

111 CJ

to Prinlt!fJ7M12016 FItB Name Copy 01 DEMO_20160705, \Nof1tsheel Name SubstaUon19 Page 1 or 1

SkyhncMme D~molition Casts ReViSed June 2016

Of'S.!jpclon Matenals M~an:5 Unit Unit Lenglh Width H6ght Dlamete! ~re'a Voiume WeigM Ol!nslty r,me Number Unir Swell QUantiry Unit CO$.r

R'I R~/~rl!'ncr? Co:;r f actor

Number

Power Line 20 ~f1lo·$D~C~l EIomIc>I Dt:mo«.on I_SJOOUI70 1.1 c:t :IOCLF 52~

SINa>ItD" V ... D«rooI""'" R..-" Wliom ...n.du".g ~,""""'COC_ Hm;lllge Tmr\:lpot'I'otlcn CO$t N.c" Sh~1 ~ ·Tn.x:Jt

fllMOOtlI tICt1 Cost Non SJee1 C~ O~"CMl"'oro~ Stt,efl-\.\' (

T ....... c.~ .HeIs!ogo It;;t;ruoonl:.tl,n Cdri Slt!d Truc.t

J1IMQOrtIJlon Cost $lc:r:1 TnrdI: DfI'IIC' Ili$p;;t$ai COil St«1

_1!;10:. 't ,

EJ1'*ft':llI!ns's~C~ DCmimt:~C~1

E nt "'V,gL~tI:C!dI

l .. ~."Ilc.." ransDOI'1 Costs

OisPOSll1 Costs

£Ubt0t~1

T_ 1§lI ---- ----- - --- - - -- -

"'ole Demo wlume (or Me Is Insignirlcanl and Bccounled for 'NIttlln concrete of facility

0 :;::" Z 0 '- () - c Q r- 0

JJ G) - "U 0> CD 0 (f)

S20 ..... : :IJ

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Prinled7J812016 FHe Neme Copy of DEMO_2016070S Worksheet Name PowerUne20 Page 1 of 1

Skyline Mine Demolition C(']sl:; Re'ot'ised June 2016

D~lcriptiorl Materials M~(Jns Unit Unit Length Width Height f) iameter Area Volume Wf!ight Density rime Number Unit SlNell quontilv Unit Cost

~'f Reference Cost Factor

Numb~r

Cap Magazine 21 Strua~'Ji D~.an CMJ lSloe! BId. lJugo D2411613 D02fl 0.27 iIcI' CF 34 structure's Vol OemoUshed 0.3 1 CY

Ru_ .. WtiDIII 1'-•• "'.11 Truck's CaDacit'V H iI_UICijl tt

TrJMporIatlon COlI Non S\e:cJ TI'UdI. Tmnscortilllon Cost Non Steel Oflve

Olspo~dl Co3i1 Non Steel City SoNiccs City Senlico Pl1co Ol iJCY , y

SIIUf!'1~m TI'IJO'i. Cl:tmef~ Hliul; II'

T COil SllI.li!1 TI\W.k

nlM~ (..oj, S!¢G4 TftJI:k DnVD

O*:liIl C-alil S3lCe-I So ,.

IEqI.lIprrw:nt "'$ Dl:spcJll c~ DW11l1l1WUQCOS' I~"""" VOl. 0."", cd l~_IngCg.s.j!l

TOU'9G'\(;Q.<t:o Oi'sposat CD-sts

Subtuuil

ToW . -- - .. - - ~

0 :cO z 0 '- () - c: 0 0 r- ::D G) "U ~ CD 0 (J')

::D QO ~

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Prlnted71612016 File Nilme Copy of DEMO_20160705, \Nor:k.sheet NiifTle ClilpMagulfle21 Page 1 0(1

Skytina Min~ Delnotihon CosCs Re'VlSed JUlIe 2016

DeSCflpWM Mareflofs Means Unit Um t Length Width Hf' ight l);"amltf.tr Area Vo/um~ W~lghr O~ml ty rime Number UnIT Sw eJl QuanCity Ul'llt {"ost

Rei R~/erenu Cosl Foctor Numbu

Propane Tanks 23 !

Sirudure's DemoliUon Cost Steel BId t..rs. Z41 16UtIOlO 02'1 f(;f ~ .. 3! CF 1132

S,,,,,,,,,"'>VoID_..s .. - lUl .... 011. _ lOA OJ CI '=l'f Rutclt-~ v.: tJlf:l~'~G Truc:i.'SoCt ....... ,....._ eo .. No!> SI.d r""" 7i'i111'\"5ilocuiUon C(.Jt NDft Slc.d o.;..,.e Oi1;oo$.llll CaSt Non Sled :av "SetWz.s SOM:a Prico 4s.J o V 0 StC!er~ Wc' I ..:.cheo

Tfi.l~~SlC'<tITtUdc

Tr:liIIflsOOl12,oon Cost Sleel Truck Oriye ~posaJ Co,, steel S .W'to~ .. i

1Equc:ml!'nt ~I [)i$pcIW CG!.l ~ . Ce.>t

uilom~~ .. \/01. Omnc~ed I.lw&IQ Cost> TnmsDOftCosts OISpOsal Costs 5 t!b~Ofil!

C""","", !)GmoG!;oo

OeIOClWanC()ll Jetson Concrete "::1 NI*onOuole ,:1 C 303 COC'lUClte~!i Vol Oe.tnOl4tIC<I t,3 CY Looa c." roal end I oador 3 CY 'l12l1lU 1300 18 Y :lie •• ,.,. 1100"'..;1 12CY '.T"'1I""""'T"""' 1JZml.mO~ 3123 23 20 '01. 2~ Y ZI Y ell oaposal Cos\s 0.. ... -" 02 41 nl 1 . 200 ee IC :II Y 25' :<.ubt:)t:)i ;>'

T ..... IDI

Needs to size the lank b.tseCi on 02 eS 10 3(1 0011 thrl)UjJh (1130

0 .< Z a c... (") -- C 0 r- 0

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Prfn\ed7~12016 F~e Nama Copy 0( 0EM0_2016070S Womheet Name PraPfinoTanks23 Page 1 of 1

Rpl

Skyllno Mine

IOe'Krlpfion

IStacking Tube 24 ~Cft.n:'~C~

iNa". C4tpxily ~-

it Ncn $edTNtl ~I Non Slectl Onve

);';po,ot' itee1's'Wllctn g"' .... ~pot>!,­

"'IJloQO ,1s/edTN" ,1 stHi TNCl Oti ....

,Str<1

I ~""'''''

I'"

IC~·51

11c"""'l1I:""

1000000>l c.~

-7_

Nolo Volume I!i in CY

0 :::: ~ '-0 c:

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IMolClI015

"'" lDicoot 3 C'I

!:J2i" l"""'_

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eJeren(e Number

31 23 18 • • 1:100 3\ Zl 2'320 '01~ 02.041 t 'I

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fDl'~Cflp' lon Malerials Means Unif Umt engfh Width tfelght Diameter IArl?G 'Volume W t'lghr DenslCy Time Numbu Unit Swell Quantity Umt Cost

Ref. Refl'renc(' Co~t f actor

~mber

Reclaim Tunnel 25 Sttudum's DcrnofiJan Co~ sttLtdl~It'1 VQI, tmncrlSJ'lHl R.,;,bt!Ws V c::D:Ndo 51 TNd.'. C<Ip>CiOy HJII1.I~'e

TIUf)!.DOItDilOI'II ~I No.n $te'e-l 'f1Udt nlfl:Ipon;l1l(1t1 CMj Non stt"r1On-w. O_~ .. I eo.. Non Sk«1 SJlM!n. ~1

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OQcnI!t!! Oe:mcdkH\ Oemolition Cost NWson Cornc..nIII:I <1!''"' N_Q"". 'US y 1\150 CY 2$1150 Cona'IIcl.t-'o. VOL O.c:rnW::lh~ 13! 2MlI cy LoadlotGCoot F""" .... L_lCY • 23'1& 42 .300 1 ,5 y Bey • rtiln~porUSlan C~ 1 HI ruCI< IJ2 3, ZI :z:t""JD'4 2 Y .... 1,>17 Disposal CoslS on,...~pClt"" 02411517 QCO US .,... 22040 SubotCt.i.

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Skyline Mine Oemolihon Costs Revtsed June 2016

De5ulpliCn MotenaiJ. M eanS" Unit Unit I..Imgfh Widrh Helgh[ V,umerel Areo Volume Weltjht Drnsity rime Number Unit $wef/ Quantity U .. , Co~r

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Slope Proctection Apron 26 Structure's Demolition Cost ~-5VClL. D~ed

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Shyline Mine Demolition Costs ReVlSed June 2016

--Dn.:rrotlJtJ Mo[enols Means fJmt Uml l.ength Width HeIght Diameter fA reQ Volume W elghc Density 7iml" Number Un;r 5Wf?ll Quantity Unir Cost

fl.,,! Rejerence ~OS( Falfor

Number

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5""10,"_, Sib t r:aP ......... 1.1 II:W00ut _\'1"~"", .. "",, 00IN.~1oO Ca>l Nic_ Cooc:mo <1,'

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e.'.","'" ~ VoL o-.molltll«i • 22,1

LQa.dLf1io; CQ1.tJ. F_ . ...,~3CY 3'23"842'300 U V I 22,lC l1 rrAlu~.Coa.U. 12CY'8T"""""",_l rucl< 'Ir.lmLm<l1rIr 3123 23211 .B14 2 liS Y I 22.' CY D$

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l Olldioo Cost F _ _ UMIdot 3CY 31 23 18 42 1300 18 ICV 2 CV ~'

ral1spon;;r,llon Cost 2 CY 18 Torn eo.". T",,,, 112 mI, md.1rIr 312323211 101 .. us cY 2 c U Disoosal Costs On site dtsposa 024118 4200 los leY 2CY 234

~\I;.t.:r.~1 -Tib! 'U~

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SkylJne Mine DemolitIOn Costs Revised June2016

CctIl'rl.ClhM Mat~fla!$ Me-om Uni! Umt i..fmgth Width Height Diameter Areu V~/tlme Weight DelHil}l rime Number Umt 5wt'li Quanhty Unil ( oH

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Number

Raw Coal Silo 28 Stn.k:SUt'D~~rlCO.:;t

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EQ~" Dl>oo>oJ CO« Ohman Cc;.:;:' Ea~_~~ ~$ VcJ. OmtO'=l'Ie<I

l_C""" Tra5!:)CX1Costs

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CQoctlno OCi1tlQf!bOn a._~ _ Conao:e <1 5" NIoIson a....;e ~ :r _S omo Concrcl." Va!. a_ u 18& CY L .... c ... "."_...-..a_",, 1 03'0,02'_ 1.0 !5'_'t 18& CY 147& Transportation Cosl 12C .8 TDI1) 0Um0l rud<.J2 ml md ... ~.232320 10" ...... Y 18& CY 200II ~pos.aICosrs 00"'_" ez ~1 .a . ' <200 005 ~C 1&(7

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O!'.lCn,ll ion !Mat~nalS' M(;QM Unif UflIr l englh Width H~,gflt OJametr:T ~'ea VOlume Wei!?I'Jt Dcnsily T,m e Number fJnit Swefl QUan fi ty Unit C(ls f

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Parkin!:! Area Middle 29 &tnJdW'D'S D~~ CCiIl.I _ "",',vO\c_

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De5CllpUQlJ Moreno!!. M~ans Unit Unit Lf'l'Ig/h W,drh k f' ight Diamerer jArC"CI Vo/umto WeIght !Density Tim t: Number Un i t Swell QUDl'l firy Um t [ o sf

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Road Pad Lower 31 ~ro:, D<moIolOn C<I<l I S,,,,,,,,,, VQL O~ R'UtoIc!:lI WOgI'rI e.ll:l:N3 itnl) nxt:'s C.lJl)acty

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OeJcrjptJon MalerUlls Meon$ Unit UnJl l.en9 1h Wldlh fH,ight D/Qmeter fArea Volume W~ight pensity rime Number Unjt 5w~JI QlJontity UnU Cost

R~f flt'jert'(tce Cast ~octor Number

Steel 35 SD\lClw~·S~CQ.l1 5lrudw'a~ V.al Dcmqli1.hc<l RII~",,"'Ilnl _." T"""". CAj>oCily How:.oe TnM'I:ipon~ C411 Nono Sh~:et TrW TfDI1~_~R Colil Non Sltcl oaw. O<SPO'" COst Non Sled tl!ltt:r:s \\It:lQbl 2000 TON 2000 TON TnA. C ... OI •

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Cost Costs Overhead WQaeRote

19140 1182.5 01 554

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Earthwo<1< Costs ReViSed June 2016

Number Totol Equip +

Hourly a[Men Eq. & Lab. Production Labor

Cost arEa. Costs Units Quantity Units Rate Units Time/Dis. Un;ts Co.s-t

3051 1 305.1 SIHR 1674() CV 7915 CYIHR 211 HR 64J76

36.~ 05 18.33 $IHR 211 HR 3868

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FIle Name Earlh_20160620 and lNor1<sheet Portal01 Page 1 011

Skyline MLne Ear1hwof1< Cosls Revised Juno 2016

~eference Hourly Operator's Number ToCol Equip. +

Equipmenr Operating Equipmen t Hourly Hourly a/Men £q. & lab ProductIon labor Page Year Cost Costs Overhead Wage Rote Cost or Eo. Costs Units Quantity Units Rate Units Time/Dis. Units Cost

Skyline Mine

Water Tank 02 026 areas

Backfilling and GradIng -

~

9B8G EROPS (9--37) (15114) 21000 11 9 32 01 52.25 31475 1 31475 SIHR 1683 CY 276.1S CY/HR 6HR 1J89 769D (20-11) (1sl14) 21000 11932 0.1 4915 31165 ~ 934.95 SIHR 6 HR 5610 Pid<up Truck Crew 4.4 1 Ion (20-17) ( lsl14) 1105 1555 01 4195 65JIE 1 65:96 SIHR 6HR 396 CtAS JE65 1 36.68 SIHR SHR 220 foreman Average, OLttsido 51 1 51.9 SlHR SHR 3U

Place Topsoil

769D (20-11\ (15114) 21000 11932 0 1 49.15 31165 1 31168 SIHR. 420 CY 92 CYIHR 4.6 HR lAM 968G EROPS (9-37) (1sI14) 21000 11932 0.1 5225 31475 1 31"-75 $Il:IR 46 HR 1448 DaR Series II (9-54) (15114) 19000 3S2.27 0.1 554 56165 0 o 5IHR 48 HR 0

CtAB 36.65 1.5 5498 SIHR 46 HR 253

410G EROPS 4V11O EXTEN (9-26) (ls114) 3E2O 27.05 01 S5A 10778 1 107.78 S/HR 03 AI; 1 AI;JHR 03 HR 32 CtAB JE65 1.5 54.98 $lHR 03 HR 16

-J Pid<uo Truck Crew 4x4 1 Ion (20-17) (15114) 1105 1555 0 ' 41.95 6596 1 65 96 SIHR 46 HR .1!13 Fomman Average. Outside 519 1 519 $IHR 4.6 HR 239

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Skyline Mine Earthwork COSIS Revised June 2016

Reference Hourly Operator's Number Total Equip. +

Equipment Operating Equipment Hourly Hourly a/Men Eq. & Lab. Production Labor

PI1!}e Yeaf Cost Costs Overhead Wllqe Rate Cost or Ea. Costs Units Quantity Units Rate Units Time/DIs. Units Cost

Skyl,'lII Mine Mlno Fao~uos Alan

Lower Terrace 03 Back/illing and Grading

PBR Seri.s II (9-54) (1sI14) 19000 35227 0.1 55 4 56165 0 O!$IHR 79 5 HR u

631G (9-51) 11s(14) 16500 9375 01 554 261-65 3 784.95 iSlHR 795 HR 61~(4

CLAB 36 65 1 36..65 ISIHR 795 HR 2:.914

Foreman Average. Outside 519 1 51._9 I$IHR 4(1 HR ~076

Pickup Truck Crew 4x4 1 ton [20-17) (ls114) '105 1555 0' 41.95 6596 1 65.96 :MiR 4Il HR 2633.

Pfu(;e Topsoil

DBR Series II (9-54) (1s114) 19000 35227 D.1 55 4 56165 IJ o ISIHR 211 HR 0

631G 19-51) (15114) 16500 9379 D_1 554 26165 1 261.65 IISIHR 211 HR 5521 CLAB 3665 1 36.65 ISIHR 211 HR 113

14H EROPS 19-11) (2H2014) 14500 82.39 0,1 554 23665 1 236.65 ISIHR 21.1 HR ~993

410G EROPS 400 EXTEN. 19-26) (15114) 3620 2705 0.1 55 4 107,78 1 107.78 ISIHR 21.1 HR 2274

ClAB 3665 1 36.65 ISIHR 211 HR 773

Foreman Averaf!e~ Outside 519 1 51.9 $IHR 211 HR lu<JS,

Pickup Truck Crew 4x4 1 ton (20-17) (15114) 1105 1555 0_1 4195 6596 1 6596 S/HR 21-1 HR l3n.

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Reference Hourly Opera for's Number TMal t-qulp +

EQUipment Operatmg Equipment Hourly Hourly a/Men Eq, & lab. Production Labor

Page YeGr Cost Costs Overhead Wage Rate Cost orEq_ C05tS Units Quantity Units Rate Units Time/Drs. Units Cost

Skyline Mine M ino FaCIlities Area

Middle Bench 04

oaR Serio. II (9-54) 15t14) 19000 35221 01 55.4 561.65 1 561.65 S/HR 122.48 HR 63]80

631G (9-51) (15t14) 16500 9375 01 55.4 261.65 3 784.95 $lHR 122.48 HR 96125

CLAB 3665 1 36.65 $IHR 12248 HR 4~(,~

foreman Average, Outside SUI 1 51.9 $IHR 61 HR 315~

Pickup Truck Crew 4x4 1 ton (20-17) 11st14} 1105 1555 01 4195 6596 1 6596 $lHR 61 HR 40, ~

PI"". Topsoil

D6R Series II (9-54) l.t14) 19000 35227 01 55." 561 .65 5 2BOB.25 SIHR 20.9 HR S8S9Z

631G 19-51) (1st14) 16500 9375 01 554 261 .65 1 261.65 SII:IR 20_9 HR 54S~

CLAB 3665 1 3865 $lHR 20.9 HR 1£a

14HEROPS (9-11) (2H2014) 14500 6239 01 554 23665 1 23IL65 $IHR 209 HR 4940

410G EROPS 41t\ID EXTEN (9-2B) (15114) 3620 2705 01 55.4 10776 1 ,107.78 S/HR 20.9 HR 2253

etAs 3665 1 36.65 $lHR 209 HR 766

Foreman Average. Outside 519 1 51.9 $lHR- 209 HR lUB~

Pickup Truck Crew 4x4 1 ton 120-17) (1st14) 1105 1555 01 4195 65.96 1 65~ $IHR 20.9 HR 1379

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Re/e renCf!! Hourly Operator's Number Tata r Equip +

Equ ipment Operating Equjpment Hourly Hour1v ofM~n Eq. & Lab Production Labo,

Page Year Cost Costs Overh~ad Wa ge Rate Cost or £'1. Costs Units Quantity Units Rate Units Tim';Ois Units Cast

Skyline MinD Mine Facilities Area

Upper Bench West Fork 05

DBR Sooos" (9-54) (lsI14) 19000 352Zl 01 554 S61.S5 1 S61.55 $IHR 315 HR 210G;;

631G (9-61 ) (ls114) 18500 9315 0 1 554 261,65 3 784.95 lsIHR 375 HR 29436

CLAB 36.65 1 36.55 SlHR 375 HR B74

Foreman Average, Outside 519 1 51.9 ~ 19 HR 98t Pickup Truck Craw 4x4 1 Ion (20-17) (15114) 1105 1555 01 4195 5595 1 65.Qe $IHR 19 HR 253

Place Topsoil

D8R Serios" (9-54) (ls114) 19tJOO 352.27 0.1 55." S6165 5 280825 $IHR 23.7 HR ti6SSfi

1631G (9-511 (15114) 18500 93.75 01 55.4 261.65 1 261_65 SlHR 23.1 HR 62Dl

CLAB 36.65 1 36.55 So4iR 237 HR 869

14H EROPS (9-11) (2H20141 14500 B2.39 0 1 554 23665 1 .236_65 SIHR 952 HR 2253

410G EROPS 4WD EXTEN 9-26) (ls114J 3620 ZlOS 0.1 55." 107.78 1 107.78 So4iR 952 HR lOr CLAB 3665 1 3655 $IHR 952 HR '4. Foreman Average Outside 519 1 51.9 $,iHR 237 HR 123'

Pickup Truck Crew 4x4 1 Ion (20-17) (l sI14) 1105 1555 01 4195 65.91; 1 6595 SIHR 237 HR 1563

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Hourly Operator's Number Total Equip, + Reference

EqulpmefH Ope-rating Equipment Hourly Hourly a/Men £q. & Lab Production Labor

Page Year Cosr Costs Overhead Wage Rate Cost or Eq. Costs Units QUDlltit}! Units Rate Units Time/Dis. Units cosr

Skyline Mine Mine Facilities Area

Upper Bench West Fork 05

D8R Senes II (9-54) (ls!14) 19000 35227 01 5sA 56165 1 561.65 iSIHR 375 HR 2.05J

1631G (9-51) (lsI14) 16500 9375 c, 554 26165 3 78495 SIHR 375 HR l",t> CLAB 3665 1 3665 t.tIR 37.5 HR 137" Foreman Average, Ou's~e 519 1 ~1. $IHR. 19 HR 981>

Picku.D Truck Crew 4)(4 1 (on (20-17) (1.114) l10S 1555 01 4195 6596 I 65.96 SIHR 19HR :2,3

Place Topsoil

DBR Series II (9-54) (1.114) 19000 35227 01 554 561 .65 5 280825 SIHR 23.7 HR 665~) :..

631G (9-51) (l.tI4) 16500 9375 Q 1 55 4 261 .S!:! 1 261 .65 SIHR 23.7 HR OlD (

CLAB 3665 1 36.65 WR 237 HR ,t/.; i)

14H EROPS (9-11) (2H2014) 14500 82 39 01 554 23665 1 236.65 $IHR 9.52 HR 2253

410G EROPS 41Ml EXTEN 9·28) (15114) 3620 27 05 01 55.4 107.78 1 10778 SIHR 952 HR 102;

CLAB 3665 1 3665 S/HR 952 HR 34Q,

Foreman Average, Outside 519 1 519 SIHR 237 HR 23!J'

Pickup Truck Crew 4x4 1 ton (20-17) (lsI14) 110S 1555 01 4195 65,96 1 65.96 S/HR 237 HR L:ib>

I

-D4158

::J :C. z ~~ '- (")

0 C 0 r-- :D G) "tl ll) CD 0 (Jl :D $20 ....::

~ ~ ~ ::!- m ::J 0

CO

Pnnled 7/612016 File Name Earth_20160620 and \NO<t<sheet UpparBenchWeslFOfI<OS Page 1 of '

Skyline MlI1e

Skyline Mine

Loadout Fadities 07

B •• kf1lllng and G~lng

bBR Series II

631G

CLAB

Foreman Averago. Outside

PlCIwp Tt\JCk CrllW 4x4 1 ton

Topsoil

1631G

D6RSanes II

CLAB

,4H EROPS

410G EROPS 400 EXTEN

etAS Foreman Average Outside

Pickup Truck Crew 4x41 Ion

lsubtatlll

:-:1 <: z 0 c.- O .....

C 0 0 r-JJ

G) -0 Pl ~ 0 (J)

::IJ s;.>c> ..... : ~ ~ ~ 5 - m 5 - 0 (0

Pnnlo>d 71612016

Reference

Paqe I Year

(9-54) 1(15114)

(9-S1) 1(15114}

(20-1711 (lstI4)

(9-51) 1(1.114)

(!J..54) 1(1511 4)

(9-1') 1(2H2014)

1(9-2.B) II lsl'4)

(20-Hl l [1sI14)

Equipment

Cost

19000 16500

n os

16500

19000

14500

3620

1105

Hourly

Operating

Costs

35227 9375

1555

93 75

35227

92 39 27 OS

15.551

Equipment

Overhead

01

01

01

01

0 1

01 0.1

0 1

EarthwOf1< Cosls

Operator's

Hourly

Wage Rate

Number I Total

Hourly I of Men Eq. & Lab

Cost or Eq. Costs Units I Quantity I Units

5541 56165 561.65IS1HR 5541 261.65 3 784.9SISIHR

3665 36.65I$IHR 5H 51 .GJ$IHR

41.951 65.96 6596ISIHR

5541 261_65 784.9SISlHR 55-41 561.65 561.65!siHR

36651 3665tSIHR

55 ~1 23665 236.651S/1:1R 5541 10778 107.78IS1HR

36.65 36.651SIHR 519' 5j s lSIHR

41951 65 ,9E 65961&11:!.R

F,I. Name Eal1h_20160620 and VIIo<1<sheel LoadoutFaclillOs07

Production

Rare

Equip. +

Labor

Units I Time/ Dis. Uni t's

ee SIHR ee alHR ee 81HR

44IHR 44IHR

28.41HR 2841HR 28.41HR

2841HR

28411'iR 2B41HR 28.4IHR

28.IHR

R.Vlsec June 2016

Cost

49875 69104

3255 2284 290

22293

1S9S~

104

67U 30U 104 1414

1873

181.475

Pag.1 of 1

Skyline Mine EarthwO<1< COSIS Revised June 2016

Reference Hourly OD~'Qtor's Number Total EqUJp +

Equipment Operutmg Equipment Hourlv Hourfy at Men £q, & lob. ProductIon t.abor

Page Year Cost Costs Overht?ad Wage Rate Cost ortQ. Casts Units Quanrity UfJlts Rote Units rime/Dis. Units Cost

Skyl ine Mine

South Fork Portal Area 08

Backfilling and Grilding

CAT 345BL II (10-23) (l sI14) 17095 1131 01 55.4 2B665 1 296,65 $IHR 252 HR 7224 I6x4 70,0001bs 12-18 CY (20-1 1) (l sI14) 4410 6345 01 554 15216 2 305.52 $MR 252 HR 7699 ~GEROPS (9-37) (ls114) 21000 11932 01 52,25 314.75 1 31475 $IHR 252 HR 7932 D6R Series II (9-54) (l sI14) 10800 6136 01 554 190 4 1 190.4 $IHR 252 I-IR 4798 PickuD rruck Crew 4x4 1 Ion (20-17) llsl14) 1105 1555 01 41.95 6598 1 65,96 SlHR 252 HR 1662

CLAB 36~6!! l~ _54-98 $Il:!R 252 HR 13~ Foreman Average Outside 51 9 1 51,9 SlHR 252 I-IR 1308

Topsoil

988G EROPS (9-37) (lsI14) 21000 11932 01 52.25 31475 1 314,75 SlHR 3S82 HR 1U74 D6R Series II (9-54) ( l sI14) 10800 6136 01 554 1904 1 1904 SlHR 3562 HR 6IIZO:

14H EROPS (9-11 ] (2H2014) 14500 8239 0,1 554 236,65 1 236.65 SlHR 3562 HR 84n' 410G EROPS 4'MJ EXTEN (9-28) (ls(14] 3620 2705 01 55,4 10778 1 107.78 SlHR 3582 HR 3861

PIckup Truck Crew 4x4 1 Ion (20-17) (ls114) 1105 1555 01 4195 6596 1 65.96 $lHR 35,82 HR 2363

eLAS 3665 1 3665 SlHR 3582 HR 1313 Foreman AVer.:I'Je. Outside 519 1 51 ,9 $lHR 3562 HR 1lIS9

- - -- -- ~- .-

61915

0 '2' Z <3 .. I- 0 0 C 0 r- :D (j) "'0 ~ CD 0 CFl

S20 ~ :JJ

~ i ~ ;J m S· 0 (0

Pnnled 71612016 File Name Earth_20160620 and Wor1<sheel SoulhFo",PortalAreaOB Pagel of 1

Skyline Mine Earthworl< Cos Is ReVised June 2016

Rf1erence Hourly Opera tor's Number ToCa} EqUIp . +-

Equipment Op!'roting Equipment Hourly Hourly a/Men £q. & Lab Production Labor

PQQ~ Year Cost "'.IS Overhead W-Dge- Rate Cosr or fq~ C",," Units QuonUl)l Ufll ts Rore' Units Ti~/O ... Unjr. (0$1

Skyline Mine

Waste Rock Disposal 09

e.ck/liling and Gndlng

CAT 345BlII (1(1.23) p .11 4) 17095 113 1 0.1 55. ~ 286.SS 1 286.SS SIHR 45 IiR 12.90 6)(: 70 OOCIbs l Z-18 CY (2(1.1 1) (10114) 4410 63~ 01 554 152.76 2 305 52 $lHR 45 HR 1375 geilG S""1I5 II EROPS (9·37) 0 51141 1300C 73.86 01 554 217 9 I 2179 sn-!R 4 5 HR 981 06R Series II (9--54) (1<114 ) 10000 61 .:16 01 554 1904 1 190.4 $lHR 45 HR 857 P!d<U1I Truck Cmw 4x4 1 Ion [2()..11) ( 15114) 1105 15.55 01 4t95 SS-,-96 1 ~ ~. 4 5 HR 29l

In 511u TopspoU

CAT 345BL II (10-23) (15114) 11095 1131 01 -S5..4 _ ,SS 1 286.SS SIHR 20.9 HR S99-.! 6X4 70.00c1bs 12-1 8 CY (ZO-11 ) (1$114) 4410 63~ 01 55 4 152.76 2 305:52 S/MR ZO.9 HR 6185 9SOG Serios II EROPS (9--37) (15114) l 300C 1386 01 55.4 2179 1 2179 S/MR Z0 9 HR 4SS4 D6R Series II (9-&1) (15114) 101100 61.36 0 1 554 1904 1 190-4 $IHR Z0 9 HR 3979 PIC!<U1I T!1Jck Cmw 4x4 1 Ion (20-17) (1.114) 1105 1555 01 41...95 SSJl!i 1 65.96 $IHR 209 HR 1379

Toj>5Oll l'loco_nt

6X410.000lbs 12-18 CY (2(1.11) lst l4) 4410 63.45 01 55.4 152.76 3 458 28 SlHR 2798 HR l2822J B86G EROPS (9--371 (1$114) 21000 119.32 01 52·25 31475 1 31.(76 $IHR 279.8 HR 118067 ClAB 3665 1 36.6 SIHR 279.8 HR 10255

14H EROPS (9-11 ) (2H201 4) 14500 82.39 0 1 55_4 236 SS 1 236.65 SlHR 279.J HR 6621S 410G EROPS 4WD EXTEN (9.28) ( 1ot lo1) ~ 27.05 01 554 10778 1 1()7-78 $IHR 2T9.S HR 3OJS7 Pdwp Truck Crew 4x4 1 ton (10-17) 11.114) 1105 1555 0 .1 41 95 SS.96 1 e5:96 ISIIiR 2798 HR 18456

F MlmiI<I Average. Ou\s;de 51_9 1 51 .9 $IHR 2798 HR lAS22

'----- --- - - - '----- - L _ - '----- - _._-- - -- -

SUIi4Ol:ll 382981

0 < 0

Z ->. "-

_9 c (')

r- 0 :D

G) lJ Q> U>

c.c 0 Qo ,,~ :D

~ ii ~ 5- rn 5'

PnnlefM)s,2016 0

File Name Earth_20160620 and Wor1<sheel WasleRockDlsposalO9 Page 1 of 1

Skyline Mine Ear1hwor1< Cost. Revised June 2016

Reference Hourly Operator's Number Totol Equip_ +

Equipment Operating Equipment Hourly Hourly aIMen £q. & Lab. Production Labor

Page Year Cost Casts Overhead Wage Rate Cast orECJ_ Costs Units Quantitv Units Rote Units Time/D;s_ Units Cost

Skyline Mine Interim Sediment Control

loadoul Facilities Sediment

Pond Enlargement Interim 10

960G Series II EROPS (9 -37) (1.114) 13000 73B6 01 554 217 9 1 217,9 $IHR 43 HR 931 CLAB 3665 1 .36.6!; $lHR 43 HR 158 Foreman Average, Outs ida 51 S 1 51,9 $/HR 43 HR 223 Pickup Truck Crew 4x4 1 ~ (20-17) (15114) 1105 1555 0.1 4195 65.96 1 65.96 ~ 4.3 HR 284 - - -

SUbtotal D

0 <:

0 Z

~ (") - c: Q r- 0 JJ

G) -0 til tD 0 (f)

R<> ......: JJ

:s:: ~ ~ 5' m

Pnnted 7~D1 6 0 File Name Earth_20160620 and 'VVorksheet PonclEnlargementlntenm 1 a Pagelof1

Skylrne Mtne Earthwot1< Costs RevIsed June 2016

Reference Hourly Operaror's Number Tota l EQIJ;p. +

fquipment Operarfng Equipm~nr Hourly Hourly o/Men £q. & lob. Production Labor

Page Yeor Cost Costs Overhead Wage' Rare Cost DrEQ. Costs Units Quanti ty Units Rate Units Tim~Dis_ Units Cost

S~ylinO Mine

""""m Sediment Control

LDad<>.ol Diversion to Sedim ent

Pond Diversion nU2 Interim 11

14H EROPS (9-11) (2H2014) 14500 8239 01 554 236.65 1 236.65 SIHR 1 HR 231 CLAB 3665 1 36.65 S/HR 1 HR 31 Foreman Average Oulside 519 1 61 .9 $lHR 1 HR S2

Pickup Trud< Crew 4x4 1 Ion (20-17 (1.114) 1105 15>55 01 4195 6596 1 65.96 $lHR 1 HR 66

392'

Q ~ Z 0 \- (') - C 0 r- 0

:II G) ""0 III CD 0 en R<> ...... :II

s: ~ ~ ;5- m Fiiied 7/612016 a !O

FIle Name Earth_20160620 and VVOrksheet Pondo.verslOODU2tntenmll Page 1 of 1

Skyline Mine

Skyline Mine

Interim Sediment Control 12

SJlckflll Pond Wilh

Emb""kment M."'f\;I.l 988G EROPS

CLAS

Foreman Average. Outside

Pickup Truck Crew 4.4 1 Ion

Topsoil Placement

1Ft Depth

988G EROPS

CLAS

Foreman Aver.age, Outside

PickuD Truck Crew 4x4 1 ton

Diversion Removal CU2

14H EROPS

CLA8

Foreman Average, Outstde

Pickup Truck Craw 4.4 1 Ion

0 :c:' 2-Q G) W (f)

S2C :s: 5" S" ec

~ c .--CD

.....: ~

Pnnted 7/612016

z () o ::D "'0 o ::D

~ m o

RfOJerence Equipment

Page YeDr Cost

(9·37) (15114) 21000

120·17) (15114) 1105

[9-37) (1 5114) 21000

(20.17) [1 5(14) 1105

(9·11) (2H2014) 14500

[20·17) (lstI4) 1105

EarthworK Costs RevI5ed June 2016

Hourly Operator's Number Tatol Equip + Operating EQujpment Hourly Hourly at Men fQ & lab. Production Labor

Costs Overhead Woqe Rare Cost or El1 __ Costs Units Quantity Units Rote Units Time/Dis_ Units Cost

11932 01 5225 314.75 1 ~14:75 SIHR 68 HR Z140 3665 1 3665 ~R B8 HR 149 519 1 519 i$IHR 6.B HR 353

15.55 01 41.95 6596 1 65,96 SiHR 6.8 HR 449

11932 01 5225 31475 I 314,75 5IHR 22 HR 692 3665 I 36.65 ~R 22 fiR 81.

519 1 51.9 $MR 2.2 HR 114 1555 0 1 41.95 6596 1 65.96 $lHR 22 HR 145

~

8239 01 554 236.65 1 23665 $lHR 1 HR 237

36~ 1 36.65 $IHR 1 HR 37

519 1 51,9 ~ 1 HR 52

1555 0. , 4195 6596 1 65,96 $IHR 1 HR 66·

46lS:

FIle Name Earth_20160620 and Worksheet IntefimSedlmentControl12 Page 1 ofl

Skyline Mine E.rthwork Cosls ReVISed June 2016

Reference Hourly Operator's Number Total Equip +

Equipment Operating Equipment Hourly Hourly o/Men Eq. !I lab. Production Lobor

Paqe Year CV5t Costs Overhead Wage Rote Cost orEq Costs Units Quantity Units Rate Units Time/Dis. Umts Cost

Skyline Mine

Overland Conveyor 13

6X4 70,OOOlbs 12-18 CY (20-11] (15114] 4410 63.45 0.1 554 15276 1 152.76 S/HR 23 HR 351 988G EROPS (9-37] (15114) 21000 119.32 01 5225 31475 1 314.75 S/HR 23 HR 724

CLAB 3665 1 36.65 SiHR 23 HR 114 Foreman Average, Outside 5H 1 51..9 $II:lR 2,3 HR 1U Pickup Truck Crew 4x4 1 Ion (20-171 [1.114) 1105 15.55 01 41 .95 65.96 1 65.96 :SIHR 23 HR 151 410G EROPS 4Vv'D EXTEN (9-28l (1sI14) 3620 2705 01 554 10778 1 107.78 lSIHR 23 HR 148

!iIlbtolOI 161.

CJ ~. Z 0 '- (") - C 0 9. r- :0 - "0 0

"' 0 P> :0 CFl .....:. ~ $20

~ s m 2: a :::l

pnnl • .Hilol2016 File Name Earth_20160620 and Worksheet OvertandConvoyor13 Page lor,

Skyline Mine Ear1hWOfI\ COSIS Revised June 2016

Reference Hourly Operators Number rolal Equip + Equipmenl Operating Equipmen1 Hourly Hourly 01 Man Eq, & Lab Produclion Labor

Page Year Cosl Costs Overllead Wage Rale Cost orE", Costs Units QuanlilV Unit. Rate Un~s TIme/Dis Unils Cost

James Canyon 14

See Demo wOfksheat

21-101 15114

SU!tota/ - I' 'j' -

CJ :;::" 0 C0-

2 - () 0 c: . r- 0

:D G) '1J Ol en (D 0 QO ""

:D

s:: i ~ ~: m

0 PnnloQ:Zl6l2016 File Name Earlh_20160620 end VIIor1<sheat JamesCanyon14 Page I orl

Skyline Mine

Reference Equipment

Page Year Cost Winter Quarters Ventilation Facility 15

Sealing S/laft

(+) 6 inch rock 20 38

2: Inch - 4inch Rock 2929 Gra>el 2929 Sand 23,Q!! Bentonile 21·10 1sl14 3535 Concrete 120 Fill Malerial 7 0 6R Saies II IS-54 ,.114) 10800 Eo Op Medium Equlmenl

~'V:Ol<:l'

S1Ialing Es<~J!G SI>oI\ + 6 loch rock 2038

2.inch .• inch Rock 292 Gravel 2929 Sand 2308 Bentomte 3535 Concrete 120 Fi l Molerial 7 5>.Jb;o~

Cementateous Groul 125 Benlooite 35.35 Concrete 120 Fj lMillenal 7 06R Series II !J.54) 15\14 l 0a00 Eo. Op medium equipmenl

~tnnr.'li

Ilackfiliing and grading CAT 3451lL II 10-23 (15(14 17095 P6R Series II 9-54 1s114 l 0a00 Pickup Truck Crew 4x4 1 Ion 20·17 15(14) 1105 eLAB Foreman Averaae. Outside

Suh!iJt<.l1

~t D6R Senes II 9-54 1st14 10800 PickLI.P Truck Crew 4x4 1 ton 20·17 15114 1105 e LAS Foreman Average, OutSide

$ubtot~t -!fO!~ ': ___ . -~- ---.-----. - -- ~

Pnnle<J 7/612016

o <: g" o 1:."') 0-m Qc

~ ~"

5" ec

'­C r-

CD

~

ii

z (") o :0 "1J o :IJ

~ m a

Hourly

Operating

Costs

6136

61 ,36

1131 61,36

1555

6138 1555

..

