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NOTICEOF INTENTTO COMMENCE MININGOPERATIONS KENNECOTTEXPLORATIONS (AUSTRALIO LTD. BARNEYSCANYON PROJECT SUBMITTEDTO UTAHDIVISION OF OIL GAS AND MINING

KENNECOTTEXPLORATIONS (AUSTRALIA) LTD. 1515 MineralSquare Saft Lake City,Utah 84112

KENNECOTT'S e EXHIBIT o Docket N ,r-*t Cause No. M-035-009" TABLE OF CONIENTS

PAGE#

Form MR-MO

1.0 Inboduction 1 1.1 Locatios I L2 Land Ownership 2 Lz.t Srrrf;& Omershio 2 L22 SubsurfaceOum'ership 4 13 l-and Use 7 L.4 Existing Facilities 7 15 Mineral Exploration 7 1.6 Utilities and Accass 8

Slte Description. 9 2.1 Geologr 9 2.L.L QeologrcS-rlti9g . 9 2.t2 Geologyueorogy ofoI Mii-eralMtneral Deposits 11 2.t3 lupsryfgceSubsurface GeologGeoloqv of Process FacilitiesFar Site L2 2.1.4 Scisnicity. 2l 22 SurfaceWater Hydrologl ?2 23 Groundwater HydroloeY 25 23.1 Regioial Aqlifer Characteristics E 232 Local Recharse Characteristics 26 233 lncal Aquifer- Characteristics 29 23.4 Bascline Groundwater euality 33 2.4 Soils v 2.4.L fiOnicat'Apnroach v 2.42 loil Qpgs ..' 35 2.43 Topsoil Quality 39 4L 43 4 6 {I 48 2.6 Wildlife 49

3.0 Operation Plan 51 3.1 Descriptionof Mineral Deposits 51

O REVISED9.29.89 TABLE OF CONIENTS CONTINTJED o PAGE#

MiniDg 51 32.1 MiniBg Opcrations 52 322 Mine Pit Configurations 53 323 Pit Slope SrabilityAnalltis 56 33 CtushingScreeningConveying and Stockpili"g 56 3.4 I*aching 62 3.4.1 l-each Pads 63 3,42 Solution Conrcyances. 70 3.43 Solution Posds 7t 35 Lcach Solution Processine . 75 35.1 Carbon AdsorpEon 75 ?5_.?Carbou $trippi"g . 78 1{q Electrowinnidg 78 35.4 Carbon Rsseieration 78 355 Gold Refinl,ag 78 3.6 AnciUaryFacilities 80 3,7 Waste Disposal 80 3.8 Production Sc,hedule 80 3.9 Topsoil Maaagement 81 3.10 Orcrburden Disposal 84 3.11 Evaluation of Materials Toxicity 85 3.12 Runoff and Serliment Control 91 3.r|l Rgnoff !6lrrng Esfim3ggs 91 3.L22 Operational Runoff Control y2, 3.123 Operational Scdimcnt Coutrol 96 3.li} Disnnbcd Acre4ge 99

Impact Assessment 102 4.L SurfaccWater t02 4.2 Groundwater 103 43 Soil Resources 104 4.4 Critical Wildlife Habitats 104 45 Ait Quatity. 105

REVISED9-29-89 TABLE OF CONIENTS CONTINT'ED

PAGE#

4.6 Public Health and Safety 105.1

5.0 Rcclcnadon Plan 106 pssl-rnining 5.1 knd Use 106 52 Demolition and Disposal 106 52.1 FacilitiesRemoval 106 5-.22 Dsmolition Debris Disposal 107 523 HazardousSubstances' 1ffi 53 Rcgra

55 Seedbed Preparation 11:}

5.6 Seedlvlirure 113

5.7 Seedi"gMetbods 120

5.8 Fertilizationuuziauon andanq MMuIcuIIlqulchine . 72t {.q.1 fgltilizafies of Topsoiled Areas LzL l.q2 Fertilization of No'u-Topsoiledarcas 722 5.8.3 Mulchi'g 122 Surface_W_ate1 Hy&ology 6ad gg.tirnsnt Control 123 5.9.1 Drainage Plan L23 5.9.2 Sedi-eat Control Structures 12!!.1

Requests for Varianccs LU 6.1 VarianceRequest &om Rule M-f0(3) 7Zl 62 VarianceRequest from Rule M-10(4) t2A 63 VarianceRequxt &om Rule M-10(t 125 6.4 Variance Requesrfrom Rule M-10(g) ,26 6.5 VarianceRequest from Rule M-10(12) 726 6.6 VarianceRequest &om Rule M-10(li}) rTl 6.7 VarianceRequest uo- *urfry,,log? lIl "o*rrooS REVISED9.29.E9 o CONTINT'ED

7.0 Recle'-a66o Cost Estimate 128

E.0 Refercncts 130

LIST OF TABLES

PAGE# Table 12-1 Surface Ouncnhip 4 Table t2-2 Subsuface/Miaerals Owuership 5 Table 2-$1 Permeability of Lcach Pad Arca Sruficial Soils n Table 23-2 Permeability of l-eacb Pad Area Alluviun 28 Table 233 Water Table Deptbs in Project Area 32 Table 3.9-1 Topsoil Yiel& 83 Table 3.11-1 Rcsults of Total Metals and EP Toxicity Anal1nisfor BC Sanples 90 o Table 3.11-2 Resultsof Total Metals and EP Toxicity Anal!6is for BC Sanples 902 Table 3.12-1 Cuwe Numbersfor BC DrainageBasins. 92 Table 3.12-2 BarneysCanyon Project ImpoundmenfQ611[einmgst Volumes 9s Table 3.ljl-1 Disturbcd {396 grrrrrmar.y I Table 5.41 Topsoil Souces by Soil Tlpe 111

Table 5.4-2 Topsoil Applicationsby Site 111 Table 5.6-1 Sccd Mirturc for TopsoiledAreas 116

Table 5.62 Sccd Mixture for Arsas not to be Topsoiled L17 Table 5.6-3 Riparian Secd lvlirure 118

Table 7.0-1 ReClamatiOn Qgg[ grrrnrnsry 128

REVISED 9.29-89 TABLE OF CONIENTS o CONTINTJED LIST OF FIGI'RES

PAGE# Figrue 1.1-1 Location Map 3 Figurc 1.?-1 Propertv Mai 6 Figue 2.1-1 Getitosy lvlaDMap 10 Ftgurc 2.1-2 GeoloSc 6i5nCrix ie.tioo A-a' t4 Frgrue2"1-3 Gcolo$c Cross Section A-A" 15 Ficure 21.{ Geologic Crms Scction A-A',' 16 Fifirc 2.1-5 Geologic Cross Section B-B' t7 Figure 2"16 Geologic Cross Section C-C, 18 Figure 2.1-7 Geologic Cross Section C-C' 19 Figure 2.1-8 Cross Sections -Slmbols Expla"ation 2D Figurc 231 9roundwatefMdp 31 Figuc 25-1 Vegetation Co--unities. 42 Figue 32-1 Pd1glE*.h 9""!*ation for'Baraeys'Canyon'HghwaU Sectoi v F:rnre 3.2-2 DesipDesip-Be'lh Bench ConfigrrationConfiEurationof Mel-C6Mel, 55 Filure 32-3 East:WestCross Sedion Barneyspit 58 Figure 32a North-SouthCross Section Barievs pit 59 Figure 32-5 East-WestCross Section Mel-C.o-pit 60 Figrue 326 North-SouthCross Section Mel-Co pit 61 Figure331 Crushing/StackingFlow Sheet#6 62 Figure3.+1 Plot Plai . & Figue 3.42 Illustratioq of Pad -Oraaing. Frgure 65 3.4-3 *-"ogrg:ol Qfection Treach - nna 6 Filure 3.+a Process_PipingT1e-nct Qlsding 68 Figurc 3.11-5 F"d DetectionPiping 69 Figue 3.zt-6 Process& PondaieaTection Details 73 Fisure 3.4-7 ProCess& Pond Area Gradino Plan 74 Filure 35-l Carbon Adsorption - Flow ShEet #2A 76 Figure 35-2 Carbon Desorption - Flow Sheet #3 n Figure 35-3 Carbon & Gold Recovery Flow Sheet #4 79

o REVISED9-29-89 TABLE OF CONIENTS CONTINT,ED

PAGE#

LIST OF PI"ATES

Plate I ProjectSite Map . in pocket

Platc tr Pre-disrurbaaccSite Map . in pocket Plate Itr FacilitiesIayout & OperationalSurface Water [danegemGtrtPlan . in pocket Plate tV BaselineSoils . in pocket Plate V SurfaceWatcr DrainageArea Map . h pocket Plate VI RcclamationPlan Map . in poc&et

LIST OF APPENDICES

Appendix A-I Eat_oen Canyon and Mel-C.o Deposits Geologic Cross Sections Appendix A-tr Geolo$c Dri[ ltole Logs Appendix B lageline _Water QrralityData o Appeudix C-I Soil Profle Descriotions' Appendix C-tr Soil Qualitv Data Appendix C-Itr Acid/Base ?otential l-aboratorv Reoort Appcndix D-I Operational Imooundment Stale eanaciw Ctnes Appendix D-tr Dtsip Specificitions for Chainels and nbadsiae Ditches Appendix E Grading/Follodation Specifications Appcndix F I-i"er Specifications Appcndix G Scepage Calculations Appendix H-1 Reclamation C.ost Estimate Spreadsheet Appendix H-2 Recla-ation Cost Estinate 4tssumptions

..-, REVISED9.29.89 U -a

FORMMR-MO (Revised 7/87) -2-

NOTE: Detailed Information presented in the abtached Notice of fntent and approprlate sections are referenced herein. I. GENERALINFQBMATI0[ (Rule R6t3-OO5-'t04) I . Mine Name:

2. Mineral(s)to be Mined: Gol d

3. Nameof Applicantor company:KenJrego!,!, Explgrations (Ausrratia) r,ta. Corporation(X) partnership

4. PermanentAddress: p-r\- Roy 1I ^48 'l O Fa st Sorrth TcmFt p S-a'l t T,ake Ci tv. Iit ah AA1 A-7 5. CompanyRepresentative(or designatedoperator): Name: _Mr. Gerald D. Schurtz Titl e: manager EnvironmentEl ErJgllneerin! Address: Phone:

5. Locationof Operation: County(ies) salt Leke Counlv Township: z section: T Township: Ranle:Tw Section:-T6--- 3, 4, 5, 6 Townshto,E- nander-----3w- Section: 3s 1;-Z;-Tn 7. Ownersh!por the land surface: private (Fee), public Domain(BLM), National Forest (usFs), state orT[Iii6r other: ( privare )

Name:Kennecott ( all_ ) Address See Alrove Name:( see Section 1 .2. 1 ) Address Name: Address Name: Address

8. 0wner(s)of record of the mineralsto be nrined:

Name: See Section 1.2.2Address: Name: Address: Name: Address: Name: Address: 9. Have the aboveownersbeen notified in writing? yes _x No If no, why not?

10. Doesthe operatorhaveI ega'lri ght to enter and conductmining operationson the I and coveredby thi s notice? Yes x No FORMMR-MO (Revised 7 187) o -3- II. i,lAPS(Rute R6t3-005-t05) l. BaseMap A true and correct topographic.gltqmap. (or maps)with appropriate contourintervals must be submittecwiln'ir,it -if,r"i..le Notice which show al] of the itemson the foltowing ihecktist. I inch = (prer6riltv. shouldb; ipproximately 2'000 feet uics z.i rinute series-or-equivalent topographicmap-where .uailiuril-srloning'it. i n.surri ci ent detair to..tion of lands to be ;ilff:;:, io i.iri t'..iiur iiion-or-p.oioseosurrace

P'leasecheck off eachsection as it is show: drawnon the map(s). Doesthe mao

(a) Ploperty boundariesof surfaceownership of ail rands ''hich are to be affect.o-oy ite-tnining'Spii.tions: X (b) Perennialtii:1Tr,,spl]ngs andother roads' bodiesof water, buildings, randin! strips, er.iiiriir transmission lines, waterwitis,;ii"ino g.r piperines, borehol€s, existing weils or or othei eristing surfaceor subsurfacefacirit.ies within 500feet of tn. pioposed miningoperationsi x (c) Proposed route-of accessto the miningoperations from nearestpublicity maintained "highway ' r"nsJ iui[-r..r.\' 'sF JLq I s app.opriateqPPrvPr I crlt to show access) ; x (d) Knownareas which have been.previous]y exploration impactedby miningor activitiei the proposed permit "iinin mining area. x (e) Acreagesproposed to be disturbedor recraimedeach year (or other suitable time p.iioO- See Section 2. Surface FaciI i ti es Map 5.10 mapshall provided f,,t:t133?.facilities be at a scaleof not.tessthan [QgM MR-Mo (Revised 7 187) -4-

MapCheckl i st

checkoff eachsection as it lH:. is drawnon the map. Doesthe map

(a) Proposedsurface facirities,.incruding buildinss, but not rimitedto statiolyy rininirpi;;;;;;s'Jiuipment, roads, util ities, rinis, propoi.ddrainige-iontror andthe rocati:n^9r-toisbi?gyer structures, i .storageareas, overburden/waste dumps,tairings or-processedwasii-rii,iiiiies, for -r.iiii 'i.o disposarareas overburdei,sor i o-anJ-contai inj-iiqrio -iiii dl s;harge,treatment i wastewater nmeni iir.u i x (b) A borderclearly outlining the extent dlsturbed of the surface area proposedt6 be affected by mining, of acresproposbd lo oe jiri.t.o; andthe number (c) + The locailon of knowntest borings,pi ts, or core holes. x 3. Additional Maos lfll'ffil:t*[i!]0311,3I:l:nesmavbe required asappricabre in accordance

III. OPERATIONPLAN (Rule R6.t3_005-l05) l. Acreageto be disturbed: Mlnesite(operating, storaqe disposalareas, etc. ) Access/haul' roads /;;.;;;;;;;' :see-Sec$.-qn .L 13 Associated on_site proii;;i;g faci I i ties: Total:. E,fl--- 2. Describemethods and procedures processi to be employedfor mining,on-si ng and concurrentreclamation. te

3. Depthto grounduater(if known) 120+ feet ';1. FORMMR-MO (Revised 7 187) -5-

4. Thicknessof soil material to be stockpiI ed. L2 Areafrom i nches whichsoil material can be sa1vaged 475 Volumeof acres soil to be stockpiled 670.09o cu. yds. (cross referencewith itim IV_I7) 5. Thicknessof overburden @tions ft. 2.I and 3.1 6. Thicknessof mineral deposit. See Section 3.i ft. 7. Volumeof refuse, tai I i ngs, and processing wastestockpi iei. . lr_lSO, OOO_ cu. yds. (spent leach material) 8. Acreageof tailings pondsand water storageponds to be constructed. See Section 3._12_acres 9' Describehow.topsoil or subsoilmaterial will be removed,stockpiled andprotected. See Section 3.9

10. Describe how.overburdenmaterial will be removedand stockpired.

I I . Describe howtailings, wasterock, rejectedmaterials, etc. will be di sposedof. See Section 3.10

12. Potentially toxic materialsmust be analyzedfor toxicity. Describe the nature of any toxic materialswhtcn irilt be used,encountered, or generatedonsi te (SeeRule REl3-O0t-l23). See Section 3. 1

ecify conducted

NOTE:The Division maystipulate acditional analyses. t3. For eachtailinos pond,sediment pond, or other majordrainage control structuies, attach Oesign cross-sections. drawingsand typical FORMMR-MO (Revised 7/87) -6-

14. Describeany proposedeffluent dischargepoints (NP0ES)and show their location-onthe mapprovided und6r itule R6l8-oo5-105.2.Give the proposed-dischargerate and expectedwater guality. niiicrr chemicalanalyses of suchdischarge if avaif.bld-rvJu:".r,io. is

15. - Vegetation Theoperator is required to return the land to a useful conditionand reestablish at least 70 percentor ilre pierinlng- vegetationground cover (as measuredoh site- before-- miningoi'on similar adjacentareas if alreadymined): ground The coverpercentage figure is determinedby samplingand averagingthe vegetationtype(i> on the areasto bi minbo

Sampli ng methodused See Sectio-n 2 . 5 Numberof plots or transects See Seeri on -.5 GroundCover Percent

Vegetati.on(perenni al grass, Toro and shrub cover) See Seetien 2.5 Lltter

Rock/rockfragments Bare ground ll It l00z RevegetationRequirement _ 70 percent or abovevegetation figure) See Section. 2.5 t4) predominant perenniarspecies of vesetationsrowins "tltlnlnlr:::rSee Section 2.5 FORMMR-MO (Revised 7/87) -7 -

(b) ?hotograohs^:.T!eoperator may submit -vlgetationphotographs (prints) of the si te sufficient to showeli iiing conditions. Thesephotosraphs shourd snow th; condition ;;r;;;r ipp..rinr.'ino of the areato be affectid ino may'ueuii.iiied for comparisonupon recramation of the iii.. Ffioi;g;;il;-snouro ' clearly marked be as to the locatior, oiiintation and the date that the pictureswere taken. 16' - Soils Theplan sha'll includean order 3 Soil (or and map' Survey similar) This informationis neededto Jeierminewhich -Jati'maysoils suitable for stockpi are I ing for-revegetation. This soir be available from the rocai soir conieiv;ii; public service office, oF if on lands, from the randmanagement agency. Themap of suchscalg;flrai needsto be torr-iyp.t can be acciraiery determinedon the ground(see attachmentI)-.' (a) Each soil type to be disturbedneeds to be field ana'lyzed the fol lowing: for

0epthof soil material nche Volume (for stockpi Se e Se^ctj-o'J*.4i. s I i ng) r rr r CU. ydS. Texture(field determination) pH (field determination) 1t (cross It t! It referencewith item Trr tr \ (b) hlherethere^are problem soil areas(as examination) determinedfrom the field laboratoryanalyiis-rav-ue-i...rr.ry for someor all of the followingpirir.t..r, Electrical Conductivity _ See Section ? -4 SodiumAdsorption Rati6 Saturation1 9rg*i c-matterpercentage AvailableP AvailableN-NOr pH (laboratorvi (laboiatory) Texture ll

NoTE:Soil samplesto be sentto the laboratory be aboutone pint-i! sizi,-proierrv.i.o.ieo,"ino for analysisneed to soil horizons in prasticbags. Eachof the on somesit6s-mi! need to be sampred. 17. Providea narrative description geol of the georogyof the areaand/or a ogic cross section. See Section 2.L EORMMR-MO (Revised 7 187) -8-

IV. IMPACTASSESSMENT (RuIe R6.I3-005.108)

Pleaseprovide a generalnarrative description identifying potentia'l surface and/or subsurfaceimpacts. t^lhereappl icable, ittii description shou'ldinc'lude surface and gioundwat.r sysi.rr, species or of high interest their critical habitats, gxisting toil-i.rorr..s for reclamation, slope stability, erosioncontrot, air-luarity, and pubric safety. hearthand

See Section 4.0

V. RECLAMATIONPLAN (Rule R6.t3_005_l09) l. Li st current land use(s)other than mining: See Seci.ion I .3

2, Li st future post-reclamation land_use(s)proposed: See Secri on 5 -.1

3' Describe phase each of reclamation- of the minesitein detail under the fol lowingcategories: (a) Disposa'l of Trash ::?:tL:.,!?I_9!]lolns, foundations,trash andother waste materiats wiI I be di sposedof.

(b) _ 9ackfiI I i nq andGradj nq uescrr0eequrpment and methods to be employed,amount be moved of materialsto and finar dispositionoi anv ilocipiieo---r'--' materiars. See Section 5.3

!.) SoiI Materi rn order to ree: has1oep9nJi.;-";-;;mff|lli.3,ni3ii:oi:,:I;'"ll,ll,:i",|::i1y to be redistribuied-on the ireas to be reseeded.if the stockpiledsoil isn't sufficient ror tnii, ,oii'borrow needto be located. areaswill

Howmuch soil ma.terialis plannedto be put reseeded? on the area to be i nches Section 6.?) EQSUun-uo (Revised 7 187) -9-

$lherewill this material comefrom? ^ Spp Spnl'inns 4 anrl 5-4

Howwi'll i t be transportedand spread?

_(d) SeedBed p1gg1g!Q! Descrite-Ed-T6-e seedbedwi l.t be preparedand equipment US€d. sao eaa+ .i to be

( TheDivision-JEco6teiE ripping o (e) SeedMixture - List the speciesto be seeded:

SeedingRate Soecies Name ('lbs PureLive Seed/Acre)

Spe spr.tion q-5

ing introducedadaptabt" lp..iii-oi provl grass, forb, andbrowse seed and will de a specifi c speciesI i st if requested) Il) SqedinqMethod uescribemethod o-planting the Sged.- --- ..Soa - .,.-,(aal ,'inn R ?

(rhe Division-@ seedwi th a rangeland drill. or if broadcasthro^rrtr:.+-i.ii-i;-in.'irli.li.i"iirl"iosebded,.^l,rl,.,-'L- or farm inchinto:_?I theiI nirio" or rakethe seedI 14 to v2 soir. seed) (g) tqrti I ization Des c rTE-e-f:-iITilEt i on met hod an d rdt€. See Section 5.g

vI. VARIANCE(Rule R6l3-005_l I I ):

4ny p]anneddeviations from rule R6l3_005_007(Operating RuleR6l3-005-010 (Recramation'iracilces) Practices) mustbe identified below. ( see tfifif.iti'uu.;o) Title/Cateqorv M-10(3)..rt7t0rat, M-10{r M-10(4) Durnp-edEe Roundino u-1.0(5) Flighrlat 1s greater M-10(12) than Z5 degrees % Vegetative Cover (selectei-areas) M-10(14) Topsoil Sa1\'age ani Replacenent ( Sel-ected g:,.1!.:!"1-Ci;,j Rreii#,en as ) 5:i,:::1, X:'li:.:.::q::::: -ino -ii yt'il ;';l;i;,';: t descrr b i nsand thg need far fha varirrtri inci,raaa rar r: :'i#iTFrix; toll.^:.:!, be utilized.f?:^!h. ;;r;;i rg'iit.i;i; #illlii.;rr;i;l;il1

VII. SURETY(Rule R6l3_005_llZ) A Reclamation suretymust be providedto the-.rount, Division prior of this appli cation-- to flnal approval ln ciic[iiting-thit-- - the Division wiI I the following majorsteps,- consider

l) Clean-up-andremoval of 2> Backfi structures. I ling,.graqin9 ind coniorring. 3) Soil materiar-redisIriuutionandstabi'rization. 1l Revegetatiol(preparation, seeding, mulching) 11 Safetyano renlini. 6) Monitoring. To assist the Division in determininga reasonabre attach a reclamation surety amount,please cost eiiimite r[ich addieiies eacrr6r tne abovesteps. VIII. SIGNATUREREQUIREMENT I hereby certify that the foregoing is true and correct. Signatureof 0perator: Name(typed or print): Title of Operator: rr.n; Date: PLEASTNOTE:

Section40-8-13(2) of the MinedLan.d Reclamation Act providesfor maintenance of confidenti ar r ty-con;;r;;;;-;ertai portions report' n of thi s Pleasecheck to see that any iniormationdesired confidentlal is to be held so labeled,:3;l?,:;,iliand incluled'on'r.p.r.te sheetsor maps. Slirol,lilT::gfi ioiiiioit;i.; ;;_n;;;;;.oitn;.;;oo,i t confidentiar InformationEncrosed: (x) yes 0899R ( ) No LO INIRODUCIION

IGnnecott Corporation (IGnnecott), a Delaware C.orporation intends to operate an operr pit gold rnins lad beap leach prooess facility known as the Barnep Canyon mine. The project q,ill mins and

process up to approximately 4314,000 tons of ore pcr ),ear at an average rate of 2,000 tons per day

CntD) over a Period of cight years. The principal project components wiu be the Barneys and Mel-

Co open pit mines and related mine waste dnmps and a processing plant. The processing plant will

oonsist of screening conveying, ore cnrshing and agglonerating facilitieg a number of heap leacb

pads, a leachateprocessing plant and refnery and offices and shops.

It is Kennecott's intention to commence constructioD in the third quarter of 1988 leadiag to

gold production in the third quarter of19g9.

Ll location

The project area is located on the east flank of the Oquirrh Mountains in Salt Lake County, Uta\ approximately 3 miles northwest of Coppertoq Utah. thc project location is shorm on the -ap, project location Figure 1.1-r. facitities wiu be locatcd as follows:

MainAccessRoad To*aship 2 South,Range 2 West,Sections 31 and32

Tomship 3 South,Range 2 West,Sections 3, a, 5, and6

PlantSite and Township2 South,Range 2 Wes! Section31

Barnep Mine Pit aadDump Township2 south,Range 3 west, section 36

Township3 Sout\ f,ange3 West,Section 1

Mel-co Mine Pit andDump Tonmship3 sout\ Range3 west, sections

and Access Road 1r13,and 11.

Project facilities are showu on the ptoject Facilities Map, plate I (in pocket).

1 REVTSED9-29-89 L2 LandOcrncrship

l"J Surhe Omcotttp. All land surfacewithin the project disturbedarca is ocned in fee by

KconccottCorporation The r -"d OnmershipMap, Figure 12-1" showsthe surfaceland oumenhipin

the project area. A third party, CalvinJ. Sprattingand William Max Spratlingoriginaly oumedthe

roadway and right of way that provided acoessto a televisionbroadcast tower owned by Station

KCP& located in the northeastguartcr of the northeastguarter of Section34, Township2 Sout\

Range3 West. Kcanecott,through a land exchangeatrargemert, has provided an alternateacoess road to the TV tourcrsite.

IGnnecott oumsall land that will bc disturbedand all land adjacentto the proposeddistubed

area The l-aad o*aership Map, Figure 1?-! shounall surfaceland owucrshipwithin an lii-plus

squaremile area around the prqiect site. The namesand addressesof surfaceland o*uers whose

propertiesare shownon the land maparc listsd in Table1j-1.

o 2 REVISED 9-29-89 6Al-tNts,Y 5 UAN YUN F'F{tJ.rtr\, I

s$ Jo

EARNEYSCANYON GOLD OEPOSIT KENNECOTTLAND C-OPPERTON CONCENTRATOR 1l uel-co \r DEPOSIT

BIN6\GHAM PIT t I

UILES FtGtfRE1.1-1' LOCATIONMAP BP MINERALS AMERICA KENXECOTT BARI{EYS CANYOI{ PROJECT S.|t l*. County. Utrh Fioure I Table 1.2-1 Surface Ownership

Name Address Comments

CdvinJ. Spratling StarRoute, Box 400 Road Corridor

Pendleto&Oregon 87801

V/illiam Max Spratli4g Deetb Nevada89&23 Road Corridor

CoppertonImprovement 208South 400 East WaterWell District Copperton,Ut 84006 Sites Howard H. Halmes,Jr., 28308.St. Maryway Property north et.al. SaltIake City, UT ofBarncys

84108 Canyon mins snd dunps Evelyo P. Boyce 1200E. CharltonAve. Property north

SaltLate City,UT ofBarneys

84106 Canyon mine and d*pr,

sharas oumership with M.N.

Sweet and L.P. Connell

122 suMce owocnstb- subsurface land or mineral rights onnership within and immediately adjacent to tbe two ore bodies is also shown on thc Iand Ow.nership Map, Figure 12-1. The subsurface owners otber than Kennecott as well as their nanes and addresses are listed iD Table l'2'2' Kennecott mingpt leases rights to the BarneysCanyon deposit from the State of Utah. Table 1.2-1Surface Owaership (Continued)

Name Address Comments

Marjorie N. Sweet 3O77S.5000Wsst Shares

WestValley, UT ownership with

u12n E.P. Boyce and L.P. Connell Lois P. Connell 1200East Charlton Ave. Shares

SaltIake City, UT ownership with

84106 E.P. Boycc and

M.N. Sweet

Table t2-2 Subsurface/MineralsOumership

Nrme Address Comments

Stateof Utah 3 Triad Center,#350 StateLease for Division of StateIrnds SaltLake City,IJT MetalliferousMinerals; and Forestry 84180 ApplicationN o. 73XJN29?A

Scction%.T.2S., R.3 W.

Banick Resources P.O.Box838 RKClaims (USA), llic. (50Vo) Tooele,UT84074 (subsurfaceonly, Kennecott

olvls surface)

Royal Minerals,Inc. 150South 600 East RK Clains (s0 vo) Suite5D (subsurfaceonly, Kennecott

SaltIake City, UT ownssurface) 8/074 KENNECOTTSURFACE 2e EDITHDANIELS EVALINEHARMON GERALDINEKNOTT HOWARDH. HAYNES

TT UNPATENTEDCLAIM KENNECOTTSURFA STATEMINERAL VIN 8 WILLIAM EASE273e0 SPRATLING (Minerol) 'MAXill4Ull4AREA / AFFECTED8Y OPFRATPNS --. 35 {u--\- 31 t\ (--5 :.-rl KENNECOTTSURFACE 8 MINERAL EI F1'Tl U \l u- ( FSPRATLTNGS33-FT. wrDE coRRlDoR --___ o e. /--l (Purchose in progress- m \7 by Kennecott f surloce ond minerol tn F. F

COPPER,TON IMPROVEMENT DISTRICT scALEr.2000' 2000 0 2000 FEET 2 R.KCLAIMS ROYALMINERALS KENNECOTTSURFACE (Minerol) 8 MINERAL

Figure 1.2-1 BP MINERALS AMERICA KENI{ECOTT BARNEYS CANYON PROJECT KENNECOTT SURFACE FEDERAL PROPERTYMAP o

t/28/88 13 LaadUse

The lands in the project site are patent lands uader the control of Kcnnecott. The principal

land ue at the project site-proper has been for wildlife habitat. The areas that will bc developed

are ctrreutly undeveloped and wildlife usage is relatively high, slthsngh reccut exploration activity

has undoubtedly caused at least local changes in the level of wildlife usage. The wildlife in the

area is discussed in Section 2.6. The lands are presently closed to public aocessand, consequently,

little hunting occurs bere. Thqse lands also are leased for livestock ganng. An access road

through the property allows accessto the KCPX TV tower on the ridge adjacent to Harkers Canyon

(Plate I). I-and adjacent to the curent and future project aocess road is under cultivation for wheat.

L4 F isfingFacilities

The locations of existing roads are shown on the Project Facilities Map, plate I and the pre- Disttubance Site Map (Plate II). There are no builrlings, lakes or reservoirs within the project area

or within 500 feet of it. The locations of streams, springp, and wells are discussed in Sections 2.2 and 2.3. Powerline locations are shown on Plate II, the Pre-Distrubance Site Map. There are no other &'ansmissionlines in the project area. There are oo existing mine aditg entries or open pits in the project area.

15 MincralEploration

Kennecott commenced minslxt erploration on the project in 1981,with ddling begiming in 19g5. A total of 215 ex.ploration drill holes ranging in depth from 35 to g76 feet were &illed using rorar! reverse circulation and diamond core drilling machines. The Pre-Disturbancc Site Map, plate II, shows the locations of e':rploration drill holes outsids ths n'ing developmcnt areas. This map is

Coofidential. The locations of exploration drill bole.s haw also been provided the Division in

previous submittals of oqploration Notices of Intent. Areas of more intensive dd[ing at the sites of

the proposed open pits are outlined on that map. All drill holes have been or wilt be plugged

according to regulationg unless they have been completed as piezometers as discussertin Section 2.3.

In addition to drilling, a number of trenches were dug with a backhoe, and accessroads for &iling

equipment were built with bulldozers. Other exploration work consisted of geologic mapping and

sanpling.

15 UditiesandAess

The entire plant site, warehousg and truck shop will be supptied with electricity from

Kennecoft's Utah Copper Division. The Facilities Layout and Operational Surface Water

MenagementPlan map, Plate III, showsthe locationof the proposedpowerline. Propanefor heating

wiu be supplied to the site via truck. Telephoneservice will be supplied by Mountain Bell.

Telephoneservice will be broughtto the sitevia eitherthe powerlineor aocessroad corridor.

Access to the project area will be via an inproved aooessroad from Highway €, s shown on

Plate I. The principal access to the Mel-Co mine pit and crusher wil be via a graveled road planned to be constructed from Barneyscanyon along the route shorm on plate Itr.

R"EVTSED9-29,89 2(} SitcDcsaiptio

21 Gcologr

e r r Goologicscdng

The BarneysCaayon projc€t arca is located at the cast edgp of the Palcozoiccore of the

Oquirrh Mormtains. The surficial gcolog of the prqiect area is sho*n oa Figrue 21-1. The

Oquirrh Mountainsare comlrcsedprincipatty of Pennsytranianand Psrnian miogeodinalsedimentary 'Ihe roels with an aggregatethickness of morc than 35,000feet. principal rock typcs are limestoncs and sandstonesthat wpredepositcd cydically.

The Barnep Caayonand Mcl-Co.ioe prt sitesare underlainby thc PermianKirkman-Diamond

Creck and Park City Fornations. Theseunits are moderatelyto stecplydipping in directionsrargiqg fron northwestat Mel-Co to north and aortheastat BaraeysCanyon Stru*urdly, the Kirknan-

Dianond Peak Formation is patt of the footwall platc of thc Oquinh thrust fault (Figrrc ZL-L).

The Park City Formation oocurs at thc cast side of the BarneysCanyon deposit and has been preservedin a down-faultcdblock of the uppcr plate of the Oquirrh thrust fault (Swensen,19/5), as shoumon the gcologic map (Figpre Z1-1). In addition to thc thrusting;the Paleozoicrocks have beenfaulted by a numberof northeastand north-trending higb-angle normal hults @grre Lt-L).

The projcct procassfacilities will be sited on Quaternaryallwial sedimentsto the east of tbe bedrock outcrop tine. The PleistoccneHar&ers Formation alluvium is the dominaat alluvial tlpe; howevcr, recent stream allwium occupies stream c,hannels. lbese alluvial t5pes ate not difrersntiated on the geologic "'ap, Figue 21-1. Tertiary volcanic rocks, compriscd chiefly of latitic floursrbrccciaq and agglomeratescrop out to the north andsouth of the processfacilities. --REDACTED--

ORIGINAL IJOeATED IN Doclt COIIFIDENTIAL FILE

2.1-1 G:n BP iilNERAIS Ar'tERtCA \E n KEI|ilEGOTT BARilEYS GAt|YOil PROJECT \-/ s.tt L*. coudn ut.n

GEOLOGYMAP

YTEE COT T'LTAIITS OFOUP -ffi

)!S|GN€OEY: IDIATIED rYr lo^If: R.J.8..1 cL.P I t/26/88 The Quaternary alluvium in the processarea unconformably overlies the buried volcanic rocks.

t't ' GGolAg'/of ttfincralOePcits

The Barnep and Mel-C-oore bodieswill be derclopedas fiilo separateopen pits. The Barnep ore body is hostedby the lower PermianPart City and Kirkman-DianondCreek Formations. The host roc& litholog consists of silty dolomite with chert interbcds and calcareoussandstone, respectively' in the two stratigraphicunits. The gold-nin e:rlliz?Azole in the Barnep deposit has bccn completely oridized aad cssentially ao sulfide minerals are prescnl The deposit is characterizcd mineralogicallyb the presenceof clay mineratswhich are hydrothermalalteratioa products" The overburdenat the Barneyspit will be comprisedof dolomite with chett interbeds and sandstone' strata dip gently to the north and the naximum ore depth is approximately600 fect in the northern part of the ore body. structurally, the dcposit has been faulted by both a low- angle tbrust fault and a aumbcr of high-anglenorual faults. The geologr of the Barneysdeposit is depicted in cross sectionon Figure A-I-1 which can be found in Appendix A-I. The conteatsof AppendixA-I is confidentialand is thereforebound separatelyfrom the nainbodyof this document.

The Mel'co ore body, locatcd approximately15 miles southwestof the Barneysdeposil is hostedalnost cathely by calcareoussandstoncs of the lower pennsytranianKirha&Diamond &eek Formatiou' Unlike the Barncp dcposit,the Mel-co ore body hrs not bccn completelyoxidized and sulfide ore, characterizcd by the prcs€noeof pyrite and marcasitgoocurs in the deeperparts of the ore body' overburden at Mel-co will consistof sandstoneand quartzite. The strata hostiag the ore body are vertically or near rartically dipping the geolog of the Mel-co deposit is shoumin crosssection oa Fig're A I-4 crhi.h canarso bs foundin AppendixA-I.

11 e.r q Subsurh€ ereoQg of the pr,oessFacilities Site

The p,rocessfacilitie.s site is outtinedon the geolqgc -ap (Figure LL-L). Dri[ing has been done

in the processsite area both for the purposeof condeunation(determination that economicmineral depositsarc not presenQand foundationte.stin& The locationsof thesedrill holcs and boriags are sho*n on Plate tr and geologiclogs are prcsentedin Appeodix A-tr. Condemnationdriling by

KsDnccott in tbe procossplant area has consistedof threc rotary-rer€rsecirculatioa &ill holes.

Geologiclogs of two holeg BC-!E and BC-150are arailable. Foundationinvestigation studics by

Sergenl Hauskins,and Beckwith (SIS) led to the drilling of a numbcr of test boringsand test pits.

Thc locatiou of the dcepcr augcr borings are also showa on Plate tr. Additioaal geologic data oomesfrom logs of water supply wclls in tbe area The locationsof water suppb wclls uscd in qraluating the site geologf are shown on Plate tr, the Pre-Distubancc Site Map. Sourccs of grounduaterinformation for the areaare discussedin section23.

No faule or other geologicstructures have becn identified by the linited amountof drilling that has been done in the processsite area Mappedgeologic structures in the Permian-agedbedrock to the wEst of the site @gure 2.1-1) are not Lnovm to have been active since the mid-Tertiary or before.

A number of geologic cross sectionstbrough the proposed processfacility area have been prcpared rsi'g availablegcologic log!. Tte lines of section are shocmon Plates I and tr. The sectionsare show! on Figures?^t-2 thtols 2"L-7. The scales,both vertical and horizonta! of the sectionsare rariable dependingon the leogth of the sectionand topographicretief along the line of section Hence in rnalringdirect comparisousbetween sections, the effectsof scalechaDges must be taken into account. the c':planationfor thc spbols used in the crosssections is shoqmon Figure z1-8.

12 Cross sectionsA-A' (Egtrre Ll-Z) atrd A-A' (Figrre 21-3) are northwest Estrding scctions drawn thtongh the processsite condemaationholes and then Eore thnn a mile southeastof the site through wells K-405 and W-32, respectively. The lines of sectionfor each of thcse cross sections are shournon Plate I. Well K-405 is a lGnnecoff water productionwell &illed adjaccntto the aew

Co,ppcrtonConccntrator. Well W-32 is one of the two Coppertoncomnunity watcr supply wells.

Thesesoctiors sbow that the allwial deposis near the project site were depositedon a pedinent of uderlying volcanic rocls and that ths dominant bedrock in tbe area is Tertiary volcanic flour.

Thesesections also depict the aquifcr t!'pes in the project area In dril holes BC-148ald BC-150, the occurrenceof clap identified in the rotary drill ortting are interpreted to represent air-fall ttttr beds. In each drill hole, the groundwatcrsurface is closelyassociated with a tuff-derived clay layer. As discussedin Section23, hydrogeologicdata suggestthat tuff beds in the volcanic flow scquencescrvg at leastlocally, as confiningbeds or aquitards.

The geologiclog of wcll W-32 desaibes volcanicroc\ prosumablyTertiary io age, ovcrlying clay-dominantsediments described 3s hke bed sedimentsand presumablyof Pleistoceneage. The nost reasonablee':rplanation of this incongnrityse€Drs to be that the volcanicswere depositedon of the apparentLakc bed sedimentsby a debris flow or other massmowmcnt. The dcscriptionin the log of "rockcin mud"within oocrulenccintcrval of the rctcanicrocts supportsthis contention"

Goss scction A-A"' @gure 2.14) is a northwest-trendiugsection that cfcnds acrossthe cntire procqssarea. Agai!, the relationshipof the ground water surfaceto the volcanictufr layersin the volcanic0oun is apparent. Becatsethe coademnationholes were drilled by a rotary dri[ detailed logs of the uncossolidatedallwium were not prcpared- The logr of the augerholes arg as a result of the drilling metho4 moredetailed. Attempts to correlateatluvial lithologies between foundation

a --REDACTED--

ORIGIIIAL LOCATED III DOGU COIIFIDENTIAL FILE

te 2.1-2 lfrl BP MTNERALSAMERTCA xElr*Ecorr PRoJE* Sz 3ii$:L?ilrrolr

CROSSSECTION A.A'

COXSULTATTS OROUP ott'onto t*-Tiii-3r "o.,'B' lot^tt*' /88 --REDACTED--

ORIGINAL LOCATED IN DOGU CONFIDEI{TIAI. FII.E

Ffgure2.1-3 r-\ BP MTNERALS AUERICA \^lty KElrxEcoTT BARLEYS CAr|yOlt pRoJEcT V S.tt !rL. Ccnty. Utrh

CROSSSECTTON A'A''

coraaulTAl{Ts oBOUP

)ESIGNED8Y, IDRAFI€08Y' lOert, R.J.B.I c.r_.p.I tr3rl88 --REDACTED--

ORIGfNAIJ LOCATED IN DOGU CODIFIDEIITfAL FILE

Figure 2.14 /-;\ BP MTNERALS AMERTCA \Drl KEXNECOTT BARNEYS CANYON PROJECT V Sall Lake Conrv, Utrh cRosssEcTloN A-A"'

COXSULTAXTS GROUP

DESIGNED3Y: IOTAFIEDrr" IOeiri- R.J.B.l c.r_.p.1 r/3o/88 --REDACTED--

ORIGINAL LOCATED IN DOGU CONFIDENTIAL FILE

BP IUIINERALSAMERICA KENTIECOTI BARNEVS CAXYO'I PROJECT Srlt L*. Cqlnly, Ut.h

CROSSSECTTON B-B' --REDACTED--

ORIGINAL LOCATED III DOGM COIIFIDENITIAL FILE

BP MINERALS AMERICA KEXXECOTT BAR}IEYS CAIIYO}I PROJECT S.tt Lrk. Co|J||ly, Utlh cRosssEciloN c-c'

COTAULTAXTA OROUP

DIAFTED BY: C.L.P --REDACTED--

ORIGINAT LOCATED Il{ DOGU CONFIDENIIAL FILE

2.1- r-\ BP MINERALS AMERICA \Df/ KExlrEcorr BARNEYScAllvox PRoJEcr \-/ Sall Lal" Counly, Utah cRosssEcrtoN c'-c"

9jCl corsulTAxrs eRoup --ffi DESIGNED8Y. IDR^fIEO8Y. IDATE' R.J.B.I C.L p.I \/3O/BB --REDACTED--

ORIGINAL LOCATED IN DOGM COIIFIDENTIAL, FILE

Ffgure 2.1-8 I-I BP MINERALS AIIERICA \Dr/ KEr0rEcorr aARrEys caltyor pRoJEcT \-/ sdl l-.tc cqfrtv. ut.h cEorocrccRoss sEcnoN SYMBOLSEXPLANATION

gY, D€5|GN€D IDRAFTED8Y, lD;-E R.J.B.I C.LP | 2/8/88 borings were made, as the section shouas; however, the drill hole density and variability in

lithologies ma&es suc.h interpretation difficult. It is rignificsjt that of the seven borinp depicted

on Section A-Ar" (Figure LL4), fir'e have clay as their uppermost lithologr. Each of these firre

borings are located on hilltops 6r hillsidss. This relationship is displayed in most bori1gs sinilarly

located in the processsite area

Goss section B-B' (Figure Zl-t is a northeast-trendingsection through the wpstern-most proposedleach pad site.

Cross sectiousC'C (Figure 216) and C-C' (Figure 2.1-7) are, raspectively,aorthurcst and northeast-trendingsections in the area of the eastern-mostleach pad sites. AgaiD, as was the co.e in scction A-A'" (Figure 2.14),lithologic correlationbctween drill holcs is difficrttt The geologic oacurreDaeof very minor pcrched grouldwater is depicted in these cross sections. This pere,hed grormdwateris discusscdfrirther in Section23.

ZLa Scisnicity

The site is located near the eastgrn boundary of thc seisnically actirr Basin and Range Province. Regionalscisnicity mapshave bcen compiledfor Utah basedon historic data from 1g50to

1980 (SHB' 1988). Small to modcratesized carthquakesare numerousin the State and are largcly associatedwith the wasatch fault zonc and Basi', and Rangefaults such as those on the west side of the Oquinh Range. The closestrecorded earthquake was a 1962rnagnituds 52 errcntin Magna approximately9 milesnorth of the site.

TVo mappedfault sptems with Holoceneactivity are aear the site. They are the WasatchFault about 16 miles to the eas! and the frontal fault of the oquinh Range about 5 miles west of the

2L site. Tte seisndcity in &e Mrgna area suggeststhe possibility of active faulting; however,

interpretation of low-sun anglc aerial pbotograpbsand aerial infrared photographyindicate that

there is no surfacerupture in the Magna area (SHB, 1988). This has been interpretedas evidence

that there have been ao events larger than rnagnituds6.0 near the site area during the late

Quaternary.

The site doeslie within the UBC-3 seisnic zoac and nerinurn credible earthquakesfor ranious faule in the area have been calctrlated The estimatedhorizontal bedroc&acceleration resulting from a Daxinun credible carthquatc of Magnitude 7.6 fot the WasatchFault was ued for the projcct site. An effectivepcat horizontalground accslcratioaof 0.189(corresponding to a 500 year resurreuce inter%l) was used for the carthquakc desigg evaluation The earthquake de"ign eraluationindicated that permanentdeformations rmder this designaccelcration value would be lcss than sh inches,which is cousidcredwell within sxfe lirnits. It was also determinedthat major earthquakesgenerating accele'rations of 02g to 03g would probably create slides of sufficient 'nars is dqmagethe pad liner. lte rectrrcnce interyal of theseevents is estimatedat 600 to 1200years; thug a *nnll fi5ft of earthquake-inducedliner damageis inherentwith &e use of heap placemeutby dumpiag(SHB,1988)

22 Surfae Watcr Hydrotqgr

The mean annul precipitation in the Barncp Caryou project area is 16 inches @amcs and

Moore, 1988). Approxinatd one third of the prccipitationfails 6s snow from Decemberthroryh

March and the remainderfalls as rai4 predominatelyin the Spring. Summerprecipitation is largely characterizedby thunderstorosinfluenccd by the orographiceffects of the Oquinh Mountains(SCS, 194). Auual snowfallalong the Oquirrh Mountainfoothills is approximately81 inches@anes and Moore,1988).

2 Surface water drain4ge around the Barneys Canyon and Mel-Co Mine site project areas is

governed by the north-south trending Oquirrh Mountains. these mountains rise to an elevation of

9,fi)0+ feet AlvlSL (aborn mean sea level) or approximately 5,000 feet above the 4300 fcet AIT{SL

SdtkteValley.

The Barnep CanyonProject site lie.s alo4g the southeasteraflanlr sf the Oquinh Mountains.

Baraep &eeb which floun from Barnep Canyoq is intcroittent at is headwatersand perennial

over a two mile reach adjaceatto the project area. Directiol of flow is from west to east where

runoff contributesto the Jordan Rivcr located roughly fine milcs away. Continuors streamgadng has 16vg1been performedon Baraep &eek Other cnall, intermittent and ephemeraldrainages in

the project arca are localizedby the topographyof the BarneysCanyou project site which consists

of low hils sloping easterlyat a gradient of about l0%. Elevatiors range from 5200 feet to 2000

feet alo4g these foothills. Many s-all valle],switb watershedareas less than one squaremile nrn

tbrough the site. Becarse of their smal drainageareag runoff from these cphemeralchannels is

srnnll

Bancroft Spring ernanatesin the srnellrnalley south of &e proposedleach pad area @late2) and provides a souroeof flow in that drainagefor a part of the year. Only during very dry periods doesBancroft Spring cease to f,ow.

The Mel-C-opit site is located on the draiugc divide (eL ?6ffi top) south of BarncysCanyon and at the head of a snall tributary to Dry Fork Dry Fork is ephemeraland the nmoff from the watersheddrains iils f,inghern Creek approximatelytwo miles south (Figrne 1.1-1). The Mel-Co umstedump will lie on the southeasteraedge of this ridge approximatety25fl) fect southeastof the pit area Waterfrqp fhis s1.e6{3eins into the Dry Fork basin.

B Surfacc watcr qurlily has bccn a\aly?td from serrcralof tbc springsin the arca. Barnep Spnng (s'318) (Figurc 231)) is locatcd approximately12 miles southcasrof ths projca arca Warcr quslity aral)4sisindicatc high lercls of total .ti"solrrd solids (TDS) (1 g90 _ 2& og/l), cblorides (304 - g2 n9D, aad sulfatcs(187 - %3 rrgt[. Watcr pH rangedfrom 23 to 83. Barncp Spring is bcliercd to originate from ths Tcrtiary Volcanics. CrystatSpnng (5-316) and Maple Spnng (S- 319), locatcd 2 and 45 milcs rcspcctiraly,aortbwest of tbc projca sitc, were also anatpcd for watcr quality. Thc data indicate both spriagscmit good quality watcr wirhin thc staadigdsset by thc Utah Dcpartmentof Heatth" Thescspring appearto eEanarefron th; p-ennsflvaaian-age,whirc Pinc Formation. Bancroft Sprrngcnanates in thc small rallcy southof tbe proposedlcach pad arca tr) @atc and providesa sourcc of flow in that draiuagcfor part of the year. Bancroft Spring spPears to rcsult from iufiltrating subsrufacc0ow in altuvial fi[ bcing intcrccpted by a buried occlurcnce of quartz latite which oocursat the locatioa of thc spring. Flow rates fre6 rhis spring havc becn cstimatcdat 30 ealloEspcr minute, tbougb tbc consistcng of rhit flow ratc i5 rrnknsq4l. Aquifer rcc;harge frs6 rhiq spring is probably low due to the low permcabitityof the volcanic aquifer' This spring bccn sampledfor water quality paranetersand falls wirhin Utah Dcpartmcntof Hcaltb standards. Thc Baraeys C,anyoutuaael water sourcc, located approximatclytwo miles southcastof the project area (Plate n), is of drinting water quatity srld is orreutly ued as culiaary water at thc Gcologl luilding, Prccipitation Plant, Lcad Mine townsite and tbc uanium cnraction plant. A suEnary of this water quality anal)EisrDay bc fouad in AppendixB @arncsand Moore,1988).

Several suface water sites havein the past bcen analped for water qualiry downgradientof the Mcl-co mine site. Historic concentrationlevers from surfacc*1s sampresitcs s-29,s-59, s-59a, K{l' K'78, K-?9, and K-1o2 indicatc a wide iangcr TDs (t 300 - 46J00 mg/r), surfatc (g,600- r?,800mg/l), - copper (6 tLz mgll), chtoride (r,g00 - aGO Eyl) aad very low pH rzlucs acar 3.0. ro REVTSED7-20-8f. A cooplete fisting of ttresevalucs may be found in Appcndix B @amesand Moore, 1988). Water

quatity data for Dry Fork Crcck East (S-59) indicatc low to moderatelcvets of TI)S, sulfate and

elloride but there are uaexplainedfluctuations in tbc valueslistcd (Appcndix B). At tbc Dry Fork

rhops site (S'29), located further dowogradient,good watcr quality gencrallycxists witb TDS from 281- t'110 mg/l. Sulfateand chloridelcvcls were also low (AppendixB) @ancs and Moorq lgBS).

o u.7 REVISED7-2&88 23 Grounftntcr Hydrrologt

23J R€i@alAquifcr Charaacrisics

The BarneysCanyon Pit and heap leachi"g facilities wil be located north of tbe mouth of

Baraeyc Canyoa along the castern flanlr sf the Oquirrh Mountains, Salt l,ake C.ounty,Utab.

Grotmdwatergeuerally flows in an easterlydirection from the Oquirrh Mountainstoward the Jordan

Rircr. Depth to the water table in this part of the Salt l*ke Valley geuerallyincreases with the risc in topqgraphicelevation Thereforg groundwaterdepths wilt be grcatestnear the mountains and shallower as distancefrom the mountainsincreases. lltis occurrenceis characteristicof a groundwaterrccharge area (Wadde[ Seilerand Solomon, 19&7).

the aquifer matcrials along the nargins of the SaIt Iake Valley are charactetizrAby thick unconsolidatsdallwial sand and grarreldeposits soafnining lenses and beds of finer gained sands, silts and clap. the aquifers along the valley marginsare generallyunconfined and are recharged from precipitation, seepagefrom ephemeralstreams, inigation ditches,pond6 and resenoirg and secpagefrom be&ocll Rechargefrom the bedrockis bclievedto contributethe greatestvolume of water (approxiBately45% of.total recharge)to the ralley-fill aquifer. The bedrockis predominantly recharged in the uppercleviations of the oquirrh Mountains(waddell ct 4 19g7).

Pump testshave bccn performedou the ooarsegrained rmconsolidated aquifer beneaththe valley benc,haear BinghamCanyon The hydraulicconductivity of the aquifer -aterial has been estimated to range from 1.0 x 104 to 35 x t04 feet per second. Hydraulic gradientsare estimatedat 0.063 and substratumporosity is approxinatety30 pcrcent. Usiag thesefigrres as a basisfor the Barnep

Canyon area' averagelinear groundwaterrrclocities could range from @ to 2300 feet per year (Waddelt Seilerand Solomon,1987). Groundwater quality hes also been characteiznd at several locations downgradient and north of

Barnep Canyon- \ilatcr analysesshow a total dissolwd solids conccutration rangilg fron 430 to 910

nilligrans per liter. These dissolved constituents are dominated by calcium, nagnesiun, bicarbonate,

and chloride.

The proposedMel-Co Pit and wastedump is locatednear the topographicdivide bctweenBarnep

Canyonon tbe north and Dry Fork on tbc soutb- Dircction of groundwaterflow froa this ridge is

crpecredto bc generallysubparallel to the groud surface. As an uplandrccharge area, groundwater depths are great (approxinately600 feeQ and hydraulicgradieats would bc cxpectedfs gs highgl than gradieuts on the bench" Tte bedrock aquifer is comprised of &actured sandstoneand limestone.