Earthwor1< Cosls Revised June 2016

Operaror's Number Total Equip, +

Equipment Hourly Hourly of Men Eq & lab, Production Labor

Overhead Wage Rat~ Cost orEq. Costs Units Quantity Units Rote Units Time/Dis. Units Cost

2038 1 2038 CY 283 283 CY 5768

2929 1 29.29 IJ.<' 95 95CY 2783 2929 1 29,21; cy 614 614 cy 1798<\ 23 CIS , 23.tlE CY 47 47 CY 1085 3535 1 35.3! cy 127 127 CY 44B9

120 1 121 CY 114 114 CY 13680 7 I cy 2839 2839 CY 19873

01 55. 1904 1 1911 HR BO HR 1 80 HR 15232

6172 6172. 1 61;7 HR BOHR 1 IlO HR 4!!38 g583~

2038 1 20,38 CY 32 32 CY 652 292 1 29 CY 105 105 CY 301

2929 1 2929 Cy' 213 213 CY 6239 230e 1 23.oe CY 5 CY 115

35.35 1 35.35 CY 22 22 CY 178 120 1 120 CY 30 3C CY 3600

7 , 7ey ~3 323 CY 2261

13952

12,§ , 125 Cy 89 89 HR 11125 35.35 I 3535 CY 45 45 HR 1591

121l 1 120 CY 11.5 115 HR 1380 7 1 cy, 4<15 ~ HR 3115

01 554 190·4 , 1004 HR ao HR BOHR 15232 61.42 1 6L~ HR. BO HR IlO HR 4!!14

3'/35J

" 01 554 286.65 1 286.65 HR 12HR 3440 0.1 55A 19O.A , ·190. HR 16 HR 3046 01 4195 65.96 1 65.95 fIR 20 HR 1319

36.65 1.5 54.95 HR. 20 HR 1100 51, 1 51..9 HR' 20 HR 1038

9943

01 554 190 4 1 190.4 fiR 20HR 380e

0' 4195 65.96 1 65,96 HR 20 HR 1319 36.65 , 36.65 HR 20 HR 733

51. 1 S1<Jj HR 20 HR 1038 6898

" " , 'l:: . ~ , ~ ~ .. ~ .. r . ~~~ - - _. - .. l.

FIle Name Earth_20160620 and Worksheet VVinter Quarters venlllatlOfl Page 1 of 1

Skyline MIne Earthwork Cosls RevISed June 2016

J Hourly Operator's Number Total Equip ~

Reference EqUJpme-nt Operatmg Equipment Hourly Hourly atMen Eq. & lab. Production Labor

Cost Costs OVerhead Wage Rote Cost orfa CDSts Units Quantity Units Rate Units Time/Dis. Units Cast

North of Graben Bleeder Shan 16 Page Yeor

Sealirl.9.Shall -.. 6 inch rock 2038 20.38 , 20.38 r:v 27 27 CY 550

2 Inch • 41nch Rock 2929 29.29 1 29.29 CY 9 9CY 264

Gravel 29 2S 2929 , 2929 CY 179 179 CY 5'243 Sand 2308 2308 , 2308 I':'f 4 4 CY 92 Bentonite 3535 3535 1 35..35 r:v " 19 19CY 672 Concrete 120 120 1 120 r:v 25 25 r:v 3000 FtiL Material 7 7 1 7 r:v 1656 1656 CY 11592

Gener;alfll l by dozer 312323170320 1.67 CY 6739 CY 5739 HR 126/12 Sl..'bto~a' 3401 5

SvotNul

5(Jtrtot;::a~

Backfilllnq .nd grading CAT 345BlII 10·23 1..114 17095 1131 01 554 292 'ill 1 292·97 HR 12 HR 351 6 08R Series II 90S<! 15114 19000 35227 0.1 55.<1 &42.'ill 1 &42<'ill HR 1 HR 102.1!8 Pidw» Truck Crew 4.4 1 ton 20-17 1st1 1105 15.55 0.1 4195 83~ I 83.28 I-lR 20HR 1666 CLAB 36.65 15 ~98 HR 20 HR 11 00 Foreman Average, Outside 519 1 7635 HR 20 HR 1527

S-,b· o.!.ll 1809"1

TOIl,oil DaR Series II S-54 ,.114 19000 352.27 0.1 55A &42..97 1 642.l17 HR 20 HR 12859 Pickuo Truck Crew 4J<4 1 too 20-17 lstl 1105 1555 0 1 41 .fl:5 8328 I 83..28 HR 20 HR 1666 ClAB 36.65 1 36,65 HIt 2Q HR 73.3 Foreman Average. Oulside 51 .9 1 76.35 fiR 20 HR 1527 S:..Jb~otdi 1618S

mAL . . - -. - - .,; -----~ - ------ - - ~.-- -- - - ,

,

C) '-

:z

2 c:: ()

r- 0 G:'

:0 Pnnled 71612016 -0 File Name Earth_20160620 and Wor1<sheel NOG 16 Pagel 011

Q) ef) c.o 0 Qc "'-: :0 ~ i l> 5' -i m s- O CO

Skyline Mine

Swens Canyon Ventilation Facility 17

Sealing Shaft 16ft 0 + Slnch rock

2 Inch - 4inch Rock Gravel Sand eenlonite Concrete

General fill bV doz.er

5ubtot,"l1

Sut.':vtai

Sl.-1:)tot~1

B.ckfDlIng,and g •• ding CAT 3458lII DBR Series U PICkUDTruck. Crew 4x4 1 Ion CLAB Foreman Averaqe. Outside

SubtotZl I

Topsoil OaR Series II P>ekuD Truck Crew 4.1<4 1 ton CLAB Foreman A'Io!eume Oulslde Sr,.;l':lwta\

~~N.

Pnnled 71612016

o :;::.

8.. o G) m en S20

~ ::!. ::I

CO

t­C r-

CoD

..... : ij

I Reference

EquJpment

C05t

Page Year

20.38

2929 2929 230B 3585

120

312323 17 0320

lG-23 94l 2!}.17

9·54 20·\7

z (") o ::0 1J o ::0

~ m o

1.114 17095 l!i11 4 1!1OOO 1011 1105

tol14 19000 1.11 l1 D5

Hourly

Operating

Costs

113 I 35227

15.65

35227 15..55

Earthwor1< Costs RevISed June 2016

Operator's Number Tot.! EquIp +

Equipment Hourly Hourly afMen £q. & l.b Production Labor

OVerhead Wag-eRate Cost orEq. Costs Units QUantity Units Rate Units Time/Dis. Units Cost

20 38 1 ,20.38 CY 226 CY 226 CY 4606

2929 1 29.29 CY 76 CY 76 CY 2226 29 29 1 29.29 CY 491 CY 491 Cy 14381 2308 1 .23.08 CY 38 CY 38 CY 677 35.35 1 35.85 CY 1(12 CY 102 CV 3606

120 1 120 CY 91 CV 91 CV 10920

1.1J7 CV 7074 CV 7074 HR 13226

49844

I

I

01 554 29297 1 292.97 HR 1 HR 3516 0.1 654 642.97 I 642.97 HR 161-lR 10288 01 4195 83.28 1 83.28 HR 20HR 1668

36.65 IS S4.9S HR 20HR 1100 51 .9 1 76 35 HR 20 HR 1527

1S091

01. 654 642.97 I 642.97 HR 2Q HR 12859 0.1 41 95 B3 2S 1 B3..28 HR 20HR 1666

36.65 1 36.65 HR 20 HR 73-.1 51 9 I 76.35 HR lO HR 1527

1678,. • ~- !. .. ... , . :JmIIII

File Name Earth_20160620 and Wo!\<sheel SwensVenll7 Pagel of I

•

4.4 BACKFILL, SOIL STABILIZATI N, COMPACTION, CONTOURING AND GRADING

The objective of the propo backfilling, soil stabilizing,

compacting, contouring and rading process is to achieve a

reclaimed surface which will provide a variety of topographic

features effecting enhanced po tmining land use.

Reclamation earthwork activities will be conducted as outlined in

sections

TIMETABLE.

4.12--POSTMINING

The steps to

LANDUSE AND 4.2--RECLAMATION

e taken in the backfill, soil

stabilization, compaction, c ntouring and grading program are

described in the following sub ections.

4.4.1 Backfill and ion

Backfilling operations, utili equipment such as rubber-tired

scrapers, front-end loaders, ulldozers, and dump trucks, will be

conducted in the portal, sedi entation pond, and subsurface silo

areas. Holes or depressions will be filled when the mining

operation is concluded. Compaction operations, utilizing

equipment such as sheeps-fo tampers, will be conducted to

stabilize all filled holes nd depressions. The portal fill

material will be put in plac using special equipment such as a

LHD (load, haul, dump) unit to ensure proper backfilling.

When mining is completed, all buildings and steel structures will

be removed from the mine s teo Concrete foundations, walls,

stack tube, reclaim tunnel, be broken up and will

be used as backfill in the m'ne portals, or buried and covered

with minimum of four of cov r material to provide an adequate

growth material for the propos d perennial vegetation.

•

•

Foundations that will be in de will not need to be broken

up. All asphalt will be bro and hauled to a certified

landfill. No asphalt will be b ried on site.

Structural removal will inc concealment .or removal of

structures containing obtrusive form, line, color or texture. Area

cleanup will also include alter tion, concealment or removal

Revised: 2/23/2006 4-27(a)

INCORPORATED

MAY 0 2 2006

Div. of Oil, Gas & Mining

4.4.2 Grading and Final Contour

All highwalls and cutslopes will be reclaimed using geotechnically stable fill slopes with surfaces

that have been sufficiently roughened with deep gouging. The operational bench slopes will be graded

back to the approximate original contour at a two horizontal to one vertical slope (2h: 1 v) or shallower upon

abandonment, utilizing a bulldozer working along the slopes. A geotechnical analysis will be made of this

slope at the time of reclamation and design adjustment made as necessary to insure slope stability. The

sediment pond at the portal area will be removed during the initial reclamation phase.

The reclamation plan is shown on in maps 4.4.2-1A, 4.4.2-1AA. 4.4.2-1 B. 4.4.2-1 BA, 4.4.2-1 B1 and 4.4.2-

1AC. Costs and mass balance data associated with reclamation may be found in the Engineering

Calculations, Volume 5.

Grading operations will be possible at the railroad load-out site which will be returned to the approximate

original contour and shown on Maps 4.4.2-1C and 4.4.2-1D. Water Tank final reclamation contours are

shown on Maps 4.4.2-1 E and 4.4.2-1 F. The waste rock disposal site final reclamation contours are shown

on Map 4.16.1-1 B.

The Winter Quarters Ventilation Facility grading and final contour plan will be similar to the sites listed

above. Once excess material has been used in sealing the slope and shaft as outlined in Sections 4.1.2

and 4.9, any retaining walls, highwalls or cutslopes will be reclaimed using geotechnically stable fill slopes

with the final surface being roughened with deep gouging. The pad will be graded back to the approximate

original contour, unless the post-mining land use changes. The sedimentation pond will be removed once

sufficient re-contouring of the pad has taken place. See Plates 4.4.2-3A and 4.4.2-3B for the reclaimed

site configuration.

The North of Graben (NOG) Bleeder Shaft is similar to all previously listed sites. Once the shaft has been

filled as outlined in 4.1.2 and 4.9, any cut-slopes will be reclaimed with the final surface being roughened

with deep gouging. The pad will be graded back to the original contour. Plates 4.4.2-5A and -5B illustrate

the reclaimed surface.

The Swens Canyon Ventilation Facility will continue with the grading and contour plans listed above, using

geotechnically stable fill slopes. Material generated during construction of the shafts and stored in the

cuttings pond area, will be used as backfill for the shafts following the backfill designs located in Section

4.9 and Figure 4.9-B. The pad will be graded back to the approximate original contour. The small section

of the USFS road that was rerouted for access to the pad will be re-established in its former location.

Plates 4.4.2-4A and 4.4.2-4B illustrate the proposed final reclamation designs.

Revised: 5-27-16 'NCO~&>RATED

JUL 1 9 1lJR

Div. of Oil, Gas & Mining

• 4.4.2 Grading and Final Contour

All highwalls and cutslopes will be reclaimed using geotechnically stable fill slopes

with surfaces that have been sufficiently oughened with deep gouging. The operational

bench slopes will be graded back to the pproximate original contour at a two horizontal

to one vertical slope (2h: 1 v) or shallo er upon abandonment, utilizing a bulldozer

working along the slopes. A geotechnic I analysis will be made of this slope at the time

of reclamation and design adjustment m de as necessary to insure slope stability. The

sediment pond at the portal area will be r moved during the initial reclamation phase.

The reclamation plan is shown on in m ps 4.4.2-1A, 4.4.2-1AA. 4.4.2-1 B. 4.4.2-1 BA,

4.4.2-1 B1 and 4.4.2-1AC. Costs and mass balance data associated with reclamation

may be found in the Engineering Calculat ons, Volume 5.

Grading operations will be possible at th railroad load-out site which will be returned to

the approximate original contour and sh wn on Maps 4.4.2-1 C and 4.4.2-1 D. Water

• Tank final reclamation contours are sho n on Maps 4.4.2-1 E and 4.4.2-1 F. The waste

rock disposal site final reclamation conto rs are shown on Map 4.16.1-1 B.

•

The Winter Quarters Ventilation Facility rading and final contour plan will be similar to

the sites listed above. Once excess ma erial has been used in sealing the slope and

shaft as outlined in Sections 4.1.2 and 4.9, any retaining walls, highwalls or cutslopes will

be reclaimed using geotechnically sta Ie fill slopes with the final surface being

roughened with deep gouging. The pad ill be graded back to the approximate original

contour, unless the post-mining land us changes. The sedimentation pond will be

removed once sufficient re-contouring of he pad has taken place. See Plates 4.4.2-3A

and 4.4.2-3B for the reclaimed site config ration .

Revised: 3-24-1 0 I~~PORATEO

JUL 2 9 20\0

Oiv. of on, Gas & Mining

•

of this slope at the time of re

contours are disposal ,. si

4.16.1~

4.4.3 Soil Stabilization

ible at the railroad load-out site approximate original contour and -10. Water tank final reclamation

4.4.2-1F. The waste rock are shown on Map

In addition to the vegetative stabilization discussed in Section 4.7 - REVEGETATION PLAN, physic 1 stabilization of the soil is also planned. The specific methods 0 be implemented will be defined on the basis of additional soil a alyses at the time of reclamation. An example of the soil stabiliz tian methodology that might be used includes the placement of crus ed and heavier material at the toe of road fill slopes and along tream banks.

4.4.4 Stabilization of R'lls and Gul!ies

All rills and gullies which er e to a depth of nine inches or more will be filled, regraded and re eeded unless there is less than two feet of cover; then when the r'lls reach six inches in depth, the areas will be regraded and rese ded. The areas may be regraded and reseeded for other situations f deemed necessary by the Permittee and the regulatory agencies.

~---- --.-.-.~ ...... ~.,.--~ ~~."

CHANGE TO:

Section 4.4 4.4.2 Pag j--- - .. _---

Ii' ...... .-I ., . 4-29

O!"iSjU~, Ui 01 'GAS g. MI~;;NG PRICE tHAti ---------- _ ........ ------~~

/93

• 4.4.5 Acid and Toxic-For ing Materials

Extensive testing of soil mat rial near the coal seams failed to

identify the presence of y materials capable of causing

acidity or toxicity problems. (Refer to Hydrology Section of

Volume A-I for test resul These test, however, were

conducted using different rocedures than those currently

requested by the Division. re recent tests on waste material

removed from the mine have giv n mixed signals, particularly on

acid forming potential. (Rec nt test data from representative !

samples are attached as an exhibit to this section.)

Material placed at the waste disposal site will be compositely

sampled on a quarterly basis curing periods of deposition at the

• site within a minimum of 1 sample per 2000 tons hauled, unless

it has already been sampled at the temporary minesite gob pile.

Composite samples will also l::e taken during recontouring prior

to final reclamation at the We ste rock disposal site and on the

waste material to be left at the loadout facility site.

Analyses of potential toxic or acid forming materials will

follow the parameter list and will use the methods outlined on

Table 6 of the Divisionis approved Soil and Overburden Handling

Guidelines. Operational test iata will be submitted to the

Division annually. However, slould acidity or toxicity problems

CHANGE TO: TEXT

Section 4.4 Page 4-29 Sect on 4.4.2 Page 4-29(a) Date 08/10/93

• I NC01=lrotlMED

JUl 2 9 2010

Div. of Oil, Gas & Mining

•

•

•

be defined either during operation or reclamation, the Division

will be notified immediately and mutually acceptable remedial

action will be taken.

waste material temporarily sto ed in the mine site gob pile will

be tested for each accumulation of approximately 2,000 tons if it

is going to remain at the tem~orary site longer than three

months. The location in the s40ckPile from which the sample is

taken will be identified. Ie will be a composite sample from

throughout the pile. Material found to be toxic will be removed

to the permanent disposal sit within 30 days or as soon

thereafter as weather conditions permit. Drainage from the

temporary storage si te

the discharge is tested

conditions.

Waste material generated

Facility (WQVF) Declined Sl

facility pad itself.

to the sedimentation pond where

rdance with UPDES Discharge Permit

the Winter Quarters ventilation

will be used to create the

will be placed in lifts and

compacted and reinforced with a retaining wall. In the event

there is an exces s of rna teri that cannot be stored on site,

whether from or Vertical Shaft construction,

this material will be rted to the Scof ield Waste Rock

site. Material used in the co struction of the pad or sent to

the Scofield Waste Rock

approximately every 2,000

will be analyzed for toxicity

of material sent to the site.

Waste Rock generated from c nstruction of the vertical shaft

using the raised-bore technique will likely be placed

underground. Similarly, any a ditional material required to fill

the shafts at reclamation, will come from the Waste Rock site.

Revised: 3-24-10 INCOR~TED

JUL 2 9 2010

Div. of Oil, Gas & Mining

James Canyon Road and Drill Pad (Section 4.4)

The James Canyon was reopened to allow a cess to construct a drill pad for the drilling of two mine

de-watering wells in the canyon and burial 0 a pipeline from the wells to Electric Lake. The road

had been reclaimed in the 1970's after the construction of Electric Lake. To reopen the road

between the well site and the Manti La Sal N ional Forest Monument Peak road, soil was removed

from the road surface and pushed to the sid for use as a temporary berm. Four inches of gravel

was placed on the road. Drainage controls ere put in place to minimize erosion.

A t the time of final reclamation, the drill pa area will be returned to the extent possible to AOC

using the subsoil material within the pad an on the out slopes of the pad. The sediment pond will

be backfilled and compacted to reduce s ttlement. Before the sediment pond is backfilled,

sediments in the pond will be sampled an analyzed using methods outlined on Table 6 of the

Division's approved Soil and Overburden H ndling Guidelines. Once the site has been returned

to near AOC, the 126 cubic yards of topso I stored at the top of the James Canyon road will be

transported back to the drill pad and spr ad across the area. The topsoil will be spread for

approximate depth of 2 inches.

To reclaim the road, the material from the t mporary soil berm will be set aside and the gravel will

be pushed to the cut slope side of the road. he out slope will be pulled back to the extent possible I

to be used as fill and the material from the t~mporary berm will be placed on top. The road will be I

returned to near approximate original con our (AOC), dependant upon on the total amount of

outslope material available for reclamation. The amount of material required to bring the road to

AOC will be determined at the time of re lamation to insure that the disturbance is kept to a

minimum. The road and drill pad will be ri ped to approximately four feet prior to the placement

of topsoil to ensure a proper bond. Following placement of topsoil, a track-hoe excavator will be

used to gouge the reclaimed surface to a inimum depth of 18 inches. Logs and/or rocks will be

placed as wildlife enhancement and to prev nt travel on the road. As material is placed on the road

area, compaction will be kept to a minimu . See attached letter from the U. S. Forest Service.

The reclamation earthwork activities will b conducted as outlined in the following sections:

4.4 Backfilling, Soil Stabilization, C mpaction, Contouring, Grading

4.5 Soil Preparation - Fertilization Ian

Revised 11-2002 4-30(a)

4.6 Topsoil/Subsoil Handling Plan

Planting and revegetation of the James C nyon road and drill pad area will proceed once the

backfilling, grading, and topsoiling has bee completed. The road will be roughened using deep

gouging techniques to reduce runoff and cap ure moisture, reseeded, and certified weed-free straw

or alfalfa mulch and/or hydro-mulch will be s read or sprayed on the road. If used, straw or alfalfa

mulch will be applied at a rate of 1500 poun s per acre. It will be crimped into the soil using either

the teeth of a trackhoe or similar equipment or by hand shovel. If used, hydro-mulch will be

applied at the rate of 2,000 pounds per acr plus 140 pounds of tackifier. Supplemental organic

material will be incorporated into the soil pr or to seeding, the type of material will be determined

in cooperation with the USFS, the Division and the permittee, prior to reclamation of the James

Canyon Road and drill pay area. The appro ed seed mix for this area as described in Section 2.7.5

of this M&RP will be used. Noxious weeds invading the road will be controlled by hand grubbing

and/or approved herbicides. Monitoring a d maintenance will be continued annually during the

period of liability.

The portion of the James Canyon Road in hich the 16-inch pipeline was buried was reclaimed at

the time of construction. The road reclam tion was started around 4 September and completed

by 14 September 2002. Referto Section 2.11) Soils, under subheading "James Canyon" for details

concerning the handing of soils. Reseedin of the buried pipeline area was completed once the

seed mix was approved in November 200 , mulch was not incorporated into the soils over the

buried pipeline. Additionally, the power cab e trench excavated in the borrow ditch adjacent to the

Forest Service Road was restored at the ti e of project completion from the intersection of the

James Canyon Road with the Monument eak Road to the UP&L power poles on the Questar

property was restored at the time of project completion since it was excavated in the borrow ditch

adjacent to the Forest road. A short section f disturbance between the Monument Peak Road and

the Questar property was outside of the oad borrow ditch. This section of disturbance was

reclaimed using deep gouging techniques a d reseeded. Both this section of the power trench and

the entire length of the pipeline disturbance ill be monitored and maintained throughout the period

of liability.

At the time of final reclamation, the staging rea at the top of James Canyon will be returned to the

extent possible to AOC using subsoil mat rial in the area. The amount of subsoil moved during

construction and stored on the out slope of he area was not measured. The out slope material will

be pulled back to the extent possible and sed as fill.

Revised 11/2002

Hansen, Chris

i6:: .0: Cc: Subject:

Carter Reed/R4/USDAFS [cr Wednesday, July 03,20024: pamg rubaugh littig@utah.gov Hansen, Chris Reclamation of the James Ca

In regard to reclamation requirements for no objection to complete recontouring of t instead of waterbars. We would also like and rocks to be placed along the slope to and concentration of livestock during use tend to concentrate on newly planted grass across the slopes. In addition, silt fe silt from reaching James Canyon Creek unti established.

Originally we required only partial recont conditions as existed on this reclaimed ro Fuel). In this case the final slope would erosion and ATV usei therefore we specifie and provide obstructions to prevent ATV

If you have any questions, call. Later

Carter Reed Forest Geologist Manti-La Sal National Supervisor's Office

• West Price River

ce, DT 84501 435-637-2817 creed01@fs.fed.us

•

Forest

Dr.

d01 @fs.fed.us1 9 PM

yon Road

he James Canyon Road, the FS has e road prism and deep gouging s much debris consisting of logs elp prevent unauthorized ATV use f the grazing allotment. They s where it is easy to walk ces would be needed to prevent vegetation is adequately

uring (back to similar d prior to reopening by Canyon not be sufficient to prevent

waterbars to control erosion

'\ .

... .l .":::, ~ ;' .

DJV CF OiL (.'.\~ & A"i\II~'''''' -....... l\1l,1~lh'u

4-30(c)

• Exhi it 4.4.5

Acid and Toxic-F rrning Material Data

•

• 4-31

: :.. .. ~ ... ~.~,_L-_C_O.-:.M_M_E_R_C_IAL TES1~ING Ie ENGINEERING CO. ~_~ GINI;RAL OFFICES: 191, IOUTW HIGHLANO A\ E .• surre 210-8. lOM8ARO. t"L'NOfS 60'''. 008) 953-9300

· UJCI •• _ ' ...... s. _. :.' . PlEASE ADORESS AU.. CORRESPONO£HC&: TO: P.O. BOX 1020. HUNTlNGTON. UT I45ZI

TUEPHONE: (101) 853-23:t 1 FAX: (801) e53024l'i

I

i J i • !

·i ·

I I .

\ £.MS i i

October 3 f 1991

UTAH FUEL COMPANY P.O. 80x 719 Helper Utah 84526

-.-.~-. _. .~ple identification by

.. ..JTAH FUEL COMPANY

lind of saaple Soil reported to us

8a.ple taken .at Utab Fuel

Suple taken by Utah Fuel

Date suplee). July 17,

Date received July 17,

1991

1991

SCOFIELD GOB PIT

- Coarse fra~eDts were primarily coal. This .aterial was processed ~ith the sample and vas not identified as coarse fragments.

ADalysis report no. 59-137494

SOIL AlALYSIS

7.9 units pi COllductivity Saturatioa ,

3.0 IItmhos/em" 40.6

Rock. rrapeuts Total Ii trogeD Xitrate-Ditrogea Organic Carboa

0.74 % 1.10 atg/kg 5.9 %

PUTICLE SIZE AJlALYSIS , Sand 73.1 , silt 20.5 , Clay 6.4

SOLUBLE gTIOIS Caleiua 27.2 meq/l

'MagDesiu. 8.93 meq/l Sodiua 2.66 meq/l

Sodiu. AdeorptioD Ratio

ACID BASE roT£ltllL Raxi.ua Acid Potential Jeutralizatioa Potential Acid-Base Potential

o 62

Total Available Seleniua 0.02 <Mq/lcq

Total Ivail~ble BoroD 1.2611g/kg

Available Yater Capacity 8.1 (1/3) 6.6 (IS)

11.6· tons CaC03/ 1000 tons 39.6 tons CaC03/ 1000 tons 28.0 tons CaC031 1000 tons

Re8pectfu1y autInibIJd. COMMERCW.. 1BJ1NG • EHGINEEAfNG co.

Fe415

COMMERCIAL TESTI G" ENGINEERING CO. GENERAL OFFICES; 1919 SOUTH HIGHLAND A SUITE 21~B. LOMBARD. ILLINOIS 60148. (7081 953·9300

August 27, 1991

UTAH FUEL COMPANY P.O. Box 719 Helper Utah 84526

lind of Duple Soil reported to us·

Sample taken at Utab Fuel

SaJlple taken by Utah Fuel

Date sa.pled ... -~ ... .--

Date received ·June 3, 1991

PlEASE ADORESS ALL CORRESPONDENCE TO: P.o. BOX 1020. HUNTINGTON. UT 84S28

T8..EPHON£: \1101) 65302311 FAX: (801) 653a247V

sa.ple identification hI uTAH FUEL COMPANY

Skyline Soil

Analysis 'rAnL\'r"" no. 59-132420

8.2 units pH CODdnctivity Saturation %

4. 95mmhos/cm 20.0

Rock Fragents Total Nitrogen litrate-nitrogen OrgaDic carbon

3.39 % 0.50 % 1.5 mg/kg 35.99%

PARTICLE SIZE AlALYSIS , Sand 40 % Silt 38 % clay 22

SOLUBLE CATIONS Calcium 21.0 meq/l Magnesium 5.59 meq/l Sodium 8.70 meq/l

Sodiua Adsorption iatio

ACID BASE POTENTIAL Kaxi.u. Acid Potential Neutralization Potential Acid-Base Potential

5 01

Total Available Seleniu. .02 my/leg

Total ATailable Boron 9.0 JIg/kg

Available Vater Capacity 13.9 (1/3) 9.1 (15)

11.2 tons CaC03/ 1000 tons 140 tons CaC031 1000 tons 128. 5tons CaC031 1000 tons

Respeccfully submilled. COMMERCIAl TEST1NG & ENGINEEAtNG co.

vU tXt Manager, HuntlnglDnl.aboratory

OVER 040 DRANCH L\OORA.TORIES STRA.TEGICA~lV lOCATED IN PRINCIPAl. MINING AAE.AS. TIOeWATeR AND GREAT VJ(ES POATS. AND RIVER LOADING FACIUT1ES

/!'")riG11'UI1 W.t.rmark9d ~or Your ~rowctlon TEAMS AND ON ReVERSE

COMMERCIAL TEST. G. I!NGINEERING CO. GENERAL OfFICES: 1919 SOUTH HIGHLAND _".=--_I~'U' 210.8, LOMBARD. ILUNOIS S01M. (708) 953·9300

PlEASE ADDRESS AU. CORRESPONDENCE TO: P.O. BOX 1020. HUNTlNGTON. UT &.4S28

TELEPf1ONE: (101) 1S3-2311 FAX; (801) 153-2479

~ Utah Fuel Co. P.O. Box 719 Hel~er, UT 84526

Sept. 27, 1990

Kindof ..... reponed to US

Sample taken at

Sample taken by

D8tt~PIed

Data raca1wd

Soil •

_~"-'-:'lj_P/SfltPy..D ], LL

K,-!!:I-'~--.Itl.:.:~l: :If?

,pH El.~tri~al conductivity Satur-ation Y.

PARTICLE SIZE: Y. Sand Y. Silt I. Clay

SOL.UBL.E CATIONS: Calt:ium Magnesium Sodium

Sodium Adsorption Ratio

Total Nitrogen Nitrate-nitrogen Organic carbon Rock .f:,.-agmen'ts

Sample IdenttfIGatIon by

Utah Fuel Tabla 6 Tests

no. 59-117921

8.4 units 1.5 mmhos/cm

15.1

82.1 10.0 7.9

18.23 9.03 ~.20

0.87

0.86 0.004 42.67 73.4

meq/l meq/l meq/l

% mg/kg % (.

Available water ~apa~ity* 11.2 (1/3) (i.ATM) 5.9 (15)

<*analysis by Utah state Univ.) Respectfully submfntd. COMMERCtAL TESTfNG' ENGINEERING co.

Manager. HurnlngCon ~

O'YER 40 IlAANCH l..AaOf!tATOAJE8 S'lM.TEGICAUV LOCATED IN PFUNCIPA\.. MiNING AREAS. noewATER AND GREAT LAKES PORTS. ANO RIVER LOADING FACILmES

~ _I ".~_..t--..... -- w ....... _._._ ... __ "'I"E1Ii&M' ....... ¥a.1P'11 ........... rtal ftC'\.,ftCI'C"

COMMERCIAL TES ING. ENGINEERING CO. GENERAL OFFICES: 1919 SOUTH HIGHLAN D AV ., SUITE 210-8. LOMBARD. ILUNOIS 80148 • (708) $63-9300

~Slke.I.I~ .,)

'.

January 15, 1991

UTAH FUEL COMPANY P.O. Box 719 Helper Utah 84526

lind of sa.ple Soil reported to us

Sapie taken at Utah Fuel Xof;flJ 9~I'O:

Suple taken by , Utah Fuel K tp. A.

Date 8upled ------ ~ -"-10

Date received

PLEASe ADOAeSS ALL CORRESPONoe«;E TO: P.O. BOX 1020. HUNTINGTON. UT ~

TELEPHONE: (SO,) 6&3-2311 FAX: (801) 663-2419

Sa.ple identification by

Utah Fuel Soil Sample Table 6 Tests

~1l (page 2)

59-117921

SOIL DALY IS

ACID BASE lOTENTIAL

lentralizatioD Potential Naxi.u. Acid Potential

let Acid Base Potential

BOlOI (total available) SELEIIUK (total available)

173.75 tons CaCOa/ 1000 tons 13.75 tons CaCOtt 1000 tons

160.00 tons CaC03/ 1000 tons

0 .. 12 mg/kg <0.1 mq/kg

Aespec:ttully submitted. COMMEAClAL TEsnNG 6 ENGINEERING co.

Manager. Huntington LabOratory

F...t&5 OYeR M) BR4NCH LABORATORIES a-mATEGICAlL Y LOCATeD IN PRINCIPAl MINING ~ i1O£WATER ANO GREAT lNtE$ PORTS, AND RIVER LOADING FACILmes

nr-~"'I w.o\t.nnllrit9d For Your pl"l)t~ion ttAM..q ANn cnNfl£TlON.~ .... .w~

COMMERCIAL TESTING Ie ENGINEERING CO. GENEFtAI.OFFfCESi 1919 SOUTl-lfoC.GHLANCAVE. SUiTe 210-8. LOMBAAO.1LUNOtSI0148. (312)"3-8300

Utah Fuel Co. P.O. Box 719 Helper, OT 84526

KInd of sample Soil reponed to us

Sample taken at Utah Fuel

sample taken by Utah Fuel

Oat. sampled Nov. 2, 1989

Date received Nov. 15 J 1989

Dec. 15., 1989

Sample identification by Utah F1,.lel

Waste Rock Sample

Scofield Wa5te Rock Fourth Quarter

~

Analysis port no. 59-107744

Neutralization Potential Maximum Acid PQtentlal* Acid Base Account

<*acid potential ba5ed

pH El~ctr1cal Conductivity Saturation Percent Sodium Adsorption Ratio

Particle size analV51~: Sand Silt Clay

Selenium (w~ter ~oluble) 'Boron (~ater soluble)

207,5 tons CaCO, / 1000 ton~ 16~6 ton5 CaCO~ ! 1000 tons

190.9 tons CaC03 / 1000 tons

n non-sulfate 5ulfur)

8,2 unlt3 6. 9 mmhos /cm 25.5% 0.47

81. 1% 6.6%

12.1%

<0.1 ppm 4.7 ppm

~lyau~ COMMERCIAL TESTING & ENGINEERING CO.

OVER 40 BAANCH LABORATOR.ES STRATE ICAU-Y lOCATED IN PRJNC1PA\. COAt MINING AREAS. TlOEWATEA AND GREAT S PORTS. AND RM:R LOADING FAClUTlES

\

COMMERCIAL-TE-ST NO II ENGINEERING CO .. GENERAL OFACES; 191V SOUTH HIGHLAND

Utah Fuel Co, 'P.,O. Box 719 Helper, OT 64526

KJnd of sample So'" 1 reported to' U8 -

sample taken at Utah Fuel

Utah Fuel

SUITE 21()'B. LOMBARO.llUNOIS 80148 • (312) 953·9300

Dec. 15, 1989

Sampl@ identification by Ot.,h Fuel

Wa~te Rock Sample

$ample ~en by

D.~aampled I ,

, /

Nov. ~. 1969 (S:;iJ ~ ft"'~~) Scofield Wa~te Rock Third. Quarter

) rreceNed Nov. 15 7 1989

•• ,

". /

Analy$i$

,Neutralization Potential

/M8Ximum Acid Potentlal* Acid Base Account

I (~acid potential based- 0

pH Electrical Conductivity Saturation Percent S9dium Adsorption ~stio

Particle size analysis. Sand Silt Clay

Selenium (water soluble) 'Boron (water soluble)

~ Copy WatermarQd ForVour~

no. 59-107743

86.2 tons CaCOs / 1000 ton~ 7,~ tens CaCO~ ! 1000 tons

78.7 tons CaCOs / 1000 tons

non-Bultate Bulfur)

S.1 units 5,;; rnmhos I CIt]

21.2% 0.2Q

87.2% 5,9% 6.9%

<Orl ppm 2.5 ppm

AespecttuIJy submttted, OOMUEAOIAl TEST1PG " ENGINEERING CO.

&) uJ· , Manager, Hunangton LaDora1oey

oveR 40 BAANCH LABORATORIES C'1'1:t,l"!'l:lllIll'AI Y LOCATED IN PRI~AL COAL MINING AREAS. TIDEWATER AND GREAT PORTs. ANO RIVER LOADING FACIUTIES

,e

COMMERCIAL TESTI.IG • ENGINEERING CO. -. GENERAL OFFICES: 181'· SOUTH HIGHLAND AVE •• SUITE 21o-e. LOMBAAD.IUJNOIS eo1" • (312) eu.8300

Branch Code

Job. No.

Date Rec'd.

Date Sampled

Sampled By

5900

81025

May 5. 1988

April 26. 1988

Utah Fuel Sample 1.0.

PLEASE ADDRESS ALL CORRESPONDENCE TO: P.O. lOX 1020, HUNTINGTON, UT tI528

'I'EL9HONE: ~1) 15W311

UTAH FUEL CO.­P.O. Box 719 Helper. UT 84526

Rock Sample Scofield Waste Rock Site S1ty Shale. 1 bag

Boron. Water Soluble .068ppm

Selenium. Water Soluble .007ppm

AMpecIfuIy .. bmIaed, COMMERCIAL TESTING • ENGINEERING co .

...".,. HunIngb. L..Ibora:wy

OYER 40 BRANCH LABORATORIES STRATCn""...a.IIY LOCATED IN PAlClPAL CClAL. MtNINB AREAS, noEWATER AHD GREAT LAKI:8 PORTS, AND RIVER LOADING FACtUTIES

COMMERCIAL TESTII~G • ENGINEERING CO. GENERAL OFFICES: una SOUTH HIGHLAND AVE .• isUITE 21o-a. LOMBARD.IWNOIS eo, .. • (312) 853-8300

Branch Code 5900

Job, No. 81028

Date Rec'd. May 5, 1988

Date Sampled April 26, 1988

Sampled By Utah Fuel

UTAH FUEL CO'. P.O. Box 719 Helper. UT 84526

Boron. water soluble

Selenium, wate~ soluble

Sample 1.0.

PLEASE ADDRESS ALL CORRESPONDENCE. TO: P.o. BOX 1020, HUNTINGTON. VT MS28

TELEPHONE: (101) -.w311

Rock sample Scofield Waste ROCK Site Highwall Sandstone

.104 ppm

.001 ppm

OVER «) BRANCH LABORATORIES STRATE( tCALLY LOCAlS) IN PRINCIPAL COAL MINING AREAS. TIDEWATER AND GREAT LN<~ PORTS, AND RIVER LOADING FACIUllES

,... I-I

,

Branch Code 5900

Job. No. 81026

Date Rec'd. May 5. 1988

Date Sampled April 26, .1988

Sampled By Utah Fuel

UTAH FUEL CO.· P.O. Box 719 Helper, UT 84526

Boron, Water Soluble

S e 1 e n i u m , ; W ate r :. Sol u b 1 e

Sample 1.0.

Rock. Sample

PLEASE ADDRESS AU. CQRRESP()IC)ENCE 10: P.O. lOX 1020. HIJNllNOTC*. UT ...

1B.EPHONE: (101) 15N'.S11

Scofi.eld Waste Rock. Site S1ty Sandstone. 1 b~g

.070ppm

.004ppm

AeIpectfuIty IUbmtlIed. COMMERCIAL TESTING & ENGINEEFWtG co.

VAll{ ...... HunIingDI t..bcnkJry

OVER 40 BRANCH LABORATORIES STRATEC.tCALLY L.OCA11:D IN PRINCIPAL COAL MINING AJIIE.M. ~ ... ~ AND GREAT LN<ES PORTS, AND RIVER LOADING FACIUTES

COMMERCIAL TESTING. ENGINEERING CO. GENERAL OFFICES: 1818 SOUTH HIGHLAND AVE • SUITE 21~. LOMBAAD.IWNOIS eo, ..... (312) 853--8300

.. ~ ~ (~'~ll-~--~-------------------~----~-~--~-S-G~ll~--~--~-'-~----.-~--~--_-I----------------------------

Branch Cod~ _ ...... S.J-9 ...... 0 ...... D __________ _

Job. No. 81 ° 1 6

Date Rec'd. May 5. ]988

Date Sampled Apr j J 26. 1988

Sampled By ____ l ...... 1 t .... a ...... h""'---"EL-.oIulool...le_l"'-____ _

UTAH FUEL CO.­P.O. -Sox 719 Helper, UT 84526

Sample 1.0.

PLEASE ADDRESS AU.. CORRESPONDENCE TO: P.O. BOX 1020. HUNllNGTON. UT M52I

TELEPHONE: (101) 15).23"

Rock Sample_ Scofield Waste Rock Site Peridefite, 1 bag

Boron, Water Soluble .114ppm

Original Copy WatenT\8ft(ed For Your Protection

Selenium, Water Soluble .004ppm

~Ity .. bmIa8d. COMMERCIAL TEST1NG & ENGINEERING CO.

rJAcA/ MenIIQer. tUdingIiDn l.IbcnIory

OVER 40 BRANCH LABORATORIES STAA.TE~Y LOCA~D IN PRINCIPAL cc:w. MINING AREAS, TIDEWATER_AND OREAT LAkEs PORTS. AND FWER LOADfNG FAClUT1ES

•

COMMERCIAL TESTI G. ENGINEERING CO. GENERAL OFFICES: 1818 SOUTH HIGHLAND AVE.. UITE 21o-a. LOMBARO.IWNOIS eo1'" • (312'853·8300

Member 01 the 80S

Branch Code 5900

Job. No. 81024

Date Rec'd. May 5, 1988

Date Sampled April 21, 1988

Sampled By Utah Fuel

UTAH FUEL CO.' P.O. Box 719 Helper, UT 84526

Boron, Water Snluble

Selenium, Water soluble

Sample 1.0.