233 Local Recharge(aaraasisics

The rate of groundwaterrecharge is dependenton the hydraulic e.haracteristicsof the surfcial soif underlyingrmconsolidated sediments and bedroclc Dcscriptionsof the surficial soils by tbe Soil

ConservationService (SCS) indicate clay and silt loams are presentin the Baraep Canyonproject arca. Infiltration rate is modcrate(05 - Z0 inchesper hour) and permeabilityis slo\il to moderately slow (SCS, ln4). Runofr from precipitationcwnts is rapid as these fine-grainedsoil layers linit the infiltration and percolatioaof watcr do*lward into the soil horizon Laboratorypermeability testswere also conductedon samplesof compactedsurficial soils obtainedfrom the leachpad areas;

Table 2-11 lise the results of these tests. The soils from the surfaceto a depth of 3 fcet wsrc clas"cifiedas silty to gravellyclay with compactedpermeabilitics ranging from 1.1 x 10'5 to lass than lxt0'7 oy'sec"

?6 Table 231 Permeability of Leach pad Area Surficial Soils

Sanple Sample

Site Deoth Material Permeabiliw(.cn/sec)

TP-1 05-15 Silty Ctay < 1r10-7

TP.5 05-20 Ctaywithfine sand 1.1x106

TP6 052.0 Sandyclaywith gravel < 1x10-7

TP.l1 05-e0 Saadyday with grarrel < 1x10-7

TP-U2 1.0-3.0 Gravellyclaywith sand 1.1x10-5

Beneath the surficial soils, the rmconsolidatedaltwium consisc of highly variable, layen of

clay' silq san4 gavel, cobbles,aad boulders. Most of thc -aterial cncounteredis poorly sorted including clay' silg sand and gravel As discussedin Section2.1. clayor clay-richsediments appear to be the dominantmaterial typesin the alluviumon site. The stratificationof the layersis higbly variable and wide changesin strata thic.kne.ssoccur laterally, as indicated by the geologic cross sectiousillustrated in Figures 21-2 througb 2"1€. The permeabilityof these materialswas tested in-situ through the use of packer tests in interrals up to dcpths of 65 fecL Terblrc232 shou6 thc resultsof this tcstwork. The mcasuredpermeabilities range from 3.9x 104 to 6.9x 106 on/see

The lon'c'r pcrncability strata in the alluviumwould tcnd to irnpede vertical flow of rechargc watcr and form perchedwater tables. The auger drilling conductedin the alluvium did encounter isolatcd satruatedconditions in four boringswhere the water was perc,hedabove the deeperbedrock aquifcr within grarrellyclay or sandygravel betweenclay layers. The locatiors and depth of the watertable are asfollovn: B-2 waterdepth 265 fee! B-28 waterdepth 2,.7 feo\B-3 waterdepth

%.9 fee\ andB'24 waterdepth 6.7 fceL Geologiccross sections in ngures ?^!-6 and21-?show

n Table2}2Permeability of LcachPad Area Allwium

Interval

Borins (feet) Material Permeabilitv(cn/sec)

B-l-lvfw x3-40,.6 Gravellyclayey saad 15 r 10-5

B-28-lvfW 36.0-,CI.0 Sandyclayeygravel 3.9x104

B-s-lvfW 615653 Sandygravelwithday 13x 104

B€.MW 26J-n2 SandycJay and gravel 32x 10-5

B-10-tvIW 2L.U25.0 Sandygravelwithday 85x 10-5

B-lllvf\il &.8452 Claycysandygrarrcl 6.9x106

B-l|.lvfw 41.H55 Grarclwith sandand clay 3.4x104

B-16lvfw 26J-3/J,3 Claycygravelwithsand 13x 104

B-Z)-lvflil 26.0-30.0 Clayeysand with gravel 1.9x 104

B-22-lvf\il 76.V29.9 Clapysand with gravel 22xt04

the relationshipof the perchedwater to the allwial lithotogies. The occurrenceof theseperched

saturatedconditions is not cousidcredts be signific'nt as the latcral ctrent of these conditionsis

limited

Aquifer rechargetakes place fron precipitatio4 seepagefrom ephemeralstrcamg seep4gefrom

ponds, rescrvoirq irrigation ditches and from spring. Since no pordE rcservoirs,or irrigation ditches are located within the project area, precipitationevents alone defne the quantity of water availablefor recharge. BarneysCreek ruDningfrom BarneysCanyon is an ephemeralstream and likely coaributes measurablequantilies of rechargewater to the aquifer during spring snoumelt and ntnoff Gventsatthough these events are short lived and the total anount of rccharge contributed by

surhce sccpageinto the dlwiun appcars tobe linited-

Most of the groundwaterrcclarge takesplace in the higber ele\Etionsof the Oquirrh Mountains

(Waddell' Seiler and Solomoo,1987). Ia thcse areas,shallow soils and fractured bedrock allow for

rapid percolationof snownelt and rain into the aquiferbelow. ltis rechargewater floun dovmfrom

the motmtainsand entcrs the rnalleyfill underground. Therefore,grormdwater flowing beneaththe

BarneysCanyon project area is nainty rechargedfr66 highsl elerationswhile little rec,hargeactually

takesplae in the projectarea

233 LocalAquier Cbaractccigi,cs

A total of 11 decp monitoringwelts harrebeen installedat the Mel-Co and BarneysCanyon pit areag the leach facility area, and nearbyat the Utah Copper Concentrator. Table 233 lists these holes and the depths to the water table. Contoruingthe water clevation data from these holes showsthat the rnain watcr table surfacesubparallels the land suface at the BarncysCanlon projecr site @grue z3it). From the proposedmine areanflow is generallyeastc/ard toward the Jordan

River. The hydraulic gradient at the leac,hpad site is steep,at around 0.1 ft7ft, but decreasesto about O.Bff/ft under the 53ffi topographiccoutour about one mile cast of the leach pads. Water table deptbsvary from 600 feet at the Mel-Co Pit site to betwcen140 to 350 feet below the ground surfacein the Barnqn CanyonPit area. Watcr table deptbsin tbe leach pad area rangp from 145 to 160feet belowthe groundsurface (Damcs and Moorg 19gg).

Tbe main aquifer is composedof volcanic rocks consistingof andesitg latite porphyry, latite tu$ and dacite. Aquifer tests fron wells near the Utah Copper Conceutratortocated about 15 miles from the project site reveal aquifer permeabititiesin the volcanicrocls range from 0.098- 3.0 feUday. Howener, aquifcr tesg of drill holcs BC-14 and BC-150, locatcd. at the Barnep lcacb facility, indicate hydraulic conductivitics of 6 x m'3 fl/day and 1 x 104 ft/day rcspcaively uAich arc considcrably lcss rhrn 1f,s dowu-gradicnt well. Thercfore, givcn a hydraulic gradicot of,lT% and e porosity of 03, calculatcd ratcs of bc&oce grouadwater 0ow rdocity undcr tbc lcacb pad arca

*onld range &om 0.01 to 0.12 feet per '€,ar.

certaiD site spccific data suggcsttbat thc bedrock aquifer in thc vicinity of thc lcacb facilities is confiacd. Tbc Kcnnecondrill hole BC-!|8 enooultcrcd watcr druing driltirg ar a dcptb of 165 fceg immediatclybcacath a c;lay-richvolcaaic ash bcd. SubsequentEeasurcEents of thc cater lewl iD this hole havc rcwaled dcpths to ths water froE lD, to lB flx:t u&ich would indicatc tbat thc bcdrock aquifcr i! this bolc is confincd. To bencr quartr$ the hydraulic charaacristicsof tbe aquifer bclow the BaraeysCanyon facilities, all future mouitoringand watcr wells drillcd in thc arca will bc ficld tcstcdn

The othcr lcach facility drill hole, BC-150,locatcd about 1 mile dowogradieutfroo BC-148,also cncouatcreda clay*ich ash zoae aborc thc watcr tablc, althougbtbc water tablc ia rhic tosiliss ig beneaththc bottom of thc clay zoue. This clay zone Eay bc cquiralcnt to that c,ticl forEs the aquitardi! Bc-l/E andmay also act asan aquitardir' this location.

30 REVTSED7-20-88 ll F o

o o Ll x u ld u

lt F o

NOTE - SEE TABLE C.I FOR W.ATER LEVEL ELEVATION G,ATA AND DATES OF MEASUREMENT.

'/r.0//z(esv\=:1\\\ut\\\-//,__\\\\\))\\\\ GROUNDWATER LEVEL SCALEIN FEET ol rooo o rooo 2o9o NNN\ ELEVATIONCONTOURS -/.tttt, '//za?)lltlltt,l,tK\\\\\5tllltru(KA, Figure 2.3-1 R€FERENCE AA'SE MAP FROM U.S.G.5. QUAORA'NGLSS EN - 51 \ rw Lil I TITUD nBtNGHAM CA'|,ryON, UTAHn - 1952. ^NO S- tL.ARK" UT^Hn - t952. golx greeTs f,HoTo - Dames & Moore RE\/ISED t969 A.NO r975. \N* Table2$3 Watcr TabtcDcptbs in projcct Area

DrillHole SurfaceEl.(ft.) WaterDeoth(ft.) WarerEl.(ft.)

BC{5 66,23.t 356.7 6?6.4

BC{8 6564.4 2v2. 6Tn.4

BC69 6?N. 136,.6 6143.4

BC-?1 63748 751.6 6217.2

MC€r 742- 595.9 6826.7

BC-148 6170.1 r23.2 M.9

BC-150 125.

BC-153 1@.

w-31 5368. 140.. 5228.

w-32 $a. &7. 5n6.

K-404 fi20. 724.4 1495.6

K-405 5560. 2:!96. 52&.0

Maple and Cqrtal Springs, d3aining grouadwater from tbe Pcunsylraniaa-age, Whitc Pine

Formation are upgradient of the Baruep Canyoa projea sitc. Bancroft Spti"g is locatcd

approximately 900 feet soutb of the lcach pad area. Investigations ou the water qualiry and yield of

tbis spnng are in progressand information will be providcd when available.

Thc Mel'Co Pit site is located along a topographicdivide along&e southeraborder of Baraeys

C;anyon. The upper portion of the rnins pi1 area rcsts about 1,000fect higber thqn 1f,s Barnep

I I\ ^-. 32 REVISED 7-20-8 v Canyon Pit sitc. Thc Potcntiometric surfacc bcnca& thc ridge lies at a dcpth of approximately 600

fcct bclow thc surfacc. Thc aquifcr is madc up of Kirkman, Cfinfer and Curry Formatious wLich

typically have perocabilitics tbat are quitc low. Sincc no aquifer tcsts haw bcco done at this site, pcrmeabilitics gstimalcd 31'g to be the sanc 8s the aquifer bcneatb Barneys projca sitc. Assuming a hydraulic gradicnt of l}.Vo and a porosity of 30Vo,grouudwatcr f,ow rrclocitics would aot significantly

dificr from tbose calculated at the Barncp Canyon project arca.@anes and Moore, 1988)

L3.4 Bascli"cGrouadratcr Ouality

Rcccut c,baractcrizationof the grouadwatcrquality from wclls and springs uear thc Baracp

Canyon Projcct area bas beea performed. Sincc few activities harr occurrcd nortb of Bingbam

Canyonalong the bascof tbe Oquirrb ldsusrainc,grouadwater qualiry has likety remaincdunaffectcd by man'sactivities.

Water quality aaalpcs performcdon thc wclls at thc aew Utab C,opperConccntrator (W-31 and w'32-A), thrcc monitoringwelts located1 to 3 miles dormgradieatof the projcct site (p-225, p-n6, and P'2788) and Barncp Spring (5'318),indicate that groundwatcrqualiry dow4gradicntis gcocrally good with tbe cxceptios sf high conccntrationsof citoridcs (200 - 500 nfi) Eod high 161at di"sohrcd solids CIDSXT()39- 1650 ng[) (appeadix B). Valucs grcatcr thaa 500 mg/l cxcced sccondary&isJHDg water stasd&rds. Water quality analpes from samplcstateu from aouitoriag ' wclls BC 1tl8 aad BC ' 150 west 8.udsouth of tbe lcach pad arca iadicatc grouodwatcrquality is good. TDS ralues rangc from 825 to 9U rrgl. Ficld elccrricalconductivity mcasucmenrs ir thcse wclls werc 1100 and tStQ *rnhss (see Appendix B). Watcr qnality analpes wcrc conductcd on samplcsfor Bancroft Spring,locatcd soutb of thc proposcdlcacb pads. Watcr quality in rhis spring sc0c{ls many of the samc gcneral chemicalconccntrations as was fonnd in the otbcr spring and c/clls. Thc resultsof thi

REVISED7-20-8f, Baselinegrouadwater quality paranctcrs have aot bcco cxaminedat tbe Mcl-Co Pit sitc. The

Deatcstlocatioos from which water quality data has bccu inrrcstigatcdis L3 rnilcs d6**"dient of thc pit in the Dry Fork Crccl &ainagebasin (Figurc 23.1), sourheastof the Mel-Copit site.

I! 196, conccatratioalewls of fDS (1,300- 46500 mgll), sulfatc (8,600- 17,8m mg/l), coppcr (6- lU Egn), ' c,bloride(1,g00 ?:1n rugn) and vcry tow pH ralucs near 3.0 wcrc cnoountcrcd@amcs aadMoore, 198s).A completelistiDg of tbeseralucs oaybe fouadin AppendixB.

?.4 Soils

?-4.1Tcctsical epproach

A soil sun'ey was conductedin October-Novcmbcr,198? at tbe BaroeysCaayou projcct site.

The SCSSoil Sun'evof Salt Lalc Area. Utah was ucd as &c basisfor tbc gronad suwey. Pits or

&esh road cuts wcrc rscd to obtain proElc descriptionsand dc6ne thc actualsoit boundarieson the projcct sitc. Soil sanplesc,crc obtaincdaad sent to a conncrcial laboratoryfor fcrtitity aaalyses.

v REVTSED7-U-88 The averagc surface lapr and subsurface layer thicknesseswere used to define potential naxinun

topsoil depths.

242 Soilrypcs

lto soils on the east slope of the Oquinh Ratge are derivedfrom mixcd sedimcntaryrocks or

the allwium and colluviumfrom mircd sedimentaryroc,ks. The soils of the projcct area all lie above

the 5100 foot cleration an4 thnq 8re not influencedby the prehistoric Lake Bonncville.The soils

are calcareousthrougbout with additional but variable,Iime acanmulationin the C horizons.The B

horizonsarewell developedin the deepersoils of the lowerslopes.

Plate IV presentsthe soil nap for the prqject area Five soil associationsoccur within the

projcct area" The Agassiz-BradshawAssociation is found on steep slopesin the Mel-Co pit area.

Thc Fiegcrald soils arc found on the north-facingslopes with ft forests.The Gappmayer-Wallsburg

Associationis found on ridges along the Mel-Co haul road. The Harker soils arc found in the

BarncysCanyon pit and dump areas.The Dry Crcek-CoppertonAssociation is found on the lowcr slopcswhere the leachpads will be sited.

The frrll profile descriptionsfor tbe soil associationscan be found in Appendix C-tr. Detailed descriptionsof eachsoil associationare presented below.

Bradshaw-AgassizAssociation

Asassiz

The Agassiz soils occur on the steep ridges around the Melco pit and dump. They are

35 sballow(<20 inches),well-drained soils over bedrock Thc surfacelayer is very cobbly silt loam' and the subsurfacelayer is also rrcry cobbly silt loam that is slightly calcareou. The averagetopsoil depth is 12 inchesbut numerou rock outcropswilt linit thc actual anount salwged The SCSdescribes the potentialfor erosiongs high.

Bradshaw

The Bradshawsoils occur in associationwith Agassizsoils in thc Mcl-Co pit and dump area but are usuallyfound in concaw positionsof the slopesover colluvium- the surfacelayer is very cobbly silt loam as is the ligbter colored subsurfacelalcr. The horizonsare weaklydcrreloped.

The substratumis collwium developedfrom limqstoneand quartzite.The averagetopsoil depth is

20 inche.sbut somesites will contain topsoil to fl) inchesor more. The potential for erosionis higb,accordingto the SCS.

Fitzserald

ltis soil is found on the nortl border of the Mel-Co pit on the north slope of the ridge.

The vegetationis a spruce-fir forest with limited understory. Ite surfacelayers are dark grayish-brovmgravelly loam and the subsurfacelayers are yellowish-browngravelly silt loam- The substratumis colluviumald rcsiduumfrom mixedsedimentary rocla. The topsoil depthaverages 18 inches. The scS liststhe potentialfor erosion6s high for this soil t1pe.

36 Gaopmaver-WallsbureAssociation

Gaoomaver

The Gappmayersoils are located on north-fac-irgslopes along the Mel-Co to Barneyshaul road

route. The parent material is colluvium and residuumfrom mixed sedimentaryrocts. The

surface layer is rrery cobbly loam and gaveUy silt loan and the subsurfacelayers are rrcry

gravelly silt loam- Tte depth of topsoil is Z inches.The SCS states that the potential for erosionis moderate.

Walsbure

This soil occurswith the Gappmayersoits uually occupyingthe ridge tops and upper parts of

the stccp slopes. The parent natedal is cotlwium and rcsiduun from mixed sedimentaryroctrs.

The surfacelalcrs are very cobbly loam while the subsurfacelayers are very cobbly silty loam.

Bedrock is present at 1? inches. lte deptb of topsoil is about 15 inches. The potential for

erosionis describedas high by the SCS.

Drv Creek-Coooerton Association

Coooerton

The Coppertonsoils are fouod in associationwith the Dry Creck and Harkcr soils and occur on

nalro\il ridges and drainagcsthat traversethe loqg allwial fans. The soils formed over alluvium

derived from mixed sedimentaryroclc The surfacelayers are very gravelly and very cobbly

loan and the subsurfacclayers are rrcry cobbly fiae sandy loam characterizedby lime

n accumulations. The topsoil depth arrcrages18 inches. The potential of erosion is moderate,

according to the SCS.

Drv Cteek

Thesesoils are on the easterlyslopes of high alluvial fans-in the BarneyCanyon pit and dump

area aad in the leach pad sites. The surfacelayers are silt loam and the subsurfacelayers silty

clay loan to silty clay. A distinct lime accumulationoocurs bclow the subsurfacela,,ers. The

topsoildeptb can be up to 40 inc,hes.The SCSreports that tbe erosionpotential is modcrate.

Harker-DrvGeck Association

Harker

The Harkcr soils are in associationwith the Dry Creck and Copperton soils in the Barneys

Canyonpit and dump area and occur on the higher elevationsof the fans and drainages.The

surface layers are heary loan rvtile the subsurfacelalcrs are gave[y clay loam to gravelly

clay. Tte substratumis vety gravclly clay loam- fhe topsoil dcpth arcrages40 inches. The

for erosionis describedas moderate by the SCS.

Outcroosand Talus Slooes

these arsason ridge-topsand on stecpsropcs are gcnerally devoid ofsoils.

38 RoclrvVariant

this soil oocurs on the south slope of the Baraep pit site. It is a very sballow soil of

about 6 inches over rock unli&e the surrormdingHarler soils. It would not be suitablefor

u,seas topsoil because of the e,xtremeroc,kiness.

Z43TopsoilOuafty

All the soil materialsare very gravelly and/or cobbly and are, therefore,dominated by coarse particlcs. The soil tcxturcs range from tsarns [s silt or clay loams to silty cla]6. The organic mattcr is utully aboveLA% x'hich is higber tbal that normatlyfound in f,esin asd Range soils.

Sufficientplant macronutrientsof nitrateg calciuq potassiumaad magnesiumare presentfor plant grouth- Phosphonrsis deficient as is rsually thc casein Basin and Rangesoils. This wi[ require fertilizationto correctthe deficiency.

Laboratoryreports for soil ferdtity andchenistry are prescnted in Appendixc-tr.

The eoil quality for each of tbe principal soil qpcs identified in the soil surveyare described below:

Bradshaw-AeassizSoils

Thqse cobbly silt loams are slightly acidic with a high percentage of organic matter in the

surface and subsoil horizons. The cation exchange capacity is moderate. The phosphates levets

are low as e,:rpected"

39 Fitzeerald Soil

This acidic soil is cobbly and coarse.It has a moderateto low potential for nutrients. The

organic mattcr level is moderate.fhese soils will probably be only sllghtty disnrbed by the

rrining operation"

Gaoomaver-WallsbrugSoils

Thesesoils are neutral and noderatelyfertile. The organicmatter is about LSVo.T\e phosphates

are low. Somehighcr-than-normal copper and sulfate levels are found in the surfacehorizons.

C.oooertonSoils

The relatively shallon,Copperton soits are sligbtly acidic with moderatc fertility. Ttere is a

moderatc amount of organic matter is the topsoil materials. The coppcr contcnt is relatively

high ia the surfacelayer.

Harker-DrvCreck Soils

These soils are generallydecper than othcr soils of the arca and will provide the bulk of the topsoil material This is cspeciallytruc for the Harker soils rvtie;h are the deepestsoils and occllpy much of the distubed areasof the BarneyPit and dumps.The soil tetrure raries from loan to clayloam with clan in the lovrcrB horizons.

The soils are aeutral to slightly nllralino with moderate fertility. The perceat of organic matter varies but is gcnerally lower tban the other soils in the area. Phosphates arc low 8s cryected-

,10 one incident of high copper leversin the sruface horizons was formd.

25 Vqrtatim

The Barnep Canyon area of the oquirrh Mountainsranges from an clevationot g242 fcet at Baraep Pcat to 5,100fcct at state Highway 111 on the cast slopcs. Gcncrally all of the major plant commuaities are nariantsof thc oa&doninatcd mountainshrub plant The ganbel oak (OuercuS.sambeliil gs occurs :rnnlt shrubson the higher c4osed ridgpE as tall shrubson srnnll trccs on the protcctcd upp€r stopcg as medium shrubs at mid-slopcs,and as *nrlt shrugs in scatterpd cl.mps on the rourcralwiar, sagsbrush-dminatcdslopes.

The steep tcmain cmphasizesthc difrcrcnce in aorth and south aspects. Conifen and heavy standsof sbnrbecharactcrize north aspectsrvtile south and west aspectssupport pure oak stands and curleaf nahogany (Ccrcocamus tedifolius) stalds on the rocky soils and outcrops. Sagebnrsh (Artemisia tridentata) atso edsts at all elerationsaad in most of the plant commrmitiesbut bccones

doninant only on the lower alluvialslopas and ridgc tops.

A vegetation conmunity map was dcvclopedfor all thc arca affectcd by thc o|I,erallmining project' This map is prcseotcd on Figurc 25-1. The arca was surrrcyedon thc gropnd and comumity boundarics drawn onto topqgraphicnaps. one hundred-foot,line-point transectswerc run in cachmajor plant conmrmityon the sitesof proposcdmining activity.

The rregetatiranapping arbitrarily establishedboundaries for the rlariousoak sbrub communitics as dcscribedaborrc' In reality thcse communiticsdo aot harrcdcfinite boundariesbut grade from me communityto the ner. Thug many connunity bormdariesor e,rtremitiesare charactcrizcdby ccotoDes'AIso many subcomnunitiesor cscnsionsof a-djaceatcommrmities can exist within the

4l vik-///, major com'nunities rsually due to terrain aberrations.

25J Oat Woodlaads/hfiourtainBrosh Cmmty

This plant rangesin eleratiou from 6800 feet to 8200 feet. It is characterizedby oak woodlandscomposcd of rrnnll trees on favorablesites but can be oak shrub stands on less favorablcsitos. The opcn arcasbstwscn shnrb and trcc standsare rrcgetatcdwith grasscsand smrll sbnfts. ltc north slopc vcgctatioucan cxist within the generalarca 8s snall standsin pocketsor as commrmitiescovering large steepaorth slopc ueas. grnnll standsof aspcns(beulus tremuloides) occrr in thc dccper soils of stccp drainagcsor qfictp thc melting of snow ba*s keeps the soil noist. Therockykuollsofshallonreoilareasmaybavestandsoforleafmabogany.

This comormityoovettdl the Mel-Copit and dumpsite areas.

The rrcgetatirccorrr for this plant communityissummarized as folloq6:

Groud Correr,percent:

Bare soil 14, me,as2.7

Rock $.6, mean 3.0

Litter $-48. mean28.2

TotalNon-vegetatiw D49,me.an?43

Vegetative 51-?&mean65.?

Overstory 6[ mean3g3

VegetatircCover, species ranked byperceat:

Ouercussambeti (Gambeloak) 20.0r

Aproowonsoicatum (blue-bunchwheaSrass) 153

Balsamorhiza sacittata @alsanroot) 13J

43 PoaNevadensis (Nevadabluegrass) 43

Chrvsothamnusviscidifl onrs (grecorabbitbrush) L:7 o Mertensiasp. (bluebells) L7

Elrmus daucts (blueryegrass) LO Bromusmarcinatus (mountainbrome) 1.0

Rosawoodsii (woodsrose) 1.0

Seneciosp. (Scnicio) 1.0

Lathvnrssp. (wild sntectpea) 1.0

Penstemonep. @enstcmon) 0:l Bromustcctorum 03

Solidasocanadensis (goldenrod) 03

rrnlcnowa forbs 33 ' docsnot includesa! classifiedas oveEstory

RangeCondition: Good

Productivitlr24m lbs.

252 Shn$ Oa&tsigSagrnmsh C@nudty

The uppcr and lourcr elevatioalimie for this coumunity are approximately8800 feet and 5500

feet respectinely. This conmrmity occupiesa large arca of midslope,and the site is distinguishcd

from the uPper oak commuaityby the lac.kof long steep slopesand a more rolling terrain. The

lower elevationbormdary oocurs along &e uppcr allwial slopesand is indisthct. The oak brush is

formd in large scatteredstands and rarely reachesthe brg sagebnrsband grasses. The nortl slope

vtgctation is a mixture of bigtooth maple (Accr crandidentatum)and large oak" As elevation

dccreasesthe oak is confiaedEoro to north slopcsand drainages.

4 The Barncp C;anyonpit and dunp and the leach pad and proccsssites arc located within this comnuity.

The rrcgetativccovcr for this plaot conmrmityis snnnarizodas fo[ou6:

Groud Cor€r,pcrceng

Baresoil 5-8, aeant4.7

Rock 1-1t mcan 7.0

Litter 2&30.mean 25.0

Total Non-Vegetatirrc *59,meat46J

Vegetative 4L-64.,mean533

Overstory None

Vegctatiw Cover,ranked by pcrcent:

Ouercrseambelii (Ganbel oat) 8.0

Artcmisiatridentata (brgsagc) LL:I

Chnnsothamausviscidiflonrs (gecn rabbitbrush) 3J

Elvmusdauca (blue$cgrass) 33

Pachvstinamwsinites (mountainlover) 23

Balsanorhizasagittata (balsanroot) L0

Ac,hilleamillefolium @rros') L0

Cercocamusledifolius (orlcaf mormtainnahogany) 0J

Asroovronsoicatum (bluebune,hwheatgrass) 1.0

Lcoidiumoerfoliatum (pepperweed) 03

Elvmu cinereus (GreatBasin wildrye) 0:7

Koeleriacristata (prairiejrmegrass) 03

Bromustectorum (cheatgrass) 03

Solidaqocanadensis (goldenrod) 03

unknoumforbs LJ

45 Range Condition: Fair

Productivity 19mb6.

53 Big SagcbrushCb''-nin''rly

This connrmity occupicsthe alluvial slopesfrom about 5,650feet to 5,1fl) feet in eleration

Ttis vcgetativeoommrmity occuts latgely to tbe cast of thc project area; horercr, portions of this communityerCend into the oak bnrsh zonc aborr on the large flat alluvial ridgc tops. The oak and a few maplesare confinedmostly to thc drainagesand snall north slopcs8s big sagebnrshdominatcs all thc other sites. ltis comnrmity originaly supporteda good of percnnialgrasses that hare bccn largelyreplaced on the flat ridgp topswith winteru&eat fields.

This conmunity occurs at the easteralinit of the project area; however,the proposedproject aooessroad crossesiL

The rrcgetativecover for this plant conmrmityissummarized as folloc,s: GrormdCover, percent:

Baresoil 69, mcan 23

Rock 0-g, mean 2.?

Litter tl-12. meant5.o

TotalNon-Vegetatirc 21-30,mean 25.0

VegetativeCorrer 7F7g,mean?5.0

Orrerstory None

VegetativeCover, ranked by perceut:

Artemisiatridentata (big sage) 5L7

KoeleriaETistata (prairiejunegrass) 6.0

s Chrsothamnusviscidif, onrs (gr.eeorabbitbrush) 3.0

Bromustectorum (cheagrass) 3.0

Lcoidiumoerfolatum (pepperweed) 3.0 Eriqeronsp. (fleabane) z7

Erieeronsp. (annual) (fleabane) OJ

SitanionhvsEh (squirreltailgrass) OJ

Ambrosiaosilostachva (westernragweed) OJ

Ouercrseapbelii (canbel Oak) 03

Verbascumthaosrs (flannelmullein) 03

Asoovron soicatun @luebunch 03

Hvmenoxnrichardsonii (snakevteed) 03

un&no*nforbs L3

RangeCondition: Fair to Good

hoductivitlr 1500lbs

25.4 Nortt Soge/CoonhsSnrobsCar'rrnrmitt

This conmrmity is confilredto the steepslopas of the higher terrain rsually above6,800 feet in cleration; bowever,snatl coloaiesmay cxist at lowcr in select sites. The sites occupied by thc north slope rcgetationare thc monemesic iu the Oquinbs and rsually support the largc trees and thick brush stands. Saon' oover may persist here rmtil carly sumner keeping the soil noist.

This is the only communitywherelarge stands of conifersare oommo'-

The proposed haul road from the Mel-Co pit to the planned leach pad area is located iD this

n The vcgetativecorrcr for this plant communityissummarized as follows:

GroundCorrer, perccDt:

Baresoil 1

Rock 5

Litter !6. Total Non-Vegetative 2,

VegetativeCorrcr 78

VegetativeCover, rantcd by pcrceat

Ceanothus\rclutiils (buckbrush) 60

Pachrntinamvrsinites (mountainlovor) 7

Svmohoricamosqp. (soovberry) 5

Mahoniarcoens (Orcgongape) 3

Cercocaronsmontanus @irc.hleafmountainnahogary)1

Carexsp. (sedge) 1

rnknoqm forbs 1 Ovcrstory

Abieslasiocama (subalpinefir) 37

Prunusvirsiniana (chokcclerry) 32

Cercocamusledifolius (arleaf mountainnahogany) 4

RangeCondition:Good

Productivitlr2300lbs

255 RiparianC@'''lrr'"t

The riparian comrnunityvaries greatly dcpcndingupon the size of the drainage in which it oosurs and elerration- Generally,riparian standshave trees and shrubsthat grow in deusestands and are taller tha" the surrounding rrcgetatirc commrmity. Whcre drainages harrc wide flat c,hannels

atd floodplains, tbe deciduoru trces cqn form crensive woodlands.

The plaaned baul road segmeotwithin Barneys C;anyonwill pass throryh a large riparian community.

Thc riparian comnuity adjaceatto the chanel in BarneysCanpn is doninated by large stands (Acrlt of maple sandidentatum) with scattered birches (@lt occidentalis),spon fpooulus

tre'muloides).chokecherry (Pnmrs drgipiana), and bluc clderberry (Sambucrs caerulca). The

undcrstoryis conprised of nettlesfurtica g&I and pcrcnniatgrassos. Thc overstoryrmries from ?& 100 percent oovcr. Tte rmdcrstoryrangcs &om G,35pcrcant oovcr as the result of sbadingand acsrmulationof leaf litter.

Thc rangoconditioa is consideredgood howe'erproductivity.is'nknown

2.6 f,iitdtift

The oquirrh Rangesupports a large mule dccr herd and an elk herd. The elt generallysunmcr at the upper clerationsin the north slope conifer forcsts and in the upper reachcsof the oak bnrsh zone' The deer utilize all of thc oak brush zoneand the higher elernrtionsfor summerrange. Deer winter range is the mid'oat zone doum into the lower sagebnrshzoDs on the alluvial fans. Elk winter generally at higber elenationsthan deer but do occasionallyresort to wintering ia the wheat fieldsat the edgeof the rralley.

Ptesently the elk population in the Oquirrh Range is estimated at 500 enimrlc that are conceatrated nostly in the northern portion of the range (pcrsonal commrmication, Graat Jensg Utah Division of Wildlife Resources).

o The deer densityis about 0.17deer per acre q 6 acresper deer. Othcr commoarnernmrls is 1f,s

aroaare coyote.s,lagomorp\badgerg skunes and the lesscommon bobcat.

Raptors use the Oquirrh RaDgefor aestingsiteg summcrfe€ding areas on the upper slopesand

sintcr fecding areas along the lower slopes. Golden caglesnest in the cliffs on the crest of the

range. Cooper's hawks nest in the oak bnsh zone wcre small birds are plentiful and red-taited

hawksnest in 1f,s cliffs and large trces in thc canyongas does the great-hornedowl Harriers are

commonyear-around in nct of thc habitats. A fall sureeyfollowing leaf fall did not rcveal any

raptor nestswithin the spccificproposcd disturbcd areas of thc project

Barnep Canyonand tributary streamssupport a riparian comnrmity of trees and shnrbs. Large

trees of maple and oak are used as nesting sites by many bird species and the sbrubs of

chokecherry,elderberry, serviceberry and others provide food for them.

50 3I} OPERATIONPI.AI{

The planned locations of the rrarious project facilities are shown on Figure 1.1-1 and a detailed layout is presented on Plate 1. The proposed project consists of nx,o open pit mines and their associated d-pq a crushing plant, heap leach facilitieg a carbon adsorption, desorption and regeneration (ADR) plant a gold refinery and necessarysupport facilities.

Peak cnplolmcnt for the project is cstimated at 145. ety 85Vo of the work fore will work druing any Z-hour period. lte remainder of the penonnel will be off. Sligbtly lcss tha' 507o of the work force will work the day shift and the remainiag employecs will -a. the afternoon and nigbt shifrs.

Enployees will reach the project site via the accessroad from State Highway 48, and the cmployeeparkiag lot will be located at the administrationbuilding. Enployees working at the truck shop, $e mins pis, the cnshing plan! leaching facilities and process plant will be transportedto theselocations in crew-transpsrtminlguses.

3J Dcscripim of trfincml Dcpcits

The gold in the Barneys Canyon deposit is hosted in sandy dolomite and sandstone. The ore in the Mel-Co deposit is contained in calcareou sandstone. The geologl of the Barnep Canyon and Mel-Co mineral deposits is described in detail in Section 212. Tbe Baraeys deposit is a sub- horizontal oocurrenoe of gold ore that is highly variable in thickness and overlain by zso (0) to perhaps 4{D feet of owrburden. Maximum pit depth is planned to be approximately ?50 feet. The general geonetry of the ore deposit is shown io plao and in cross section in Figrre A-I-1 which is found in Appendix A (CONFIDEI{"flAL). The Mel-Co deposit is a near-r,ertically dipping ore deposit that is somewhat elongate io plaq as Figure A-I-2 in Appendix A (CONFIDENTIAL) shoun. The Mel-Co ore body is e':rposedat the surface; however, removal of owrburden above and adjacent to the ore body will result in a pit with a maximnm depth of approximately 760 feet.

32 Mning

The Bar:reys Canyon project will consist of nvo separate open pit nines, the Barneys pit and the Mel-Co pit. The locations of these pits are shoum on Plates I and III. The Barneys C.anyonpit will be located at an averqge elevation of 6,600 feet AIr{SL on predominantly sou&-faciag slopes which

51 REVISED 9-29-89 form the flent< of the north wall of Barnep Canyon- The Mel-Co pit, located 15 miles southwest of the Barneys Canyon pit, occurs near the headwaters of &c right fork of the Dry Fork Creek 1ft'ainege,a tributary ts f,inghap Canyon. ThE Mel-Co pit site is on a south-facing slope at an averageelevation of 7,{69 ;"",.

321 Irrfiningapcmtims

The Barncp C;anyonrnins will operate 52 weeks per year and ? dap per week on two 12-hour shifts per day. Mel-Co is also planned to operate 12 montbs per ),ear 5 days per urcek oa two lG hour shifts per day. The madmum average ore production rate will be approximately 7,000 tons pcr day.

Work to date at the mine sites has consistcd of oploration drilling, construction, 6ad mining of orarburden and ore at Barneys Canyon. rnitial overburden removal began in February, 1989. Prior to commencement of mining activities, thc topeoil at each pit has been and will be removed and placed in topsoil stoclpiles. Topsoil rn'nagenent plans are presented in detail in section 3.2. Vegetation will also be removed.

Ore and waste will !s rnined by dri[ing and btasting loadi'& and truck transport to the crusher rnins 6d waste dumpg respectively. The blast hole drilling prqgram will serve the additional purpose of providiag sanples for analpis for grade control. the gold analyseswill be performed at the on- site analytical laboratory. Dri[ing wiil be conducted with either tracked or rubber-tired, 360-horsepower diesel air drills. Blast holes will be drilled approximately I feet deep on 16foot @nters with blasting faking placc only during the day shift. An average of. 29i?S tons of ore and waste will be blasted per day. Blasting will be coaducted Eo as to rninirnize aoise and vibrations. Up to a total of 136 blast holes may be drilled, loaded and shot per day. Amnoniun nitrate/fuel oil (Al'I/Fo) will be the primary explosivc agent and will be supplied to the blast areas in bagged or bulk form by truck.

Blasted ore and waste will be loaded wlth 72 cubic-yard, 540-horsepower, diesel-powerd hy&aulic excavators and Cat W2 C front end loaders. The excavators will generalty not require dozer assistance- The excavators will load ore and waste into Ss-ton-clasg off-road-t1pe haul trucks. Run-of-rnine (RoM) ore will be hauled to a coarse ore stockpiles which will be located at the crusher. The crusher will be located nor&east of the Barnep Canyon pit and will consist of primary and secondary ansherq screens, and an agglomeration facilities. The ararage haul distance

52 REVTSED9-29-89 to the crusher from the Barneys Canyon pit will be approximately 135 miles. Run of mins - s1s frs6 o the Mel-Co stockpile will be transported to the crusher stockpile by 55^or 85 rear dunp/baul trucks. The maximum ennglt production of ore wi[ be 2314,ffi tons. Annual maximum waste production will take place in the secondyear of operation and wil be 8,0(X),0(X)tons.

Waste rock, or overburden, from the Barnep Canyon pit will be hauled in the 55+on haul trucks to one of three rnins dumpg located north and east of the open piL as shown on plate ltr. Waste rock from the Mel-Co pit wiU be hauled to the mins dnmp located southeast of &e pit (plate m). Average waste hauling distances for the Barnep Canyon and Mel-Co waste rock wi[ be approximately 1.0 mile and 0.2 mile, respectively.

Fugitiw dust emissionson haul roads will be supprcssedby application of water by a 350- horsepower,8,000 gallon water truc,k cquipped with six spra),s. The water truck will operate as requircdfor drst coutrol.

Dumps will be created by end-dumping waste from thc haul aucks. The dnrnps will bc constructed in lifts of up to 500 fect in heigbt at Mel-co and 300 fcet at Barneys, each with slope angles of 37 degrees. Trac;k-6,pe dozers will be used to assist in pushing waste rock over the dumps.

Other operations that will talc place as part of rnining include grading of road surfaces by 150 horsepower motor graders and general horsekeeping and materials handling functions. In addition to initial construction of haul roadg on-going construction of drill pads and haul roads wiu take placc throughout the life sf ths mins. Road constructioa will be carisd out by two 37Ghorsepower, tracked dozers,with dd[ing and blasting ued where neoessary.

322 Nfme fit Cmfigurations

The locations and maximum ercents of the Barneys Canyon and Mel-Co pits is shown on plate m' Each of the pits will be developed with 20 foot benches. Safety catch benches with 6 minirnsp 27-foot width will be left every 60 feet. Mediatr bench face n,,gtcs are e:rpected to be 25 and T6 degrees for the Barneys and Mel-Co pits, respectively. A maximum interramp or overall pit slope angle of 47 degreesrqsults from this configuration is shown on Figures 32-t arrd32-L

53 REVTSED9-29-89 t,t 'l-*-;E t, Hl$tffi'm"Lllf lcrr \--r. r grncb lecr Aqh C Zoar

:l''; t.-1 !.-, '-:;r -1f HRffiLH.#Ti?i: :'.. lGl -l= tr / rl: 't ..r', O ; ..) '::r (t

:.''ir ilt I c:.-- rl i:i ,. iJ) ::-l t lJ ,=t Figure 9-5: ,,rnfr o l'.'-., DesLgn Bench Configuratlon for Barneys CanyonHighwalL sector. 'l*"*EE s $ii$'i:il*l:i"Ll:f, Bench pecc Anglc t Zoaa

;- l, :.:- f- 60' fr d-- nr 'll HR8ffii,.{i:ifiii _(oE; E ?i,,n ,2. C =:- C' o i:; :; Gl I l=l r'- iur ;*' N .?t;, e'!'

:-j = L:- :()] t' Figure 9-4: Desi6n Bench configuration for Mel-co. The interramp slope design at the Barnep Canpn pit wiU range from 38 degrees to 47 degrees; the Mel-Co pit is designed at a 47 degree interranp angle. Present surface topography and ultimate pit cross sections for the Barneys and Mel-Co pits are shown in Figures 32-3 & 4, asd 32- 5 & 6, respectively.

323 fr. Sloec Stability AnalJris

Pit slope stability has becn analyzed based on the pit configuration discussed in section 322. Rock fall and large-scale slope failures were considered (Call and Nicholas, Lgt37).As a result of this anal)'sis, the safety benches described aborre,combined with safety berms, were designed for control of rockfalls. The bsnches will be constructed with berms located Tl feet from the bench face to provide a 14 foot wide impact zone. The berms will be 5 feet high, 13 feet widc at the base and have slopesof 13 to 1.

The stability anal)rsis indicates that large-scale slope failures 6rs untikely. ffus mins witl be operated in accordance with all Federal Mine Safety and Health {rtminisrstisa (MSI{A) guidetines and standardsfor nine safety,whic.h include reguircments for pit slope stability.

33 Croshing Scrccring, ConseyingaDd Stoctgiling

The crushing plant receives run-of-mine ore and delivers crushe4 agglomerated ore for constructing heaps. The crushing operation is depicted on the flow diagram in Figure 3-11. The limia of the cnrshing plant etrend from the stockpile to the heaps constructed by the radial stacker. Fifty-five-ton ore haulage trucks trsnsport ors to a stoclpile located a-djacent to the prinary sprshing plant. A rock breaker is used to break oversized rocks. ore is reclaimed from the stockpile by a Caterpillar 9888 front-end loadcr and placed in a 35-ton crusher fecd hopper which dischargesto a vibrating grlzz:lyfeeder.

GtizJy oversize @ar separation is 6ve inches) fals througb an enclosed chute directly into a 42-inch x 48-inch prinary jaw cnrsher. In the pringa'-y crusher cavity, ore up to three feet in size is crnshed ninus to nine inches. Grirzily undersize is aiiscnargcd through an encloscd chute onto a tl&inch x 232-foot conveyor le6rling to the secondary cnrshing plant. Size reduction in the primary jaw cruher oocurs at a four-inch closed-sidesening. Jaw crusher and grizzly rmdersize

56 REVTSED9-29-89 lrj tJ lrJ t lg tr, Il, tr, llrl tJ G' tt ut tn :ut ut w tt, U' u, w w l\l .|\| (\l a\l G| GI g GI N ol o ,o g ol t @ 6 N J o vt @ ao @ o @ ,\ t- r-

\ h= K*- ?LRil VTAI \- cos-l s|attrc ontt|ffnrl0rl 0F cao$ legrtar ilRP \ q=-_ tl i-' \ I "l t \ ',zoA,ilz \l \ sr2

Blr0 \q \ *rrf F

\ 1200 fl 6200 5200 r 'I0(J tr-Elll_l L] :i i\ f 5100 8100 ?di 3 Ln_t-boso 6000 6000

5900 5S00

.5800 s800 Figure3.2-3 lrj LJ LJ u lJ lrJ LJ f.J L, l^J lr, lr, lrl tt v, tO ui, t) u, v, rD u, lr) u' (\I (\l (u n, (\|NOta\rn, o, .\J N o t) BP MINERALS AMERICA oc)a\rt@ o o o, J o o U.'@.o@@ ao t\ F -F t\ KE}INECOTT BARNEYS CANYON PROJECT rl ernT Setl L.k. Corrnty. Utlh n l! a TI TLE: BRRNEYCRNYON PBESENT SURFRCEIA/ PITS R, B, RNDtv9 L-]^I JLL I r RT 29U00 DFTE: 2 DECEI"IBER1987 H0RI Z0NTRLSCf;LE: 200. 00 FT/" EAST-WESTCROSS SECT!O[\ VEBTI CRL SCRLE: 200. 00 FT/" ( (BEH BARNEYSPIT o BRNGE:-3t 25 I N FR0NT)ggpvod 2s I ND) IoP0GnSPHY nF8CE t I ERFrfEv PnESErfT9U8r8CE I0P068e?llY SU8FRCE801 r EFBTIEYSCRilYON PIT R Io?ocRFFltY9UnFFCE 00? i BBnfEYSCFrfYorl PII B ]OPOGR8PHYSUNFRCE 803 ; ARRFEYSCNiYON PIT C z z z z. z rn rt at, tt tt' (\, (\l AJ o, GI (D ct o (\, J o ct o o o (\l (.I (\l (\, lzooo

?000

6900

6800

6?00 PLRT{VIEII SHOfltilGONTENT8TION OF cn0ss sEcTIoNtlRP 6600 N I

6500

6U00 o

6200

I s 6100

roo:

5900

5800 Figure 3.24 BP IiJ|INERALSAME_EIC.A- banxevs cANYoNPRoJEcr OO E. xex-xicoif ' R, B RNDC N-5 SECT. RT 7 1 S.lt L.k Cor,ntY. Utth TI TLE: BRBNEYCRNI0N PnESENT sURFRC|: IA/ PiTS ONTE; 2 DECEMBER1987 NORTH-SOUTH 5cRt-r' 2oo -oo F-.!/.: HijAizsNTnt- -oq CROSSSECTTON VEHiIcnl5cnLE: ?oo -F\1:ND BARNEYSPIT P ftftHhftft,urrfi*i*ik#,*tHl*i'*ffu*nl @| coxs#;tr+Erertu*rou o trl i^J lrJ t trJ lr, lrJ lrl LJ ld lu o oC) o o o o o o cro ct o o o o o gr= (r, o o o o o tt, qt Irt t\ o - I I I 7800 7800

7?00 7?00

PL8}I YIETI 7600 sHor{tt{G0RrErTSTI6[ 0F 7600 L t- cR0:t!tsEcItoN i8F -1_ '523 N \ I ?500 a ?500 't{'''r \ 'q38 \ -'t-- ?qo0 ,ffi Trltlo t3<" 1338 { \ tal1'. \ { 7300 7300 ngf - h-1 il 7200 7200 L I l_ - 7100 7100 'r s - -'l tdza 7000 ?000

6900 6900

k frj frJ lr, lrj rdl.l.tL,uJ o ct c, c, (f oooc'o o o o cto crgooct {q} u, a, g, a (tt3 ftt a tll Ann rl TI TLE: MELCgPRESTNT SURFRCE RND ULTII,IRTIPIT, E-t^I SECTI ON NT2LI OUU I\ Df;TE: 2 DECEMBER1987 HORIT1NTRLSCf;LE: 200.00 FT/" VTRTICRLSCFLE: 200.00 FI/" Figure 3.2-5 RRNGT: 50 (IN FR0NT)-s-0-(BE-ttI-N0l--- ..-^---- ioFitbhnletri'sunFnclEti rEtco oEPoSITPhEstrr lqnaEsr-FoolTqPo- (l.$tqEof tr/87 ia-r--LB-IEAciletr cnsEE Ecailotlcs. rr/20/87 tq00 8u, PRSS2 BP MINERALS AMERICA i;F66HHhiiistiHFHfE KENIIECOTT BARNEYS CA}IYOII PROJECT Salt Lak. Co(rlty, Ul.h EAST-WESTCROSS SECTION MELCOPIT

COIISULTAIITS GROUP l

z. z, z. z. z. z. z. z. z. z. z, (f o o C) o o o o o o o c, o o o o o o o o o c, (\, at G' o (\l :t @t cE! c) tt) tt) LO lt, ln 6 ?800

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PLRNVIEII ?600 STIOI{IIGORIENISTION OF CROSSSECTION IIRP N 7500 I

7q00

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z, z, z. z, z, z. 2 z, z. z, z, c)oooo o o o o (3 o ooocro o o ct o o ct o$r=@@ o (\' .D o c, J==== ll) rt) ltt (rt rt) PIT @ TI TLE: MELCOPRESENT SURFRCE RND ULTIMRTT rIt, N-S SECTI g N RT 5OO E. DRTE: 2 DECEMBEB1987 HgfiITANTRLSCFLE: 200.00 FI/" VERTI CRL SCRLE: 200. 00 FI / " Figure 3.2-G BRNGE: 50(IN FR0NT)50(BEHIND) T0POGiR?HYSUAFRCE t r iELCO 0EPOSITPfiESENT NEB8EST F06T T0P0 (KRIGEOIrr/87 I0P0GnRPtlYSUffFeCE 2? LR LERCHPIT C8SEE ECOlf0lllCS. tl/2tt87.fl00 00 BP MINERALS AN'IERICA r 8U. PRSS KENNECOTT BARNEYS CANYOH PROJECT Salt l-;rlc Cwrly, Ulah NORTH-SOUTHCROSS SECTION MELCOPIT

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It fiil ET il 1fl il E- I rl P lE I lFl p ivl t '+i-l (t =Ed3 B* rii nl *E *E a7F; FI :i Bi AE ;! fi: :F :E Ng I Lar o IE B o c Hb o HI Hr olsl nt I BAol I E HEE r rn o f, 3E$ o (o iniFi o f, '0eg EE:B 8Frt a o qe HH; o z 18. o n -(o ml BFF (lo! L= o rqq B t ; t ! { 3 i

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It a 6 t e{ fr I 3 .tl o c m8 (! a(o il lr prducts are conbined and transportedvia a 48-inch oonvcyorto an eigbt-foot x 2Gfoot double- deck vibrati'g screen Capacityof the crushiqgfacility is 650 &y sbort tons per hour. oversize from both EcreiendeclG is conveyedby a serias of 36inch coaveyorsto a five-and-one-balf-foot standardcone crusherwhich is operatedin closedcircuit with the scrscnto producc minus one-and one-half-inchproduct.

Ccmeat &om a 15&ton capacitysilo is dumped at a controllcd nominal ratc of around tsn pounds p€r toB to the minus-one-and-oue-half-inchscreen undersize product. Tte combinedore- ccmentEirlue is transportcdvia a conveyorto the fiw 36inch x ZL,foot agglomerationoonveyors" watcr is added by spraln on the fir,c conrclors to produce an agglomerationproduct suitablefor heap coustruction" Agglomcratioais a techniquethat conobinesthe water and fine cerncntwi& the orc to facilitate inprorrcd leachingand gold csraction" The moistue content of tbc agElomeratcd ore is controlled to approximatcly10 to 12 percent. The agglomeratedore is transferredfrom the crushing plant to the upper cdgc of &e teach pad area via interconnecting36inch overland conveyorbelts. The last overlandoonveyor discharyes ooto the first of a seriesof 28 portable 10s foot-long @nveyorsfor subsequentfeed to a 100''footradial arm stackervia the transfer conwyor and a shuttle type stackerfeed conveyor. The stac&crprogressively retreats up the leach pad to spreadag9omerated ore evcnlyon top of the overlinerblanket or previors lift. Clanide solution is spraycdon the ore to initiate the lcachingof gold.

Initial plans call for the crushedand agglomeratedore to be stackedin threc lifts of 17 twt each to a total heigbt of 51 feet. The specifiedlift hcigbt Eay be inceased or decreasedin the future dependingon metallurgicalresults. The maximumore heapheight is linited to l25 feet.

To ensureheap stability, ." or*iro [fts arc stacked,thc toe of each new lift is set back a pre-detcrmined distancefrom the crestof the prior lift aroundthe fuIl peripheryof tbc pad.

Watcr spra'6 at conveyortransfcr points are patt of the dust suprassionsystem that controls both moisturecontent and air quality.

3.4 Irachiqg

Ore will be transferredfrom the aushing arca to the leach pads in a seriasof fixed overland oonveyors' Thc rarlial stackerwill stack the ore into l7-foot-high lifts on the previouslyprepared leac'hpads. The ore will then be sprinkledwith a weak (1 pound NaCN per ton of leach solution)

62 REVISED 9.D.89 sodium cyanide and sodium hydroxide (NaOH) solution. Wobbler-t1pe spray heads will be used. The solutions wi|l leach the gold from the ore as they percolate tbrouoh the heaps. The resulting "pregnant solution" wilt be collected on the pad and piped to a lined pregnant solution pond located adjacent to the process plant at the east end of the property. Pregnant solutions from the pond will be pumped to carbon columns located within the process building, rvhere carbon adsorption will tate place. The loaded carbon columns will then be processed further thtough desorption, elccuowinniag aad 36fining. Tte leach pads, solutioo ponds, aad process luilding locations are shoc/Don Plate ltr.

3.4I lrac[Pads

A total of approximately 170 acres of pad area is required owr the life of the projec! assuning that three l7-foot tifts of ore will be placed on cach pad- The pads haw been designed and approrred by BWPC for a maximum orc heigbt of I25 feet. To rcduce capital outlay, thc pads wi[ be constructed sequeatially as nceded with the BC-l leach pad constructed in 1989. Other pads will be constructed in later years. The general arrangement of the leaching facility is sho*u on Figures 3.+1. A generalized drawing depictiag itre rnajor oonponents of leach pads is shorm on Figrre 3.*, Z Leach pads will be sized and arranged on the site to reduce the amount of grading required for pad foundations

Leach Pad Foundations

Each pad will first be graded to produce a firm foundation. Grading wiU be preceded by vegetation and topsoil removal. The topsoil wil be placed in stockpiles for frrtrue use in reclamation of the facilities. The pad foundations will be built with cut and fill techniques where the alluvial soils will be excavated from the tidges and placed in the low spots as engineered 6lts. The backfills wiu be raised in horizontal lifts not s:lc€€ding &inches in thickness, conditioned with moisture and compacted to W95Vo of na:rimum dry density (see Appendix E for full specification). The general grade of the pad foundations will slope along their long dimensions at 6% naximun and less than LVo along their short dimensions so tbat each pad will have its lowest poiat in a corner for ef6cient solution collection (Figure 3.+3). Stability analyses performed by Sergent, fhuskins snd Beclnilith (1988) indicate that the heaps will be stable. fte detailed grade of the pad surfaces will typically accomnodate the topography through the use of long terraces which themselveshave slopes along their long and short .linensions for drainage of solutions (Figure 3.+3). The fi'ral foundation grade forms a sub'base with a permeability of less rhaa s;. equal to 1 x 10-6 cm/sec upon which a leak detection slatem is placed"

63 REVISED 9-29-89 N

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Liner Irak Detection Srntem

A Six-inch-thidq high permeability pad drainage s),stem is installed above the compacted low- permeability subgrade. The purpose of the leak detection s)4stemis to alert operations personnel to solution losses thro'gh the HDPE and clay liners. T:pical cross sections of the pad lining and leak detection systemare shown on Figure 3.43.

Irak detection under all areas of the pad is accomplished by monitoring the presence of any solution 0ow in a closed HDPE collector pipe which connects to a series of two- or three-inch- dianeter comrgated polyethyelene pipes resting on the subgrade (Figure 3.+t. Each pipe exits at the side of the pad- The leak detection pipes are factory-miilsd with 0.66_inch-wideslots placed on tl0-foot centers. .d rninimsn slope of one perccnt is maintained on the leak detection pipes. Each six-inch HDPE collection pipc at the margin of the leach pads is joined to the non-perforated end of the leak detection pipe by a polyehtylene snap adapter. The other end of the non-perforated leak detection pipe is joined by a pipe to its perforated equivalent that rests on thc leak detection layer.

Leach Pad Liners

The secondary earth liner will be placed on top of the lea& detection system. This will be a fine-grained clay soil borrowed from &e property near the leach pads. It will be spread in layers that when compacted will be approximately 6 inches thid conditioned with water and compacted to 95Voof $e 6315fuarrmdry density as determined under ASTM-D698 (see Appendix E). Two layers will be placed for a total compacted thiclness of 1 foot. The permeability of this compacted soil liner is expected to be 1.0 x 10-7 cm/sec whicb combined with the design thickness, will assure that any EeePagethtough the primary platic liner will be essentially stopped by the secondary liner. This liner will be erended to the perimeter berms as shown on Figures 3.4-3.

67 REVTSED9-29-89 o

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a-i- -=g:>tti :ir;;"b"-', toee pt'zre 7^4 ca^. coL?T,c; FaAt^.,rAY -E/ ?a(6net 4,b1 N TrAN;ul4.E|JT ./ lFl oN - P eF ;oxiter-vale _,/ r- >\_\.-- !a-!!1o.:.?.?c tti:: ;::: _t.t) o4^ ifiiltii;1;:J /, ;'.U.,LiE pr.areCe7?-oi4, Ao9e.aluft .7- l, , , UiO I I I :t v*-4/ .Ja?3 caA"j e.ea LJ \ rJdE O-a a.az t3. a!c3r3. L"2 Bt (*o'u" ctJt ovto;4 t. t+ dt efn a-elE .-c a elala? a?e ao ?L1ren c?2-a4 ?it/l, l'a nnuo\ .( fLrrl- Lararl 6o e t Ltt. c,s.. ?-o?-Zol F ?E +rffrr'4,'' 1o be AfuAY*9 ,i{'3)d. ho.9 btlz 1o .'-o e a^ceto t91Yt. \'i Qrat lrr / NETAIL/.1-\ Ta€lat a t !+e,'J*tZa t4. cZ- -lt1.4,.-E-/ foe'il?t/)v LfTbt@ g,t{J.. ".?-f4 gt4u-1to/ trtq,'4lloi \---^I',. ?o.fTt, 6 -.-z o BP }iINERALS ATIERICA PAD AAR'|EYS CAIi]TOAI FFIO'ECT LEAC}I 8C.I adl-Coda t,ti LEAK DETECTIONPIPING Mine & Mill Engineering, lnc- PLAN A SECTIONS & GPDA s;,ttuke city 7-1.12-2lrl The clay for the secondary liner will be recovered from borrow pits on the Baroeys Canyon Property. Three borrow souroes have been identified thus far and their locations are shown on Plate III. Further pit development will depend on the resources available at each of the existr4g sites. Clay pits 1 and 2 have been partially developed. The esent of current development and esrirnated ultimals pit size is shorm on Plate Itr. Pits will be expanded or developed as demand for liner materials arise.

The primary liner will immsdhlely be placed on top of the earth secondary liner. The primary liner will be 60 mil HDPE installed according to the manufacturer's recomnendations (see Appendix F for full specification). This material will cover all interior areas of the pads, as shown of Figures 3.42and3.{3.

Solution Collection

The final step in pad construction will be the installation of the crushed ore blanket, or overliner, on top of the primary liner. Solution collection piping will be installed on each cell prior to covering the liner with overliner. The piprag will consist of a tbree-inch-diameter comrgated" perforated polyethylene pipe spaced at zl&foot centers (Figure 3.+2). These pipes will connect to an eight-inch-dianeter polyethylene collection main which will run downslope to the discharge end of each cell. The blanket will be minus 3/4_inch cnrshed ore, produced at the plant crushing facility, which will be trucked or conveyed to the pad and spread to a thickness of approximately 3 feet. The overliner will function as a protective cushion separaring the primary plastic liner from the overlying ore. The crushed and agglsmssatedore will then be stacked on top of the cushion.

3.42 Solution Conveyanes

Lcach solutions drainiqg from the bottoms of the heaps will llow in pipes in the solution collection tre'nches along the margins of the pads to the low points of each cell where the solutions will be routed into HDPE pregnant solution pipes. The pregmnt and barren solution pipes will have secondary 5pn[ainmsal a lined ditch which flows toward the process solution ponds. pregnant solutions entering the ponds will be routed through measuringflumes that will record the flow rates.

The collection trenches will be HDPE lined ditches from the pads to the solution ponds to collEct any leaks of solutions from the pipes, as shown on Figure 3.zt-4. These collection trenches will be separated from the general site drainage by their lateral berms and will be carried under all

70 REVISED 9.29-89 road crossings with culverts. Thc layout of the trenches will provide suitable grade (LVo rninimum) so that any leakage will be conveyed in the trenc,hesback to the process solution ponds (Figure 3.+ 4).

The barren solution piping s'sten on the heaps will co'sist of a l2-inch HDPE pressure main on each cell' a network of six-inch PVC branch lines, and a network of three-inch spray PVC lines spaced at 4&foot intenals. InitiallX the sprinklers will 6s igsnninger-Wobblers" spray heads. The $snninger-Wobbler sprinkler is highly resistant to corrosion which reduces the risk of plugging or stalliry. Since it has a single moving part, the Wobbler also resistswear.

The spray heads operate between 15 aad 25 ponds per square inch and provide a solution appilcation rate of .0025 to .gg+ gallons per minuts per square foot of pad area. yelomine SDR-21 PVC is enployed rrring spline connections. The piping s),stemwill be inspected daily by the leaching crew. The Wobblers require occasional un-blocki"g of orifices. The leaching crew will survey the spray pattern and note non-performing sprinklers. After shutting docm the fsgdlineE the sprinkler will be unplugged or replaced. The sprinkler system will be restarted after maintenance is completed.

Solution punping will be accomplished with submersrble-type pumps in the solution ponds. Outside of the solution pro@ss building pumped solution pipes will be equipped with pressure sensors which will irnrnsdhtgty and automatically shut down the pump should there be a break in the pipeline.

3.43 SohrrionPords

The process solution ponds are HDPE-lined bacin( located at the lowest point in the process area (Figure 3.41). The ponds will have a total capacity sufEcient to contain the following volumes:

1) The working inventory of lEach solution. This is the combined vol,rr'e of solutions in the pregnant and barren ponds. Normal volume will be 150,000gallons in each pond (300,000 gallons total).

2) The drainage of leach solution from the connected heaps during a Z hour shutdown of the leach pr'-ping system. The calculation assumesa 2Lhour draindown volurne enters the

77 REVISED 9-29-89 ponds at the prevailing barren solution pumpng rate to the heaps. For cxample, at a pumpiry rate of 2000gpm, the calculated vol,mc would be 2"880,000gallons. 3) The volume of runoff from the exposed,lined pad and trench areas that occurs during the lCI-n 24-hour precipitation event. Thrs is based upon 3.5 inches of rain. This runoff will be a variable and will equal 218,200gallons for each 100,000square feet of bare plastic. . 4) The runoff from the leach pads. Due to the water storage capacrty of the heaps, it is 655rrrns4lthat runoff will occur only from areas under active leach. Runoff from the 100- year storm Q W inches sf irin) would providc 218,2N gallons for each 100,000 square feet under active leach.

t The direct precipitation on the ponds during the 100-yr 2A-hour precipitation event. This will equal 283,600 gallons based on 35 inches of rain falling on the 13),000 square foot pond area.

6) A freeboard value of at least 2 feet abovethe level for volumes 1) througb 5) above.

The combined capacity of the barren and pregnant solution ponds is available for the draindown and inflsws. 51636 The total capacity of the processsolution ponds is 10,285p00gallons.

The ponds will -have3h:1v sideslopes and bottoms that are sloped to one low corner (Figure 3.a- 6 and' 3'47). The bottoms of thc ponds will have a rectangular configuration and will be inclined at 2'0Vo, then graded to one oorner where the pond leak detection collection sump will be placed (Figure 3.+7).

Ponds will first be excavated to approximate final grade. TWelve inches of secondary liner material material will then bc applied in nro 6inch compacted lifts (Figure 3.+6). The permeability, material t1pe, and placement techniques for this liner material will be identical to those described for the leach pads in Section 3.4.1. A geote*ile followed by a drainage g:ld material will then be placed on the secondary liner (Figure 3.+6). The primary liner of 60 Ddl HDPE will then be placed on top of &e drainage grid and anchored in trenches along the margin of the ponds (Figure 3.+6).

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?-\, t r< D-- SU Arl*< S< The function of tbe drainage grd wilt be to capture any leeks 931 rrighl occur through ghs prinary liner and allow leakage to be drained to the low point of the pond bottom for removal. fhe bw point of the tcak detection s),stem will be equipped with a snall sump to collect the pight-inch socpage. rlinmetff standpipes will be used to monitor the leak detection sumps for leakage (Fgure 3.+6). A probe inserted in the standpipe will detect any solution accumulated in the leak detection sump. If confirmed that the solution is leakage from the ponds, the BWPC will be notified as required in their construction permit.

35 lJach Solution Processing

Leach solutions will be processed in the process building. The buildingis location is shoum on Plate Itr. I-cach solution processing is depicted on the flow sheets shorvn on Figures 35-1 and 3-5- 2).

35.1 CarbmAdsorption

Tbe carbon adsorption process is depicted on Figure 35-1. The leach solution from the pregDant solution ponds will be pumped to carbon columns, each filled with granulated" activated carbon, and locatcd in the process building. The gold-ganide complex will be adsorbed on the carbon as the prepant solution passesthrough the columns. The solution coning from the carbon sslrrmns is the barren solution and will be refortified with solutions of NaOH and NaCN and recycled to the barren solution pond. The barren solution will then be pumped back to the heaps to complete the leach cycle. Fresh water as needed will be added to the barren ponds to make up for evaporativelosses from the leach heap and the leach solution ponds.

When the gold content of the carbon is suf6cient for stripping the loaded carbon will go to the carbon processing plant. The carbon will be pumped to an acid wash tank whcre the loaded carbon will be treated with a 57o solution of hydrochtoric acid (HCl) to remove any minsla[ scalt build-up Ftgute 3.5-2). Acid soluble metals will also be washed from the carbon i1 this s1sp. The acid wash solution will be neutralized in the acid wash tank by reaction with the natural carbonate minslxl5 on the carbon The metals that were dissolved from the carbon will therefore be precipitated as hydroxide sludges within &s tnnk. This dilute sludge will be rinsed from the carbon, passed over a fine carbon screen, and pumped to the chemical waste sump. Fron the chemical waste sump, the sludge will be pr'-ped to the active barren pond where the sludge will bo mixed and pumped to the heap. If the acid is not adequatelyneutralized in the acid wash tank, washedcarbon

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to, :EigiEB"*lY E Y pd sEii :3 :E :5 ti .F .;* .tr 'ssE-8 I 'r tEitiiiil,l :h :r5 Itig : l5E'Bd =EtEilii' ...L. r'di',ilI ' \! I !I ti;uE 3!t:3: x! o sl ll JI i E o EE $l o1 EiIAEE pI ; TiEiT aol ,p I lr5 Erlpp I;] !l!ititi FI eia E !frfr r D- s IgB o (o o 5 tTil o 136 frut8 o I- 5 'HE I '8. :EF f, iB ...... -t () '!ll" r I [- r,E'i,.IEE 1rr....i iH*!--.-l E EI t? 'ii ffili"B Fi t? gF int rla ca:F s* 9!::l 3 t : :pppp

Eg-l. 9a ffi4'B FN B iE!EE duinl liE t?l l?l rrHll B r3 *g*;:: B B Bqniniii i:' q IgE in the tank will be treated with a NaoH solution to elevate the pH prior to pumping the washed carbon to the carbon strip tanks.

352 Carbon Strbping

The washed carbon will be stripped of its gold with a solution of.lVo NaOH plus 0.12o NaCN at atmospheric pressnre and a temperature of 190h. The stripping will be conducted in 2 banks of 2 closed, strip tanks, each bank connected in closed circuit with a strip solution tan\ strip solution heater and electrowinning cell Figure 3.5-2. Approximately 40 GPM of strip solution will be circulated for 72 hours to strip each batch of carbon.

3-53EteCrwinning

Gold will be precipitated from the heated strip solutions onto steel wool cathodes in a procass called electrowindng (Ftgute 3S-Z).

35.4 CarbonRqencratim

Stripped carbon will be pumped from the carbon strip tenks back to the carbon gslurnns (F gute 3S-2), Continued reuse of the carbon results in a degradation of its adsorption quality so the carbon will be occasionally reactivated (F gure 35-3). The carbon will first be washed with water to remove any cyanide and then reactivated in a 1,500,00GBTUIHR, propane-fired kjlo by heating to a temPerature of 1200oF in an oxygen deficient atmosphere. The reactivated carbon will then be quenchedi161ank of water and pumpedbac& to the carbonadsorption sslrrmns.

355 GoldRefining

The gold refining Process is depicted on Figure 3.5-3. Cathodes, consisting of steel wool with plated gold, will be removed from the electrowinning cclls about every third day. After being air dried, the cathodes will be placed in an electrically heated mercury retort to drive off any contained mercury' The mercury fumes will be drawn off by a vacuum pump into a condenser where the aercury will be collected for sale. The nacu,- pump will exhaust to the outside and will not have mercury c'arry-over. The cathodes will then be mixed with soda as\ silica and borax flux and melted in an electric induction furnace to form a gold dore.

78 REVISED 9-29-89 I ! f;r ! pl *t$l'ryi ,,

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8B=r 1T 1TT 11 1t d E ! i-E ffig J I E Igf; EE r! -l lgH;i!: iB e6 t 'Effiu KltE! i- *i' BI .ll 'ii .s-|[*Ei o 6 F C 'gql E :t t i m z E[ I 6 C! t B]tr ?J| I (t 3.6 ArcillaryFacilities

Aocillary or support facilities for the Barneys Canyon Project will consirt of an analytical laboratory, a truck shop and warehouse, erplosives storage, fuel storage facilities, parking areas, and 3i lrlminisf;ation building. The locations of most of these facilities are shown on Plate III. The total laboratory facility will include a sample preparation room with drying and cnrshing equipment, wet chemistry laboratory fire-assay laboratory, a metallurgical testi.g laboratory and an atomic adsorption analytical room. The truck shop will be used to service and maintain all mining eqrripment. The warehouse will be used for storage of parts and equipment for the shop. The fuel storage facilities will be sited as appropriate for efficient operations. Fuel spill control Eeasures issluding safety berms will be installed at each fuel storage site. A Spill prevention Control and CountermeasuresPlan (SPCC) has been prepared and implemented as required by Federal law. The administlstiea luilding will house offrces for managementpersonnel. Parking lots for employeeswill be located at the xdminis6sfiea [uilding. Parking for company-ownedeqrripment and man-carrying rahicles will be provided adjacent to the truck shop, processluilrling 6sd sdninistration building.

3.7 WasteDftpcal

Waste materials generated by the activities at the Barneys Canyon Project will consist of mine waste rock, spent ore on the leach pads, and trash. Mine waste rock will be disposed in the waste dumps, as described in Section 3.2. Spent ore will be reclaimed in place. Trash will be hauled to a nearby, permitted municipal laDdfill. Waste solutions from the labs and process buildings will be handled in the processs)4stem in accordancewith BWPC permits.

3.8 ProductionscLeduls

Waste rock removal began in the Barneys Canyon pit in the first quarter of 1989 and in the Mel-Co pit in late 1989. Nearly J milliea tons of ore and waste will fs minsd from Barnep Canyon in 1989 rnilliql and about QJ tons of waste will be pre-stripped frorn Mel-Co in 1989. Barneys canyon and Mel-co pits will be mined concurrently in 19g9 and 1990, by which rime ths fust phase of Mel-Co minsd will be 6ut. Barneys Canyon operations will continue, exclusively through 1991, l9{2, and 7ryB. Beginning in 1994, pre-stripping for the second phase of the Mel-Co pit will oourmerce and Barneys Canyon and Mel-Co pits will !e minsd concurrently thtough 1994, 1995, and 1996.

80 REVISED 9-29.89 The Barneys Canyon ming will operate two 12-hour shifts per day,7 days per wee\ 52 weeks per year. Because of limitations imposed by severe weather conditions, Mel-Co operations may be curtailed during the worst winter montbs; however, if conditions pernit, mining will proceed Z hours per day and 52 weeks per yqr. tfte 665hing plant and pro@ss plant are scheduled to operate Z hours per day and up to 365 days per year. The laboratory and tnrck shop will be operatedyear-round in support ofboth ths mining and processoperations.

39 TopsoilUanagenent

Available topsoil naterials at the Barneys Canyon mining site will be stripped with dozers and scrapers placed in storage piles on sites protected from excessivesurface runoff. Plannecl topsoil stockpile sites are shown on Plate III. The topsoil portion of &e soil profile, gsnsisting, on average' of the upper 12 inches, will be salvaged. In areas underlain by Copperton soils no more than ftg upper 12 inches of topsoil will be salvaged. The Soil Conservation Servicc has determined that these soils are less thap ideal for use as topsoil. Facility sites having Copperton soils include all the leach pads, the solution pon&, process building; substation, lclminisftnties building, srushing and screening are4 the eastern 3.8 acres of the shop building area, and the eastern L6 aqe,sof the ore stockpile area. All other facilities are covered with Harkers-Dry Creek associatioq Dry Creek- Copperton association or Bradwhaw-Agassizassociation soils which the SCS recognizes as suitable for use as topsoil. For these soil tlpes, borrow deptbs may exceed 12 inches to meet topsoil yslrrms needs,if necessary.

Recoverable soil vol'-es for eac.h@mponent of the project are s'mmarized in Table 3.9-1. In the event that areas currently identified for topsoil salvage are found during reoovery operations to lack the 12 inches of topsoil ne@ssary, the balance of the soil necessary to carry out the topsoil redistribution plan desoibed in Section 5.4 will !s meinlained by borrowing additional soils from other areashaving greater tha! 12 inches ofsoil.

In the Mel-Co atea, total available toposoil e:rceeds the anticipated topsoil demand for recl'-ation by approximately 28,000 cubic yards, as described in Table 3.9-1 and section 5.4. Becaue of the steep terrain and resultant difEculties in removing andl trenRporing the materia! only a sufficient volumE of toposoil to accomplish the plar,r,ed reclamation worh will be recovered and stockpiled from the pit and dunp sites.

81 REVISED 9-29-89 The topsoil recovery plan wil include nixing the e:risti.g vegetation into the soils which will provide additional organic matter to the salvaged soils. The topsoil storage piles will be protected from wind erosion and slope drainage by seeding with 6 lbs per acre of annual rye to protect the surface with a quick growing vegetative cover. In additio4 Kennecott will apply the permanent reclamation seed mix to those topsoil stockpiles or parts of topsoil stockpiles which will not receive future contributions of topsoil. Stockpile surfaces that will receive additional topsoil as part of ongoing mins gxpanslonwill be vegetatedwith the interim seedmir

82 REVISED 9-29-89 Table 3.9-1 Topsoil Yields Average Salvage Salvageable Vohrme Site Soil TVoes Depth ,Acreaee (Cu. Yds.)

canyonPit Harker-Dry Creek 11 523 u3n "T": Rocky Variant 0n 4.1 0

Barneys Canyon Dumps Harker-Dry Creek t2n 125.6 ?n46F.s

Mel-Co Pit Bradshaw-Agassis IT 35.2 56,789(1)

Mel-Co Dumps Bradsha*Agassis L2' 42.4 68,,105(1)

Admin. Bldg., Process/Lab& Solution Ponds, GraveVClay Pits1& 2 Dry Crcc&€opperton LT 24.7 39,U9

ClayPits2&Alternate Harkcr-DryCreek t7 2.0 3,m

PotableWater Storage, Ore Stockpile Harker-DryCreek 6.9 Ll,l32

East Portion Crushing/Screening and Shop Harker-DryCreek r0.7 17,?63

West Portion Crushing/Sg1'ssning and Shop Dry Creek-Copperton 12n g.g 14,197

I*ach PadsBC-1,2,3; M-l,2; Future l-each Pad and North & South Portions of BC-4 Dry Creek-Copperton l2n 215.6 y7,835 f,s6aining Portion of l*ach PadBC-4 Copperton LT 725 m,167

Substation Dry Creek-Copperton 72' 0.4 g5

Total 54L.2 866,521(1)

(1) Actual topsoil borrowed in the Met-Co area is estimated to be 97,353 cubic yards; therefore, a total of 100,000 cubic yards of material, sufficient to cover the surfaces to be topsoiled,-as described in Section 5.4, will be recovered and stockpiled.

83 REVISED 9.N-89 3.10 OrerbudcnDispoal

Salvaged topsoil will be stockpiled and managed in the manner described above in Section 3.9.

All other overburdenwill be hauledto the mine ch,mpsshown on plate trI and dumped.

The dumps will be constructed with top surfaces sloprng gently back toward the natural hitlsidss

for the purpose of drainage control. Dudng rnining, the dump outslopeswill have a slope nngls 6f

approximately 37 degrees. The waste will be spd-drrmped from the haul trucks and dozers will be

used to push the waste over the dump outslopes as Decessary. The geologl of the overburdEn is described in Section 2.1. The chemical characteristics of the orrerburden material regardi'g the

potential for toxicity, are discussedbelow in Section 3.11.

Dump slope stability analyseshave been performed by Sergent, Hauskins & Bechpith for the the large Mel-Cs drrmp and the Barnep Canyon 6300 and 6JQQrnine dumps. Analpes were performed in those parts of the planned dumps where the most critical natural slope conditions were encountered. The plarrngd drrmP configurations for this project, includi'g placement of the dump material at the angle of rePose (37 dogrees) were used in the calculations. Stability analpes performed for the proposed dumps resulted in the following r:rngesof factors of safety (F.S.) under static conditions:

Barnep Canyon Dumps F.S. : 1.05to 133

Mel-Co dump F.S.= 1.1to1.4

A safety factor of 1.0 or nore indicates that a slope is stable; therefore, the Barneys Canyon and

Mel-Co dumps are predicted to be stable.

Sergent Hauskins and Beckwith also conducted dynamic stability analyses for the clt,-ps. These calculations indicate that "...permanent defornations under horizontal accelerations of .2 to 3 g for

84 REVTSED9-29-89 the critical failure zones would be less than 2 feet."(Sergent Hsrrskins and Beckwith, 1983) Further details can be found in &s drrmp stability analpis report which has been separatelysubmitted.

3.11 Evaluation of lvlafcrials Tuicity

In order to respond to the Division's rule regarding identification 6a61 [gndling of toxic materials, analysesof waste rod ore, and leached ore were performed lsing ono or more analytical techniques that are accepted means of determining toxicity of waste materials that are either naturally occurring or have been disposed in the natural environment. Waste rock was analped for total content of seleded metals, weak-acid-soluble metals @P toxicity test), and acid-base potential. Raw ore was analped for total metals. Spent leach material Qeached ore) was analyzndfor total metals and EP toxic metals.

85 REVISED 9.29-89 This pageis intentionallylsft Uank.

REVISED9.29-89 Thc EP toxicity tcst involvcs a 2d-hour leach of solid matcrial in a solution of acctic acid with

a pH of 55. Thc ratio of lcachate to sample is 20:1. The EP toxicity rcst was designed to simulate

rcatly acid conditions that can cxist in landfiX envirouments, and under which mrny tDetsls may bc

dissoh'ed aad mobilizcd Thc EP toxicity tcsr was sclcacd bccaue it is aa acccptcd US. EpA

tldytical protocol and is a worst c'

will rcsult in thc disposal at tbe rning duap of a small aDrount of pyritic wastc rock in comparison

to tbc total wastc volune. It is important to point out thx1 mining wastes arc curreutty cxemptcd

by Fcderal ald Statc law from rcgulatioa undcr tbc laws and rcgulations that established thc Ep

toxicity tcsts and for which EP toxicity o'aj),ses have rcgulatory impact.

Thc acid-base potential test was dcveloped for craluation of coal mine wastcs. Each sanple is

aaalpcd for acid-gcasr3ting potential aad neutralization potcutial. Acid-geacrating potential is

based oa the total sutfur coatcut of the sample. Ncu6alizalien potcntial is bascd priacipally upon

the carbonate content of tbc sampte; howcvcr, tbe affcct of tbe ioo-cxchange capacity of clap are

also t"kcn into account. Thc rcsults of acid-gcncpring and neutralization tests arc catculated in

tons of Ca@g per 1000 tons of material. In the case of acid potenti4 thc result is e,:rpresscdas a

ucgative number cquivalcnt to thc toDs of CaCO3 required to Ecutralize the amount of acid

gencrated. Neugrli'ation poteutial is exprcsscd as tbe tons of CaCO3-cquivalcnt matcrial pcr 1000

tons of waste. The results of cach separate test are thcn added together. A positivc rcsult

indicates that the samplc i5 ssu6ali'ing, a acgativc aumber indicatcs that it is potcntialty acid

Eencrating. This rcsult is rscd to dcterminc the amouil ef sgutreli#ng material (soil or overburdeu

with neutraliri"g potentiat or additivcs like agricultural line) Dcccssaryto neutralizc acid-generari',g

waste.

o gl REVTSED?-20-88 Acid basc potcutial analpcs for one Barncp Canyon rcprcscntatiw waste rock compositc sanple

and nro Mcl-C-o rcPrcscDtatirc compositewaste rock samplesyiclded the fotlowing rcsults:

Samole lEt Acid-BascPotential Baraep Canyon(BC-85, 8.9 +556 T/10007 compositc)

Mcl-Co (MC-25,f, to 8.6 4Tl10007 255'compositc)

Mcl-Co(MC-25,3?5' 63 .f T/10007 to 570'composite)

Thc full laboratoryrcPort is arailablein Appcndix C-Itr. Thc anatyticallaboratory has determincd

that the Mcl-Co saoplcs are ooly slightly acid-forning aad thcrcforc aon-toxic. Tbis is due to the

rclativcly low pyrite coateut of the orc and wastesamplcs. Thc samplcsselcctcd for analysisrrcre

from &ill holes coatainingbotb oxide and snlfidc oatcriats and wcre sclcctcd as rcprcscntativcof zonesof mixed ore and wastc that wiU bc eacountcrcddrrring mining of tbc orc body.Most of thc ore body 6ssfainconly oxide orc and waste. The cstimatedtotal quantity of sulfide-bearingore and waste in tbe Mcl'Co pit is 65,000 tons; the snlfids orc fractioo is estimatcd at approximatcly

300,000tons. Total wastcfor Mcl-Co is 14,000,000toas; thcrcfore, tle total sulfide-bcaringmaterial comprisesonly 45 Perccntof the 1e1strrring wastc to be rcmowd from the Mel-Co pit. The mine dumpswi[' thc!' contair a like proportioa of s,rrlfidgwaste. Therefore,tbc dumpswill not gcncrate acid solutioDsas a rcsult of pcrcolaringrain watcr. The abscuccof low pH watersin the duops will grcatly rcducc the potentialfor rlisolution and melilizalisa of most potcntienytoxic metals, sinccthese metals arc solublcat low pH's.

Thc only signifigaa1 srrlfidg mineral prcsent in the ore and waste at Barnep Canyou is pyrire.

88 REVISED7-20-88 Pyrite in qrranliligs 5rrffisigs1to gercrate sipificaar acid will be rcadily ideatifiabte by visual

DcaDs' In additioA as patt of gold assayingfel rning ore gradc coutro! 1f,e rnin6 aralyticat laboratory will dctcrmine aot oaly gold contentbut also cficther or lot the orc aad adjaccatrods arc sulfide beatilg or oxidized. Tbc laboratoryaaalpis wiu bc pcrforocd on dccly spaccdbtast holcs' rning ff,s gcotogist or othcr pcrson rcsponsiblefor orc gradc coatrot in thc pit will bc responsiblc for dclincatingaad marking tbc pyritic wasterock in thc pit througbourthe life of tbe niae. Dudlg ovcrburdenremora! ppite-bcariry wastewill bc identificd botb from the blast hole

alalyttcal rcsuls aad by visual mcals, martcedwith 0ags and loadcd in separatetrucls for hautagc

to the wastc dump cfierc it wi[ bc dumped such that aoa-sulfiticwastc cal hter corer it. If Dcccssary at thc cnd of iaslath6ss of a dump, nou-sul6ticwastc rcck wi[ bc stoctpilcd oa the top

of the dump for usc as 6nal cover material for sulfidc-bearingroc,k. Thc thicknesso; sss-snr6dc.

bcaringwaste rock coracrwill bc ao lessrhan t\ps fssl to The Mcl-Co ore body s6arain

thc ore body. The reviscdrnining plan for the Mel-Co deposithas rcsultedin a larger pit tha', had

originally bceu coutcnplatcd. As a result, a discretcsulfidc zoue at the baseof tbe orc body and

acar tbe pit bonom wiU bc rcnovcd. Thc sulfide-bcaringwaste in the uppcr portioos of thc pit *ill' by virtuc of ia irrcgutarity, be nixcd with non-sutfiticwaste duriDg ovcrburdcn rcmoral aad

d-pto$ &erefore, Do conceDtratioosof sulfide wastewill be depositedin thc druep from thesc

zoles. The sulfidc-bcarit€rock at the bascof the orc body,though sesleining gold rnineratiuatien,

docs not lcnd itsclf to bcap t6ching and will not be rnins4twith tbc oxide orc. It is cnrrcntly

trGnnecott'sintcation ts ming the ore fraction of rhi< materialand haul it to its Magna smelter

rvtcrc, bccauseof its high silica contcnt, it wiU be rscd as flu and the sentrins4tgold will bc

recowred. The uscftrloessof rhiq sulfids ore as a 0ux caDnotbe dctcrnincd rrntil gs rnining

89 REVISED 7-2&88 oPcrationscryosc the matcrial. If this matcrial carnot bc uscd as sneltcr llu:g current plans call

for it to be disposcdin thc .ios drnnpsalong with tbe sulfidc-bcaringwastc rock This material

wiu be duped suchtbat it is covcrcdby aadmixcd with oxidewaste.

lbc rcsuls of the total mctalsaad EP toxic mctalsaaalpx for orc and wasteare prcscntcdin

Tablcs3.11-1 and 3.L1-\ rcspectivcly.

Total metal conteatsof variors orc and wastcsamplcs arc clewcd aboveaormal backgroundas

thc rcsult of aatual bydrotbcrmalproc*scs that formedthe gold ore bodies.

The resultsof &e EP toxicity aaalyseson unlcachedand le,achedorc are comparedto US. EPA

limi6 fs1 EP toxic mctals in Table 3.11-1. As this table demonstrates,DoDe of the saraplcscxcced

or cvc! approacht[s li'nits for EP toxicitysct by the EPA. Hcacc,ore stockpilesaad spentlcach

f"Ufe 3.11'1 Rcsults of Total Mctals and EP Toxicity I AnalysesFor Baraep Canpa Project Orc Samples(iappn)

SanplcTlpe and

Dcsiqpation As Sb Ba @ Cd Cr Ctr Ib. He Ni _S9.ls, _&. n A UntrcatcdOre (Iotal)

Baracp

. (BGal) 4300 <10 860 <05 4 33 45 % 1.0 A 16 fl 9 90 103 Mel-Co

o{c-36) 3800 <10 3120 <05 t L2 37 10 1.7 4 57 180

Mcl-Co

fMc-38) aq <10 2550 <05 1 11 tE t5 u.4L 7g 3g_s. -s- Mcan Dn <10 2180 <05 2 1939m L2n10l:} 3{t rm 58

90 REVISED7-20.88 Tabls 3'11-1 Rcsults of Total Mctats aad EP Toxicity Analpes For Barncp caayon project ore Sanples(inppn) (Coatinucd)

SampleTlpe and

Dcsinoation As Sb Ba & Cd Cr Or !L He _l$. Se Aq _I9. Jt Zn Irrchcd Ore (fotal)

Baracys (Bc-[}1) uno 2 LAm <02 2 35 52 56 NA 29 0.9 r.4 r.1 80 165 Mcl-Co

0{ca6) 3900 10 3500 <02 <05 16 U n NA 14 23 03 5.6190 A EaracyV

Mel-Co

C-omoosite 50 2 os _q?._L . 5{. tZ 50. NA 28 gg. !t gg.?0. !58 Mean 1250 5 t670 35 41 $ U 13 1.0 2j u5 tt7 I-cacled Orc (EP Toxicity) Desienation As -& g{ SL Pb Hs Ac I -Ss. Ba-elr (Bc-a1) 0.t:} <.01 <.01 <.01 <.01 Mcl-Co

(l"tC-36) 0.01:} <.01 <.005 <.005 .0@ <.m4 <.01 BarneyV

Mel-Co

Comoosite 0.m4 2-4 J3. -!9. <.005 .0040 <.004 <.01 Mcan 0.04 13 .m2t EP Toxicity

Iimis (EPA) 1.0 5.0 02 5.0

90.1 REVTSED7-20-88 Table 3'11'2 Rcsults of Total Metals and EP Toxicity Aaalyses for Baraeys Canyon projcct wastc Rock

ga,nplcs(in ppm)

Sanple Tlpc aad

Dcsiaation As Sb Ba & Cd Cr Crr !h Hs _!g. lg As _&. _g _Zg Total Mctals

Barnep

(BC{s) m <10 338 <05 5 80 31 185 05 42 <4 18 <5 60 :f2s Mcl-Co

(l*lC-2S,

t'95) 300 <10 650 <05 t 7 21 ljll 0.4 10 <4 4 <5 10 47 (l"tC-25, 37s') 2e00<10 Eg <0.s J J 2r _gg.gL 33. <4 3 3 J2q $5. Mean to n30 <10 ST3 <0-5 Z 3t U t2g 0.4 ZB <4 g - 60 94 EP Toxicity

Desienation As -&. cd gL lb. is- -Se. As Baraeys

(Bc-8t 0.11 0.4 <.05 <.05 <.05 .0001 0.08 <.05 Mcl-Co

(MC-25

t-95') 0.07 13 <.05 <.05 <.05 .0001 <.05 <.05 (lvlC-25

375') 1.86 0.1 <.05 <.05 <.05 .0023 <.05 <.05

Mcan 0.68 0.6 <05 <05 <05 .m08 <05 <0.5 EP Toxicity

I inrils (EPA) 5.0 100.0 1.0 5.0 5.0 02 1.0 5.0

90.2 REVISED 7-20-88 Eaterials in the heapsarc rrot aaticipated to provide a sourcc of soluble Drctalsto the cnviroDgrent.

Tbc rcsults of EP toxicity analyscson BarneysCanyon and Mel-Co wastcrod aloqg with EpA Ep

todcity limits arc prcscntedia Table 3.11-2. As in the caseof thc orc sanples,thc rcsults of tbese

tlsllscs indicate Do gn'ntitics of solublc metals iu cxccssof tbc EPA statdards for thc EP toxicity

proedurc. In additioD,sincc, as tbc acid-basepoteutial analpcs indicate, tbe waste rock dumps will

Dot substsltidly lower the pH of water pcrcolatingthrougb thcn, the pH 55 conditionssinnlatcd in thc

EP todcity tcst shouldnot be approached8t the sitc. Ttcrcforc, evcn the lcrc,lsof metalsrcportcd out

of tbe EP toxicitytcsts Eay lot be reachedin watcrspercolaring throryb gg rninsdpnps.

I'o

I 'o 90.3 REVTSED7-20-88 3J2 Runofi and Sedimcnt Control

3 lt 1 R1ngffVotumes Fcrirrreres

Runoff volumes and peak flows in and around the project area wEre calculated usi"g the Soil Conservation Service (SCS) Curve frf'mles technigue, utilizing a conputer program developed by Hawkins aad Marshall (1980). Precipitation depths for the 10-year, 2S-year and 100-year, 2ahour rainfall events were used in the calculations to determine the nrnoff peals and volumes for each evenl The precipitation depths were obtained from the National Oceanic and Atmospheric Administration Precipitation Frequency Atlas for Utah (LgR). The precipitation depths for these events were found to be 2.7 inches, 3.0 inchcs, and 3.7 incheg respectively. Runoff pcaks were generated usi4g the SCS$pe II rainfall distribution which is gpical for the westerDUnited States.

The curve numbers used in these calculations were based on local soil hydrologic characteristics and vegetation tlpes. Soils were grouped according to infiltration c,haracteristics,hydrologic soil group A highest having &s infiltration rates and group D having the lowest infiltration rates. Thcre main are two f,ydlstogic soil groups in the project area. Soils of group C are found largely in the valley alluvium and colluvium beneath tbe Barnep Canyon project area. Soils of hydrologic group B predominantly are found in the higher elevations. The vegetation gpes are largely sage/grass co--unig in the lower elevations and gambel oaks on the low elevation north faorg slopes and in tls highel elevations. Based on this and other information e[tainsd over one year of work at the site, the base curve numbers bave been revised to better re0ect actual runoff conditions at the project site.

Vegetation tlpe Soil GroupB Soil Group C Sagebrush(fair) CN=48 CN=65 Oak/Aspen (fair) CN=47 CN=64 Source: Van Havern, 1986 since each watershed tiss within a predominant soil t1pe, the curve numbers were weighted accordiqg to the a.Eount of area containing oak forest and sagebrush in each drainage basin. A curve number g9 of was used for calculating runoff yslrrmss and peaks fron the compacted waste dumps surfaces. high A curve number was intentionally selected to provide a conserrrativessrimxte of runoff from waste dumps; the actual nrnoff would be cxpected to be less than that predicted. The assumptionsused in these calcurationsmay be found in Table 3.12-1belo$,.

9r REVISED 9.D.89 Table 3.12-1 Curve Numbers for BarneysCanyou Drainage lasins

Drainage WS Curve Soil Vegetation RunoffDepth (in) Basin ID Area Number nnre 7o oak d saee 10yr afyr 100yr M (inpdnt) 565 65 c45 5s 038 051 0.86 N 118.0 ,18 Bq ffi 0.03 0.06 0.18 o 452 ,18 Blm 00 0.(B 0.06 0.18 P 33L0 65 c30 70 038 051 0.86 o 96.0 65 C ,10 60 038 051 0.86 R 462.0 65 c25 75 038 051 0.86 s 580.0 65 c45 55 038 051 0.86 T 37.8 65 c00 100 038 051 0.86 Baruep Canyon 4130 ,18 B75 E 0.(B 0.06 0.18 Upper Mel-Co 18.9 65 c00 100 038 051 0.86 Iower Mel-Co 10.4 65 100 038 051 036

The drainage basins and watershed areas used in the runoff peak and volume calculations are outlined plate on V. Calculations were made 's,i'g the undisnrbed watershed areas so that all design" would be consenrativeonce the facilities are built. All operational culvert and ditches bave been designed [6 [rancfsl runoff from the 10-year, 2ahour runoff event. The largest watershed to be disturbed by the operation is Barneys Canyon with an area of 1430 acres. The Barneys Canyon drainage will remain targely unaffestsd by the operations with the exception of the Mel-Co pit access&aul road crossing. Four drainages will be sipificantly disturbed by the rnining operations. The Barneys Canyon pit, adjacent waste dumps, leach pads, and process facilities will occupy large sections of drainages P, Q, s, and T. pleinage area R will remain largely undisturbed by the operations cxcept for a snall area to be occupied by the two northeastern-most leach pads. The Mel-Co pit and waste dumps will occupy a large portion of the right fork drainage of Dry Creek.

3J22 Operational Runotr Control

The operational runoff control plan" depicted on Plate m, has been designed to take advantage of the existing impoun'lment capacity created by the B&G railroad grade fill structures. The B&G railroad grade nrns along the eastern perimeter of the project site. The fill structures through drainage crossings will impound all runoff &om the upland drainage basins ia4lu.ring Barneys Creek

y2 REVISED 9.29.89 (Plate III). Approximately 60 years ago when the railroad was constructd culverts were placed in the stream channel at thE bottom of the railroad 6ll to allow runoff water to 0ow through this s6lanlrmslt. Since that ti-e, these culwrts haw become partially or completely 6lled with scdiments rendering them ineffective and carsing ths qaganlcment to act as an impounding structure. In 1985, eacb impoundment was 6tted with a spillway culvert approximately !5 feet bclow the grade elevation in each drainage to permit impounded water to drain through the impoundm:nt without the likelihood of overflow. The spillway culverts were designed to pass the SGyear flood event or larger and were placed high enough in the sp[ankrngsts to provide significant storege capacities below the spillways. All spillway culverts arc A inches or greater in diameter to meet rninimal design criteria by the Utah State Fngineu. These spillway culverts are in place and the calculated capacity of each impoundment is based on the invert elevation of the these spillway culverts. Water is not routinely impounded behind these structures. A diagram illustrating the placement of these culverts may be found in Appendix D-I. The stage/capacitycurves for all impoundmeng located in the project area rnay be found in Appendix D-I. The nrnoff volunes from the watershedsupgradient of these inpoundments were calculated using undisturbed acreages. Usi"g this technique, the nrnoff volumes calculated should be in excess of the actual runoff volumes after all facilities are constructed, because precipitation faling on active leach pads will be directed to the solution ponds and inactive, ore-covered pads will have substantialmoisture retention capacity.

Most haul roads have been designed to allow water runoff from both road surfaces and the upgradient watersheds to Eove along or beneath them with minimal impacts from erosion (Plate m;. the 6ll material from the landbridge haul roads southeast of waste dumps 6400 and 6500 will create three temporary i"'poundments which will latcr be filled with dump materials. Culverts will not be instaled in the road fill matcrials that create these temporary impoundments. The roads wi[ be sloped away from the road fill slope so all precipitation water falling on the road surface wil drain toward roadside ditches. Roadside ditchEs will run the length of the haul roads througb the project area and will be placed along the roadside cut slope to collect all runoff from the watersheds upgradient before the water floun onto the road surface. The roadside ditches will be triangular in shape and x rninirnrrm of 1.75 feet deep. The ditches will have a 2h:1v sideslope from the road surface and th:1v from the cut slope. These ditches will be placed at the sane gradient as the road" Many of the haul roads will be excavated into the bedrock adding stability to these ditches high during nureff events. AII roadside ditches will drain to corrryated metal pipe culverts to transfer the water below the road and into impoundments or natural stream channels below (plate m).

93 REVISED 9-29-89 Comrgated metal pipe culverts will divert runoff water beneath the road at selected 6sssings. These cuhrertshave been desiped to passrunoff from the lo-year, 2A-hour runoff event. The culverts will be placed along the natural channel gradient [s minirni'c erosion. Desigp specifications for &ese culverts may be found in Appendix D-tr.

During operations, all waste drhps wi[ bo constructed so that the dump surface slopes fron the dump crest toward the natural hillside from which it projects to control nrnoff dowa the outslope of the dunp' Safety berms will be placed around the top perimeter of the waste du-ps as needed to prevent runoff ,Ite flow &om 1tr" drrrnp crest dowo the dump face. dpmps will thcn be sloped so that runoff draiDs toward one @rner of the dump for removal to either a drainage shennet or to an impoundment.

Runoff from the snal drainage area upgradient of the Barnep Canyon pit waste rock dumps and from the adjacent waste rock dump surfaces will be diverted fu1e rmpoundment M located upgradient of the lower elevation haul road leading &om the Barneys Canyon pit to the waste dump (plate Itr). Runoff from the undisturbed watershed area upgradient of the haul roads will drain onto the uppermost haul road and will be diverted along a roadside ditch and thtough a culvert for csafainrnsaf in Impoundment M. Runoff &om dump 6500 will also drain through a cu&,ert for collection in Impoundmett M. In addition, runoff from the y6ste drrmp 6400, adjacent to the Barnep Canyon pit, rrnpouadment will drain into M. The 1fi)-year, 2ghour runoff volume from the three waste dumps and the upper watershed witl be 103 acre-feet and will be easily contained sithin the 47 acre-feet capacity of Inpoundment M (Table 3:r.-z). Current Utah DoGM regulations require that the impoundments Bust contain the lGyear, ?*howrunoffvorr,-e.

Before the waste dumps arc builg the haul road to the truck shop will create threc impoundmeuts in the area to later be occupied by the waste dumps. The impoundment to be occupied by dump 6400 will have a capacity in excess of 80 acre-feet and will only receive runoff &om the 15 acre sasin i1 which it occupies. This i'npoundment will not receirre runoff from beyond its perimeter. The other two impoundments, designated D'r-p 6500 A for the nefr impoundment to the north and Dump 6500 B for the north impoundmenf will be used to contain runoff from the watershed above until the waste dumps are completed. These impoundments are not shown on plate IrI' The capacity ef prrmp 6500 Impoundments A and B will contain the full runoff vol,,me from the lfl)-year, 2#hour runoff event from the upland drainagebasins.

94 REVISED 9-29-89 The leach pads will occupy portions of drainage areas P, Q, & and T (Plate m). Due to the closed leachi'g system, any precipitation falling on the active leach pad surfaces will nrn through the pad solution drainage s)Etemsbefore cssfainmss[ in the doumgradient pregnart solution ponds. The leach solution qatems will have the capacity to contain the l0Gyear, 24-hour runoff event &om active pads yslrrrne in addition to the of water psed in the leaching process. The ponds have been desiFed to overflow into one another before discharging thereby creating additional irnpoundnent capacity above the lfl)-year, 24-hour runoff capacity desigD. Any solution pond overflow from the po'ds will be contained behind the B&G grade railroad impoundment.

The retention capacity of each of the railroad grade impoundments was calculated from topqgraphic maps and knocn spillway culvert invert elevations. Based upon the elevation of spillway culvert inverts, the capacity of each of these irnpoundments and the calculated runoff volumes for the lGyear, ?S-year, and 100-year, 24-hour runoff evelts draining into these irnpoundments from uplaad drainage basins are given in Table 3.12-2, As can be seen in Table 3.12-z,all impounrtments on the proper$ will contain runoff &om the l0G.year, 24-hour events with the exccption of Impoundments R and P. However, Impoundnent R will contain nrnoff from the calculated 25-year, 2ahour runoff event and the capacity of Impoundment P falls 03 acre-feet short o1 sopgrining the calculated 100-year, 24-hour nrnoff volume from the undisnrbed drainage basin. None of the railroad grade impoundnrentsghgs, sig,ns of significant water impoundment.

Table project 3.12-2 Barnep canyon Impo'ndrnent eelltainmsnt Vorumes Runoff Volumes (Acre-feet) r-poundmenU Watershed Impoundment lqr ?Syr 1005rr

M 565 47.0 5.8 7.1 103. P 332.0 a5 105 14.1 a8 o !)6.0 t2.4 3.0 4.L 6.9 R 46'2.0 2L.0 14.6 19.6 33.1 s s80.0 85.4 18.4 u.7 41.6 T 37.8 9.0 L.2 1.6 2.7 Mel-Co 43.5 80.0 L.4 1.8 3.1 Du-p 6500A ?3.L 51.9 0.9 r.2 2.0

R'noffvolumes are based on the weighted 'Runoffvolumes curve numbersfor each watershed. cited for M includJrunofffrom the a_djacent**t" au-pr.

REVISED 9-29-89 The placement of the Mel-Co pit and mins dumps will impact the natural surface water dreinage characteristics of a tributary watershed of Dry Fork Canyon (Plate m). Precipitation and upgradient runoff in the pit wiU be contained wirhin the pit (Plate m;. Water will not drain from the pit into the Dry Fork drainage. Mine dump 7100 will fill the upland drainage area of the Dry Fork basin creating the Mel-Co impoundnent. This dump will be constructed by filt;ng the drainage with waste rock across fts gfuannst so that some impoundment capacity will be lsnlized almost immediately and the capacity will increase with time. 1a;5 impouodment will have the capacity to coltain 35 acre-feet of runoff volume upon completion and will easily contain runoff from the 10G year, 2Ahour storm event as Table ?.L2-2 demonstrates. The watersheds that will discharge water into the Mel-Co impoundment include runoff from tbe drainages impacted by the lower elevatioo Mel-Co haul roads and from the 23 acre uadisturbed &ainage basin to the wqst of the impound"'ent and &om the Mine Dump 7100 surfacc. Any water released from the Mel-co impoundnent will be contained doumstream in a much largcr impoundment that has been created by mine dumps placcd acrossDry Fork as part of Ksnnecott's Utah Copper operations.

The Mel-Co pit haul roads will carry runoff water along a series of roadside triangular ditches to be routed around the rnine dumps before release into either the Mel-co impoundment or a snall channel east of the waste dumps (Plate ltr). Comrgated metal pipe culverts will be placed in areas where drainage will cross the roads. The haul roads will be excavated into bedrock srsating stable roadside ditches. A triangular c,hannelhas been designed to carry water from the eastern part of o the Mel-Co mins drrrnp are4 including areas occupied by haul roads of Mine Dump 73(X),to an area southeast of the nine dumps for discharge into Dry Fork Creek. This channel will be constructed at a gradient of lVo or less along the geaerally undisturbed section sf csennel placement so inliltration and evaporation will be maximized- This channel was desiped to maximize seepage 61d minimize runoff from this steep area. These ditch designsare illustrated in Appendh Dtr.

3.f2jl Qperational Sedincnt C,rmtrol

The nature and placement of the mine pits, waste dumps and leach pads will potentially increase the erosion and sedi-entation rates in the project area. Much of tbe rock and alluvium exposed dtui4g rnining will increase the potential for serli-ent movement both on the site and to locations off site. To control this process, a number of sediment control features will be placed on site to inhibit tle movement of sediment. These structures include detentioa lasins to contain sediment, diversion channels to divert the flow of water around areas having 3 high potential for sediment movement, and silt fences placed below potentially erosive areas to control gsdi'nsat movement into

96 REVISED 9-29-89 nearby sfuanngl5. Hay bales will be placed in areas recognized as having excessive sediment movement dndng operation for additional control of erosion.

ffis dssilting pond" located imrnsdialsly west of the solutions ponds, is designed to contain storm runoff from the l(X)-year, 2Ahoru event in the upland watershed. This desigD is based on BWpC approved criteria. The discharge from the pipe spillway serving the sedimEnt control inpoundment is collected in a bifurcated pipe that is counected to a 3Ginch dianreter CMP storm drain. This pipe blpasses the solution pond area aad dischargas into an existi4g 4S-inch diameter culvert which passes under the B&G grade east of the solution ponds. This storm drain will pass the flow from a l(X)-year, 6hour precipitation eveut. The najority of the runoff from the small &ainage area surrounding the solution ponds themselves is collected in a concrete sump just west of the ponds and is plrnped into &s dssilringbasin.

The abaadoned B&G grade railroad embankmcn! located along the eastern edge of project site, creates a number of impoundments which will bc used to eliminate sediment release fron the site. These wilt atso be used as cmergency 6ppfainmsaf for solution pond owrflow (plate uD' The designed SG'year event capacity emergency culvertg described above, provide the only discharge Points from the impoundments. These sedinent storage lacinr will be maintained as needed by periodic remoral of the collected ss.ti'nsnts to maintain the existing capacities of the impoundments. Stage capacity curves (Appendix D-I) for each of thase inpoundments have been produced to veri$ that the impoundnents have adequate capacities to contain the lo-year, 2A-hour runoff volt""es from the upstream dvainage are6. Sincc rhis railroad grade cuts across all of the drainages donmgradient of the project site, any s,sdimsnl not contained by upstream sediment control structures such as silt fencesor hay bales would ultimately be contained within lgsss impoudments.

TVo forms of sediment control will be implemented to controt sediment nrnoff from the waste dumps, the largest potential souroes of scdiment on the property (plate III). Waste dump surfaces will be sloped away fron the d"-p margins. gerlimsat barriers wi[ be placed dowagradient of the toe of the dumps where needed to provide protection against sediment movement from these drrrnps. Any serliment not contained by tbese forms of sediment control will be deposited either in the cpbemeral shannsls or behind the impoundments. Natural vegetation in areas undisturbed by opcrations will also retard sedimeat movenent dounward.

The Mel-Co Pit and waste dumps are situated near the ridge of the Dry Fork drainage basin m). mining Ghte t[g disturbances that could potentially increase sedimentation rates include haul

REVISED 9-29.89 roads and wastes drrrnPS. $s.limgnt will be controlled by usi'g ssdimgnt barriers and the Mel-Co irnPoundnent rnininriz€ [9 sediment movenent from the site. All uncontrolled sediment will be contained by the dowqgradient waste dump impoundment operated by Kennecott's Utah Coppe, Division.

The haul roads connecti4g the waste dumps to the Mel-Co Pit will be slopcd such that runoff from the road surface and the uphill watershed area will nrn along a series of connecting roadside ditches bcfore being spilled into Dry Fork below. The ditches wiu be crcavated into bedrock tberefore, the erosive forces of gully erosion during ditch runoff pitt !s srnatt. The roadside fill slopes ofrer the greatest potential for erosion as these slopes wi[ be nuch steepcr rhrn 1trs hiilsids on which they lie. Sediment from these slopes will be caried alo4g the roadside ditches to be deposited behind silt fences or the Mel-Co impoundment. These structures will be placed in the lower elevation of the Dry Fork channst @ate ltr). The natural vegetation in the area will also retain some sedi'nent as it movesfrom the disturbed areas.

Othcr operational sources of scdimeat would be from the fill slopes created by the haul roads, leach pads, and process areas. This sediment will move down into the drainage channels and will eventually be carried to the railroad impoundments where sediment build-up will be monitored and cleaned out when neoessary.

The potential impacts to Barneys Creek &om the proposed rnining facility will be caused mainly from haul roads and the Barnep C;anyonpit (Plate III). The largest potential inpacts to Barneys Creek will be from the erosion of haul road fill material during construction increasing sedimentation rates into the stream channel. This impact should be of short time frame. g1tr"1 impacts to Baruep Creek could occur &om haul road placenent across the stream channel potentially causiag degradation or aggradation of the streanr cfuanngtupgradient and downgradient of the crossing. Any additional sediment loads cntering the stream chennel will be impounded bchind the railroad impoundment downstream and wilt not leave Kcnnecott property. Due to tbe location of this impoundmeDt' wNter quality stream flow monitoring is not planned. There will be no impact on Barneys Creek &om Barnep Canyon open pit due because the pit itself will prevent any discharge from occurring.