PLEASE ADDRESS ALl CORRESPONDENCE TO: P.O. lOX 1020. HUNTtNOTON,lIT 14528

TELEPHONE: (101) 153-2311

Rock Sample Scofield Waste ROCK Site Siltstone, 1 bag

.08Bppm

<.OOl~pm

RIIpIcduIty IUbmIfted, CQIIIUERClAL TEsnNG & ENGINEERING co.

vlAtJI Original Copy Watennarited

For Your PrcMc:tion ........ HuntIngton I..8bcnIDry

OVER 40 BRANCH LABORATORIES STRA GICALLY LOCAlB) IN PRINCIPAL c::oAL .... NING AREAS, TIDEWATER AND GREAT S PORTS. AND RIVER LOADfNG FACIUT1ES

.~~----~~-----------------. ::-:! ~IJ

lib. No __ -------------

(.~·d . !17.:':O.fi

C7.17.B7 ~.~ ~------------------------------

your~ELVES ~9y--.....:::..;;;~-------- • . i ~:.

:-- ~ .. "' . -. ~ .' .... : <.'

, .' '.'

---(

..

~ •. . '

-. J

' -., ..... , '.

UT.;!! reEL COHPk'Tl CO,;.s';hl, s:'hTES ' £HE~Y

17~ ;'.~T 400 SODTH ':. !.:.~ .. ~~4t ~.'. ; .: i~ crr~·, u'!A.r: (B~j l) ~2 S-7~2e

C,. · r . ­.... .-:' \.." J •

5;- (,-1 t:.~L. C.O€~

.... - .. ,,'

c.~111

-. :

I:LECTP.! C1-.L roJ-~!{1CT

p;'2-Tr~ SIZE

ROCl SI ~.Pi. r. -- SCOFI~L]J .:..

-;: - .-. ~

.... ,

lLln'. _;; :-· ~' . . . r .. : . ' ' :' . . . • ' .

. 1=QUI,? ·· ('l'C::~S/l reo :roNS . C>.! ·_I~'rE~~) I .

1J~';.:: .- '""f':" . ..... ~_ .... .. ... 6

~;-:=,~~:" .. .. . : - _ . . .. . LACr.S5 37.27 ·

~ ;:;" ,.-. -. . - ' .. : .

PASTE pH ~.

·7.$(

. ~ .. ,.~ '.:'

.:-,.

-- . ,. _ .. ' . . ,' ..

. ~~:?: ; ': . , SAND ..•. ~ ;;..~; ___ .. " ..

" -~'- ' . ' :;·.?~i~. ~ ;; .::: ... ~; ~ :e '~ ~: ; J!:~,:;~} ?;~~;;.i~i1 ii.;c~~~ .:.:.>~iij~~--··: ' ." ~ ' .. SODIOH --ABSORPl'lOJrl 10 -' 0."193 . Jaeq/L .. ' ~: .. ~>~: .;>. ~·s~~i·:::-.,~-:;:·::i;:-

. ,.. . . .. .. ;.. . ~ : ... .; ~.. ...... . ' '. _ .. - '. -~; ~ ." .. _>- .. .. ~=- .~,. ~~ f:..!;· .. t~ .

'SATOPATEO ·WATER·· PE C~1-"'TAGE ·- 39.·SCi ;' . .·: .~.~S{:·.:<;~- ·: · . ,. . . : . ~ .. .

TOTAL :SELENIOM ,.:'1. rOB p~ ' .~, ~ .: . -.~

~~;.,~; ~t:'f}:\:)~L . ' -

.... -

RB~~-·----~~ __ ~.~~----~~~.-#-·-·--~~ ________ _?

-:::,CLlr/ ~~:AAT ·CS.21:li7 , .z . • 4.

. ) ~ .. _ . . . -

t,~. ~" t , -f .: r

' . ,# . ',

Br .J !lC ll C0de _ .. . 4 3

Gb t ~u

YOlfRSEtVES ____ _

U T II it F U E L C 0 ~l PAN Y COASTAL STATES ENERGY ~ .. IES'f 72Cv .)vU!H H1 D\'J.::c-, L !l\a 8~Ctrl

ACID - BASE ACCOUNTABILITY

~ ~# ' I r ··· .. " ., '/ -"