Topsoil stockpiles will atso be potentiat sources of sediment release (plate Itr). The topsoil stockpiles will be located on the ridge+ops away fron &e stream channels [s minimioe topsoil discharge into the channel. To prevent the topsoil from washing away during heavy rainfall events,

REVISED 9-D-89 silt fences wiil be Placed in areas around the stockpiles where the potential for erosion is high. These structures will be periodically checkedand maintained when needed.

The Mel-Co mins dumps will be located just downgradient of the ridge and cxtend nearly to the base of the slope (Plate ltr;. The a"gle of repose of these durnps will be steep so the potential for erosion i5 signifigant. Any s,E.limsat originating from these dump faces will be carried directly downgradient to be deposited behind the sediment barriers located in the drainage area below. Any sediment origbating in the rni"e pit will also be deposited behind thcse sediment barriers.

3.1!l DisturbedAcreagc

The total disturbed acreagefor the project area is summarizedin Table 3.ui-1.

Table 3.1i1-1 Disturbed Ar:s3 gumrnary

S!!e. Acreaee (Ac) EITS

Barneys 56.4 Mel-Co 35.2 ROADS

BC Haul Road 143 Landbridge #2 6.4 Road #1 43 Road #2 4.6 Iab/Process Plant Road 3.7 RunawayRamp 1.2 Access Road to Mel-C-o and Mel-Co Haul Roads 375 ADMINIPROCESS/SHOP

{rlmining{ion Buildirg 3.4 Process/Lab 17.9 Crushing/Soeening 9.1 Shop 10.4 PotableWater Storage 0.2 Ore Stockpile 6.t GraveVClayPit #1 15 ClayPit #2 25 Alternate ClayPit 1.4

99 REVISED 9-29-89 Table 3.L11 Disturbed .fusx grrm,nary(continued)

TOPSOILSTORAGE PILES

A 2.7 B 1.0 c 55 D 43 E F z7 2.7 G 55 H 15 I 4.1

WASTE DUMPS

6300 East 6.7 6400 West 30.6 6500 West 11.0 UBW 6600South IBW m2 6400South 26.4 Mel-Co Mine Dr"'tp Surface 332 Mel-Co Mine Dump Outslopes 92 LEACH PADS

BC-1 fi.7 BC-2 4.7 BC-3 435 BC-4 583 M-1 M-2 n.8 185 Future pad Leach 165 MISCEI.ANEOUS

Substation .4 TOTAL 7L0.4

100 REVISED 9-29-89 THIS PAGE INTENTIONALLY LEFT BI.A}TIC

PAGES lOl.lAND 101.2HAVE BEEN ELIMINATED.

101 REVISED 9-n-89 4O IMPACTASSESSMENT

The predicted impactsof the Barnep CanyonProjoct ou the environmentare eirmmarizcdbelow.

4I Surfref,rahr

Barneys Geak vrhich florm from Baraep Caayonis intermittcat * ie hcadwatersand percnnial ot'€r mile a reach adjacentto the south side of the BarneysCanyon open pit and mine dgmp. The location of Barneys Creek is shoc/trin Ptate I. It is anticipatedthat the project will hara no impact on BaraeysCreek" Other naturat drainagesin the arca contain intermittent streams. The rnining operations will intemrpt sermal of the intermittent drainagesin the area The major

wi[ be located at the mine wastedrrmps whic,h will fill areascfiere natural drainages currcutly cxisr Additioaal project facilities influenciagsurface water runoff from the site include

haulroads, oper pit$ the cnrshersitg andthe leachfacilities.

The opcrational runofr control plan has been designedso that the site will have zero discharge during storm events with a l$'year, 2#hour recurreac€interval. Hencc, ns impact to offsite surfacewater is anticipatcd"

Despite the modificationsthat the project will make to the locat cpheneral ard intsrgittent drainagepattern, these modificationswill have no effect on existingnon wildlife water use. The creation of impoundments on the site nay harrca beneficialafrect on wildlife and liwstock that will usethe areafollowing recramation by providingseasouar water supplies.

Lgz 42 CroundWarcr

The Barncp Canlon rnining projcct is anticipatcdto haw os i'npact on grormdsratcrquality

bccauscall lcach solutionswill be coataincdon sitc in tincd nufacc impoundmcntsor within thc liacd heaplcach pads.

ltc groundwatcrquastity Eay bc altcred by dcwateringof tbs Barucp Caayonpit during rnining

opcratious Bccauc of the ptanneddcpth of thc Baracyscaryoa pit, -i',i'g bclow thc water tablc

is e'ryccred to occ[r. To coatrol watcr in thc pig dewatcring will be rcquircd usi,'g dccp pcnetration production*dls placcd arouod thc circumfcrcaccof thc pir Ttis puurpiagwill rcnorr watcr Aom thc bcdrock aquifcr creating a oone of dcprcssionbclow thc pit arca 1tis couc of

dcprcssiouis aot anticipatcdto influencencarby watcr urc\ giwu thc long distaaccand thc low permeability of the aquifer. All intcrccptcd pit watcr will be utitizcd as neccssaryfor dust control

on thc roadg ald for proccssrnrkggp watcr. Watcr dghts wiu bc 6lcd with thc Division of Water Rights for the rolumc of water to be ucd duri4g opcratioos. It is aot anticipatcdrhal inflsw ts

the pit wi[ yield more watcr than s3s bc uscd dudng opcratious,howcver, if this tatcs place,

cxccsswater will bc dischargcdinto one or Eors ucarby drainagpswhcrc &c watcr qrill i'npound

bchitld thc railroad impouadacatson thc castcrucdgc of the property. No dischargcinto the tirre

strc^aEchannel of Barncp Gcck will take place. thc water will infiltratc into the groqnd bchind the gradc. No dischargepcrnit wiu be accdcdbccause rhic q6tsl will not lcaw tbc propcrty.

The Mcl'Co Mine Pit and adjaccnt waste dump will also f,gys Erinimal impacts on the groundwater. Darncsand Moore (1988)determind basedupon piezomctersconpleted in cxploration dri[ holes' that tbe approxinatc clcration of the watcr table bcueath Mel-C.o to bc 6800 feet (AI\'rsL)' c\rrent miac plo'q rcflect the maxinum possiblepit dcpth and indicatethat the clcvatioa of thc pit bonom will aot exoccda dcpth of 6900fcct. Thercfore, no impact upon grouldwatcr

1(B REVISED7.2G88 quantity or qrtaliSyfrom the Mel-Co pit is anticipatcd.

43 SoilRcsourccs

Opcrational and post-opcrationalnmoE control plans prcrrcut the crosion of in-place and

stoc&Pilcdtopsoils. Duc to stccp slopcs and relatcd workcr safcty requircncats, vzrianccsfor

topsoil salvagingaad rcplacencat arc bcing songhqas disossed in Sccion 6.0. With tbc cxocption

of arcas proposcdfor narianccgtopsoil wi[ bc sahagcdfrom all other disturbcd arcas. Su6cisnt

topsoil will bc salragcd to insrue that all nrfaccs rcccivirg topsoil dudng rcclanation wiu bc

covcrcd by at lcast onc foot of topsoil Reptacedtopsoil wi[ bc rcrrgetated with an appropriate

sced mix both for the purpose of erosion prcrcation and for wildlife and cattle forage. Soil

stockpilcs wiU bc protcctcd &om crosion with an intcrim corcr of grass. Soil resoruceswitl,

thcrcforg bc protectcdto tbe maximumcscnt that prudcntand safc rnining praaiccs allow.

4.4 Gitical Wildlifc llabitats

The open pits will be thc onty parts of the disturbcd areas that will not be rcclaimcd and, thcrcforc, will not bc arailablc as highquality wildlifc habitat as thcy arc now. The project arca is importaat habitat to both decr and ct\ howcrcr, &c tossof forageand covcr will be rninimalin thc oontcs of tbe proicct as a wholc. Possiblcchangcs in rigratioa routcs will only be temporary gircn thc short lifc of the rninc. tf,is ninimal impact to tbc wildlifc habitat will bc mitigatcd somewhatby thc crcation of wildlife wateringsites in impoundmeutsin the BarneysCanyon pit and behind mine dumps. In addition, Kcnaecott'spractice of allowiogao hunti'g on its property will climinatcthe impactsof combined[nnting prcssureand babitat loss on the herds.

thc Division of Wildlife Rcsources(D\lR) has becn informed of the Barucp C-anyonproject

REVISED 7-2A-8 rclcing for tbcir reconncDdationsoolcaraing clk catvinghabitat and c& and dccr winter mnge.

Kcanccottand the Division of OiL Gasand lfining harc bccu informcd by thc DWR that the projcct

opcrationswill not adrrcrsclyaffcct clt calving hsbitat and rhat thc only r,,irigqtio lcccssary will

bc to rcducc travel in thc main brarch of Dry Fork and that portion of Baracp Canlou above thc

ffi foot clcratioa as much as possiblcdndDg calving 6casoD. Ncithcr thc Mcl€o or Barucys

Caapn opcrationswill rcquire aoccssto thcsc areas. Kcnnccottcrnnot of coursc rcsaia acccssto

priratc landowncrsor lcasc holdcn rvho uay rcquirc a@cssto propcrtiesil thcsc cantossor to its

o*a pcrsoaaclnrho any harrsto entcr tbc nqin fuassfi of Dry ForL for thc purposcsof property

amintcnanccor watermonitoriag.

45 AirQoality

4i1 smisciossrculting from thc rnining opcrationswi[ bs ftrgtirc dust and dicscl cmissions. A

aumberof point Eolltcc air cmissionBourccs will occur within thc proccssplaat area Thc principal

point eourcc cnissions will bc dust from thc cnrshing aad scrccning opcrations Dstailcd air

earissioascalcolations arc incorporatedin tGonccotfs T.Ioticc of Istcnt to Commcacelvfining aad

Gold Proccssingopcratioaq Barnep CanyonProjccq Salt Late County,Utall Subnincd to Utah Burcauof Air Oualiy (AONOD.

Ifuunccott's cnission control plals for thc projcct will incorporatq as Utah Burcau of Air

aua[ty rcgulations rcquirc bcst arailable control tcc.hnolog for supprcssionof cmissious. Thc controllcd cEissioascalculations in the above.rcfcrcnccdAQNOI indicate that thc Baruep Canyon projcct will not bc a -ajor cmissionsouroe undcr Fcdcral Prcrcutiou of SignificantDsterioration

(PSD) rcgulations. Thercforc it is concluded that &c project will not causc a significant dctcriorationof air qudity in thc area.

105 REVTSED7-20-88 46 hblic l{calrh a"dsaf*y

rrrining .[ll and proccssopcr,ations will bc opcratcd iD firll aocordancewith safcty rcgutations

administcrcdby thc FcdcralMinc Safctyand Hcatthdrftninirtration (MSILd). The ocaryationalsafcty

rnd hcalth Programwill aot only protcct worlccrsafcty and hcatt\ but also tbat of mcobcrs of the gcncral public tbat will visit tbc propcrty. Maintcnanccof a safc on-sitc work cnvironmcntand

adhcrcne to tbc air cnission control progran will iuure that no harnful airborne particulatc or elcnical cmissionswill lcaw thcpropcrty.

IGnaccotf by virtuc of ie cacDsiveland ouruenhip in the area, coatrols all acccssto the propcrty. Hcnce, an cffcctive safcty buffcr zonc is adjaccat to the projca sitc. In additiou to

otrcrall controlled acccssaad the site safctyprqgam, other specificsafcty Bsasurcs wiu be takcn to

firthcr insruc public safcty. Ttesc mcasurcswill iacludc loc&cd gatcs at all acccsspoina ufrcn

opcrationsarc dormant,fcnccs around all proccssarcaE and scclrity grurds to controt public acccss at all timcs dndng the tifc of the project Warning cignc ajd safcty bcrns wiU bc installcd adjacent to pit highwa[s following complctionof nining Es part of rcclamation In additioq all

Proccssfacilitics wiu bc rsdaimcd aftcr any qanide-bcaringor othcr toxic-materials-bearingwastes are ueutralizcdor safclyrcnovcdfrom thc proparty.

105.1 REVISED 7-20.,88 5J RECXAMAIIONPI.AI{

5J Pd-niningLandUsc

The post-mining land use for the rcslaimsd rnins dunps and leach pads will be for wildlifc habitat and livestock g;azing. The post-rnining land use for the open pits wi[ be ss.timeaf control.

The pits will contain sediment eroded from the open pit walls. The Barncys Canyon pit wiu serve a secondarypurpose ofproviding a souroeofwater for wildlife.

52 Demolitim andDispcal

521 FaciliticsRclnoval

AII non-earthen facilities will either be transported from the site for rse elsewherg salvaged, or demolished if necessary. Any paved surfaces will be removed and handled as demolition debris as described below. The various facirities will be removed or disposedas follows:

will be salvaged s1 6encported from the site for use elsewhere;

buildines win be salraged or demolished and removed from the site, untess they are required for

o11"1nsp-hining use.

oowerlines and substations will be removed and salvaged upon completion of the operations,

unlessthey are preservedfor a continued non-mining usei

fuel and explosivesstoraee facilities will be salvagedor transported off-site for disposal; and

fenceswill be removed and salvagedor jn,,ked following completion of reclamation.

Necessarysecurity meastueswill be maintained until satisfactoryreclamation has been achieved.

106 REVTSED9-29-89 522 DcmolitionDebris Dlpcal

Demolition debris that cannot be salvagedwill be deposited in a permitted solid waste lan.rfin.

523 llazardous Substanccs

As the data presented above in Section 3.11 demonstrate, it is not anticipated that materials left

on site following reclamation will be hazard6us. As discussed below, each heap leach installation will be rinsed and have its cyanide neutralized prior to regrading and reclo-ation. Mine dumps will not be toxic. Any other process waste materials that accumulate on site, either in containers or impoundments will be disposedof propcrly, taking into account potential hazardouscharacteristics.

53 Rcgrading and hoess Facilities Ctosnre

Proposed procedures fel rnins dump and process facilities regrading and/or closure are presented below.

53.1 OpenPits

Open pits will not be used as sites of rnine dumps and" therefore, will not be backfilled. The pits will serve as catchment basins and prevent release of sediment eroded from the pit walls. The pits will not be revegetated or topsoiled. Pit stopes will reach 47 degrees and, therefore, slightly exceed thc Division's maximum slope requirement of 45 degrees. Variances to acco'n,,,odate plans for the final condition of the open pits are requested in Section 6.0. Safety berms or fences will be installed along the margins of all pit highwals.

r07 REVTSED9-29-89 532 lvfineWasteDunps

Waste dump outslopes will be developed during mining at a slope of approxim ately 37 degrees. All Barneys Canyon pit mi"e dumps wiil be regraded to a slope of 2h:lv (22 degrees). The regraded bench outslopes will be terraced for the purpose of runoff and erosion control. Teraces will be approximately 10 feet in width and will be constructed at vertical intervals of 100 feet. The regraded Barnep Canyon dumps will be covered with approximately one foot of topsoil and revegetated accordi'g to the revegetationplan presentcd in Section 5J througb 5.g.

The configurations of the Mel-Co rnine dumps have been revised as a result of the decision to increase the size of the Mel-Co open pit. The outslopes of the small dumps or fills above tbe 7200 drrrnp will be regraded to a slope of 2h:1v (Zl degrees). The outslopes of the Zl00 and ?200 dumps will not be regraded because doings so would result in additional disturbance of the watershed includi"g adjacent hillsidss' and the ephemeral channel in the canyon below the dumps. Sufhcient topsoil to cover the regraded slopes of the upper Mel-Co dumps and all dump surfaces will be

borrowed and stockpiled from the Mel-Co site.

533 Hcap I-each Pads and Sohrtion ponds

When a leach pad is completed" it will be rinsed to remove the cyanide solutions, draine4 and left for recla-ation at the close of all operations. The neutratization criteria will be determined by the Water Pollution Control Committee or the Bureau of Water pollution Control (Bwpc) at the time of decommissisning. fr" oeut tlioution criteria will ensure that no degradation of the surface or groundwater quatity or beneficial uses thereof takes place following regarling and revegetation of the heaps.

108 REVISED 9-29-89 The closure Process *iU bcg" by terminating thc addition of NaOH and NaCN to the barren

pond water and allowing the pH of the circulating leach solutions to gradually adjrst to a natural

pH of about 7. The neutral solution pH wiU cause the CN in the wet ore to gradually be converted

to volatile HCN which will be liberated to the air-filled voids within the heap. This HCN will gradually and harmlessly diffirse to the surface of the heap where it will be released into the

atmosphere. The final neg6nlizali6n procedures will be described in a closure plaa to be reviewed

and approved by BWPC six montbs prior to beginning neutralization of any pad.

When the heap har lssn asutratize{ ifus maksup water flow to the barren pond will be turned

off and the water in the pregnant and barren ponds will either be pumped to another active leach pad or evaporated. The ponds will then be allowed to dry ssd lgneining sludges will be sampled for EP toxicity characteristics. All solid wastes will be properly disposed of taking into account their

chemical characteristics. The poud liners will then be removed from the anchor trenches and folded into the ponds. The pond areas will then be backfilled with earth, and topsoil from nearby stockpiles will be spread evenly over the regraded surface.

The leach heaps will be re-contoured to gradually rounded slopes of 2h:1v or less. The re- contouring process will include pushing neutralized heap material over the pad narginal dikes to cover ttre cxposed liner. Topsoil from the stockpiles will then be spread evenly over the re- contoured surface and the specified vegetationmixfue will be established.

The rinsed leach solution pipelines will be taken up and removed from the site. The liners in the pipeline trenches outside of the leach pads will be removed from the trenches, rolled up, and disposed in the solution pond excavationsprior to their being backfilled. The trenches will then be regraded,topsoiled" and revegetated.

109 REVISED 9-29-89 5.4 SoilMatcrials

5.41 TopsoilApdicatim

During reclamation" all disturbed areas, with the exceptions of the open pits, the clay borrow pits, and the Mel-Co 2100 and 72gg drrmps, will be covercd with topsoil having s sqminal thickness

of 12 inches; areasto receive topsoil are describedin section 5.4.3.

Kennecott commits to placement of one foot of topsoil on all distrubed slopes having an outslope of 2hl1v or less. A revegetation test plot progrem, designed to determine if the Met-Co drrmp material can be ditectly revegetatedwill be developed; however the design sf this progran will not be included ii 1f,srnining and reclamation plan at rhis time.

5.42 TopsoilHandlhg

The topsoil redistribution will be carried out during the su--er in anticipation of fall seedi,g. Thus the soil will be relatively dry and compaction minirnized. Minimidng topsoil compaction is very important considering the clays and clay teams presosl is many of the soil tlpes, especialty the Harker and Dry Creek soils. Topsoil materials will be noved with a scraper or loader-d'rnp truck operation and will require some sprearling with a blade. The contractor will be cautioned to keep tbe soil suface rough and to avoid blading to obtain a smooth surface. Evenness of depth will be sacrificed fq1 lenghnsss of surface.

To relieve compaction all topsoiled areas will be ripped to a depth of 12" with the rippers set at 12nspaci"g.

110 REVISED 9-29-89 5.43 TopsoilBalancc

Topsoil sour@s by soil tlpe are sn,nmarized in Table 5.4-1. Table 5.42 presents the topsoil

rolumes to be applied to the rarious sites. A swell factor of 21 perceng one-half tbat estimated by

the Caterpillar Performance Handbook (Caterpillar, 1988), was applied to the in-place topsoil vol,,-e.

The topsoil excesswill be applied as site-specific conditions require.

Table5.4-1 Topsoil Sources by Soil T!'pes

SoilTbe Volume.Cu. Yds.

Bradshaw-Ag;assiz l?l'Lg4

Harker-Dry Creck 319,63

Dry-Creek-Copperton q2,5%

Copperton nJ67

Total Topsoil Available ffi,521

Swell Factor of.ZL% 188.969

TotalAfter Swell 1,049,490

Table5.4-2 Topsoil Applications by Sites

&. Acreaee (Ac) Volume (CY-) ROADS

BC Haul Road 143 23,07L

Landbridge #2 6.4 10,325

BcAccess Road 8.9 r4359

LablProcess Plant Road 3.7 5,969

RunawayRamp t2 1,936

Access Road to Mel-Co and Mel-Co Haul Roads n5 60,500

111 REVISED 9-D.89 Table 5.*2 Topsoil Applications by Sites (cont.)

S!!e. Acreaee(Ac) Volune (C\t)

ADMIN/PROCESS/SHOP

{drninistl{ion Building 3.4 5,485 Process Bldg"/Substation 2L.l 34,105 Crushing/Soeening/Ore Stockpile 173 n,876 ShoplPotable WaterStorage l:}.3 21,490 GraveVClay Pir #1 15 44n ClayPit #2 25 4033 Alternate pit Clay t.4 2,89

WASTE DUMPS

6300 65.8 106,159 ffi 273 44,059 6500 45.1 72,747 BC pit RoadfillD,rmp 5.4 &658 Mel-Co Mine Dump Surface 33.2 53,563 Upper prrmp Mel-C.o Outslopes262 44247

LEACH PADS

BC-1 56.9 e\n4 BC-2 43.5 70,v+5 BC-3 50.8 81,974 BC-4 ffi2 n,L62 M-1 30.1 4,496 M-2 19.7 31"tls

L12 REVTSED9-29-89 Table 5.4-2 Topsoil Applicarions by Sites (cont.)

S!!s. Acreaee (Ac) Volume(CY)

Futue l-eachPad 19.4 3L.zffi

TOTAL DEMAND 579.6 993,954

TOTALAVAII.ABLE 1,048,490 TOPSOI BAT.ANCE(EXCESS) y,637

55 SeedbedPreparation

Topsoiled areas will require no seedbed preparation since seedi.g will closely follow placement of

topsoil. seedi'g on topsoileddr"np surfaceswill be 6scomprishgdwith 6 yarrgedrill.

5.6 S€edleure

Three different seed mixtures are proposed for the Barneys Canyon projecl Species were derived from the plant cs-"'unity descriptions and experience with other revegetation projects in the Oquirrh ftange.

Areas which are proposed to receive topsoil will be revegetated with the seed mix shown in Table 5'6-1' Outslopes of the Mel-Co 7200 and 71gg drrmps are proposed for variance from the topsoil redistribution requirement. The seed mirure recornmended for non-topsoiled surfaces are shown in Table 5.62. The segment of the Mel-Co to Barnep Canyon haul road that passesthrougb tbe riparian vegetative community a-djacent to the streem in Barneys Canyon wi[ following

lUi REVISED 9-29-89 aPplication of topsoit be revegetated using the proposed riparian seed mixture which is presented in Table 5.63.

An even mirrue of Gambel oalg rabbitbnrsh and snowberry tube stock planted in clumps of 3 to

5 each will be planted at a rate of ti5 plants per acre, three times tle application rate proposed for the topsoiled surfaces. The planting procedure for each clu-p will begin with excavation of an over-sized hole which will be lined with mulch. A slow-releasefertilizer pellet will be placed at the bottom of each hole. The tube stock will be then planted and the hole filled sad larnped. A mircure of legume seed will be hand-applied to the surface of each planring site for enhancement of nitrogen development in the planting nefirrm. The Division will establish a survival rate, as a percentage of total seedlings planted for the un-topsoiled drrmpS surface. This suwival rate is currently ssririlatsd to be 30 perceat. ltis survival rate will be achieved at the end of the three

year period following completion of reclamation.

As a result of discussionswith DwR personne! it has been agreed that additional legumes and forbs will be added to the revegetation seed mix to improve the spring forage for deer and elk in the reclained areas of the Project. DWR personnel feel that the addition of these species ts this large reclaimed area wi[ significantly improve the early spring forage above what is currently present' This improved forage over this large reclaimed area will provide enhanced habitat to both deer and elk' Therefore, the current reclamation plan with the modified seed mix is, according to DwR, the best meansof enhancingthe post-rnininguse of the reclaimedarea.

Kennecott understands that the need for topsoil on the tops of benches cut into Mel-Co mine dunp outslopes will be based upon the suc@ss of revegetation test plot work on tle dumps to be conducted during operations. Kennecott will stockpile sufEcient additional topsoil to handle this possible need. The benches will be topsoiled only if the revegetation test plot program indicates

REVISED 9-29-89 that direct revegetation of the d'mp materials will not be successful. To the ercent possible, the dump outslope size will be minirnizcd by co,,fir,i'g waste as close as possible to the Mel-Co pit in the drainage occupied by the ?100 dump and by mini'niing to the e*ent possible, the amount of waste rock placed on the 7200 dump. It is not possible to reduce the size of the Mel-Co dump.

115 REVISED 9-29-89 Table 5.6-1 SeedMi*ure for Topsoiled Areas Prs(l)rbv

CommonName ScientificName Acre

Grasses

bluebunch wheatgrass Asroowon soicatum 3

intermediate wheatgrass Asoowon intermedium 3

Great Basin wildrye Elvmus cinereus 3

Kentuclry bluegrass Poa pratensis 0.5 Legumes

yellow sq'eetclover Melilotus officinalis I

Cicer milkvetch Astrasalus ciccr 1

purple prairieclover Petalostemumoumureum 1

ladak alfalfa Medicaeo sativa 1.5 Forbs

yarrow Achillea millefolium 0.25

balsamroot Balsamorhizasasittata 1

blue fla:r Linum lewisii 1

firewheel Gaillardia oulchella 0.5 Shrubs

Basin big s4gebrush Artemisia tridentata 05

rubber rabbitbrush Chrrnothannus nauseosus 05

antelope bitterbrush Purshia tridentata 2

curleaf mahogany Cercocamusledifolius 1

Totd 20.75

116 REVISED 9-29-89 Table 5.61 SeedMirure for Topsoiled Areas (Continued) PIs(l) rbv

Common Name Scientific Name Acre

Plantinss

Gambel oak (clumped) Ouercussambelii 4s#uA(2)

(1) PIS = Pure Live Seed

(2) Tubestock will be plantedin clumpsat a rate of 45 plans per acre.

Table 5.62 Seed Mi:Crue for Areas Not to be Topsoiled PH(l) rbv

CommonNane ScientifrcName Acre

Grasses

bluebunch wheatgrass Agoowon spicatum

tall wheatgrass Agroowon eloneatum

Legumes

yellow sweetclover Melilotus officinalis

shrubs

black sagebrush Artemisia nova -050 rubber rabbitbrush Chnaothamnusnauseosus I

Total 8.50

tn REVTSED9-29-89 Table 5.6-2Seed Mixnre for Areas Not to be Topsoiled(Continued)

PIs(l)lbv

CommonName Scientific Name Acre

Forbs

gambeloak Ouercus sambelii 4s#u^Q)

snowberry Srmaohoricamosoreophilus 3

rubberrabbitbrush Chrvsothamnusnauseosus 1

(1) PIS = Pure Uve Seed

Table5.6-3 RiparianSeed Mixrure

P$(1) lbv

Common Name ScientificName Acre

Grasses

western wheatgrass Aeroo\Ton smithii

smoothbrome Bromus inermis

Lezumes

yellow sweetclover Melilotus offrcinalis 2

sweetpea Lathwus latifolius 4

Shrubs

woods rose Rosawoodsii 3

chokecherry Prunusviroiniasa 3

blue elderberry Sambucuscerulea 1

Totd 2l

118 REVISED 9-29-89 Table 5.6-3Riparian SeedMlcure (Continued)

PIs(l)lby

Common Nane ScientificName Acre Plantines

bigtooth maple Acer prandidentatum n #uA(z)

Gambel oak Ouercus sambelii q #uA(z\

(1) PLS = Pure Live Seed

(2) Tube stock will be planted in clumps at a rato of 45 plants per acre.

119 REVISED 9-29-89 5.7 ScedingMethods

Topsoiled dump top surfaces will be seeded with a range drill and topsoiled dumps slopes will be seeded with a hydroseeder. $ss.ling will take placc in the fall prior to snowfall The seeding depth for drill-placed seed will be 054.75" at the rate of application specified in the seed mirures presented in Section 5.6. Since the seed drilling will be the last step in revegetation, the fertilizer

and mulch will be turned into the soil by ths .tisks on the drill

Variances from the requirements for both vegetative diversity and percent vcgetative cover for the outslopes of the Mel'Co ?100 and 7200 dunp sites harre been requested and are discussed in Section 6.0.

Keunecott will use the Division's recommended methodologt for hydroseerting the steep, non- topsoiled slopes of the Mel-Co ?100 and 7200 slopes. These slopes wi[ bs hydroseeded in two steps. The seed nix will be applied first; then, in the second application, the fertilizer and hydromulch wiu be applied. A tackifier, included in the second application will be used to hold the seed and mulch in place after drying. Kennecoft prefers to retain the existi'g proposed sse.ting method for the regraded, topsoiled 2.h/1vslopes.

The planting stock will be tube stock and wiu be hand planted in early spnng at snowmelt. Planting will be in clumps of three in sites with aspect and slope to maxinize moisturc enrrapnent. The three plants will be located in the ccnter of a small basin

r20 REVISED 9-29-89 5a Ferdizatim and Mulcting

54.1 Fcrtilizatim ofTopsdcdAr€as

The goal 6f fsltilization is to raise the available phosphorus and nitrogen concentrations to 25 ppq and 0.@ respectively and to maintain the organic Eatter at 15 pcrcent. This will be

accomplished by utilizing green alfalfa hay io combination yigfu rtiamnonium-phosphate fertilizer in

the fall seeding schedule. This fertilizer will provide the nitrogen required for seedling gronth in the first gfowing EeasoD-

The hay at 4,000 pounds per acre will provide nitrogen, phosphons, and potassium at the rates of 100 poun& per acre, 20 po'nds per a.'e, and 94 pounds per acre, respectively.

The diammoniun-phosphate fertilizer 18460 at 310 pounds per acre will provide 49 pounds per acre ofnitrogen and 64 lbs per acre ofp205.

The diarnrnonium-phosphatefertilizcr will be applied in dry-pellet form with a cyclone spreader uit following disking of topsoil and prior 1e s6e.ling. A spring application of urea will be by dry rrsing pellet either a helicopter or a cyclonespreader unit.

During the planting of the sbrubsspecieq a fertilizer tablet of 2&lG5 will be inserted in the hole at root deptb and irrigated. Theseslow releasetablets are designedto provide fertilization to the ssedlingsfor two years.

127 REVTSED9-29-89 5a2 Fcrtilization of Nm-Topsoiled Arcas

Fertilizationof non-topsoiledareas (Mel-Co 7100and ?200dump outslopes)will be identical in

chemicalfertilizer tlpe and quantity as describedfor the topsoiledarea, in Section5.8.1. Fertilizer,

Eulch' and tackifierwill be appliedin a slurryby hydroseedi"gmethods.

5S3Mulching

Green alfalfa hay will be applied to all topsoiled surfaces and dump tops surfaces. As a mulch

it wi[ increase the organic content of the soils, increase the soil moisture holdi.g capacity, and

provide nutrients for microorganie,rncolsnizatisn. The buildup of microorganismc and the resultant

increasein nutrient cycling capability in the soils facilitates plant establishmentand growth.

The hay mulch will be applied at the rate of 4,000 lbs/acre following tippi"g and prior to sssding. The use of a mulcher or mulch chopper to blow in the hay will allow for even distribution and dismembermentof stemsto allow the disks on the seed drill to turn in the hay particles.

On sites where the seed ddll is unable to function and broadcast seediqg is used the hay will need to be covered with soil by backdraggingor raking.

1?2 REVISED 9-29-89 59 Surhce Water Hydrolqg and Sedimcnt Control

59JDrainage Plan

The post-reclanation surface a,31g1drainage plan will differ slightly from the operational water rnanagement plan. Main variations will include restoring water drainage to the natural channels by

removing all road culverts, placing waterbars on the roads to prevent road nrnofr, and allowing

precipitation water that falls onto the reclaimed leach pads to drain into nearby drainage sfuanngls.

In addition, two impoundments that will be created by waste dumps, the Mel-Co impoundment and

inpoundment M, will continue to bE used as permanent impounrl-ents following reclamation.

Upon project completion, alt haul roads will be ripped to permit ifug infil6dion of water

through the road surface. At this tims, 4tt culverts will be removed and channels restored to their

natural course. Water bars will then be installe4 at the spacing listed below, to divert runoff water

from the road surface to the roadside fill slopesto rsduce erosion (ptate vI).

Road Grade (percent) Snacine(feet)

10 to 14 200to 100

6tot0 300to Zfi)

4to 6 zl00to 300

lessthan 4 asneeded

The ditches that border the leach pads will be covered during regrading to allow the frce flow of water from the leach pads to drain to an exisringnatural channel.

123 REVISED9.29-89 mine The d'mpS will be ripped and revegetatedto control runoff velocities across the dump

surfaces. All precipitation water faling on the dunp surface will seep into the drrmp surfaces or

drain back toward the natural hiilcids. precipitation water falling on the d,mp 6ll slopes will drain

toward the dump toe over the ripped terraced and revegetateddump surfaces.

Runoff from the watershed upgradient of impoundment M and from the Mel-Co area will not be free draining followiag reclamatiou. Due to waste dnnp 6400 near the Barneys Canyon pit, impoundment M will become a permanent impoundmeut following rcclamation. Thc storage capaciry of impoundment M will be 47 aqe-teet while the calculated runoff volume from the 100-year runoff event is 16 acre-feet. Therefore, this impoundment has the capacity to contain runoff from events tbree times that of the 100-year runoff event. The Mel-Co i,,,pouodment will also remain following reclamation. The capacity of the Mel-Co impoundment is 80 acre-feet while the calculated runoff volune from the 100-year runoff event is 5.9 acre-feet. Water impounded behind these structures will be released via infiltration and evaporation. Infiltration will provide recharge to the underlying aquifer.

592 SedimentC-onnol Structures

Reclamation ssdirnsnt control procedures will be implemented so that soil conservation measures will require little maintenance and will lead to natural long term sediment control. one of the most effective forms of sheet wash sedimest control will be &e reestablishment of vegetation over the disturbed areas. The establishment of vegetation and reduction of effective runoff length usi,,g water bars on the reclaimed haul roads will be the most sig,nificanl forms of sediment control over the site' Any serliment loads originating &om the watershed upgradient of inpoundment M or the Mel-Co impoundment will be depositedin theseimpoundments. The capacityof these impounrrments are well in excessof the potential volume 6f ssdimsnt to be releasedfrom the upgradient areas.

13.1 REVTSED9-29-89 lfts sxisting impoundments crsated by the B&G railroad grade will remain after reclo-ation and oontinue to fuuction 6s sedimssl control structures.

REVISED 9-29-89 6J REQI.]ESTS F]OR VARIANGS

As the result of natural terrain conditions, the planned location 9f rnins dumps, the proposed

final outslops rngls sf seltain drrmps,and the planned post-mininguse of the open pits, a number of

variances from the Division's nrle M-10, Reclamation Standards, are requested. These variance

requestsare Presentedbelow in order of the listing of sub-parts of Rule M-10 iD the regulations.

6.1 VarianceRequest fron Rulc M-10(3)

Kennecott proposes to leave in place upon reclanation Impoundment M created by the f{)0 rnins

dump at the Barneys Canyon site, and the Mel-Co impoundment created by the ?200 dump (Plate III).

These facilities are part of the overall plan for site sediment control and their capacities exceed the

runoff volu"'e predictcd for the lfi)-year, 2Ahour precipitation event. In fac! as discussed in

Section 3.12, Impoundment M and the Mel-Co inpoundment will have the capacity to store four ti-es

and 22 rirnss, lgs,psctively, the volume of runoff predicted to result from the lfi)-year event. In

addition, $s fills will be constructed of porous waste rock and will not be designed to permanently impound water, hence the actual amount of water retained in the inpoundments is anticipated to be

much less than 1f,s predicted vslrrms from any given storm. Approval for installation of these two impounding structures will be sought from the Utah State Fngin6er in the Division of Water Rights.

62 VarianceRequcst from Rule M-il(a)

A variance from Rule M-10(4) is requested to allow the dump outslopes of the T2D0 and 7L00 dumps at the Mel-Co site to renain at the a"gle of repose following reclamation. Regrading of these dump outslopes would result i! the disturbance of previously undisturbed hiltsidss and in the

tu REVTSED9-29-89 disnrrbance of an additional segnent of the ephemeral drainage into which both mine dumps toe out.

Furthermore, these outslopes are situated such that they will not be visible to the general public.

In additioq benches will be constructed every one hundred vertical feet along the dump outslopes to

allow easy access for the hydroseeder and control slope erosion. The dump slopes will be

hy&oseeded to establish minimal vegetative cover. Slope stability analpes presented in Secrion 3.10

demonstratethat the mine dump outslopesare stable.

63 Vadane R€qpcstfrmRule M-10(t

Kennecott does not propose to back-fi!|, rcgradq topsoil or revegetatefts mine open pits.

As discusscd in Secrion 53, Kennecott proposcs to leave highwals in both the Barneys Canyon and Mel-Co pits which will have an overall slopc angle of 47 degrees; 2 degreas greater than the mCIdnunr highwa[ angle required by this rule. Stability analyses prepared by lGnnccott and discnssed in Section 3.7 of this document have demonstrated that the open pit slopes will be stable.

A variance is therefore requestcd. The approrral of the nariance request for pit topsoili'g and revegetationhas been granted in the Division,s May 25letter.

In addition to a varianc€ for slope angtes,Kennecott also requess that rariances for impounding water ir pits, application of topsoi! and revegetationbe granted.

fv[ining operations that consist of nultiple, adjacent, open pits lend themselves to placement of waste from pits nined late in the life of the operation in pits that were earlier mined 6uL The

Barnep canyon projec! however, does not appear to be such an opcration at this tine. Current plans call for the Barnep Canyon and Mel-Co pits to be rnined concurrently. Fruthermoys rnins economics prohibit lsnling of waste from one pit to another. In addition, the geometry of both

REVISED 9-A.89 open pits Prevents $lclcfilling of the pits with rnins qrasfs during fts mining operation. Partial or

complete Sackfilling with waste previously placed in mine dumps is not feasible economically.

As the statements presented above demonstrate, open pit -i"i"g of isolated ore bodies

necessitatestbat this activity Ss n sonsrrmFtiveland use. This has been the case historicslly in the rnining indrstry, and continues to be the case in currently operating and developing rninss itr ths

West today. The lower portions of both pits will be below local grade which will allow them to

serve as sediment retention basins thereby preventing the release of sodiment eroded from the pit

walls.

As has becn previorslypointed out, the Barnep Canyonnine pit may servea secondarybenefit

to wildlife by providiag a wateringsite in thtough collectionof runoff from the pit walls. Were the

pit to be partiallyback6lle4this potentialsource of waterwould be eliminated.

6.a VarianceRcqrrcst from Rulc M-10(g)

For the reasons discussed above in Section 6.1, Kennecott seeks a variance from this rule to enable Impoundment M aad the Mel-Co impoundmcnt to remain following reclamation.

65 Variane Rcqucst fronRulo M-10(U)

A variance from parts M-10(12)(a) and M-10(U)@) is requested for the outslopes of the 7200 nring and 7100 dnmps at Mel-Co. The steepnessand porous nature of the outslopes and the inability to topsoil them makes achieving 70 percent of the surface cover found in the adjacent, undisturbed plant communities ocremely unlikely, especiallyover a three-yeartime period.

726 REVISED9.D-89 6.6 Variance Request from Rulc M-10(B)

For the reasons discussed above in Section 6.1, Kennecott seeks a variance frq6 rhis rule to enable TmpounrlrnentM, behind mins dump 6400 and the Mel-Co impound'nent to remain fo[owing recla-ation.

6.7 VarianceRoqpest from Rule M-1O(14)

Kennecott requests a variance from the requirement of re-application of topsoil to the 7200 and

7100 dump outslopes at the Mel-Co site because sprearling topsoil on the 37 degree outslope will present a safety hazard.

tTl REVISED9.29-89 7.0 Reclamation Cost Estimate

Cosg for irnplementation of the proposed reclamation plan have been prepared for each

componeat on a u"it cost basis. This method requires three inputs; qu""tities of materials,

production rates, and equipment rrnit costs. euantities were determined from the reclamation plan

presented above. Production rates were calculated from procedures rscorr,,r,ended in the Cat

Performance Handbook (1989). Equipment unit costs were derived by avereging hourly lsts ssrimxtss

obtained from three local construction contractors.

Appendix H-1 provides spreadshcctsof the reclamation components and associatedcosts for each

area of &e property receiving treatment. All assumptions, references, and ancillary calculations

used in preparing these spreadsheetsare found in Appendix H-2. Table 7.0.1 srrmmarizesthe costs

for each component. The total cost of reclamation (in 1988dollars) is ssri'natsd to be $2,206,30.

Table 7.0.1Reclamation Cost Sumnrary

Comoonent Cost

ToPsoili"g 852,610

Pit SafetyBerms 3,370 Fill SlopeRegrading 4o7,m

Rip Topsoiled Surfaces 18,470

Leach Pad Perimeterand Pad Regrarting 23,T10

Fold Pond & Lcach pad r.inEls 4,990

RunoffControl 25,000

128 REVISED 9-29-89 Table 7.0.1Recl"mation Cost Summary(Continued)

Component Cost

Revegetation 7s4sil0 Equipment Mob/demo L3,2n

$ 2,101,280 Supervision (5% of subtotal) 105.060

Total j 2wN

IE REVISED 9-29-89 8.0 Refcrcnccs

C"ll and Nicholas, 1987, Barnep Canyon and Mel-Co Slope Design Prepared for BP Minerals America

Caterpillar,Inc., 1988. Capterpillar PerformanceHaadbook, Caterpillar Inc., Peoria,Ill.

P-o & Moore, 1988. Surface Water and Groundwater Assessnent for the Baraeys Canyon Gold Project Sdt kke County, Utab. prepared for Bp Minerals.

Hawking R.H. and K-4. Marshall, 1980. Storm Hydrograph Program, Final Report to the Utah Division of oil" Gas and Mining. utah State university i.ouoaatioq t,ogao, utal"

National Oceaaic and Atmospheric Administration, LyB. Precipitation - Frequency Atlas of the Western United States: Volume VI, Utah- NOAA Atlas Z

Sergent, Hauskins & Bechrit\ 1988. Geotechnical InvestigationsR"porq Heap Leach Padg Barnep canyon Projecl Salt Lake county, utah. prepared for Bp MLeraIs america.

Scrgent, Hauskins & Bechrit\ 1988. Geotechnical Investigations R"potq Waste Rock Dumps, Baruep Canyon Project, Salt lake Couuty, Utah. Prepared for BF Minerals America.

Soil ConservationService, 19t2. National FngrneeringHandbook Section IV - Hydrologl.

Soil ConsenrationService, 194. Soil Surveyof Salt Lake Are4 Utah- U.S. Department of Agriculture.

AJ-, !Y^:q Compiler, Lns. Geologic Map of &s gingham Disrrict" in Bray, E. R. and Wilson, J.C., eds., Guidebook 1s ths gingham Ml"tqg District Soc. Ein. Geologisq plate i.

Van Haveren, Bruce, P., 1986. Water Resource Measurcments,American Water Works Assog Denver, Co.

Y4a"U KM., Seiler, R!, and DJC Solomon, 1987. Chemical Quality of Ground Water in Salt Lake valley, utah, 1969- &5.Tech. pub. No. 99, utahDepartmcnt of Nattual Resourccs.

!V1dde4fU., Seiler, RJ-., Srntini, Melissa, and DJL Solomoq 1987. Ground-Water Conditions in ldJ Lake Valley, Utah 1%9-83 and Predicted Effecs of Increased Withdrawals from Wells. Tec,h. Pub. No. 87, Utal Department of Natural Resources. APPEI{DIXA.I

(CDNFTDETSTAL- BOUND SEPARAIELY) --REDACTED--

ORIGTNAIJ IJOCATED TN DOG}TCONFTDENTIAI' TILE

FIGUREA-I-1 CONFIDENTIAL BARNEYSCANYON DEPOSIT GENERALIZEDGEOLOGIC MAP AND CROSS SECTION --REDACTED--

ORIGINAL LOCATED IN DOGt,tCOIIFTDENTIAL FII,E

FIGUREA-T- 2 MELCODEPOSIT CONFIDENTIAL GENERALIZEDGEOLOGIC MAP AND CROSSSECTION APFEII{DTXA.tr

GEOII)GIC II)GS OF DRILL HOLESAIiID WELI,S ffKUJg\-:---iri:i c;." -.:.'.1re I r:...,L-.1 .-ri.Ctr LQG Cf rEs? EOR,ING B-1 JOBNO. NO. Rrc rypE CI'!E-55 _:i -; !r c EORINGTYPE 3s :o o rCr E - t. roo lJo suRFAcEelev. 5601.7 t\ oo :oc iitt 3s a: aa i: 1S DATUM- }Iine ::: oa a: GC' i3i -i :U oaa 9Ar :i oa ?J i!! OJ to. :U vtSuAL CLaSstFtcA TtOll lr f I slighcly moisr CRAVELLYSILT AhtD CLAy wic.h I hard sone fi.ne to nediun sand, low 1 I plasricity, brown I fl I I s 8L/Lt, I I

{ slightly moisc SILTY CI.AYEYGRAVEL A}:D I -- S' 5012;5" hard COBBLESuit,h some sanci, sub- d .GQ rounded, low plasticicy, !s light brornr I I note: very difficult auger- ing forn l0' to l2', refusal fl at Lzf (coved into weak sand- I stone boulder), moved I hole fl 5' south and resumed I I slighcl-v moisc GSAVELLYCL{YEY SAIID/SAITDY very firrn CLAYEI GRAVEL, low plascici.ry to firm { co uediun plasticity, brown- I ish red, and Dottled I brorcn, I light gray and yellow (possi- rl t bly volcanic snrd flow) i note: added water below 15 I g to reduce friction i I t i I note: very difficult auger- ing from 35' co i0'

.)

Auger refusal ar 41.5r (i400 psi, lifring drill rig). Installed nonicoij.ng well: pipe co: 40.6' slots ro: . 37.6' pea gravel to: 36.3'- crushed benconice co: 3_1..

GPOUNDWATER SAHPLE TYPE I A - Asgcrcunangr. A-9 B - Blccl roaplc r[C:7f SERGENT.HAUSKINS & s - 2" o.D. l.3s'. t.D. robr ronote. -'lJt+'l. EECKWITH u - 3" o.D. 2.r2..I n .,,r- .---r- i,r'tsk L(- (' (rr I JOENO r5t BORIHG NO. B_2 clE-55 _!! RIGTYP€ c a 3: E o o :5t a -: o o= - o oo ffiffiJ:t loo a ii; C- c aa a !:- DA c oa a': s::cc. ;3i U oaa E €r ucc 0 -i a --o "r:! o. :)g vlsu^L CL SStFtclttox

CLAYEY SAI{D At{D GRAVEL, tow plasticity, dark brown

slightl;r rnoisc SILTY GRAVELAI{D SAND' oon- dense Eo plasric, subrounded, lighc very dense grayish tan

eoist SAI{DY GRAVELwich rrace of very dense clay, well graded, subrounded to dense low plasticltlr, tan, orange, and Light gray

noi.st CLAYEY SAI|DY GRAVEL, predom- very sriff inantly fine sand, low plas- ro sriff ciciry to medium plasticity, ,atl. _ Ean : ,< i /..{r'ctlg-. t:.i.

sat,uraced SANDYCLIY-SILT, predominanc sriff 11r fine sand wj.ch scattered gravel, lon plascicity co s--50/5j'- uediun plasticity, tan

saE.urated S&\DY GRAVEL, predominanclv very dense fin to medium sand, s,rbangu- lar, light gral' and tan

Scoppedauger at 45.01 Scoppedsampler at 45.3' difficulcy removiug rods, had I f Eo Eurn augers several Eimes nixing clays, moved IS' co resample anci inscall monicorine well GROUNoWATER o€PtH HOUR SAr,tpLETypE OATE - A-IOA A Av9r. curiagr. B - Slocl roaclr 26.5 09:00 L2-4-87 - SERGENT.HAUSKINS & BECKWIT}f 5 2" O.D. 1.3g.. t.D. rvbc ronpto. !,TMi, U - 3" O.O. 2.J?.. t.D. rubr roaot-. rV'8h l l\vrSv. --JOB -l2:6.a-rf LW\J \.zl lrrr s(..)XltiG NO. B-2B pg- 867-2039i. Olri - (25' E , of B-2) nrcrvpe CME-55 -i! _t i :l c EoR|NGrVpe a 3s E Eo o T rCr li rJo o€ suRFAcEelev. rt i! i o ,30 :i; Cr a: .l: aa :- 1€ orruu ltin €:! ct q os .:: CC' 9o €t E i3i :U aaa JO ol o ai (,ac ('J t: ?l 1a i:= OJ -c )U REH RKS vtSu^LCL^SStFrCaTtox sc li CLAYEY SA,ND SILTY GMVEL 5 .clt

'.6-itQ l0 h-t' ,:d. CRAVELwich sone sand v, trace of clay .?,C.] - lo,i:-q

l5

Ito I I noisr ro SAIIDYCLAY, predomJ.nanrly l( I sacuraced fine sand L'it,h gravelly zones fur?$iurnsriff ro and gravel/cobbles 1ayers, sEiff tl note: felr sofr ac 241 I rv ; \ H. o S- ..--,<. I l,o

GRAVEL/CLATEY GRAVEL 35

40

Scoppedauger ac 40.0' Installed noniroring r,-ell : Boct,omof pipe ac 40.0' 45 Slot reci ro 37.0 ' Coarse sand co 35.0' ( Bentonice pellers co 34.01

SAHPLE TYPE _t _ A - Augrr conangr. I - Slock toaplr sERGENT,HAUsKTNS & BEcKwr+illoB S - 2" O.D. 1.38'. l.D. fubc roaele. U - 3" O.D. 2.12" t.D. rubc ioaolc. iffi1 JOB NO.1"9-L.193S..1,_ D LOG Of IE5; ECRING NO. B-3 _t RIGTYPE gME-55 -i! 5. q66.\t^ ?va- ts E c BoRINGTYPE 61" ltoll- E: Auger !tt ?o o 5=- :! lrJ o oa SURFACEELEV. tcc iit- Cs a: ::: Oa i: 1S cc. i3i OA a': oaa :e €r tJGC .3!! -i ;; =o OJ =o. =U vtsu^LCLaSStFtcAttox

33.. moisc CLAY with some fine sand, ver]' firn nediun plascicity, dark bror,rn 59 cL.. noCe: sone fine gravel below 50 16 5' T 44 gg 18

noist SANDYCL{Y wirh some gravel, ver:/ firn low plastici.ty to medium to hard plasticity, brocnish gray rith orange and white streaks

slightll' moisr CRAVELLYCLAy wirh some sand, u 100 to moist low plasticity, tan trith some ver-\r firm lighr brown-gray and black o?rard PockeEs --i{c !..{.,c slighrly moisE CLAYEY GRAVELAllD SA-r\D: sub- hard angular, low plasticity, brown-gray with orange pock- ets note: drilling pressure 400-1500 psi ar 26 I to 27,

-11a1-,r1rr- )vt ) saturaced below 39.5' r,o 40t

Scopped auger ac 40 ' Scoppedsampler aE 40.9'

CROUNDwATER OE PTI{ SAfiPLE HOUR O^TE TYPE - _t _ Aogrr curtaag3. I - glocl I :6.9 t6:00 t i-24-8 | - rooplc SERGEI.IT.HAUSKINS ? ?" O.O. 1.38'.r.O. rubo:onplr. :,ffi); A EEC*W#'' U - 3" O.D.2..?.. t.O.,ub- .^--t- a'ngJg! ' - 19919. ES7-j03bn DATE r l-23-E7 -t p15 lypg CllE-55 6:1" Hollow Ste:n Auger -i! 5l c BSRINGlypE '){' a 3s E ?o o rCo A :: suRFAcEelev. 5785.9 -e uo oo 3:: 0 a: t30 :i; C- DATUM }tine a a aa -.i :: a'; i c o ie€ og :U cc. 1o € € >1 .EJ oaa ;o o o :: REXARKS vrsu^L ucs OJ i3! OJ =c 3(J cL^ssrFrcATtoN :{ 2* slighcly rnoist GRA\TELLYSILTY CLAI wich sosre I very firm sand, some organics, lowplas- CL co hard ticicy, dark brown I 63 ls ol

I slightly moisc SAIIDYGRA\IEL with trace co I hard some clay binder, Bap graded, lro low plascicic.v, light brown- ish gray

l5

slighcly aroist CLAYEY GRAI/ELsith soue sand, 20 to uoist low plasticicy' light brorlrt- (l hard ish gray

\

50/3.5" noce: difficult augering below 26' to 28' "l:'l addec rraEe: f rom 26' to 40' .'l Scopped auger ac 40' I Scoppedsaapler ac 40.3' ()

GEOUNDWATER SATiPLETYPE A-12 A - Ag9rr suning3. B - Blocl rcoglr SERGENT.HAUSKINS & BECKWITH S - 2" O.D. 1.38" t.p. rubc rooolr. U - 3" O.D. :.42" l.D. tube ronolc. r((JJEL t cexo._Eg-t:038n orTE = t!;?.i:iZ RtG TYPE , cuE-55LNT,-JJ _= 5k" Hollow Stem Auger 3. C BoRtNGtvpE a Eo c c :ii suRFAcEeuev. 5898'0 2) (Jlo oo -g Mine o ii; 3: C? DATUu f'' r€i a a aa :a 3 o. A A i4€ :e €r 9o E E -i :o o o ;i ;: :J R€rt^RX5 vrsulL cLAsslFlcATloN OJ ;:! OJ JO. J9 iai; '------IrL'- -1il;v' lJEE SANDYSILT wich some gravel, A s zirtt.s" stiff low plasticitY, dark brown lraoderatel)' X, za , *, slighcly moist SILTY GMVEL A!(D SAIID, sub- 5 dense to angular to subrounded, non- v light As 70 ver.v dense plascic, well graded, brownish gra-v v A- s 3r -. t0 rci.st SAIIDY GRAVELwith trace of dense to silt, predorninanclY fine to gravel, subrounded, '.'rttsi: very dense medium ; graY t' nonplascic, Iigbc tanish *ii:X irlll l) '.1#FFiurr 5a

I

:0 ffi l'

2slIE

--

30 note: binder varies from clay co silr below 30'

35 note: difficult drilling; added wacer fron 37' to 47'

40

of moisc SAbIDYGMVEL wich trace 45 l:- well I very dense clay binder, subrounded, t----- graded, Iow PlasticicY co nonplascic, lan, orange and lighc gray I )- .. cRouNowATER sAmPL TYPE , A-13 A - A!9t cutlang.. I - Blocl :cmPb S - 2" O.D. 1.38" l.D. rubc rcnpb. U - 3" O.D.2.{2" l.D. rgbr rcnple. --KIJJ!-, =_-- L9,r ut ii,51 B()ililG n_s .logxo.:37:?91:A -o^t. rr-za-s; NO. _- ps6lyps Cl4-55 _:i 3l il 3 BoRtNG1yp6 6k" Hollow Steur Auger a o A 3s I :o t;!g :t uto oo SURFACEELEV. c \i roo C- o? a :ii aa Dltuu lline ::. 3 J :- - c a ;3i o4 a: C' lo E E :u Se aa -o o o ;i ia ?J cc ('J i:= AJ =o. D|J R€xAnxs vlsu^L CLaSSrFlcATtox sol4 moist SAI.IDYGRAVEL wich crace of very dense clay bi.nder, low plascicity to nonplastic, canr orange gray 55 s0/5.5' and light

60 note: difficult drilling through cobbles frosr 61.5'

65

Sanpler refusal at 65. I I Auger refusal ac 65.51 Installed uonitoring well: Boctomof pipe at 65.31 ( Slocted to 62.3' Coarse sand to 61.5' Bentonite tablets to 57.4'

f:

SA^{PLETYPE I - Ag9or €unaa9.. I - Elocl tono[ r SERGENT,HAUSKTNS & BECKwtfr-l3B 5 - 2" O.O. 1.38" t.O. rgbc rone|r. U - 3" O.O. goaelc. 2./t2" t.D. rubc CHmG€otO*a C.G{€B f,tsJ--| JOBNO. E87-2o?3r O;,;E I l-_10-37 _= ntcrvp: j 5. € BoRTNGlypg 6k" Hollow ScernAuger a a Eo o a g. a E i a suRFAcEelev. 5870.5 , (.it o oo o t ao ii; Cr a-- DATUM UiNE a aa t :: a': ! A oa ;=€ :e €r c- E aa o a4 ?i :J REH^RK5 vrSuAL CL SStFtCATtOll AC ;:! 6J :o. :(J

moisc t,o SAI'IDYGRAVEL, subangular wit slighcly moist some to Crace of s1lC, well a: s 50/5.5,' graded, nonplastic, light grayish brown trt so/3" noce: auger refusal on rock :s 50/4" at 6.5', noved ahegd 6t and resuned drilling note: subrounded and tan X' 43 below l0'

.:- il. le GRAVELLYCI.AY wlCh some sand nediun plasticity, tan

moi.st SAl.lDYCLAY with some gravel, tt LD moderat,ely firn low plasticity, tan

slighcly moi.st GRAVEL, subangular with some very dense sand and trace of silt, well graded, nonplastic, lighc gray

Stu\DY GRAVELwich crace of clay, well graded' low plas- ticity, tan note: augerj.ng resistance alternacing frorn moderaE,e co high fron 35' Eo 44' ; very high aE 441

Stopped auger at 45.0r Stopped sampler at 45.51

GROUNDWATER SAHPLE TYPE OEPTH HOUR O^TE A - Asgoc cvtliagr. I - Slocl :cnole none 5 - 2" O.O. 1.38" l.D. robr rcnplr. U - 3" O.O. 2.a2" l.D. rubr romolc. t -.t - - .L.- -tr-j ?t.!t tOG OF TTST gCRIHG NO. B-7

Ptc TYP F er,fF-q q -i! _t 3t C BORTNG''" ts E :o o t>l:. SURFACEEt.'U. o uo oo ('l;:g lF iitt 3- .7 al. at i: !€ DATUM I\TiNE cl a oa a': ;o Et € ;=i :U JO ot o ai t: :J .jjj (,J ;:= OJ =c. =U RE,{ARKS YTSUALCLlSStFtcATtox -:Fr--

slighcly moi.sr SANDYGRAVEL sirh crace ' i?..i.s of a'.-.I- >< s 5o/4" medium dense Co s1lt, well graded, subangu- $:i:g very dense lar, nonplastic, tt'O:'. GW-Ctt Iight gray F::-t to tan 5 :;i$.i:v jqi,gAs s6 'ffiXs s so/s.s,' sliehtly moist GRA\'ELLT CLAYEY SAND^ srrh to moist rounded gravel, lou plascic- firu to hard ity, tan and lighr tan-gray with orange pockets

20 note: very moist ar 2l' ( T

40

- ooc oo : slightly noisc GRAVELL:-SAI{D, predominancly r5 . very dense fine to medium, slighc E,race of silr, nonplasEic, lighr ( gray

SEoppedauger ar 45' Scoonedsamoler GROUNOWATER ac 45.3' SATPLE TYPE oEPTH I xoun OATE A - Augrr csringt. none 8 - Bloch ronolc SERGENT.HAUSKINS & BECKI^f#5 S - 2" O.D. 1.38" l.D. rubc rcncle. t,W I U - 3" O.O. 2.!2" l.D. rub. ra--r. -- v v. . --. -- Jo8 NO. E87-20jSAD,ATE -:i' ^_r nB \r t\l \J o - (22' Nr or sE,akedlocacion) -; Rtc rYPE cME_55 5. EORINGTYPE a C c ii; Eo o :5: uo oe SURFACEELEV. too :i"i C- a: ('l ! l. a aa :a aii Drruu )tine ::: A oc a':

slighrly moisc CLAYEY GR"IVELLYSAl,tD, mediusr hard co firra plascicity, dark brorrn, tan and browr with some clavev gravel zones not,e: large rock(s) frour 6.5 ' ro 7.5'

t0

sc l5

ttl

: 20 F (

:/%oZot\ S _5

slightly moisr SAI{DY CI-AY AIID GMVEL, PTe- to trois8 doninantly fine to nediugr 30 very firra sand, low plasticity, brown- to hard red note: probabllr volcanic oud t flow I- JJ Scopped auger at 301 Scopped sarnpler at 30' Installed noincoring well: Bottorn of pipe at : 30.2 ' 'toz Slocted 27.2' Pea gravel to:.26.L' Crushed benconiEe ro: 23.9'

I

SAI{PLE TYPE A-16 A - Aggcr cuning3. I - Blocl ronplr SERGENT.HAUSKINS & BECKWITH S - 2" O.O. 1.3S" l.D. rube ronolr. U - 3" O.D.2.!2" l.D. rubr.rcaslr. _= -i! 5. 3c E :o :! uo Cr a? ii; aa :a oA :(J ;4€ -a' a-j ri i:= OJ IO.

moist SAI.IDYGRAVELLY CLAY FILL, % firn (rnaceri.al dozer placed for drill pad)

noist GMVELLY CLAY, Iow Plascic- very fir$l icy, brown

rtroist SILTY SAliD, preciorninantlY dense fine wich some gravel, non- plasticr !3o

slightly Doist GRAVELLYCLr\Y with some sand, low plasticicl' co medium plastlcity, dark brown

CLAYEY SA,r\Dwith some fine gravel, predoninantly fine sand, low plascicity'' brown T and gray slightly noist SANDYCIAY with some fine gravel, predomJ.nancly fine sand, low plasciciry co med- iun plasticity, dark brown to brownish red

COBBLES/BOULDER

Auger and Sampler refusal on boulder at 20r

GROUNOWATER SAUPLETYPE A-I7 HOUR OEPTH OAtE A - Asocr duriagr. B - Bloc& ronPle SERGENT.HAUSKINS & BECKWITH none S - 2" O.D. 1.38" l.D. tubr rcaglr. U - 3" O.o. 2.t2" l.D. tirbc ronclc. Feao r q' I Tnves: ; ' D-lU f ftQJffJ each ".c re o ".,.n tQG Of ]8,5I EOT,ING NO. 1gg ;19. E87-2038Ap116 t2-I5-87 clIE-55 _= Rtc rYPE 6k" -i! E} a BoRtNGlypg Hollow Stern Auger l_l a ts E Eo o G suRFAcE 6051;0 uc o6 euev. o l( l::r C- c-- ---, ---,-- irle :i; !s oATuM a t aa :a 3 a; c A ;f€ oc :U *o € € -r' Sr ;o o o :-j ?a ?J REH RKS vrSu^LcL^sstFtcATtox I'ri:; OJ rr:3 OJ r4 tu moisc CI-AYEY GRAVELLY SAlfD, low f irra to plasticity co nedium plas- \7 hard Elcity, dark brown Z\ 5 .:; A. 47

t0 /\s

li

20 slightly moi,st SAI{DY GRAVELA}ID COBBLES, ( very dense sotre to ttace of clay, lighc gray ( ts

Stopped auger and saupler at 25', extreuely difficult augering 30 InstalLed monitoring weII: Botcon of pipe ac: 25.O' Slotted co. 22.O' Pea gravel to: 21.0' Crushed bentonite co: 19.l'

{ \ t.

GROUNOWATER S^HPLE TYPE OEPTHIHOURIO^TE -r- - A-I8 A - Asgrr cuna693. B - Blocl 3ongle tls7t SERGENT,HAUSKTNS & BECKWTTH none S - 2" O.D. 1.38" t.D. robe ronplo. -,Wel tt - 1" l'.| i. 1.t'r" I n ir.h- ..--r- {lt/KuJtr'-. Ltrtr \.r ra:t Dt-'Xlat(.r N(). D-rr JOBNO.--9J:?03.8I.-DATE i2-1s-87 ,L, _= RIGTYPE 5t C EoRrNGrV"e Eo o rCr suRFACE !oa lt Q'O oo eUev. o tco .l: ::r? oaruu ::! I cl e a': CC. *o EIE :U oaa .o ct o iiili:?: :: REXARTS vrsuAL ro ucc OJ i:! I ii =c, 'U CLASS|FtCATtOt{

slighcly moisE GRAIIELLI CLAY wich some flne CL firn to mediun sand, low plasci.c- ity Eo urediumplasticity, )a to %x, a9 dark brown Eo brovn 5 slightly moisc CLAYEYGRAVEL with some'san4 very fj.rm low plascicicy, brown, lighr gral' anci can l0 GC 48

t5 moist SAIIDY CIAY, predominanrly ooderately firn fine sani with some fine to to firn mediuo gravel, low plastic- tan ?o ity,

slighcly rnoist GRA\IELwich some sand and ilI to Eoist t,race to sotre clay, low I very dense plascicic_v, light gray- ri,, brown ll I 3s l' -' --7/t i {'' s ta I plascicicy, I moisc SANDYCLAY, low moderately firn tan % to very fi.rn not,e: gravelly below loo _%,r: approxiaacely 37'

StoppeCauger ac 40.0' Scoppedsaupler ac 4I.5r lo, noEe: U slighcly moist SAI{DY CLAY uich some gravel very firm predominantly fine sand, low to hard plasticic], brown and tan L7 f,r 3e -at vg 5 sz----. As s2

with sone sand t0 12.- slighcly moist CIAYEY GRIIVEL W.Xias : ls cc very firu low plasticity, brown, Iight _im gray, and yellow r r CLAT with crace of finr t5 7/t- moist SAI{DY -!-'ooj41 soft to gravel, predouinancly fiDe %P+ri firu sand, Iow plasticicY to med- ,2, ium plasticitY'.tan

GRAVELrrith some sand 20 moist CLAYEY ! very firu low plasticitY, brown, light ( I to hard gray and tan '; t: 25 7* noisr GRAVELLY CLAY with some fine plasticitY' tan : lelr firru to hard sand, low 30

Auger refusal ac 31.5' (felt like hard cIaYeY gravel- 35 possiblY mrd flow)

GROUNOWATER -20 sAilPLETYPE _t _ A.: A - Acarr curiagr. B - Elccl romPlo SERGENT.HAUSKINS & BECKWITH S - 2" O.D. 1.38" t.D. rubr romple. :,Ifri, I invesEre:::on \rr .!>l ti\/\l3rv atvo3 ROJECT SeaD Lc:i;h Fac SiEc LU(J' aE7-2038AC.rtE 12- !?-i]7 lB XO. -" RtGTYPE cME-55"i.i -: Auger lypg 6N" Hollolt Scen _:! E} C BoRtNG 7-'t a ts E ;o o 5827-5 I suRF^CEELEV. tlo ;!! :i oo )line 1r 0 Cr o? 9A1gM ;i; aa a i: J oc a': c A i3€ :U 9o E -d -a € ii :a ?l REf.ARXS vlsuALcLASslFlcATlox e c ;:= OJ :o. 39 3r;:OJ with some slightlY moist SANDY CIAY Al{D SILT fine very firm gravel' PredotrinanBly sand' low PlasticitY, brown s 32 and Ean 'Ult 4L

slightlY moisE CI.AIEY SAI{DTGRAVEL/GMVELLT firm to CI"A,YEYSAI{D, low PlasticitY, and tan 10 hard browa lighc $ralr

r5

noEe: verY difficulc aguer- ing froa 17' to 20t, added 20 r"ier to reduce side fric- gion (

/.2/-i , 25 'y'y't -m'','t/1./V .: '.1 rn I

30

35 +%;" --n,' -- -7/r

40 Scoppedauger ac 45'0' Stopped samPler at 45 ' 3' Installed monitoring well: Boctomof PiPe at: 45'2' 4 Slocted co: 42-2' Pea gravel to 40'8q ( Crushed benconite so: 38'6

50 A-2I GROUNDWATER SAtrPL TYPE r oEPrHl xoun I o^tE - cunangt. B - Block ronelc HAUSKINS& BECKWTTH A Augrr {Srj SERGENT. none S - 2" O.D. 1.38" l.p. rube rcap|r. t,wiu lreJl GOanDOo:OFSO.-a cro-c€ u - 3" o.o. 2.r2"t.D. t"ir t.-or.. --+. .l Jaea*. 5^.C. 3t WC CR.€, l.Sat l*ortct' LCG Ct 7E5i BCtIHG NO. b-r'+ IOBNO*Ed7-2038a DATE 1242-87 LXI.-T)cYE-s5 -; RIG TYPE TvpE 6Lr" Hollow Scen Auger -a! :. C BoRlNc a 3sE Eo o c -ii; sURFACEeUev. i^i€: ulo o! lline c C- a-- palgg f a a aa i: 3 oa g A ;3€ :U So c. *r E € YISUAL I aa :a o o a-j ?i EJ RETARX5. CL^SSIFICATIOX o ag c,J i:= OJ =o. D9 0 moist GMVELLY CLAY wich some sand I firu co low plasticicY to medium plascic5.tY, dark brown with 26 very firm X' .I7 and gral' I tan Pockets 5 X,t 32 cL. note: color change co lignt I - - gravel I s 48:- ..- - ro'-:-. grayish tan and less )! frora 7t Eo 13' 10 I t.%

moist GMVELLY CLrIY wich some sand l5 flrn low plasticic-v Eo nedium plascicitJr Ean

20 ('

GRIJEL wich some sand 25 uoist CI-AYEY very firn low plasticitY, tan with some orange zones

30 noce: high augeri'ng rgsis- tance belos 35', added water for lubricasion

and P..tgl ; : : moist, - GRA\IEL ryich sooe sand 35 graded' very dense ttace of c1a1', well low plasticicY' can' orange and lighc gral'

40 SEoppeciauger ac 45.0' Stopped samPler at 46'5' Inscalled ooniroring weIl: Bocton of PiPe ac 45'5' 45 Sloct-eCro: 42 .5' Eo: 4l '4' .i':. 7'rg+--r Coarse sand I Benconite Pellecs ag: 39'8

GROUNOWATER sAilPLE TYPE N-22 OA?E O€PTH HOUR A - Avgrr curi.gr. B - Elocl roaplr lE'jJ SERGENT.HAUSKINS & BECKWITH none S - 2" O.D. 1.38" l.D. robr rcnplc. -,l.y''li .. -..^A..a.. lh..,t-.-__l- tv gtl GTEGX''EO'GA C|...CTS lieap i.=acn i.:: 5:.r. : rsvesiJ,gdLlv\n !-rJ *pOrnvJbv tECl LOG Qt r&>l E()tit(G lrag. . a--av-v y6g 1q9. 887-203u.lOay6 l2-I0-tl7 a _t RIG TYPE- j :t c 8ORING a ?o o c : i SuRFACE""ELEV. 6138.3 ;53 lJo oo o Cr a? tgo a a :ii DATUM aa :- a oa i:: c A i4€ :U Sr {; CC' 1o € E -i oaa :o o o t-j oa TJ REHARI(S vltU^L CL SStFICATION uGa OJ ;3! OJ =c =U :t:i; - slightly moist SAIIDY GRAI'ELwith trace of very dense si.lt, predoninancly rnedium ,#i!{, gravel, nonplascic, lighr grayish tan J _*'"v^ a\D )z Lt I moisc SAl.lDYSILT AND CL{T ' predom- very firn inanrly fine sand, low plas- ! ticity, broun 10 slightly noist SANDYGRAVEL ttith slighE dense trace of fines, predominant- I ly flne to nedium sanci and uediun gravel,. nonPlascic' orange and lighc graY ti l5 Ean, i note: heeq' auger chaEt,er ti fron 17' 20 llI :-3O tl(

I I ,ry .l ,JJIJJ slighcly moist SAI{DY GS.IYEL with sorne claY ' z) very firn predorainantly fine to medium :3-Q I3 a 'ffi sand, 1or,'plasticit.v, brown I to hard

i and. tan

I

30

Stopped auger at 29.5' Stopped sampler aE 31.0' 35

I ;

GROUNOWATER SA,{PLETYPE. _r_ A-23 OEPTH HOUR D^TE A - Asga GU6r6e3. B - Slocl rompie {Al SERGENT.HAUSKINS & BECKWITH none :.- i::9-9.1.T:::.?.:"f-::::l:. -,wel, ':i-T ./-eacn rPRO he3., r'iiO b:-:e r IrvesC iss: .].On tcc of IEST EcRtNG NO. ts-r6 JOB NC._E8-Z4S8ADATE | ?_r6_87 p16 -.; 1yp6 CME-55 -:! :. C EoRrNGrVee a 3-- E Eo o ''-' c suRFAcEeuev. 6006. I :t u|. co o C- c7 | a a :i; !s DATUM Mine ;:c aa i: a q oa a': to €c € ;4+ :U S. :o o o ri oa ?J RET^RXS vtsu^L oj;i OJ d:= OJ =s tu cLAsStFtCATtOX I t-- I slightly moisr SAIIDY CLAYEY SILT wi.th sone llll I hard fine gravel, low plasticicy, tlti;V .-YL iAs 62 -ll-- light brown 5 slightly sroisc SAIIDYGRAVEL stch some silr, o{ very dense nonplastic, brown

10 moisc CLAY wich sone fine sand and firn gravel, oedium plasticlty, brown

l5

20 GRAVELA}ID COBBI.ES --j //t'-s.5o/-4j:i____L-:Ll ( uoist GMVELLY CI.AY/CI.AYEXGMVEL hard with sone sand, 1ow plascic- r---'/l: ity 2 ,

30 =r=

Stopped auger at 30.0r Scopped sanpler ar 30.2' 35 Installed nonitoring well: Bottom of pipe ar: 30.3t Slotted ro: 27.3' Pea gravel to: 26.L' Crushed benconice co: 23.9'

GROUNDWATER sAI{PLETYPE ' ffi _t _ .^-2+ A - Avger cuatialt. 8 - Elccl rcnelr SERGENT,HAUSKINS & BECKWITH I lnone I I S - 2" O.D. 1.38" l.D. rube roaote. t,ffi|, - lr-"..Oi 1t7.. In rfih.U - ,rr' weE, CLAI wich some sand and I :ilt-..i soft gravel, medium plascicity i*:'j

30

Scopped auger ac 30.0' saurpler ac 3I .5 ' 35 Stopped noEe: atcempced to install monitoring well, benEsnite pellets bridged within auger and caused pipe to PuII uP' well was aborted and PiPe wichdrawn

I \ I a

WATER GEOUNO SAMPLETYPE A- xOun 9Ep-x I O^TE A - Avgcr Grrniogt. I - Elock ronclc none S - 2" O.D. 1.36" l.O. lubc ronpb. U - 3" O.D.2.{2" l.D. tvbc rooelc. L\J\t rva rA-l I)\r{rfl\f (\l\r. e ^e

p16 CME-55 _= lypE 6k" Hollow Scem Auger :t C B6RINGTypE a :o o g suRFAcEelev. 5944.0 (rc oo c a? DATUu )line a a :: I a': ir' g ,,, a :U 3o E E €r :o o o iiflii oa =J RE|rARXS Yrsu^LcLAsstFtC ttOx a;:i OJ i:! | ;i =o, 3U I'C E SAI{DYSILT AND CLAY wirh \ soft roots and organics, low plas I \ tlcicy, dark browr X' 84/11.5" 15 5 slighcly moisc SAI{DYCLAY A}ID SILT wich CL-ML At 43 22 to moisi trace to sone gravel, low verv firm plastici.ty, lighr brown

10 T

sllghcly moist CLAYEf, GR.tt/EL with sooe sand very dense well gradeo, subrounded, low plasci.city, tag, orange 15 note: high augering resis- :tance on rocks froq 17t co I8 uoved 12' east and continued 20 with new.hole

( moist CLAY wlrh soue fine sand and firn gravel, low plasticity co './/,: uediuo plascicity, can =%= t. ///., ,.n. lZ 87 i 20 i I t % I 30 S -69- -- ; - -.- --GI{- slighcly moi.st SAI'IDYGMVEL wich slighc very dense trace of clay, well graded, light tan and gray

35 Stopped auger at 30.0' Stopped sampler at 31.5'

GROUNDWATER SAMPLE TYPE oEPTHIHOUFIOATE -' - A=26 A - Aogrr ccttangr. 8'- Elocl :onp|r r[$*]r SEHGENT.HAUSKINS A BECKWIIH S - 2" O.D. 1.38" l.D. rubc ronelr. -lHl- U - 3" O.O. 2.a2" l.D. tubi rooolc. tV'Blt m**ftca.-EsG irROJtLr.-= ,.. \v\J va rt-l &\r,(.tfl\, !-'., I:i-20:.:eOAfE_ tNVo ,Orng. -; RIGTYPE -i! !r BORINGTYPE- s C a 3s E :a a r€r A =: SURFACEELEV. (rc co c :i 3:3 9 C- a: t!a a a ii; aa DATUM i: a: 3 e oa c :u 3r : c. 3o € E i3€ -.. caa .c c o L4 i: ?J RElrARXS vrsuALcL SS|FtCATtON i,,JAC OJ i:! OJ =o. f(J

:-:-- : - :. ;li I,ti tltillllll i I ti,!i

I I I I OT DRILLED

(' F I !l I

it, - li

( rl

GROUNOWATER S^TPLE TYPE L-?7 oEPTH I HOUR OAIE A - Augrr Gutti.gr. I - Slocl rooolc I SERGENT.HAUSKINS & BECKWTTH S - 2" O.D. lJg" l.D. tobo rompb. U - 3" O.D. 2-a2" l.O. tobc ronclc. coaaEcGcoltc€{ cKeG I NO.--E8-Z=203,54DAT E i?-14- -c7 p16 Cl9-55 _] 1yp6 :i 6L" Hollow Stesr Augsr .i C BoRtNclypE a Eo o c EJE SURFACE 5768.9 :t uo oc ELEV. ir''EEl i Cr a: Mine :: lc o I. e :i; ortuu \ \- I a a aa ia a: C'IJ A A if€ oa :e E E c o ;i i: ?l REfTARXS YISU^L CLASSIFICATIOX i-jl;; ;:= OJ =G =(J U slightly uroisc GRAVELLYCLAY wich some sand to moist low plastici.ty ro medium very firn plasticicy, brown r3 to hard ) fr? . tq .v!

note: color change to light graylsh brorm and whire at 8 0 to 9t ,LJ-

- -' i--:- ,%%y slighcly moist CLAYEtr SAI{D with Erace to :l 5 t/- to oolst sooe gravel, Iow plasticity vt ^a .-.-l )l plasticity, ia very firu to mediuu brown {Je. I co hard rith sooe light grayish i.il i I pockecs I broqm !l I I !0 )aJ 4 SC

\! t-i T_- 5 -..t{- ffi I I

|0

Stopped auger ac. 30.0' Stopped sampler ac 30.8' r5 Installed monicoring well: ! Bottou of pipe ac: 30.0f Slorred ro: 27.O' Pea gravel to: 26.0' Crushed bentonice to: 24.O

I I I

GROUNOWATER AI{P TYP A-28 A - Aoger cuningi. I - Elccl ronple SEFGENT.HAUSKINS & EECKWITIi S - 2" O.D. 1.38" l.O. rubc rcosh. t,w), U - 3" O.D. 2.a2" l.D. tubc rooelr. - - . - -rr ^ ^ .L _ _rr,J U

rl F I F I -:r ll I l F -'-- r! l'

GROUNOWATER SAMPLETYPE oEPYHI xoun I oete : A-29 A - Aogre cuftangr. 8 - Elcal :6nelr :l<-.}t SEFGENT,HAUSKINS & BECKWITH S - 2" O.D. 1.38" l.D. rubg.ronolr. ;l:fi^|. U - 3" O.O. ?-12" l.O- rubc roaolc- lV Oll . Let et lt>; EORIHG NO. b-zl cME_55 _t Rlc rYPE _!i :l c EORINGTYPE a 3s E ;o o a SURFACE :5t uo oo CUEV. Cr o-- ,ao a :i; aa .: :: a: :: a i3€ oa CC' E -d :(, €r caa o ai t: TJ UCE i:! OJ :o. :U vlSuaLcLASStFtcATtOx

moisc t,o SILT AIID CLAY crich some fine slighcly moist to mediun sand and trace of firn co hard grairel, low plasticity, lq dark ML-CL brown

's'-sr ', i i r,.. --i-z2.j--Gc' sllghcly troist CLAYEY GRAVELnirh sone sand, hard low plasticity, brown

moisc CLAY, sooe fine sand, crace firu to of gravel, uedium plastici.ty, % very firu light brown 20

( slighcly aolsr CLAYEY SAIID with sone co to aoist trace of gravel, subangular, very firu predonj.nantly fine to uedLum to hard sand, llght gray and whi.re

Stoppeil auger ar 30.Ol Stopped sanpler ar 30.3f Inscalled monitoring well: Boctom of pipe at: 29.9' Slotted to: 27.0' Pea gravel co: 26.O' BentoniLe pellets to: 24.0' ii

GROUNOWATER SATPLE TYPE A-30 - A Aogcrcufrrng3. B --8tocl ,o-pl. ,fFb, SENGENT,HAUSKINS & BECKWITH 5 - 2" O.O.1.38" l.D. rubr rcostr. :ll){^| - U 3" O.O.2.!2" l.D. rubc :oaotc. lY_6ll GrE@ry{ a*-rG F87-i03i tQG OT TESTBORING .loaNo. NO. - B-23 _= RIG TYPE o{E-55 -:i :. EORING a ts E Eo c TYPE Scern rCr a -: o o 3: g :t UO oo SURFACEELEV. t3c ii; Cs r? .::-' J aa ia j€ DAT c a': CC' ;ri oc :U oaa C OO- UGC o o-I! -i ;: :o OJ ro. >9 YlsuALCLasslFtcATtOx

molst to CLAT wich trace of fine sand slighrly moisr V and occasional gravelr fl€d_ firn to hard As. 16 iuur plasticity co high plas_ X U l5 JO.. cicic)r, brown and E.an I t Jto I I Itt I

I slighrly moisr CRAVELLYCLAY wirh sone itol very firrn low plastlcity co medium to hard plasticicyr tan with brown, tr I orange and light gray

s; 33

very noist CI"AY wich some fine sand co moist and occasional gravel, med- moderatley firn iun plasticity, brorm - -rj8-* - to firur XJA-

q qn /<

SA^{PLE TYPE - A.ugrr gtoct | cuniogr. 8 - ronplc to - ,[T?f s 2" o.D. 1.38" l.D. tsbo ronote. -t-Lr t. sERcENr.HAUSKTNS r ,..**fiit - u 3" o.o.2.r2', j.o. rvbc roaorr. il,/'8h L\r\, \,/f r.Art DvAlnl\r N\lo - -J

p16 _= lypg cuE-55 -ii 5. 5k" Hollow Steu Auger C BoRtNGTvpE a t€ E :o o 4 sURFASEelev. Approxinately 5920t5 :t l|€ oo C- a-- ltine a :ii 911gM at :: A ;3i oc :v a'; E o ai i: tJ vrsu i:! OJ :o. 3s L cL sstFtcATtox

! I CL

noist wich sac- SAI{DY SILT AI'ID CLAY, low 50/5.5" urated zones plasticicY, brown stiff to hard note: sanple aE 54.5' was sacurated (but no water on -'- - drill rods) ' ML"- ':X. sLsolz-s:::-lJ:-_ i ! i ! a

not,e: drilling resistance alternates froo very high to moderate frou 59' co 67 |

moist to CI.AYEIY GRA\IEL Al{D SAI{D' sub- saturated angular, well graded, low hard plasti.city, tan' orange and % pink

Stopped auger ac 74.21 Stopped saupler at 74.71 note: attenpted to install uonitori.ng well; unsuccess- full because bentoni.te pel.lecs bridged wiqhin augers

':r

GROUNOWATER SAI{PLE TYPE OE PTH XOUR O^TE A-3 IB A - Aggor cuniogr. I - Slocl roaplc SERGENT.HAUSKINS & BECKWITFi S - 2" O.D. t.38" l.O. tubc :onple. il a..A r^ .,,!--__-t- af f\v,-Y I + , .--r >y4..\\t rrtVo JoB NO.E8;-20:i$-:. DATE t2_n5_87 | -; Rtc rYPE cME_55 -i! g c EoRrNGlvp i a ts E o a ,i | :i SURFACEELEV. I :5t € oq tco a a iii aS orruM ::: c c i3€ :j a: 3o ;l | CC' E E oaa :c o o r-i I i: EJ vrsuAL I UGg |,J ;:t oJ | :c 3U REl|^RXS CL^SStFtcT|OX

zFF very moist CLAYEYStu\D wich some gravel mediun stiff predorninancly fine to med- iun sand, lorl plascicity, dark brown 5 30 %X' noist SAIIDYGRAVEL with crace of cs mediun dense silt, subroundeci, well %,Xu 24 graded, nonplastic, tan l0 - .V Y',- .- --uu-jr-.'---

moist SA,NDYCL{I with trace of uoderately firn gravelly zones, predominant- t5 co firn ly f i.ne sand, medium plas- ticit]" Ean

with \ noist CLAYEY GRAVEL some sand 20 low plascicicy, tan with gravel zones \t"' ( moist SANDYCIIY wicb scattered firu gravel, neciium plast!.city, I brown note: approximately 5" gravel la1'er ac 27'

3C

noce: alcernatlng clay anci. gravel zones frorn 33' Eo 421 35

40

moisE CLAYET GRAI'EL wich some ver;- firn sand, 1or"'piasticicyr g!€€o- tohard- A- ish brown *HtQ Jo''o' \ Scoppedauger ac 50.0' Stopped s:rmpler ac 50.4 '

GROUNDWATER SA^{PLETYPE A - Augrr curtingr. I - Bloc! ronplq SERGENT.HAUSKINS & BECKWI]H S - 2" O.D. 1.38" t.D. rvbc ronolo. U - 3" O.O. 2.12" l.D. robj roaote. I Pi\vJ:L I tOG OF TE5TPII NO. TP.I JO8 NO. FF7-?ti8A OO* CaterPillar GROUND BackhoeTyot 235 : WATER - oE?n{ HOUR OAIE 16g61;6nPad No. l, See Site plan not encounE red Elevario

SILTY CLAY, 1ow plasticicy co medium plasric iEy, trace of gravel, dark brown

CLAYEYSAllD, predonipantly fine, some gravel occaslonal cobbresr low plasticicy

CLAYEYSAIID A]ID GMVEL, occasional cobbles, low plascicity

SILTY SAI'IDAI.ID GRA\IEL, gravel to 2'f , occa- sional cobbles, nonplastic, brown

l! '|,

Endof resr pir ac 22.3'

SNMPI.E I.:IPE I D - Dish:rbed BuIk Sar.ole e-3: - SERGENT.HAUSKTNS nt-!._L-J ^__tt B__ F__. G2, & EECKWITH r PROJELI LUg Vr lcll rlr l\\J.

BackhoeType CaterPillar 235 -

O€PIH HOUT DAIE Lo..rion noE ncounEe ed Elevation Snen (!) Ioi s'l: Datum SILTY CL,{Y wich sone sand and trace of I gravel, low plascicicY, dark brosn

brown I o SILTY SA.tlD, fi.ne, nonplastic, o o I o I SILTY SAI{D, fine, nonplasti'c, light brown I

SILTY SAI{D, sone gravel' occasional cobbles' I nonplasti.c, light brown

SILTY SAl.lD, fine, nonplascic, brown

It q? i.

End of test pit ar 22-2'

SA},IPLETIPE I A-34 D - DisUrrH Btrlk Saple f-r SERGENT.HAUSKINS & EECKWITH Elaa Sann'le -1'A f|1\rrJi-e| -- LOG OF TEST?IT NO. JOB NO. EE7-2038A 9ATE 09-24-87

GROUNOWATER Eackhoefype Caterplllar 235 O€PTH HOUT o^lg 1o."1;on Pad No. 1, See Sire plan n.lr Lcounte ed Elevatio Site Topo

YtSUAtCtast;tcAtroN

CLAYEYSILT wich sone sand and crace of gravel. low plasticitv. dark brown

SAI{DYCIAY, uediuu plastj.cir}, Iighc brown

SILTI SAIID AIID GRAI|EI",gravel ro 3',r occs- sional cobbles, .nonplastic, browr

SILTY SAIID AND GRAVEL,gravel !o l,', occa- si.onal cobbles, nonplastic, brown

SILTY SAIID AND GRAIfEL,some cobbles, non- plastic, broun

End of test pit ac 24' SAMPI.ETI"E I - tulk A-35 !q Pi"ur"bed Saple SERGENT,HAUSKINS & EECKWITH _ hs-L.-L^,

Backhoe CaterPillar 235 GROUNOWATER fype o€Prx HOUI OAIE to."tion n.|t nanttnl'a 'eA Elevation 5Qa0 Dalum

I i CLAIEY SAI{D, some gravel, medium plascicicy, a dark brown I

SILTY SANDAllD GRAVEL, gravel co 4',, occasional cobbles, nonplastic, lighc broun

SITLY SA\!D Al[D GRA\IEL, gravel to 6" with cobbles, nonplascic, brown e

l0 (

SILTY SAND AND CRAVEL, gravel to 2", occa- sional cobbles, nonplastic, brocln

( End of tesc pir at 22t

') SAMPLETIPE I A-3(r D - DisturH Bull

CIAY wi.th some sand and gravel, medium plasticity, dark brown

SILTY SAltD, fine, some gravel, trace of clay low plascicity, lj.ght brown

SILTY SAIID Al{D CRAVEL, gravel to 5", occa- sional. cobbles, nonplastic, brorrn

CLAYEYSILT, trace to sotre f i.ne sand, plasticity, light brown

Erid of test pic at 23'

SA},IPIJTl"E I A-37 D - DisUrrH Bulk Sryle STRGENT.HAUSKINS & BECKWITH S - DisUrrbed Sralt Bag Sarole -ffi:r Grr6@G6{ CS{EG .l rxlrJ c'- I { rcc oF TEsiPtT NO. :t-o JO8 NO. 09-24-8; Beckhoettp" GROUNOWATER I OEPIH HOUI DATE Locafion =5 noc lCOUnCe o: ed El"r"tio. :: Site Topo 'a: r.rrrrra I f r,,

l SAI'IDYCLAY wich occasional gravel and cobble hieh plasEicitv. dark brown I I I

SILTY SAI{D ANDGRAVEL, gravel to 5", occa- sional cobbles, nonplastic, brown

SILTY SAI{D A]{D GRA\aEL,gravel to 3", occa- sional cobbles, nonplastic, brown

'f, I ? I I b I ir

End of cest pit at 221

SAMPLETPE - I A-38 D Disb:rH Sull( S41e SERGENT.HAUSKINS & EECKWITH S - Disturbed SreIL Bae SanDle -m, !fXL/J l-l --'-:r:-- LUG (JI IE5i PI' NO. JOB NO. FA;-?niRA OATE 09-29-87 Backhoefype Cateroillar 235 GROUNDWATER No. Site PIan O€PIH f{out OAIE Pad 3, See noE 3ncount red g1",r"1;6,., 5890 (t) p61urn Site ToPo vrsu^t ctastrK^troN

SAIIDYCLAY with scattered gravel and.cobbles hieh plasticity, dark brown

SILTY SA}IDY GRAVEL, occasional cobbles, nonplastic, light brown

SILTY SAND, predouinantly fine, nonplast,ic, brown

End of Eest pic at 20.21

SAMPIJTt"E I A-39 D - Disturbed tsulli Sanple SERGENT.HAUSKINS & EECKIYITH S - Distrrbed SnalL Bag Sanp1e -ffi:, tCG OF TESI PIT NO. rl -o JOBNo. E87-2038A pals Caceroillar GROUNOWATER Eackhoefype 235 DEPTH fiout OAIE Lo..tion noc 3ncount red Elevation 6l 5O Sice Topo

SILTY CLAY, low plasticicy ro medium plas- ticitY. dark brown

GRAVELLYSAI{DY CLAY, high plasciciry, brown

SILTY SAIID AND GRAVEL, gravel co 3,', occa- sional cobbles, nonplastic, brown

SILTY SAI{D A}lD GRAVEL, occasional cobbles and boulders to 3r, nonplastic, brown

SILTY SAI{D AIVDGMtfEL, rrace of clayr Don- plastic to low plasticity, brown

SAI,{PLETPE - I A-40 D Disarrbed BuIk Sarole SERGENT,HAUSKTNS & EECKWITH S - l.\i<{.rrh6/ eql1 El-'- (:*]o -1"4' JOBNO. ;:A?_?.^,iRA oare 0g_29_97 EackhoeType Cateroillar 235 GROUNDWATER DEPIH HC'UT OATE tocarionPad No. 2. See Site Plan not tlcounte :ed Elevario Site Topo

vlsu^t ct^Ssrflc^rtot{

CLAYEYSANDY GRAVEL wi.ch cobbles, Iow plasticit.v to nedium plasticity, dark bropn

SILTY SANDAND GMVEL, plasric, light brown

SILTY SAND AIID GRA\IEL, gravel to 2", non- plastic, brown

SILTY SAI{D, mediuu fine, trace of gravel, nonplastic, brown

End of test pic at 20.3

SAI,IPLETTPE I A-4 I - SERGENT.HAUSKINS & BECKWITH D DisArrbed Br:lkSa.oie -L,/al'ffi, gal S - Disturbed SrnaIl Sarole *.v<4du '**3G IOG OF TE5TPIT NO. JOB NO. ,E87-203SA na16

GROUNDWATER BackhoeType Cateroillar 235 OIPTX HOUN DAIE noc encount rred

!l SILTY CLAY, rtace of gravel, nedium plasri:_ ity, dark brown ilrl SILTY CLAY wich some fine sand, trace of gravel, high plasticirj, brorrr

SILTY CLAY, trace of gravel, low plasrlci.t3, brown

SILTY SAr\D AllD GM\|EL, nonplastic, brown

SIMPLET1PE I D - DisturH B:lk Saole SERGENT.HAUSKINS & EECK\{ITfi-i: F -1"4 tgg NO. ;s7_?i'tii i Oafe 09_30_97 BackhoeType CacerPillar 235 GROUNOWATER Plan O€PTH rKtut OATE 1o."1;o,.,Pad No. 2, See Site (t) Iv' noc encount :red E1.r"116n 6030 a Site ToPo ,o Datum o _o vrsu^t ctastftc^noN

SAl.lDYCLAY, sotre gravel and cobbles, high plasticicy' dark broun

SAIIDY CLAYEY GRAVEL' gray cobbles, nonplas- tic, lisht browa

CI,AYEYGTAI/EI.LY SAI{D, occasi.onal cobbles, low plasticity, dark brown

End of test pit at 13.6'

21

! SAMPLEIIPE I D - Disturbed BuIk Saole r sERGENT.HAUSKINS & EECXWIA-43 S - DisArrbed -m SnaMag Sarole tv!- l-,t rCJl l-lt l\\rf. JOBNO. Ec7-3036.; DA1E EackhoeType CaterPillar 235 GROUNDWATER O€PIX r|out OAIE 1s661;enPad No. 2. See Site Plan noE ncount€ :ed g1Ey31;en 6050 (i) -.: pulr''.' Site Topo 'v"--I:t

GRAVELLYCLAY wich sone cobbles, low plasti.ci.ty,

CIAYEY SAIIDY GP"AVEL,occasional cobbles, low plasticit.v, brosn

SILTI SAIID, Erace to sone gravel, occasional cobbles, aonplastj.c, brown

SAI{DYCLAY, considerable siLt, some cobbles, low plasticity, brown with nottled white %

SIMPLETTPE I A-t+4 D - Disbrrbed BuIk Saole SERGENT.HAUSKINS & EECKWITH Q - l.liaJ-rrr€J eEl1 O-- So;f o -m, !.rJL\.1 --- LL/\, U|- t!,)| flr Nvl. I 1-20-87 I NO.;87-20:Si DAT€ BackhoeType CASE 580 C GROUNDWATER D€PTH HOUN DAlE 16661;e6 See Site Plan Elevati :(z none lfina Datum "-"- so, vrsu^t ct^ssrflc^noN

very moist CLAY rdth some sand, nedium plascicity, dark soft to brosn nediun sriff uote: several roots to 8" depth

moist SNDY CLAI, wi.th sone gravel, nedium plastic very sri.ff ity, lighc brownish gray

note: grading to clayey gravel and sand at, 5.5'

Dote: grading Co sandy clay, uedium plastlc- ity

test pit at 9.0r

SA/vlPt^EWPE I A-45 B - UndisturbcdElock Samplc t SERGEI{T.HAUSKINS & EECKWITH D - DisturbedBulk Sarnple m LU'J (.ll liSr fll NO. L)-a JOBNO. ;8;-20354 crie l t -20-t7 - CASE 580 C GROUNDWATER EackhoeType See Slte Plan O€PTH fioun OAIE Elevation l:, It none

very noi.st to 6" SAIIDYCLAY with r,race of gravel, low plasric- then ity, brown slighrly noisr 7 f irrn note: snall rooEs t0 8" depth %

SILTY SAI.IDwith sone fi.ne gravel, well graded, nonplastlc, browa

note: Eore gravel below 7.5'

End of test pir ar 9.5r

SAAAPE TYPE I 8 - Undisturbcd Block Samplc SERGENT.HAUSKINS & EECKWIT#-46 D - Disturbed Eulk Samole -FA )8 NO. E87-2038A DATE r i-20-5 7 BackhoeType CASE 580 C GNOUNOWATER O€PIH '{OUR OATE tocati See Site Plan .( s none Hine 3 l. o !l 1:O

uoisc SILTY CLAY with sone fine sand, low plastic- soft to ity co medium plasticity, alternating dark uediuu stiff brown and brown note: sruall roots co 3" depch

very uoist CLAYETSILT wich.soue fine sand' mediuu p soft tl.cityr dark brown

uol.sg SAI'IDYCRA\IEL lrith slight trace of clay, sub- uedluu dense rounded, well graded' orange-brown

End of test pit at 11.5r

SAAAPTEWP€ I B - UndisturbedElock Samplc SERGENT.HAUSKINS & EECKWITH D - DisturbcdEulk SamPle' -ffi:^ TOGOF TE5TPIT NC. JoB No. iE7-20384 DaTE BackhoeType cAsE 580 C GROUNOWATER ---caa $igs PIan O€PTH XOUT OAIE Locafion

.: a none o .o 6J

moist SILIY CLAY with sone sand and occasional soft to gravel, 1or,' plasticitv to mediurn plasticiry, moderately firm alternacing brown to dark brown. note: snall. rooc,s t,o 5" depch

slightly moisr GRAVELLYCLITYEY SAI{D, low plascicity, dark moderately firn browu

note: less gravel below 7'

uoist SILIT GRAVELLY S&\D, pre

End of test pit aE 12.31

SAAAPTEWPE I A-/r8 B - UndisturbcdElock Sample SERGENT.HAUSKINS & BECKWITH n - h:....,L-J o,.lt, <'a^f- -1"1' L9v. Ut_ rE5t Pll NU. v!--J JOB NO. FR7-?O?8A DaTE EackhoeType CASE 580 C GROUNDWATER O€PTH HOUi I OAIE 1o."11on See Site Jlan Elev none

hret GRAVELLYCLAY Al.lD SAIID FILL, low plasricicy urediun sriff to aedium plasticity, orange-brown

aoist SILTY CLAYwlth some fine to nedium sand and uoderat,ely flrn gravel, low plasticicy to eedium plascicity, brorn co dark brorlrr note: roocs frou 1.5' to 2.0' depth ,%

r0 ( uoist SAIIDYSILT, 1bw plasticity, orange-browr moderaLely fi.rn

SILTY CLAY wlth soae flne sand, medium plas- moderarel,y fira tlci.ty, brown

End of test pit at 12.3r r5

SAAAPIf TYPE I I - UndisturbcdBlock Samplc SERGENT.HAUSKINS & EECKWIT'f-4, D - OisturbedBulk Samolc -ffi I NO. E! i-1C36; palg il-20-87 EackhoeT cAsE580 c GROUNOWATER O€PIH I{C'UR OATE 1ss61ie6 See Site Plan Elevati none Da vrsu^t ctastfrclroN

ooist to SILTY CLAY with sone fj-ne sand, low plastic- slightly moisr ity co medium plasticity, ligrh grayish b firn note: snall roocs to 5" depch

sllghtly ooisr CI*AYwich some sandr gravel, and occasional very flrn cobbles, uediuu plasticicy, Ilght grayish brown with white streaks

uoist CI.AYEYGRAVEL AllD SAlCI, low plasticity, ligh very firu broun

End of test pit at 10|

SA'IPTE WPE I A-50 8 - UndisrurbedElock Samplc SERGENT.HAUSKINS & EECKWITH D - DisturbedBulk Semple -ffi:, oo.glnll cGcFCo-ca c.a..ccr3 CASE 580 C CnOUr.rOWAIER BackhoeTypg o€Prx HOUE OAIE Locali See Site PIan

none

slighrly uoist SILTY CLAY with some sand and rrace of grav6 very firn low plasticicy, brown note: sroall rooEs to 24" note: gravelly with cobbles below 3r

slighrly moist SAI{DY GRAVELeith soue sllr, subrounded, nedium dense plastic, browr to dense

SILTY CLAYwith crace of fine sand, low plas ticity, brown

End of teit pit at 12.3'

SATVIPLEfYPE I I - Undisturbed Block Samplc r SERGENT.HAUSKINS & EECKWITHA-51 D - Disturbed Eulk Srmple -ffi tvg 9l lLJr I la r!v. ,OB NO. ES7-203SA p46 I I-2r-a7 EackhoeType CASE 580 C GROUNOWATER D€PTI{ lrout OATE Lo.atior, (, z none Ili na {,.o Dafum .:o vrsu^r ct^lslflcAtloN

lDoist SILTY CLAY with sone fine to trediutr sand, moderately fj.ra plascicity, dark brown note: saall roots and organics co 4" depch

not,e: color change to brown to orange-browr ar 3.5 '

uoist SANDYSILT with soue gravel, low plasti.cicy uoderacely firu to nonplastic, orange-brotfir

Doi.st SAIIDY CI.AY with soEe gravel, low Plasticity, moderately firn orange-brown

End of tesr pir ar 10.2r

SA,lPtE TYPE I A-52 I - UndisturbcdElock Samplc SERGENT.HAUSKINS & BECKWITH D - DisrurbedBulk Samole -m, eoalE GE

SAI{DY CLAY, predourinanrly fine co aedium sand, low plascicity, dark brown with roots and organi.cs

slightly moisE CLAY wich sone sand and hard scattered fine gravel, low plasticity to nediurn plast ity, browa and can

Stopped auger at 10 t Stopped sanpler at 11.5f note: drilled tvo 3.S-fooc deep percolation test holes approxj.nately 20' East and 20' West of PB-l

GROUNOWATER SAI{PLE TYPE OE PtH HOUR DATE A - Augrr cuni6!r. I - Elocl rcnplo I SEFGENT.HAUSKINS & BECKWITI{ none S - 2" O.D. 1.38" l.D. rsb. rcnrlo. U - 3" O.O.2.a2" l.O. tubr rmplr. coatrFS oaolto.cr cr€..aCt T - 3" O.O. ilria.rclled Sholbv rubr. 39 p6. ic7-29?8a9a1s 12-21-87 RIGTYPE clrE-55 BORINGTYPE 6L" Hollow SEemAuqer a , C a SURFACEELEV. 5617.9 l.z t o o c t c c D^TUM- C 2 a c a a VISU^L c CLASSIFICATION

SANDY SILT AND CLAY with .l several roocs and orgaEics, ov . \t- -F low plasticity, dark brown : As- s6-

; s-28 l0--- GRIVELLY SILTY SA:\D, well graded, nonplastic, lan, light gray and orange

tt CLAYEY GRAVELLY SAI\D, sub- !.i:. rounded, low plasticity, orange brorn

Stopped auget aE 8.5f Scopped sanpler at 9.5r note: drilled two 3.5-foot deep percolation tesc holes apProxiuBce1Y 15f north and 15' south of PB-2

GROUNDWATER s TPLETYPE OEPTH I{OUR OAtE A-54 A - Auger cuniagr. 8 - Slocl ronplr SERGENT.HAUSKINS & BECKWITH none S - 2" O.O. lJ8" l.D. tobe rcnclo. U - 3" O.D.2.42" l.D. rcbe rcnglr. oo.llEa oao|to-r cxnccll a.e'ar.l\G5r. {r.O.aE./€. 5^.C. !\t lsA Cn.O' t O T - 3" O.O. rAio-rcllcd Shclbv rubc. XO EST-2038eOel= cuE-55 RIGTYPE _= Stem Auger 1yp6 6k" Ilollow ji E} C BoRtNc :o a 3 -3 6263'5 A SURFACEeUev. ':! :6 uo oo UiNC o o? DATUM :i; aa a a :a :3 oa rZ c A ;3i :U Sr -.: 1o E E oo= -i vttuaL cLatslFlcATlox =o 0 o ;i t: tJ REX^R(S 0J 6 ;:J OJ =G 3U

! 0. t fi/^y'o1i [loist GRAVELLYCLIYEY SAND; sub- I angular to subrounded' Iow 1 dense EO t plasticity' tan co orange )

\i7 X

GROUNDWATER SArrPTErYPE -r- f.55 A - Aggrr Gsatinit. B - Elocl ronplo S - 2" O.D. 1.38" l.O. rube ronple. U - 3- O.D- 2.a2" l.O. lube rcnPle. T - 3" O.D. r{ria-rclled Shrlby rubr. aav,-- -::- ..:--:_ NO__9S ;-z'- --.raOl; = !2-29-8, lOg uft-rr = RrGTYPE 1*-ss , 6t" Hol1olt Scem Auger 3: C BoRtNGlypg a ;o o 6 145.0 !. A :ii SURFACEELEV. I ?t uc oo 'i€g Hine c :i; r? 911gM d a J ao :: a': €:: I g c ;3€ oa :U .i E . 9o € E -i lraa :o o o a5 ;: :l RET RTS vrsu^LcLAssrFlcATlox ta.E (,J f:= OJ IG )U

very moist SAI{DY CLAY with some gravel, moderalely firn low plasticity t,o mediun to fi.rm plascj.ci.ty, dark brorm to orange .5 color change in - -21-- noce: sharP ='z,Xr-io clays fron dark brown to orange ac 5.5' .7/t - ---!-- \ :7/lv- .- t0 /,/,/. x s g5/ 1I .5" I moist GMVELLY CLAY; uinor anounts of sand, mediumPlasticitYr ---- -_-.;---i- firu :!l orange - \ ro hard Ean and \ Scopped auger at 8-5' ii Stopped samPler at 9'11" note: soil tYPes in boch 4l l-= percolacion borings are con- si.stent with uPPer 4' in l- classificacion boring li -fooc notb: drilled two r deep percolation test holes I I appioxiuaceJ'Y 15' east and !tr 15t west of PB-4

qD, l- -i+ t--- t----: l= F t--: tr l=

i l-F (

WATER GROUND SA$PLE TYPE A-56 A - Acea cctringr. 8 - 8lo6! rcoPlr SERGENT.HAUSKTNS & BECKWITH S - 2" O.D. 1.38" l.D. lubr rcnplr. U - 3" O.O. 2.a2" 1.D. tubr rooplr. a.tLr . tLcs.,r . rtilloJc ' 35^ tC . Ell !.{E Cfr ' a' t r.. ^ ^ .\i-..--ll-l

Cgtrtfz'lg €a.gEl r.EOt ra o|^rg o aalobr. SlLll eu.rtzt'la €r.!c5 !Ea? a.l lo tar acctor.trratc. taaof.r rttLy rrottfTt olrttilttf tQtrnyav. tiot|! ro.ar|.f rrOC arOC3''G ca.ca {cotur cr.|

ca.oft Lta3 rer?xgrco rrti aor. O.utl?c arrxirv "cc35 cr,.rl,ll|lS t63aacoofo rrtr cl-l.vw |i. O.ra ft5. raCCliu Oa^.ct - lt DOtSr aaor rralSrt rcrxYft. !E{? t(rt|.t3 ca^v lcq-oyct^tc. rtaoor.|r^r.'|'t .r,|errTt tFrF rV rfi|. fCtttr .xcrralt OF !"a, Ce.r tO a!.Cr .|.t'Gi,'t. r:Orl^a rhlt

C. vCL .!t!rll rcr'aYrr. ^rx^rr?r. ,rr3. E ir|c, Lrtl.r trtctttSo. rad?tt lo aea-trctatl I ElAt4trltLtatt ca/.y ?trt t r'.oatttE tctr{vrl ^t6ttt xcratjroc E L^?t?l act-{Yrl CU^.?Z|?E cljvtroc

axocil?l tdlrxtty- r.arEo tofa.Yr'?€ tf rtlrC. tfl. rfEcr^ft|-t tc.tl{taGD. LEa?to|.oturacaY XEYTO WELI-CONSTRUCTTON -^o3t LrLt!. crlY