WASTE ROCK SAMPLE -SCOFIELD

~~~ol_~g~!~~_i!2~~Ll222_!2~~_Q!_~~!~~I~~l ,\ ~ r MAX.

MAX. FROM AMOUNT NEEDED COLOR rJZZ "/~SUL. ~~~~~____ f~~~~~I E~_2 __ 10YR 5/1 0 0.704 22.00 7 • 73 - 14.27

~ I ) ~ ZZ, () 0 - ,

~/

ELECTRICAL CONDUCTIVITY 700 J-lmhos/cm

PAR T TeA J. S 1 Z F. 1\ N A L Y S T S (R Y H Y n R 0 ~j E T F. R ) ----------------------- --------------

I" SAND 7 .60

iQ SILT 2 .20

.20

SODT1! ~~ ABSORPTION RATl - 1.16

SATURATED WATER PERCEN AGE - 39.16°/"

:.I~:.I~~_~~~~~1.!!!1 - 0.45 ppm

!Q!~~_~2~Q~ = 46.8 ~g/g 1)0 1

FOR YOUR PROTlCTION THIS DOCUMENT HAS R~s~(:ct:ulty Subnlitled BEEN PRINTED ON CONTROLLED PAPER!;; lOCK

PASTE EXCESS

o 7 • 8 (]

•

•

•

4.5 SOIL PREPARATION AND FER ILIZATION PLAN

Prior to redistribution, the

by ripping, disking or other

topsoil.

Following redistribution,

Fertilizer application and

redistributed topsoil will

analysis of stockpiled

topsoil that has been

opsoi 1 stockpi Ie wi 11 be loosened

reclaiming means to break up the

topsoil

rate to

based

will be fertilized.

be applied to the

on and established by

and/or by analyses conducted on

prior to revegetation. The

topsoil will be analyzed for K, Fe, Mg, Mn, Zn, Ca, and pH

to determine the fertilizer formulation and application. The

fertilizer will be applied whe there is suitable moisture in the

soil; and initial application done at the time of seeding

by the same method as the i.e., drilling, broadcasting

or with the hydromulch but be mixed with the seed. If

follow up applications are they will be applied by

broadcasting.

Chemical analyses for

conducted by testing

micro- utrients on the permi t areas

with DTPA solution

was

and soil

measured by use of an

acetate was used to extract

atomic absorption analysis.

by using sodium bicarbona

analysis. The Kjeldahl

total nitrogen. Soil texture

hydrometer method (sodium

absorption analyzer. Ammonium

tassium, calcium and magnesium for

hosphorous determination was made

extraction and colorimetric

was used for determination of

as determined by using a Bouyoucus

ametaphosphate dispersing agent).

Soil pH was determined on a soil/water mixture tested with an

electrode pH meter. Salinity as analyzed by using a Wheatstone

conductivity cellon an of each soil sample. These

analyses correlated with the c nsultant's recommendation that 100

pounds per acre of available itrogen be applied during initial

seeding on all areas for seed ing establishment and to assist in

the breakdown of straw be used for mulch. Actual

mulching will be done as in Section 4.7.2. Additional

4-32

•

•

•

fertilization will be determin d on a case-by-case basis. After

seedlings are established, add tional fertilizer will not be used

to increase production .

4-33

•

4.6 TOPSOIL AND SUBSOIL HANDL NG PLAN

To prevent suitable topsoil f om being wasted or contaminated by

spoi 1 or other waste materi the Penni ttee removed topsoi 1

from the designated areas as a separate operation. The topsoil

was stockpiled and protected from wind and water erosion and

contamination which might its capability to support

vegetation. The following sub ections deal specifically with the

various phases of the topsoil nd subsoil handling plan.

4.6.1 Topsoil Removal

At the start of the constru tion phase, topsoil was collected

site, the from the four major operatio i . e., the mine

load-out site, the conveyor c t areas and the South Fork Breakout

area. Existing vegetation

prior to excavation or

within the affected areas.

Soils are of a sandy loam m

large stones and with solubl

were harvested from 0 to 15

communities and 0 to 8 inches

i

removed and topsoil collected

surface disturbance operations

xture, with a minimum of small to

salts of less than 10 ppm. Soils

tnches in the aspen, spruce and fir

in the sagebrush communities.

The equipment used for topsoil removal consisted of rubber-tired

scrapers (where suitable), ulldozers, front-end loaders, and

dump trucks. The use of crapers allowed the transport of

removed topsoil directly to topsoil stockpile. Bulldozers

were also used to push the topsoil to a collection point for

loading into dump trucks or

designated stockpile.

transportation to the

4-34

DIvWON On... GAS A-m MINING

--I------------_J

The majority of the topsoil in t e portal yard stockpile was originally

4It removed from National Forest lands nd will be returned to National Forest

lands. However, a portion (15.295 quare yards) was removed from prive

land along the conveyor bench.

on private land. Topsoil

topsoil be returned to disturbed areas

o stockpile was originally removed from

private lands and will be returned 0 private lands.

Topsoil and suitable subsoil to be removed from the Winter Quarters

Ventilation Facility (WQVF) area w'll be collected from the disturbed area

as construction advances. the Soil survey (see Appendix A-2,

Volume 2) the depth of suitable m terial ranges from approximately 1,0 to

1.5 feet. Due to the limited amoun of A horizon material, subsoil will be

collected to approximately the 1.5- depth - identified by the increased

percentage of clastics. Constructio will take place on south-facing slopes

dominated by sagebrush and bitter The brush, topsoil, and suitable

subsoil will be salvaged simulta eously and stored in the designated

topsoil storage area.

The soils identified in the soil s rvey are a sandy-silty loam. A mixture

~ of alluvial sediments in the minor iparian areas increase the percentage

•

of fine sand, however this soil wi I remain in place - providing the base

to the topsoil pile. Lab analysis of the various pits suggest suitable

subsoil will be available to approx'mately 1,5 feet where the percentage of

clastics becomes a problem. areas where topsoil/subsoil will be

removed, the EC values range from 0.22-0.9 dS/m (>6dS/m), Sodium Absorption

Ratio (SAR) values range 0.16-0.37, TKN percentage ranges from <0.01-0.04,

Boron ranges from 0.29-0.64ppm«5, and the Field Capacity/Wilt Point

percentage difference ranges from 13-24% - all acceptable ranges to use the

available material. The topsoil an suitable subsoil stockpile is designed

to store approximately 4,421

storage area will be located

of material. An area for the topsoil

ly east of the pad facility (See Plate

3.2.4-3A through -3C). Once stockp'led two composite samples of the

salvaged topsoil will be and analyzed for phosphorus and

potassium. See section 4.6.3 for To soil Protection measures.

Revised:3-24-10-09 4-34(a)

INCORPORATED

JUL 2 9 2010

Div, of Oil, Gas & Mining

Topsoil to be removed from the North of Graben (NOG) Bleeder Shaft area will

be collected from the disturbed area as construction advances. Based on

the Order 2 Soil survey (See Appendix A-2, Long Resources Consultants, Inc.)

the depth of suitable topsoil will be approximately 4-inches from the A­

horizon and up to 4-inches of the B-horizon if necessary. Construction will

take place predominantly on the south-facing slope (Soil Profile 14SKY07)

dominated by quaking aspen, mountain big sagebrush and grasses. Brush and

topsoil will be salvaged simultaneously and stored in the designated topsoil

storage area. Larger trees will be placed in a brush pile wi thin the

disturbed area to be redistributed at reclamation. A small portion of the

existing US Forest service road will be re-routed to utilize flat, previously

disturbed areas adj acent to the road. The northslope is dominated by

Englemann spruce, and other conifers.

The soils identified in the survey are classified as loam and sandy-loam.

The slope is 41 percent. The taxonomic classification is McCadden family,

lithic Haplocryolls loamy-skeletal, mixed superactive. At site 14SKY07,

which is most representative of the site, the EC values range from 0.23-

.037dS/m, Sodium Absorption Ration (SAR) 0.14-0.21, and an estimated

Available Water Capacity range of 0.76-1.35 in/ft. - all acceptable ranges

to use the available material. The topsoil stockpile is designed to store

approximately 1,129 cu-yds of material, and an as-built survey of the pile

and site will be conducted at post-construction to confirm the amount of

material salvaged. The topsoil stockpile will be located at the west end

of the disturbed area where the pad access road leaves the USFS road (See

Plates 3.2.4-5A through -5C). Prior to re-distribution, a sampling of the

nutrient content (N:P:K)will be conducted to deterimine the need for

fertilizer application when compared to the baseline information. See

Section 4.6.3 for Topsoil Protection measures.

The topsoil and subsoil from the Swens Canyon ventilation Facility (SCVF)

area will be collected from the disturbed area as construction advances.

Prior to construction, soil samples will be collected from the A and B

horizion at sample locations 14SKY14 and 14SKY15 and analyzed for available

nutrients nitrogen, phosphorus, and potassium per DOGM 2008 guidelines. The

associated soil survey (see Appendix A-2, Volume 2) the depth of topsoil

ranges from approximately 0.83 to 1.3 feet. It is estimated approximately

8,750 cu-yds of topsoil and 6,350 cu-yds of subsoil will be collected and

stored. The total topsoil, subsoil removal will store approximately 15 '1~~ORPORATED

Revised: 5-27-16 4-34(b) JUL 1 9 itrP

Div. of Oil. Gas & Minin:

cu-yd of material.

topsoil.

Efforts will be made to segregate the topsoil and

The soil units are mapped as the Hailman family and Karnack family which are

both considered a sandy loam found on slopes of 5-15% and 10-35%,

respectively. The Available Water Capacity (AWC) sui tabili ty for the

topsoil component of these units is considered Good to Fair while the AWC

suitability for the subsoil in these units is considered Fair to Poor.

Of the two (2) soil samples collected in the area of the pad, the EC, Sodium

Absorption Rate (SAR), and TOC were all in acceptable ranges to use the

available material (see Appendix 0 of Long Resources Order 2 Soil Survey,

Appendix A-2 Volume 2 for details). The Topsoil storage area is designed

with a capacity of 16,400 cu-yds, located immediately south of the SCVF pad

(see Plate 3.2.4~4F).

Revised: 5-27-16 4-34 (c)

INCORPORATED

JUL 1 9 lUI

Oiv. of Oil, Gas & Mining

•

•

LA ~GES TO

4.6.2 Topsoil Stockpile

Topsoil is stored within areas 0 the permit boundary which will not

be routinely disturbed (See Maps 3.2.1-11 3.2.1-3 1 3.2.4-3AI 3.2.8-2 1

3.2.11-11 and Volume 5 Section 2L). Four topsoil stockpile areas are

utilized: the first at the portal areal the second at the loadout

facilitYI the third at the waste rock disposal site l and the fourth at

the Winter Quarters Ventilation Facility.

Long-Term Topsoil Storage Areas

During construction at the mine site, a stockpile area of

approximately 0.6 surface acre vas established in the draw on the

north side of the site. The lpng-term stockpile is composed of

topsoil collected at the mine site and portions of the conveyor bench.

It will later be used for post-mining reclamation of the benches and

conveyor routes.

A second long-term topsoil stockpile l covering approximately 0.3

surface acre, was established at the load-out site for later

reclamation use in that area. TV10 topsoil piles are located at the

South Fork breakout area (see Map 3.2.11-1)1 and one at the waste rock

disposal site.

4.6.3 Topsoil Protection

Long-term topsoil stockpile protection is achieved by the performance

of the following operational ste~s:

Section 4.6 Page 4-35 Sectior 4.6.2 Page 4-35 Date 3-23-09

• 4-35 INCORPORATED

JUl 2 9 2010

Div. of Oil, Gas & Mining

.;- --•

•

~ • •

A stable surface is prov~ded in an area outside the influence

ot a~ive operation. --

As a stockpile was complE ted, it was left in a rough condition

to minimize erosion.

• A diversion ditch was du~ around these piles to divert runoff

fro~ entering the stock~iled area.

• Storage piles were vegetated with quick-growing,

soil-stabilizing plants. Revegetation involved the immediate

seeding of stockpiled to'psoil with the seed mixtures listed on

Table 4.6-1.

CHANGE TO ~" -" -.;jV

Section 4.6 Page 4 'lC:: ~"H .. t on 4.6.3 Page 4·35 (a}h-:',_JDate 08/10/ c 3

I ~~nv I b '~~J 3 5 (a) f

f !

I Pf"I,; ~ I H. • ,q~~ I

.- . -····_r_ .... · _. _____ .. -.,.~._~_~ UTAH DIVISION Oll., GAS AND MINING

I~----------------------------------------~-----------------------

• Signs are posted to protect the stockpiles from accidental

use as fill or from other inadvertent material

contamination.

• The establishment of no~ious plant species is prevented.

• The slope of stockpiles does not exceed 2h:1v.

The stockpiled topsoil will net be removed or otherwise disturbed

until required for redistribution operations on a prepared,

regraded disturbed area.

4.6.4 Topsoil Redistributior

Topsoil redistribution on slo~es steeper than 3h:1v will be done

immediately prior to revegetation. other surfaces will have

topsoil redistributed prior tc seeding and will be left in a

roughened condition to help assure stabilization. Prior to

topsoil redistribution, regraced land will be scarified by a

ripper-equipped tractor. The ground surface will be ripped to a

suitable depth in order to .recuce surface compaction, provide a

roughened surface assuring tOlsoil adherence and to promote root

penetration.

I MAR 2 31993

r UTAH ]~ON OIL, GAS AND MINING

ADDITION TO TEXT

Section 4.6 Page 4-36 Sec1ion 4.6.4 Page 4-36 Date 01/20/93

4-36

The concrete footers of the o~erland conveyor will be fractured

to a minimum of two feet belo~ the surface. A minimum of two

feet of fractured concrete will be removed and the hole filled

with topsoil. since this topsoil will be hand placed, no

scarifing will be need, the feoter holes will then be seeded and

mulched

within a suitable time (7-14 days) period prior to seeding,

topsoil will be distributed on all areas to be reclaimed. During

this time period, the topsoil ~ill be allowed to settle and

attain equilibrium with its na~ural environment. This procedure

will be followed for all areas in which facilities such as road

beds, mine pads, and building ~ites are to be abandoned. The

Permittee does not anticipate ~he use of any SUbstitute or

supplemental topsoil. Should ~uch use become necessary, the

Permittee will notify the regu~atory authority of such proposed

use and will provide informatiDn on the suitability of the

supplemental or SUbstitute top~oil.

To minimize compaction of the topsoil following redistribution,

travel on reclamation areas will be limited. After topsoil has

been applied, surface compactiJn will be reduced by ripping to a

suitable depth. This operatio~ will also help prepare a proper

seed bed and protect the ~;~:;, 7'·,~":'tt;.r'::w.~?,-':·D'~I~:'l;.~g-ra"'-r--t'~oi~. ,fx~.m wind and water erosion. ,! Jlt~'Q~((JJruP)OJR-~~,::,'r" "

EFfr"ECTIY·~. ~l,,-, <,' .. 2,'.>,,- ; , _ E. , • J 11; I MAR 231993 J

I jT--------.J ~ I ~ ,. UTAH DllVlSION Oa, GAS AM> MINING

ADDITION TO ._- J

section 4.6 Page 4-36 Sect on 4.6.4 Page 4-36(a)

Date 01/20/93

4-36(a)

•

•

,

T ble 4.6-1

TOPSOIL STOC PILE SEED MIXTURE

Smooth Brome (Lincol 3-4 lbs/acre

Timothy or Meadow Fo tail 1-2 lbs/acre

Lewis Flax (native) 1-2 lbs/acre

Orchard Grass 1-2 lbs/acre

Slender Wheatgrass 2-3 lbs/acre

Cicer Milkvetch 2-3 lbs/acre

NOTE: This is a seed mixture r commended in a report on vegetation

and plant community analysis in compliance with U.S. Forest Service

requirements. Yellow Sweet Alfalfa were replaced with

Slender Wheatgrass and Utah in 2008. The seed mix may

need to be altered based on see availability. Modifications will

be based on consultation with personnel.

INCORPOR/\T~:-D

n~ i' of ,: 2008 ,,- ,-_ , l

Div. of Oil, G2: -" ]

Revised: 7/2008

4-37

Topsoil redistribution procedures will ensure an approximate

uniform thickness consistent w~th the proposed reclamation plan as shown on Table 4.6-4.

The Permittee will exercise c~re to guard against erosion during

and after application of top!~oil and will employ the necessary

measures to ensure the stabil~ty of all redistributed topsoil by

mulching. All areas to be res~eded will be mulched. All mulching

will be applied after the ar~as have been reseeded. Slopes of

3h:1v or less will be mulche~ with straw. Slopes steeper than

3h:1v will be treated with weod fiber mulch. All mulch will be

anchored by chemical tacifer~ or crimping. All mats will be

anchored with 6" staples on 2 foot centers. Mulching will be

applied at the rate of 2,00 P pounds per acre. All mulching,

anchoring techniques and appl~cation rates will be determined by

using BeTA at the time of re(~lamation. For this permit renewal

(1992), 2,000 pounds of wood fiber, plus 140 pounds of conweb

tacifer has been used to ~etermine the reclamation bonding

calculations. Any rills or cullies deeper than nine (9) inches

which form in areas which have been regraded and topsoiled will be

regraded and reseeded. The d~sturbed areas adjacent to any rills

or gullies which have been filled, regraded or otherwise

stabilized, will be reseeded cr stabilized accordingly.

1

_ J

CHANGE TO TEXT

section 4.6 Page 4-38 section 4.6.4 Page 4-38 Date 01/20/93

4/38

l

I i

•

•

•

4.6.4.1 Coal Mine waste Disposal si e

Canyon Fuel Company, LLC proposes 0 perform the revegetation of the waste

disposal area in successive stages wi a stage representing the portions of the

site that have been filled to design When a stage is completely full,

that area will be graded subsoil a d topsoil will be placed over the waste

material. Topsoil derived from the 1992 AML project and aspen or sagebrush

vegetative type areas will be placed n the fill area. Additional soil will be

brought into the disposal site from t e mine site stockpile (which contain soil

from non-National Forest areas), si ce previous mining activity has rendered

insufficient topsoil available at the ite. Imported topsoil will be analyzed for

N-P-K, pH, EC, and texture to assess suitability as a topsoil medium.

The road cut and fill slopes will be reclaimed when construction is completed.

The cut slopes will be hydro-seeded here the soils and sub-soils will support

growth. Cut slopes without sufficient soils and sub-soils will be topsoil-ed and

hydro-seeded. Fill slopes not cove ed by waste rock will be topsoil-ed and

hydro-seeded .

There is not enough subsoil cover mat rial available on site to cover the entire

7.68 area disturbed with 16 inches of aterial. As has been the practice in the

past, subsoil cover material will be

up the difference between what is

requirements of the plan. The

urchased from a commercial source to make

n site and what is needed to meet the

material will be tested using the

Division's Guideline #6 requirements. The entire disturbed reclaimed site will

have 12 inches of topsoil added over the subsoil cover material. To meet the

requirements of R645-301-553.252, the site will have a minimum of 20 inches of

non-potentially toxic or acid forming aterials placed immediately under the 16"

of subsoil. Waste rock is routinel sampled for potentially toxic or acid

forming materials. If any unsatisfac ory waste rock is found it will be placed

where it will have a minimum of 48" of total non-toxic or acid forming materials

over it. Analysis of the Scofield to soil and subsoil are shown on pages 4-38e

and 4-38f.

Revised: 5/16/08

INCORPORATED

r'" 1 : 2008

Div. oJ Oil, G8.S c1 r

4-38(a)

•

•

All non-toxic, non-combustibl material, as well as the top soil and subsoi~will come from a s ngle source, and will be tested for toxicity, ~id/base accounting, selenium, boron and complete soil analysis, as outlined on Tabl 1 of the Division's quideline for topsoil management. Topsoil w 11 be applied to the final layer of moderately-compacted rock te material and subsoil cover. Typically, the coal mine wast which will be disposed of consists of 36.00 percent less than 1/4 x 0 inch material and 28.6 percent between 1 x 1/2 and 1/2 x 1/ inch (Exhibit 3). Therefore, the loss of topsoil into the pore space of the fill should not be a

problem. The

.. r::~~ L~Vi

......... _--- ~-~-.-~ --." ... -. ~ .1

, ~.-j •• • 11 '.1::. 't". I

'--.---~~:':J ..... _____ ._

4-38 (b)

R05/02/94

Table 4.6-4

*1.69 acres does not include acreace of topsoil pile; total disturbed area

including topsoil pile area equal 2 36 acres

Sub-Total 1.69 4090

CHANGE TO TEXT

Paqe 4-3S(c) Table 4.6-4 Paqe 4-3S(c) Date OS/10/9

4-3S(c)

INCORPORATED

JUl 2 9 2010

Div. of Oil, Gas & Mining

Acreage

Overland Conveyor

Route .39

NOG Bleeder Shaft 1.7*

TABLE 4.6-4 (Continued)

TOPSOIL REDISTRIBUTION

Planned

Depth

Inches Cubic Yds

12 ____ ~6~2~9 (Private)

19 4,388 (USFS)

*1.7 acres is only the disturbed area.

approximately 3.0 acres.

The permit area encompasses

Swens Canyon Ventilation Facility

North Slope I 5.4**** 12

GRAND TOTAL 65.70

48,056 (Private)

90,607 (USFS)

138,663**

*Both of these areas are located on National Forest lands and 78,593 cubic

yards of National Forest topsoil was removed and stored from these area. The

topsoil over and above that planned for redistribution that came from

National Forest lands will be redistributed on National Forest lands, as

directed by the Manti-LaSal National.

**81,852cubic yards are need for revegetation on National Forest lands and

43,966 cubic yards are needed for revegetation on private lands. As

indicated in Section 2.11, there is 79,281 cubic yards of topsoil available

for revegetation on National Forest Lands and 44,526 cubic yards of topsoil

available for revegetation on private lands.

***2,198 cubic yards are available at the Scofield site. The remainder of

the topsoil will come from the portal yard stockpile or other outside source.

****5.4 acres does not include the acreage of the topsoil pile and areas not

disturbed in the permit area. Plate 3.2.4-4F illustrates topsoil (-8,755 cu­

yds.)and subsoil removal area. Only topsoil is included in the table

although approximately 6,345 cu-yds of subsoil will be stored in the pile as

well.

Revised: 5-27-16 4-38(d) INCORPORATED

JUL 1 9 1Ut

Div. of Oil, Gas & Mining

••••

•

COMMERCIAL TES INO. ENGINEERING CO. GENeRAL OFAC£S: 1919 SOUlH HIGHLANO AVE.. SUITE LOMIAAO. IUJNOIS eol48. TEL: ,...953-9300 FAX: 7(8.913-9301

February 17, 1994

UTAH FUEL COMPANY P.O. Box 719 Helper Ot 84526

,.

Kind of sample SOIL reported to u.

Sample taken at XXXXX

Sample taken by UTAH FUEL COMPANY

Date sampled November 9, 1993

Date received December 2, 1993

Results:

Analy.i.

PAJWq'lD

Maximum Acid Conductivity Neutralization Potent Nitrate Saturation Percent Paste pH Nitrogen, Kjeldahl Organic Carbon Total Texture - tClay Texture - tSilt Texture - tSand Boron, B Calcium, Soluble MAngesium, Soluble Sodium, Soluble Extractable Selenium Sodium Absorption Ra 0

Sodium, Exchangable

Results are reported basis.

--~ •• ~ .--.. ••• y -~~.-.-

M __ • _ .. _~ __ ._ ...... _

OVER 40 BRANCH LA8ORATORIES STRATEGICALLY LOCATED IN PRINCIPAL

crt DO •

PlEASE AOORESS AU CORRESPONDENCE TO: 4885 PARIS. &.200. DENVER. CO 80231

TEL; (303) 373-4m FAX: (303) 3734191

Sample identification by CTE HUNTINGTON

SAMPLE NO. SCOFIELD TOPSOIL

REStlLTS

0.78 590 12.75 18.2 38.46

7.37 1500

2.39 24.00 36.00 40.00

0.26 3.6 1.2 0.28

<0.002 0.18 0.6

T/1000 T umho/cm T/1000 T mg/Kg t s.u. mg/Kg t t t t mg/Kg meq/L meq/L meq/L mg/Kg

mg/Kg

indicated, on an as received

4-38e

MINING AREAS. TIDEWATER AND GREAT LAKES PORTS. AND RIVER LOADING FACIUTIES

F45I072194 OriQInai WaMrmattced For Your P,otection TERMS CONDfT1ONS ON REVERSE

COMMERCIAL TES INO. ENGINEERING CO. GENERAl. OFRCES: 191. SOUTH HIGHLAND AVE.. I.OM8AAO.1UJNOCS 801". TEl; JOI.853.83OO FAX: )01.853.1301

~.-• February 11, 199.

trrAH FUEL COMPANY P.O. Box 719 Helper at 84526

," Kind of sampla raportacl to u. SOIL

Sample taken at xxxxx

Sample taken by trI'AH FUEL COMPANY

Date samplad November 9, 1993

Data recaivecl December 2, 1993

Analysis

PARAMETER

MAximum Acid Potenti Conductivity Neutralization Potent a1 Nitrate Saturation Percent Paste pH Nitrogen, Kjeldahl Organic Carbon Total Texture • 'Clay Texture - tSilt Texture - tSand Boron, B Calcium, Soluble Mangesium, Soluble Sodium, Soluble Extractable Selenium Sodium Absorption Rat"o Sodium, Exchangable

PLEASE ADDRESS AU CORRESPONDENCE TO: 41115 PARIS. 8-200, OENVER. CO 80231

TEL: (303) 373-4712 FAX: (303) 373-4711

Sample idantification by trrAli FUEL COMPANY

SAMPLE NO. SCOFIELD TOPSOIL (Subsoi 1 )

72-265348

RESULTS llHW

0.71 T/1000 T 380 umbO/OIl 16.75 T/1000 T

8.90 mg/Kg 38.44 " 1.84 s.u.

900 mg/Kg 1.58 t

26.00 " 36.00 t 38.00 t

0.30 mg/Kg 2.5 meq;L 0.82 meq/L 0.31 meq/L

<0.002 mg/Kg 0.24 0.6 mg/Kg

Results: Results are reported basis.

indicated, on t!ftII-!I'~"""""'''''''''''--'''-- ."

• ,.-.--.~-. -,-.- --.-.-------1-----

-f"""-------__ "_"---I

199:1 .. --------------_.....J--'

. - .) ~

" .. '--' "f~ ~ ~ . ~'i;) ;

4 ""'f38f i

I I

Respectfully COMMEAC

Ii. OVER.to BRANCH LABORATORIES STRATEGICALLY LOCATED IN PRINCIPAL

F"'85I072194 Original W81811'n81ked For Your ProtectiOn TEAMS CONOlllONS ON REVEASf

ThT~O~1Q)O::;- -:: ··:V·-.. ~jD JU. ~ 'V RUl '-- - _ OJ • __ -A

EFFECt J v~:.:

I 0 lCj.~l _~ ... f·(J· RNGcO.-· _0

'I & .... ,

~:.ii.Aii;;;;iiii~' ~ONOn... GAS A.~ MINDD

• moderately-compacted final layer f fill should not, on the other hand,

be an impermeable barrier which w 11 redirect drainage.

The topsoil will be spread 12 i ches thick in a manner to provide a

roughened surface so that seed mulch can remain during germination

and initial growth of the Topsoil depth was determined from

soil pits in the reference area. jRipping the surface prior to planting

seeds may be needed to provide the necessary roughened surface. Any

rocks that are on the surface ill be left in place to aid in the

vegetation effort.

The potential for upward migratio of salts is unknown for the top soil

and cover material. The commits to analyze this material for

electrical conductivity sodium co tent and sodium absorption ratio prior

to revegetation efforts.

Fertilizer rates may change after the soil's analyses of the topsoil are

4It completed. The Permittee plans to apply 100 pounds per acre of available

nitrogen. Mulching will be as outlined in Section 4.7.2. The

Permittee's consultant has that phosphorous and potassium

concentration based upon Skyline' data should be adequate in the aspen

soils, and, therefore,

potassium or phosphorous

topsoil before it is seeded t

topsoil will be an aspen type, no

nded. The Permittee plans to test the

determine the type and amount of

fertilizer or neutralizer require. The soil's analyses will determine

the following components: (a) micro-nutrients, (b) potassium, (c)

calcium, (d) magnesium, (e) phos

salinity, and (h) soil texture.

(f) nitrogen, (g) soil pH and

The majority of drainage diversio ditch DD-17 will not be reclaimed as

it expected to be fully revegetat d and in stable condition. However,

the lower portion will be recon tructed to direct any drainage into

4It the natural drainage channel. IN CORP ORF .. TED

Revised 12-2007 4-39 r

• The Scofield Waste Disposal sit

undisturbed by mining in

surrounding area were evaluate

of Agriculture (USDA), Natura

(NRCS) WEB Soil Survey utility

in Appendix Volume A-2 Volum

approximately 18-20 inches of t

was expanded into areas previously

7. The Disposal site and the

using the United States Department

Resources Conservation Services'

See the Clement Soil Survey located

2) . Based on the soil survey,

horizon will be salvaged from

the proposed Waste Rock Expans'on area. Assuming the entire 5.13

acres of the proposed expansio are eventually disturbed, a total

of approximately 13,822 cu-yds of topsoil (AlB horizon) would be

salvaged and used in reclamatio . These volumes will not be stored

all at one time however, as ex ansion will only take place on an

as-needed basis. The topsoil volumes will be identified in the

field based on abundant root m color, and general depth.

No topsoil pile currently exi ts at the site, so all suitable

topsoil will be salvaged as th site is expanded. The expansion

will be incremental, with cont mporaneous reclamation activities

• being conducted simultaneously. It is estimated that no than more

than approximately 3-acres wil be without topsoil at one time.

•

A stockpile of topsoil will Ii ely not exceed approximately 4,500

cu-yds because it will be in contemporaneous reclamation.

Topsoil storage will be conta' ned in areas identified on Plate

3.2.8.2. As stated in other sections of this M&RP the topsoil will

be stored, marked with appropri te signage for protection, and used

during reclamation. The placement will be stable,

protected from wind and through prompt establishment

of vegetative cover. Sedime control measures such as silt

fencing or straw bales will be 'mplemented temporarily at the base

of pile until vegetation is e tablished. Should other storage

areas be necessary, the site wi located in an UDOGM-approved

location. Should a topsoil defi it exist at final reclamation, the

necessary topsoil will be impor ed to the site .. Tr:rD. INCORPOR1~;'K c:~

Revised 12-2007 4-39a

•

•

At reclamation, cover will con

will be preceded by approximat

the 18-20 inches of topsoil

feet of the best available,

non-toxic and noncombustible terial, in a manner that does not

impede drainage from the derdrains. As has been done

historically, additional subso'l cover will be purchased from a

commercial source to make difference between what is on site

and a total soil/subsoil dep h of approximately 28-inches. This

is consistent with both R645- 01-553.252 and placement of cover

over portions of the Waste Rock site that were previously

disturbed.

Skyline tests waste rock material every 2,000 tons for acid and

toxic-forming materials.

be either acid or toxic-form

rock analyzed has been found to

in the history of the mine.

Selenium and Acid Base Potenti 1 (T.S ABP) are two parameters for

acid and toxic-forming tracked by Utah oil Gas and

Mining. The Selenium range's well within acceptable limits

(unacceptable- ~ 0.15 ppm soil). Unacceptable levels for Acid Base

Potential are less than or equ I to 0 tons CaCO 3 /1000 tons

overburden - which is an indic

potential. The Waste Rock has

the C horizon. The

combustible material. Waste

of the materials neutralizing

etter neutralizing potential than

k is also considered to be non­

samples associated with North

Lease are representative of samples surrounding the Lower

O'Conner B Seam. Mining the Lease area will require mining

through a graben zone. This material is not intended to be

included in the Waste Rock site and will be stored underground.

Based on the 2006 Clement Soil urvey, the proposed expansion site

has approximately 38 in. (97 cm) of soil above hard-packed C

horizon. A large portion of t cover is BC or C material

(starting at 14 in. and 22 in. respectively). Suitable topsoil

was found to have a thickness r nge of 14-22 inches.

Averages and ranges of selected arameters from waste rock analyses • C,:c;c'r,?C?,,2:T':::~J

Revised 2-2008 4-39b

performed from 2005 through 20 7 (Total samples; 53) are presented

~ in Table 4.6-5. Coupled with these data are averages and ranges

for the same selected paramete s for the C horizon (Total samples

; 2) from Clement 2006 Soil Su ey, holes SP-l and SP-2 (depth for

~

Table 4.6-5

Avg. for Waste Rock '05-'07 7.98 1.41 2.91 12.49 73 0.70 0.84 0.66 <0.02 45.3 Range for Waste <0.02-Rock 7.3-8.7 0.27-4.42 0.96-8.45 8.1-29.4 <0.2-1.74 0.05-1.3 0.39-1.23 0.08 11.6- 142 Avg. for C Horizons 6.8 0.205 0.215 16.5 1.22 0.01 0.24 <0.02 5.4 Range for C Horizons 6.7-6.9 0.19-0.22 0.20-0.23 16-17 13 0.14-2.3 0.01 0.21-0.27 <0.02 4.5-6.4

both profiles; 38 in.). omparison demonstrates the waste

rock is slightly different f the C horizon material but the

difference should not have an effect on revegetation

efforts.

• EC- The higher salts (EC) i compared to C horizon (0.21 if any, on the vegetation vegetation report. The was saline. Of the literature common species of the veget tolerant to salinity (up to resides in the upper horiz slightly higher salinity in

the waste rock (1.4 dS/m) dS/m) should have little effect, ecified in the Mt. Nebo June 2007 e rock is considered to be non­vailable, several of the more tion report are moderately 6 dS/m). The majority of roots

and would not be affected by a the waste rock.

• SAR- Sodium Adsorption Rati (SAR) is higher for waste rock (2.91) than the soil (0.22) but still not within a range that

Revised 12-2007 4-39c

•

•

•

•

•

•

•

would have a significant e feet on growth and water penetration. The limit un er the Guidelines for Management of Topsoil and Overburden- Utah Oil Gas and Mining for SAR is > 15.

Soil Nitrogen- Total Kjehl combination of organically is much greater in waste r the same value (0.08 ppm) of SP-2, illustrating that is an improvement over the inorganic nitrogen, N-Nitr that the range for both wa are not significantly diff vital nutrients in the soi

ahl Nitrogen (TKN) is the bound nitrogen and ammonia. TKN ck; however, the waste rock has s the more nutrient rich A horizon with respect to TKN the waste rock C horizon. The comparison of the te, does not accurately express te rock and C horizon overlap and rent. Nitrogen is one of the most but the C horizon is an

insignificant source for p ant nutrients. The A horizon of both SP-l and SP-2 has 5 t 10 times greater concentrations of N-Nitrate than the C ho izon or waste rock. The C horizon starts at 18 in. and 23 in which is well above the current practice of 28 in. of cove material over waste rock. The current practice would pro ide a greater quantity of nutrients in the cover mat rial because of the greater depth, and the same or greater co centration of nitrogen in the waste rock.

Boron- Boron (B) is a micr nutrient and the Mancos Shale in eastern Utah can contain b ron at high levels. The high B levels in the soil can cau e plant toxicities when >5 ppm B. Both the waste rock and so'l are at low concentrations and are within the limitations set by the Guidelines for Management of Topsoil and verburden.

Field Capacity and Wilting waste rock has a slightly decreased average field capacity (waste rock = 12.5%, C horizon = 16.5%) nd wilting point (waste rock = 7.73%, C horizon = 12.5%) han the C horizon. However, the difference between field c pacity and wilting point is to some extent more important. The difference indicates the amount of water available or plant uptake and it is slightly greater in waste rock (was e rock = 4.76%, C horizon = 4.0%), making the waste rock a be ter source of water at depth.

Root Zone- Waste rock is c pacted throughout the placement process for the purpose of stabilizing the waste and

~~, r ',~ ~ c ~. ~ ~ .. ,:,"7'::-:: ~ [1\ .~"A .. .;., c, , __ " .. t. _..-I

Revised 12-2007 4-39d ........ ,/ I.-Jo '-'" .-- ..-'- -"

""':" ~~ ("iL Gas & Mining

•

•

•

increasing storage efficie cy. This compaction does not form an aquitard or restrict th penetration of deep rooted vegetation. Lab analysis f the waste rock indicates that the texture of the unconso idated waste is mostly sand with some sandy loam, clay loam, and loamy sand. Most vegetation in both reference areas me tioned in the Mt. Nebo report have shallow root systems and h ve the majority of their root systems in the A and B hor'zon (approximately 18-23 in.), making the material at dep h less relevant.

Consultation with former Skyli e personnel, Keith Zobell, indicated the currently approv d plan (12in. topsoil, 16in. subsoil) was developed by hims If and DOGM personnel Henry Sauer. Zobell and Sauer dug soil pits at the site to develop the current plan. Their findings (and the current plan) are consistent with the findings of the Clement So'l Survey.

Areas of the Waste Rock Site p below in Figures 4.6.4-1 and 4 success of the current plan an after seeding. Woody species the future Skyline decides to the purpose of selling.

Revised 12-2007

eviously revegetated are shown 6.4-2. The pictures represent the

were taken approximately 5 years ave not been planted in case in ine and wash the waste rock for

4-3ge

•

•

I • c

Revised 12-2007 • ~..J .. J ___ .)

4-39f

,. """ ..

• 4.6.5 South Fork Breakout

Before any top soil was removed, all oody vegetation was removed from the project area. Soils are basically a andy loam mixture and have been classified by the S.C.S. as Uinta Fam'ly loam/tozc Family fine Sandy loam. Core sampling in the area shows that he soils vary in depth from 24 - 36+" in depth .

•

L C PO ATED

• Revised 12-2007 nin 4 - 39g

•

•

•

After the vegetation had been re oved , the A & B ho rizons of so il were

remove d using a track hoe . The track hoe s tacke d the soil where a

front-end loader picked it up and transpo rted it to the storage area on

the abandoned temporar y Forest Se vice road and on the small open ing at

the mouth of the canyon where t e knob was -removed . The fro nt - end

loader spread the soil in approximately two foot lifts . By handli ng

the s o il in this manner , it wil l not be compacted in the storage area

and the roots of the revege tat i n plants will penetrate the entire

depth of the soil . This will a 10 the soil to maintain itself as

viab le top soil to be used durin final reclamation . It is es timated

that approximate l y 2 , 990 cubic yards of topsoil was removed and stored .

As subsoils were encountered , t ey were used to bring the anc illary

access road up to grade . not used as road wa .s also stored on

the small opening at the mout of th e canyon where the knob was

removed. It is estimated that approx imate ly 2 , 840 cubic ya rds of

subsoil was remove d . Approxima ely 1,820 cubic yards of the subsoil

were used in the road fill and he remaining 1 , 020 cub i c ya rds were

stored for final reclamati on .

As the coal in the coal seam was encountered , it was hauled o ut so as

to eliminate the poss i bility of spontaneous combustion occurring .

On ce the constructi on was camp ete , a ll of the d i sturbed areas were

seeded and all the roads that re on Nat i onal Forest Lands and the

disturbed areas were water barr d and seeded with the mixture shown on

Table 4 . 6 - 1 . A combinati on of s' 1 t fences and strawbales were used t o -

treat surface run - off from the isturbed area of the ancillary road,

the breakout pad and the topsoil-subsoil storage areas until adequate

vegetation is established . The. il t f ences and strawbales were located

as needed between the disturbed and undisturbed areas to treat run - of f

from the disturbed area.

Revised 09/19/03

CORPORATED

SEP 252003

DIV OF OIL GAS & MINING

4-40

• During portal reclamation , the ncill a r y road int o the breakout site

will be reopened. The portals ill be s ealed as o utlined in Section

4 . 9 . Approximately 400 to 450 ub i c yard s of s ediment from Electric

Lake will be used as the require n oncombu s t ib l e backf ill bet ween the

portal opening and the block sea s . Two samp l e s o f the ma t er ial t o be

used as backfill were obtained and analyzed in accordance with the

parameters listed in Table 6 o f the Division ' s " Guidelines for

Management of Topsoil and Overb rden f o r Underground a nd Surface Coal

Mining ", Revised by James rwood and Dan Duce , ,ll,pril 1988 . The

laboratory data sheets are ed in Appendix Volume A- 2 in the Soils

and Vegetation section and the t 0 samp les are identified as Electric

Lake Site #1 and Site #2 .

The highwall at the breakout a ea will be eliminated by front - end ,

backhoe , or other types of tra ked or rubber tired e quipment . The

permittee will use waste rock r om the mi ne 's temporary waste rock

• storage site to return the portal a r ea to approx imate original contour.

•

The waste rock has been analyz d in ac c o rdance with th e parameters

presented in Section 4 . 4 . 5 of this chapter and the resul ts a re included

in Appendix Volume A- 2 in the So il s and Vegetation section . The

samples from the temporary w .ste rock si te to be used In the

reclamation of the South Fork Po tals are listed on the data sheets as

samples 11 through 13. The resu ts of the analyses indicate the waste

rock is not toxic - or acid- f Th e use of waste rock for

reclamation is necessary since 1 , 000 o r mor e c ubi c yards of

coal and coaly soil was reported y removed fr om the si t e during portal

construction . It is anticipated based on an August 2003 survey of the

portal area used to create the t pography and c ross-sections presented

in Drawing 4 . 6 . 5-1 , that 1 , 300 r mo r e cub i c ya rds of was t e ro ck c o u l d

be used to reclaim the site al d r eturn i t t o AOC .

Revised 09/19/03

INCORPORATED

SEP 252003

nlv or 0 GA~ MIl\.JING

4-41

• The waste rock will be buried b y a mi n i mum of f i ve feet of subsoil and

topsoil (The init i al five feet of cover should all o w for de e p gouging

of the topsoil surface whil e ma nt a i ni ng at leas t f o ur f eet o f cover

over the waste rock . ) The wa st rock and overlying subsoils wil l be

placed in not more than 2 f oo t l ' ft s and compact ed by mu l tiple p asses

of large tracked and rubber t' red con struction e quipme nt (do zer,

trackhoe , front - end loader, et . ) .

Runoff from the portal canyon access r oad wi l l be treat ed during

construction activities . This wi l l require th e temporar y use o f

gravel , silt fences, a nd/o r straw bale d i kes in low a r eas and whe r e

runoff from the road o ccurs . These temporary t re a t ments will be

eliminated/removed or , if app i cab l e , u s ed as pa rt of t h e final

reclamation treatment faciliti s .

Subsoil from the storage areas wi 1 b e uniformly p l ace d in the breakout

• area and then topsoil will be ni fo rmly spread over the a r e a . The

ancillary road up the side c the b re a kout a r ea and t h e

temporary road used for s o i l s t o r age wil l t h e n be retu r ned t o

approximate original contour of urrounding terrain . Th e r oa ds will be

brought back to as close to o rigi a l con t o ur as possib l e wi th t he least

amount of new surface disturban No new cut s l o pe s will be c reated

and existing ones will be smoothed to the extent poss i b le . As

requested by the Forest Serv i ce , VJater b ar s will be p l aced as n eeded t o

dissuade vehicular trave l after eclamati on . The sur f a c es of t he roads

in the portal canyon will als o deep go u ge d to encourage

runoff retention and eliminate 1 n g , un interrupt e d runoff f l ow pa ths. '

Silt fences and / or straw bale d i ~ es will b e p la ced at loc ations where

concentrated runoff occurs from ecl a i med are a s s u c h as t h e downstream

end of the water bars on the r ec a ime d Fo r e st Serv ice road o r natural

drainage crossings on any of the acce ss t h e r o ads . Th e a rea where the

• Revised 09/19/03

CORPORATED

SEP 252003

DIV OF OIL GAS & MINING

4-4 1(a)

• knob was , if used for reclamati n , will also b e c ontoured t o b lend in

with the surrounding terrain .

As described in Section 4 . 7 . 8 , dl l ~oils will be spread ane! trea ted in

a manner to provide a roughene d s ur fac e so that seed , f ert iI i ze r a nd

mulch can remain during germ' nati on a n d initia l gro YJth o f th e

seedlings . The permittee inte1 d s t o r o ugh e n al l r ec l a i med s urfaces

using deep gouging or pock - moc kin g technique s . Ho we ver , r a king

surfaces prior to planting ma y a so be needed t o provi d e t he necessary

roughened surface in areas tha ca nno t be d eep goug ed .

As described previously , subs o i s we r e used t o bring th e porta l ac c ess

road up to grade . Subsoils were use d as fill ac r o ss the narro w canyon

to allow the access road to cro s from the south side o f the canyon to

the north side wh e re the portals are located . A culvert was p laced in

the bottom of the drainage prior to b ac kfilli ng wi th subs o i l . During )

• final reclamation , these subs oi ;::; \",il l lJe u s ed f o r r e cl a ma t i o n o f the

•

portal area and the culvert 1 be removed . Upon r e moval of the

subsoils , the newly exposed inage s lopes will be mu lched, deep

gouged , and reseeded . The gougi g wi l l b e frequent en o ugh t o eliminate

extended runoff flow paths th t c ou ld re s ult in e r o si on . I t is

anticipated that the gouges will be at l e ast 12 -inc hes dee p a nd should

not fill naturally until vegeta ion has been established . The deep

gouging of the slope will be e x t nded f r om th e t o p o f th e slope t o the

channel edge. Straw , vegetati v e debris , and rock , if available , will

be incorporated in the lower-mos g ouge s adj acent t o th e channel floor

to increase the durability of the s t ream channel walls while vegetation

is being re - established .

The channel floor exposed aft r r e moval of the c ulve rt will be

roughened sufficiently to impede .u r face fl ows and bring th e n a turall y -

Revised 09/19/03 INCO PORA ED

SEP 252 3

DIV OF Oil GAS

4-4\ (b)

•

•

•

occu rring channel d eposits to the surface . If the ch annel deposits do

not appear to be la r ge enough to c t as r ip- rap then vegetative debr is ,

such as aspen logs a nd branches, r othe r na tu ral debri s \!Jill be placed

in the channel to impeded su rf ce flows .

The wide flat area in the exist' n9 r oad loca ted ju s t to th e north of

the mouth of the portal can yon YJ ' 11 be used as a truck turnout to al low

vehicles to pass one anothe r on

the mouth of the South Fork

approximately 50 feet wide by 5

he narrow acce ss road that beg ins at

of Eccles Creek . Thi s area i s

feet long , o r 0 . 06 ac re s . Prior to

th e beginning of reclamati on co ::truction ac tivities , the upper 1 2 -

inches of soil in this area wil be removed and s t o r ed on tl e uphill

side of the wide area and prot cted from traf fic with ~ ilt fence .

After the completion of the porta reclamation activities, t h e subsoil s

in the 0 . 06 acre turnout area wi 1 be r ipped to a depth of a t least 12-

inches and the soils initiall y r moved and st o red will be .spread b ack

over the area . The area will

using the grasses and forb es s

following final portal reclamati

b e mulched , gouged , and reseede d

mix lis ted in Table 4 7-1 . Also

the road from the gate a t the mouth

of th e South Fork of Eccles Canyol to the truck turnout area de scribed

above will be ripped

lis ted in Table 4 . 7 - 1 will a ls o

road .

The grasses and forbes seed mi x

e used t o reseed th i s s e c tion of the

The silt fences and straw ba l es used to treat runoff fro~ rl istu rbed

areas will be maintained reclamati on vegeta ti on has been

adequately established and artifi c i al erosion contro l i s no longer

neces sary . After a determinati n has been made that the artific ial

erosion contro ls are n o longer neede d , the silt f ences wi ll be removed

by cutt ing the fabric off at gr und level and the suppo r ting stakes

Revised 09/19/03 INCORPORATE. <'1-41 (c)

SEP 252 3

DIV OF OIL GAr--

• pulled from the ground . Stra bales will rema in in-place and be

a l lowed to naturally decompos e .

The dis t u r bed are are I ate d tot h e::; 0 I J t h For k po r t a lsi sO . 9 6 a c res .

Th i s 0 . 96 acres includes the acc ss road up the side canyon! including

the portion where tops o il is st red, t he portal pad , and the area at

the mouth of the canyon where to soi l and subsoil is s tored . The truck

turnout area is within an existing p r e -mi ning road and does not

represent addi tional dis tu rban e . The road that traverse s from the

mouth of the South Fo rk of Ecc les Canyon continues for some distance on

Forest lands beyond the mouth 0 the side canyon in which the portals

are located . However , access t this road is cont ro ll ed by a gate at

the mouth of the South Fork of Ec le~. Canyon . l::",s described prev i ous l y ,

the mine intends to rip an d seed the road from the gate at the mouth of

the canyon to the lower end of t e truck turnout . The port i on of the

road where topso i l is stored at he mouth of the portal canyon will be

• reclaimed by pocking or gouging, mul c hing , a nd seed ing . No fu r ther

reclamation activit i es are plan ed on the pre - existing road south of

the topsoil stockpile area .

•

The t ruck turnout is approximate yO . 06 acres . The road from the truck

turnout to the mouth of the Sout Fork o f Eccles has approximate l y 1

acre of surface area . Theief o e , approximate l y 1 . 06 acres of road

between the south end of the t ru c <. turnout will be recla imed ; the tru ck

turnout by ripping the subsoil t relieve compaction , respread ing the

upper 12 - inches of soi l previousl? moved aside , mulch ing , deep gouging ,

and seeding , and ripping and reseeding the remainder of the Sou th Fork

road from the truck turnout to the road ' s northern te r minus .

Rev i sed 09/ 1 9/03 INCORPORATED 11-4 1 (d)

SEP 252003

DIV OF Oil GAS & MI ING

4.6.6 Winter Quarters Ventilation Facility Topsoil Redistribution

Topsoil redistribution will commence once removal of all facilities and modification of the pad site to achieve the approximate original contours (AOC) is completed. Distribution of the topsoil will take place immediately prior to re-vegetation activities to minimize erosion. Topsoil will be placed with a bulldozer or comparable machinery to approximate grade. Following topsoil placement to approximate grade, a trackhoe or comparable machinery will deep-gouge or roughen the surface prior to commencement of re-vegetat i on activities.