3'runr tol Catttl !r!t'! Clsr.a

at^83 LAat 't/rrl-Elr aaorx ar.oclt?t. a..E ..|c.cEr"tlt{t-r|t. rG^rHtrGO. LEttta 9JltY. LafitoraDt1jtOrv

O.lO F a a(€tlt,aatl.aLtr.ta lrof,3t"C. rolrralrr|G. 9r{! latrrEtto, crr"aY. r3otur to oltr aa*a.

|.l?tl.E r6r6a1. tta...af?€. trE't|.Y ltt rcrr cors?rrfiro srrcrt,cr?rc,rs lf.tHtltO. Ltc|{t crctir!.t Cr.r. ra?tt_ Fal 3.iO '.cr ra?tlv^!s. ag DOCD t f"i SaDr{tx?3. CI.'VEY "U.F^ctO,rS

a^ots 'taa|.t3. ca^Y. cLrvl:' Clx?tzt?t. tit|.t. €*t Frr.r fO Ftf.E ca.rrao. tli tO LtCr{.t Cr^y

LOG OF BORING KEO5

TESTWELL No. 2 TEST WELL No.2 (@NTTNUED) r(tr 6fttir?|0r ( gt.tt!. aoc - lrrv. rr:rrq ro osr la*i c^att:fixq,tt cr-.Y ^Catoatatt. ?aglxlmr|?l.y ^iE Snf ta.c L^t.rc toarYrt. racor,t"crittY. atclr(a.r ea/ry o -.oc3 to cr.rv -afi r|'|.crt Cr-^l

adLo.gar?t. cr.Cs 'tEoor.ri^i rt.v lrr3l'?:. ai^ratttt. atootSr ta*i tO Ca^lt-{ at(ttr

-^r3 r,t|l tolS 11656a . trttxYt{Y ortr lggpa3a iaql erott to Gl..Y E r -^c3 f|?hqtt cr.rY -ao3t ttcr.|,|.XTLY t tjtm rcrr{rrr c.c3 r,?r telc c!.t -^r5:ttxqJ? c!^Y Ir l-/.4S rltE rraiTLt ^r.c3frE r@- fgr'rlvrY

caoct rt?x t Glc tttttt ,oi?xtrY. raol,|a ?o c.|r ca^Y rr?af t.tlc! .? ttr. t rt!? or '- t- 3t

li?i_!n'E: rrx^rrr€. rcrr rt.3 cr^i|€o. llft.crhc r r.c..r-^txr eno rrotrig. E ICOarraatOr.t3,, B Clrt a ( E E carr/tL rc€!a.cl|"g .a_olcrr?E. ticr..r^ra?|_y ^raoc3rrt. tt at atxaaaf?.c. taact rIou,{t o3 LllrrG ^r.ot3a"t ,€r,|fvtt. r.aot|.r| rtoorS. aaor( ro !l*it3. a^Y |.ltt?t tuat c..ct rti. taaa aron LtxrE ar.ocaftt tqtafYtY LAtltS 'carxltt o.cf"E L tt?t YFY. tt .rttr"|G. tf,orus ro "ot co^t3c c^r.to. LE}ft to ra9.rrr. ca^Y

XEYTO WEII CONSTRUCTION ulrtlr''. rl:r.co. rriliavrrr. crvrro- crY'?rtlil'. cq,EAae. L3a' ar;Lt3f \ c/tY ^dl-o.Et.?c. ;r3F.rffiLt LArrG 'O_ tiaytt, ataareart|c.!tt$t arq,/na? ^rr3tt! \. rolrtavry. rctnr. tO ortr tcootll{ arar La"r?E rcri{rtr. a.|rc|l lcc€r.o.,,l, ^LtGt- rt|ot A tEl.u3t^rs. rctrxars tttlcsJ. \ tO ttctxrt.. clry E- Ll?t?E ttrxr'tv. a. -.^.€lt?E. LOt? ?o lro *oxJU a'!}.t.|jr C..Y rCttOat 4^Vfy caoE3 ff?a.Gttt cl_lY AI.ofS Cr-tyat olcttt. lrra^rrfttc. rttv ttrtG Gal|rto. .aD||Jr otrr cr^v et^OCS"o 4^vat'

Gt- lCt rtr-r- co{:ttrlctt€'r 3recr7|cry|Gb.3 7C 3.aao'rcr tYtcava_3_

LOG OF BORINGS

Darncs & tloorc- ijG lqg ..&uy/Xrd-"'.,?Slrn . ' Cqutq/tl"rt: ro( t. t" I

' ea,+S€

; tcrrvr---._! 1:tS |"- " ''f'10' '' I J-ZrlgE t-'-'1 1o-tf- - I lGra"el I ( /f.2D-. I f e'tET t! -;:h, ...g-sf .. {# sf-fo . lo.rr I 4f'ro c-'- tr.tf IvledBrn L|-oClu+ rq *l'sz' M;i, SS'$o ,r"AUClr Colf gg' cf'70 lLQno- ?o.l{.- to-?*t,&r& mh{ '7o zf A,.&rH;l /7t-t0 sLzor'' 90'Ef .-. rbttf to-,SZ gf-f 'nk o - /gf-/to 1$no ?o-t{ yTrnf - T 7s'rn J1{-@ ^ ',^r,.s v .rs,.&*"*1**,- rV"I'I;tl*.lI{tA;i--G;;? holr brrlTd ..? ( prer *r! ?oo' &:il"d ctp.Sd Q;rz*.{.'} pva was \nsLtfud, . ,.,^i uktt .{ i,-r.r., bri.lglg t=;r{r, S" &*Lirfto}-Ut" r^ri.ft^, LLs *us^ J\ t r i L - r . r. , ^ I - - | ,r d, trrorrl-j f tkr

ii 1.rl it it: --,M-

.: a :J'6t' ,J 1; - --....:J. ('6t:t? l{-16 E-r ' . 5DA.5A, 9f9o : ' sof€/o 7o -3K .90-srf 95'go s/t5a 320&f sa0.Jtf,. ' szttT .52&s7o *,{t^ 7fr-Rf w.s5 6,t,^uet. j3f3{ct slt-ryo 7{ct3'{f '3tT-3t0. . S{o-s*f s+5{? 3sD3g 5e-ftr U5'30 _s5?90 3cox.{ 5t0.af . 3Lf.th . 56.5P -:. stuif . ( nrago j"i'{,: - - -.-'.{.1:3 . 3?8?r . . : ': i. 2$....s?f'{06 I \)7Vl <4 t' (au7/rhz: rz'rt{?rtir f (autuvLl-/.' c>-387 la.( ) i_

^Jet "- -eus€ -- f-b* -l:-: -" '(:''-t'ii'i:l r'- ' tl.---- tt7 ,ttr.f ::,.clJ v*Iygnc.m*(-- f9,fi -"--- - 9;:;, t -l-_-- /?-f:O:o_. t - 3c3f -- ;t-)8?' rL._': ..tgo.Rf._L F:;; u&*3t ' 3r4o irrctr '€nr O-ttZl Ovcrbcr&,!t. , _-_ /77,40 \r01s 8i' I 15, lfnccr.*.1',Jc/lJ k,;; lo-tf 6vruc - 4f 'so grael6bre,u*inJk1 -I-llt-lwr rae,l-ut* fi '+irHor.llPh1 ,, L.*.rt-r- ;1 Gi.i.. . /ff.$o acrrfrL Vo Jt''5.f Dlor.tri .9.-l t /Ehlsf *"* Sf'6o h"t{r..t'. /g'/t0 I to4f /4rLr I cf'70 I tqo 3ss/ ' /Lft7o- I Ov.--k4 7o-t{. v.lcr-.'c.CW tph{ I ?fEo :lr /7t-/t0 I t.tcrnual go-Ef l' sttr *{o . -l- .-. rbrtS 0 '-v.\n%*, ?f-f .- /8f-lr0 i ?o-{ tfo-nf . - 1s'/@ i ^ v 9o/ts6F J68qEA ; 0$159q: 58t0gcI -oSt s/t Juw A"t W'8c JZo?t oC'Sst )fl F .q -Btar8 d5t'5r+t- shr-olt olgSEe ot6 5l)oD.!9 JtE oes-s:/s'..-. w-flz| >l:u\ 1l:(. Prll:J Jzs.ms ("rl ty.'f 7?,95/5 " -Avit -' H_ ,'B ,obl S/S-0/S' A'181i1 T{1

08 6-EF =.- ltr& f:i -ek6l, ;.- '9z t t 1:ii :. . :'.';. '|-tgtz''i

1'-.

t:'-- : -': .r' o9{lz ? stuo/z

1. 0rz-5t7

'c'{.aa APPENDD(B

BASETINEU/ATR, QUALITT DATA c oo oo o oo u-- o oo g ? o c,c oS oecoooo -\ o oo o c oo o e hhtst;. h oo ;E oooooooo6crii_od56b 6i- nc1r $= >- ;; Hrya ; ; F; : ;;-: ;; :;;;:::: ::: : : d : d : 5^ -\ q q q q q g gg g EE'E 3B d d d d d do'EE o'E ; dEEEEE d ;d E E EE EE o ; d ; ; ; ;;; ;; ; i ; ;

A\ *E' qEqqqEEE d o'd J J 8EEEEEE8E8EEE3E3E3E Eg d o'd ;; d;; d;;;;;;;;;; i; ; J- o o o c' o c)o o ro o.p o3 o -E oFosoS o o elP VE H F 5^ 99Oooocror ?B d -' o' d ; ; ; : : : : : : : : : :: ::3: : : 3 : : o A 5 o o o o o o o cr (t o cr c) o o c> o o 0 G' 0 0 c, o €, e e c) EB - r^ o C) o o o o oo g o gn o on o3c,IoB o o o .+9 NH 3 E =g o U (lr qq eq qq88qqqq88B8R8s888s8 4\ e; 3 3 3 a!4q| d c; d d d d o' o' -' d d d d d ; d ; d ;; ; I d I ; ; =-g g U O O Ct Ct Ct 6; Ct O O ct O Ct et O F O E Gr ct Ct ct O C, O O C, o g .D 6E U' <.J Fg C' Olg Ct Ct O O g g <<\ O O .5 |'r n o !? G) g c' ts c) r\ c|-:---.-E-5 t^ ct tr o| h o 6 ca c) 9- N s g -Fa( :EE g >F -- O^ h-99Oc)ooirhi - -; o.i.oH o.E. oH o3 o o o J5 6; 3 JO F F F- 3 ! U gEg ta U F< -oF og.Eo3 ot t €F:FB&E': eoFF o r.:, I }P g 5g - g L 3r€ O-6 c o o ct o ct ct oo c, o c) o cr o ->o -;Y-;-F-EOFOE'EOEO3o c, E;f 5 Fftp\oE'= A o ooFggof'rs'xg'oEog'goF UI\ o€': ob FE AJ

I @ -- o.C : : 3 3 : : :;? :: 3:: 3: : ; 3 I ::3i: : 3::

o C^ e q q q e E a 8q q q q q q I I I r I I I I I I I3 3 o JH; c; c; c; d o' c; c; dd c; d c; -' -' ;.' ; ; fJ - ; ; ; : ; : i ; ; U3Sg o F Qv q q q q q q qq q -u0 e q e q E E q I I I I I I I I I3 r FFI, - A

ect OF ddddddd€I;qEqEqqEqE EE EEqqEfi E€EB3E8FgF88 6v d c; ; ; ; ; ; ;; ; a;; ;i:li;ddo.d;i r^ nooocrooo oo o o o ooo o o oo oooooooooooo 8B

5: q o o o o o oo o q9o ooooooooooo -_9:::?? o ? ? 9 ?F oo do o d c; ci c; d d 6 ;d d dc;d d;;;;d;;;;:: o a.

5 o 3 o o o o o o o (> o o o o o o o o c, F g o ec, <, o o o oo o o AB - OO ooo o o 5: 3 o o Gr o o c, o o c, o o cD o cr0oo o oocroo o 3B (, U qqqqeeqEqqqeqqqqqqeq (!; ; dd de; eqqqsqrEqEEs >q6 c; d d d o o o o q o o o.j ; J ; ;;;:;;;;l;; --F o o o o o o o o o o c\ t! R 3 F g = o o.g o o c, o o o.) c) c, o 9! o o Jf 9q' o l! h JC' -e U L) tr U O O FF !Y cr c) o o N o q 6 O N .4 0 0 0 0 Gr F< ry I O c' c, o o c, o o h c, c, 36*ooE-sGg.i6-- FN irne ot nF L) :P r 5g - a z g )< .E o>q )F\ o o-o o oo o o o o o g p p o o o o o oo o (>crc) ->o t g o c, oo ocro t'l \t t\ rt rO v-E

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BARNEYSCANYON

FIELp l.rATERQUALTTY pATA(l)

Conductivi ty Tenperature Sanple Site Designation Date OH uuhos/cn ,oc

Bancroft Spring I 2-l l-87 8.24 1200 9

Barneys Canyon Mine Adit I 2-l r-87 8.55 900 10.2

BC-69 01-12-88 8.05 I 100 3.5

BC-71 0l-12-88 8.34 850 2.7

BC-148 0l-08-88 7. t9 I100 8.4

,o BC-l 50 0l-07-88 7.50 1610 8.3

(f ) lleasured by Daures& Moore in the field v o TABLE D-3 REPORTOF ANALYSIS hnD".RE DAtE Oa/O6/Og - - - SHEETN0 0734509 SUttH EEC u/c 203 clrc No : 10353t ORtGtN - NHD DISP - D l.ri[r. N0. DESCR ELEI,I FH TETIF COND TDS TSS 0709677 BANCROFTST.RTNCT 8. ?4 9.0 | 200 lilt/cll ?et n6/L 45.9 HGIL 0?096?8 BANCRUT'TSPRI NG D

0709679 BARNEYSTII NPRTL T 0.55 to.t 900 liltlcll J67 NG/L 1.8 itclL 07096S0 SARNEYS}II NPRTLD

LA8.NO. DESCR Et.Etl s8 AS EA CD o?oj677 TTANCROFTSF.RINGT ( .ot nG/L 0.03? r,rG./L 0. | | ilGlL ( 0.0t ltclL .00? rclL 0?096?8 EANCROFTSPftINGD( .01 lt6lL 0.0 | 7 ltclL 0.09 lt6lL ( o.0l ltclL .005 HGIL 07a9679 II'iRNgYS}tINPRTLT ( .0t HGlL o.otI ilclL 0.09 ltcll ( 0.01 HGIL .005 l{G/L 0?09680 SAnNEYSl,nNr,riTr-D ( .01 lrclL o.0lo l,tclL 0.09 ltcll ( o.0t H6lL .oo5 rGlL

LAtr.N0. DESCR ELEh CA CR CU FE PE 0709677 gANCROFTSPRINGT ( 96. nG/L o.ot ltclL 0.ot ]tGlL 0.59 ltclL .01 3 ltclL 07g967B t'ANCROFTSFRINGD ( o.0t ltG./L 0.ot ir6lL o.0t ltclL .006 ltclL o'iotI,79 TARNEY.IH ( I NF.RTLT 00. HGIL o.ot il6lL o.oa ltclL o.21 nGlL .046 hclL 0?b9600 EARNEYSIIINPT{TLD ( 0.ot irclL o.ol itclL 0.0f ltclL .oo5 nG/L

AIr. I NO. DE.SCR ELEII ltG llN . l{c NT 07096?7 TIANCROFTSPRI NGT 52.7 t1G/L o.04 HGIL 0.000t ilclL 0.06 l,tclL 3. I l,rclL 07096i'u LtlflCR0FfSPRINGD o.0t HGIL 0.03 ttclL 0?096?9 BARNEYSI{I ( NF.RILT 43. ? ]tGlL 0.0t lrclL 0.000t ltG/L 0.0? ltclL 3.0 l,rclL 0709680 t'AKilEYSllINFRTLI) ( 0.0t l,tclL 0.03 l,tclL

LA8.NO. DESCR ELEII SE A6 NA ZN ALK 0709677 IIANCROFTSPRIN6T .005 lt6lL 0.ot lt6lL | 23. ltclL 0.0t HGIL 169 nG/L ^ v I^BLEo-t rilnued-2t o REPORTOF ANALYSI.f hrtD-IrE DATE O4/06/88 silEgt N0 - 0?3450S Sutrll - EIC - - u/c ?o3 clrc No ?035.rt ofttctN - NitD DISF, - D

LAB.NO. DESCR ELEII SE AG NA ZN ALI( 07096?0 EANCROTTSPRINGD( .004 ( ltclL o.ot ltclL o.0t ltcll e?0eg?t T.ARNEYS}ITNPRTLT ( .004 ttc./L ( o.ot l,tclL 74, nG/L o.02 if6ll 194 nc/L 0?09680 9ARNEYSIIINFTTTLI) ( .004 ( HGIL 0.0t lt6lL o.0l HGIL

LATI.NO. DESCR ELEh CL CN(E' HI' NO3-N o?0967? EANCROFTSPRTNGT | 68 lt6lL .005 ltclL 0.|0 ilGlL 326 nc/L 0.49 ilG/L t)?0t6?B BANCROFTSPRINGD

0?096?9 SARNEYS}II NT.RTLI ?J.7 NG/L .005 ftclL o. | 4 ir6ll 3t 4 ltclL o.37 Ac/L 070r.s00 BARNEY.S}ItNI'RTLD

LAB.NO. DESCR ELEII s04 NO?-N }IPN-F }IPN-T o7 ir'it67'l TTANCROFTSPRNGT I 159 nc/L 0.02 l,tclL 12 42 0?09678 BANCROFISPI I NGI)

0709!r79 TTARNEYSHINF.RTLT | 38 itcll o. 02 il6lL 23 il00 0709680 BARNEYS}IINPTITLD JJ \\ JJJJJJJJJJ\\\\\\\\\\ J rJLt IJ I.' L' I' IJ I.:' L' L' IJ t5 u EE ta-E--E==E E t\ o. .o\ FF.OrOtr.ru.tl|1O.O. t a{@ ooooooo.. t\l ?rF,|1t ooooooa{oo - v, coooo&

JJ \\ \\\\\\\\\\\\\J!'JJJJJJJJJJJ tJu r.9 19 rJ |J r5 !9 tl t9 tJ lJ rt rt u -= -a=-=E==--=== -(D a-F'.?t.lttlnc{oFtit C.l Yr (DO(D(DO.OO(D(DO t.t(r ,a F o O(D(D(DCGr?OOOO(DO AF .DH=F I o- a4 c

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+- -= E- i.fld!e1 Fu, fJFe'tFurtlJFvrF14 l!FtrFv, IJF \JOHC'; JOtsc,EJCIHOF JoHoFJo C.Tb,FAFA o LJFAFFI|TFAFC IJ,|FAFAIiI EO.o. O.O.66 o.oo. O€.OFF €.oFF.O.oFF rO.OFF.o |JJft | | | | trtrrtlt rattl E: L' Ct ct Lt c.)LrLrt,c,()Lrc, !, (, L' C' L'

LAB.NO. DESCR ELEil SE AG NA ZN ALT

0800143 UELL EC-69 DIS ( 0.004 lr6lL ( 0.0t ilGlL O.O?XGIL

0so0l 44 UELL 8C-?I TOT ( o.004 ir6lL ( 0.ot t'r6lL 45. nG/L o.J9 lr6lL 196 AG/L 0800t 45 uEt.L BC-?t Dl.l ( 0.004 lrclL ( o.ot lrclL 0.0? l,tclL

LAB.NO. DESCR ELE}I CL CN(E' HD NO3-N

0800t4t UELL BC-69 TOT ?6 NG/L .005 ltclL 0.07 HGIL 23t lr6lL 0.2 lrclL os00l 43 [,ELL 8C-69 Dts 0000144 UELL EC-?I T0'r 56 nG/L .008 HGIL 0.09 lrclL 257 nC/L o.3 HGIL 0000t45 L'ELL 8C-?I DTS

LA8.NO. DESCR ELEI'I s04 NO2-N AL EI lr0 otr00t42 UELL 8C-69 t0T 9s nc/L o.o2 ilGlL o.5 h6lL .005 l,lclL o. | | lrclL 0000t43 UELL BC-69 Dts o. I lrclL .oo5 t{G/L 0. | | rclL oB00r{4 UELL 8C-71 TOT 65 nGlL o.o2 l,rclL 20.0 xGlL .005 lrclL 0. | 2 lr6lL 0800| 45 UELL BC-?I Dts o.? ll6lL .005 llc/L 0. | 0 l,rclL

LA!.NO. DESCR ELEI,I FO40 P HPN.T }IFN.F sl02 0000t42 UELL 8C-69 TOT 0.20 ltclL o.7 llG/L 3 lrcll 3 ltclL I O HGIL oB00t43, uEt-t-gc-ar ors I os00t44 UELL EC-7I TOT 4.43 ]tClL 5.0 ltclL 3 itclL 3 lr6/L l0 H6lL o8o0t45 I,ELL 8C-?t DIS

I.,18.NO. DESCR ELEII ACD s-?

0800t42 UELL IrC-69 T0T ?4 lrG/L

0800t43 UELL r,u-69 Dt.S (o

A I g Vt c

G =E I z r9 oE ? 4 t,F 97 5d ,Dztt c€h ( g b.q oFl rg o ?? SEuc.l ro=l 4Lrv, F

F' o ft

L' 3 -tt Flt t9 (., a L.' i) IJ I E EE

$= ill!FU, \JO ftldF,a o a GFF I|Jc{ | | F? (t Lt €o E &rl a6e o&r-tJ',4-:J I lrj tr: lr, .c,at3 z .€t.t l^r. lrJl- Ct q ? ga = la:,i . €r O o= -q o o v taa G o Gr EJG@ v IABLEo-, O"rnued-6t o' REFORTOF ANALYSIS l'fHD-f{E DnT[ O2/29/8A - . - SIEET N0 8000s05 sutrH EEC u/c 203 cH6 NO - ?03531 ORTGIN - NI,ID DTSP. D

LA8.N0. IIESCR ELE}t Pll TEIIP coNn TDS t.ts 0800096 8cl 49 880t087 7.t9 8.1 | | oo ltH./cll 90' AG/L ?l9l nG/L 0800097 8ct 48 g00ro0l)

0800098 8ct50 s00t07t 7.50 9.3 t6to ltHlclt 425 nc/L 4029 HGIL 0800099 Bct50 800t070

LAB.NO. DESCR ELE}I stl AS FA CD 0800096 ttct48 8B0t007 .01 nc/L .372 nG/L 0.93 HCIL 0. | 9 ltclL 0.0?t ltclL 000009? Bcl48 080to0D ( .0t ltclL . ol4 ltG./L o.ql nclL o.o2 nc/L 0.005 lt6lL 0800098 Bct50 880t077 ( .0t llclL .442 nGlL o.4? ?IG/L 0.2t lt6lL 0.0t 6 ltclL 0800099 trct50 880t07D ( .0t xGlL .0t 3 it6lL o,l2 nc/L 0.05 lrG./L 0.005 ll6lL

I.AB.NO. DESCR ELE}I CA CR CU FE PB 0000096 8ct4s 880t081 167. Ac/L 0. | 4 ltclL 0.3? trclL 0.56 ltclL | .20 lt6lL 080009? Bct40 890t08D o.e? H6lL o.0? lrclL 0.05 ltclL o.ot0 ItGlL 0800098 8ct50 ssot 0?T | 56. tt6lL o.22 nc/L o.30 HGIL 64. nc/L .48 l,tclL 0000099 tct50 080t071) o.0t ltclL 0.o2 lt6lL 0.06 ltclL 0. 005 ltclL

LAII.NO. DESCR ELEII h6 lrN HG NI x 0000096 t,C| 48 800t007 ' 66. ltclL | . ?o itclL 0.000t ltclL o. |3 ilclL 12.0 H6lL 0800097 tct4s s00rosD o.3o ltc./L o.o3 l,r6lL 0800098 8Ct50 oB0to?T 60. nGlL f.lt H6lt o.000t ltclL o.|5 |lc/L | 3. 3 lrclL 0800099 8ct50 88ot0?t) o.28 llcll o.02 ltcll

t.A8.N0. DESCR ELE}I SE AG NN ZN ALI( 0800096 Bct48 880t087 0.004 ltclL 0.ot ltcll 67. nc/L o.48 ltcll I9J NG|L rABLEo-, O-tnued-?t REF,ONTOr ANALYSIS lflrD-RE DATE O?/29/en silfitiT No - 0800s05 surH - EIC u/c - - ?03 orc No 2035tt 0Rt6tN - NHD DISP - D

LAtt.NO. DESCR ELEII SE AG NA ZN ALI( 080009? Bct 48 800t 00D ( 0.004 llclL ( 0.01 NG/L 0.03 ilclL otr00098 8ct 50 880t o7T ( o.oo4 l{c/L ( o.0l NE/L I t7 . nc/L o.47 nG/L 95 nG/L 0800099 Bct 50 880t 07D ( 0.o04 HGIL ( o.ol NG/L o.ot ll6lL

LAB.NO. DESCR ELE}I CL CN(E' HD NO3.N 0800096 Fct 48 000| o8T 3t 4 ltclL .ol NG/L 0.26 nG/L 55t ltclL 0.7 nG/L 0000097 ttct 48 080t 08D 0800090 trc| 50 B00to?T 314 HGIL .006 NG/L o.4l nc/L 362 l{cll o.2 nc/L 0800099 tct50 B80t07D

I.AB.NO. DESCR ELIII s04 N02-l,l AL EI |l0 00000?6 Bct 48 s8ot ost T'B H6lL o.02 ltclL 3.5 NG/L .05t trclL 0. | 3 HG./L 0800097 8ct 40 800| 00D 0.1 NG/L .005 H6lL o. | 2 ltc/L 0800098 Ect50 880t 07T 80 ll6./L o.o2 nG/L 7.2 NG/L . ol 9 ilclL o. | 3 t16lL 0800099 BCt50 800| 07D o.l NG/L .005 HclL 0. t | |,tGlL

LAII:NO. DESCR ELEI,I FO40 F }IPN-T I,IFN.F sI02 0000096 BCt40 000t oot | .0r ltclL 3. I ltclL 4 UC/L 3 HGIL 50 r,rclL 0800097 8Ct 48 880t 00D 0800098 BCt50 800t 0?T 2.03 ltclL 2.3 lrclL 9 NG/L 3 ltclL 27 xc/L 0800099'8ct50 800t o?D

1.A8.N0. DE.iCR Et.Ell ACD .s-2 0800096 trct 4B 0Bot007 55 l\GlL 0800097 t'C| 4B 000roBD TABLED-3 lcontlnued-Bl REFORTOF ANAT.Y.fI.S il,tD-RE DAIE O?/29/88 SHEEI' NO - - 0800805 Stllrll EEC u/c - to3 fltG NO - 20353t oRlcIN - NHD DlSf, - D

LAT.NO. DESCR ELE}I ACD s-2 08000?0 sct50 800t0?T 30 r{G/L 0800099 tct50 0soto?D APPENDIX GI

SOIL PROFILEDES(RIPUONS Aqassiz Series

A1-0 to 7 inchesr- dark grayish-brown (10yR 4/21 very cobbly sirt lo"t,, very_ fine and fine, granular structrire; 6oft, v6ry friable' ^slightly sticklr ana slightly plastiti conmon fine rgotst 50 p__elcent, cobbrestones and grivel; - noderately alkaline (pH 8.4); clear, wavy boundail.

c1-7 to 15 inches, _brown (10yR s/3, veqz cobbly slit roam, d,ark PT"op ( 10YR 3l3!- when moist; i'"ry i,veak, dedium, subairgulai u19clv_ structur6 and moderaie, fine, granurar structuie; srightty hard, vgry friable, irightiy-sticky and slightiy plastici conunon fine rootst 50 p5rceit cobbiestones ind gravel; slightly calcareous; line disseminated and rirne coatings on coarse fragmentj; moderatery alkaline (pH g.4); abrupt, irregular boundary.

R-15 inches, carcareous sandstone and limestone.

Bradshaw Series

All-0 to 9 inches, grayish-dark (10yR s/21 very cobbty silt loam, yery da.rk grayish brown ( i0y:n 3/21' whei uroisf; moderate, fine and very- tiner_ granulir structure; soft, verir friabler' stightly. sticky and stigfrtty plastic; conunon'fine'ana v-ry' fine roots and-few mediirn r6ois; .any fine to"""t 50 -.i"ii,p"i-6tt cobblestones and graver; mildiy afkaline- (pttz'.51 ; smooth boundarT.

A12-9 to 20 inchesrbrown (10yR s/31 very cobbry sirt loam, vea? dark grayish brown lion 3l2y'when-moist;'nod-rare, iine ina vgII fine;- granular struiture; slightly-cornf,on hard, friable, slightly. sticklz_ and s_lightly plaitic; ffrrb and veri fine foots and-few nediuir robtii nany fine porest 55 perceni cobblestones and graver; rnildly atkiline 1in z.e1; giadoai- wa\ry boundarl.

92-20 to 52 in^ches, brown (10yR s/2,t very cobbly sitt loan, brown _(IOYR 4/3, when nroiet; weakr'nediurn and- fine, sulingur-r gtructure_ bLgclry_ par!,ing - to moderate, f ine, granrif- aiJ srrghlry hard, frlabre, slightty sridkt- aira srighiri, plastici conmon fine anci very fini foots and few tn6aiurir rootsi manY fine and micro porest 60 percent cobblestones 3nd -gravel ; nirdly arkati-ne bn z i e y; graduar *"rv boundary. t ; c1-52 to 72 inches, brown (10r'R s/3) very cobbty siLt loam, brown (1gYl 4/3, qhgn moist; -stighrlymaisive-; sligitly hard,'finn; s r_i_g_htry stic_ky and ptasi,rc;' 7 o f erceni cobblestones and gravel; modeiatef-y cifcareouli lime occurs as thLck on-bottoirs of coars6 fragments-and ind noaeriiEfy thick to thin coats on the sides top"--5- of coar"6 fragnnents; moderately alkaline (pn g.2).---- Copperton Series

All-0 to 6 inches, dark grayish-brown (10yR 4/2) very gravelly l9*, vety dark brown- (ftyR 2/2) whdn moist; weakr- tf,in, Pl?t^V _ structure pard,ing to moderate, f ine, llranular; slightly hard, very friabie, slightly sticky and'srlghtly prastici conmon fine and rarge iootJ; 50 percent grivel-and cobblestones; nildly alkafine (plt 2.6); creat, smooth boundary.

A12-5 to 13 inches, dark grayish-brown (roy-R s/2, vea^lz-uroist; cobbly heavy loam, very dark grayistr-brown 1iotr,- 3/2r'when 'moderate,weakr coar€e, subanguJ.ar blocky structuie parting to fine and verT fine, granular; hardrfriable, sticky and slLghtJ.y -plastic; -onunon fine and large rootst 55 percent cobbrestones and gravel; moderateLy arkaline (plt g.2r; abrupt, smooth boundary.

Ac-13 to 19 -inches, grayish-brown- (toy-R s/2) very cobbty heavy lo_arn, dark brown ( 1OyR 3/3\ when ioisti weak,- finel subangular blocklz stiucture paiting to moderate, very fine, granular_; hard, friabre, sticky and slightly plastici-conmon fine and large rootst 55 perlent cobblestbn-es and gravel; strongly carcareousp noderitely arkarine (pH 9.3); ibrupt, smooth boundary. clca-l9 to 42- inches, veafz pale brown (10yR s/2) very gravelly roam, light yellowish bt'own (10yR'nonsticky ei:1 rvhen moist;-mSssive;- extrenely_ hard, very firm, and nonplastic; f6w fine and large rootsi go percent grav6l and cob6lestones; veraz strongly calcareousl weakly ienrented; strongty alkaline (pH 8.5); abrupt, smooth boundailr. c2-42 to 60 inchesr_pale-bro!iln (l0yR 6/31 very cobbly fine sandy 1o?r-'_yerlowish brown (10yl' s/4') wlien n6ist; missive; har&, friable nonsticklr and nbnplastici few fine rootsl. 75 perceni cobblestor-re_g _ald graveli strongJ.y calcareous; modSrately alkaline (pH 8.3).

Drrr Creek Series

Ap-O to 6 inches, gray_ish-brown (l0yR s/21 sirt loam, very dark grayish - brown - ( lOYR 3/2, when uroisi,l weak, thick, platy Etructure -parting to modeiate, rnediun and flne, granulai; slightly hard, verar friable, slightly sticky' jnd sligfrtfy plastici common very fine roots; c'ornmo-nvery iine and micro- pores; neutral (pH 2.3) ; abrupt, smooth boundary. A1-5 to 11 inchesr- grayish_-brown (lOyR S/2) hearryr silt loamrvery 9-"Tk- grayish brown ( 10yR 3 / 2,)' when rnoi'st;-sticky weik, vea-lz tttick, platy struct'ure; har6, friable, -r"ryand-srightly plastici cormon very fine roiltsi many fine, finei .tt& micro poresi weak tillage pan gives the surface of this horizon a troweled appearancei neutral (pn G.9); clear, snooth boundary.

B2t-15 to 29 inctres, si.lty clay, brown (?.5y-R s/4) when crushed and brown (10.yR 5/_3)- on lices of ieds, brorin (?.5yR 4/4,' when nroist and crushdd, dark brown 1?.svi 3/31 whbn moist; strongr medium, prismatic structure and etrong, mediurn, angular blocky; extremery hard, firm, eticky' and vea? prastici- f"y very fine rootl; few fine pores and many rnicr6 Pores; thickr continuous clay filrns; slightly calcar6ous in lower 5 inches; noderaterli arkaline ipn i.e); gradual, smooth boundary. B3tca-29 to .4.?.inches, brown (10yR s/31 silty clay roam, brown (Z.IYR 5_/!-l w\en crushed, brown (loiR s/3, wheri'noist, brown (7.5YR 5/4't wlren moist crushed;'noderate, medium prisrnatic structure and moderate, mediun, eubangular broc-lqr; very hard, friable, sricky airA slighily plasltc; few veii ftn6 rootsi nany fine and vealz fine poiee; few moderately-thick clay films; slightly calcireousr lirne-is soft and occurs as streaks and coatings on vertical ped faces; strongly aLkaline (pH 8.8); grldual, surooth boun&ary.

cca-42 to 50,inches, light-gray (10yR 7/21 heavy silt loam, brown (10yR S/3) yhen rnoist; mlsiive; ved, hard, friable, sricky and slightly prastici very few very fine roots; fei cobblestones; strongly calcarlous, lirne is disseminated and in streaks and sprofcf,es; very strongry alkaline (pH 9.2). Fitzoerald Series

02-2 inches to.0, very grayish brown (10yR 3/2,) litter of partially fark 9ecornposgd leav-es, grass, and'other plaht residue, vea'lz dark brown (10yR 2/Z) wfr5n moist All-0 to 4 inche,s, - vgry dark grayish-brown ( lOyR 3/2,) gravelly lo*' vea'rzfark brown (10fr itzy when noist; modela[e, n;+ fine, granuJ.ar structuie; soft,'ver7 friabli, nonsticliy an& nonprastic; cornmon fine, nedirim, a-nd large roots; ne-utrar (pH 6.8); clear, smooth boundary.

412-4 to 7 ilches, dar_k-grayish-brown (10yR 4/2,) gravelly roam, very 9ark prown (10yR f/zy when moist; modeiaf,e, veri fine, granular- structure; soft, veaar friable, 'large-slightly stiify ini nonplastic; corunon fine. medlum, and ro6ts; ne-utral (pH 6.8); abrupt, wary boundary.- A2-7 to 18 inchesr -light-yerlowish-brown (10yR 6/4y very gravelly silt loam, yellowish brorsn (10YR Sldy when m5ist;-n5derate', flT"r granurar structure; soft, r"ry friabls, srighirj, sticky 'and and 3ongla-slic; iomnon finer- nedium, iirg6 roots; neutral (pH 6.6); gradual, iregular boundary. B&A-18 to 34_ilches, nixed B2t and A2 horizonsi B2t part is brown (7.5YR 5/41-very gravelry roam, brown (tOilR 4/3-,, when moistj massivei eoft, v-e-ry friaLre, siigtrtty itictcy an6 nonprastici few thin clay filhs ? A2 nateriil is like that in- ttre A2 horizoni fewtine and rarge roots; neutral (pu 6.5); creai, wav1r boundary.

B2t-34 to 70- inches, reddish-yerlow (z.5yR 6/61 very graverly sandy clay l-9*, yellowi-sh bror"ir ( 10yR SlSl wf,eri nroist'; moderate, ng{iun, subangular blocky' structur6; very hard, friable, sticJcy and pras[,ic; few moderarery-firms ittiir. cla:y fil;; on peds and thin, continuous clay on coarse fragments; few fine and targe root'; neulrar (pH G.G).

Gappmaver Series

0L-2 inches to 0r undecomposed to elightly decomposed litter of oak leaves and grass.

A1-0 to 10 inchee., yeTy dark grayigtr-brown (10y-R g/2,) very cobbry very l9*' $ark brown (ftyf ?/2') when'noistl-m6deraie, n;+ fine, granular structuie;- eoft,'ver1, friabl6, nonsticf.y a"l nonprastic; nany fine and mediun roots and f6w riige i'.r"i"; cormron fine pores; neutral (pH G.G); clear, waqr uoindary.-'

A12-10 to 15 inchesr.g-ra_yish-brown (lOyR s/2,) very gravelry silt loam, dark grayiJh 6ror,m ( royR' 4rr) whei .ro'"rrEa, .r;+ d;;i gray-ish brown_ ( l0yR 3/21' when noist; moderate, f in--e and utg{iun, granulai structu're; slightry' il;d;- .r"ry friable, slightry .stic\r- and slightty pia6tici nany'fine Lnd medium roots and few large rools;-c6rnnron fine p-ores; neutrar (pn 6 . 6 ) ; abrupt, wavy-boundarlr. A2-15 to 20 _inches, p_ale-brown (10yR 6/3,) very gravelly sirt roam, dark brown [rovr,'EtructurAi 4/31 *ir"n-r"ist;'nodeiat-e, -.;'ty fine and ng9ignr granuJ.ar eltghtry' r,"ta, friable, slightly."_!f9*y and sltghtfi plas€ici common fine pores, neutral (pH 6.6); abrupt, wavi boundiryo B21t-20 ro 26 i:n*":. pale-!,rown {10yR 6/31 gravelly silty clay *9?T,__glaVish brown ( 10IF _S/2,,'Q/3, .qt crushed, 6ro*n 12.svi 1l4l when moiet. brorin (7.5yR "twhen noisl and crrished; moderate, medium and t'tne. subairg"Iii tG-.Ly Etructurei hard, friablg, etic\r and prastic; common fine roots and few medium and large robte; ioderat_ely thick, continuous .l;t films on lnos_t peds and coarse frigments; Bome peds coai"& with bleached sind; neutral (pH 6.gi; clear, navt' boundary.-

B22i-26 to 44 light yellowish-brown (loyR 6/4,) vezy gravelly _inch_es, -yellgwigfr '(-t-0y-R cl.ay loam, aelt brown l ti\-6r;;it ,orr.i. moist; noderat_e, nedium- and f ine. J"ui"g"rai structure; very-hard, friabJ.e, sticky ind plasfic; conmon fine roots and-few nidiun and large ioots;-thin, continuous clay filsrs on coarae fragments; neutrar (pn G.8); crear, wa\4y boundary.

c1-44 to 72 inches, pale-brown (10yR 6/31 ver1' gravelry silt loarn, \qg ( 10Yr 4/ 3l when inoist; maisive;- siightrf hard, Ygry friable' etightli sticklz and slightly-plastici- conmon fine roots and few nreaium r5ots; belo-w a6p€n of 50 inches this horizon has thin lime coatings on und6rsides of coarse fragments; matrix noncalcareoua; n-eutral (pH ?.2).

Harkers Series

A1-0 to 14 Lnches, vea? dark grayish-brown-when (10yR 3/21 heavy roam, Ygry dark h_rovm (10YR 2I2) 'stigrrtty moistj moderat5, medlun and fine'^granular stiucture; harb, friablel sticklz and plastici cormron rarge, irediuin, f-ine, ind verlz fine r6ots; conmon very. 5$" pores and few fine pores; neudral (pH ?.0 ); clear, smooth boundary.

Blt-14 to 19 inches, grgyish-brown (loyR s/2,t gravelry clay roarn, vely dark glgyish biown (t0yR itzy when'n5ist; wlak, rtediurn, subangular blocky structrire; hard, firrr, sticky -andand plastici connon large_ and mediun roots aira few fine v5ry fini roots vetaz -few veqr fine pores; neutral (ptt ?.0), ?lear, smooth boundary. B21t-19 to !?. inches, reddish-brown (5yR sl4) gravelly cray, dark reddish brown (5YR 3/4, whennioist, ur6nri 4lat'' when fz.sra' o moist and crushed; stiong,-btocky; nediun, pii"rrad,ic structrire Parting to B-tTong, medium, ti.w hard, extremery firm, very gticky lnd very plastic;'ie, la?ge, ,"di.-, fine', and vea? f ine roots t vary few very f irie pores i cotnmon moderatery thi-ck- clay-fitrnj on ped fales; neutlral tpn 7.2ri diffuse, smooth boundary.

B22t-42 to 58-.inches, reddish-brown (5yR s/4,) very gravelly clay, dark reddish brown-(5-yR 3/41 wiren moist, bioilir (z.siR 4/gi when nroist and crushid; etrong, nediun, prismatic-structure parting -61ocky;-v6ry to i!"grg, medium,-plastic-; hard, extremery f itmr very sticky- and vely f ew iine an'a vearz f in6 rootst Y"ty few verfz fine poresi cotunon moderately thick -clay _ filns on ped ftces; n6utrai (pH 2.0 crearr- smooth boundary. );

clca-58 to 80 lJ.ght yellowish-brown (tOyR 6/4y very gravelJ.y _inches, ' clay loamr- biown I ' z . 5tr sl 4l when moist; nissive'; ygry f irur, v_eafz qticky and plastic; {rery few f in6 and ve+ fine roots; few fine liores;' irigltry calJareous; neutrar (pir 7.0).

I{allsburq Series A1-0 to 5 inches, grayish-b_rown (10yR s/2,) very cobbry loam, very dSrk grayish blown (10yR sizy when ioisti weakr-rhin;'priti-vef structure p+ilg to noderate, fine, glranular;-ptastici' hard, friable, _ slightly stj.cky and ifightfy corunon fin6 rootst 50 percent cobbrestones and giavLt; neulrar (pH6.G); clear, wavy boundary.

B1t-5 to 9 Lnchesr 9{a}ish-brorm-dark (10yR s/2, very cobbly sitty gray lo*' vgry grayish trown ( 10vR sliy wheri morsi', dark brown -(].5tr 3/21 wlren moist aria crushedi very hard, friable' sgigky and slightry prastic; conmon tihe rdotsr 50 percent cob_blestones; thinr- cbntinuous cray films; neutrar (pH 5.6); clear, wavy boundary. B2t-9 to t7 Lnclres, brown (?.5yR sl4) very cobbly tighr silty dqrT brown (?._syB 3/31 wheri noiit; brow?r (?:5y? itsi when"1"y, moLst and cirshed; stiong, med,ium and fin'e, angurai blocky structure; extrenely rraii, firm praitic; coMlon fine roots, 70 percent cobblestones;"ti.ry-and' thin, coirtinuoui clay films; neutral lptt e .e 1; clear, irregular u6unaaraz. R-17 inches, fractured bedrock.

Harker-Dry Creek CHEMTECH CHEMI CAL AND BACTERIO LOG ICAL ANAITS€S 367 SOUTHCOMMERCE LOOP 2875MAIN OREM.UTAH 84057 SUITE#101 (801) 226-8822 SALTLAKE CrTl gt46 3a11t (801) 483-1162

CLIENT: JBR Consultants 865 So. Cedar. Knolls West Cedar City, UT e47ZO

LAB NO. UO234A4

LOCATION: Bar.ney's Canyon - BC-RAP-11

CERTIFTCATE OF ANALYS-IS

PARAHETER LEVEL

pH Units 7.2e CEC t1eqt1OA9 26,6 Chlor.ide as Cl, mg/l(g l06 Onganic Hatter., % r.31 Nitrate as NOg,-N, mg/Kg 990 Phosphorus as PO.c-p, mg/Kg t.9 Potassium as K, mg/Kg t94 Calciutm as Ca, ng/Rg t,o2o Magnes i un as Hg, rng./Kg 809 Zinc as Zrt, mg/Kg o.g Copper as Cu, mg/Kg 5.1 Sul{ate aB SO.ar mg/Kg 1r73O Sodium as Na, mg/Kg t8l f rorr as Fe, mg/Kg 244 Conduct ivi ty, umhos/cnt 416 ?6 Saturation €4. 5

Note: lY'letals (Cu, Fe, Zn, -Ca, K, I'tg) determined on DpTA extr.act.

{&.=-.--- Rex Henderson GHEMTECH CHEM ICAL AND MCTEH I OLOGICAL ANATYSES 367SOTJTH COMMERCE LOOP 2875MAIN OREM,UTAH 84057 SUITE#101 (80112264822 SALTTAKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar Knol ls trlest Cedar City, UT 84720

LAB NO: UO234B4

LOCATION:Barney's Canyon - BC-RAP-11

CERTIFICATE OF ANALYSIS

PARAHETER LEVEL

Sieve Analysis: Sieve Size: 40, % Retained 7l.t 6ot % Reta i rred a.2 3 ( .(. 100. % Retained 7.6 lu ",r/" 2OO, % Retained 6.e ttL 2OO, % Passed 6.2 2r

' Rex Herrder'son CHEMTECH CHEMICAL AND BACTERIOLOGICALANATYSES 367SOUTH COMMERCE LOOP 2875MA|N OREM.UTAH 84057 SUITE#101 (8O1)22G8822 SALTLAKE CITY UTAH84115 (801) 483-1162

CLIENT: JBR Corrsuttants 865 So. Cedar Knol lE West Cedar City, UT e47ZO

LAB NOi UO23477

LOCATION! Bar'ney' s Canyon - BP-4, 6-9"

CERTIFICATE OF ANALYSIS

PARAFlETER LEVEL

pH Units 6.e9 CEC t'leq/lOGg 17.7 Chlonide as C1, rng/Kg 74 Or.ganic Hatter., % 3. 75 Nitrate as NOg-N, nglKg lr4OO Phosphorus as PO4-p, mg/Kg 4.9 Potassiun as K, mg/Kg 552 Calcium as Ca, nglKg 1r37O l'lagnesiurn as l'lg, mglKg 359 Zinc as Zn, mg/Kg 10.9 Coppen as Cu, rng/Kg 5.9 Sul{ate as SO., nglKg 2r33O Sodiurn as Na, rng/Kg 2A fr'on as Fe, mg/Kg 113 Conduct ivi ty, umhos./crrrs 272 1 Saturation 67.3

Note: l'letals (cu, Fe, zn, ca, K, F,lg)determi rred on DPTA e:xtr.act.

Rex Herrder'son CHEMTECH CHEMI CAL AN D BACTERI OLOGI CAL ANATYSES 367SOUTH COMMERCE LOOP 2875MAIN OREM.UTAH 84057 SUITE#101 (801) 226-8822 SALTI.AKE CITY UTAH 84115 (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar KnoI l= blet Cedan Ci tY r rrT flr' :0

LAB NOi UQ2:3477

LOCATIGN: Earni-.y's Car.ycn - BP-4, 6-9"

CERTIFICATE OF ANALYSIS

PARAHETER LEVEL

Sieve Analysis: Sieve Size: 40, % Retai ned 79.3

6Qt % Fei-ai rretl 10. E 100, % Retained 6,3 20O, % Retained 2.3

2LtO r % PaEsed o

Rex CHEMTECH CHEMICAL AN D BACTEBIOLOG ICAL ANATYSES 367SOUTH COMMERCE LOOP 2875MAtN OREM,UTAH 84057 SUITE#101 (801',)226-8822 SALTI.AKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 So, Cedar. Knol l s trfest Cedar City, UT e472O

LAB NO: UO2347A

LOCATI0Ni Bar.rtey'= Carryon BP-1, Q-4I'

CERTIFICATE OF ANALYSIS

PARAI'IETER LEVEL

pH Units 6. 55 CEC Meq/lOO9 24.3 Chloride as C1, mg/l(g lgo Organic Flatter., % 1.64 Nitnate as NOa-N, mg/Kg 7 r27Q Phosphorus as PO€-p, mglKg tt,7 Potassium as K, ng/Kg 588 Calc i um as Ca, rnglKg 1,21O l'lagnesiltm as l.lg, rnglKg 349 Tinc as Zn, mg/Kg 16.6 Coppen as Cu, mg/Kg 65.2 Sul{ate aE SO., mg/Kg 904 Sodiurn as Na, mg/Kg 44 Iron as Fe, mg/Kg lgo Conduct ivi ty, umhos lcm. 183 I Saturat i orr 59.3

Note: Netals (Cu, Fe, Zn, Ca, K, Flg) deter'mi ned oh DPTA extr'act,

Rex Hendersorr CHEMTECH CHEM ICAL AN D BACTERI OLOGI CAL ANATYSE'S 367 SOUTHCOMMERCE LOOP 2875 MAIN OREM.UTAH 84057 surTE#101 (8O1)226-8822 SALTI-AKE CITY UTAH 84115 (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar KnoI I s htest Cedar City, UT A4ZZO

LAB NOz UO2347A

LOCATION:Barrrey's Canyorr - Bp-1, O-4,

CERTIFICATE OF ANALYSIS

PARANETER LEVEL

Sieve Analysis: Sieve Size: 40, % Retalned 78,3 6Qt % Reta ined 5.9 100. % Retained 3.5 2OO, % Retained 4.O ll 2OO, % Passed 8.3 it'lo

Rex H nder:'on CHEMTECH CHEMI CAL AN D BACTERI OLOGI CAL ANATYSES 367SOUTH COMMERCE LOOP 2875MA|N OREM.UTAH 84057 sutTE#101 {8O1)226-8822 SALTI-AKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar Knol ls trlest Cedar. City, UT 84720

LAB NO; UO2348O

LOCATI0N: Bar.rrey's Canyon - BC - Leach Pad Sutbsoil

CERTIFICATE OF ANALYSIS

FARANETER LEVEL

pH Units 7.73 CEC Heq/lOOg 7.49 Chloridi as Cl, m9/K9 125 0r.ganic l'latter, % o, 605 Nitr'ate as NOg-N, mg/Kq 745 Pl'rcsplrorus as POr-P, mg/Kg 1.1 Fotassium as K, mg/Kg 32 Cal c i un as Ca, nglKg lr28O I'tagnesium as Mg, mg/Hg 263 Tinc ag 7n, mg/Kg o,8 Copper' as Cu, mg/Kg 2.2 Eutl{ate as SO.lr ng/Rg 505 Sodiutm as l.la, mg/Kg 30 f r'on as Fe, mg/Rg 13.4 Conduct ivi ty, umhos/cnrg 311 % Saturation 47.2

Note: Hetals (Cu, Fe, Zn, Ca, Kr Flg) determirred on DPTA extr'act,

Rex Henderson CHEMTECH CHEMICAL AND MCTERIOLOG ICAL ANAIYSES 367 SOUTHCOMMERCE LOOP 2875MArN OREM,UTAH 84057 SUITE#101 (801',)226-8822 SALTI-AKE CITY UTAH84115 (801) 483-1162

CLIENT: JBR Consultants 865 So. Cedar Knol ls tleEt Cedar City, UT A472O

LAB NO: UO2348O

LOCATION:Barney's Canyon - BC Leach Pad Subsoil

CERTIFICATE OF ANALYSIS

PARAI"IETER LEVEL

Sieve Analysis: Sieve Size: 40, % Retained 73. t 6Q, % Retained 11.1 1OO. % Retained to.3 20O, % Retained 2.3 2OO, % Pa=sed o

Rex Hender'son CHEMTECH CHEMICAL AND BACTERIOLOGICAL ANATYSES 367SOUTH COMMERCE LOOP 2875MAIN OREM.UTAH 84057 SUITE#101 (8O1)226-8822 SALTLAKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar. Knol I s trfest Cedar City, UT e47ZO

LAB NO: UO23485

LOCATION: Earney's Canyon - BC-RAP-17 .W_

EERLIFICATE OF ANALYSIS

PARANETER LEVEL

pH Units 7.48 CEC l''leq/ I CtOg 15. 5 Chloride as Cl, mg/Kg 190 Organic Flatter', % o,551 Nitnate as NOg-N, mglKg lr73O

Phosphonus as FOr-p 1 t*glfig 1.8 Potass i urm a.s l(, nrg/Kg 105 Calcinm a.s Ca, mg/Kg lr5OO Hagrresium as Mg, mg/Kg 324 Zinc as Zn, mg/K9 r,1 Copper. as Cu, mg/Kg 7.6 Sulfate as SOar mg/Kg 216 Sodinm as Na, mg/Kg 38 f r'on as Fe, mglKg 36.2 Conduct ivi tyr unhos/crn3 309

Note: Fletals (Cu, Fe, Zn, Ca, K, l',tg) determined on DPTA extract.

Rex Hender'son CHEMTECH CHEM ICAL AN O BACTERIO LOG ICAL ANALYSES 367 SOUTHCOMMERCE LOOP 2875MA|N OREM.UTAH 84057 SUITE#101 (w1) 226-8822 SALTLAKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar Knol ls West Cedar City, UT E47ZO

LAB NO: UO23486

LOCATION: Barhey's Canyon - BC-RAP-tB /

CERTIFTCATE OF ANALYSIS

FARAHETER LEVEL

pH Units 7,Ot CEC Heq/lOO9 15,3 Chlonide as Cl, mg/Kg se Or.garric Matter., % o. 841 Ni tr.ate as NOs-N , mgtK.g 1r15O Phospl.forus as POa-P, mg/Rg 4.7 Potassiutrrr as Kr mg/Kg 154 Calciun as Cd, mg/Kg tr34O Hagnesium as I'tg, mg/Kg 52e Zinc as Zn, mglKg (.1 Copper as Cu, mg/Kg 2.O Sul{ate as SOar nglKg 1 ,45O Sodium a.s Na, mg/Kg 7t fron as Fe, m9/Kg 38.6 Conduct ivi ty, urilhos/cms 267

Note! |'letals (Cu, Fe, Zn, Ca, K, Hg) deter.mined on DPTA extract.

Hender'son Fitzegerald CHETT'ITECH CHEMI CAL AND BACTERI OLOGI CAL ANATYSES 367 SOUTHCOMMERCE LOOP 2875MAtN OREM.UTAH 84057 SUITE#101 (8O1)226-8822 SALTLAKE CITY UTAH84115 (801)483-1162

CLIENT: JBR ConsuItants 865 So. Cedar. Knol ls hlest Cedar City, UT e47ZO

LAB NO: UO23481

LOCATICTN:Barney's Canyon - BC-RAP-2

CERTIFICATE OF ANALYSIS

PARANETER LEVET

pH Urri ts 3.7e CEC Heq/1OO9 19.2 Clilonide as CI, mglKg t19 Ctrganic I'tatter., % I .59 Nitrate as NOg-N, mglKg 705 PhospFfor'us as PO<-P, mg/Kg 2,3 Potass i ltm as K, mg/Kg 29t Calcium as CB, mg/Kg I ,460 Hagrres i um as l,lg, mg/ Kg 168 Tinc as 7n, mglKg t4.2 Copper as Cu, mg/Kg 20 .4 Sul{ate as SOa, mg/Kg 757 Sodium as Na, mg/Kg 3l f r.orr as Fe, mglKg 234 Conduct ivi ty, unrhos/cme 17t % Satunation 5l .9

Note: Metals (Cu, Fe, 7n, Ca, K, Mg) determirred on DPTA extr'act.

Rex Hender'son CHEMTECH CHEMICAL AN D BACTERIOLOG ICAL ANATYSES 367SOUTH COMMERCE LOOP 2875MAIN OREM,UTAH 84057 SUITE#101 (8O1)226-8822 SALT[-AKE C|TY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 5o. Cedar KnoI ls trlest Cedar City, UT A4ZZO

LAB NO: UO234ST

LOCATION: Banney's Carryorr- BC-RAp-z

CERTIFICATE OF ANALYSIS

PARAI"IETER LEVEL

Sieve Arralysis: Sieve Size: 40, % Retained 36.4 60, % Retained 4,2 lOO. % Retained 7.7 2OO, % Retairred t3.7 ?OO, % Passed 13,9 3,

4tu Rex Hendersorr Copperton CHEMTECH CHEM ICAL AND BACTERIOLOG ICAL ANATTSES 367SOUTH COMMERCE LOOP 2875MAIN OREM.UTAH 84057 SUITE#101 (801122c.8822 SALTIAKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 5o. Cedar KnoIls Lfest Cedar City, UT e472O

LAB NOi VO23479

LOCATION: Barney's Canyon - BC - Leach Copper'ton r O-19'

CERTIFICATE OF ANALYSIS

PARAI'IETER Ll:VEL

pH Units 6.24 CEC lleq/lOOg 22 .4 Chlor.ide as Cl, mg/Kg 74 Or.ganic Hatter, % 3. 03 Nitrate as NO=,-N,mglKg 1 ,390 Plrospliorus as POa-P, ng/Kg 2.9 Pote,ssi utrnas K, mg/Kg 456 Cal c i ltm as Ca, mg/Kg 1r23O l'lagnesium as I'lg, mg/Kg 456 Zinc as 7n, mg/Kg 7.6 Coppen as Cu, mg/Kg 51. I 9ul{ate as SOor mg/Kg 305 Sodium e.s NB, m9/K9 42 Iron as Fe, mg/Kg et.2 Conduct ivi ty, umhosI cm? tet % Satnration 49 .4

Note: Netals (Cu, Fe, Zn, Ca, K, Mg) deter'rnined cn DPTA extr'act,

Re:< Hender.son CHEMTECH CHEM ICAL AND BACTERIOLOG ICAL ANALYSES 367SOUTH COMMERCE LOOP 2875MAIN OREM,UTAH 84057 SUITE#101 (eol') 226-8822 SALTI-AKE CITY UTAH84115 (801)483-1162

CLIEI{T: JBR Consul tants P65 So, Cedar' Knol ls West Cedan City, UT B4ZZO

LAB NOi UO23479

LOCATION:gaFne:v's Carryon - BC - Leach Copperton, O-19'

CERTIFICATE OF ANALYSIS

PARAMETER LEVEL

Sieve Analysis: Sieve Size: 40, % Retai ned 84, 6 60t % Retai rred 3.4 100, % Retai rreC a 't- ?oo, % Reta.i ned 3.3 o: 2OO, % PasseC 6.4 4a [,

Rex Hender'sorr Bradhsaw-Agassiz CHEMTECH CHEMICAL AN D BACTERIOLOG I CAL ANAIYSES 367 SOUTHCOMMERCE LOOP 2875MA|N OREM.UTAH 84057 SUITE#101 (8O1)226-8822 SALTLAKE CITY UTAH84115 (801)483-1162

CLIENT: JBR ConEultants 865 So. Cedar Knolls hlest Cedar City, UT 84720

LAB NO: UO23474

LOCATION! Bar'ney's Carryon BC-RB-4

CERTIFICATE OF ANALYSIS

FARAI"IETER LEVEL

pH Units 6.94 CEC Fleq/ 1Oo9 19. 1 Clilor.ide a.s Cl, mg/Kg 77 Organic Hatter, % 4, 30 Nitrate as NOg-t'|, mg/Kg 990 Phosplrorus as POa-P, mg/Kg 13. 1 Potassium as K, mg/Kg 644 Calciurn as Ca, ng/Kg 15?O Hagnesium as l',19,mg/Kg ztL Zinc as Zn, mg/Kg 17.? Copper as Cu, mg/Kg t6.6 Sulfate as SOar mg/Kg 360 Sodiurn as Na, nglKg 42 f r'on as Fel mg/Kg 14" C6nduct ivi ty, umhoslcrrrs 324 % Saturat i orr 47.7

Note: I1etals (Cu, Fe, Zn, Ca, K, l'tgl determirred on DPTA extr'act. CHEMTECH CHEM I CAL AN D BACTERI OLOG ICAL ANAIYSES 367SOUTH COMMEBCE LOOP 2875 MAIN OREM,UTAH 84057 SUITE#101 (eol) 226-8822 SALTLAKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar Knol ls West Cedar City, UT A472O

LAB NOr UO23474

LOCATION! Barrrey's Canyon BC-RB-4

CERTIFICATE gF ANALYSIS

PARAHETER LEVEL

Sieve Analysis: Sieve Size: 40, % Retained 59.4 6O, % Retained 9,1 1OO. % Retained 6,7 ZOO, % Retained 10.5 2OO, % Passed t4.z 3'l'/e

Rex Hender'son CHEMTECH CHEMICAL ANO BACTERIOLOG I CAL ANAIYS€S 367 SOUTHCOMMERCE LOOP 2875MArN OREM,UTAH 84057 SUITE#101 (8O1)226-8822 SALTLAKE CITI 9146 3A11U (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar Knol ls trlest Cedan City, UT A472O

LAB NO: UO23483

LOCATION: Barney's Canyorr - BC-RAP-B

CERTTFICATE OF ANALYSIS

PARAHETER LEVEL

pH Units 6.36 CEC Fleq/lOAg 2t.4 Chlonide as Cl, rng/Kg 129 Organic Hatter, % 5. 08 Nitnate as NO3-N, mg/Kg 1r25O Pl.rosphorus as POa-P, mg/Kg 4,8 Potassium as K, mg/Kg ?92 Calcium as Ca, mg/Kg 1r64O Hagnesium as fr,lg, mg/Kg 194 Tinc as Zn, mg/Kg 9.2 Coppen as Cu, mg/Kg 15.4 9ul{ate aE SOer mg/Kg 372 Sodiltm as Na, mg/Kg 49 f r'orr as Fe, mglKg 176 Conduct ivi ty, unhos/cms ?18 % Satunation 45. 5

Note: Netals (Cu, Fe, Zn, Ca, K, Hg) determirred orr DPTA extr'act.

Rex HenderEon CHEMTECH CHEM ICAL AND BACTERI OLOG ICAL ANATYSES 367 SOTJTHCOMMERCE LOOP 2875MAIN OREM,UTAH 84057 SUITE#101 (8O1)226-e822 SALTt AKECrTl g14g 3a1t, (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar Knol I s lJest Cedar City, UT A472O

LAB NO: UO23483

LOCATICIN:Barrrey's canyon - Bc-RAp-8

gERTIFICATE OF ANALYSIS

PARAFIETER LEVEL

Sieve Analysis: Sieve Size: 40, % Retained 65. 9 6O, % Retained 9.6 "4 1OO. % Retained 6,1 2OO, % Retained 7.e 2OO, % PaEsed 10.6 3l

Rex Hender'sorr CHEMTECH CHEMICAL AND BACTERIOLOG ICAL ANAIYSES 367SOUTH COMMERCE LOOP 2875 MAIN OREM.UTAH 84057 sulTE#101 (801) 226-8822 SALTI-AKE CITY UTAH 84115 (801)483-1162

CLIENT: JBR Consultants 865 $o. Cedar Knolls tlest Cedan City, UT A472O

LAB NO: UO234g2

LOCATIBN: Barney's Canyon - BC-RAP-S

CERTIFICATE OF ANALYSIS

PARAHETER LEVEL

pH Units 6.24 CEC Fleq/lOO9 t6.2 Chloride as C1, mg/Kg 4e4 Organic Matter., % 3.07 Nitrate as N0a-N, mg/Kg 860 Plrosphonus as POa-P, mg/Kg 2.4 Pote.ssiutm as K, mg/Kg 361 Ca 1c i um aE Ca, ng/Kg 1r550 Magnesium as l,tg, mg/Kg 152 Zinc aE Zn, mg/Kg 11.3 Copper as Cu, mg/Kg 26.2 Sul{ate as SOar mg/Kg 180 Sodiun as Na, mg/Kg 32 Ir'on as Fe, mg/Kg t27 Conduct ivi ty, umhos/cmt 2c|4 % Saturation 43.2

Note: Hetals (Cu, Fe, Zn, Ca, K, Hg) deter'mined on DPTA extr'act,

Rex Herrder'son CHEMTECH CHEMICAL AND BrcTERIOLOG ICAL ANATYS€S 367SOUTH COMMERCE LOOP 2875MAIN OREM,UTAH 84057 SUITE#101 (80',t)226.8822 SALTLAKE CIry UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 So, Cedar KnoI I s lrlest Cedar City, UT B4ZZO

LAB NO: UO23482

LOCATIONTBarney's Canyon BC-RAP-5

CERTIFICATE OF ANALYSIS

PARAFIETER LEVEL

Sieve Analysis:

Sieve Size: 40, % Retained 51.O /o^*i'2r/'- ---'- --- -' '-* - ln 60, % Retained M''i*J0 10. I ,:, \" ,..iI ^, ^: 1OO, % F,etai ned €'1*n'o 8.4 6i 2OO, % Retained / f ttto !3:3---o.-- 2OO, % Passed 16.3 33'c1,

Rex Hender'son CHEMTECH CHEMICAL AND BACTERI OLOGI CAL ANAIYSFS 367SOUTH COMMERCE LOOP 2875MAtN OREM,UTAH 84057 SUITE#101 (8011226-8822 SALTI-AKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Corrsultants 865 So. Cedar Knol ls l,test Cedar* City, UT A47ZO

LAB NO. LtO23476

LOCATION: Bar.ney's Canyon - BC-RB-9

CERTIFICATE OF ANALYSIS

PARAF,IETER LEVEL

pH Units 6.15 CEG Heq/14O9 25, 6 Clrloride as Cl, mg/Kg 244 Or.ganic l'latter, % 1.91 Nitnate as l.l0o-N, mg/Kg Irl40 PFrosphorus as PO.r-P, mglRg 4.1 Potassium as Ke mg/Kg 356 Calciun as Ca, rng/Kg 1r83O l'lagnesium as Mg, mg/Kg Irg60 Zinc as 7n, mg/Kg 9.6 Copper as Cu, mg/Kg 23. 6 Sul{ate as SOar mglKg 389 Sodium as Na, mg/Kg 41 Ir'on as Fe, mg/Kg 176 Conduct ivi ty, umhos./cng 2=t % Satunat i orr 50. 3

Note: Fletals (Cu, Fe, Zn, Ca, K, Hgl determined on DPTA extr.act.

Rex Herrderson CHEMTECH CHEMICAL AND BACTERIOLOGICAL ANAIYSES 367 SOUTHCOMMERCE LOOP 2875MA|N OREM.UTAH 84057 SUITE#101 (801) 226-8822 SAUTLAKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 So, Cedar Knol ls West Cedar City, UT g47ZO

LAB NOi UO23476

LOCATIONTBarney's Canyon - BC-RB-9

CERTIFICATE OF ANALYSIS

PARAI.lETER LEVEL

Sieve Analysis: Sieve Size: 40, % Retained 53. I 6O, % Retained t2.4 1OO, 96 Retained 9.7 20O, % Retained t2. o tt 2OO, % PasEed 12,5 Jl lo

Hender'son Gappnayer-tfal lsburg CHEMTECH CHEMICAL AND EACTER I OLOG I CAL ANATYSES 367 SOUTHCOMMERCE LOOP 2875MA|N OREM.UTAH 84057 SUITE#101 ($O1)226-8822 SALTLAKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar Knolls West Cedan City, UT A47ZO

LAB NO: UO23475

LOCATION: Bar.ney's Canyon - 8C-RB-6

CERTTFICATE OF ANALYSIS

FARAFIETER LEVEL

pH Uni ts 6. a2 CEC Heq/lOOg 23.9 Chlor'ide as Cl, mg/Kg 116 Organic Hatter, % r.67 Nitrat-e as NO'-N; rng/Kg 1r49O Pl'fosphorus as POa-P, rnglKg 3.2 Potassium as K, mg/Kg 618 Ca 1c i um as Ca, nglKg 1r55O Magnesium as l'lg, mg/Rg L r74O 7inc. as Zn, ng/Kg 12.4 Copper as Cu, rng/Kg 34.4 Sulfate as SGer mg/Kg 2P2 Sodiltm as Na, mg/Kg 40 f r'on as Fe, mglltg 176 Ccnductivity, unhos/cns 355 % Satunation q6. 5

Note: I'letals (Clt, Fe, Zn, Ca, K, l.1g) determirred orr DPTA ex t r'act .

Rex Hender'Eon CHEMTECH CHEMICAL AND BACTERIOLOG ICAL ANATYSES 367 SOUTHCOMMERCE LOOP 2875MAIN OREM,UTAH 84057 SUITE#101 (8O1)226{,822 SALTLAKE CITY UTAH84115 (801)483-1162

CLIENT: JBR Consultants 865 So. Cedar Knol ls t,lest Cedar City, UT A472O

LAB NO'. UO23473

LOCATION:Barney's Canyon BC-RB-6

CERTIFICATE OF ANALYSIS

PARANETER LEVEL

9ieve Analysis: Sieve Size: 40, % Retai ned 62.2 6ot t Retained 9.1 100. ?t Retai ned 6.9 200, I Retained 9,7 zOQ, % Passed 12.6 1t

Rex Herrder'son APFENDIXGIII

AqD/BASE POTE{IIAL IABOR.AT{)RY REFORTIS

u}5 GolonAoo AruaunrcAL RECE.IU6D o LasonAToRY REPORTTO: Jay Hamitt BP l'linerals America 1513 l'lineral Square DATE RCVD: t2-23-87 Salt Lale City, UT g4t1e REPORTED:l-1t-87 BILL TO: BP I'linera I s Ameri ca Attn: Lynn Hutchinson P.O. *: 1515 l'tirieral Square Salt Lake City, UT g4llA ======: = ANALYSIS REGUESTED: 3 Samples for Acid Base Potentiat r ======AT{ALYSIS REPBRT:

ABBR ANALYTE UI{ITS ''IETHODREFERENCE

pH Hydrogen Ion Activity uni ts EPA 3. e.2

AP(T} Acid potential from totat sulfur T/10007 EPA 3.2.4

tleutra I ization potentia I T/10007 EPA 3. e.3

; AcidlBase potentiel T/ I 0007 EPA 1.3. I

+ = trasic balance, - = acid balance AF, lttr' and ABP are all reported in Tons/1000Tons CaCO3equivalent.

In Sgbeks procedure for asse:sing acid-toxicity the material is claseified as acid toric if any of the follorrring conditions grevaiI:

t- The rnaterial in a 1:5 slurry rrrith distilled uater has a pH sf r. 4.0

2- The Acid Potential of the nitric acid extractaole eulfur (mo:tly pyritic sulfur') less the lleutrali zation Potential is i'3 f /1000T Calcium Carbonate eqrrivalent.

The Acid Potential of the Total sulfur ie first calculated. (This Lrsrst caEe condition is based on the assumption that a!1 sulfur is in pyritic form). If this yields an ABp of > S, then the actual forms of the sulfur are determined and the ABP is recalculated based on the Nitric Acid ertractable fraction only- tj Page 1 of 2

eao S. Mein Scr.eet . Elnighcon. Cotonado BO6OI e [3O3J 659-231 3 Meiling Addr.ess: P.O. Dnewer5,OT. Elnighcorl CO El(]60'l EouoRp.oo AnJauntcAL SOIL (. \ \^/ATER ENVIRc)NMENTAL t.^I \LaeoRATony

LABORATORYRESULTS

Samole IO d AP(T) Ne. ABP Cornment s sl 8C-85 5-60 8.9 +563. -7. 90_145 +556. Non-To r i c 2a0-275

*2 t'tc-2S 5-95 8.6 -1. -3. -4. 135_140 Non-To r i c I 55_t65 ?45_e55 s3 f.tc-25 375-500 6.3 -4. 550-570 Non-To x i c

[iaoo itionar co*e.ts

Sample *1 is very high in lime thus potential. giving it a high "basic forniing.,

Sample *,s e and 3 are only slighty acid forming.

Iysis Supelvi sed ta App Release By {1 page e of ?

44., s' Mein srr-er . Bnighron coronedo .,0601 . Meiling Addr.eee: p.O. t3031659-2313 Dnerryen5O7. BFighcorr. CO Et06C)I APFEhIDD(I).I

OPERAIIO}.IAL IMFOTJNDMH{r SrAGE CAPACIIY CI,'RVES Tablc 3.XL-2 Bameys Canyon Projcct Imponndmcnt Containmcnt Volumcs

Runofr Volumcs (Acre.fect) ImpouadnrcnU Watcrshcd Impormdmcnt l0Jrr 25yr 100yr Basi! L D. Arca (ac) Canacitv(AF) z}hr ?l'hr 2Ahr M 565 qn 5a 7J, 103. P &0 B5 105 14J a8 o 96.0 xL4 30 4t 6.9 R 46'2JJ 2L0 14.6 19.6 B,L s sgto 85.4 1&4 2A:7 415 T fla 9J t2 ls IT Mcl€o 435 800 L4 L8 3.1 DuEp 6fln A Al 519 09 yL 20 Dumo 6$0 B n2 132 LO ljl 22 RunoE rclumcs !rc bascdon thc creicttcd ' cnrtc aumbcc for cach watcEshcd. RunoE volumescitcd for M indudc-ruaoff from thc adjaccotwastc duraps

(IO

'o o( STAGE.CAPACITYCURVE IMPOUNDMENTO

5585 FT SPILLIVAY CULVERT NVERT ELEUANON

F l!

gl I

g,

{ CAPACITY(ACRE.FEET) O 55r5 STAG E CAPACITY CURVE IMPOUNDMENT R

-/ ^ rt 5505 --4po rn. ''' .-/

550r.06 Fr sPtuvAr ts CULUERTNVERT ELEUANON tL

|rI 5495 I

vl

ro 15 20 25 30 CAPACITY(ACRE.FEET)

STAGE-CAPACITY CURVE IMPOUNDMENTS

56t3.7Fr SPTLLwAY C ULVERT N VERT ELE VATI ON

F G ur 5600 (9

v,

ss8o5 40 60 80 CAPACITY (ACRE-FEET) 5IAbL.LAPACII Y CURVT IMPOUNDMENT T

5600 ( I'^-, 5595 - -- 5590 F 5500.37 FT SPILL\TAY t! CULVERTNVERT ELEVANON

g, 558s (' ,OO YR. .tl 5580 25 YR. ,orR

ro 15 CAPACIT Y (ACRE-FEET)

STAGE-CAPACITYCURVE MEL.CO IMPOUNDMENT (.O

F

u, 19

F v,

,OOYR. 25 YR. ,o rR. 6960

40 60 CAPACITY (ACRE.FEET) \O STAGECAPACITY CURVE IMPOUNDMENTDUMP 6500 A

F l! 62 u, (9

F v,

6170o CAPACITY(ACRE - FEET) STAGECAPACITY CURVE (o IMPOUNDMENTDUMP 6500 B

^6' F 3 u, c -6r

6r50; 69 CAPACITY (ACRE. FEET) STAGE- CAPACITY CURVE (o IMPOUNDMENTM

t- l! !{ 6380 s,,

vr

'20 30 ,o CAPACITY(ACRE. FEET) STAGE- CAPAC IT Y CURVE IMPOUNDMENTP

553t.5t FT SPtLLtvAY CULVERT NVERT ELEVATION

F (o|rI

F Vr

(o ssoo6 20 30 CAPACITY(ACRE.FEET) ATPENDIX l>tr

DESTGNsPtsclrlcJrfllol{ls FoR clIANNErs AI.ID ROADSIDE DrrGrEs (

v Barneys Canyon Culver:t Design

Reach/ Basin Peak llinimun llininun Basin Area Flow Dianeter Eeadrsater f. D. faeresl fr:fsl / i nrrhaq I I i nnhas I o 45.2 0.1 L2 8 N 119.0 0.3 L2 8 Barneys Clm. 1430.0 4.0 L2 18 u 31.5 9.9 18 29 tfel-Co A 2.6 0.0 L2 8 t{el-Co B 13.5 4.0 L2 18 Upper Mel-Co 18.9 5.7 L2 25 Lower Mel-Co 10.4 2.8 L2 16

Xn addition to ttre culverts specified above, the tIel-Co to Barneys haul road has a number of, 24-inch culverts placed at interrrals of approximately 11200 feet apart (Plate rrr).- DraLnage area o and the Barneys Canyon watershed arb ttre on{ rvatersheds along ttris access route where culverts were designed specifically for nuroff from_the upland watershed. All designed culvLrts alreaEy installed are larger dianeter than specified above and wirl cararz nrnoff from s9orns lerger than ttre 10-year-leading events. Culverts hJve also been placed a_long ttre haul road fron the Barneys Canyon pit to ( the c:rrsher area. TrMo36-inch culierts were installed (one ilr' each - drainage ) beaeath ttre road at the entrance to the narireys Canyon- v Pit to _perait interim rfiater drainage frorn the watershelds to be occupied by ttre Pit. These culverts wiff be installed for the full lengrth of the of proJect but will convey little water following pit excavation.

o ( o

'oI

ROADSIDE DIfiCH t uut RaAD sloPE_ 27o_

r-\ BP MINERALS AMERICA Utf/ KENNEcorr BARI{EYS cANYol{ PRoJEcr \-/ S.|t Ldc Cdnrt. Ul.n TYPICATROADSIDE DITCH DESIGN

AE;,|{ Y4EI 66ISULTAHTS GROUP (o - hlt a{( C.l! ul-x xsrGN€Dtt*.^.o. tf-t-o- Io8^rrcD lo^t" 6t26/89 (

PARTIALLYFILLED CULVERT I'^ -v

r-\ BP MINERALS AMERICA \tl.H/ KEI{fl€corr BARITEYScAfiYota PRoJEcr \-/ Sdr L*. C..rtY. utrh TYPICATRAILROAD IMPOUNDMENT CROSSSECTION -r+ | ^-qA : I.EI COIISiULTAI{TS GROUP v :-I lla We esrcxgoov. lorerr€o av' IDATC: R.A.P.I c.t-.p.1 6/26/8e TYPICAL END SECTION (

-v ROAD FILL

CORRUGATED METAL PIPE

TYPICALCROSS SECTION

( o ROADFILL MATERIAL DWATER

METAL PIPE TNSIALLCULVERTS AT ORIGINAL LANDFORMGRADIENT

I-I BP MINERALS AMERICA \tl.F/ KElrflEcorr BARI{EYs cANYofl.PRoJEcr \-/ srlt L.k. co.nty. Ut.h CULVERTPIACEMENT AND DESIGN

r€SrGt{€Ogvt lOreffeO gv. IOATEI R.A.P.I c.t-.p. | 6/26/89 { ^ v

TIME OF CONCEMRATION CAIfT'IAIIONS BENrs FORMT'IA

i ^ - Time of Concentration (Kent's)

WS ldent=Barneys Canyon S

55 : CIIR\,IE NITMBER 7160 = MAX ELEV ^ 5570 = UIN ELETf v 1590 = ELEV DIF 580 = wS AREA (ACRES) 14OO = I.IENGTHOF THE LONGEST CIIA}INEI, (ft)

EI,EV CONTOI'RIENGTH LC 25 5957.5 6600 tc 50 535s 3480 LC 75 6762.5 1960 0.187856 = y 0.146161 = L, 0.243601 = Tc

WS Ident=Barneys Canyon O 48 = CUR\IE NIIIIBER 7657 = MAX EfrEV 6720 = MIN EtEiV 937 = E[,EV DfF 45.2 = WS AREA (ACRBS) 2000 = LENGTE OF TIIE LONGESTCEAIINET, (ft)

EI,Eil/ COIITOI'R IJENGTH tc 25 6954.25 1600 LC s0 7188.5 1400 rc 75 7 422.75 400 0.404513 = y 0.20407 = L 0.340117 = Tc Time of Concentration (Kent's)

WS fdent=Barneys Canyon P

65 CT'RVE NT'MBER 6s00 uA'( Etgff ^ MIN ELEV I 5520 v 980 ELE|V DIF 332 ws aREA (ACRES) 7440 LENGTH OF THE I,ONGEST cHAtINEr, (ft)

EI.,E|V CONTOI'RI,BNGM LC 25 5765 3720 &c 50 5010 4860 rc 75 6255 1440

0.169749 =y 0.595053 =t 0.975099 =Tc

I{S ldent=Barneys Canyon Q

65 CI'RVE NT'MBER 5860 ![AX Ef,Ei\r 5540 l(tN ELEII 320 Ef,g\r DIF 95 ws aREA (ACRES) 2540 I,ENGTE OF lEE I,ONGEST CEAI{NEr,(ft)

EtEV CONTOIIRLENGTH LC 25 5620 2900 LC 50 5700 3000 LC 75 5780 1740 0.146159 =y 0.266867 0.444779 =Tc Time of Concentration (Kent,s)

WS Ident=Barneys Canyon N

48 = CUR\IE NUMBER ( 7700 = MiA)( ELEV = ^ 6300 MIN EIE[/ v 1400 = ELE1I DIF 118 = WS AREA (ACRES) 3200 = LENGTH OF THE I€NGEST CHA}INEL (ft)

ELE\T COIITOI'R LENGTH T*, 25 66s0 2350 LC 50 7000 30s0 LC 75 7350 1350 0.459623 =y 0.279931 =1, 0.464719 =Tc

WS Ident=Barneys Canyon R 65 = CttR\rE NIIMBER 8436 = t{,AX EfrEiV 5475 = ![IN ELE\r 296L = ELEV DIF 462 = wS AREA (ACRES) 14820 = I,ENGTE OF TEE iOUENST CEANNEL(fr) ( EtEiv CONTOI'RLENGTH o tc 25 62L5.25 3000 tc 50 59s5.5 3950 LC 75 7595.75 3720 0.392844 = v 0.557435 = L 1.112393 = Tc

'o Trme of Concentratj_on (Kent,s)

WS ldent=Lower Mel-Co

65 = CIIRVE NT'ITBER I 7400 = MNK ELEX/ 7240 = MIN ELEV 150 = ELETVDIF o 10.4 = WS AREA (ACRES) = 2200 LENGTTTOF THE ipNeesr crrAtrNEL ( f r )

ELE|I/ CONTCIIIR LENGTH LC 25 7280 1020 LC 50 7320 1200 I.,c 75 7360 1560 0.333757=y 0.157421=f, 0.262369 =Tc

WS fdent=Uggrad. BC pit haul road '16.3 = CITR\ZENT,!4BER 7160 = MAX EtrEIf 6s00= !!IN EfrgV 650 = ET,EV DIF = 31.5 WS AREA (ACRES ) 1800 = I.,ENGTE OF 8EE I.IoNGEST CIIAI{NEI, (ft)

ELE|V CONTOTIR LENGTH Le 25 5555 1800 rc 50 5830 1620 LC'?5 599s 600 0.48340s=y 0.081793=f, 0.135321=Tc Time of Concentration (Kent's)

WS Ident=Balcneys Canyon Basin

48 = CURVE NUMBER 8600 = }fNK ELE:V = - 6340 MTN ELE[/ 2260 = ELE\I DIF v = 1430 WS AREA (ACRES) 11500 = I,ENGEII OF TEE TONGEST CEA}INET, (fr)

ET.,EV CONTOI'R LENGTH TE 25 6905 15100 rc 50 7470 26300 Tfr, 75 803s 15000 0.520539=y 0.729973=t, 1.214955=Tc

WS Ident=Barneys Canyon t{

55 = CT'R\IIE NI'}TBER 7130 = t llX ELEV 6350= TIIN ELEIT 780 = EI,EV DIF 55',.5= WS AREA (ACRES) 1800= LENGTE OF._TEE LONGEST CEANNEL (fr)

ELEit/ coNToItR TENGTH LC 25 6s45 2340 rc 50 6740 1800 LC 75 693s 1380 0.4373s8=y 0.LL7L22=tt 0.t95204 =Tc ^ f fine of Concentration (Kent,s)

WS ldent=Upgrad. BC p.lt haul road

65 = CIJRVE NT'MBER 7150 = t{AX EIJEV 6500 = I[[N EfJEiV 660 = ELEV DIF 31.5 = WS AR'EA (ACRES) 1800 = LEIIG|IE OF :tEE IIONGEST cEA}rNEr,(ft)

ErrE[l CONEOITRITENGTH LC 25 655s 1800 rc 50 6830 1520 TE 75 699s 500 0.483405 =y 0.111405 =tt 0.185674 =Tc

WS ldent=Upper Mel-Co

55 = CIIR\IE NT'MBER 7520 = l{ltiE ET,E|V 7320 = }IIN ELE|I/ 200 = ELEV DIF 18.9 = WS AREA (ACRES) L720 = LENGTII OF THE TONGEST CAANNEIJ (fr)

EIJE|I/ CONTOI'R IENGTH r,c 25 7370 1340 LC 50 7420 2200 LC 75 7470 2380 0.3s9s36=y 0.L24564 =l 0.207607 =Tc ( ^ -

'o INti'UT SUHMAF-:Y FOF;: Eartiel,s tlatry,:,rr liasirr

sToF:t'l : t.JATEF;SHED: dist =Sr::5 Type II - t4 Hr area = 1430. OiJ a€res depttr = 2.71:t incl'r*s cn = 48. OCt duratic,n = :4.O(:r lrrs t i rire C':'tlC = 1 .31(J hrS -v

OUTFUT SUMI{AF:Y FOF:: Earneys Eanyon Basin

runoff depttr O. CtzSCt? i nclres initial abstr 2. 1F-€,67 i nclres peak flew 3.98 cfs ( 0.A0276 iph ) at tirrre 2O.4Bg lrr s

INFUT SUI'IMARYFOR: Durnp.adjacent tc, pit

STORM z TdATERSHED: dist =SCS Type II - 24 Hr aree = 15.10 acres depth = 2.7O inches cn = A9.OO durratien = 24.ClO hrg tirne cotrc = 0.367 hrs

VfpUf SUMMAEY FOR: Durrrp adjacerrt tc, pit

runc,ff depth 1.63057 i nctres initial abstr O.:471'3 i rrcfres peak flaw 17. OE cfs t 1.11991 iph ) at tirrie 1:. -J47 lrrs

II{FUT 5Ut'11'lAF.:YFOF.:: Dctrrrp 6300

STORI'I : WATEFTSHED! dist =StlS Type II - t4 Hr ar ea = 2-J.61_, ar: r eg depth = ?.71:t inclres cn = 89.OO dur at i c'tr = !4. t-ttlt lrr s tirrie c,:,n': = t-t.7E]3 lrrs

OUTFUT SUI{MARY FOF:: Dutrrrp6300

rurnof f depttr I.E3Ct'37 i nclres initial abstr Cr.?47 !-t i nclres peak flow 27.ECl cfs ( O.-t4473 iptr ) at t i rrre L'.'.433 lrr s Itlf-UT SLll'lMAFiYFOF.:: Upper l'le1-f,,r ditclr/curlverts

STOF:H : T^IATEFJST{ED' dist =Srl:S Type II - ?4 Hr ar€a = 18.45 atres deptlr = 2.7Ct inches cr1 = 65. CtO (odur at i c.tr = :4 . (-lO [r r g t i rire c --,rlf = Ct. ?CJ7 [r r s

OUTFUT SUMI{ARYFOR: Upper Mel-Cc, ditctr/culverts

runc,f f deptlr o.37993 i nches initial abgtr t . o7a92 inclres pealr flow 5.7Ct c f s ( o.30005 iph ) at tirrre L?.OB9 lrr E

INFUT SUMMARYFOF:: Lower Mel-Co ditclr/culverts

sToRt't : WATERSHED : dist =SCS Type II - 24 Hr ar€a = 1Ct.4O acres depth = 2.7O inches cn = 65. OCI duration = 24.OO hrs tirne collc = CI.2€,2 hrs

(Q"rt surllrAqyFoR: Lc,wer Met-tr,=ditch/curverts

runr,f f deptlr r_r.37593 i nrlres initial ebstr L.Cr7A9? i nches peal': f l c,ur :.81 rfs ( o.26839 iplr ) at tirrie 7i;-.7iJ2 hrs

INFUT SUMMAF:YFOF:: Upper Btr pit lraul rc,ad

STOF:M : IfATEFISHED ! -.'4 dist =StlS Typc. II - Hr ar€a = 31.50 a':reg depth = 2.7Ct inctrg.s C11 = €,5. t-lo dutr at j. c,tr = !.{. tlttlt hr s t i rrie ': t:'t1c = O. l Bg lrr s

OUTFUT SUMMAF.:YFOR: Upper Ftl: pit lraurl raad (orutlr-,ff depttr Ct.373-Ji i trclres itritial abstr L.Q7A92 inches peak fl.=w 9.9O cf= ( (r.31160 iPtr ) at tirrre 1=. 06-, lrr s INFUT SUI'1MAf.:YFOF.I: Dutrrrp G5(J(J

STOF;M : T.JATEF:SI{ED: di st =Sr:S Type. I I-34Hr ar ea = 1.+.CrO ac r €5 depth = 2-7Cl i rrclres cn = Elg. CIQ oi::::1::= t{. tltt-l hrs t i nie can€ = (J.463 lrrs

OUTFUT SUI'|MARY FOF:: Dunrp 65OC,

runof f deptlr 7.F-3{J97 i nclres itritial abstr o,247 t9 i trclres Peak flc,w L7.34 cfs ( 1.24?32 iplt ) at tinre 12. LEL hrs

INFUT SUMI'IAF;YFOF:: Durrrp 6500

STORM : WATEF:SHED ! dist =SCS Type II - 24 Hr area = 14. CrCt acres deptlr = 3. OO i nches cr1 = 89. tlO duraticrn = ?4.QQ hrs t i rne cr3tlc = O. 463 lrrs

't"u, suMHAFTYFoFr: Dunrp6soct

runaff depttr 1.99983 i trc lr*g initial abgtr o.3+7L9 i nchee peak f I or^' 2(-1.43 cfs ( 1.44754 iptt ) at tirrte 1:. 161 t'irs

INFUT SUNf'{AFIYFOR: Dunrp 6500

STOF;M : TJATEF:SHED: dist =SC:SType II - ?4 Hr ar eei = 14. (J(J ai: r eg deptlr = 3.7Ct itrclres cr-r = 89.(:rO dur at i orr = !4. t-tt:t lrr g tirire c':,ilc = Q.463 lrrs

OUTFUT SUMHAFiY FOI--.:: Durrip 65t-ttlt

run.rf f deptti 2.54=69 i trc lres itritial abstr Cr.247 t-j i nches peak flow 27.27 cfs ( L.93L73 iptr ) at tinre 13. 161 frr s Il.lFUT SUl"ll'lAFiY FOF.I: Eiarrreys Carir-,:r, t{

STOEH : T,JATEF:SHED: dist =SES Type I I-24Hr area = llE}.CtLt acres = a'.7(7 i rrc[res cn = 48. tl0 ( depttr O dur at i arr = 24. O(_l trr s t i rrie cr3pf = Ct.465 lrrs

OUTPUT SUMNARY FOR: Bartreys Cany,=tr N

run|-af f deptlt rl. O25O2 i nclres initial abstr 2. LA6AT i nclreg peak flow o.34 c f s ( O. OO2BB iPtr ) at tirne 20. O88 ]rrs

INFUT SUMI''IARYFOR: Barneys Canyon N

STORM ! WATERSHED: dist =StrS Type II - 24 Hv area = 118.OO acreg depth = 3. OCt i nclres c]r = 4B.OO durat i on = ?4. 0O trrs t i rrre cc.tlc = O.465 lrrs

( tef*u, suMNAF:yFot-':: Eartreys Earyc,n N

rurrc,f f deptti r-!.0595" i trrlreg irritial abstr 7- LEAAT i t'rct'ieg pea[': fl'=ur (1.78 c f s r. O. CtO654 iplt ) at t i rrre 15. 1gO lrr s

INFUT gUMf'lAFiY FOFI: Earneys tlar,yrrn tl

STOF;H : I.JATEF:SHED: dist =SLIS Type II - 14 Hr ar €.a = I 18. (J0 ac r eg depth = 3. 7tl i nclres cr1 = 4f}. CrCt dur at i on = t4. tlr0 t'rr e t i rrie c t:rn': = Q. 4€,5 lrr s

OUTf'UT SUI'IMARY FOl--;: Barneys Llanyc,rr N

run€'f f deptft o. 1go1? i nctres irritial abstr 2. LAA67 i nches peak fIc,w 4.85 cfs ( A.Cr4O74 iptr ) at tinre L?.7LCI lrr s INFUT SUl.ll1AF:YFOfi: E:arneys rl:arry.,:n O

STOF{M : T^,ATEFjSHED: dist =StlS Type II - ?4 Hr area = 45.10 af,res = = ( deptlr 2.7(r inclrs.g .:n 48. CtO dur at i arr = 24. t-r0 lrr s t i rrie r:L-inc = O. 34Q trrE O

OUTPUT SUMMARY FOR: Barneys Canyotr O

runc,f f deptlr O. O25Cr2 i nclres initial abstr 2. L6Ae7 i nches peak flow O. 13 cfs ( CI.OO291 iptr ) at tircre 20. OBg lrrs

INPUT SUMt'lAFdYFOR: Barneys Canyon O

STORM : TTATERSHED: dist =SCS Type II - 24 Hr area = 43.2Cr acres depth = 3.OO inches clr = 4B.CIO duration = 24.rlo lrrs t i rrre €or1tr = O. 340 hrs

( sul,tHARy f,'"u, FoF:: Earneys canyc,rr o rutl'3f f deptlt C).Cr595l inrlres itritial abstr 2. LAE67 i nrlres pea[,: flaw O.3O cfg ( O.t)06g6 iplr ) at ti rne 73. Q'JE frr s

INFUT SUMMAFIYFOFI: Earneys Earryotr 0

STOF:I'I : I^JATEF;SHED: d i st =SrlS Type I I - 24 Hr area = 45.:Q acreE deptlr'= 3.71-, irrches cri = 4fi. (rril dur at i crrr = 14. CIC) lrr s tirrie cr,lr': = tJ.34O lrrs

OUTFUT SUMHAf.;YFOI-r: Earneys Earryc,tr 0

runc,f f deptlr C,.1g(r1? i nrtres irritial abstr 2.7€687 i trclres pealt flrw t.B7 cfs ( O. OjllO? i ptr ) at tirrie L?.337 hrs Il'.lFUT SUf'1MAF;\' FGF.i: Barrieys Catryon F

STOF;H : I.JATEF;SHED: d i st =srls Type II - !4 Hr ar ea = 332. Crr_r ar r es ( depttr = 2.7{t i nches cr1 = 95. OO t duratic,rr = ?4. CttJ hr s t i lrie € r-.nt = t:t.973 lr r s rt

OUTFUT SUi{I4ARY FOR: Barneys Canyr:tr F

runc,f f depth O. 37593 i nclres itritial abgtr L.O7E92 i nclres peak flc,w 4C).29 c fs ( 0.1?036 iph ) at tinre L2.74O lrrs

INPUT SUMMARYFOFi: Earneys Eanyon F

sToRf't : I",ATERSHED : dist =SCS Type II - 24 Hr area = 332. Otl a€res deptlr = 3. OO i nches cn = 65. OCt duratian = 24.0(t lrrs tinre conc = Q.973 hrs

O*u, suHr4AF:yFoR: Barneys Eanyc,n p

rLtric'f.f deptl'r O.scrge7 i nrlres itritierl abgtr t. t)7F-'g:l i trches peal': f I ,:'w 59.83 rfg ( (r. 17a72 iplr ) at tirrie 1?.74O lrrs

INFUT SUMI'IAF"'YFOFI: Barneys Earryc,n F

STOF;M : I^'ATERS}{ED: dist =Srl:S Type II - 24 Hr ar ea = 331. t]t] atrr es depttt = 3.7Ct itrclres Crl = f;,$. (t(t durat i c,ri = 14. t-tt-t lrrs t irrie ,:arlc = Ct.'-J73 [rrs

OUTF,UT SUMMAFiYFOF;: Barneys [:any,=n F

c!.959:4 i trclres otffil:,':E:';, 1.Ct7A92 i trc lres peal: f I oqr 115.68 cfs ( 0.34554 iph ) at tirrie L2.74O lrrs It{FUT SUI'IMAF;Y FOF:: Fa.rne-ys rl:arryc,ri G!

STOF:r'l : I.JATEF:SJI-IED: dist =Sr:S Type I I-34Hr area = 96.Ct0 atrres ( deptlr = 2.7Cr inclreg cn = 65.OO O durat i c,rr = i4. tltl hrs t i rrie ctrrl': = t-t.4'15 lrrs

OUTPUT SUI'II'IARYFOR: Earneys Canyon Gl

runoff deptlr O.37593 inches initial abstr 1.u.7692 inches peak flow 19.15 cfs ( O. L97eE iph ) at tinre L2.2BZ lrrs'

INPUT SUMI',IARYFOR: Barneys Eanyc,n A

STORl"l z T^'ATERSHED 3 dist =SCS Type II - 24 HY area = 96. Otl acr es deptlr = 3. OO i nclreg cn = 65.00 duration = 24.OO hrs t i rne con€ = O. 445 lrrs

O**t suHNARyFoR: Ear'eys cany,=n o

runl.f f depttr Ct.5(J6(:)7 i trtl-res itritial abstr L.Ct7697 ittcltt-"s peak f l,=ur 28. 64 c fs ( 0.:9591 iplt ) at t i rrie 1-J. =8? tir e

INPUT SUMMAFiYFOF;: Barneys Eanycrr G

STOFJN : I.IATEF.:SHED: dist =StlS Type II - ?4 Hr ar ea = 96. e(:! af,r es deptlr = 3. 7(! i rlcl-res Cl'l = 85. f-r(, dur at i urrr = ?4. Ct{t lrr s tirrie €.:,t-.r;= Q-4.+5 lrrS

OUTFUT SUMf'lAf-.:\'FOF:: Earneys Eanyrrn O

rLrtl':rf f depttt O.859{*4 i trclres itritial abstr t.crTega i ncfres peal': f l,rur 55. 33 cfs ( Ct.37tAL ipti ) at tirrie L:'.2?3 lrrs It{f-UT SU|'1MAF;Y FOI--;: tiartreys Canyc'n f-i

STOFit'l : T.,ATEF:SHED: di st =StlS Type I I-24Hr ar ea = 46:. O() a,:r es ( depth = ?.7r7 i nrlres Cr-l = 65. Ot_t durat i .ir, = !4. t)O trr s tirrie r*rrc = 1.11t lrrs - 17

OUTFUT SUtltlAF:Y FOR: Earneys Canyotr F;

runc,f f depth Ct.37593 i nches initial abstr l. t"r^7492 i nclres peak f I c,w 51.4C1 cfs ( O.11034 iph ) at time L2.A99 hrs

INFUT SUMMARYFOE: Earneys Canyc,n R

sToRH : WATERSHED : dist =SCS Type II - ?4 Hr area = 4g?. Crtl atrres deptlr = 3. OO inclres crl = 65.00 duration = 34.OO lrrs tinre ctrrlc = 1.112 hrs

(

O"rt sullttAey FoR: Earrreys Eanyen F..

rurlr-rff deptl-r 0.5CI6e7 irrclres initial erbstr 1.t7A-i? incl.r*s peak fl,rw 73.7A cfs (: C).t1?6e ipt-r ) at tirrre 72.A-i9 hrs

INFUT SUMMAF"YFOFI: Eartreys C:anyerr R

sToFiH : T,,ATEFjSHED : dist =StlS Type II - "r4 Hr area = 4€,t. Ot_t a':res deptlr = 3.7Q inclres cn = €,5. CxJ dur at i c,ti = ?4. Crf_r trr s tirr',r+ ':r:,tltr = 1.11: lrrS

OUTFUT SUMI"IAFIYFOF.;: Barneys Eany,:n R tjlffil:,':i:';,' cl. BS9:4 i nclres 1.Q76-Jz i nclres ', pea[: f lor,r 148.87 cfs ( Ct.3L937 iplr at time L?..73L lrrg IIIFUT SL,MfiAfiY FOF-;: f'ts.rrleys Ilatryarr 5

9TOFit4 : I.JATEF:SHED: dist =Srl:S Type I I-?4Hr ar ea = sEl(_l. (:x-r a€ r eS deptlr = 2.7Q i trches cn = 65.OO -/44 durat i c,rr = !4. tJt-t lir s tirrie cFi'lc = O. trrs

OUTFUT SUI'IMARY FOF:: Barneys Canyc,tr S

runc'f f depth o.37593 i nches initial abstr t . U.7692 i nclres peak flsw 162.4C1 c f s ( O. 277AA iPlt ) at titrie 12. 1O2 lrrs

INFUT SUI'IMAF:YFOR: Barneys Catryotr S

sToRl'l : WATERSHED 3 dist =SCSType II - 24 Hr area = 5gQ. r)Ct acres depth = 3. OO irrches cr1 = 65. OO dur at i ott = 14. CIC) l',r g t i rrre cc,tl€ = 0.244 lrrs

/_

-[FUT SUilt'lAF:Y FOF:: Earneys E:any6p S

r uttr,if f dept lt (:,. 565rr-17 i nclreg itriti.rl abstr i.t76-J2 i nci-res ':38. peall f l,:,w ?9 cfs ( CI.4Q744 iPtr ) at tir,ie 1-.',10: lrr s

INFUT SUt'll'lAFjYFOF:: Eartreys f:any,:,tr S

STOF:M : I.IATEFTSHED : dist =StlS Type Ii - 34 Hr area = sgtl . OO arres depth = 3.7Ct irrclres crl = 65. t1O duratir-rtr = ?.1. t-ti-t lrrs t i tne r:'ftttr = O. t44 lrr=

OUTFUT SUHMAFjY FOF:: Fartreys tlatry,=tr S

run,:,ff deptlt t_r.85914 i trclres itritial abstr 1 - CrTE-tZ i trc lr es peak flaw 438.83 cfs ( CI.73it33 ipl't ) at tirrie L'r.. LOZ lrrs APPENDD(E

GRADING FOT'NDATIONSPECIFICATIONS BP MINERALS AMERICA BARNEYS CANYON PROJECT Salt Lake County, Utah

T9CHNfCAL SPECIFfCATfON- No: 87105-01

STTE WORKS

LEACH PAD AND POND CONSTRUCTION

ACCESS ROADS

PREPAREDBY: A. PATWARDHAN MTNE AND MILL ENGTNEERTNG,INC. June 27, 1988

Reviewed: Paul Kaplan - (SHB)

Zip Zavodni - (BPMA)

Robert Parker - (BPMAI

Approved: BP M:nerals America

lrtlll rfrlll rtllll

Rel.eased for Construct

Revis:ons 3P MINERALS AMERICA BARNEYS CANYON PROJECT o SALT LAKE COUNTY, UTAH rNDEX

SPECIFICATION FOR STTE WORKSLEACH PAD AND POND CONSTRUCTION ACCESS ROADS

SPECIFICATfONNO: 8?1O5-O1 PAGE

1.O SURVEY 1

2.O DEFINITIONS OF MATERIALS 1

3 . O CLEARING, GRUBBIT{GAND STRIPPING 2

4.O EXCAVA?rON 3

5.O STOCKPILING 5

6.0 BACKFILL MATERIATS 5

7. O PLJICEMENTOF BACKFTIL 9

8.O DRAINAGE AND WATER CONTROL t2

9.O ROAD MAINTENANCEAND DUST CONTROL 13 o 10.O CONTRACTOR'SQUALITY CONTROL 13

11.O INSPECTTON AND EVALUATION OF TiTORK 13

o BP MINERALS AMERICA BARIIEYS CANYON PROJECT SALT LAKE COUNTY, UTAH

SPECIFTCATTON FOF. ST?E }'ORKS LEACH PAD AND POND CONSTRUCTTON ACCESS ROADS

1.O SURVEY

1.1 The Contractor wiLl establish the control, lines based on benchnarks and nonuments shown and shall be responsS.ble for all surveying to control the work.

1.2 All su:rvey work will be subJect to checking by the Owner I s Representative.

2.O DEFINITTONS OF IIATERTALS

The naterials for earthwork and enrbankment construction are defined in detail as fol,lows:

2.7 Rock: A solld nass of material exceeding one cubic yard in volume, which cannot be effectively loosened or broken down by rlpping in a single pass with a late nodel dozer mounted hydraullc ripper equipped with a single digging polnt; of standard manu- facturers desigm adequately slzed for use with and rated at a rninimun 41O-net flywheel horsepower operating Xl low gear.

2.2 Soll: The superflcial of unconsoJidated or partially consolidated naterial that nearly eveglnrhere covers the rock rnay be of natural or man- nade origin (fil]).

2.3 Soil Components:

2.3.1 Clay: Plastic sol,l whlch passes a U.S. Standard *2OO sleve.

2.3.2 Silt: Nonplastlc soll whlch passes a U.S. Standard #2OO sieve.

2.3.3 Sand: Solid mineral grains whlch Pass a U.S. Standard #4 sieve and retained on a #2OO sieve, non cohesive. o 2 .3 .4 Gra.zel : Sol.id ni::e:al.::asses which are retained on a U.S. Standard #1 sieve, and are Less than three inches in maxinum dimensions.

2.3.5 Cobbl.es: SoliC mineral. rasses which are not greater than 12 inches but are larger than three inches in rnaxiroum . dinensions.

2.3.6 Boul.ders: Solid nineral llasses which are not greater than one cubic yard in volume, but are larger than t2 inches in naximum dimension.

2.4 Topsoil

For purposes of this Speclfication, topsoil shall be defl.ned as soil of any gradation or degree of plasticity which contains slgnificant quantities of visually-identl,fiabl.e vegetative matter, sod, roots, or humus. As a miniynun, the upper six inches of soil below the natural. ground surfaCe shar,J. be considered topsoil- Topsoit depths sharl be as defined in the Geotechnical. Report, o! as defined by the Ownerfs Representative. Topsoil as defined herein is not suitable for use as courpacted eubankment filr rnaterial,, and shal,l be stripped frorn all f oundation surfaces.

3.O CLEARTNG, GRUBBTNGAND STRTPPING

3.1 Clearing, grubbing and stripping shal.l be perforned as reguired and as directed by Ownerts Represen- tative.

3.2 clearing will, censist of removal and dlsposar of alt trees, brgsh, logs, Limbs, wood, grass, rubbish, structures and all other obstructionJ resting on the surface of the original ground. Also incl,uded ls the removal of brush and grass root rnaterial which compose approxirnately the top 6 inches of surface naterial in some non-agricultural areas. UnJess otherwise shown, clearingr shall be perforned within the foll.owing linits:

Within the linits of and 10 ft. outside the linits of the excavation, fills and stockpiles. Along roaCways 30 feet mjnirnun on each side of the center .l ine or 5 f t. beyond the cut shoul.der or toe of f i11.

3,.3 Grubbi.ng will consist of the renoval. and disposal of all'stumps, buried logs, stubs and roots large= than 7-t/Z inch ln dianeter within the areas cleared to a depth of 2.O f eet below orS.ginal ground. glithin areas to be f:.1,1ed, stunp holes and depressions shal.I be backfilled and compacted. Within areas to be excavated, stunp holes may be left open.

3.4 Stripping will consist of the removal of the topsoil as defined in paragraph 2.4.

3.5 All clearing, grubbing and stripping operations shal.l include the preservation from injury or defacenent of a]l. trees, vegetation and objects Jocatcd beyond or outside the work lirnits.

4.O SXCAVATTON

4 . t Scorre of Wot&

This Specification covers the required excavation, the removal and ptoper utilization or disposal of all excavated material and the shaping and finishing of afl excavation work to the reguired lj.nes, glades, and cross sections as shown on the drawings.

4.2 Cl,assification of al.l excavated materia.l.s shall be incl,uded ln the following:

a. Cornnon excavation shal] include a]l materials except those defined as rock or topsoil.

b. Rock excavations include all, material.s which cannot be removed as def ined .ln sectlon 2. t except by blastlng and al,t detached aasses of this material exceedtng one cubl,c yard each. The presence of such boul,ders or rock fragnents shal,l. not ln ltsel,f be considered suf f icient cause to change the cJassificati'on of the surroundlng naterial.

4.3 The cl.ass of excavation shall be determined by the Owner or its designated representative on the basis of his determination of the character of the materials to be excavated and the prevailing site conditions. 'o 4.4 Suitable e::cavated nateria]s shalf be util'ized in backfills. Unsuitable or excess excavatecl materiaf shal.- be disposed of at waste locatj.ons :ndicated by the Owner's Representative.

4.5 Pockets of unsuitable materials within the linits of excavation shal.l be renoved and wasted. The excavation shall be finished to the l,lnes, grades, and typicat sections shown on the drawings ot as directed by the Owner's Representative.

4.6 The nethod of excavation shall not weaken surrounding areas or danage structures or parts thereof that are conpleted or under constructlon. Existing structures and util.ities adjacent to excavations shall be protected and supported to prevent settlement.

4.7 During grading operations, the surface of the excavated area sha.ll be maintained in such condition so as to ensure adeguate drainage. Water in excavations shal,l be control,l,ed and removed. D5.scharge from pumps shal,l be wasted at Jocations as directed. Springs or seepage encountered shall' be reported inmediately and controJled as directed.