4.6.7 NOG Bleeder Shaft Topsoil Redistribution

The topsoil redistribution will start one-year after the shaft has been backfilled to allow for settling, any facilities have been removed, and the earthwork has regarded the road and pad to the approximate original contours (AOC). Re-vegetation activities will immediately follow the distribution of topsoil to , minimize erosion. Topsoil will be placed with a bulldozer or comparable machinery to approximate grade, followed by deep-gouging of the surface. Mulch, matting or other best technology currently available (BTCA) will be used as a top-dressing once seed has been distributed.

4.6.8 Swens Canyon Ventilation Facility Topsoil and subsoil Redistribution

As with previous sites, both subsoil and topsoil redistribution will commence once the shafts have been adequately backfilled, and the area of the pad site has been roughly re-graded, subsoil will be re­distributed to achieve approximate original contours (AOC). Prior to topsoil placement, any highly-compacted areas such as roads will be ripped prior to topsoil placement. Topsoil will then be placed with a bulldozer or comparable machinery to achieve approximate grade. Once topsoil is placed, a trackhoe or comparable machinery will deep-gouge or roughen the surface. Prior to commencement of re-vegetation activities, the topsoil will be analyzed for available nutrients nitrogen, phosphorus, and potassium per DOGM 2008 guidelines to evaluate whether any soil treatment is necessary. Following seed distribution, and any remedial soil treatments, topsoil and seed will be retained using a hydro-mulch, certified weed-free straw, erosion control blankets, a combination or other best technology currently available at the time. These procedures apply to both areas associated with the vent facility and any disturbance associated with the power line installation.

Revised: 5-27-16 4-41(e)

INCORPORATED

JUL 1 9 lUI,

Div. of Oil, Gas & Mining

4.7 REVEGETATION PLAN

Planting and revegetation of 11 disturbed areas will take place

following grading and/or top oil redistribution procedures and

will include, as necessary, the addition of remedial soil

treatments. Fall seeding is preferred. A suitable, permanent,

diverse vegetative cover wil be established on all reclaimed

areas and be capable of self regeneration and plant succession.

At the Scofield disposal si reclamation activities will be

conducted on areas that filled to design capacity. All

vegetation species will meet he requirements of applicable utah

and Federal seed, poisonous and noxious plant; and introduced

species laws or regulations. All revegetation will meet the

requirement of R614-301-356.232 and R614-301-356.233. The

proposed reclamation schedul

RECLAMATION TIMETABLE. The

major aspects of the proposed

is presented in Section 4.2

ollowing subsections describe the

evegetation plan.

4 . 7.1 Species and nt per Acre, Portal, Train Loadout

and Conveyor Be ch Areas

A suitable permanent, effecti and diverse vegetation cover of

species native to the area, or suitable substitutes, will be

established on all affected ar as.

After the initial constructiO j disturbance, the species selected

for use and the numbers or amo nts per acre depended on the steep­

ness and exposure of the slop s to be revegetated. South facing

slopes Ih:3v (or lower) and f at areas were treated with seeding

efforts at the rate as shown in Table 4.7-1. South facing slopes

at angles of 2h:1v to 1h:2v w re treated with hand-set plantings

of sagebrush (Artemisia rabbitbrush (Chrysothamnus

nauseosus), and snowberry or red elderberry at not less than 1

meter (3.25 feet) intervals, ith interspacings being seeded by

the species shown in Table 1.7-1. The woody species stocking

density for south facing slopes were established at approximately

1 meter intervals with minor a justments for terrain .

4-42

North fa~ing slopes, which ar

seedlings of Englemann sprue

of 2.5 meters in all

mixtures spread on the

shaded, were planted with hand-set

and/or subalpine fir at intervals

Table 4.7-2 lists the seed

acing on the north-facing slopes.

Riparian zones were revegetat d with handset seedlings of yellow

willow, blue spruce, Woods and American red raspberry at

intervals at 1/2-1 meter. lists the seed mixture

spread on the inter-spaces. Steep slopes which have been

rip-rapped were not revegetate .

4.7.2 Final Reclamation Seeding and Tillage, Portal and

Train Loadout Area and Other Small Areas

Seed mixture for final

4~7-5, 4.7-6 and 4.7-6A.

Seeding of the south-facing

are shown on Tables 4.7-4,

lopes (lh:3v) or lower flat areas

will be conducted using a cyc one spreader. For slopes less than

2h:lv, seeding will be a complished using a hydro-seeder.

Plantings of shrubs and trees will be hand-set to ensure a plant

cover of a permanent nature.

Tillage practices on level round and on slopes flatter than

lOh:lv will include leveling, il1ing and mulching.

Planting on slopes less than lOh:lv will be accomplished by

drilling seed with a mechanical drill. Slopes between lOh:lv and

MAR 2 3 1993

4-43

1. 5h: Iv will be seeded by ha d broadcast and manually buried by

raking. Mulch will be applie over the hand broadcast seed. The

Permi ttee elects to revegeta e areas wi th s lopes greater than

I.Sh:lv without topsoil; sue areas will be treated to handset

plantings in basins filled w'th topsoil and with hydro seeding,

and then mulched as d in Section 4.6.4. Where the

substrate consists of ings of stone, no attempt will be

made to revegetate.

Revegetation on slopes steepe than 3h:lv will be undertaken as

soon as possible following topsoil placement, mainly during

spring and early fall, with fall seeding preferred. Where too

steep for topsoil planting will be followed

immediately after the area becomes available during construction

activities. Revegetation on slopes less steep than 3h:lv will

follow topsoil placement. A 1 tree and shrub transplants will

only be planted in the spring.

The Permittee will create a n tural appearance during post mining

reclamation by extending tree and shrub planting past the toes of

slopes. However, linkages will be left short or extended

slightly as necessary to provide an irregular appearance.

Grasses and forbs will be ree tablished from seed. Trees will be

planted as seedlings. The will additionally place

rocks, originally designated s wind barriers, at the bottom of

large rock cuts in an info way so as to provide a more

natural appearance. All -facing slopes will be seeded with

the south-slope mixture, an all north-facing slopes will be

" ~j

j ~

~' UTAHDMsroN OIL. GAS AND IV1LNING

/vlAR 2 3 1993

4-44

I I ~ j ! I i J

1 i t

All riparian areas will

shown on Table 4.7-6.

mixtures to be used on

be included in the revegetatio

egetated with handset seedlings as

4.7-4 and 4.7-5 list the seed

ter-spaces. Rip-rapped banks will

process where physically possible.

Noxious plants invading the d"sturbed areas will be controlled by

hand grubbing and/or approved erbicides. Surveillance will be

f/iAR 2 3 1993

UTAH Drl/lS10N O~ GAS AND MINING

4-44(a)

maintained annually during th period of liability.

type for each disturbed area i shown in Table 4.7-7.

Acreage by

4.7.3 Revegetation,

Conveyor Bench

and Reclamation of the

Revegetation, stabilization a d reclamation of the conveyor belt

slopes have been evaluated the middle of each growing

season, during the first five

and composi tion studies were

placed on slopes at the time

random numbers was used to

acceptable techniques have be

and composi tion of disturbed

conducted annually from

regulatory authority.

after construction when cover

feasible. Erosion pins were

f reseeding operations; a table of

location. Statistically

in determining percent cover

area. Revegetation analyses were

to 1985, and reported to the

ep slopes (60%+) have continued to

slough, which has precluded otal revegetation on these slopes.

The Permi ttee has developed special revegetation plan for the

conveyor bench slopes th have not been successfully

revegetated. This complete evegetation plan, as developed by

the S.C.S., is included in V lume A-2 and is directed at final

reclamation. This special revegetation plan covers four

treatment areas, three areas along the conveyor bench and once

area at the RRLO.

treatment areas:

The plan utlines six practices for the four

(1) apply 40-60 Ibs/AC of N2 in late fall or early spring;

(2) provide drip irrigation to existing shrubs;

(3) plant new shrubs ea h year (area 4 to also be planted

with douglas fir, i addition to the shrubs);

(4) provide irrigation for new plants on area 1-3;

(5) use in-line fertilization; and

.,

j MAR 23/993 4-45

(6) broadcast a light application of grass/forb seed each year.

In addi tion to the six three experimental trials are outlined:

(1) different rates of f rtilizer application;

(2) cut aspen to see if esprouting can be encouraged; and

(3) establish a plant aterials trial to determine plant

adaption.

Along with mine personnel, t plan is visually evaluated each

year by sese Results of the annual evaluation will be included

in the annual report to the To date (through 1991) I

practices 1, 2, 3, and 6 been utilized. Practice 4 is

inherent into practice 2, as the mine uses miniature sprays

instead of a drip system. P actice 5 has not been used, since

slow release fertilizer pel ets were used when planting the

shrubs. All experimental tr als have been conducted, with the

following evaluations:

Exp. 1 (conducted in 1989) - drought conditions precluded any

significant results Further trials deferred until a

better climatical pattern occurs;

Exp. 2 (conducted in fall of 1988) no results have been

observed. Re-evaluate in next three to five years; and

EXp. 3 defer using fertilization until slow release

pellets are used up

The final reclamation is to 1 ave the conveyor bench intact. The

current condition of the con ey~r bench is an area that is well

drained with drainage being teated with silt fences and/or straw

bales. The bench itself becoming well vegetated and is

functioning as a safety bene to prevent rolling material from

2!

4 4S(a) i.~--___ --.J

:-vifJlVLS10N On.. GAS AI . ~ NDMINING

rolling onto SR264. The revegetation plan is planned to

establish the necessary vegetction for final reclamation. During

final reclamation, the conve]or will be removed along with the

supporting structures. The only areas requiring treatment will

be the disturbed areas whele the supporting structures were

located. These small areas ~ill be revegetated as outlined in

Section 4.7.1 and 4.7.2.

4.7.4 Irrigation, Portal & Train Loadout Areas

Since the species used for reclamation were known for their

survival characteristics, i was felt that application of

ADDITIONS lQ I I TEXT

4-45(b)

additional water will not be needed. If irrigation is needed, an irrigation

plan will be developed at that time and submitted to the Division of Oil, Gas

and Mining tor approval. The special revegetation plan (see Section 4.'1.3) tor

__ the_conve_llOr_YOute_does __ include_some_drip_irrigation_for_establishment.

iJ. 'I.!:J Monitoring Procedures

All areas of final revegetation will be qualitatively evaluated on an annual

basis. In addition, shrub survival will be quantified using permanent transects

for the first three years after planting. Woody plant density and total living

cover will be estimated during the third year (and fifth year on areas with 10

year liability). Woody plant success standards will meet the requirement of

R645-301-356.231 & R645-301-356. 232. Shrub density will be determined for

individual areas prior to cessation of mining in consultation with DOGM 1 I J

biofogist and DWR to enhance wildlife hab~tat where appropriate.

For bond release, data will be collected and submitted using sampling techniques

approved in the Division "Vegetation Information Guidelines" Appendix A. These

data will be from those communities disturbed and for established reference

areas which will be used for comparison. Vegetative parameters to be measured

are: cover, density, productivity and species composition. Sampling of the

approved reference area and revegetated area will occur for the last two years

of the liability period and will meet sample adequacy tests for 90 percent

confidence level with a 10 percent change in the mean.

A minimum of the following data will be provided: 1) canopy cover by species

and total canopy cover excluding trees, 2) productivity by life form, and 3)

density of woody species by life form (trees and shrubs).

provide results

Revised 8/15/2016

The Permittee will

4-46

INCORPORATED 11/28/94

Division of Oil, Gas & Mining

INCORPORATED

SEP 0 2 tlrn

Div. of Oil, Gas & Mining

of statistical analyses showing similarity between disturbance areas and

reference areas.

The Permittee has ins~ted all seeded areas at the end of each growing season

Lo determine the success of the seeding program for a period of at least five

Yl;!dU::i (1.1;;!t-.:J.dlllclLllJ 1J y~dl. S l - !J ).

Any area not achieving 90 percent original cover in the first five years are

investigated to determine the possible failure cause(s) so steps can be taken

to establish the desired permanent vegetation.

The Permittee has monitored the vegetative reference area to determine if the

reference areas have been subjected to heavy animal use or have been

significantly alfered by subsidence or other man-inducrd degradation. If the

reference ' areas I are subsided or subj ect to subsideljlce the Permittee will

quantitatively monitor the reference areas. During the last two years of

mining, prior to the initiation of final restoration efforts, reference areas

will be evaluated to determine the adequacy of the reference area vegetative

parameters. If damage is such that the reference area is no longer viable, an

additional reference area proposal will be submitted to the regulatory authority

for approval from existing reference areas from baseline studies in appendix A-

2 or from areas representative of the baseline area.

The Permittee understands that the extended period of liability is ten years,

unless site-specific data can be submitted which justifies a five-year period,

beginning after the last period of augmented seeding, fertilizing or other

mechanical practice and that the revegetated areas will be monitored the last

years of liability and comparisons made with reference areas. On-site

climatological data will be evaluated at the beginning of f i nal reclamation to

determine the liability period. The length of the liability period will be

established based on the conditions outlined in R6l4-~01-820.3l0.

Revised 8/15/2016 4-47

INCORPORATED

SEP 02 nrp Div. of Oil, Gas & Mining

INCORPORATED

Division of Oil, Gas & Mining

• 4.7.6 Soil Testing, Port 1 & Train Loadout Areas

The Permittee tested the topsoil before it was seeded, after

initial construction, to de ermine the type and amount of

fertilizer or neutralizer re uired for seeding at that time.

Soil analyses measured the fol owing components:

• Micro-nutrients

• Potassium, Calcium, Magne

• Phosphorus

• Nitrogen

• Soil pH and Salinity

• Soil Texture

Chemical analyses for

soil extracts with DTPA

absorption analyzer. Ammoni

I ,

ium

trients was conducted by testing

and measured by use of an atomic

acetate was used to extract

potassium, calcium and magnesi m for atomic absorption analysis.

~ Phosphorus determination was by using sodium bicarbonate

extraction and colorimetric

used for determination of

determined by using a Bou

The Kj eldahl method was

nitrogen. Soil texture was

hydrometer method (sodium

herametaphosphate dispersing a~ent). Soil pH was determined on a

1:1 soil/water mixture test4d with an electrode pH meter.

Sa 1 ini ty was ana lyzed by USingl a Wheatstone conducti vi ty cell on

an extract of each soil sampl These analyses correlated with

the consultant's recommendati n that 100 pounds per acre of

available nitrogen be applied ring this initial seeding.

4.7.7 Scofield Waste Roc Disposal Site

The disturbed area affected the disposal operation will, at

the request of the property representative, be leveled

off and reclaimed to native angeland for subsequent use as a

corral. The drainage diversio ditch will be left as constructed

as it will be fully revegetated and in a stable condition.

4-48

The revegetation of the waste disposal area will be in successive

stages wi th a stage represen ing the portions of the si te that

have been filled to design c pacity. When a stage is completely

full, that area will be grad d and topsoil will be placed over

the waste rock as outlined in Section 4.6.

Revegetation will be accom lished by the orderly placement,

scarification of the topsoil, and seeding during the late fall.

The potential for upward mig ation of salts is unknown for the

topsoil and cover material. The Permittee will analyze this

material for electrical conductivity, sodium content, and sodium

absorption ratio prior to rev getation efforts.

Fertilizer rates and applic tions are discussed in the soil

preparation and fertilizer pI n (Section 4.5).

The species to be planted a d the rates per acre are shown on

Table 4.7-6A.

The seeds will be sown by h nd (broadcast) and a mulch will be

placed atop the seeded surfac as outlined in Section 4.7.2. No

:/,' 2 3 1993

-, ON OIL, GAS AND MININa

p 09/Z8/92L

4-49

than 1. 5h : Iv. Revegetation success will be evaluated. All ditches and retaining

walls will be maintained until the vegetation success standards of R614-301-356 are

met. No reclamation is planned for the access roadway at the request of the property

owner's representative.

The livestock permittee through the owner has requested that the sedimentation pond

not be reclaimed. If, over a period of time, it shows that the pond holds natural

runoff water and will be beneficial for livestock and wildlife use, it will not be

removed. However, for planning and bonding purposes the sedimentation pond is to

be removed and reclaimed (Map 4.16.1C). In the event the pond is not removed, Map

4.16.1B illustrates the reclamation work.

4.7.8 South Fork Breakout

After the area has had the soils redistributed, as outlined in Section 4.6.5, the

site will be revegetated. The aspen site will use the seed mixture shown on Table

4.7-4 while the spruce-fir site will use the mixture shown on Table 4.7-5. Following

the distribution of topsoil, the area will be evenly covered with certified weed-

free straw mulch. The soil with the straw cover will then be deep gouged. The

straw will be incorporated in the soil during the deep gouging acti vi ties. The

appropriate seed mix will then be hand-broadcast and/or through the use of an

appropriate hand-held mechanical device at the prescribed rate of application.

Fertilizer rates and applications are discussed in the soil preparation and

fertilizer plan (Section 4.5).

Information submitted in 2012 demonstrated the South Fork of Eccles Creek Breakout

area qualified for Phase II bond release (See Vegetation Sampling for Phase II Bond

Release in South Fork Canyon, 2011, Mt. Nebo Scientific, Inc. - Appendix A-2 Volume

2). To insure Phase III bond release, Skyline conducted husbandry practices and

planted additional woody species as a rate of 1,800 to 2,000 plants per acre in

2012. Table 4.7-8 outlines a list of recommended woody species (tublings) based on

Dr. Patrick Collins review of the site. The additional woody species were necessary

because they were not planted originally due to an oversight.

In 2017, the road and topsoil area were approved for full bond release to allow

logging as approved by the US Forest Service. See plate 3.2.11-1 for details

James Canyon Area

Refer to Section 2.7 for a discussion of the revegetation

James Can yon Project area . Refers t :ldnS0J11S !?!J.]j l a'nd 4- 20

information pertaining to the project.

Revised 10-13-17

NOV 1 6 2017 4-50

[liv. O¥ Oil, Gas &. ~'v~ining

the

4.7.9 . Winter Quarters Ventilation Facility (WQVF)

Refer to both Section 2.7 and the Mt. Nebo Vegetation report located in Appendix A-2, Volume 2 for a discussion of the vegetation for the WQVF. The

interim and final revegetation seed mixes for the WQVF area are listed in Tables 4.7-SA through 4.7-SC. Reclamation success standards are based on the

reference area(s) identified in the Mt. Nebo report. Noxious plants invading

the WQVF permit area will be controlled by hand-grubbing, and/or approved

herbicides. Surveillance will be monitored annually during the liability period.

4.7.10 NOG Bleeder Shaft

Refer to both Section 2.7 and the Mt. Nebo Vegetation report located in Appendix A-2 Volume 2 for a discussion of the vegetation of the NOG Bleeder Shaft site.

Portions of the area were previously disturbed and re-vegetated, while other

portions are undisturbed. Both the interim and final re-vegetation seed mixes are listed in Tables 4.7.-10A and -lOB, with the areas seeded being top-dressed

mulch, straw, or matting when the seed is distributed. Reclamation success standards are based on the reference areas identified in the Mt. Nebo report.

Noxious weeds will be controlled during the liability period. Sediment control

structures used during construction such as silt fencing and straw bales will remain in place for one year after construction and will be removed anytime

thereafter. Erosion control blankets, wattles, or straw bales will be used to

control erosion during interim vegetation establishment.

4.7.11 Swens Canyon Ventilation Facility (SCVF)

Refer to both Section 2.7 and the Mt. Nebo Vegetation report located in

Appendix A-2, Volume 2 for a discussion of the vegetation for the SCVF. The

interim and final revegetation seed mixes for the SCVF area are listed in

Tables 4.7-11A, and 4.7-11B, respectively. Following topsoil and subsoil

handling outlined in Section 4.6, seed distribution, and any remedial soil treatments, seed will be retained using a hydro-mulch, certified weed-free

straw, erosion control blankets, a combination or other best technology

currently available at the time. Reclamation standards are based on a

combination of the reference area identified in the Mt. Nebo report, and the recommendations within the report. The area has been mapped as crucial

summer range for deer and elk by the Utah Division of Wildlife Resources

(DWR). Consequently, a pre-set woody species value of 2,500 plants per acre is currently proposed for a revegetation success standard at the proposed

disturbed Sagebrush/Grass area. However, that may be re-evaluated at bond

release if an increased percentage of forbs and grasses is determined more

desirable for the post-mining land uses. A modification in the woody-species

will be based on consultation with USFS, DWR, DOGM, and mine personnel.

Noxious plants invading the SCVF permit area will be controlled by hand-grubbing, and/or approved herbicides. Surveillance will be monitored INCORPORATED annually during the liability period.

Revised 5-27-16

JUL 1 9 2UJl·

Div. of Oil, Gas & Mining 4-50 ra j

Table 4.7-1

SEED MIXTURE South-facing slopes of 1h:3v or lower and flat areas

Species a) Rate b)

(Lbs PLS/Ac)

Grasses

Bromus marginatus (Mountain brome)

Elymus spicatus (Bluebunch wheatgrass)

Elymus glaucus (Blue Wildrye)

Poa pratensis (Kentucky Bluegrass)

Forbs Lathyrus lanszwertii (Thickleaf peavine)

Geranium viscosissimum (Sticky geranium)

Lupinus alpestris (Mountain lupine)

Shrubs and trees (handset at 1 m intervals)')

Populus tremuloides (Quaking Aspen)

Symphoricorpos utahensis (Mountain snowberry)

Artemesia tridentata (Big Sagebrush)

Total

a) Depending on commercial availability, species can be substituted by a qualified

botanist or range specialist

b) Rates based on broadcast seeding methods

c) Containerized shrubs may be used

Revised 5-27-16 4-51

2.00

2.00

2.00

0.50

4.00

1.00

2.00

13.50

INCORPORATED

JUL 1 9 1U'1'

Div. of Oil, Gas & Mining

Species a)

Grasses

Table 4.7-2

SEED MIXTURE North-Facing Slopes

Bromus marginatus (Mountain brome)

Poa pratensis (Kentucky Bluegrass)

Forbs

Arnica cordi/olia (Heart-leaf arnica)

Osmorhiza berteroi (Sweetroot, spreading)

Geranium viscosissimum (Sticky geranium)

Lupinus alpestris (Mountain lupine)

Lathyrus lanszwertii (Thickleaf sweetpea)

Shrubs and trees (handset at 1 - 2.5 m intervals)')

Symphoricarpos utahensis (Mountain snowberry)

Engelmann spruce (Engelmann spruce)

Abies lasiocarpa (Subalpine fir)

Total

Rate b)

(Lbs PLS/Ac)

2.00

0.50

0.50

0.50

1.00

2.00

4.00

10.50

al Depending on commercial availability, species can be substituted by a qualified

botanist or range specialist

bl Rates based on broadcast seeding methods

01 Containerized shrubs may be used

Revised 5-27-16 4-52

INCORPORATED

JUL , 9 lUJ

Div. of Oil, Gas & Mining

Species a)

Grasses

Table 4.7-3

SEED MIXTURE

Riparian Habitat Seed Mixture

Elymus trachycaulus (Slender wheatgrass) (on terrace areas)

Bromus marginatus (Mountain brome) (on terrace areas)

Deschampsia cespitosa (Tufted hairgrass) (along bank areas)

Poa pratensis (Kentucky Bluegrass)

(along terrace areas and bank margins)

Shrubs and trees (handset at 1/2 - 1 m intervals)c)

Salix lutea (Yellow willow)

-rooted cuttings 1/2 m interval (on banks and rip-rap areas)

Picea pungens (Blue Spruce)

- 1 m intervals (tublings) (on terrace areas)

Rosa woodsii (Woods rose)

- 1/2 m intervals (tublings) (on bank areas)

Rubus idaeus (American red raspberry)

- 1/2 m intervals (tublings) (on rip-rap areas)

Total

Rate b)

(Lbs PLS/Ac)

3.00

3.00

2.00

2.00

10.00

a) Depending on commercial availability, species can be substituted by a qualified botanist or range specialist

b) Rates based on broadcast seeding methods

c) Containerized shrubs may be used

Revised 5-27-16 4-53

INCORPORATED

JUL 1 9 ltJl

Oiv. of Oil, Gas & Mining

Table 4.7-4

SEED MIXTURE South to West Facing Slopes

Species a)

Grasses

Elymus lanceolatus (Streambank wheatgrass)

Elytrigia dasystachya (Thickspike wheatgrass)

Bromus marginatus (Mountain brome)

Phleum pratensis (Timothy)

Poa pratensis (Kentucky Bluegrass)

Forbs

Achilliea millifolium (Yarrow)

Artemisia ludoviciana ('Summit' louisiana sagewort)

Linumm lewisii (Lewis flax)

Melilotus officinalis (Yellow sweetclover)

Penstemon strictus ('Bandera' rocky mountain penstemon)

Shrubs and trees

Amelanchier alnifolia (Sacatoon serviceberry)

Artemisia tridentata vaseyana (Mountain big sagebrush)

Rhus trilobata (Squawbush)

Rosa woodsii (Woods rose)

Symphoricarpos utahensis (Mountain snowberry)

Total

Transplants c)

Chrysothamnus nauseosus albicaulis

(Whitestem rubber rabbitbrush)

Populus tremuloides (Quaking Aspen)

Sambucus cerulea (Blue elderberry)

Rate b)

(Lbs PLS/Ac)

#/acre

4.0

4.0

5.0

0.5

0.1

0.1 0.1 1.0

2.0

0.5

1.0

0.2

3.0

1.0

2.0

24.50

250.0

400.0

400.0

a) Depending on commercial availability, species can be substituted by a qualified botanist or range

specialist

b) Rates based on broadcast seeding methods

c) Containerized shrubs may be used

Revised 5-27-16 4-54 INCORPORATED

JUL 1 9 lUI

Div. of Oil, Gas & Mining

Table 4.7-5

SEED MIXTURE

North to East-facing slopes

Species a)

Grasses

Elymus lanceolatus (Streambank wheatgrass)

Bromus marginatus (Mountain brome)

Festuca ovina (Hard sheep fescue)

Poa pratensis (Kentucky Bluegrass)

Forbs

Achilliea millifolium (Yarrow)

Aster chilensis (Pacific aster)

Lupinus sericeus (Silky lupine)

Melilotus officinalis (Yellow sweetclover)

Osmorhiza occidentalis (Sweet anise)

Penstemon strictus ('Bandera' rocky mountain penstemon)

Shrubs and treesc)

Sambucus racemosa (Red elderberry)

Symphoricarpos utahensis (Mountain snowberry)

Total

Transplants c)

Abies concolor (White fir)

Picea englemanii (Engelmann spruce)

Potentilla fruiticosa (Woody cinquefoil)

Rubus idaeus (American raspberry)

Rate b)

(Lbs PLS/Ac)

#/acre

3.0

6.0

1.0 0.2

0.1 0.1 2.0 1.5

2.0 0.5

1.0 2.0

19.40

200.0 400.0 100.0 100.0

a) Depending on commercial availability, species can be substituted by a qualified botanist or range

b) Rates based on broadcast seeding methods

<) Containerized shrubs may be used

Revised 5-27-16 4-55

INCORPORATED

JUL 1 9 1111,

Div. of Oil, Gas & Mining

Table 4.7-6

SEED MIXTURE

Shrub Supplement for Riparian Zone

to be used in addition to the South and North Slope mixtures

Species a) c) #/acre

Comus stolonifera (Red-osier dogwood)

Mahonia repens (Creeping Oregon grape)

Salix spp. (Wllow cuttings)

200.0

400.0

2000.0

aj Depending on commercial availability, species can be substituted by a qualified botanist or

range specialist

cj Containerized shrubs may be used

Revised 5-27-16 4-56

INCORPORATED

JUL 1 9 2Ult

Div. of Oil, Gas & Mining

Species a)

Grasses

Table 4.7-6A

SEED MIXTURE

Waste Rock Disposal Area

Paseopyrum smithii (Western wheatgrass)

Elytrigia dasystaehya (Thickspike wheatgrass)

Bromus marginatus (Mountain brome)

Poa pratensis (Kentucky Bluegrass)

Forbs i Artemisia ludoviciana ('Summit' louisiana sagewort)

Linumm lewisii (Lewis flax)

Melilotus officinalis (Yellow sweetclover)

Penstemon strietus ('Bandera' rocky mountain penstemon)

Astragalus cieer (Cicer milkvetch)

Total

Transplants c)

Chrysothamnus nauseosus albieaulis

(Whitestem rubber rabbitbrush)

Artemisia tridentata vaseyana (Mountain big sagebrush)

Rosa woodsii (Woods rose)

Rate b)

(Lbs

PLS/Ac)

4.0

4.0

6.0

0.1

0.1

1.5

1.5

0.5

0.5

18.20

#/acre

200.0

1000.0

500.0

aj Depending on commercial availability, species can be substituted by a qualified botanist or

bj Rates based on broadcast seeding methods

cj Containerized shrubs may be used

Revised 5-27-16 4-57

INCORPORATED

JUL 1 9 2Ul,

Div. of Oil, Gas & Mining

-------------------------------,---------------------------------.

Table 4.7-7 • The acreage and seed mixture of each dis urbance area is as follows:

•

Seed Mixture

Loadout South Fork

(including transplant area)

North Slope

Riparian

Portal Yard South Slope

(including transplant area)

North Slope

South Slope

(already disturbed)

Water Tank and

Well Pads

Conveyor Route

Waste Rock

Disposal

South Slope

Soutr. Slope

Waste Rock Seed Mix

Contempora~eous Reclarlation 2.64

South Fork

Breakout

CHANGE TO

~ew Expansion

South Slope

North Slope

5.04

Table 4.7-7 Page 4-58 Table 4.7-7

•

Acreage

10.52

3.30

~

13.86

10.92

16.37

2.:.l.l 36.40

.26

8.97

7.68

.3

~

~

68.13

TEXT

Page 4-58

1.

76

24

-----100

30

-45

~

100

100

1CO

100

31

100

Date 08/11/93

4-58

R8/27/98

Table 4.7-8

Suggestions for Containerized Plants for Revegetation in South Fork Canyon

at the Skyline Mine in Carbon County, Utah

Scientific Name

Abies lasiocarpa

Chrysothamnus viscidiflorus

Chrysothamnus nauseosus

Lonicera involucrata

Pice a engelmannii

Populus tremuloides

Ribes aureum

Ribes viscosissimum

Ribes cereum

Sambucus racemosa

Symphoricarpos oreophilus ·Species used wil be dependent on commercial availability. Substitutions possible if reviewed beforehand if reviewed by a qualified botanist or range

specialist.

Revised 5-27-16

Common Name

Subalpine Fir

Low Rabbitbrush

Rubber Rabbitbrush

Black Twinberry

Engelmann spruce

Aspen

Golden Currant

Sticky Currant

Wax Currant

Red Elderberry

Mountain Snowberry

4-58(a)

INCORPORATED

JUL 1 9 lU'1

Div. of Oil, Gas & Mining

•

•

•

Table 4.7 - 8A

Interim Revegetation Seed Mixture for ~he Winter Quarters Ventilation Facilitv. Species a) Rate b) Seeds/ff

Elymus lanceolatus Elymus smithii

Elymus trachycaulus Hedysarum boreale

Poa pratensis

TOTAL a) Depending on commercial availabil ity, species can b substituted by a qualified botan ist.

b) R~tes h~sed on seedina methods

Revised: 9-24-09

(# PLS/Ac\

4.00 14.14 5.00 14 .46

4 .00 14.69 10.00 7.7 1

0 .30 14 .99

23.30 66.00

INCORPORATED

JUl- 2~( 2010

Div. of Oil, Gas & Mining

•

•

•

Tab l e 4 .7-8B

Final Revegetation Seed Mixture for thl. Riparian

Communitv at the Winter Quarters Ven ilation Facilitv. Species a) ~ate b) Seeds/ft2

'# PlS/Ac) FORBS Aquilegia caerulea

Geranium viscosissimum

GRASSES (or Grass-likes) Agrostis sfolonifera

Carex microptera

Carex nebrascensis Elymus trachycaulus Juncus arcticus

Poa pratensis

TOTAL UJ Depending on commercial availabil ity, species can be substituted by a qualified botan ist.

b) Rates based on broadcast seeding methods .

c) W il lows from containerized , bareroot or local cuttings will be planted in a :staggered or clumped" fash ion at a average rate of one plant per 10 linear feet of

Revised: 9-2 4 -0 9

1.00 7.00

0 .05 0.40 0.50 2 .00 0.03 0 .10

11.08

8.45 8 .36

7.35 7.78 6 .1 3 7.35 7 .51 5.00 0 .00

57 .91

INCORPORATED 4- 58(b) JUL 2 9 2010

Div. of Oil, Gas & Mining

•

•

•

Table 4 .7-8C

Final Revegetation Seed Mixture for th Sagebrush/Grass Communit at the Winter Quarters Ven ilation Facilit Species a) Rate b Seeds/ft2

SHRUBS Amelanchier utahensis 6.00 3 .55 Artemisia tridentata var. vaseyana 0.10 5 .74 Ceratoides lanata 4 .00 5.05 Purshia tridentata 15.00 5. 17 Symphoricarpos oreophilus 3.00 5 .1 7

FORBS Achillea millefolium 0.03 1.91 Hedysarum boreale 5.00 3.86 Unum lewisii 0.70 4.47 Lupinus sericeus 8.00 4 .51 Penstemon rydbergii 1.50 4.54 Viguiera multiflora 0.20 4 .84

GRASSES Bromus carinatus 1.50 3.44 Elymus spicatus 1.50 4 .82 Elymus trachycaulus 1.00 3.67 Poa pratensis 0.10 5 .00 Poa secunda 0.20 4.25

TOTAL 47.83 69 .98 Depending on commercial availability, species can b

substituted by a qualified botanist.

b)

Revised: 9- 24 - 0 9

'NCORPORATEO

JUL 2 9 2010

D\v. of Oil, Gas & Mining 4-58 (c )

TaDle 4.7-8D

Suggestions for Containerized Plants for Revegetation in South Fork Canyon at the

Skyline Mine in Carbon County, Utah

Scientific Name*

Abies lasiocarpa

Chrysothamnus viscidiflorus

Chrysothamnus nauseosus

Lonicera involucrata

Picea engelmannii

Populus tremuloides

Ribes aureum

Ribes viscosissimum

Ribes cereum

Sambucus racemosa

Symphoricarpos oreophilus

* Species used will be dependent on commercial availability . Subst i tutions possible if reviewed befo rehand by a qua l ified botanist.

Revised: 7-9-12

Common Name

Subalpine Fir

Low Rabbitbrush

Rubber Rabbitbrush

Black Twinberry

Engelmann's Spruce

Aspen

Golden Current

Sticky Current

Wax Current

Red Elderberry

Mountain Snowberry

INCORPORATED 07/31/12

Division of Oil, Gas & Mining

4-58(d)

Table 4.7-9A

Interim Revegetation Seed Mixture for the Winter Quarters Ventilation Facility

Species a) Rate b) Seeds/ft2

(Lbs PLS/Ac)

Elymus lanceolatus (Thickspike wheatgrass) 4.00

Elymus smithii (Western wheatgrass) 5.00

Elymus trachycaulus (Slender wheatgrass) 4.00

Hedysarum boreale (Utah sweetvetch) 10.00

Poa pratensis (Sandberg bluegrass) 0.30

Total 23.3 )

14.14

14.46

14.69

7.71

14.99

66.0

I I

a) Depending on commercia) availability, species can be substituted by a qualified botanist or range specialist

b) Rates based on broadcast seeding methods

Revised 5-27-16 4-58{b)

INCORPORATED

JUL 1 9 llfJ

Div. of Oil, Gas & Mining

Table 4.7-98

Final Revegetation Seed Mixture for the Riparian Community at the Winter

Quarters Ventilation Facility

Species a)

Forbs

Aqui/egio caeru/eo (Rocky Mountain columbine)

Geranium viscosissimum (Sticky geranium)

Grasses

Agrostis st%nifera (Creeping bentgrass)

Corex microptera (Smallwing sedge)

Corex nebraskensis (Nebraska sedge)

E/ymus trachycou/us (Slender wheatgrass)

Juncus orticus (Mountain rush)

Poo pratensis (Kentucky bluegrass)

Total

Rate b) Seeds/ftz

(Lbs PLS/Ac)

1.0

7.0

0.05

0.40

0.50 2.00

0.03

0.10

11.08

8.45

8.36

7.35

7.78

6.13

7.35

7.51

5.00

57.93

a) Depending on commercial availability, species can be substituted by a qualified botanist or range

specialist

b) Rates based on broadcast seeding methods

Revised 5-27-16 4-58 (c)

INCORPORATED

JUL 1 9 lUI·

Div. of Oil, Gas & Mining

Table 4.7-9C

Final Revegetation Seed Mixture for the Sagebrush/Grass Community at the Winter

Quarters Ventilation Facility

Species a)

Shrubs c)

Amelanchier utahensis (Utah serviceberry)

Artemesia tridentata vaseyana (Mountain big sagebrush)

Krascheninnikovia lanata (Winterfat)

Purshia tridentata (Antelope bitterbrush)

Symphoricarpos oreophilus (Mountain snowberry)

Forbs

Achilliea millifolium (Yarrow)

Hedysarum boreale (Utah sweetvetch)

Linumm lewisii (Lewis flax)

Lupinus sericeus (Silky lupine)

Penstemon rydbergii (Rydberg's penstemon)

Viguiera mUltiflora (Showy goldeneye)

Grasses

Bromus marginatus (Mountain brome)

Elymus spicatus (Blue bunch wheatgrass)

Elymus trachycaulus (Slender wheatgrass)

Poa pratensis (Kentucky bluegrass)

Poa Secunda (Sandberg bluegrass)

Total

Rate b) Seeds/ft2

(Lbs PLS/Ac)

6.0 3.55

0.1 5.74

4.0 5.05

15.0 5.17

3.0 5.17

0.0 1.91

5.0 3.86

0.7 4.47

8.0 4.51

1.5 4.54

0.2 4.84

1.5 3.44

1.5 4.82

1.0 3.67

0.1 5.00

0.2 4.25

47.83 69.99

. ) Depending on commercial availability, species can be substituted by a qualified botanist or range specialist

b) Rates based on broadcast seeding methods

c) Containerized shrubs may be used

Revised 5-27-16 4-58 ( d)

INCORPORATED

JUL 1 9 lUI

Div. of Oil, Gas & Mining

Table 4.7-10A

Interim Revegetation seed Mixture for the North of Graben Bleeder Shaft

Species a)

Forbs Achillea millefolium (Common yarrow) Rudbeckia occidentalis (Western coneflower)

Grasses Bromus carinatus (Mountian brome) Elymus trachycaulus (Slender wheatgrass) Poa secunda (Sandberg bluegrass)

Rate b) Seeds/ftl

(# PlS/Ac)

0.6 51 1 51

8 15 8 25 3 46

a)

b)

Depending on commercial availability, species can be substituted by a qualified botanist

Rates based on broadcast seeding methods

Revised: 9/18/2015 4-58(e)

INCORPOHATED

JCT 0 9 2ot~

D!v. o~ Oil, U2S ~". Mining

Table 4.7-10B

Final Revegetation seed Mixture for the North of Graben Bleeder Shaft

Species a)

Shrubs and Trees c)

Populus tremuloides (Quaking Aspen) Sambucus racemosa (Red Elderberry) Symphoricarpos oreophilus (Mountain snowberry)

Forbs Achillea millefolium (Common yarrow) Rudbeckia occidentalis (Western coneflower) Heliomeris miltiflora (Showy goldeneye)

Grasses Bromus carinatus (Mountian brome) Elymus trachycaulus (Slender wheatgrass) Elymus spicatus (Bluebunch wheatgrass) Poa secunda (Sandberg bluegrass)

Rate b) Seeds/ftl (#/ac or Lbs PLS/Ac)

(#/ac) 200 n/a

20 n/a 100 n/a

(Lbs PLS/ac) 0.6 46

1 51

(Lbs PLS/ac) 8 51 8 15 6 26 3 25

a)

b)

c)

Depending on commercial availability, species can be substituted by a qualified botanist Rates based on broadcast seeding methods

Containerized Planting as appropriate

Revised: 9/18/2015 4-58(f)

INCORPC)RATED

Div. o~ Oil, G~s & Mining

Table 4.7-11A

Interim Revegetation Seed Mixture for the Sagebrush/Grass

Community at the Swens Canyon Ventilation Facility

Species a) Rate b) Seeds/ft2

Forbs

Achillea millefolium (Yarrow) 0.06 4

Penstemon spp (Penstemon spp)

Grasses

Bromus marginatus (Mountain brome)

Elymus spicatus (Bluebunch wheatgrass)

Elymus trachycaulus (Slender wheatgrass)

Poa Secund (Sandberg bluegrass)

Total

3.00

6.00

3.00

3.00

0.50

15.56

01 Depending on commercial availability, species can be substituted by a qualified

botanist or range specialist

bl Rates based on broadcast seeding methods

01 Containerized shrubs may be used

10

22

10 10 11

67.00

Revised 5-27-16 4-58(g)

INCORPORATED

JUL 1 9 ~mt,

Div. of Oil, Gas & Mining

Table 4.7-118

Final Revegetation Seed Mixture for the Sagebrush/Grass Community at the Swens

Canyon Ventilation Facility

Species a)

Shrubs c)

Artemesia tridentata vaseyana (Mountain big sagebrush)

Krascheninnikovia lanata (Winterfat)

Mahonia repens (Creeping Oregon grape)

Forbs

Achillea mille/olium (Yarrow)

Penstemon spp (Penstemon spp)

Eriogonum ovalifolium (Cushion buckwheat)

Potentilla glandulosa (Sticky cinquefoil)

Erigeron spp (Daisy spp)

Grasses

Bromus marginatus (Mountain brome)

Elymus spicatus (Bluebunch wheatgrass)

Elymus trachycaulus (Slender wheatgrass)

Poa Secund (Sandberg bluegrass)

Total

Rate b)

(Lbs PLS/Ac)

0.50

0.10

0.25

0.06

3.00

2.00

0.20

0040

6.00

3.00

3.00

0.50

19.01

Seeds/ft2

10

4

2

4

10

8 20

16

22

10

10

11

127.00 aj Depending on commercial availability, species can be substituted by a qualified botanist or range

specialist

b) Rates based on broadcast seeding methods

c) Containerized shrubs may be used as warranted to achieve reclamation standards

Revised 5-27-16 4-58 (h)

INCORPORATED

JUL 1 9 lUI

Div. of Oil. Gas & Mining

• 4.8 HAZARDOUS & FLAMMABLE MATE IALS DISPOSAL & CONTINGENCY PLAN

4.8.1 Non-Coal waste Materials Disposal

A facility for temporary stora e of waste materials is located at

the mine site. The storage facility, as shown in Map 3.2.1-1,

has been constructed reed concrete. This main storage

facility is used for storage 0 non-coal waste materials from the

underground operations that ar free of toxic wastes, oil, grease

and other liquids. These mat rials consist basically of paper,

wood, metal and plastic produ ts. Since the drainage from the

storage facility contains toxic wastes, oil or grease

products, it enters the normal surface drainage system and enters

the sedimentation pond. A hydrant is located near the

structure.

Portable dumpster trash bins are located at the mine si te and

train loadout areas. waste products from the surface operations

~ and any oil, grease or liquid aterial containers from the under­

ground operations-are deposite directly into these trash bins.

In the course of operations, each time the temporary facility is

full, the solid waste material will be loaded into one of the

portable dumpsters and rted to a state approved sani tary

landfill area. The current d sposal site is the Price sanitary

landfill. The waste remov.al ruck will be sufficiently covered

and sealed so as to prevent 1 ss of solid waste material during

transportation.

Although no toxic waste materi Is are anticipated, if identified,

they will be stored and/or sposed of in accordance with all

applicable state and federal

4.8.2 Diesel Fuel and Gasoline and Oil Storage

• Diesel fuel and gasoline is stored in three above ground tanks

wi th a total capaci ty of 26, 00 and 4,000 gallons respectively

4-59

• (Map 3.2.1-1) .

lubricating oil

gallons total},

The oil

(6,000

waste oil

ground storage consists of:

total), hydraulic oil (4,000

( ,000 gallons total), stoker oil

(20,000 gallons total). Each of the above ground storage tanks

is located behind imperviou concrete walls which form a

containment area which will the entire contents of the

single largest tank plus su ficient freeboard to allow for

average annual precipitation

less than 5 inches of

positioned so as not to affec

storage tanks are protected

protection or other effective

with existing soil conditio

periodically to ensure that

not occur.

evaporation or approximately

reo The tanks are located and

any slope or shaft opening. The

corrosion by cathodic coat

ethods considered most compatible

The tanks will be tested

akage into the surroundings does

The Permittee has prepared and has available at the mine site a

Spill Prevention Control Plan as required to be implemented in

• the event of a spill or leakag of the stored fuels, oils or oil

products.

•

4.8.3 Explosive Magazines

In compliance with Federal an State of Utah regulations, the

explosive magazine is not located near power lines, fuel tanks,

storage areas or other possible sources of fire (see Map

3.2.1-1). Construction material for the magazine is of a

noncombustible type covered wi fire resistant material. The

construction of each structure 5 interior entails utilization of

non-sparking materials for wal s and floors. Each structure is

equipped wi th screened venti 1 tion openings near the floor and

cei ling. The structure let resistant and "Danger" signs

are located such that bullets assing through the signs will not

strike the magazine structure. Each magazine is equipped with a

security lock designed to preve t intrusion .

The explosive magazine is

underground construction and

rily used to store explosives for

ining activities. The types of

4-60

•

underground construction and mining activities could be: 1)

overcast and undercast constr~ction, 2) construction of mine

sumps, 3) crossing of fault! in the coal seam, and 4) mining

through dike. The explosive magazine is also used to store a small

amount of explosives for sUlface activities. These types of

activities could be: 1) ]~emoving building foundation, 2)

removing rocks from side hills for safety reasons, 3) excavating

foundation' for buildings thai are in rock, and 4) cleaning

plugged chutes.

4.8.4 Hazardous Materials

The Permittee has reviewed the "ReRA" and 40 CFR Part 261 list of

hazardous materials and will handle any such materials according to

subtitle C of "RCRA". Any :,.isted hazardous materials will be

stored in the hazardous waste storage building.

4.8.5 Slides and Other Damage

Any damage to roads or ot]~er surface facilities due to a

catastrophic event such as f.",oods, earthquakes, or land slides

which may have a potential c dverse effect on public property,

health, safety or the environml.nt will be reported to the Division

by the fastest means available. Remedial measures will be decided,

as appropriate, by the Permittee and the land owner and will be

coordinated with the Division for the repair as soon as practical

after the damage has occurred.

-, -----.l--__ ~----.~-

1ITJ ~"' .. ,~(\: ~ ,-. ,

L

4-61

R05/02/fJ4 ! J

----------_.---........

4.9 OPENING AND SEALING PLANS

Exploratory Holes, Bore Holes, and Wells

In accordance with the approved plan for exploratory drilling

during 1979, all drill holes upon abandonment of drilling

operations were cemented witr. an approved slurry. The slurry

mixture was made using 5.2-5.5 gallons of water per bag of cement.

An appropriate slurry device WeS lowered to the bottom of the hole

and sufficient slurry pumped through the device to fill 200 feet of

hole. The device was then raised 200 feet and the process

repeated. The holes were thus completely plugged from the bottom

to the collar using this me ~hod.

approved exploratory drilling plan,

As stipulated in the 1979

drill hole locations were

appropriately marked. There are presently no plans to transfer any

exploratory or monitoring weJ Is to use as water wells by the " Permittee.

Temporary or permanent abandor.~ent of water and monitoring wells

will be in accordance with the State of Utah Administrative Rules

for Water Well Drillers, Divis on of Water Rights, or other agency

procedure as appropriate.

MAR 2 3 1993

OTAH DIVWONOIL. GAS AND MlNINo

ADDITION TO: TEXT

Section 4.9 Page 4·62 Section 4.9 Page 4·62 Date 02/24/93

4-62

Shafts

Skyline Mine does not have any shafts initiated permitting the Winter Quarters Ventilation Shaft (WQVF) in 2010. Should any be designed in the future, Rreclamation will be in compliance with State regulation R645-301-551 and consistent with MSHA, CFR 75.1771. Shafts or other opening to the surfa~e from an underground mine will be capped, sealed and backfilled, or otherwise properly managed, as required by the Oi vision. Permanent closure measures will be designed to prevent access to mine workings by people, livestock, fish and wildlife, and to keep acid or other toxic drainage form entering groundwater or surface waters.

Figure 4.9-B illustrates how the WQVF shafts will be reclaimed through backfilling. The bottom 50-feet of the shaft will be filled with non-combustible material as follows: starting at the bottom with large, course 6+ inch rock for approximately 20 feet (including mine area); followed by successively by smaller rock; culminating with a 5-foot bentonite layer, 5-foot concrete layer, and an additional 5-foot bentonite layer. The remainder of the shaft will be filled to the surface with pit run or other reject fill. The bottom 50 feet of the shaft has been designed to both minimize accumulation of gas and filling of the shaft with water - should either condition occur. The shaft(s) reclamation design addresses both mass stability and movement in multiple ways: grading of the fill from coarse to fine minimized movement while allowing pore space for possible saturation; the bentonite-concrete layers (~15 total feet) are utilized as both a cap and seal, providing a barrier for both saturation and mass movement; and finally, once the shaft is full to the surface, a 20-foot mound is placed over the former opening to accommodate additional compaction. The mound provides approximately an additio~al 5 percent of material for compaction. It is proposed the shaft be filled and allowed to settle for approximately one (1) year prior to completely reclaiming the WQVF pad to approximate original contours (AOC).

A shaft in the North of Graben area (NOG Bleeder Shaft) will be abandoned in the same fashion. Figure 4.9-0 illustrates the abandonment. Notable differences include the diameter of the shaft (5-feet) and the depth (~1, 400-feet). The shaft will not be lined and since the shaft was drilled using the raise-bore method, all the backfill material will need to be imported to the site.

Shafts in the Swens Canyon Ventilation Facility (SCVF) area will be abandoned in the same fashion. Figure 4.9-0 illustrates the abandonment. The notable differences are the depth(s) and diameter of the shaft(s). Cuttings from the drilling of the shaft(s) will be used in the backfill at reclamation (Blind-bore). - If the raised-bore method is used, all the material will need to be imported to the site.

Mine Entries

In compliance with 30 CFR 75.1711-2, seals will be installed in all entries as soon as mining is completed and the mine is to be abandoned. (See Figure 4.9-A for typical portal seal.) The seals will be located at least 25 feet inside the portal entry. The opening will be sealed with solid, substantial, incombustible material, such as concrete blocks, bricks or tile, or shall be completely filled with incombustible material. Figure 4.9-C illustrates a cross section of the WQVF seal. The WQVF seal

has incorporated a water-tight seal in the event water is encountered at rel'N-CO~tpaRATED

Revised: 5-27-16 4-62 (ajUL 1 9 ~Ul

Div. of Oil, Gas & Mining

(])

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VENT SHAFT

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2. CONCRETE IS MIN 2500PSI es,S" SLUMP

3 OVERFILL WILL BE ALLOWED TO SETTLE PRIOR TO RECLAMATION

.OR ... NPIPE ~w G.oLV WI

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NIT.I. . ',~.t.ILUO~aMTWjl:i~ WM.F~fIC!i~~

2 CONCRETE IS MIN, 2S00PSI CS,6"' SLUMP

3 OVERFlLL 'MLL BE ALLOWED TO SEmE FRIOR TO RECLAMATlON

~--.. _ .. """IUII·CftIU"_~~ _'RI'~~"""""'~

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/; ~

"':Z~Cu.NICJIIItN~

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VentlEscape Shaft

5-27-18

•

•

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MI NE ENTRIES

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PORT At SE AL

SECT ION VIEW

BLOCK SEAL

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'. BENTONITE MIXED WITH EARTH AS PER MANUFACTURERS RECOMMENDATIONS

2. CONCRETE IS MIN. 2500PSI eS,6" SLUMP

3. OVERFIL L Will BE ALLOWED TO SETIlE PRIOR TO REClAMATION

M~ . 1 SEEP COllAR IN CONCRETE ZONE MIN 1 SEEP COlLAR IN BENTONrreZONE

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1. BENTONITE MIXED wITH EARTH AS PER

MANUFACTURERS RECOMMENDATIONS 2. CONCRETE IS MIN, 2500PSI CS.6~ SLUMP

3. OVERFILL WILL BE AlLOWED TO SETTLE PRIOR TO RECLAMATION

MIN 1 SEEP COUAR f-I CONCRETE !ONE M .. lSEEPCOUARlNeen"""-E~

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UNDERGROuND MINE OPENING

Figure: 4.9-8 Winter Quarters Ventilation Facility

VenUEscape Shaft

.. Canyon Fuel CompanY,LLC Skyline Mines

REVISION: o

312212010

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5FT OVERFILL (FOR SETTLING)

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PIT RUN BACKFILL

CONCRETE BLOCK (8"X16") WALL PLACED WI LONG AXIS PARALLEL

TO SLOPE LONG AXIS

DRY STACKED AND WEDGED TIGHT

BENTONITE MIXED WITH EARTH AS PER

MANUFACTURERS RECOMMENDATIONS PLACED AS CONCRETE BLOCK WALL

IS CONSTRUCTED

CEMENTATEOUS GROUT

;;

50-70 LBS/CUFT

- BRATTICE FACING WI SPRAY

BULKHEAD ~ FOAM SEALED PERIMETER

WOOD POSTS (MIN. 8" DIA.)

~ ~------- WOOD LAGGING (MIN. 3" THICKNES)

Figure: 4.9-C Winter Quarters Ventilation Facility

Slope

I' ~ Canyon Fuel CompanY,LLc ~ t«:J51!01(~UTAII_ Skyline Mines

REVlSlON: o

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•

•

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Since all entries are down ip, no hydraulic seals will be

needed. Prior to installation, all loose material within three

feet of the seal area will b removed from the roof, rib and

floor. The mine entry seals will be made of solid concrete

blocks (average minimum compressive strength of 1,800 psi; tested

in accordance with A.S.T.M. C- 40-70) and mortar (1 part cement,

3 parts sand and no more tha 7 gallons of water per sack of

cement) .

Seals will be installed in

be recessed at least 16

deep into the floor. No

blocks will be at least six

and eight inches wide. The

transverse pattern. In

following manner: The seal will

deep into the rib and 12 inches

will be made into the roof. The

high except in the top course,

will be laid and mortared in a

course, each block wi 11 be

laid with its long axis paral el to the rib. The long axis in

succeeding courses wi 11 be to the long axi s block

in the preceding course. interlaced pilaster will be

constructed in the center. Th seals will have a total thickness

of 16 inches. The entry then be backfilled and sloped to

match the cut slope at the 1 entry_

During periods of temporary abandonment, the operator will

effectively barricade each inactive mine opening and

wi 11 conduct inspect ion and m intenance in accordance wi th the

requirements of 30 CFR 75.1711- .

Should the mine workings e entually fill with water where

discharge from one of the port 1 openings becomes a possibility,

discharge control structures s all be designed and constructed in

accordance with 30 CFR 75. 711. Design of these control

structures will be deferred un il final reclamation when need and

potential discharge conditions an be better evaluated.

4-64

•

•

•

4.10 SAFETY AND COMPLIANCE PRO RAM

Compliance with the requirements of the Clean Air Act (42 U.S.C.,

Sec. 7401 et seq.) and the Cle n water Act (33 U.S.C., Sec. 1251,

et seq.) is accomplished by fulfilling the conditions of a

Prevention of Significant terioration (PSD) permit and a

National Pollution Discharge El'mination System (NPDES) permit.

PSD permi t application,

project, was filed with the

1979 and approved on August

to the proposed Skyline Mines

Region VIII office on March 8,

1980. The air quality control

devices and procedures in the PSD permi t application

have been incorporated design of the Skyline project.

The control system, as incorpo ated, is presented in Section 4.22

- AIR POLLUTION CONTROL PLAN.

The Permittee's current NPDES ermit application was approved by

EPA Region VIII office gust 15, 1990 (see documents in

Volume A-I, Hydrology) Contr I measures, in the NPDES permi t

application, have been into this Mining and

Reclamation plan as those meas res governing compliance in areas

where they are duplicated addressed by other rules or

regulations.

Concurrently with the

applications with the EPA,

were filed with the appropri

Intent to Construct was

of the PSD and NPDES permit

ntical copies of the applications

state agencies. A notice of

filed with the Utah state Air

Conservation Committee and a c py of the NPDES permit application

was filed with the Utah Stat Water Pollution Committee. They

were approved on January 7, 198 and July 8, 1980 respectively.

The Permittee has incorporated procedures in its mining operation

to ensure timely reporting any spill or accident which

endangers environmental within the area affected by the

Skyline mining operation and i required by law to be reported to

state and/or federal agencies. Mine employees are instructed to

4-65

•

•

•

report any such spill or accid nt to the Mine Superintendent or a

designated representative in h's absence. The Mine Superintendent

or his representative will re ort any spill or accident to the

appropriate regulatory authori ies.

The Permittee intends to ply with the health and safety

standards required by state and federal regulations and has

incorporated the necessary tecti ve measures into the design

plan of the overall project to ensure such compliance .

4-66

•

•

•

4.11 PROTECTION OF HYDROLOGICAL BALANCE--PERMIT AND ADJACENT AREAS

The Permittee conducts all min site operations in such a way as

to minimize potential impact to surface and subsurface water

quality. water originating in or flowing through disturbed areas

is collected by a drainage con rol system and suspended material

allowed to settle in nt control ponds before being

discharged into the natural

circuiting of the natural d

minimum. Since postmining

premining use, the hydrologica

have been planned accordingly.

ainage system.

channels

will be

Changes or short

were kept to a

similar to the

aspects of the reclamation effort

The long history of mining in the area shows that past adverse

effects to water supplies coal mining activities do not

destroy the use of the water for stockwatering or irrigation.

Mining in the area sometimes t nds to improve the quality of the

water by intercepting some gro nd water and reducing its contact

time wi th underground formati ns. water pumped from the mine

augments low stream flows uring the summer months, thus

enhancing stream conditions.

4.11.1 Water Rights and R placements

The Permittee presently owns 2 8 acre-feet of water rights in the

Scofield Reservoir. Of these ater rights, water sufficient for

the Permittee's needs were xchanged for rights from wells

located near the mine site a d at the mouth of Eccles Canyon.

(See, also, discussion of water rights, Section 2.3.5.)

The Permittee will replace the water rights of any land owner, if

such a water supply is contami ated, diminished or interrupted as

a result of the Skyline mining operations. If reclamation of the

permit area proved unsuccessfu and consequently damaged existing

water rights or if mining rsely affected flow from springs

and/or seeps and damaged rights, the Permittee would

provide alternative water supp ies either from drilling new wells

4-67

•

•

•

in Pleasant Valley Canyon or by pumping wa er up the canyon from Scofield Reservoir.

Culinary water usage at the mine site qualifi s as a public water supply and will be treated to meet State of Utah primary and secondary w ter standards.

4.11.2 Monitoring Program

In order to concentrate on areas of immediat impact, surface water stations located in Eccles Canyon were sampled more frequently than hose on Huntington Creek during the initial phases of mining. (See Sections 2.3 and 2.4.)

As mining progresses toward the Huntington Creek area, sampling in this drainage has increased to more closely monitor mining im acts. The monitoring schedules in Section 2.3 reflect this intensified monitoring activity.

Surface water monitoring will continue accor ing to the monitoring schedule, presented in Section 2.3.7 and 2.4.4, throughout the mini g and reclamation operations. Postmining data collection will continue at each of the station until the reclamation effort is determined successful by the regulatory authority. Quart rly samplings will continue to be analyzed according to Tables 2.3.7-1 and 2.3.7-2 duri g the postmining period.

Water quality data collected from surface an ground water monitoring stations will be submitted quarterly to the regulatory authorit . These reports will normally be submitted electronically within 90 days of the completio of the quarterly monitoring program.

In addition to the above outlined monitoring rogram, UPDES discharge permit monitoring is conducted in accordance with the stipulated ermit conditions.

4.11.3 Water Quality Control

The ground water that is intercepted and bro ght to the surface as a result of mining operations normally has a lower dissolved solids conten than would exist if the water was to continue its downward movement through the existing sh Ie layers, picking up increased amounts of salt with distance through the rock formations. G nerally, mine water is expected to occur when pockets of perched water are interrupted and drained .. Although suspended sediment and oil and grease may increase at the mine mouth rea, these constituents will be removed by retention and sediment pond skimmers prior 0 any potential discharge to adjacent streams. As a result, operation of the Skyline Mines is ex ected to have an overall beneficial impact on water quality in the region.

4.11.4 Water Quantity - Impacts

The Blackhawk Formation, extending over th entire Skyline property, consists of interbedded layers of sandstone and shale separated by arious mineable and nonmineable coal seams. The sandstone beds are generally massive hile the shale layers are generally bentonitic, tending to swell when wet and decompose in 0 an impervious clay. Investigations at springs on the project area have indicated that the shal beds prevent significant downward percolation of

Revised 3-24-10 INCOR~ATED

JUL 2 9 2010

Div. of Oil, Gas & Mining

•

•

•

water through the Blackhawk Formation, wit much of the water entering the upper layers and surfacing a short distance away as a spring. In addition, due to the ability of the shale material to swell and decompose into an impervious lay, fractures in the Blackhawk Formation do not act as conduits but instead as barriers to pot ntial infiltrating water.

As a result of these observations, it has bee concluded that the mining activity in the Skyline Mines will have minimum adverse

Revised: 3-24-10 INCORP~~TED

JUL 2 9 2010

Div. of Oil, Gas & Mining

impacts on the quantity of water in the area. When subsidence occurs, the subsidence cracks should seal rapidly, preventing deep percolation of water and subsequent loss of springs and other water sources. The location of a particular spring may change by a few feet, but no significant loss of water is anticipated as a result of mining. In over 30 years of mining since the mine opened in1981, inflows into the mine have varied due to changes in the geology from the underlying geology. Throughout the same time period the water quantity in the Blackhawk Formation has not recorded any adverse effects due to mining.

Although the Blackhawk Formation may be saturateci above the mine workings, a relatively minor quantity of water is being encountered at each active face due to the impermeable nature of the formation and its inability to readily yield water. Water production at each active face is 10-15 gallons per minute with mine entries generally dry approximately 200 feet updip from the face. Flows of 1-2 gallons per minute occasionally continue from roof bolt holes.

Because of the westerly dip of the strata in the area, some subsurface water naturally moves from the Price River Basin towards Huntington Creek. However, because most water encountered in the mine would not be naturally discharged to the surface in the immediate area, no significant depletion will occur in the amount of water reaching either Huntington Creek or Eccles Creek.

Water quantity will remain generally unaffected due to the geological conditions in the mine area. Therefore, the Skyline Mines will have little or no adverse impact on the hydrological system.

Revised: 10-1-13 4-70

\NCORPORA1EO

JAN 0 3 20\4

0 ' Gas & Mining 01\1 01 II,

•

•

•

4.11.5 Mine Facilities Drainage Area

The original drainage plan for the mine surfa e facilities was designed by Kaiser Engineers for the Permittee. Streams crossing the mine si e are collected outside of the disturbed area and diverted into corrugated metal pipe (CMP) cu vert of adequate size for the 100 year, 24-hour precipitation event. The CMP culverts are 10 ated to transfer the upstream flow under the minesite to Eccles Creek below the minesite. Diversion channels were constructed above the disturbed area to collect the runoff from the ndisturbed areas and direct it to Eccles Creek.

4.11.6 Load-out Site Drainage

The original drainage plan for the load-out sit was designed by Kaiser Engineers for the Permittee. The creek in Eccles Canyon was iverted from its natural state to gain space. Diversion channels were constructed south 0 the disturbed area to collect runoff from the undisturbed areas and direct it to Eccles Cre k. The disturbed area surface runoff is collected and diverted to the sedimentation pond locat d adjacent to the storage silos.

4. 11.7 Portal Locations

The mine portals have been designed to ens re that water will not be gravity discharged from the mine. The portals will have a minimum n gative (in mine) slope of four percent to prevent any gravity discharge.

4.11.8 Underground Water Treatme t

The mine water encountered at the working f ce is collected in the face area and pumped to collection points located within each mine. T ese collection points (or abandoned areas of the mine)The impoundments allow some time fo suspended solids to settle. Underground water is permitted to be pumped from the Mine directl to Eccles Creek or Winter Quarters Creek when discharge parameters are met. The water is pumped from the mine into the portal are sediment pond which is the principle treatment

facility. Mechanical devices have been instal ed at collection points to screen grease and oil which might be present in the water before it s pumped out of the mine.

All of the mine workings are located down di from the entries which precludes gravity discharge. Upon abandonment of mining ac 'vities, the entries will be sealed as indicated in Section 4.9.

4.11.9 Winter Quarters Ventilation Fa ility (WQVF)

The ventilation facility design includes the 10 tions of the declined slope, exhaust shaft, emergency escapeway shaft, sediment pond and drainage plan for both the disturbed and undisturbed drainage. The pad is located a inimum of approximately 30 feet north of Winter Quarters Creek and approximately 20 feet h gher in elevation to minimize water entering the mine. The mine openings (shafts/slope) are ocate up dip of the mine workings, eliminating

Revised: 3-24-10 INCORPp-l1t'TED

JUL 2 9 2010

niv. of Oil, Gas & Mining

discharged from this location when discharge parameters are met. A Utah Pollution Discharge Elimination System (UPDES) water discharge point was added to the Skyline Mine water discharge permit in December 2009 to accommodate discharging water to Winter Quarters Creek both from the sedimentation pond and potentially future mine water discharge.

The Winter Quarters decline slope portal is at an elevation of 8120 feet which is down dip and at a lower elevation than portions of the Mine workings. To safeguard against a gravity discharge at reclamation, should the mine flood to the portal level, both the shafts and slope have been sealed and backfilled to prevent any discharge at reclamation (See Section 4.9).

4.11.10 North of Graben (NOG) Bleeder Shaft

The NOG Bleeder shaft includes a 3.0 acre bonded permit area, with approximately 1.7 acres of disturbance with a 50-ft by 80-ft pad, 784-ft road , topsoil pile, diesel storage tanks, generator, and a 5-ft diameter shaft. The site is adjacent to an existing USFS road located at the top of Granger Ridge. No pond is necessary for sediment control due to minimal disturbance. The shaft opening is located approximately 1,400 feet above the mine workings eliminating concern of any gravity discharge during the operation of the shaft.

4.11.11 Swens Canyon Ventilation Facility (SCVF) The Swens Canyon Ventilation Facility included the designs of an exhaust shaft and an emergency escapeway shaft, and a drainage plan for both the disturbed and undisturbed drainage. The majority of undisturbed drainage has been diverted around the site, while the disturbed area drainage has been minimized with a number of Alternate Sediment Control Areas (ASCAs) that eliminate the need for a sedimentation pond. The shafts are located significantly higher than the flow in Swens Canyon eliminating any chance of water from the creek entering the shaft. Similarly, the shaft is approximately 900 feet above and up dip of the majority mine workings, eliminating concern of gravity discharge during the operation of the mine. See Section 4.9 for the detailed reclamation of the shafts.

Revised: 5-27-16 4-72

INCORPORATED

JUL 1 9 ~UJ

Div. of Oil, Gas & Mining

•

•

4.12 POSTMINING LANDUSE

This section presents a detailed delineation of the abandonment

and reclamation steps to be t ken which will allow a return to

the original wildlife/grazi g (rangeland) habitat landuse

following the completion of min ng operations.

In general, the mine site area will be returned to its original

wildlife/grazing (rangeland) abitat, the conveyor route and

loadout site will be returned to the original premining use as

grazing land. The new State Highway SR-264, which has been

constructed through the permit rea, will be left in place.

4.12.1 Method of Achieving and Supporting Postmining Landuses

Table 4. 12-1 summarizes

alternate landuses. Maps

emining,

.4.2-1A,

proposed

4.4.2-1B

postmining and

and 4.7.2-1

illustrate proposed reclamatio areas and types. The following

presents, in detail, the steps and revegetation/

reclamation activities which epresent the method of achieving

and supporting postmining land sese The list of activities are

organized in the approximate 0 der of execution. A majority of

the listed activities are a ditionally discussed in further

detail in various sections of t is Renewal Application.

Sealing of Large Diameter Openi

Miscellaneous portal openings a d ventilation shafts:

• •

Openings will first be seal

Any remaining opening will

Plugging of Small Diameter Open

with concrete blocks and mortar .

backfilled .

Exploratory holes and water w

4It monitoring or postmining landus

not approved for abandonment

4-73

• Each hole will be cased a d sealed with a cement plug.

• A monument will then be e ected over sealed holes.

Removal of Buildings

Office, shop, storage,

explosive storage:

changehouses,

• Each structure will be re

treatment buildings,

• Removal or fracture of

close to the surface.

undations will follow if they are

foundations will be covered

with at least six feet of dirt.

Equipment Removal

Mining equipment, conveyors, power structure and line, coal

processing and handling equipm nt:

• The above mentioned items will be removed.

• Support structures will then be removed and foundations

fractured and covered.

Mine Operational System Remova

Systems such as domestic wate will be phased out and removed or

buried.

4.7 P

4-74

Present Area Ownership

Mine Site and USFS Exploratory Excavations

Conveyor and Private Pipeline

Main Access State

Road

Loadout Private

Waste Rock Private Disposal

South Fork USFS Breakout

James Canyon USFS/Private

Winter Quarters Private

Ventilation Facility

NOG Bleeder Shaft USFS Compatible

Swens Canyon USFS Ventilation Facility

Revised: 10-13-2017

TABLE 4.12-1

PROPOSED POSTMINING LANDUSE

Proposed Premining Postmining Alternative Landuse Use Use

Wildlife/ Wildlife/ Picnic Adequate Grazing Grazing Area Habitat Habitat

Grazing/ Grazing/ Wildlife Adequate Wildlife Wildlife Habitat Habitat Habitat

Forest State None Compatible Access and Road Service Road

Grazing, Grazing/ Wildlife Adequate Picnic and Wildlife Habitat Stock Pens*

Grazing/ Grazing/ Wildlife Adequate Wildlife Wildlife Habitat Habitat Habitat

Wildlife/ Wildlife/ Wildlife Adequate Grazing Grazing Habitat Habitat Habitat

Forestry

Wildlife/ Wildlife/ Wildlife Adequate Grazing Grazing Habitat Habitat Habitat

Capacity Relationship

To Support To Existing Proposed Landuse Use Policies

Compatible

Compatible

Adequate

Compatible

Compatible

Compatibf cOnoOelT'-C" 1.,..-\ Lw.J

NOV 1 6 2017

iv. of Oil Ca~ & I ,- -Compatlore J ;l:::; YII n/ Of>

Grazing Grazing Adequate Adequate Compatible

Mining Wildlife Wildlife

Wildlife Wildlife Adequate Adequate

Wildlife/ Wildlife/ Adequate Adequate Compatible Grazing Grazing

4-75

"Note: The loadout area picnic facilities and stock pens are not proposed to be included in the proposed

post-mining use. The permittee is the landowner of this site and is not in the recreation or livestock

business, and therefore, elects not to reestablish the picnic and livestock facilities. This land was

purchased by quit-claim deed dated, May 24, 1991, for the area occupied by the loadout facilities in 5-1/2S

E1/4, Section 1), T.13S R.7E SLBM. There is no pending litigation subject to the quit-claim deed. The

grantor reserves the coal rights under the lands.

Revised 9-18/2015 4-75(a)

INCORPORATED

OCT 0 9 206

Div. of Oil, Gas & Mining

•

•

•

Area Cleanup

Solid waste generated in th

collected and removed.

Backfilling of Ponds

abandonment operations will be

Ponds will be drained, the se iment will be tested for toxicity

and removed for disposal as a propriate, then the pond will be

allowed to dry out. When the soil is dry, the railroad loadout

pond will be backfilled. The portal pond will be configured as

part of stream reclamation.

Stream Reclamation

The stream at the mine site

4.4.2-lA according to the plan

Recontouring of the General Are

I be rechannelled as shown on Map

utlined in Section 4.19.5.

Final grading and backfillin will achieve a final contour

suitable for the wildlife/grazi g habitat postmining landuse.

• Operational benches will n t be removed. Their banks will be

reduced to a 3h: Iv slope; their surface areas will have a

10h:1v slope for drainage.

• Side hill cuts range betwe n 1h:lv and 1h:2v. Most of these

cuts will remain upon a andonment. Any physical support

systems used to control hese cuts along with any small

terraces used for control will also remain.

• Abandoned road banks will b sloped to an average of Ih:lv.

Distribution of Topsoil

Topsoil from the stockpiles iII be spread over the disturbed

areas in a manner to reduce exc ssive compaction .

4-76

Scarifying Areas

Operational areas will be ified to reduce compaction and to

preve~t topsoil slippage. ep slope areas which must remain

after abandonment will receiv special ripping to create ledges,

crevices, pockets, and 5. This will allow better soil

retention and vegetation ishment.

Fertilization and Neutralizati n

All necessary fertilization 0 neutralization, as determined by

soil testing, will be done acc rding to the plan in Section 4.5 -

SOIL PREPARATION AND FERTILIZA ION PLAN.

Seeding and Tree Planting

Vegetation will be establishe

the edge effect

to prevent erosion, to optimize

cover. Perennia 1 woody species

will be emphasized along with those of proven nutritional value

and ability to support wildlif. The types and amounts discussed

in the revegetation section (S ction 4.7) will be used.

Moisture Retention

All areas to be reseeded will be mulched. various mulches will

be used including straw, woo

Section 4.6.4)

Maintenance

fibers and excellisor mats (see

Fencing, irrigation, and we d control will be used only as

needed, according to operation 1 testing results.

4-77 UTAH DIVISION OIL, GAS AND M!NINr;

•

i·e

•

Regrading and Reseeding

Erosion that develops in coapleted areas will be minimized by

repeated grading, seeding and mulching.

Success Monitoring and ExtendE~d Responsibility Period

vegetatipn will be rnonitore(~ during the applicable period of liability as outl ined in R6 4 - 301- 356 to determine success of abandonment reclamation. will then be made.

A ~etermination of vegetation success

Removal of Site Drainage I itches and Railroad Loadout Area

Sedimentation Pond

After the disturbed areas a~e stabilized and runoff meets the

applicable state and federal standards without detention time, the site drainage system will be removed. The site drainage system

areas, including the railroad loadout sedi~e~tation pond, will then

be backfilled and revegetated.

Removal of Portal Area Sedimentation Pond

The portal area sedimentation pond will be removed during early Phase I reclamation. Alternat ive sediment control measures such as silt fences, straw bales and c·heck dams will be used until the area

is revegetated and runoff meEts the applicable standards.

Road Abandonment

ADDITION TO TEXT

Section 4.6 - Date 09/11/93

\1 t\~ \~ .. : . . .lJ,J.~ ' .. ~:"t:,\

~.---.. 4 - 78 1

~---~ ----,--..

& -'9~4 I ~

, 1 ;

i,JV , !

i f

'-

I

f ~

;~! I ". , '.: !". ,I

,V~, " r i"iCi :;:-1;11 ; ... , ...... , - 'J

", , L- -- \

' ;-", U AS p.~1) MIN1NO UT '-1-\ D1VlS10: < V! :'-',

n. ~_-.:l

--...----------------_ .......... c-

The mine support roads will be reclaimed in the permit area. Culverts and

blacktop surfacing material will be removed. Reclamation would then include

recontouring, ripping, adding cross drains, water bars, topsoil and seed.

Removal of Scofield Waste Disposal Site Sedimentation Pond

The livestock permittee through the owner has requested that the

sedimentation pond not be reclaimed. If, over a period of time, it shows

that these ponds hold natural runoff water and will be beneficial for

livestock and wildlife use, they will not be removed. However, for planning

and bonding purposes the sedimentation pond is to be removed and reclaimed

(Map 4.16.1C). In the event the pond is not removed, Map 4.16.1B illustrates

the reclamation work.

Removal of Winter Quarters Ventilation Facility (WQFV) Sedimentation Pond

The WQVF area sedimentation pond will be removed during early Phase II

reclamation. Alternate sediment control measures such as silt fences, straw

bales and check dams will be used until the area is vegetated and runoff

meets applicable standards.

Removal of the Swens Canyon Ventilation Facility (SCVF) Cuttings Pond

The SCVF area sedimentation pond is solely used for cuttings from

construction of the shafts. It is not intended as a sediment control

structure for the site. Once the shafts are constructed, the ponds will only

collect water from the immediate vicinity of the pond. Material from the

pond will be used in the backfilling of the shafts at reclamation. As shown

in Table 4.12-1, both pre- and post-mining uses are the same;

Wildlife/grazing habitat. For details on the management plans and

performance standards see pertinent Chapter 4 section of this M&RP such as

Sections 4.4 (Backfilling), 4.6 (Topsoil handling), 4.7 (Revegetation) ,and

4.9 (Openings Sealing.

Revised: 5-27-16 4-78(a)

INCORPORATED

JUL 1 9 ~lJ1t

Div. of Oil, Gas & Mining

NICK AMPINOS Attor ey at Law

1pr ~ '')rth Carbon Avenue it Jlah84501 Telephone: (435) 637-8100

Fax: (435) 637-2111

•

•

VIA - FACSIMILE - 435/448-2632 Hard Copy to Follow

Gary E. Taylor Sr. Environmental Engineer Canyon Fuel Company, LC P.O. Box 719 Scofield, UT 84526

Augu t 25, 1998

RE: Telonis Property - UP Canyo

Dear Gary:

Thank you for your letter of August 20, 1998. As you are aware, I serve as attorney-in-fact for the Telonis family conc rning management of the properties which include, but are not limited to, the UP Can on disposal site.

Request is hereby made that the st ck ponds within the disposal site remain as part of the final reclamation plan. Those stock ponds are most helpful for livestock and wildlife use.

Thank you.

NS~ xc: Telonis Family

'I lNCOlItWOJRA ]fED . EFFECTIVE: \

_,~ I

UTAH DIVISION 0lW to ~~9 1 __ --

•

•

•

Additional Information Con erning The Post Mining Land

Use at the Scofield Waste ock Site is located in the

CONFIDENTIAL FILE

Revised: 02/12/08

1 " i

• "_ .. ) ~ 'J ,:", __ ,";

Compliance Documentation

Upon expiration of the respon ibility period and at the time of

bond release, compliance docu entation will be presented by the

Permittee.

4.12.2 Proposed Underground Mining Activities and

Consistency wit Landuse Plans

The mine site is on U.S. Forest Service land. The U.S. Forest

Service has indicated that the land should be returned to

wildlife/grazing (rangeland) habitat. (Manti-LaSal National

Forest Land and Resource Ma agement Plan, 1986) The Longwall

underground mining system consistent with this plan as it

controls the effects of subsid nce.

Final Surface Configuration

The proposed final surface co tour plan would allow the side hill

cuts and operational benches at the mine si te to remain after

abandonment. The fill banks between each bench level would be

reduced to 3.0h:1v.

various illustrations, Maps .4. 2-1A, and 4.2. 2-1B present the

proposed topography of area. The final

abandonment contours have bee drawn with heavier .lines over the

lighter original contour line. As the drawings illustrate, the

final surface drainage chann

structures to allow

location of operational faci

Upon abandonment, all surface

wi 11 inc lude meanders and drop

dissipation. The maps include

reference purposes only.

will be removed.

4-79

4.12.3 Visual Resourc Assessment to Achieve Postmining

Landuse

The abandonment assessment w'll concentrate on how effectively

final drainages and slope patt rns fit into the area's general

~----------~~~~~------

"---~1

MAR 231993 I ~ i ~

~ .~

TAR DMsIONou.. GAS ANDMlNINa i ~~--------------------~~j

I I T Xl n 4.12.2 Page 4-79(a) Date 09/28/92!

4-79(a)

•

•

•

visual resources. This assess ent will occur through the period

of liability .

4.12.4 Recreational

Postmining Landus

During the life of the

abandonment, recreational

urce Assessment to Achieve the

and with special emphasis at

as assessed by the u.s. Forest Service, will a review of postmining fishing,

hunting, camping, hiking, recreational landuse. If it is

found, during the liability pe iod, that any of these activities

are decreased due to the minin operation, corrective actions may

be taken.

4.12.5 Mineral

Postmining Landus

Assessment to Achieve the

Before abandonment, the resources contained wi thin the

Skyline permit area will The abandonment assessment

will ensure that oil and velopment will be possible at the

conclusion of mining. Measures taken to protect the unmined coal,

such as portal sealing, will a so be assessed. No other mineral

resources are known to be prese t in commercial quantities.

4.12.6 Rock Disposal Sit

The assumed pre-mining rangeland. The pi t

area will be reclaimed to native rangeland per the reclamation

plan. The access road will no be reclaimed {see Map 4.16.1-1B}

and at the request of the landowner, the guard rail along

portions of the road will be re oved during reclamation.

The representat i ve of of the leased property have,

through a letter to the Applic tion, stated that the land around

the proposed disposal be used for grazing once the

abandoned strip pit is filled. The letter is attached as Exhibit

1 in Section 4.1.

4-80

The owner's representative requests that the pit fill be leveled off

so that it can be used for corrals. The leveled-off fill will be

reclaimed to native rangeland per the Reclamation Plan.

4.12.7Winter Quarters Ventilation Facility (WQVF)

The pre-mining land use was native rangeland providing habitat for

grazing and wildlife, with associated impacts from mining and timber

harvesting. The WQVF pad site and access are all on private land.

The pre-existing road will not be reclaimed and any associated road

improvements will remain. At reclamation, the mine openings will be

sealed and/or backfilled, the pad, pad-access road, and associated

facilities will be removed and the Approximate Original Contour

(AOC) be returned. Once the reclamation commitments have been

achieved, the pre-mining land uses will be adequately re­

established.

4.12.8 NOG Bleeder Shaft

The pre-mining land use provided habitat for grazing and wildlife

with associated impacts from timber harvesting. At reclamation, the

mine opening will be backfilled, capped, the pad, access road, and

associated facilities will be removed and the approximate original

contours (AOC) will be returned. At the completion of reclamation

activities, the pre-mining land uses will be adequately re­

established prior to liabilities being released.

4.12.9 South Fork Breakout

The pre-mining land use provided habitat for wildlife, wildlife

grazing,and forestry. A portion of the 0.96 acre disturbed and

permit area boundary was approved for full bond release in 2017, and

released from the disturbed and permit area boundary. 0.36 acres,

including the road and topsoil area, were approved for full bond

INCOR r:I .... ,r'! A"r"-o release while 0.60 acres remains wi thin the disturbed and permit ' I 11..."" lH L:

area boundary and will be reclaimed by Skyline Mine.

3.2.11-1 for details.

Revised: 10-13-2017

See plate

NOV 1 6 2017

4-81 j ': " (., Gil, C;;l.S & IViininQ

•

•

•

4.13 PONDS, IMPOUNDMENTS, BANKS, DAMS & EMBANKMENTS-MINE PLAN AREA

4.13.1 Sedimentation Ponds

Four sediment ponds for surface water runoff are required, one at the mine site, the second at the

coal load-out site, the third at the rock dispos I site, and the fourth at the Winter Quarters

Ventilation Facility. Each pond is designed t provide adequate volume for sediment

containment plus an adequate volume for a th oretical 24-hour detention of runoff from a

24-hour, 10 year precipitation event (Mine Si e Pond Section 7, Volume 5 Loadout Site Pond

Section 13, Volume 5) ,Rock Disposal Pond ection 15, Volume 5, and Winter Quarters

Ventilation Facility (Volume 5 Section 24). he location and preliminary design characteristics

of each of these three ponds is described in S ction 3.2 - COMPONENTS OF OPERATION,

subsection 3.2.1-Ponds, Impoundments and ams. The maintenance for each pond is described

in Section 3.2 - COMPONENTS OF OPERA ION, subsection 3.2.6 - Procedures for

Construction through Removal of Major Stru tures and Facilities. The reclamation timetable for

removing the pond structures is presented in ection 4.2 - RECLAMATION TIMETABLE.

The design drawings for the mine site, load-o t sedimentation, Waste Rock disposal, and Winter

Quarter ponds are shown in Maps 3.2.1-1 an 3.2.1-2, and Maps 3.2.1-3 and 3.2.1-4, Map

4.16.1-1B, and 3.2.4-3D respectively.

The area under the sedimentation ponds will ot be subsided. The ponds shall be operated in

accordance with UPDES Discharge Permit co ditions. Operations effecting the UPDES

Discharge Permit, which are not clearly defin d in the permit, shall be coordinated with the

Revised: 12-30-09 4-82

INCORPORATED

JUL 2 9 2010

Div. of Oil, Gas & Mfning

•

•

•

Division of Environmental Quality. The Pe ittee will operate the ponds in a prudent manner

and will attempt to reduce the sediment loadi g to the receiving waters. Pond decanting will be

utilized to minimize sediment loading into th receiving stream. When decanting operations are

conducted, they will conform with applicable water quality standards including exercising the

settleable solids measurement option of the DES Discharge Permit during periods of storm

runoff or snow melt.

Revised: 12-30-09 4-82(a)

INCORPORATED

JUL 2 9 2010

Div. of Oil, Gas & Mining

The portal area sedimentation pond is recessed and, therefore, has no embankments requiring

geotechnical investigations. The engineering evaluation for the load- out area sedimentation pond is

discussed in Section 3.2.1 and in Volume 5.

The loadout area sedimentation pond was designed and built with a combined slope of 4: 1.

Engineering justification for departure from the recommended 5: 1 combined slope is included in

the Engineering Calculations, Section 1 of Volume 5. During sediment clean out of the loadout

sedimentation pond, the pond shall be drained of all the water that will meet permit requirements .

Water not meeting discharge requirements may be used to water roads for dust suppression, water

vegetation within the area reporting back to the sediment pond or may be hauled to the portal

area sedimentation pond.

The rock disposal area sedimentation pond is recessed and, therefore, has no embankments

requiring geotechnical investigation. During sediment clean out of the rock disposal sedimentation

pond, the pond shall be drained of all the water that will meet permit requirements. Water not

meeting discharge requirements may be used to water roads for dust suppression, water vegetation

within the area reporting back to the sediment pond or may be hauled to the portal area

sedimentation pond.

The Winter Quarters Ventilation Facility pond has an embankment that will be built according to

designed specifications. Engineering Calculations are located in Volume 5, Section 24, and

illustrated on Map 3.2.4- 3D.

The four sediment ponds will be inspected, at a minimum, once each calendar quarter for

structural weakness, erosion, and other hazardous conditions. Any deficiencies found will be

reported to DOGM. Reports are kept at the mine office and are available upon request.

The Swens Canyon pond is technically not a sediment pond for storm water sediment control at the

site, but a drill- cuttings pond from the drilling of the shafts. The pond is designed to contain the

storm water runoff from a 100- year, 24-hour storm event and is not designed to discharge.

Engineering Calculations are located in Appendix Volume 5, Section 24 of the M,&RP (Swens Canyon

Ventilation Shaft Pad, EarthFax, 2014), and illustrated on Plate 3.2.4- 4C.. It will be inspected for

structural integrity on a frequency similar to the other sedimentation ponds.

Revised: 5-27-16 4-83 INCORPORATED

JUL 1 9 lUI

Oiv. of Oil, Gas & Mining

~ 4.13.2 Impoundments

Two sediment ponds will be use to impound water from surface

runoff at the waste rock site. The water will be used for live-

stock and wildlife. Each pond is designed to provide adequate

volumes of water.

4.13.2.1 Upper Stock Pond

The upper stock pond will be c nstructed as part of final

reclamation of the waste rock isposal site. The pond was

designed with a bank slope of :1. The upper stock pond is

incised and has no embankments requiring geotechnical

investigations. Water will fl w into and out of the pond via

ditch UD-S. The location and reliminary design characteristics

• of the ditch are described in olume 5, Section 14 - Drainage

Control Waste Rock Disposal Si e and on Drawing No. 4.16.1-1B.

The pond will have a capacity f 0.83 ac.-ft. The maintenance of

the pond is described in Secti n 3.2 - COMPONENTS OF OPERATION.

These procedures will be folIo ed during the active life of the

waste rock site and the land 0 ner will maintain the pond after

reclamation. The water flowin into the pond is from undisturbed

drainage. The quality of the ater coming from the undisturbed

drainage is to meet standards or usage in agriculture and

recreation.

4-83 (a)

• I nNCOIR1P\OfM~I)iD : I.~C!I,_~~.~~:. .

J MAR o:~ 1999 y ... ---

UTAH DIVISION OIL, GAS AND MINING

~ Water from the pond will flow 'nto the ephemeral stream in u P

Canyon. The-pond will improve the post mine land use since no

•

•

active water source is present y available for live stock and

wildlife.

4.13.2.2 Lower Pond

The lower pond has two embankm nts, one on the south side and one

on the west side. The geotech ical report for the embankments is

found in Volume 5, Section 1 - Slope Stability Evaluations and

Access Roads Embankments - Sed'mentation Ponds, Miscellaneous

Fills, Facilities and Designs. The slopes of the embankment were

designed and built with a comb'ned slope of 2:1. Water will flow

into the pond via ditchs DD-16 and DD-17. The location and

preliminary design characteris ics of the ditch are described in

Volume 5, Section 14 - Drainag Control Waste Rock Disposal Site

and on Drawing No. 4.16.1-1B. The pond will have a capacity of

2.53 ac.-ft. The outflow from the pond will occur at the the

decant pipe through the reclam tion and bond period. The outflow

from the pond will occur at th emergency spillway located on

the south embankment of the po d after bond release. The

emergency spillway is designed to discharge runoff from 25 year 6

hour storm event or approximat ly 5.41 ft 3/s for calculations

refer to Volume 5, Section 15- Waste

4It The spillway and out slope wil be riprapped to prevent erosion

of the soils. The maintenance for the pond is described in

Section 3.2 - COMPONENTS OF OP RATION. These procedures will be

followed during the active lif of the waste rock site and the

land owner will maintain the p nd after reclamation. The water

flowing into the pond is from he reclaimed area. The discharge

water quality must meet efflue t standards under UPDES Discharge

Permit UT-0023540 through recl mation and bond period. The water

from the pond will be used for agriculture and recreation. Water

from the pond will flow into t e ephemeral stream in U P Canyon.

The pond will improve the post mine land use since no active

water source is presently avai able for live stock and wildlife .

•

• UTAH DIVISION OIL, GAS AND MINING

4.14 PROTECTION OF PUBLIC PARK AND HISTORIC PLACES

No public parks or registered historic places are located in areas affected by the Skyline

mining operation. The Permittee agrees, ho ever, to notify the regulatory authority and the

Utah State Historic Preservation Office (SH 0) of previously unidentified cultural resources

discovered in the course of mining operatio s. The Permittee also agrees to have any such

cultural resources evaluated in terms ofNati nal Register of Historic Places eligibility criteria.

Protection of eligible cultural resources will e in accordance with regulatory authority and

Utah SHPO requirements.

The Winter Quarters Ventilation Facility ( VF) is located on the westernmost edge of the

Winter Quarters town site. A historical surv y was conducted by Earth Touch, Inc. and is

located in the Confidential File. A second r port submitted by Canyon Environmental serves

as an addendum to the first report due to ch ges in the pad design which ultimately had the

potential to affect other features. The cult al resources in the Winter Quarters town site has f

been evaluated numerous times in terms oft e National Register of Historic Places eligibility

criteria and been determined to qualify. Ho ever, the affected landowners have expressed to

SHPO (on numerous occasions), that they a amantly do not want the site to be listed. The vast

majority of features with historical signific ce associated with the Winter Quarters town site

are located at least ~- mile east of the ventil tion facility and do not compromise the integrity

of the site. A total of ten (10) dilapidated e hen and/or stone foundations may possibly be

impacted by the ventilation facility. Sites loc ted along the existing road up Winter Quarters

Canyon were avoided when conducting road improvements. A meeting conducted with

Skyline Mine, SHPO, DOGM, and Public L nds Policy Coordination Office personnel

determined the most suitable protection of t e Winter Quarters Canyon site was to create a

booklet on the Winter Quarters area that pro ides the public with an awareness of the cultural

activities that were historically in the area. Memorandum of Understanding (MOU) was

drafted that outlines the direction of the boo let that is scheduled to be completed in 2011.

Revised: 7-22-10 4-84

INCORPORATED

AUG 2 3 2010

Div. of Oil, Gas & Mining

•

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•

4.15 RELOCATION OR USE OF PUBLIC ROADS

Relocation of Forest Developmen Road 50227

Forest Development Road 50227, most commonly referred to as the

"Eccles Canyon Highway", and d signated by the Utah Department of

Transportation as SR 264 as part of the Utah State Highway system,

was constructed according to utah State and Federal highway design

criteria and standards.

The original mine plan called for the construction of a by-pass

road in South Fork Canyon. UD T and USFS engineers concluded the

road should be constructed Canyon through the mine site.

SR 264 was officially placed 0 the Utah State Highway system in

the Spring of 1986 by a action of the Utah State

Transportation Commission and ubsequent legislative approval and

acceptance by the Utah State L gislature. Eccles Canyon highway,

SR 264, received final gradi and surfacing during the 1986

construction season.

Since the Skyline mines access and haulage roads join in such

right of way line with State oad 264, and since the mine portal

area was proposed to be adj cent to the public road in the

original permi t application s 1979 I the Permi ttee is

exempt from the requirements identified in R614-103-234. The

Permittee is working closely w th UDOT to address impacts of coal

mining activities with SR 264 s follows:

1. Jersey barriers placed along the road from the

2 •

3 .

truck loadout to the uppe property entrance.

Present 24" stop signs

with larger 30" signs by

Battery operated flashin

above and below the

the public that coal

roads have been replaced

caution signs will be installed

access roads on SR 264, alerting

may be in use.

4-85

•

•

•

4 . Truck drivers

individually

transportin

alerted to

special consideration

ensure their safety.

TOpsoil was removed prior

properly protected and

the Permittee's coal have been

e especially watchful and give

blic vehicles traveling SR 264 to

initial road

as outlined

construction

in Section 4.6

and

TOPSOIL AND SUBSOIL HANDLING PL N .

4-86

4.16 UNDERGROUND DEVELOPMENT ASTE AND EXCESS SURFACE SPOIL

Rock and earth materials produced in the unde ground mines will normally be disposed of in the

underground working areas either through con ntional back stowing or through slurry placement.

A complete description of the slurry process s provided in Section 3.2.8, Plan for Disposal of

Waste Rock. Excess material produced th t cannot be stored underground in the existing

operation will be brought to the surface and s ored in temporary gob piles (locations shown on

Map 3.2.1-1) until the material can be transp rted to the approved waste rock disposal site near

Scofield, properly used as fill material within the disturbed area or returned underground within

the permitted area. Material returned undergr und will comply with 30 CFR Part 75 Subpart E,

"Combustible Materials and Rock Dusting".

Coal mine waste produced in the undergroun Soldier Canyon and Dugout Canyon mines will

normally be disposed of in the underground orking areas of the respective mines. Excess gob

material produced that cannot be disposed of erground will be brought to the surface and stored

in a temporary gob pole until the material can hauled to the approved Skyline Mine Waste Rock

Disposal Site. Any gob material hauled from e Soldier Canyon or Dugout Canyon mines to the

Skyline mine Waste Rock Disposal Site will e tested for toxicity as outline in Section 4.4.5 of

the permit.

There is approximately 35,000 cubic yards 0 underground development waste material at the

Sky line railroad loadout area. This material is located just east of the topsoil stockpile. Toxicity

tests were made on the material before DOGM gave approval for the material to be placed at this

site. It is planned for this material to rem in on site and be used as fill material in final

reclamation as shown on Map 4.4.2-1C.

Development waste and surface spoil produc d in the construction of the surface facilities and

portal entries of the mine have been used as f 11 material for building, the mine pad areas.. ">'-::""-'_",.

" II ,",;!

Revised 5/28/98

~ COMMERCIAL TESTINC:: & ENGINEERING CO. a... CJelEAAL O",CIS: ,.10 SOUTH HIGHLAND AVG •• SlIlTE 210-8. LOMIA"O.IU.JNOtS tol4t • (701t 163-~

&a.~-------+-----Wembt, of '" SGS Graup '" '* a.MhIt dt SvwIIucII .... '-•

~

•

•

September 16,1992'

UTAH PUEL COMPANY . P.O. lox 719 Belper Utah 84526

Kind of .'1)1'18 Soil reported to us

Salftple taJcen at Utah Fuel

I_le" taken by Utah Fuel

Date .a"pled August 11,

Date received August 12,

1992

1992

P1.£AU AOOA£SS JU COAAeSPOHOENC! TO: ,.0. lOX 1020, HU~T1NOTOH. UT",28 . TQ.&PHONI: (t01) _lSi 1

fU:. (101) 153-211179

Sample identification by UTAH FUEL COMPANY

Loadout Gob 26.'15 Ibs. 1030 hr.

Anal}sis report DO. 59-150800

SOIL IllALYSI~

Carbonate pI conductivity Saturation "

6.S'& 7.3 units 4. 29mmhos/cra

34.6

PARTICLE SIZE ANALYSIS , Sand 79.6 , Silt 6,9 , Clay 13.5 rexture Sandy Loam

SOLUBLE CATIONS Calcium 23.7.aq/l Hagnesium 18.6 meq/l Sodium 10.3 seq/l Potassium 0.79 seq/l

IodIn. AdsorptioD Ratio 2.24

Rock Frlg1lents Alkalinity Total litroqen

Organic CarbOll ."

49.4' 1.94 seq!l 0.49 ,

10.8 ,

ll~IIJlB1J: WAnR CAPACITY . 12.' Cl/3)

7.9 (15)

Available Phosphorons " 2.83 .. g/kg

~,

Munsell Color 2 .. 5 YR 3/0

CJV!R 4Q IAAHCtt L.UM:)MTO"'fS STRATDc,\U.Y lOCAteD IN PfUN¢IPIIl. COAL "'" tHO AREM. notwATIAAH) OA5AT ~ N)Ms. AND MIlA LOACINO FACIUlIU ,....5 4-87(b)

"'I. COMMERCIAL TESTING &. ENuINt;t;t\II"U ~u . .. ._~ __ O_tN_C_ftA_L._O_F-fl-CE_S_; _'B_1'_S_O_un1_H_1G_H_""A_N_O_A-V_L_. _1U_rT_I+1O--1-, L_O_M_B_AR_D_, _IlL_IN_O_IS_8_01_4_S ._'_'08_'_m_-._30_0 ______ _

.-..cl ••

• ~ .

Septeaber 25, 1992

DTAH FUEL COMPANY P.O. Box 719 Selper Utah 84526

lind of .aMple Soil reported to as

Sample taken at Utah Fuel

Sample tak~n by Utah Fuel·

Date sample4 ~ugust 11,

Date received August 12,

•

Sample identifi~attnn by UTAH FUEL COMPANY

l.oadout Gob 26.151bs. 1030 hr.

1992

1992

~al!8is report o. 59-1S0800

. BOIL AllAI.,YSTS

Total Available Sa enium O.04rnq/kg

Total Availahle oron O.84Ilg/kq

;

.",

MpH 2 3 1993

UTlill DIvISION OJ... OAS AND h'fINING

.... peclIuit,ubmltttd, CO.aERClAl TUTINO , !N01NE!fVHQ CO.

~~y~ oAR S. llDlWATeR AHa GREAT UJ<U PORts-~ AIV&R LOADING FAQUiltS

4-87(c)

COMMERCIAL TESTI G It ENGINEERING CO. GENERAL OFFICES: 1919 SOUTH HIGHLAND AVE .• SUITE 210·B, LOMBARD, ILLINOIS 60148· (708) 953·9300

S,NCE '908 Member of the SGS Gro p (Soc~" GaMrale de Surv"lIance)

• ~

•

•

December 11, 1992

lind of saJlple Coal reported to us

Saaple taken at Utah Fuel

Saaple taken by Utah Fuel

Date sCUlpled November

Date received November

19, 1992

20, 1992

PLEASE ADDRESS ALL CORRESPONDENCE TO: P.O. BOX 1020, HUNTINGTON, UT 84528

TELEPHONE: (801) 653-2311 FAX: (801) 653-2479

Saaple identification by UTAH FUEL COMPANY

BRID GOB - Loadout Area 1130 hr. Top Size 2"

RAN BY INTERMOUNTAIN LABS

Analysis eport no. 59-154399

ACID BASE POTENTIAL Maxiaua Acid Potential Neutralization Potential Acid-Base Potential

SOIL ALYSIS

24 7 tons CaC03/ lOOP tons 14 .0 tons CaC03/ 1000 tons 11 .0 tons CaC03/ 1000 tons

Respectfully submined, COMMERCIAL TESTING & ENGINEERING CO .

Manager, Huntington Laboratory

OVER 40 8RANCH LABORATORIES STRATEGICALLY LOCATED IN PRINCIPAL COA MINING AREAS, TIDEWATER AND GREAT LAKES PORTS. AND RIVER LOADING FACILITIES

TERMS AND ONDITIONS ON REVERSE 4-87(d)

COMMERCIAL TEST NO • ENGINEERING CO. GENERAl. OFFices: 1919 SOUTH HIGHLAND AV '. SUliE 210-8. LOMBARD, ILLINOIS 60148· (7081953-9300

• ,'"co''" Member of the SGS

PLEAse ADDRESS ALL CORRESPONOENCE TO: P.O. BOX 1020. HUNTINGTON. UT 84528

TELEPHONE: (SOl) 653-2311 FAX: (801) 653·2479

•

Auqust 17, 1992

UTAH FUEL COMPANY P.O. Box 719 Helper Utah 84526

Kind of sallple Coal reported to us

Sa.pIe taken at Utah

Sa.pIe taken by Utah

Date sa.pled June

Date received July

pH Conductivity Saturation \;

Fuel

Fuel

29, 1992

10, 1992

Analysis

7.4 units 3.36mmhos/cm

35.2

PARTICLE SIZE ANALYSIS % Sand 62.0 % Silt 26.2 % Clay 11.8 Texture Sandy Loam

SOLUBLE CATIONS Calcium 26.2 meq/l Magnesium 11.1 meq/l Sodium 5.42 meq/l

Sodiu. Adsorption Ratio Exchangeable Sodiu. Percentage

1. 5 5. 5

Sample identification by UTAH FUEL COMPANY

Skyline Gob 1030 hr. ~ iit .h-::_·:'ri\/ i::

·---·-·------·1 I

,.. 1 ? I) 1on') : ;" ... ,) J",~ r ..... _ L - •• - .... --------

.... y. r""-"iII"'~~_"""·'·-".-Jl.I.

59-149R23

Rock Fraqments Total Nitrogen Nitrate-nitrogen Organic Carbon

46.5 % 0.66 % 1.32 mg/kg 16.5 %

Total Available Selenium <0.02mg/kg

Total Available Boron O.70mg/kg

Available Water Capacity 14.7 (1/3) 7.3 (15)

ACID BASE POTENTIAL Naximn. Acid Potential Neutralization Potential Acid-Base Potential

9.68 tons CaC03/ 1000 tons 101.5 tons CaC03/ 1000 tons 91.8 tons CaC03/ 1000 tons

• OVER 40 BRANCH LABORATORIES STRATEGICALLY LOCATED IN PRINCIPAL

F-465 Orlgmal Watermarked For Your Protection TERMS

Respectfully submitted. COMMERCIAL TESTING & ENGINEERING CO .

Manager. Huntington Laboratory

MINING AREAS. TIDEWATER AND GREAT LAKES PORTS. AND RIVER LOADING FACILITIES

1- 31[e..) CONDITIONS ON REVERSE

Approximately 2700 cubic yards of early oper tional waste material were used as fill at the loadout

site. This material was placed on natural gra e. After stripping, the topsoil is well above the 100

year flood plain for the Eccles Creek strea channel. Ground water levels in the loadout area

were found to range between 4.5 and 17.7 fee; consequently, no waste material was placed below

prepared to aid in silo foundation dewatering nd provide water level information only incidentally

its intended purpose.) Copies available at m nesite or at the Salt Lake City offices.

A seep and spring survey in the immediate a ea of the loadout waste disposal site has identified

only one source. A French drain was constru ted to drain subsurface flow for part of the loadout

area including that waste disposal section. low from this source is monitored and reported as

station CS-13.

This loadout area waste material will be left a the site during reclamation but will be recontoured

to achieve final configuration as shown on Plate 4.4.2-1 D. During recontouring, the waste

material will not be placed below groundwat r table level or within the 100 year flood plain.

Other mine wastes from the sediment ponds d earthen materials from clean up of pads, ditches,

etc., may be disposed of at the Scofield Was e Rock Disposal site. Sediments will be tested for

toxicity before disposal. Sediment from the p rtal yard sediment pond may also be pumped back

into the mine if suitable mined out areas are vailable.

4.16 .1 Waste Rock Disposal Genera Description

A rock waste disposal site has been develop d and approved at a location southeas~ of Scofield.,

Utah and approximately 3.6 air miles from th Skyline mine s~te ~t1~~r,(~~·Jll~-r)f._)1\~~Pf~9.~~~i.e

disposal site is an abandoned strip mine pit ac essed by an exifg road r~tili[~~ded.

\ i JUN 04 1998 \

\ L_--------.l , , UTAH D1V1StDN OIL,. GAS AND lYhN!NG

Revised 5/28/98 1 QCbf3:_ .. 4-88 __ __ -j'~-" ~~""V""I"._~-fi!F'

The rock wastes are hauled by truck from the Skyline Mine site (portal area) and the unit train loadout facility to the waste disposal area.

The rock disposal site and access road are loc ted upon land owned by the Estate of George Telonis. The legal right of access and use of he lands for the disposal of rock waste has been granted to the Permittee by the heirs of the Es ate in a lease effective January 1, 1982 and expiring, unless renewed on December 31 20 1. The lease agreement was modified in 2006 and 2007 to include additional lands totaling appr ximately 37.5 acres and extending the lease through December 31, 2020. The access road d part of the disposal site are part of a larger area previously disturbed by surface and undergro nd mining and never reclaimed. The 2007 expansion area was previously disturbed with timbering activities.

Portions of the surface affected have been us for grazing after abandonment of the strip pit, although the pre-existing conditions (lack of clamation and underground coal fires) have greatly reduced the area's potential for grazin or for any other use. As the pit has been filled in with waste rock and contemporaneously recla med, the Landuse of the site has increasingly been used for livestock grazing and incidental wild ife use.

Investigations as to potential cultural resourc s within the area to be affected and the adjacent areas have been conducted.

Water is present only for a brief period durin and immediately following precipitation events and/or during spring runoff.

The climate of the study area is similar to tha described for the lower elevations of the Skyline permit area.

The Permittee uses the rock disposal site to d·spose of underground rock waste produced during mining operations which cannot be permanen ly stored underground due to either the lack of adequate storage room or the content of coal xceeding the limits specified in 30 CFR:75.400 through 30CFR:75.403.

The volume of material which must be dispos d of at a surface disposal site will be a very small fraction of the total rock waste produced beca se of the large volume of potential underground

) .1, j u

Revised: 11115/2007 4-89

•

•

•

rock waste storage areas which result from mi ing coal. The economics of loading, hauling and disposing of rock waste at any point other than underground effectively prohibit the extensive use of a surface rock waste storage site.-

If favorable market conditions exist, material ay occasionally be recovered from the waste storage site and returned to the product stream. Surfac royalties and fees will be paid for all recovered material. Material placed in the waste rock dis osal site is neither toxic nor acid generating as indicated by routine sampling and analysis. T e sample results are submitted to the Division annually.

The roof and floor rock for the three mineable kyline coal seams are estimated to be 60 percent sandstone, 30 percent shale, and 10 percent cIa stone. The igneous dike rock varies in composition, but is essentially comprised of ferromagnesian inerals. The majority of dike rock which would require surface disposal is anticipated to be ve similar to basalt and would be very durable and extremely resistant to weathering. The volume ric swell factor for the igneous and sedimentary rock is estimated to be 30 percent.

The Permittee expanded the storage capacity f the Waste Rock site in 2007. Due to changing mining conditions it is hard to provide a reaso ably accurate estimate of the amount of material that will be deposited at the site. The expansi n provides an estimated 300,294 yds3 of additional storage, which should be adequate for the te of the lease .

4.16.2 Winter Quarters Ventil ion Facility (WQVF)

Similar to the surface facilities at the Main Mi e Site, developmental waste generated from the construction of Declined Slope and possibly fr m the vertical shaft will be used as fill material for the remainder of the WQVF pad. All develop ental waste will be tested for toxicity and acid­generating potential at a rate of one (1) sample er 2,000 tons generated to determine whether special storage is necessary. Approximately 8, 00 cubic yards of material is anticipated to be generated from the Declined Slope. Approxim tely 4,050 cubic yards will be generated from the Vertical Shafts if they are sunk from the surfac using conventional methods. If the raise-bore technique is used for the construction of the sh ft, very little material will be stored at the surface. Construction of the WQVF pad is a minimum 0 feet above the elevation of any existing ground or surface water. The WQVF pad will be built a inimum of two streambank widths away from Winter Quarters Creek, thus maintaining a buf r zone and minimizing the potential for stream or pad to impact each other. At reclamation, the evelopmental waste will be used in backfilling of the Declined Slope, the vertical shafts. To achieve Approximate Original Contours (AOC), additional material will be brought from the Waste Rock ite or purchased from an outside source if necessary.

Revised 3-24-10 4-90

INCORPORATED

JUL 2 9 2010

Div. of Oil, Gas & Mining

4.17 SUBSIDENCE CONTROL PLAN

This section describes in further detail the Permitteels mine plan

design, ensuring subsidence effec the Skyline Mine produce

minimum environmental impact. Se tion 3.1 - SKYLINE MINING OPERATION

PLAN describes in detail the prop sed methods of coal extraction and

mine development which were selec partly on subsidence and

nonsubsidence criteria. Section .2 presents the detailed geological

information which provided base for mine plan and

subsidence control design. lowing subs~ccions describe the

principal factors involved uring and controlling subsidence

resultant of the proposed mining perations.

4.17.1 Subsidence Probabili y Survey

Prior to mining, a careful review of the permit area shows that the

following areas could face potent al subsidence impact which may be

of concern: Mountain Fuel Supply gas pipeline, U-264, Burnout Creek

and James Creek which cross the p Upper reaches of

Electric Lake Reservoir, upper Hu tington Creek, Bolger Creek and

South Fork of Eccles Creek will n t be subsided. The gas line was

moved to Burnout Canyon in

the previous location. The gas 1

ly 1990 l s to allow for undermining

was re-established in its

original location in the fall of 000 and a second gas line was

placed in the corridor in the fal of 2001.

A pre-subsidence survey was condu ted in the fall of 2002 of the

North Lease area (Winter Quarters Lease). A map was generated to

illustrate the locations of any s ructures, water rights, and " '

-~ .,~-~ ... ~ ... :. '"

renewable resource lands that cou d be adversely affected by

subsidence. This map is included as Drawing 4.17.3-1A and

illustrates the locations where s rface cracks may appear as OiV OF OIL GAS 8"

result of subsidence, the expe ted maximum amount of

subsidence, locations of water rights, and the area where the

overburden is 700 feet or less over the mineable coal seam,

Revised: 8-24-05 4-91

the Lower O'Connor "A"(See Section 4.17.3 Subsidence Prevention Measures). No buildings, pipelines, or

maintained roads were found in the areas to be subsided as a result of implementing the North Lease mine

plan. In 2010 the panels located north of the Winter Quarters Canyon graben (North-of-Graben), were rotated

90 degrees to maximize coal recovery further east that originally outlined in 2002. The modification did not

impact any additional buildings, pipelines or maintained roads with the additional acreage being undermined. In

2013 a modification to the underground coal lease extended the mining area to the north to include the

northern extent of Granger Ridge. A short jeep trail exists on the western portion of panel 14-Left where there

is an estimated subsidence in the range of approximately 2 feet. The subsidence should not impact the trail,

but it will be monitored for any necessary repairs.

As discussed in detail in Section 2.2 of this M&RP, the rocks in the North Lease area are in compression.

The state of compression of the rocks in the North Lease area will likely allow the subsidence forces to be

transmitted across fault and fracture planes thus resulting in uniform subsidence. Previous mining in Mine # 3,

where the rocks are also under compression, did not result in focused subsidence along faults or fractures.

Indeed, in the southern portion of the mine permit area where the rocks are subjected to extensional forces,

focused subsidence did not take place.

Drilling and field work conducted in the North Lease by Skyline geologist Mr. Mark Bunnell indicates-the

Castlegate Sandstone in the head of Winter Quarters and Woods Canyons in the permit area consist of two

thin sandstone units, separated by slope-forming shale and siltstone. Because of the thinner, "ledge and slope"

nature of the Castlegate in the permit area, the potential for subsidence-induced escarpment failures or

landslides is minimal (3/3/05 M.Bunnell memo). As discussed in Section 4.17.3 and illustrated in Drawing

4.17.3-1A, the combination of geology, depth of cover, and mine plan should keep subsidence affects to a

minimum (See Section 2.2 for detailed geology discussion). Drawings 4.17.1-1 and 4.17.1-2 illustrate that, if

the maximum subsidence does occur, no reduction or significant alteration of the perennial stream flow should

occur. This is due primarily to the existing

Revised: 10-1-13 4-92

INCORPOHi\TE:.D

Jt\N 0 3 2014

Oiv. of Oil, Gas & Mining

stream gradient, projected wors -case subsidence, depth of cover,

and depth of alluvium within th drainage corridor. Although the

gradient is reduced in some are s, no significant ponding or over­

steepening of the gradient is a ticipated. Potential areas of

minor cracking, as illustrated n Drawing 4.17.3-1A, are primarily

a function of the advancement d rection of the longwall panel,

steepness of slope, the lack of confining pressure, and how the

bedrock subsides into the void eft by longwall mining.

The mine will not subside any 0 the perennial streams in the North

Lease without approval Forest and Division. The rotating

of the panels north of the Wint r Quarters Canyon graben in 2010

did not impact the undermining

on the Manti-La Sal Forest.

f the portions of perennial streams

Burnout Canyon Study (Appendix A-

I, Volume 2), conducted in coop ration with Canyon Fuel Company,

LLC, and The Manti-La Sal al Forest, was completed in July

1998. Quoting the Burnout Report, "This study was initiated

in 1992 ... to address the effect of longwall minnig and related

subsidence in the Wasatch Pleat au on hydrology, channel condition

and habitat changes in perennia and intermittent reaches of a

mountain stream." The Burnout C nyon study concluded that any

changes in flow in Burnout areas were likely related to

climatic changes (drought) and ot mining activities (DOGM EDI) .

The stratigraphy, depth of , and general dip of the formations

in Woods and Winter Quarters Ca yons are very similar to Burnout

Canyon (See sections 2.3.1, 2.5 4.17.3, and Appendix A-I, Volume 2

for details). The permittee be ieves the Burnout Canyon Study can

be used to predict the impacts f undermining both Winter Quarters

and Woods Canyons and that mini g in the North Lease area can be

conducted with minimal impacts 0 perennial streams due to

subsidence.

The Forest has indicated that t e forest land is considered to have

renewable resources related to ildlife and grazing.

resources are extremely limited and isolated in this

Revised: 9-16-10 4-93

INr()~POp ,. ..... "') The 1: 1 rob"e r

Div. of Oil, Gas & Mining

area of the forest and will likely never be harvested (Carter Reed, Manti-La Sal National Forest, Oral Communication 10-2002).

Included in the Subsidence Probability Survey for Woods Canyon, Skyline contracted Agapito Associates, Inc. (AAI) to evaluate the subsidence impacts of conducting full-extraction mining in areas with as little as 400 feet of overburden (Appendix A-1 , VoI.2) . The AAI analysis utilizes a numerical model - Surface Deformation Prediction System (SOPS) (Agiotuantis and Karmis 2002) that incorporates, information from the Burnout Canyon area study, local geology, mining and subsidence data. The study predicted less than five(5) feet of subsidence would occur in the Woods Canyon area and mining could safely be conducted in areas with 475 feet of overburden. Other items identified in the AAI study inculde: 1) the average gradient in Woods Canyon (5.71 %)is greater than in Burnout Canyon (4.12%) which suggests the hoizontal strain will be spread along a longer stream path and dampen direct impacts of tensile strain; and 2) the US Bureau of Mines (USBM) criteria for subsidence classifies Woods Canyon as having class III (shaley and silty sandstone) overburden, and the appropriate overburden thickness multiplier would be 461 feet. Incidentally, the same USBM report (1979) originated the 60 times the bodies of water of 'catastrophic' potential size such as large rivers and lakes. The 60 time the extraction thickness is a conservative generalization that somewhat mis-characterizes the USBM study recommendations.

Prior to acquiring the Flat Canyon Lease, additional mining was conducted in the Upper Huntington drainage in existing leases. The Swens Canyon Ventilation shaft was constructed to facilitate this mining . A pre-subsidence survey was conducted over the area to insure no adverse effects from subsidence would impact road SR-264, the proposed ventilation shaft or the power line. No buildings exist in the area. Plate 4.17-3-1 A illustrates the anticipated areas of subsidence.

In the case of Boulger Reservoir and the Flat Canyon Campground, the existing overburden separating the coal seam from the reservoir is approximately 1,200 or roughly 120 times the extraction thickness. No adverse impacts are anticipated, however the reservoir may be drained prior to undermining as a safety precaution. Any necessary mitigation measures will be negotiated prior to actual undermining of the reservoir being conducted . Special Stipulations #25 and #26 for Coal Lease UTU-77114 (attached to lease in appendix 118-A outlines specific requirements that need to be met prior to undermining. Undermining of the reservoir and campground may occur at a future date.

Special Stipulations for Coal Lease UTU-77114 (#25 - #27) require prior plan approval from the Authorized Officer of the BLM , consent of USFS and other regulatory agencies prior to development of panels that would cause subsidence of the Boulger Reservoir. Specifics of the plan include type of mining , when and how the dam will be taken out of service while undermining and/or subjected to mining-induced acceleration of 0.1 g and greater, and what mitigation measures will be taken to place the dam and reservoir back into full service. Similarly, a plan for undermining of the Flat Canyon Campground will require specific mitigation measures while it is out of service requiring multiple agency approval prior to mining. In addition, a detailed evaluation of the Flat Canyon campground drinking water system will be conducted to assess any future mitigation measures. The evaluation will include a detailed map of the system and any potential mitigation measures. Monitoring of perennial streams within the lease and any associated effects are discussed further in Sections 2.3, 2.7, 4 .7, and 4.17.4 of this M&RP.

INCORPORATED

Revised : 12-30-16 4-94 FEB 13 2017

Div. of Oil, Gas & Mininp

4.17.2 Mining Methods

The mining methods to be used by the Permittee include longwall mining, room and pillar mining with

pillar removal , and room and pillar mining with pillars left in place. Certain room and pillar mining systems are designed to provide full support and will prevent subsidence. Subsection 3.1.5 contains descriptions

of the mining methods to be implemented.

Full extraction areas include room and pillar panels with pillar removal and longwall panels. Subsidence

prediction work has shown the expected maximum planned and controlled subsidence will vary from 0 to 24 feet, assuming that the total cumulative extraction from the three mineable seams will not exceed 30 feet.

4.17.3 Subsidence Effect Prevention Measures It is anticipated that the planned subsidence will result in a generally uniform lowering of the surface lands

in broad areas, thereby limiting the extent of material effect to those lands and causing no appreciable change to present land uses and renewable resources . The Permittee established a subsidence monitoring program in the early stage of mining for use in reviewing the surface effect of mining and as an

aid in futu re mine planning.

In areas where mining related subsidence would damage resources, room and pillar mining methods will be used. Wherever the pipeline and creek buffer zones coincide, creek buffer zone requirements take precedence. Where the yield pillar/barrier system is used, the critical area will not influence the surface. The width of the area of supportive mining is equal to 50 feet (25 feet on each side of the pipeline centerline no surface movement) plus the tangent of 22° draw angle as shown in the 1988 Annual Report and included in Vol. 4, multiplied by the overburden depth of the mined coal bed :

• Nonsubsidence Mining Width = 50 feet + (2 X tan 22° x depth)

The width of the supportive mining area will be adjusted, as appropriate, when future information and

monitoring shows it to be necessary.

The 22 degree draw angle is conservative and conforms to the Permittee's data on permit area subsidence as well as experience from other comparable mining activity in the Wasatch Plateau (Plate 4.17.3-1) .

There will be no mining caused subsidence under either the Electric Lake Reservoir, Upper Huntington Creek and Boulger reservoir, and no mining from which subsidence at a 22-degree (from vertical) angle of draw would influence either these reservoir inlets or the high-water level of Electric Lake Reservoir. Any undermining of Boulger Reservoir will be permitted separately under a specific permit modification. The width of the buffer zone was calculated as follows:

• Buffer zone width = tan 22° x overburden depth The width of the buffer zone has been calculated using the overburden depths to the coal seams. There is a very substantial tonnage of coal which lies to the west of Upper Huntington Creek and Electric Lake Reservoir, which the Permittee plans to mine.

Mains under the Huntington Creek (Drawing 3.1.8-3) will be a full support room anl:N~rp@RA~D These mains will be designed to avoid short or long-term surface affects from mining. Prior to abandonment of these mains, H:B 13 2017 Revised: 12-30-16 4-95 Oiv. of Oil, Gas & Mining

•

failure of the entries, as mutually a reed with regulatory agencies. The

entries in Skyline Mine No.2 will en er the Huntington Creek buffer zone for a

short distance as approved by the Div'sion/U.S. Forest Service

NO mining will be conducted beneath E ectric Lake.

Full extration mining techniques unde the creek buffer zones will only be

proposed if evidence shows surface ef ects, if any, can be mitigated. Full

extraction mining techniques and asso iated mitigation plans must first be

approved by the Division/U.S. Forest ervice.

Drill holes show that there are clay ich shale layers present which will

likely swell into an impervious clay hen wet. This characteristic is expected

to seal possible subsidence cracks to prevent downward migration of water and

subsequent loss of springs and other ater sources based on information

supplied by Roy Full (Volume A-3)and upported by the Burnout Canyon Study

(Appendix 1-A, Vol.2).

Extensive experience with mining-indu ed subsidence at Skyline Mine indicates

the subsidence factor (SF) relative t mining height is as follows:

Overburden 200-500' - SF 0.7

Overburden 500-1000' - SF 0.5

Overburden 1000-1500' - SF 0.3

Overburden 1500-2000' - SF 0.15

Approximately 20-30 percent of the pl nned subsidence will be occurring where

overburden thickness ranges from 500 0 1000 ft. and 70-80 percent of the

subsidence occurring where overburden thicknesses are greater than 1000

ft(3/3/05 M. Bunnell memo). Given th projected mining thickness is 9-11 feet,

and the approximate minimum overburde is 600 feet in the North Lease area, the

maximum subsidence anticipated is les than 6 feet. Drawing 4.17.3-1A

illustrates most of the subsidence wi 1 be in the 2 to 4 ft. range. Areas

identified as having 6-feet of subsid nce were rounded-upward to provide a six­

foot contour line. Six-feet of subsi ence is generally a worse-case scenario.

The subsidence factor identified abov suggests subsidence in the range of

seven (7) feet could be seen in Woods Through 2009, this has been a

conservative factor since the most su sidence that has been noted is

approximately four (4) feet in Winter Quarters Canyon and its tributaries. The

AAI modeling report in Appendix A-1, olume 2 suggest subsidence will remain INCORD0 f? ~TED

less than six (6}feet even in areas w'th 500 feet of overburden.

f; FEB 0 9 2011

Revised: 9-16-10 4-95a

A section of a natural gas pipeline in the Burnout Canyon-Huntington Creek

area was decommissioned in October 2000. Its replacement section was

constructed in the pre-existing pipeline right-of-way on top of Trough

Spring Ridge. Since the Trough Springs Ridge area will not be undermined

again and subsidence from previous mining under this area is essentially

complete, the Burnout Canyon-Huntington Creek portion of the pipeline is

labeled as "old pipeline" on the mine maps and is still owned by Questar.

However, it has been decommissioned by Questar to allow undermining by

Skyline Mine . The future utilization and status of decommissioned portion

of the pipeline is Questar's responsibility.

4.17.4 Mitigation of Subsidence Effects

Surface structures which may be affected by subsidence include the

Permittee's buildings and facilities incidental to the coal operation, the

natural gas pipeline which crosses the coal lease area, and roads within

the area. No additional structures are located within the new UP&L lease

area.

Should subsidence damage any of the surface structures despite the planned

subsidence prevention measures, the Permittee will arrange for their

repair. Any subsidence related damage to SR 264 will be repaired by the

Permittee in accordance with the DOT Subsidence Impact Agreement dated

July 17, 1989 (see Exhibit 1). With the addition of Flat Canyon Lease UTU-

77114, the initial mining plan indicates approximately 4,500 linear-feet

of SR-264 will potential be impacted by subsidence. The overburden ranges

from approximately 700-1,300 feet with the maximum subsidence anticipated

to range from approximately 0.3-0.5 feet. Spread over approximately 4,500

feet, minimal impacts are anticipated. Prior to undermining, the

Permittee commits to coordinating with UDOT to insure repairs are prompt,

and in accordance with UDOT standards.

Hydrologic information during a four year period (1984-1989) at the

Skyline Mine indicates that there is a reasonably good correlation between

the amount of mine water discharged from Mine #3 and the amount of coal

mined (see Drawing 4.11.4-A). The mine water historically encountered in

Mine #3 was produced from the Blackhawk Formation. Data from the approved

water monitoring program Indicate mine dewatering is not affecting any

surface springs or seeps. Water monitoring data suggests the migration of

water through the aquifer in Mine #3 is extremely slow to the extent that

the water should be considered "perched or trapped water." Since the

North Lease mining will be occurring in the area adjacent to the previous

Mine #3 workings and under the same geologic environment, ~~()~~Ft~fED conditions are anticipated.

I-t:B 1 3 2017 Revised: 12-30-16 4-95b

Oiv. of Oil , Gas & Minim'

In 2010 full extraction mining in Woods Canyon was extended Y2 mile

further east into areas with less than 600 feet of overburden. As a

mitigating effort to monitor subsidence, a total of nine (9) piezometers

or shallow groundwater wells have been established adjacent to the creek

starting at the USFS boundary and extending east of the proposed mining.

The piezometers were established to monitor the shallow groundwater

adjacent to the stream to both determine whether Woods Canyon creek is

an gaining or losing stream, and to gauge any flow impacts associated

with mining.

As required in Special Stipulations for Coal Lease UTU-77114 #27, the

stream gradient of perennial streams to be undermined will be monitored.

Monitoring of the sections of perennial streams being undermined using

longwall mining methods will be monitored both before and after mining

takes place, with the information being added to Appendix A-I. The

survey following mining will be conducted within the first year following

complete subsidence. A report providing the pre- and post-mining survey

will be submitted with the ensuing Annual Report. The method of

monitoring will include an on-ground survey using survey-grade equipment

encompassing the length of the stream channel beginning upstream of the

anticipated zone of subsidence, through the subsidence zone, and

terminating downstream of the subsidence zone. If necessary, this

information will be used in any future mitigation with efforts

coordinated through consultation with the Division.

If it is determined that subsidence causes material damage or a loss of

flow in a perennial stream, the Permittee commits to using the best

technology currently available (BTCA)to mitigate the damage. Methods

may include backfilling with surrounding native material, incorporating

bentonite or other water-retaining native material into the backfill,

or possibly even temporarily bypassing/piping flow thf~~O~'RA11:D

areas until mitigation is achieved.

FEB 1 3 2017 Revised: 12-30-16 4-95c

Div. of Oil, Gas & Mining

•

•

•

Coastal States Energy Com any EXHIBIT 1 •• r.tb,idial, 01 The Co .. ,a. COIDOlaho"

175 E. 400 S. • .-3 • Suite 800' Salt Lake City, U 84111

July 17, 1989

Mr. Dyke LeFevre Director. District 4 Utah Department of Transportatio P.o. Box R Price. Utah 84501

Re: State of Utah Highway SR-26 -Subsidence Impact Agreement

Dear Mr. LeFevre:

Since SR-264 traverses area by Coastal States Energy Compa may be affected by subs idence mining operations. This letter obligations and rights of Coasta Coastal' 5 Skyline mining operat if any, on SR-264.

which are proposed to be mined y (Coastal). portions of SR-264 from Coastal f 6 underground coal agreement is to set forth the

with respect to subsidence from ons, and the effects theref rom,

If accepted and agreed by the Utah Department of Transportation {UDOT}, UDOT has no objection to and will allow Coastal's mining operations bing conducted, as proposed by Coastal, within the area of influence of SR-264. In consideration for such authorization. Coasta agrees to repair promptly all damage, such as surface impact. to SR-264 due to subsidence caused by the mining activities t Coastal's Skyline Mines.

If UDOT agrees to the pro lS10ns conta ined herein. please sign all three copies of this 1 tter agreement and return one of which to Coastal.

Very truly yours,

.1/,/ h.--A} 1-_~, -.,-;; J , )_7) -/'7' / ..... l~.," ·1/

f:'/~- :-1' ..". " .. ' /../ ~ .. /.- ,- • _ ......... ---t4Qernai 'S-: Mottensen senior Vice President

VJM/jm/0201c

Agreed and accepted this

Director. District 4

-..)

Utah Department of Transportatio

OfJ'~ , 1989

~J~-:? Howard Richardson Assistant Director Utah Department of Transportation

4-96

Canyon Fuel Company, LLC

A ~oryd __ HoIdIngo, U C

April 17, 2017

Mr. Rick Torgerson, Region 4 Director Utah Department of Transportation 210 West 800 South Richfield, Utah 84701

RE: State of Utah Highway SR-264; Subsidence Impact Agreement

To Whom It May Concern:

Skyline Mine Corey Heaps Gen&,a' Ma1ager He2;;, Box 380 Helper, Utah 81.526 {1!3S} 4t~o ~26 i 8 Fen: (~3:J) 448-2E32

Canyon Fuel Company, LLC (CFC) Skyline Mines is notifying you of the mine's plan to expand mining into Sections 21,28, and 33 in Township 13 South, Range 6 East, SLB&M, and Sections 4 and 5 in Township 14 South, Range 6 East, SLB&M. CFC recently acquired this coal lease in this area, and plans to undermine portions of SR-264 in these areas; specifically in areas north of Boulger Reservoir between mile markers approximately 4.5 to 6 (see attached map). Since SR-264 traverses areas which may be affected by subsidence from mining operations, this letter is intended to identify both the obligations and rights of CFC with respect to subsidence from mining operations, and the effects, if any on SR-264.

If accepted and agreed to by the Utah Department of Transportation (UDOT), UDOT has no objection to and will allow CFC's mining operations being conducted, as proposed by CFC, within the area of influence of SR-264. In consideration for such authorization, CFC agrees to repair promptly all damage, such as surface impacts, to SR-264 due to subsidence caused by CFC as we have done previously on other sections of the road.

If UDOT agrees to the provisions as noted, please sign both copies of this letter agreement and return one copy to Canyon Fuel Company, LLC.

If you have any questions regarding this letter or would like to discuss future mining plans for the above referenced sections, please call Gregg Galecki at (435) 448-2636 or me at (435) 448-2662.

Sincerely,

~e~ Mine Manager, Skyline Mine Canyon Fuel Company, LLC

Agreed and accepted this __ day of ____ , 2017.

Rick Torgerson Director, Region 4 Utah Department of Transportation

INCORPORATED

FEB 13 2017

Div of 1');1 G ~" & 1\'" • o. '-", a~ I'fllnlrlC!

~,

4-96A

4-96B

At this point in time it is difficult to suggest specific

mitigation of impacts or reclama ion on renewable resources

that are impacted by under.mining since we can only assume

those impacts and their effect. Mitigation measures are site­

specific, and will be contingent upon the findings of the

subsidence monitoring program. ubsidence data is available

on Drawing 4.17.3-1 and is updat d in annual reports submitted

to DOGM. Mining in the area has been conducted since 1982,

providing over twenty (20) years of subsidence data. As noted

in Section 4.17.3 and substantia ed within the Burnout Canyon

study (Appendix A-1,Volume 2), t e amount of subsidence is

directly related to surface subsurface geology and depth

of cover. To date, the only are s where mitigation efforts

have been implemented are in ar as where two-seam mining was

conducted. Tension cracks where a barrier

between panels was present in effectively

creating a 20-foot pedestal. ese associated cracks were

mitigated by backfilling using dozer and/or a trackhoe. As

data are collected, methods of itigation will be for.mulated.

This will be done in coordinati n with appropriate regulatory

agencies. Since subsidence may continue to occur after final

mining, the monitoring program ill continue until it is

determined by the Per.mittee in ooperation with the regulatory

agency that it is no longer ed, or subsidence has stopped.

Impacted water rights, if any, ill be replaced as discussed

in Section 2.5.2.

4 . 17 .5 Subsidence Monitor I ng Program 01\1 n!~ '<\IL (~A~~ (~ I\J!I;"~ING

The Per.mittee blish a subsidence monitoring

program using aerial photogr

program developed by the

deter.mine the effects of

Revised: 8-24-05

trics patterned after a

National Forest to

coal mining on surface

4-97

renewable resources and surface improvements. The monitoring program

secures adequate baseline data prior to any subsidence to quantify the

existing surface renewable resources

immediately adjacent to the permit

and surface

area. The

improvements on and

baseline data was

established so that future programs of observation can be incorporated

at regular intervals for comparison. The monitoring program

establishes a system to locate, measure, and quantify the progressive

and final effect of underground mining activities on the surface

renewable resources and surface improvements. The system utilizes

techniques which will provide a continuing record of change over time

and an analytical method for location and measurement of a number of

points over the permitted area. The continuum of data shall

incorporate and be an extension of the baseline data.

A network of control monuments consistent with the desired

photogrammetric map accuracy are being established over both the

permit area and the immediate adjacent areas not expected to be

disturbed by subsidence. The monuments are constructed as survey

control points for monitoring the effects of subsidence on surface

renewable resources and surface improvements (Map 4.17.5-1) The

monuments are located and tied to a state plane coordinate system

which is the same for both the surface and mine control surveys. This

allows the surface survey to be superimposed over the subsurface mine

workings. The monuments have the X, Y, and Z coordinates accurately

measured and established by ground survey methods. During the

photogrammetric exercise, control points are marked with rebar and

white biodegradable sheeting. These will be reclaimed at the

completion of the project as necessary.

The initial aerial photography covers the entire permit area and will

be either color or black and white, flown at a scale such that

elevations to within one foot vertically and horizontally (± 0.5') can be attained by photogrammetric

Revised: 10-1-13 4-98

INCORPORATED

Jt\N 0 3 2014

Div. of OIL Go.s & Mining

methods. It is anticipated th t the nominal or mean scale will be 1:6,000 for a 6" focal leng h camera, unless aerial

constraints such as safety dic ate flying at a high altitude, but will not exceed 1:7,200. his photography was used for constructing the initial basel'ne surface map. It also provides the master base to assist in d cumenting changes caused by subsidence.

To aid in the collection of ad itional base data on surface renewable resources, color inf ared aerial photography (eIR) of

the permit area may be utilize. If this technique is used, the photographs will be of the sam scale as the other aerial photography.

Subsequent annual black and wh'te or color photography for subsidence monitoring will cov r the area mined and the area to be mined in the next 18 months (plus angle of draw). Subsequent CIR photography for monitoring surface resource trends will be flown as needed.

In 2012, a comprehensive revie of the eIR data collected

annually from 2005 through 201 was evaluated by Dr. Patrick Collins of Mt. Nebo Scientific, Inc. The review determined no

adverse impact had been observ in the eIR data. The results of the report, combined with t e intensive riparian study that

is conducted in perennial drai ages support the determination that the eIR survey no longer eeds to be collected.

On all aerial photography for the baseline data and subsequent flights, a photogra hic overlap of 30 percent between adjacent flight lines and an a erage of 60 percent overlap of photographs along the same fli ht line will be obtained. The baseline data will be digitize to show the undisturbed pre­subsided ground elevations and will use a grid with a nominal mean grid scale of 200 x 200 feet. The subsequent flights for subsidence will also be digitized using the same grid scale as

the baseline to show the elevational deviation from the baseline elevations. The digitized information will be submitted annually to the regulatory age cy after subsidence commences.

INCORPORATED Revised: 7-9-12 4-99 7/31/2012

Division of Oil, Gas & Mining

An on-the-ground visual inspecti n will be made of the ground

surface of subsidence areas (inc uding angle of draw)where the

potential for tension cracks or fissures exist. The

inspection will be conducted een six (6) and 12 months

after mining has occurred. information is supplemented

with the annual subsidence repo t and corresponding map

supplied to the Division.

This inspection will attempt to locate, photograph, and

document the presence of subsid nce effects to surface

improvements, tension cracks, f'ssures and other surface

effects.

The subsidence monitoring data ould be used to determine: 1)

the critical width across the p essure arch; 2) the draw

angle; 3) the ratio of observed subsidence to predicted

maximum subsidence (S/Smax)i 4) the relationship between

mining and onset of subsidence nd the correspondence between

the face advance and subsidence profile development; and 5)

the bulking factor.

Table 4.17.SA illustrates

(where single-seam mining

(where two-seam mining

anticipated subsidence

ence points in both Mine #3

curred) and Mines #1 and #2

red, and compares the

4.17.3) with actual subsidence

that has occurred. idence locations used were

located where a creek crosses t e center of a panel. These

sites were used due since there is typically better ground

control in a stream channel ve

related to subsiding streams.

Revised: 8-24-05

a slope, and the concerns

4-99a

Table 4.17.SA

Subsidence Location Calculate Subsidence Actual Subsidence

Mine#3, panel 7R 4.oS-ft 5-ft

Mine#3, panel R6 1.95-ft 2-ft

Mine#3, panel 6R 3.9-ft 4-5-ft

Mine#3, panel R5 3 .. 9-ft 4-ft

Mine#3, Panel R4 3.9-ft 3-ft

Mine#2/1, pan .. 11.o5-ft 12-ft

6L/7L

Mine#2/1, pan .. 14-ft 12-ft

5L/6L

Mine#2/1, pan. 12-ft 12-ft

4L/5L

Mine#2, panel llL 6-ft 6-ft

Mine#2, panel 8L 6-ft 6-ft

Table 4.17.SB cites examples 0 the maximum extent of

subsidence observed at specifi sites within the Skyline Mine

pennit area.

Table 4.17.5B

Subsidence Location Subsiden e Buffer

Angle

Actual Maximum

Extent of

Subsidence i ',: ,,' ',--"" ,~ ,,~ I

"-",' I "~., '.

Mine#3 Panel 7R

Mine#2 Panel 9L

Mine #2 Panel llL DIVr Gf Oii... GAS & r'II1INING

It is important to understand he points of zero subsidence used to calculate the angle of draw are somewhat subjective

due to the accuracy of the sur ey method. The points of zero

subsidence used in these calcu ations are very conservative,

potentially resulting in a gre ter angle of draw than actually may exist. Revised: 8-24-05 4-99b

The following monitoring progr

Canyon Study:

was initiated as part of the Burnout

1.

2 •

3 .

4.

5.

6.

7 •

8.

Description

Install parshall flumes fo

stream flow monitoring as

shown on plate 2.3.6-1.

Select and install monitor ng

for spring flows in the

subsidence areas as shown

on plate 2.3.6-1.

Install subsidence monitor ng

adjacent to stream drainag s

on a maximum 200 ft. cente s

as shown on plate 2.3.6-1.

Points will be 3 1 rebar wi h

no concrete.

Develop summary report of

observed subsidence effect

on stream drainages as weI

as surface and subsurface

hydrology to date.

Monitor stream, spring,

subsidence points -- mont

during field season.

any surface cracks that f

Year-end summary reports

Final report

Evaluation and review

Revised: 8-24-05

Skyline July 91

Skyline July 91

Skyline July 91

Skyline Dec. 91

Skyline June-Nov. 91

June-Nov. 92 June-Nov. 93*?

Skyline Jan. 92 & 93

Skyline Jan. 94

Skyline, DOGM

& USFS

Feb. 94

4-100

4.17.6 Subsidence Control

The Permittee plans to conduct the underground mining operations so as

to prevent subsidence from causing material effect to the surface and to maintain the value and reasonable foreseeable use of that surface in accordance with the preceding subsidence control plan.

4.17.7 Public Notice

Since the surface ownership of the areas of planned subsidence is vested in the United States and is under the authority of the U. S.

Forest Service, the annual subsidence monitoring report will be provided to them and to the regulatory authority.

4.17.8 North Lease

Infrared aerial photographs (CIR) will be taken either in August or September of each year. An interpretation of the photographs will be made and a written report will be included in the Skyline Mine Annual

Report. I f a reduction in renewable resources is noted because of

subsidence, the appropriate agencies will be notified and mitigation measures will be developed.

4.17.9 Reduction of Subsidence Monitoring Program

Mining operations were completed in the southern section of Mine #3

(Panels 3R-7R and 1R NM-6R NM) in August 1996. No adverse effects related to subsidence were observed in the area after 1997. The subsidence monitoring program was terminated after monitoring in 2003.

Mining operations were completed and April 2004, respectively.

subsidence were observed in the

for Mines #1 and #2 in August 1998 No adverse effects related to

area after 2004. The subsidence moni toring program was terminated for this area after monitoring in

2006.

Mining operations were completed for panels 1L-6L in Mine #3 in June of 2012. Subsidence monitoring indicates that subsidence has ceased. The subsidence monitoring program was terminated for this area after monitoring in 2014.

Revised: 8/27/2015 4-101 INCORPORATED

SEP 1 B 201 'V. 01 Oil, Gas & Mining

4.18 FISH AND WILDLIFE PLAN

The Permittee is conducting the Skyline p(oject operations in a manner which minimizes

disturbances and adverse impacts on fish , wildlife, and the related environmental values identified

in environmental baseline studies . The desi ~ n of the Skyline Project incorporates many of the

suggestions and proposals of the various 6nvironmental consultants to provide acceptable

environmental protection features.

4 .18.1 Aquatic Resources - Eccles C eek

During construction activities, sections of Ec les Creek were diverted , channelized and relocated

causing some disturbance of the aquatic ommunities. These construction activities were

conducted in accordance with approved plans and were monitored for impact. The construction

effort also included stream enhancement for tr ose sections which were permanently altered. Post

construction rehabilitation has included reveg tation and other improvements to the riparian habitat.

A more complete discussion of the impact a d plans for the aquatic community can be found in

Section 2.8 - AQUATIC RESOURCES , an in Section 4.19 - STREAM DIVERSIONS. The

revegetation plan is addressed in Section 4. . Hydrologic impacts are discussed in Sections 2.3

and 2.4.

4.18.2 Terrestrial Wildlife Resource

Eccles Canyon Road , which nearly parallel the conveyor route , has a posted speed limit. This

measure seems to minimize the number of . nimal-vehicle collisions in Eccles Canyon. Warning

signs indicating animal crossings are install d at each end of the overland conveyor system. The

Permittee will continue consultation with vari us agencies to determine additional measures to be

taken to reduce road kills of big game.

Power transmission lines for underground ining and related activities in the permit area were

designed and constructed to comply with t e guidelines set forth in "Environmental Criteria for

Electric Transmission System" (USDI , USDA (1970)) . Power distribution was designed and

constructed in accordance with REA Bulletin 61-1 0 "Powerline Contacts by Eagles and Other Large

Birds". Revised 03/26/98

4-102 I ~ .""':( ., • • OJ' _f \..; ~

• Raptor surveys indicate that there may be ra tors nesting in the vicinity of the Scofield Waste I

Rock Disposal site. A raptor survey was conpucted in 1995 by Skyline Mines to determine if

there were any active nests with in a 1/2 mile radius of the disposal site. No nests were found

by environmental personnel from Skyline Min . Another raptor survey was conducted in 2007

for the waste rock expansion site and one raptor nest was identified within % mile. According to

the analysis , the nest has been in place for some time and the raptors have habituated to the

activities of the waste rock site. This nest wil be monitored in spring 2008 for its status.

Results of the status will be reported in the A nual report.

Additional information on wildlife can be foun in this document in Section 2.9 - TERRESTRIAL

WILDLIFE and Section 2.10 - RAPTORS.

The South Fork Breakout is located in an Elkl Calving area. Construction of the face up area

should be done after calving season . The tributary to South Fork is a contributing stream for

aquatic insect drift to the fishery in Eccles Cr~ek. Construction operations were done in a

manner to minimize disturbances and i nfluen~es on the stream.

I

• James Canyon Area

•

Fish and Wildlife Enhancement Measures:

• Woody species seedl ings will be plan ed.

• Seeds and seedlings planted during reclamati n wi ll include diverse palatable species.

• Rocks and/or logs will be placed on rec laim d road and drill pad area wh ich can be used by small wi ldli fe

species as shelter.

• Erosion associated with rills and gull ies wi ll e monitored and repaired as described in Section 4.4.4.

The James Canyon Project construction was performed to comply with the commitments made in

this "Fish and W ildlife Plan".

Revised 12-03-2007

f-103A

F.:l$ 9 2 08

Waste Rock Site

Fish and Wildlife Enhancement Measures: $ Species to be planted and the rates per acre will follow the specifications in Table 4.7-6A. $ Seeds and seedlings planted during reclamation will include diverse palatable species. $ See Section 2.9 for additional discussion of Wildlife at the Waste Rock site.

Winter Quarters Ventilation Facility (WQVF) Fish and Wildlife Enhancement Measures: $Species to be planted and seeded and rates per acre are outlined in Mt Nebo Report (Appendix A-2, Volume 2). will be used in reclamation as outlined by Dr. Shiozawa (Appendix A-3, Volume 2) • Photo documentation of the pre-disturbed stream wcollected for re-construction of the stream bank morphology • The WQVF was specifically designed to be constructed a minimum of two (2) stream widths

from the stream 'channel, thus providing a buffer zone of riparian and other upland vegetation to minimize impacts and maintain appropriate habitat. .

• During construction, operation, and reclamation of the WQVF site, noxious plants invading the permit area will be controlled by hand-grubbing, and/or approved herbicides. Surveillance wi" be monitored annually during the liability period .

NOG Bleeder Shaft Fish and Wildlife Enhancement Measures:

Species wi" be planted and seeded as outlined in Section 4.7 During construction, operation, and reclamation of the site, noxious plants invading the site will be controlled by approved herbicides. Monitoring and treatment will continue annually during the liability period.

Swens Canyon Ventilation Facility (SCVF) Fish and Wildlife Enhancement Measures: Species to be planted and seeded at the prescribed rates per acre are outlined in Section 4.7, Tables 4.7-11A and -11 B. This wi" provide better wildlife habitat in the future . Any areas disturbed along the pipe line corridor needing repair after the first growing season after construction wi" be reclaimed in a similar manner. No enhancement measures are necessary along Swens Canyon Creek. During construction , operation, and reclamation of the SCVF site, noxious plants invading the permit area will be controlled by hand-grubbing, and/or approved herbicides. The areas wi" be monitored annually throughout the liability period

Revised 5-27-16 4-103B

INCORPORATED

JUL 1 9 I:Ul

Div. of Oil, Gas & Mining

•

•

•

4.19 STREAM DIVERSIONS

The objective of the stream c annelization and runoff diversion

channelization program has b to minimize impacts to the

surface water quality of th Skyline project area. Stream

diversions and channelizations were undertaken pursuant to an

approved Army Corps of Engi 404 Permit, and with the

approval of the regulatory a thority and of the Division of

Wildlife Resources. No additio al diversions of Eccles Creek are

planned until final reclamation, at which time the streams in the

portal area will be returned to the surface.

4.19.1 Mine Site Stream D version

The confluence area of the three tributaries of Eccles Creek form

a crowsfoot drainage pattern at the mine site. The combined

drainage area for these is approximately 778.12 acres

(Map 3.2.4-2). The from a 100 year, 24-hour

rainstorm is expected ut 3.50 inches (Section 2, Volume

5). After infiltration surface runoff will be

approximately 0.80 inches on the assumption that the

overland flow from the majorit of the watershed is essentially

non-existent. The resulting peak runoff flow would be

about 419.67 cfs (Section 2, 5). The proposed culverts

are designed such that during the winter months, adequate

through-put spacing remains s fficient even if ice accumulates

inside the culverts.

The culverts for use in the n rthern tributary are 48 inches in

diameter and approximately feet in length to a point of

connection with a 72-inch iameter culvert. The northwest

tributary culvert is 48-inches diameter and approximately 836

feet long. The Northwest culv was extended approximately 100

feet in 1990 to accommodate

area. This culvert connects

The culvert for the southwest

and approximately 846 feet

the expanded North coal storage

into a 60-inch diameter culvert.

ributary is 48 inches in diameter

1 ng, and also connects into the

4-104

•

•

•

60-inch culvert 0 The culvert originates at the

confluence of these two 48- o nch culverts and continues for

approximately 526 feet to the confluence wi th the north 48-inch

culvert. From this point 72-inch culvert extends for

approximately 1,058 feet to a pint beyond the portal area.

The inlet for each culvert w s constructed of concrete wi th a

trash rack installed to preven drift material from plugging the

culverts 0 Riprap was used at each inlet structure to

erosion. A rock structure was constructed, during

construction by UDOT, immedOately downstream of the

structure.

minimize

Highway

outlet

4019.2 Mine Site Diversion Channels

Mine site diversion channels w re designed and constructed around

the perimeter of the disturbed area to prevent overland flow from

reaching the sedimentation pon. These channels were designed to

carry the peak flow resulting from a 10 year, 24-hour precipi­

tation event. The calculati from the channel design and

energy dissipators used on di ches DU-2 and DU-3 are shown in

volume 5 section 50

The channels were placed

shown on Map 3.2.1-1. Ditche

in 1990 to accommodate the

storage area (see Vol. 5

channels are triangular or

Volume 5 gives detailed as-buil

the mine site facilities, as

DU-2 and DU-3 were each extended

xpanded area for the North coal

design calculations). The

apezoidal in shape. Section 5,

information for these channels.

4.19.3 Coal Storage Stream Diversion (RRLO)

To provide sufficient area

mouth of Eccles Canyon, approxOmately

loadout facilities at the

600 feet of stream channel

were relocated to the north, the canyon road. This was

done after receiving appropria e approvals. The new channel was

designed to safely pass the 100 year, 24-hour precipitation

4-105

•

•

•

event. The peak flow expect d will be approximately 1186 cfs

(Section 13, Volume 5). The n w channel is trapezoidal in shape

and 10 feet wide at the with a top width of 19 feet. The

new channel was constructed wi h 20 foot center meanders within a

19 foot wide zone so that the of stream length is minimized

and original gradient is rved. The stream water channel,

with a mean width of 4 feet, as diverted to meander within the

created 10 foot wide channel. Log deflectors, log dams or large

rocks were used to instream meanders. The original

stream channel was 600 feet 1 compared to the new channel of

500 feet resulting in a of 100 feet of stream. The

pre-construction gradient was 0.024 compared to the new channel

gradient of o. 027 resulting an increase of 3 foot vertical

drop per 1,000 feet of strea length. The log dams, 12 to 15

inches high and spaced at 80 t 120 foot centers, prevent washout

of spawning gravels and cause the stream waters to dig pools on

the downstream side. The log ~ms have notched top logs to help

confine the flow to channel during low flow periods.

The log dams are sufficiently low to allow even the highest flow

to pass over the top without fl oding of the channel banks.

The created stream bottom, installed per an

contain a combination of gravels appropriate

approved

for both

plan,

fish

spawning and macroinvertebrat reproduction purposes. Stream

banks were riprapped in potent·al erosional areas with all other

stream bank areas composed of

willows and other scattered tre s.

revegetated with grasses, some

4.19.4 Coal Storage Diversion Channel (RRLO)

The coal storage diversion

carry the peak runoff from

The peak runoff flow is expec

el was designed and constructed to

year, 24-hour precipitation event.

be approximately 18.41 cfs.

The channel is located just s uth of the coal storage facility.

Map 3.2.1-3, Section la, Volume 5 shows the typical ditch design .

4-106

•

•

•

When the coal storage facility is no longer required, the channel

will remain until the area has been stabilized. with the

completion of revegetation stabilization activities, the

channel will be backfilled, top oiled and revegetated.

4.19.5 Reclamation of Dive sions and Channels - Portal Area

Reclamation after cessation of mining will be directed towards

providing the needs of the mac oinvertebrates since this area is

not directly used by the fish f Eccles Canyon. Reclamation will

include removal or burial of he culverts, replacing the stream

into a channel providing optim 1 substrates for macroinvertebrate

production, revegetation of riparian zones, riprapping stream

banks and channels.

Whether a culvert is removed 0

depth that the culvert is

economically removed, it will

be bulk headed and backf i lIed

backfilling measure. The UDOT

be uncovered at the permit bou

buried will be determined by the

If the culvert can be

The culverts not removed will

slurry or other acceptable

in the southwest fork will

stream will enter the

open channel. The open channe will again enter a UDOT culvert

going under SR 264 at the perm t boundary at the east end of the

disturbed area. Any culvert Ie t in place will have a minimum of

four feet of cover backfill ave it.

The natural stream channels disturbed area contain a

good natural supply of high quality macroinvertebrates. The

stream channel stabilization should provide an excellent

environment for the natural drOft of upstream macroinvertebrates.

To assist in the adequacy of the portal area channel

reclamation effort, Maps 4.1 .5-1 through 4.19.5-4 have been

included, which show stream ch nnel cross sections in the three

forks above the disturbed area and in Eccles Creek below the

disturbed area .

4-107

•

•

•

The design of the reclaimed c annels is shown in Map 4.4. 2-1A,

4.4.2-1B and 4.4.2-1B1 and is generally described herein. The

final design, with engineering documentation, is included in the

Engineering Calculation section of Volume 5.

The access roads to both well ouses will be removed and will be

reclaimed to UDOT specificati ns. At a minimum, these access

roads, pads and culverts will e removed, the stream channel will

be reconstructed consistent w' th the existing channel, and the

road slope to the creek will receive the same treatment as now

exists above and below the pad. The culverts at the well houses

will handle the 10 year, 24 storm (Volume 5, Section 3).

The recently installed NOAA weather station enables

collection of precipitation on a 15 minute basis. To

complete determination of runo f coefficients, flood crest gauges

will be installed in at least two of the stream culverts. Flow

will be determined using pipe size and slope. Using the site

specific runoff coefficients, the reclaimed stream channel will

be appropriately sized and prop rly armored.

The North, Northwest and Sout

the forks will be built mostly

Forks and Eccles Creek below

slope between 2 percent and 4

percent. Space drop areas whe e the slope varies from 10 percent

to as high as 16 percent for short distances (Section 18, Volume

5) •

In areas of steep slopes the

large rocks varying from one

Cobbles and coarse gravel will

channel will be rip-rapped with

foot to three feet in diameter.

e placed among the boulders.

The stream channel on the flat er slopes (2 percent to 4 percent)

will be covered with coarse (1-3 inches diameter) and

rubble (up to one foot in dia The bottom of the channel

will be shaped so that the h of flow will approach 11 inches

even during very small flows .

4-108

•

•

•

Riparian vegetation will be e tablished to reference standards

along the stream and along any ut slopes near the stream .

4.19.6 Reclamation of Dive sions and Channels - Loadout Area

The diverted section of Eccles Creek will be left in place after

mining operations are complete, since restoration to the original

channel would only cause unnecessary disturbance. The culverts

into the loadout area will no be removed since these culverts

are replacements for those in p ace prior to construction.

Calculations addressing the dr inage and stability requirements

of R614-301-413 may be found in Volume 5.

The diversion channels will be handled the same as those at the

portal area.

4.19.7 Diversion Channel a Rock Disposal Site

A diversion channel has been in taIled as shown on Map 4.16.1-1B.

The swale to redirect the dra' nage across the access road and

into the original stream channe was constructed of concrete.

The swale outlet was lined with 4 inch x 4 inch or larger rock to

reduce exit velocity of from the swale. Engineering

Calculations for the waste site channel design are

included in Volume 5.

4.19.8 South Fork Breakout

A new ancillary road was constr cted which crossed a drainage way

to the South Fork of Eccles C eek. This drainage way flows in

all but extremely dry years When the creek crossing was

constructed, the top soil was removed with a track hoe to help

minimize disturbance to the itself. The culvert was

placed in the existing

over it. Although this

channe , and then the road fill placed

d culvert was left in place, the

4-109

•

'.

4.19.8 South Fork Breakcut

A new ancillary road was constructed which crossed a drainage way to the South Pork of Eccles Creek. This drainage way flows in all but extremely dry years. When the creek crossing was constructed, the top soil was removed w. th a track hoe to help minimize disturbance to the channel itself. The culvert was placed in the existing,~hannel, and then the road fill placed over it. Although

this road and culvert was left in place, the

• .1-. __

ADDITION TO ·,,··~EXT

Section 4.19 Page 4-109 Sec ion 4. 19. 7 Pag'e-~4 ~'f09, (a) Date 08/11/93

----------------+---! " :,,-., - . 4 .. 1 a 9~ (a)

'" , ,., I~

. - '_k::: (;i.L) Gi~_.s A: -n~~1NG • NOV 2 8 I9g~

DIVISION Of Oil . ~ .. --------______ J GAS & MI~::NG PRICE UTAH

•

•

•

area has been reseeded and will not be used again until final reclamation .

During reclamation , the fill material will be remo ed and then the culvert lifted out of the channel.

Top soil will then be placed back on the disturb d area with a track hoe and the area reseeded .

Although no permanent disturbance to the chan el is planned or expected, if it should occur it will

be rip-rapped with a gradation of material from "to a maximum size of 38" (Section 18, Volume 5).

All culverts used for access to the area will be c mpletely removed from the area during final

reclamation .

This final reclamation plan outlines the minimu reclamation to be accomplished. At the time of final

reclamation , a meeting will be held with the U.S. Forest Service to determine if additional reclamation work

over-and-above that outlined in the plan is need d.

4.19.9 Winter Quarters Ventilation Facil ty

Plates 3.2.4-3A through 3.2.4-3G illustrate the c nstruction designs. Plates 4.4.2-3A and 4.4.2-38

illustrate the final reclamation of the WQVF site. Engineering Calculations, designs, and other maps of

the facility can be found in a report titled "Winter Quarters Ventilation Shaft Pad , Runoff and Sediment

Control Design Report", located in Volume 5, S ction 24 of the M&RP.

The reclamation of the WQVF pad will be straigrlrt-forward , being located on a south-facing slope with only

very minimal impacts to the riparian corridor of 'tinter Quarters Creek. No topsoil in the minimal riparian

areas needed to be removed during constructiom or reclamation of the site - only minor traffic that will be

read ily re-vegetated . Any concerns of excessiv runoff are minimized with the undisturbed ditch on the

existing road located above the site. The road rainage was improved to accommodate a 6-hour, 1 ~O-year

storm event from the majority of the hillside loca ed above the site.

Revised: 12-30-09 4-110

INCORPORATED

JUL 2 9 2010

Div. of Oil, Gas & Mining

•

•

4.20 TRANSPORTATION FACILITIE - ROADS, CONVEYORS, RAIL SYSTEMS

It is the intent of the Permi tee to ensure that the activities

associated with the and reclamation of surface

acreage disturbed for transpor ation facilities be conducted in

compliance with all state and ederal regulations and are planned

in a manner most appropriate or the control and mitigation of

related environmental impacts.

This section describes in detail the major engineering and design

features selected to mitigate ransportation related erosion and

air and water pollution r suIting from the Skyline Mine

operations.

Road design was performed by

engineers

All roads

in accordance with

for the transporta

egistered, qualified professional

all available design technology.

system. of the Skyline Mines

operation are classified primary roads. Reclamation

activities, to be conducted fo each area of surface disturbance,

will follow the applicable pro edures described in Sections 4.4,

4.5, 4,6 and 4.7. In all topsoil and vegetation were

cleared only to the extent ecessary to accommodate road and

ditch construction. Stabilization and initial revegetation of

all cut and fill slopes resulting from road construction was

performed during the first nal opportunity.

4.20.1 Transportation

Eccles Canyon Road

The Eccles Canyon Road has bee

Canyon (Highway U-96) to

U-3l). This road has been in

with the designation of SR-264

improved from the mouth of Eccles

Fairview Canyon Road (Highway

in the State Highway System

nd is the responsibility of UDOT.

4-111

.~ ~,

Mine Portal Road

The mine access road is classified as a primary road and runs from

the mine #3 portal to the maintenance complex area. The

certification statement for t is road is found in this section.

Fiqur •• 4.20.1& and 4.20.1b sho typical cross sections of the mine

portal roads. Since the length of the road is approximately 1,200

feet, no road culverts were ins aIled. As shown in the design, the

steepest portion of the access oad is a 10.0% grade sustained for

250 feet. No other grades on t e access road exceeds 10.0%. There

are no switchbacks on the acces road. None of the access road cut

exceeds 1h: Iv in unconsolidated material and. 025h: 1v in rock. The

access road is be 20 feet wi e with a 3 foot height berm and

concrete jersey barriers at th shoulder. The road is flat with a

drainage ditch against the hig wall. The drainage ditch has been

designed to safely pass the peak from a 10 year, 24 hour

precipitation event (Section ,Volume 5). No trash racks and

debris basins have been led, as the ditch will be cleaned

periodically. The road faced with crushed gravel and tar

sands. Once mining is comple ed, the road will be topsoiled and

terraces will be constructed t prevent soil erosion.

Other roads within the portal a ea are shown on map 3.2.1-1. These

roads provide access to the mi e portals, storage areas and access

to various buildings. The ertification documents for these

primary roads are found section.

water Tank Access Road

__ t'Jt'~C1J VB: Access to the water tank area ·s via utah State H ghway SR-2Q

Breakout Area Access Road JAN 1 2 lY95.·" The ancillary road which was onstructed to obta ess to he

breakout area in the South Fo k of Eccles creek-~N~diPJa~ir~~d

during final reclamation. Aft r the face up area has been

R11/14/94

4-112

reclaimed, the new ancillary roa , the small opening at the mouth

~ of the canyon and the road wher the topsoil was stored will be

returned to the approximate ori inal contour and seeded with the

~

•

approved seed mixture.

The access road up the side cany n will be reopened to accomplish

final reclamation work at the b eakout area. After reclamation

work is completed at the breakou area, the road will be returned

to approximate contour and seede with the approved seed mixture.

All culverts and the trash rack u ed in the project will be removed

from the area. All disturbed ar as will be seeded as outlined in

Section 4.7.2.

The road from the Forest boundar to the mouth of the side canyon

will be ripped, outsloped, water arred and blocked so that vehicle

traffic cannot use the road.

Waste Rock Disposal Road

The access roads to the disposa site are classified as primary

roads. The certification docume t for this road is found in this

section. It is approximately 3, feet long of pre-existing road

and 700 feet of newly construe road. The pre-existing road

which was up graded by spot surf cing with 211 minus pit to provide

a total graveled surface. The gavelled surface is approximately

16' wide. The new road will be graveled surface for a width of

30 feet. A guard rail will be laced on portions of the road as

required by MSHA. Drainage ditches and cross drains were

constructed to safely pass the d signed storm (see Vol. 5 Section

14) . This road is maintained on a routine basis with a road

patrol.

"~-'l

'j IS~1\J i

4-113

R8/27/98

Ie

4.20.2 Overland Conveyor Belt

The locatiOD ot the pipe convoyor trusses on the upper portion of the conveyor is on a bench o]~ the north slope of Eccles Canyon,

while the lower portion is i.upported by towers and trusses on

natural ground slopes. The s~eepest portion of the pipe conveyor

"

CHANGES TO TEXT

Section 4.20 Page 4-113 Sec~ion 4.20.1 Page 4--113 (a) Date 08/1:/93

__ --------------r--~.-~ RECEi\IED

1 I

NOV 2. 8 1994 1

'~i' - DIVISION Of OIL "j.~ tAS & Mlt\:NG PRICE Ul~H I , -

l I >

j i ! I

I

.. ~,

-- " 4-113 ( a) , r- ~, - .~.", . ~ .- , , ~

; i ! , ! c; I r

.-.-~ I --.

-------_._-----_.,.....!.-

is a negative 14.0 percent gr de. The average negative grade of

the conveyo~ route is 6.0 perc nt. Cut slopes along the route do

not exceed lb:lv in unconsolida ed materials and 1h:4v in rock. As

part of the air quality control program, the belt system rolls into

a tube and there are dust colI ctors at each end of the system to

reduce fugitive dust.

4.20.3 Railroad System

The grade of the railroad does not exceed 3 percent Cut slopes do

not exceed 1h:lv in unconsol'dated materials. Vegetation was

cleared only to the width n cessary to accommodate the track

ballast and associated ditch c nstruction.

The Denver and Rio Grande Wes ern Railroad Company designed the

rail haulage system and ensure that no refuse coal, acid producing

or toxic material will be us d in the rail ballast which will

contaminate surface drainage. he rail haulage system was designed'

to maintain the water qualit of runoff from the facilities in

Pleasant Valley Creek.

4.20.4 Loadout Area

The loadout area roads are classified as primary roads (see

engineering certifications att ched to this section) and are shown

on Map 3.2.1-3. I'iqure 4.201& and 4.20.1)) show typical cross

sections of these roads. The e are no switchbacks on any of the

roads. None of the

material and O.25h:1v in rock.

exceed 1h: 1v in unconsolidated

The roads are typically 20 feet

wide with a 3 foot high berm at the shoulder where needed. The

roads are sloped so that water will stay on the disturbed area and

be directed to constructed dr inage ditches. N~t'}leffVE:racks have

been installed as the roads ar periodically a1n ained. e roads

are surfaced with crushed gra el and or asp a~N 1 011Sii5m' ing is

completed, the road will topsoiled a ces ill' be

constructed to prevent soil e osion. -~DMSJONOn..GASAMiJJ4/94

4-114

4.20.5 Winter Quarters Ventilation Facility Road

The pre-existing road in Winter Quarters Canyon is classified as an ancillary road based on the following criteria: it is not used to transport coal or spoil; it is not used for access or other purposes for a period in excess of six months; and it will not be retained for a specifically approved postmining land use. The access is primarily across private land. Although improvements to the road were made by the Mine, the improvements were included in the easement of the lease and will not be altered during reclamation.

The approximately 450 foot access road built for the Winter Quarters Ventilation Facility pad will be removed during reclamation. See Plates 3.2.4-3b and -3e for detailed road illustrations and Plates 4.4.2-3A and 4.4.2-3B for reclamation details.

4.20.6 North of Graben (NOG) Bleeder Shaft Road. i,

I The NOG Bleeder Shaft access road is classified as an ancillary road since 1) it is not used to transport coal or spoil: 2) it is not used for access or other purposes for a period in excess of six (6) months; and 3) it will not be retained for a specifically approved post-mining land use. The access is located on land exclusively managed by the US Forest Service. The approximately 780-foot road built for the NOG Bleeder Shaft will be removed during reclamation. See Plates 3.2.4-5A through -50 for detailed road illustrations and Plates 4.4.2-5A and -5B for reclamation details.

4.20.7 Swens Canyon Ventilation Facility (SCVF) Road

Both the pre-existing and new access road in the SCVF area are classified as ancillary roads. The pre-existing road will be slightly rerouted while the SCVF is functional, but will be re­established in its original location at reclamation. The approximately 900 foot access road built for the SCVF pad will be removed during reclamation. See Plates 3.2.4-4A, and -4B for detailed road illustrations, and Plates 4.4.2-4A and -4B for reclamation details.

Revised: 5-27-16 4-114(a)

INCORPORATED

JUl 1 9 llll'

Div. of Oil, Gas & Minmp

•

•

•

SKYLINE MINESITE AN RAILROAD LOADOUT AREA ROADS

I, William W. Shriver, hereby do ce tify that all operational roads at the Skyline Minesite and Railroad Load t areas are primary roads as defined in R6l4-30l-527.l20 and have the foll ing characteristics.

1. All roads are located, in so far as practical, on the most stable surfaces and are built for double lane traffic.

2. All roads are surfaced with a variety of materials including asphalt, concrete, tar sands, crushrock, and pitrun rock. These surfacing materials ar sufficiently durable to support the traffic using them.

3. All roads have adequat drainage to direct the surface runoff into designed drainage ditches and natrual channels.

4. All roads are routinel maintained to repair any damage to the running surface and to keep the drainage system functional.

5. The grades of the roads varies from level to a maximum pitch that does not exceed 15 per ent.

6. All road cuts and fills have been stabilized as far as practical .

William W. Shriver Registered Professional Engineer Utah Registration No. 8632

4-115

•

•

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DISPOSAL ACCESS ROAD

I, William W. Shriver, hereby do ce tify that the access road to the Scofield Rock Disposal site is a primary roa and has the following characteristics.

1. Is and already existin road which is located on stable areas, and will not be reclai ed.

2. The road has been upgr ded to a double paved road and has been surfaced with pit run ock. This surfacing is sufficient to handle the trucks haul ng material to the disposal pit. (A short section is narrow but as good site distance).

3. The road is crowned an has designed drainage ditches with cross drains at strategic 10 ations to direct surface run off into natural channels. Out alls of all cross drains are rip rapped.

4. The road is routinely aintained to repair any damage to the running surface and to keep the drainage system functional.

5. The grade of the road aries from level to a maximum pitch that does not exceed 15 per ent.

6. All road cuts and fill have been stabilized.

William W. Shriver Registered Professional Engineer Utah Registration No. 88632

4-116

::::0 ~ I

'-....._ 01 ~ (IJ ~

--........... l.D ~

e • PRIMARY ROAD - TYPICAL SECTION

'l

-t-__________ ----- ~t ~~~~ -.;~I--;~~j, ..

2-4" -CRUSHROCK,ASPHALT, OR CONCRETE SURFACE ON COMPACTED SUBGRADE

~

~ ~

? C)

~ > ~ s: ~

'-1> ! fT. Z ';~

/"'i .- tr. ('j

!"'\..:) ~ -

MINESITE AND RRLO PRIMARY ROADS lyriCAL SECTION

e

- - - - - - - -\ ~ATURAL GROUND SLOPE

Utah Fuel Company A SUBSIDIARY or TH£ COASTAL CORPORATION

ROAD TYPICAL SECTION

11/14/94 4 . 20 . 18

1~4

::::0 -P>-I

------"~

------"~

~Q) ------" » -P>-~ 1O -J:::..

_ -" PRIMARY ROAD - TYPICAL SECTION

~ ~ ~ -- -- -- __ __ / 4' ~ CUT SECTION -±-EMBANKMENT SECTION

"'" 'Y4' ~ ~4'1 ~:'% I ~:~ I

~ 1 L" I -- '.>Cd' r ,I, ' , 1 - -------

---2-4" -CRUSHROCK,ASPHAL.,

i ~

.It C ~ > ~ :: ~

SURFACE ON COMPACTED SUBGRADE -

c.. l> • ?-¥'"

:z: ~-: ..;:..

.- 5 r"\:.l -' - .<" ....0 ·m '" t .. c..n

MINESITE AND RRLO PRIMARY ROADS TYPICAL SECTION

"----

6 ~" "~ ~ I. Utah Fuel Company " ,./ ,:?,~~;'" A SUBSIDIARY Of TJ-I£ COASTAl CORPORATION

I ROAD \i L.(~7~/, ,. :. : '..::;,'" J/_. 5"~' ., / I'!I TYPICAL SECTION . \.1 / " II] V" ., L

I'i 1 t' of v'\ 1'-~-~ I K. zoeru OMIN BY:

~: 11/14/94 4 . 20 . 1A 1"-8'

-

•

•

•

4.21 RETURN OF COAL PROCESSIN WASTE TO ABANDONED

UNDERGROUND WORKINGS

On occasion, the Permittee may utilize off-sit coal processing facilities as a part of the Skyline

project. If processing is conducted at a facili located closer to the Dugout Canyon Mine than

Skyline Mine, the reject from processing may e disposed of at the Dugout Canyon Mine Waste

Rock site or returned to the Skyline disposal s teo This process is noted and approved in the

Dugout Canyon Mine M&RP. Therefore, ex ess spoil, mine development waste, coal waste and

sediment pond waste will be deposited at an a proved waste rock disposal site - whether near

Scofield, Utah or near Wellington, Utah, resp ctively.

Revised: 03/26/07 4-117 JRATED

APR 1 0 2007

... ·v fOIl S & Mining

4.22 AIR POLLUTION CONTROL PL N

Prior to any construction eff rt at the mine site Permittee filed

an application for Preconst uction Review and Prevention of

Significant Deterioration (PS ) with the EPA Region V,III office

and a Notice of Intent Construct with the Utah Air Conservation Committee. All equested approvals were obtained as

required.

Approvals for subsequent modi ications have been granted through

Approval Orders issued by Division of Air Quality. The

current Approval Order,

previous approvals. A

Exhibit 4.22-1.

dated September I,

copy is attached

1992, supercedes all

to this section as

The submitted

fugitive dust

application

emissions Emissions reports, as

Conservation Committee in

PSD

the

are

ac ordance

review isolated potential

principal air pollutant.

submi t ted to the ut ah Ai r

with Section

Emissions

26-13-23,

from the

Utah

coal

annotated, the requirements of

1953, as amended.

reduced by the

run-of-mine coal.

moisture

han ling operations

(a proximately 10%)

4.22.1 Fugitive Dust Sou ces

are significantly

inherent in the

The following sources of dust have been identified:

1.

2 •

3 .

4 •

Conveyors and Chutes

Crushers and sizing quipment

Truck Dumping

Silos

4-118

5. Stockpile Surfaces

6 • Equipment Activity

7. Front-end Loading

8 . Truck Travel and Unp ved Roads

9 . Mobile Equipment

Emissions factors used in pre aration of the annual reports are

taken from EPA publication P-42, Section II, 5/83, or from

information provided by Bureau of Air Quality personnel.

------)

}

j MAR 231993

I UTAH DlVlSlON On., GAS AND MINING

!

4-118(a)

•

•

•

4.22.2 Description of Emis ion Sources and Controls

1. Conveyors and Chutes

All permanent conveyors are fully covered and originate and

terminate either underground 0 at facilities equipped with dust

control. Open conveyors are used infrequently.

either adjustable or are set at minimum drop height.

2. Crushers and sizing equipme t

Chutes are

Prior to distribution the coal is passed through a single crusher

facility. Emissions from the crushing operation are limited by

the use of a baghouse for dust control. Stoker coal is screened

out at the railroad loadout silos. Fugitive emissions are

limited by the use of a baghous .

3. Truck Dumping

That portion of the coal m ved by truck is handled almost

exclusively by bottom dump trailers which reduces the coal drop

height. The trucks routinely haul 40 tons per load, however,

during certain inclement weather conditions, the trucks may use a

single trailer which reduces t e load to 20 tons. Truck dumping

at the site is normally to a g izzly at the railroad loadout site

which feeds the silos, but be into a stockpile during

overflow and emergency when a mechanical/electrical

condition prohibits the use of he conveyor system.

4. Silos and Bins

Several silos are used in the oal handling operation. Coal from

the mine is stored in an 8, oo-ton capacity run-of-mine silo

pending transfer to the facility. Coal from the crusher

is currently moved to a capacity tipple bin. (After the

canyon conveyor is completed, t e flow of coal through the tipple

bin will be greatly reduced.) Co"al awaiting train loadout is

4-119

•

•

•

currently stored in two 15,000 ton capacity silos. A 22S-ton bin

is located at the train loa for surge control. Fugitive

emissions from all of os and bins are controlled by a

baghouse at each silo.

5. stockpile Surfaces

The mine plan has been approv d permitting open storage of coal

at two sites on the mine prope ty and one at the railroad loadout

area. These stockpiles d as surge control for those times

when production exceeds the i ediate demand. The coal for the

North coal storage area normal y is transported to the area via a

conveyor to a stack tube, is reclaimed with underground

feeders and a conveyor. Th South coal storage area is an

emergency area and will not be used, except when a

mechanical/electrical conditio prohibits the use of the stacking

or reclaim system in the North oal storage area.

While stockpiles are normally usceptible to wind, site specific

weather data (Radian Corporati 1979) indicate wind veloci ties

at Skyline lack sufficient magnitude to create a problem.

6. Equipment Activity

Heavy equipment, such as front end loaders, used in the movement

of coal causes some emissio s from wheel contact with dry

surfaces. Only the emission from such heavy equipment are

monitored. No attempt is mad to analyze emissions from light

vehicular activity.

7. Front End Loading

Coal from the South coal storage stockpile is loaded into trucks

by front-end loaders. Coal i the North coal storage area will

normally be transferred by co veyor belt; however, in emergency

conditions, when mechanical/e ectrical breakdown prohibits the

use of the reclaim system, 1 may be loaded out of this pi Ie

4-120

•

•

•

wi th a front

rushing air,

end loader.

displaced

emissions. These emissions ar

of the coal.

Ie drop height is minimized, up

coal, tends to cause some

low due to the inherent moisture

8. Truck Travel on Unpaved Roa s

Normal movement of coal by tru k from the tipple loadout and the

movement of coal at the South oal stockpile is over some unpaved

roads. Truck wheels disturb t e road base silt, creating minor

fugitive dust emissions.

9. Mobile Equipment

This category includes

equipment. Engine emissions

are not quantified.

emissions from heavy diesel

small gasoline powered vehicles

4.22.3 Air Quality Contr 1 Monitoring

The Permi ttee contracted wi th Radian Corporation to prepare the

baseline air quality study fo the mine area. A copy of the

Radian report can be found in A pendix volume A-I.

The air pollution control plan is based upon the requirements of

the Bureau of Air Quality and upon preventative measures

initiated by the operator.

The following describes the Permittee's ongoing and proposed

Monitoring Programs.

4.22.4 Operational ures and Monitoring

To achieve minimal emissions t e following operational steps will

be taken:

1. All emission control

maintained and operated.

ent shall be properly installed,

4-121

•

•

•

2. No visible emissions from any point shall exceed 20 percent

opacity as measured by 40 FR 6e, Appendix A, Method 9 or as

required by the Utah Division of Air Quality.

3. Mine personnel shall be ce tified annually to measure opacity.

4. Normally coal shall be transferred primarily by covered

conveyor, except lage will be used for the South

Coal stockpile operatio, when a mechanical/electrical

condition prohibits the use of the North coal storage area.

The use of open conveyors shall be minimized.

5. Water or chemical

unpaved roadways as requir

sprays shall be applied on

meet opacity limitations.

The overland conveyor is belt system, and is an extremely

clean system as the coal pletely enclosed. Dust collectors

are located at the loading a d unloading areas to capture any

potential fugitive dust. Any future air quality monitoring will

be conducted as requested by t Division of Air Quality .

4-122

c

Dea f . T ),lor:

R

cc: Southeast m lah Di~trici H lIth De artm 'nt

•

G t engm t1 r. Pleas dir

reached at (

o

'v. of 0'1, G s

Ul H

......... ,._ ... ta a

ir Q . lity

o

• p

• ~.I\!~ ? G 2008

i'. fO'I,

p

•

J) 2) 3)

)

Ecc

Na.tl llal Ambl flt Ai,. Qualit> Standard. o\r.llAQS for all

= 17.64, 0 = 2.22 0 = 7.2

R %

in tons l' r year, ()C:;;; 1.0 , nd

4526

Univers I nmsvers Mer ator M) C finale Sy~tcm: lJTh.1 atum NAD21 .392.5 kil m~ler NOl1h r\g, 482.7 omClc~ stingt Zonl: 12

3.

s.

6.

•

•

009

o

ceeded wilh ut prior apt r v II in accord ce

Skylil c in acc()fd~ e n purs:uant to Notic at 11 [ t; rt(

.2003 .

•

•

•

DAQE­Pai)c"

1 •

1.

14.

9200703

D.

F. . ge i1

J. dust hi a ] pre. so

hy the E~ecu1'v cr'I::!tary.

ntr lied by two b llHJse~, Day crated when II - coal heing

it)' readings Jt d 0%.

17. in op.;:~1ton

1 _

B.

E.

F.

R

19.

CO la' in

-pH

om the up r elevation stockpile

pile

~,1 '\'!') .., A 20nQ L .. ~H t~ l) UU

•

24. of fugitive du { as dry

2 .

27 . At all

• 2. I'ies. ntaric ~ 'lLng aml

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for COl pI iance wi h all oth r

• M.\n 2 D 2008

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A. B­e..

E. E

I it (VI ) e J . ss ionl for thO SOlJfC (Sky ine IVfine) ar currently ca lculat d a

Pl ........ ........ ............. .................... ................ 91 SOl ...... .... ................................. ..... ....... ........ .. 2.22

Se~ -tUl)'

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4.23 ALLUVIAL VALLEY FLOORS

Introduction

The loadout area could potent classified as an alluvial

valley floor even though has no agricultural valley.

Therefore, under the provision of R614-302-323.l00 the following

information is submitted as documentation that the area is

neither arid nor semi-arid an consequently does not require a

special permit for coal mining activities.

4.23.1 Climatological C nditions

Figure 12 of Jeppson et a1. (1968) indicates that the normal

annual precipitation in the S permit area varies from 25

inches at the mouth of Eccles Canyon where the coal storage and

unit train load-out facility i located to over 30 inches at the

portal area. Altitude appears to have a large influence on

precipi tation (Mundorff, wi th the higher elevations

experiencing more rain and sno Site specific precipitation

records are available to Clear Creek (latitude 39 0 39', longitude

1110

09', elevation 8,300 feet) and Scofield (latitude 39 0 44',

longitude 1110 09', elevation 7,700 feet previously known as

Winter Quarters), and recently at the Skyline mine portal area.

As shown in the annual summar of NOAA Climatological Data for Utah, the long-term annual mea

1956 was 21.65 inches, and

Scofield (Winter Quarters)

precipitation at Clear Creek in

he mean annual precipitation at

1893 and 1924 was 19.46 inches. These amounts corres ond qui te closely to the values

shown on maps by Jeppson et. a1. (1968) although they are

slightly lower than Jeppson's v lues. This fact seems to confirm

that the generalized precipitat"on data given in Jeppson et. ale

(1968) are quite accurate relat ve to the vicinity of the Skyline permit area.

Figure 25 of Jeppson et. ale (1968) indicates that annual

potential evapotranspiration in the permit area varies from about

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17 to 19 inches, with the rates being at the lower

~ elevations. Because preci itation significantly exceeds

~

~

potential evapotranspiration ideal or upper limit of actual

evapotranspiration), it is definition not reasonable to

classify the climate of the are as arid or semiarid.

4.23.2 Consumptive Use

As previously stated, the majo drainages in the Skyline permi t

area are Eccles Canyon and Huntington Creek Canyon. There are no

known flood irrigation system in drainages similar to these

drainages in the general area f the Skyline Mine. The lack of

flood irrigation practices is d e to several factors, including a

very short growing season, gradients of canyon floors,

shallow soil, and the of precipitation. Flood

irrigation practices in the drainages associated with the Skyline

property are restricted to the lower elevations where conditions

are more favorable.

vegetational consumptive use

paragraphs.

s as described in the following

Silver sagebrush (~~~~~~~~~ and various grasses and sedges

dominate the small alluvial of the Skyline permit and

adjacent areas. Data Sturges (1977; see Table

4.23.1) indicate that big agebrush (Artemesja tridentata)

consumptively uses an average f 13.8 inches of water annually.

Sturges has suggested average values presented in Table

4.23-1 be increased by 20 perc nt to reflect climatic differences

between the areas and the fa t that silver sagebrush commonly

extends its roots below the table. Thus, the sagebrush

portion of the riparian i ties in the Skyline permi t area

can be expected to consumptivel use 16.5 inches annually.

The SCS-modified Blaney-Criddl

Service, 1970) was used to

grasses in the riparian zones

method (U.S. Soil Conservation

the consumptive use of

f the pro pe r ty are a . No est i ma...::-tJ~~:----__ -----c __ ---

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~~ was made of water used by the sedges because of their lower use / -~--.... . •.. -" .... _--,-" ......

relative to the grasses. For he purposes of calculation, it was

assumed that the pasture gra s crop growth stage coefficient

curve given by the U.S. Soil Conservation Service (1970) would

adequately describe the wate use condition of the riparian

grasses. Further, a conservati e growing season of June through

October was assumed. The data re presented in Table 4.23-2.

4.23.3 Conclusions

Normal annual precipitation the Skyline permit area varies

from 18 to 30 inches. Annual onsumptive use of water by native

riparian plants in the area va ies from less than 13.1 inches for . 7 ... ~~/C/;J ~-------'-'-

. sedges to approximately 16. inches for silver sagebrush.

Because of the large differen e between precipi tation and water

use, the area cannot be classif ed as arid or semi-arid .

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Ye..aI:.

1969

1970

1971

1972

1973

1975

4.23-1

CONSUMPTIVE USE OF WATER BY BIG SAGEBRUSH

(FROM ST RGES, 1977)

PRECIPITATION SOIL MOISTURE DEFICIT

mID inches .c..m inches

116 4.57 24.6 9.69

161 6.34 20.5 8.07

77 3.03 22.1 8.70

121 4.76 20.6 8.11

137 5.39 29.3 11.54

58 2.28 25.9 10.20

Average

4.23-2

WATER USE

(inches)

14.26

14.41

11.73

12.87

16.93

12.48

13.78

CONSUMPTIVE USE CALCULAT ONS FOR RIPARIAN GRASSES IN

THE SKYLI AREA

t* p** ** Kt K U c Month (2

June 52.1 10.06 0 92 0.59 0.54 2.83

July 58.7 10.19 0 92 0.70 0.65 3.86

August 57.7 9.53 0 91 0.68 0.62 3.42

September 50.5 8.38 0 87 0.56 0.49 2.06

October 40.7 7.76 0 79 0.39 0.31 0.97

Total 13.14

*Clear Creek, Utah station (fro Utah Division of Water Resources,

1975)

** From U.S. Soil Conservation ervice (1970)

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1. Jeppson, R. W., G. L. Ashc oft, A. L. Huber, G. V. Skogerboe, and J. M. Bagley, 19 8. Hydrologic Atlas of Utah. Utah Water Research Laboratory and State of Utah Department of Natural Resources. PRWG35-1. Utah State University. Logan, Utah.

2. Mundorff, J. C. 1972. Rec nnaissance of Chemical Quality of Surface Water and FI vial Sediment in the Price River Basin, Utah. Utah Department of Natural Resources, Division of Water Ri hts, Technical Publication No. 39. Salt Lake City, Utah.

3. sturges, D. L. 1977. Soil Moisture Response to Spraying Big

4 •

5.

Sagebrush: A Sev n-Year Study and Literature Interpretation. USD Forest Service Research Paper RM-188. Rocky Moun ain Forest and Range Experiment Station. Fort Collins, Colorado.

U.S. Soil Conservation Ser ice. 1970 (revised). Irrigation Water Requirements. U.S. Dept. of Agriculture. Technical Release No. 21.

Utah Division of Water Res of the Price River Resources. Salt Lake

1975. asin. Utah ity, Utah.

Hydrologic Inventory Department of Natural

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4.24 SUPPORT FACILITIES NOT LO ATED WITHIN THE PERMIT AREA

The mlnlng operation plan

construct any addi tional supp

designated permit boundaries .

not require the Permittee to

facilities located beyond the

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4.25 EXPLORATION

All exploration for coal sha 1 be performed according to an

approved exploration plan. Th Permittee will comply with all

state and federal laws and regulations applicable to coal

exploration activities.

The Permittee began explorator core drilling during 1979, with

an exploration plan approved by the Area Mining Supervisor of the

United States Geological Surve and by the United States Forest

Service. Drill logs from

included in Appendix Volume

Other than core drillin ,

1979 and previous drilling are

methods utilized included

high-resolution seismic, resis ivity - IP, magnetometer, VLF-EM,

and magneto-tellurics. rmittee will continue to utilize

such t~chniques as approved by roper regulatory authority .

4-129