4.8 After lnitial clearingr and grubbing, excavation of any softer soils to the contact of relatively firn soils shal.l. be performed only at the dlrection of the Ownerrs representation. If required, overexcavation shall be perforued in ernbankroent foundations and base areas for the Jeach pad, ponds, a:rd perirneter dike found,ation areas. Confirmation of adeguate sub- excavation and exposure of firn soil,s shall be made by the Ownerts Representative

4.9 Except as otherwise showtr, gradi.ng tolerances shaLl be zero to Binus o.1 ft. for horizontal, and sloped planes of common excavatlon and zero to minus O.5 ft. for borlzontal and sloped planes of rock excavation. Rock cut 'slopes shall be seal.ed of all loose rocks and f ragrnents, and lef t ln a neat,' saf e and worknanlike condition.

-(a 5.O , STOCKPILING

5.1 Dif f erent cf asses of backf 1ll, rnaterial shaLl be stockpil.ed separately at designated areas. Stock- piled mater-:,,als incl.ude topsoil, comn,o:tbackf il.l, select backfill, sand.backfill, and unsuitabJe mate- rial,s. Classif ication of these rnaterials shall be in accordance with Section 2.O and shall, be performed by the Ownerrs Representative.

5.2 Stockpiles and unsuitabl.e material,s shall be placed in such a manner to provide natural, drainage and a stable embankment.

5.3 Stockpiles shall be constructed with a rna:rimumheight not exceeding 40 ft.

6.0 BACKFTLTMATERTATS

6.1 Backfill, naterj,al,s slrall be obtained fron required excavat ions and shall. be f,ree f ron deJ.eterious substances such as expansive cJ,ay, snow, ice, frozen giround, rubbish, organic, peri,shable or uDcomPactabl,e material, .

6.2 When backfill materials Fre not available fron reguired excavations, these materj.als sha.}l. be obtained from borrow pits at locations shown or as directed, o! frorn off-site soutces. Backfill mater ial,s shall include coBtron backf il.l , select backfill, pervious backfil,l, irnpervious backfill, and sand backf il,l..

6.3 Connon backfill. materials shall conform to the foll.owing reguirements :

a. Maximun size rock sbal,l be no larger tban the layer thickness.

b. Plasticity index when tested in accordance with ASTM - D4318 shal,l be Less than 15.

6.4 Sel.ect backfill naterials shafl conforn to the following requirenents .

a. gfhen tested in accordance with ASTM D422, naterial shall. be well graded witb 1OO percent less than six inch size and a naxirnum of 15 percent passing tbe No. 2OO sieve. -O b. Plasticity inCez when tested in accordance w:.tl ASTM- D4318 shalt be less than 15..

6.5 Pervious backfill. (general. usage) to be used as a dlainage nateri.al. as :nd:cated on the drawings shall be a free draining naterj.al consisting of rounded,, hard, durable and touglh stone or grave! conforning to the f ol.l.owing gradations:

Sieve Size Percent Passinq

2-L/2 inch 100 l-L/2 inch 80-96 100 7/2 inch 58-?4 50-80 No. 4 36-52 30-65 l{o. 40 9-17 10-30 No. 2OO o-3 o-3 6.6 @, to be used where specified as a bl'anket roaterial to protect menbrane Liners shal,t be non-plastic clean sand, free of clay, organlc matter and other deleterious material.

lhe drain sand nateria.l. to be specifically used in the Leachate collection and Recovery systen.(r.cns) either on leach pads or Leachate retention pond,s shall conforn to the foJ,lowing requirements:

Sieve Size * Passinq bv l{eicrht

3/ 4 inch 100 t/2 inch 100 No. 4 50-100 No. 40 20-70 No. 2OO o-5 Plasticity Index: Nonplastic Perneability: K = 1 x 1O-3 cnlsec 6.7 s ! (Where Appfi-E e )

Sand shal,l be fine, clean, granul.ar material wlth at least 95S of material passing a #4 sieve. It shall be thoroughly saturated with a hearry oll at a rate of approxitratel,y L/2 gallon per square foot of sand,. The oil shall have a viscosity of not less than gOO SSU at L22 degrees F. Cut-back asphaltsr Der! also be used, provided that the rate of applicatlon is increased to approximately 3,/4 gallon per sq. foot of sand and the tank botton plates are placed within 48 hours after nixing the sand and asphalt. -O 6.8 fn_p-ervious backfifl. for .l.each paCs, feachate collection ponds, milf catch baslns and reJ.ated water retention areas shal.L mea,n natur;rlJ.y occurring naterials , rnechani caJ!y :nod,:fied as needed and conforning to the following $pecifications. All naterial shall. be cj.assified according to the Unif;ed Soil Classification Systen (USCS) and must neet one of the following classificatj,ons: CH, CL. M8, ML, or SC. The Ovrnerrs Representative may allow deviations frorn these specirications if, in his judglenent, the naterial wil,1 perf orn equal to or better than the specified material, fcr the intended use.

Materials:

Alt naterials used ln the ccnstruction of clay liners shall. couforrn to the following requirements.

Sleve X Passing by lleight Size

3 inch 100 No. 4 50-100 No. 2OO 25-100

Pl.asticity Index: 2O min (as per ASTMD4318)

Material.s which do not meet these crl,teria will. require addition of commercJal grade bentonite to reduce perneability.

The site clay sol,ls shall be blended with a minimurn of 1 percent bentonite by weight ln either a powdered or sand sl,ze granular forn.

lhe bentonite shall be placed over the surface of a unl'forn 8-inch loose thickness of soil spread over the area of the soil liner with dlstributor equipnent capable of controlling the rate of apptication. Thorough nixing of the soil. and bentonite shar.] tben be perforned usl,ng a disk, rotary hoe, rototiller or sinilar eguipnent to uniforrnly blend the bentonite and soiI. The b!ended uaterlal shall then be noisture conditl,oned to near optimun noisture and compacted with a sheepsfoot-t1pe roller to a minimum of 95 percent of the maximum dry density as deterrnined by ASTM D1552. subseguent lifts shal,l be placed, b.l.ended and compacted in a simil.ar manner.

7 The contractor shafl be respons:b1e for malntaining the soil, Liner at optimum noi,sture content until, the liner is placed. Any area which becomes dry or desiccated shall be scarified, rnoisture conditioned and recompacted.

Bentonite utlfized for the soiJ. liner shall be a commercial gradr: sodium montnorillonite naterial with a minimum free swell. index of 1oo. The material. shal'l have a liguid lirnit of g'reater than loo and a prasticity index of greater than go, when tested in accordance with ASTM D4318.

5.9 Rip-Rap

Rip-Rap shall conform to the following reguirements:

Sieve Size * Passinq bv 9feicrht

18 inch 90-100 9 inch 40- 60 No. 2OO o- 72

6.10 Wear Course

Materiar generally refered to as the wear course for access and plant service roads including parking lots shall be bank run screened nateriar or Crushea mine waste rock free of clay.

Al,l naterial, shalJ, rneet the foll.owing requlrements:

Sieve Size S Passinq bv Weisht

3 lnch 100 l-l/2 inch 95-100 3/4 lnch 80- 90 t/2 inch 70- 80 No. 4 50- 50 l{o.16 25- 35 l{o. 2OO 5- 10

The percentage of wear when subjected- to the Los Angeles abrasion test (Asll,t C1g1) shall. be no Dore than 4O.

The percent loss when subjected to the sodium sulfate sound,ness test shal.l be no more than 12. 6. 1,1 A11 backf i 11 shal. f conf orn wi ihin the to Le=3-ces specif 1ed to the lines, g=ades, sections ;rnd elevations shown.

6 .12 Except as otherwise shown , grading tof erances sia.l I be plus or minus o.2 ft. for all exposed surfaces of backfill.

6.13 Backfitl materia]s shal.l not be placed on snow, ice or f rozen ground surf aces. Al.1 excavations to leceive backfill shall be cleaned of al.l trash and debris. All f oundations for embankments shal'l' be f ree f rorn any organic rnatter. All f oundation I excavat ions srrar r be approved by the owner s Representative prior to placing any filt roaterial.

7.O PLACEMET{TOF BACKFTTL

Enbankrnents and fitls shall be constructed to the Lines and grrades strown on the constructlon drawings.

The fift shatl, be placed in approxiuately horizontal, layers not exceeding eight inches in Joose thickness. The distribution of material,s within the fill shal,l. be such that no I'enses, pockets, or streaks of materia.I d'if fering substantially in gradation or texture from surrounding materia] in the fill zone exist. The various fill zones in the embankment shall be carried up together such that the surfaces of the zones at adjacent sections do not vary in o of the elevatl,on by Dote than three feet. If the surface fill becones too dry or bard to permit suitable bonding with the subsequent layer, the naterial shall be Loosened by scarifying or disc harrowingr, noistened, and recompacted before an additlonal ltft ls placed. Under no cl.rcunstances shall any fill be placed in standl'ng or ponded water. Fitl shall, not be placed upon a frozen surface, nor shal.l snow, 1ce, oB frozen soll be lncorporated lnto the fill. During constructlon, the surface of the fill shall be nal,ntained with a cro$rn or cross-slope that witl ensure effective surface drainage.

I{trere fill is to be placed against existing slopes steeper than 6 to 1 (horlzontal. to vertlcal), the slope shall be benched at least I feet horizontally. for every 2 feet of fill height so as to prevent a weakened sflp plane between the fill and natural ground.

o t','l P::lish Gradinq Tolerances

Finish grading and excavation shall be perforned to within plus or minus O. 1 f t. of the Lines, grrades, elevations, and sections sbown except that subgrades of roads and parking areas shal.l be graded to within O.OS ft. of the Jines, grades, elevationsr iDd sections shown.

7.2 Moisture Control

During the cornpactj,on operation of all filt materia.l, the surface of the fil.l and the material being placed wil,l be rnaintained within the moisture content r€rnge requLred to peruit proper conpaction to the specified denslty. lhe moisture content will be distributed unifornly tbroughout each layer of fill. Average placernent moisture wil,l be at or slightly above the optimum mol,sture content. The moisture content during compaction shall be naintained within the linits of lX beJow to 3t above optimum uoisture content as deternined in accordance with ASTM D155?. Any material cornpacted drier than this will be scarif ied r lnoisture conditioned to tbe propet noisture content, and reconpacted,. Material. to be aerated by bladlng, discing, harrowing or as apprcved to hasten the drying process. Conpaction tests wilJ. be made by the Owner t s Representative durlng the placement of the fill, and optimuu moisture and Morinun Dry Densities will be determined. Iilater may be added to the material. by sprinkling on the placed fill material, and shall, be mixed unifornly throughout the lay'er innediately prior to conpaction. ff any admixtures are used, the optluum noJsture content and Maxl,rnum Dry Density will be deteru,ined witb tbe admlxtures in the sol,l.

Compaction tests will be made by the Owner I s Representative during placenent of the filt. fn place testing of compacted fills may be perforned by the l{ucl,ear l'lethod in accordance wlth ASTM D3O17 and ASrM 2922.

o 10 ' 7.3 Compacticn

The Contractor shall furnish and operate the necessary t'/pe of eguipment required to obtain the compacted density specified here:n. After each layer of fill naterial has been placed and contains the required ruoisture content, it shall be compacted by passing com.gaction equipnent over the ent:re surface a sufficient nunber of tines to obtain the density specified. Tests of original ground, fill, ernbankrnent, and soil liner materials wi]] be made at the foll.owing suggested mininun rates:

1) One field denslty test for each 15OO square yards of original grorrnd surface prt,or to placing fill or f.loor slab constlucti.on.

2't One field density test for each 5OO cubic yards of fill placed or each layer of fill for each work area,,whXchever is the greater number of tests.

3) One moisture-density curve for each type of material, used, as indicated by sieve analysis and plasticity index.

2.4 Each layer of comnorr backfill, select backfilf, pervious and impervious backfill., and sand backfil.l, sand cushion mix and wear course shall be coropacted to 1rot'forth Jess than the percent of maximurn dry density set bel.ow:

Percent of Maxinun Drv Eaqkflll Materlal Densitv to ASTMD-15.9J

Conmon Backflll, 90 Sel,ect Backfill 95 Pervious Backfill 90 Inpervious Backflll 95 Sand Backfill 90 Sand Cushion Mix 95 I{ear Course 90

-o 11 ,?.5 Special attention must be given to areas des:gned as heap leaching pads and so.lut lon containrnent ponds protected with synthetic nembranes. AlI such surfacss which shall come in contact with these liners, shoul.d be f ree of al.f angrular gravel, gravel over t-t/z inches, sticks, rcots, sharp objects and debris of any kind.

7.6 Improvenent to existing roadways, shoul,ders, parking Jots as indicated on the desigrr drawings shall be undertaken as foJ.lows:

The upper 6" shall be thoroughly broken up with a disc plow or harrow and the soil, recompacted with water addition to 90 percent of maximum dry density as deternined by ASTM D1557.

7.7 Wear course shall be a norainal. I' thick, spread and cornpacted to 90 percent of rna>cimumdry density as deternined by ASTM D1557.

8.O DRAINAGE AND WATSR CON?ROt

8.1 Pipes for culverts shall be as shown on drawings. Material and tnstallation requirements for culverts shall be in accordance with specification for "Supply and Instal lat ion of Culverts and Miscel,laneous Drainage ltems,,.

8.2 Contractor shal,l take Deasures to control soil, erosion frorn the construction areas for the duration of the Contract. Such Deasures shall include berms, dikes, dams, sediment basins, fiber Bats, netting, gravel' mulches, ettasses, sloPe drains and other erosion control. devices or methods.

8.3 gfater in excavattons shall be controlled and removed. Discharge fron purps shall be wasted at locations as directed. Sprlngs or seepage encountered shall be reported lnnediately and controlled as directed.

8.4 Contractor shall, maintaln ln a clean and sound condltion all cul,verts, ditches and temporary dralnage features for the duration of the Contract.

L2 9 . O ROAD MA:N?ENANCEAND DT'STCO}I?R!L

9.1 Contractor shall ensure that roads c:ossing and to the site are kept passable and shall be responsible for repairlng damage to these roads caused by its . operatibns. Repair materiaJ.s and workrnanship shall' conform to the existing construction.

9.2 Contractor shall perf orm al.l. work in such a Banner as to nininize fugitive dust emissions, including but not necessarily linited to application of water to roads. Fail.ure to contro.l fugitive dust enissions could result in a stop worl< order from the State of Utah, Salt Lake County, o! the Ownerrs Representative until adequate control,s are instituted. Such work stoppage shal,I not relieve the Contractor of its contractual. responsibilities nor be cause for claims against Owner rs Representative.

10.O CONTRACTORISQI,ALTrY CONTROL

10. 1 Withtn 20 calendar days of Contract award, Contractor shall subrnit for approval its Project sPecific quality control, proglan. The progran shall inc.lude the following data.

10.1.1 Surveying Specify eguipnent to be used and 'general procedures to be followed.

10.1.2 Cornpactlon Contractor shall subuit aD acceptable plan to achieve fill compaction as specified herein. The plan shall include Proposed eguipment and procedures for rolling and noisture conditioning.

to.2 Contractor shall desigrrate its representative with dl,rect responsibtllty f or quality control.

11.0 TNSPECTTONAND EVATUATTONOF 9IORK

11.1 lhe work will be inspected ln progress as well as at completion of various operations by the Ownerrs Representative as foJ,lows:

11.1.1 To inspect and approve foundation surface prior to placernent of f ill.

o 13 lL.L.2 To arrange for in-place densS.t'1rand moisture content tests on compacted fitl to verifY confornance to this specification and anY other field or laboratorY testing as may be required.

-o l4 APPE}'TDI'(F

LINERSPEdFICATIO}TS BP MINERALS AMERICA BARNEYS CANYON PROJECT . Salt Lake County, Utah I -..-.:'. : '. o

TECENICAL SPECfFfCATION - No: 8?1O5-O4

HTGH DENSITY POLYETHYIENE LTNING

(EDPE)

PREPARED BY: A. PATWARDIIAN MTNE AND MTLI ENGINEERING, INC. June 28, 1988

Reviewed: Robett parker - (BPMA)

Paul Kaplan - (SHB)

Z. Zavodni - (BPMA)

Approved: BP Minerals Amer

tl

; v BP MINER.ALS AI{ERTCA BARNEYS CAI{YON PROJECT : SALT LAKE COSNTY, I'TAIT

rNDEX

SPECIFICATTON FOR HIGH DENSTTY POLYETIIYLENELINING (HDPE)

SPECIFICATION NO: B?1OS-O4 PAGE

1.O GENERAT 1

2.O LINING MATERIAL 1

3.O INSTATLATION 4

4. O FIETD SEAII! TESTING/QUALITY coNTRoL 5

)

- BP MINERALS AMERICA

I BARNEYS CAI{YON PROJECT SALT LAKE COUNTY, UTAA - - SPECIFICATION FOR HDPE LINING MATERIAL INSTALLATION

1.O GENERAT

1.1 Thls spectflcation deflnes the regutrenents for High Denslty Polyethylene (HDPE) lintng menbranes' materl.als, lnstallatlon and quallty control..

1.2 Llnlng materials sanples, manufacturerrs certifica,tes of cornpllance for material.s and speclflcations for installation, shall be subnitted with the Contractorts bid for review. A copy of the nanufacturerrs Quality Control Manual shall be submitted for approval or alteratlons.

Recommendation for methods and equipurent to place naterials on top of the HDPE lining materials shal.l also be included.

1.3 Any alternatives or exceptions to this specification shall be submitted in writing to Owner's Representative and shall. recelve Ownerrs wrltten approval prior to inplementation in the work.

1.4 At Least two weeks prior to commencement of Liner o lnstallation, the contractor shal.l. subnit shop drawings showing as a mlninurn:

A. Layout of llner systen.

B. Details of Joining liner systen and Liner anchorage.

2.O LINING MATERIAT - 2.L The nembrane ltner shall be a high quality fornuJation, containing approxinately 97X polyner and 2X carbon black with antl-oxidants and heat stabtl.lzers. It shal.l be reslstant to ultra violet rays.

.2.2' The mernbrane liner shal.l be comprised of BDPE naterial manufactured of new, first-quality products designed and nanufactured speclfically for the purpose of liquid containnent ln hydraulic structures. 2-3 The Liner naterial shall be so produced as to be free ) of lroles, bll,sters, undispersed raw material.s, or any s lgn of contaml,natton by f oreign natter. The contractor sball be responsible for visually inspect5,ng the sheet surface during unrolling. Any faulty areas or defects shall. be rnarked. Any such defect shal.l be repaired using the extrusion fusion welding technique approved by the Ownet's Representative.

2.4 The material provlded as high density polyethylene (HDPE), 60 uil llner shall rneet or exceed the minirnurn requirenents as stated in the National. Sanitation Foundatlon (NSF) Standard Number 54 as well, as the Banufacturers published ninimun specifications. Certification shall be proved of cornpliance to the following nininun standard,.

2.5 Prior to del.ivery of the HDpE rnaterial. to the job site, the fabricator or manufacturer shalt subnit certifi- cates of compliance with the IIDPE material, properties requirements of this specification, for conpliance and acceptance, to the Ownerrs Representative.

I 2 v PROPERTY TEST METHOD VALUE UNITS

a) Density (uin) ASTM D-1505 O.94O gmlccn o b) Thickness ASTM D-1593 60 rnils (nin)

c) Strength & ASTM D-638 Properties (nln) Type IV

Tensile 0 Break 180 lb,/in of G Yield 120 width

Elongation @ Break 500 x @ Yleld 10 x ModuJ.us of Elasticity ASTM D-882 80,00o lblsg. in.

d) Tear Resl.stance ASTM D-1OO4 30 lb Initiation (nin) Die C

e) Puncture Resistance FTMS 1O1B t75 ]b.

f) Coefficient of Linear Expansion ASTM D-696 o. 00012 per degree c g) Hydrostatic o Resistance ASTM D-571 315 Psi Method A Procedure I

h) Water Absorption ASTM D-57O o.1 nax I weight change

X) Mel.t Index (nax) ASTM D-1238 o.3 Gramsr/ 1O nin.

J) Environmental. Stress ASIM D-1693 500 hours Crack

k) Carbon Black ASTM D-16O3 2.o% (nin) Content o ,a 3.O TNSTALLATTON 3.1 Subgrade preparatton for the .leach pads and ponds shal.l be undertaken by the contractor who nust insure that the surfaces to be rined shal.l be snooth and free of all rocksr stones, sticks, sharp objects and debris. The contractor shall certify that the surface on which the membrane Ls to be installed Ls acceptable before cornmencl,ng work. rnstallation shall be performed under the dl.rection of a Field Engineer who has instafled a minfunum of 2,soo,ooo sguare feet of HDPE flexible lining material,. The Fietd Engineer shall be provided by the contractor, and shall be in abso]ute charge of the installation

To compensate for wrlnkles, shrlnkage,/expansion, material overlap, Contractor nust indicate at time of tendering a percentage alJ,owance conputed in his naterial take-off.

3.2 Field Seans

3.2.7 fndividual panels of HDPE liner naterial shaJ.l be laid out and overlapped prior to welding. Extrene care shall be taken by the instal.ler in the preparation of the areas to be welded. The atrea to be wel,ded shall be c leaned and prepared accord,ing to the procedures laid down by the naterial manufacturer. All sheeting shall be wel.ded together by an extrusion fusion process or an approved equlvalent method. Contractor shall define and detait rnethod used Ln fusion of panels proposed for Liner installation. A sample wel.d shall be made by each welder prior to conmencernent of field weldlng each day. The weld samples shall be tested in shear and peel. Two samples mininum shall. be taken durlng each shift.

3.2.2 The welding equipnent used shall be capable of contlnuously nonitoring and controlllng the temperatures in the zone of contact where the machine is actually fusing the llnlng material, to ensure changes in environraental conditions wll.l not affect the lntegrity of the weld.

) o 4 3.2.3 No lfish nouths" shall be aLlowed within the i-) sean area.. Where "fish Douths" occut, the naterlal shall be cut, overlapped, and an overlap extrusion weJd shall be applied. Alt welds on cornpletion of the work shal,l be tightly bonded. Any membrane area showing injury due to excessive scuffJ.ng, puncture, or dlstress from any cause shall be replaced or repaired with an additlonaf piece of tsDPE membrane at the expense of the Contractor.

3.2.4 The Contractor shall take into account that rapid weather changes are very possible, resulting in delays in constructlon of field seams. Fusion of panels and repalrs will only be permitted under weather conditions allowlng such work, and within the warranty linits inposed by the liner rnanufacturer.

4.0 FTELD SEAM TESTING/QUAtITY CONTROL

4.1 The installer sha1l enploy on-site physlcal. non- destructive testing on att welds to ensure watertight homogeneous seatns on a continuous basis as instal.lation proceeds. Each seam shall, under the observation of the Ownerts Representative, be testeC by vacuun method,s with a nininun vacuurn pressute of 6 psi, by etectrical arc testing, or by an approved equivalent method. o Visual inspection al.one is unacceptable. 4.2 A Quality-Control Technician or Fietd Engineer shal.l inspect each seam. Any area showing a defect shall be marked and repaired in accordance with approved IIDPE repair procedures.

4.3 A test weld tbree (g) feet long from each welding nachine shall be run each day prior to liner welding. The test weld shal.l be narked with date, ambient temperature, and wel.ding nachine number. Sanpfes of the weld shall. be cut from the test weld and tested in shear and peel. Welds shall have se€rm strength of 90 percent of the tensl,le strength of the parent material. PeeJ tests shal.l have a filn tearing bond failure. . : Seans shall be stronger than the material,. The weld sample shal.l be kept for subsequent testing on laboratory tensometer equipnent ln accordance with the applicable ASTM standards. Random weld samples nay be removed f ron the Lnstal l,ed welded sheet.lng at a frequency of 1 foot per 5OO llneal feet of seam and shall be tested ln accordance with the aforementioned procedures. i v tsP MINERALSAMERICA BARNEYS CANYON PROJECT Salt o . LakeCounty, Utah

TECHNICAL SPECIFICATION- No: 8?105-02

}TON-$TOVENGEOTSXTILE I''.ATERIAL

AND

GEOGRIDDRATNAGE NETTING

PREPAREDBY: A. PAT!{ARDHAN MINE AND I'IILL ENGfNEERfNG, INC. June 28, 1988

Reviewed: Paul Kaplan - SHB

Robert Parker - BPMA .o Zip Zavodni BPMA

Approved: BP Minerals America

tttl trrl ttl ttl

ruction lRev. I No. Date visi -a REVIEV{ eEa6 ql 3P MINERALS AMERICA BAF:NEYSCAt[YoN PROJECT SAtT LAT|E COUNTY, UTAH

rNDEX

SPECTFICATTON FOR NON-WOVENGEOTEXTTLEMATERIAL AND GEOGRID DRAINAGE NETTTNG

SPECIFTCATfONNO: 8?1O5-O2 PAGE

1.O GENERAL 1

2.O APPLICABLE SPECIFICATIONS AND REGULATIONS 1

3.O MATERIAL PROPERTIES 1

{.O TESTTNGArO iNSPECTTON 3

5.O SUBMTITALS 4

5.O SHIPPING AND UARKTNG 4

--o BP MINERALS AMERICA BARNEYSCANYON PROJECT o SALT LAKE COUNTY, UTAII SPECIFTCATION FOR NON-WOVENGEOTEXTTLE. MATERTAL AND GEOGRTD DRATNAGENETTING

1.O GENERAL

1.1 This specification defines the regulrenents for non- woven geotextile materiaf, including needled, spun or heat bound, stapl,ed, and for geogrid naterJal.

2.O APPLICABLE SPECTFTCATIONSAND REGULATIONS

2.1 The followlng publicatlons of the latest lssue are a part of this specification, except where nodified or replaced by l,ocal codes or ordl,nances havlng Jurls- dict ion, in whlch case the more stringent shal.l govern.

2.1.1 Occupational Safety and Health Adninis-tration, General. fndustry and Health Standards OSHA 22OG 129 1910).

2.t.2 Mine Saf etv and Health Adninistration (MSHA)- Code of Federal Regrulations Title 30 (Mineral Resources) .

2.1.g American Soctety for Testing and MateriaLs (ASrM)

2.I.4 FederaL Test Method Standards (FTMS).

2.7.5 Arny Corps of Engineers Test Methods.

2.1.6 AASHTO-AGC-ARTBA-Taskforce 25

3.0 I,IATERIAL PROPERTTES

3.1 Material supplied as a geotextlte shal.l be of new first-quality non-eroven (needled, heat of spun bound, or stapled) polyner of 1OOt polyethylene, lOOS Polyester, looS potyProPylene, o! polyester/ Po lypropylene bl.end, designed and loanuf actured speclfically for the purpose of tenslle reinforcement, planar flow, and filtratlon. UaterlaJ. conposition to be such as to inhibit deterioration by UV radiatlon. -a 3.2 Geotextil.e naterial. shafl be produced so as to be free of holes, undispersed raw material,s, broken needl.es, oT any sigm of contamination by foreign Eatter.

3.3 GeotextiJe and geogrid material shal,J. be uniform in color, thickness, size, and textufe.

9.4 Geogrid supplled for use as drainage nettlng shall be non-deforned nets constructed of extruded and,/or formed polyethylene rods. Geogrid sraterlal shal'l be of new, first quality pure low or high density polyethylene, UV stabilized wilfr carbon black. The nateria.l may be extended by frothlng with air.

3.5 The finished product shal] be supplied as prefabricated rolls custom designed f,or this proJect so as to ninlnize field sea-ing.

3.6 Geotextile materl.al, supplied shalt meet or exceed the folJ.owlng tninirlutr standards:

Propertv Test Method Units Value (see note 1) (see Dote 2)

Fabric weight D-3776 oz/sq yd 4. O 8.0 12.o

: (see note 3)

Grab Strength D-4632 fbs 90 180 275 Elongation D-4632 % 50 50 50 Burst D-3786 psi 250 425 600 Trap Tear D-4533 1bs 45 75 105 Puncture D-3787 (Mod) lbs 70 130 140

Ilydraulic Properties :

EOS/AOS coE-cr{o2215 sleve sl,ze 70-100 70-100 70-100 Water Pern D-4491 cmlsec o.2 o.2 o.2

-o 3.8 Geogrid material supplied for use as a hydraulic nediurs shal] meet or exceed the followi-g rninimurn standards :

ErgJ:erly Value Units Thickness .20 inches Weight .16 Specific Gravity .94 ::' Tensil.e strength 70/55 pPi (mach. ./cross directlon) Elongation @ Break 100 x Porosity .80 Carbon Black l2.o - 3.o) x Melt Index .26

Notes:

(1) Test nethods are ASTM or Corps of Engineers, as noCified by AASHTOTask Force 25.

(2) Miniuun values lot mean rninus two standard deviations when sarnpled and tested according to AASHTO-AGC-ARTBA-Task Force 25 Recornrnended Guidelines.

(3) Mlniurun of nachine and cross-nachine direction.

4.O TESTING AND INSPECTION

4,7 The supplier of geotextiles used ln thjs work shall take randon sanples from the roll goods in a quantity sufficient to show compl,l,ance with the rnaterial properties section of these specifications. Sanples shall be tested by a qualified laboratory by methods specified in Section 3.O or weight and grab, tear, burst, and puncture strength. Sarnpling and testing shal.l conform to the Reconnended GuideJines of AASHTO- AGC-ARTBA-Task Force 25. Contractor shall subnit results of all testing to Ownerrs Representative.

4.2 Att roll goods shatl be lnspected on both sides for unnixed or poorly dispersed ingredients, the Presence of contaminants or foreigm particles, broken needles, holes, or any other defects and all defects or tnpurities shall be removed or tePaired before shipnent.

4.3 A log shall be maintalned of all, above and addlttonal' testing performed showing Lot nunber, roll number, and results. This log shalf be made available to the -(a Owner I s Representative. 5.O SUBMTTTALS

5.1 The followlng itens will be submitted to the Ownerts Representative for approval prior to acceptance of proposal:

5.1.1 Sample of the geotext il,e and geogrid material.s showing seaming methods. ( If appllcable).

5.L.2 Detailed schedule of fabrication and roll width.

5. 1 .3 Shop Drawings showing as a ninlrnum the layout of the geotextil,e system and details of over- lap, Jointing and anchoragre methcds. (If applicable).

5.1.4 Detai ls of recommended installation procedures, lncluding seaming Eethods and tenporary anchorage against wind.

5. 1.5 Manufacturer af f idavit that the roaterial. he offers to furnish wilt meet in e'rery aspect the reguirernents set forth in these specifications.

5.2 Prior to delivery of the geotextil.e or geogrl,d uaterial o to the job site, the f abricator shal,l subnit certificates of compliance with the geotextile material properties reguirements of this specification, for conpliance and acceptance, to the Ownerts Represen- tative

6.0 SHTPPINGAND MARKTNG

6.1 Prominent and tndellble marklngs or labeJ,s on each roll shal,l ldentlfy the manufacturer, roll number, length and wldth of roll, and rnaterial. thlckness.

6.2 Each rol.l. shall be securely packaged for shlpuent so as to prevent the unraveling of material during handling and shipping.

-o BP MINERALS AMERICA BARNEYS CANYON PROJECT o Salt Lake County, Utah

TECI:NICAL SPECfFICATfON - No: 87105-03

FTETD QUALITY CONTROL FOR EARTHWORKAND SLEXTBLE MEMBRANETTNER (FT''L)

PREPAREDBY: A. PATWARDHAN MTNE AND MTLL ENGINEERING, INC. June 28, 1988

Revlewed: Z. Zavodnl - BPMA

Paul. Kapl.an - SHB

R. Parker - BPMA O

Approved: BP Minerals America

ttl ttl

sed for tructi

roved '(a REVIEW DEC61988 BP MII{ERALS AMERICA BARNEYSCANYON PROJECT SALT LAKE COUNTY, UTAH

INDEX sPECTFTCATTON FOR FrELD QUALTTY CONTROL FOR EARTHWORK AND FLEXTBLE MEMBRANELINER (rur1

SPECfFICATION NO: 8?1OS-O3 PAGE

1.O SCOPE 1

2.O SUBGRADEREQUTREMENTS 1

3.0 TESTING PROGRAI.{ 1

3.1 Perlodic Tests 1 3.2 Earthwork 2 3.3 Liner Testing 3 BP MINERALSAMERICA BARNEYS CAI{YON PROJECT SALT LAKE COUNTY, UTAH o SPECTFTCATTON FOR FrELD CONTROL FOR EARTHWORKAND QUALITY TLEXTBtE MEMBRANELINER (E'Mt)

1.O SCOPE

In addition to the manufacturing faclllties guallty control prograq, ?s established by the fabricator, a comprehensive program for fietd guality control shall be Provided. Thts program is in contlnuation of and supplements the plants Progran. All field sarnpling and testing shall be done by the lnstaller as dlrected by the Ownerrs Representatlve and under the dlrect supervision of the Ownerts Representative.

2.O SUBGRADEREQUTREUEIrIS

Liner lnstallatlon shall not begln urtll the subgrade has been approved by the Ownerrs Representative. The acceptance criteria shall be as f oll,ows:

The subgrade shall consist of a snooth, uniforn surface free of gravel, roots, and other itens which nay puncture the llner. Surface roughness ln excess of L/2 inch (verticaffy) per 2 lnches (horizontal) shall not be allowed. The surface of the subgrade shall be finished rolled with a smooth steel. drum roller.

All fill placed below a FML and the upper 12 inches in cut areas shall be compacted to at least 95X relative compaction, as deternined by the ASTM D155? test nethod.

3.0 TESTTNG PROGRAM

The field install,atlon test progran consists of periodlc vtsual. observations, continuity and strength tests.

3.1 Perlodic Tests

These tests are to be nade routlnely and are autornatic regardless of the test level'required. The procedure is as described bel,ow: 3.2 Earthwork

3.2.7 Mater:a] Testinq

The Ownerrs Representat:ve shall arrange to perforra testing to classify each specified construction natertal type. lests performed shall consist of grain-size distributing anal.yses and Atterberg Llnits testing to classify each material type for its specified use in constructlon. Addltionally, moisture content, noisture-denslty rel,ationships (Modified Proctor) and ln-place density and moisture tests shall be performed to verify the construction conforms to the plans and specifi- cations. Observations ard tests perforned by the Ownerrs Representative shall, not relieve the Contractor of responslbility for providing adeguate quality contlol Deasures Dor of responsibillty for damage to or Loss of material before acceptance.

3.2.2 Test Procedures

Alt tests perforned shall be in accordance with the 1988 edition of the ASTM Testing Standards as indicated bel,ow.

1. Grain-size d,istribution analysis - ASTM D422.

2. Atterberg Linlts - ASTl.tD4318.

3. Moisture content - ASTM D2276.

4. t'loisture-density reJ.ationship - ASTM D155?.

5. fn-piace denslty and nolsture - ASTM D1556 ol ASTM D2922.

3.2.3 Testins Fremrencv

Tests of original .ground, fil.l, embankment, and soil liner nateriaJs will be nade at the following suggested minlnurn rates:

1) One field density test for each 15Oo square yards of original ground surface prior to placing fill or floor slab construction. ,a 2) One fiel,d density test for each 5OO cubic yards of fill placed or each layer of fill for each work area, whichever is the greater nunber of tests.

3) One moisture-density cuive for each type of rnaterial used, ES indicated by sieve analysis and plasticity l,ndex.

The Owner I s Representative will submit the resuJ,ts of field density tests reguired by these specifications,

3.3 Liner Testinq

3.3.1 Field installation, H€lding and seam testing shall, be performed under the full tj'me observation of the Owner's Representatlve. Suspected discrepant areas shatf be ldentified with a contrasting marker.

Destructive shear anC peel tests shall be perforned on fJeld seans every 5O0 lineaf feet of seam. Actual location of seam tests will be randornly deternined in the field by the Ownelrs Representative. Copies of the results of these tests shatl be subnitteC to the Contractor and the Ownerts Representative prior to coverage ot the Liner by overllner uaterials.

The Contractorts inspector shall. mark, log and identify each type and Jocation of the repair to b€ nade at all discrepant areas.

The Ownerrs Representative shall have the right to reject any fiel.d made seam for cause. Cause shall be def ined to incl,ude poor workrnanshlp, defective welds and insufficient overlap of panels. Any f,leld uade sean reJected for cause shall be repaired or replaced to the satisfactlon of the Owner's Representative.

The entire length of each field wel.ded seFm shall, under the observation of the Ownerrs Representative, be tested by vacuum nethods with a uinirnum vacuun ptessure of 6 psi, by electrlc arc testing or by an equivalent nethod approved by the Ownerrs Representative. .-o 3.3.2 Procedure for non-passinq seams

Visually lnspect the entire seam for excessj.ve o overlap, poor sgueeze out, wrinkles, or other itens which may indicate poor seam quality. ff rupture is Located, patch and retest. If luPture cannot be located visuall,y, the leak rnust be isol,ated by sealing portlons of the seaE and repeating the test. Alternatively, the ent i re searn can be rewe lded and retested. Coupon sample and peel test the sean in at l,east three (3) locations within the repaired a!ea.

4 APPENDD(G

SEPAGE CAIfI,'IAIIOI{S q-rm.l!N E2rrts{tcY> t-E tflr+ ITW t I lrfrrlJ{r> I L / {). tf,-(c.\c f lbb

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APPEIT{DIX H.1

RECXAMA^TION @ST ESTIMATts SPREADSHEET

('o EARIIEYSCA'IYOII PROJECT RECLA}TATIOIICOST ESTIIT'IATE SEPTEI{BER1989

TOPSOITPLACETIEIIT

LOADIIIG

llaterial: Topsoll Job Efflciency; 0.56 Equlpnnt: Cat 992C EqulpmntCost (g/hr): 189.00 Capaclty(LCY): 13.50 llaxlm,rm Actual AreaQuantlty Productlon productlon Tlre Cost acnes CY C'tlhr Cy/hr hours t

Roads 72.0 116160 1300 728 160 30157 Adnln Bldg 3.4 5485 1300 728 8 1424 Prccess/Lab/Substat lon zt.t 34041 1300 728 47 8838 (he Stockpile/Crusher r7.3 27911 1300 728 38 7246 Shop/Hater Storage r3.3 2t457 1300 728 29 557t Gravel/clayplt tf r.5 2420 1300 728 3 628 Clay plt f2 2.5 4033 1300 728 6 tM7 Alt. Clayplt 1.4 2259 1300 728 3 586 BCPlt road flll dunp 5.4 87t2 1300 728 t2 2262 ilD 6500 45.1 72761 1300 728 100 r8890 ilD 6400 27.3 44044 1300 728 60 rr434 lrD 6300 65.8 106157 1300 728 146 27560 tlel-Co dunp surfaces (3) 33.2 53s63 1300 728 74 13906 llel-Co Ounp 0utslopes 26.2 42269 1300 728 58 1097{ Leach Pad BC-l 56.9 91799 1300 728 126 2fi32 Leach Pad BC-2 43.5 70180 1300 728 96 18220 Leach Pad BC-3 50.8 81957 1300 728 113 21277 Leach Pad BC-4 60.2 97123 1300 728 133 25215 Leach Pad il-t 30.1 {8561 1300 728 67 12607 Leach Pad il-2 19.7 31783 1300 728 U 825r Future Leach pad 19.4 31299 1300 728 43 8r26

Iotal Cost (1989Dollars): 258051 }IAULTIIG llaterlal: TopsolI Job Efficiency: 0.83 Equlpmnt: Cat 7738 EqulpnentCost (g/hr): 105.00 Capacity(LCY): 37.50 Cycle ilaxim,mActual Area Depth Quantlty ]taul Dist Tirc Prod. prod. Tlm Cost actes feet CY feet min Cy/hr Cylhr hours t llel-Co Roads 2r.6 1.00 34848 2400 8.6 262 217 160 16850 -Co Sarneys/tlel AccessRoad 28.8 1.00 46464 3300 9.8 230 r9l 244 25602 8arrcp Roads 2r.6 1.00 34848 3300 t2.7 L7t 147 237 24883 Adnln Eldg 3.4 1.00 5485 3900 10.1 223 r85 30 3U5 Process/Lab/ SubstatI on 21.1 1.00 34041 2400 8.8 256 212 t60 16843 (he Stockplle/Crusher 17.3 1.00 27911 3750 9.8 230 191 146 15379 Shop/llater Storage 13.3 1.00 21457 3900 9.9 227 189 u4 1t944 Gravel/clayplt fl 1.5 1.00 2420 2100 9.1 247 205 12 1238 Clayplt f2 2.5 1.00 4033 1050 7.5 300 249 16 1701 Alt. ptt Clay 1.4 1.00 z?59 1800 8.1 278 23r l0 1029 8CPlt road fill rtrry 5.4 r.00 8712 2300 10.0 225 187 47 4898 lrD 6500 45.1 1.00 72761 1500 7.4 304 252 28 30273 lrD 6400 27.3 1.00 44044 1620 8.5 265 220 200 21049 ro 6300 32.9 r.00 53079 1800 7.8 288 239 222 23278 llel-Co dunpsurfaces (3) 33.2 1.00 53563 3300 9.6 2y 195 275 28911 llel-Co DnnpOutslopes 26.2 1.00 42269 3300 9.6 234 195 2t7 22815 LeachPad BC-l 56.9 1.00 91799 3000 14.5 155 r29 713 7{840 Leach PadBC-2 43.5 1.00 70180 1350 7.6 296 246 zffi 29989 Leach PadBC-3 50.8 1.00 81957 5400 t2.2 184 153 535 56218 Leach Pad8C-4 60.2 r.00 97t23 2100 8.8 256 2r2 458 48054 Leach Padl,l-l 30.1 1.00 48561 1200 7.8 28 239 203 21297 leach Pad ll-2 r9.7 1.00 31783 9000 10.2 22r r83 174 ta27 Future LeachPad 19.4 1.00 31299 2400 8.6 262 2r7 144 15134

Total Cost(1989 Dollars): 513567 SPREADIIIG llaterial: TopsoiI Job Efficiency: 0.90 Equlprent: Cat D8L EgulpmntCost (f/hr): r32.00

Area Oepth Quantity DozeDlst tlax PrrodJob Eff Act Prod Tinp Cost acnes feet CY feet CY/hr t CY/hr hours t

Roads 72.0 1.00 116160 50 1800 0.9 1620 72 9465 AdminBldg 3.4 1.00 5485 50 1800 0.9 1620 3 447 Process/Lab/Substat i on zt.t 1.00 3404r 50 1800 0.9 r620 2t 2174 Ore Stockpi le/Crusher 17.3 r.00 27917 50 1800 0.9 1620 t7 2274 Shop/llater Storage 13.3 r.00 2t457 50 1800 0.9 1620 13 1748 Gravel/clayptt tl 1.5 1.00 2420 50 1800 0.9 r620 I 197 plt Clay f2 2.5 1.00 4033 50 1800 0.9 1620 2 329 Alt. Clay ptt 1.4 1.00 2259 50 1800 0.9 t620 I 184 BCPtt road ftll dunp 5.40 1.00 8712 50 1800 0.9 1620 5 710 I'O 6500 45.1 1.00 7276t 50 1800 0.9 1620 45 5929 tI) 6400 27.3 r.00 44044 50 1800 0.9 r620 27 3589 ilD 6300 65.8 r.00 106157 50 1800 0.9 1620 66 8650 llel-Co dunp surfaces (3) 33.2 1.00 53563 50 1800 0.9 1620 33 4364 llel-Co ounp0utslopes 26.2 1.00 12269 50 1800 0.9 1620 26 344{ LeachPad BC-l 56.9 1.00 91799 50 1800 0.9 1620 57 74W Leach Pad 8C-2 43.5 r.00 70180 50 1800 0.9 1620 43 5718 Leach PadBC-3 50.8 1.00 8r957 50 1800 0.9 r620 51 6678 Leach Pad BC-4 60.2 1.00 97r23 50 1800 0.9 1620 60 7914 leach Pad ]l-l 30.r 1.00 48561 50 1800 0.9 1620 30 3957 Leach Pad l,l-2 19.7 1.00 31783 50 1800 0.9 r620 20 2s90 Future pad Leach 19.4 r.00 31299 50 1800 0.9 r620 19 2ss0

Total Cost (1989Dollars): 80991

TOPSOILPTACE}IEIIT COST SUiI}IARY Loading 258100 Hauliry 513600 Spreading 81000

Total 8s2700 COflSTRUCTSAFETY 8ER}IS AROUIID PITS

llaterial: RockandSoil Equipmnt: Cat D8L-U (lb/cy): Denslty 2900 EquipnntCost (g/hr): 132.00 Job Efflclency: 0.59 X-sect. Area (SF) 24 DozeDistance (Ft) 200 llaxinrun Actual Actual LengthQuantity prod. production Tire Cost feet CY Cy/hr Ct/hr hours t Earne)6 Plt 6000 5333 620 366 14.58 1925 llel-CoPlt 4500 4000 620 366 10.93 1443

Total Cost(1989Oollars): 3368

FILI SLOPEREMruIilG

lhterlal: Sardstone Equipmnt: Cat 091r|-U Denslty(lb/cy): 2550 EqulpnentCost (l/hr): 1{2.00 JobEfficiency: 0.504 AveDoze Dist: 200

Uolurc llax prod Act prod Tirn Cost Cr CY/hr Cy/hr hours $ thry 6500 upper ilft 78400 980 494 158.73 22il0 Durp6500 mtddlellft 84900 980 494 171.89 24408 Ounp6500 lorer ltft 58800 980 494 U9.05 16905 Dup 6400 75100 980 494 152.05 21591 Dunp6300 434s00 980 494 879.70 1249t7 Roadflll ptt ilorthof BC 36200 980 494 73.29 10407 LeachPad BC-l 23200 980 494 46.97 6670 teach Pad 8C-2 21400 980 494 43.33 6152 Leachpad BC-3 20100 980 494 40.69 5779 Leachpad BC-4 27100 980 494 54.87 779r Leachpad il-l 17300 980 494 35.03 4974 LeachPad il-2 12000 980 {94 24.30 3450 Futunepad 10100 980 494 20.45 2904 llel-Co top 15100 980 494 30.57 4341 10-7300top 22700 980 494 45.96 6526 f0-7200top 30200 980 494 61.14 8682 S of ore stockpile 97900 980 494 198.21 28146 Shop 66700 980 494 135.04 19176 8C-l Ore 50500 980 494 102.24 14519 8C-2Ore 46600 980 494 94.35 13397 BC-3Ore 43700 980 494 88.48 12564 8C-4(he s8300 980 494 118.04 1676r il-f Ore 37900 980 494 76.73 10896 ll-2 (he 26200 980 494 53.05 7532 Future Pad 22300 980 494 45.15 641r

Total Cost(1989Dollars): 407439 RIPPIIIGTOPSOILED SURFACES llaterlal: TopsolI EquipnentCost: f42.00 Equlpmnt Cat l6G Rlppirqllidth (ft): 9.77 Veloclty(ryh): 4.00

Area Tlrc Cost acres hours $

Roads 72.0 r5.20 2r58 Afiln Bldg 3.4 0.72 t02 Prccess/Lab/SubstatI on 21.1 4.45 633 OrcStockplle/Crusher 17.3 3.65 519 Shop/llater Storage 13.3 2.81 399 Gravel/clayptt fl 1.5 0.32 45 Clayplt 12 2.s 0.53 75 Alt. Clayplt t.4 0.30 42 8CPtt mad flll dr4 5.4 l. t4 t62 r{) 6500 45.1 9.52 r352 lrD 6400 27.3 5.76 818 l,D 6300 65.8 13.89 t972 flel-Codunp surfaces (3) 33.2 7.0r 995 llel-Co DunpOutslopes 26.2 5.53 785 LeachPad BC-l s6.9 12.0r 1706 LeachPad 8C-2 43.5 9.r8 1304 LeachPad BC-3 50.8 r0.72 1523 leach PadBC-4 60.2 t2.7t 1805 LeachPad ll-l 30.I 6.35 902 LeachPad ll-2 19.7 tl.l6 59r Future LeachPad 19.4 4.10 582

Total Cost(f989 Dollars) r8469 TEACHPAD PERIIIETER A'tD POIIDREGRAOIIIG

llaterlal: Rockand Soll Equlpmnt: Cat 09il-U Denslty (lb/Cy): 2900.00 EqulpmntCost (g/hr): r42.00 &b Effeclency: 0.59

Volurp DozeDlst llax prod Act ProdTlrn Cost CY feet Cy/hr C'Y/hr hours $ LeachPad 8C-1 20p.75 50 2200 1298 t5.77 2240 teach Pad 8C-2 18375 50 2200 1298 14.16 2010 LeachPad 8C-3 18375 50 2200 1298 14.16 2010 LeachPad BC-4 23100 50 2200 1298 U.80 2527 LeachPad ll-1 15750 50 2200 1298 12.13 n23 teach Pad it-2 12600 50 2200 1298 9.7r 1378 Futune LeachPad 10500 50 2200 1298 8.09 1149 Solutlon Ponds 53500 100 tzo0 78 75.56 10730

Totrl Gost(1989 Dollars): 23768

LEACIIPAD AIIO SOLUTIOII POIIO LI]IERS

lhnual Labor(l/trr): 12.50 llu$er of Laborers: 2

Tlre Cost hours $

Leach Pad BC-l 25.00 625 teach Pad 8C-2 25.00 625 leach Pad 8C-3 25.00 625 Leach Pad 8C-4 25.00 625 leach Pad ]t-1 25.00 625 Leach Pad il-2 25.00 625 pad FuturneLeach 25.00 625 Solutlon Ponds 20.00 500

Total Cost(1989 Doltars): {875

RUIIOFFCOIIIROL Lrq Srn Cost lnstall lfaterbars 14200 RemveCulverts 8400 RemveSllt Fences 2400

Total Cost(1989 Dollars): 25000 REVEGETATIOII IREAAEilTS

Item Cost(g/ac) I lopsotled AreasSeed Cost 199 2 llon-topsolledAreas Seed Cost l9l 3 RlparlanAreas Seed Cost 203 4 Seedlngwlth RangeDrill 100 5 lltdroseeClry(appllcation only) 800 6 fl ContatnerStock (aslac) 180 7 fl ContalnerStock (f35/ac) 608 8 Fertlllzer Cost 47 9 Fertlllzer Appllcatlon 30 l0 UreaCost 22 ll UreaAppltcatlon l5 12 llulch Cost 100 13 llulch Appllcatton 30 l{ llulch Crlnplng 70 f5 SeedBroadcasilng 100

ReuegetatlonTreamnt I: Topsolledfteas less than2:l Iteus l. 4. 6 andI - t3 Total Cost($/ac): 723

Ar€a Cost acres I

Roads 72.0 52056 MmlnBldg 3.4 2458 Process/Lab/Substati on 7.5 il23 (he Stockpile/Crusher 9.9 7158 Shop/tfaterStorage 4.6 3326 Gravel/clayptt ll 1.5 1085 Clayplt f2 2.5 1808 Alt. Clayplt 1.4 t0l2 to 6500 t7.7 t2797 lD 6400 18.7 r3520 rt) 6300 26.0 18798 thl-Co dunpsurfaces (3) 33.20 24004 LeachPad 8C-l 12.50 90:t8 LeachPad BC-Z 10.0 7230 LeachPad BC-3 18.5 r$76 LeachPad BC-4 20.2 l/t605 LeachPad it-l 9.60 694r LeachPad ll-2 5.8 4193 FutuneLeach Pad 1.60 1157

Total Cost(1989 Doltars) 199982 RevegetatlonTrcatrnt II: TopsolledAr€as at 2:1 Slope Item l. 5. 6. 8 andl0 - l{ Total Cost($/ac): 1463

ft=a Cost acres $

Process/[ab/Substat I on 13.6 r9897 (he Stockplle/Crusher 7.4 r0826 Shop/IaterStorage 8.7 t2728 ro 6500 27,40 40086 !I) 6400 8.60 12582 r|) 6300 39.80 58,227 ]lel-CoDurp 0utslopes 26.20 38331 LeachPad 8C-t 44.f0 64957 LeachPad 8C-2 33.50 49011 LeachPad BC-3 32.30 47255 LeachPad BC-4 40.00 58520 LeachPad il-l 20.50 29992 LeachPad ll-2 13.90 20336 FutureLeach pad 17.80 26041

Total Cost(1989 Doltars): 488788

RevegetatlonTreatnent III: llon-topsolled Slopes Iters 2. 5, l. 8 andt0 - 12 Slopesrlll be hydroseededtwlce Total Cost ($/ac): ZS83 o Area Cost acnes $

lD 7100& 7200Slopes r8.9 48819

Total Cost(1989 0ollars): 48819

RevegetationTreatrcnt IU: Interlm TopsoilStockpile Seeding IteG I t 15 Total Cost($/ac): 299

Area Cost acFes $

TopsollStockptles 49.9 14920

Total Cost(1989 tloilars): 14920

RevegetationTotal Cost 752509 o EQUIPT|EilTfioEIrIZATIot{/DEtoEILIZATI0ll

Assnnp$ 840 per plece of eguiprcnt (except 992C)

Joblbscrlption Equip

LoadTopsoil Cat 992C I 3150 llaul lopsoil Cat 7738 5 4200 SpreadTopsoll Cat D8L I 840 SlopeRegradtry and RippirB Cat 09il-U 4 3360 Rlp TopsollSurfaces Cat l6G I 840 Rumff ControlConstruction Cat 2358 I 840

Iotal Cost(1989 Dollars): RECLA}IATIOIICOST SUISIARY Iotrl cost TopsollPlacemnt 1989U S Dollars Loadlry 258051 Haullry 513567 Spreadtry 80991 ConstructSafety EemsAround plts 3368 Flll SlopeRegradlng 407439 Rlppirp Topsoiled Surfaces r8469 LeachPad Perlnpter t pod Regradtng 237ffi Fold leachPad and Sol'n pondLlners 4875 Rumff Control 25000 RevegetatlonTrcaftnts Lessthan 2h:lv slope 199982 2h:lv slopes 488788 llon-toposlledslopes 48819 Interln Topsollseedlry 14920 Equlpmntllob/Demb r3230 Subtotal s2.101.270

Supewlslon(tt of Subtotal) r05064 GrardTotal t2.206,330

o I - v

APFEIITDIXH.2

R,ECXATII^TION@ST ESTIMATtsASST'MPNONS

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ORIGINAL LOCArED IN DOGU CONFIDENIIIAL FILE [K ffi SN :-1 ---.-.)\( 4,1(( l,\d' ;[\ $ I

StAle OI U|3"it gTDEPARTMENTOF NATI.JRALRESOURCES DMSION OF OII+GAS AND MINING Norrnrn H. Een4encr l- Gmm a. 355Wcsl Ndhfctngle L j lltcC Hen:m EKirtIGd 3 Trbd Ccnrcr.&itc 35O IDiennc R Ni.{tocP!LD. Set trrc Cty. uah 8rlr80-t2cB -538-53.0 - - Oirinrfimr EOr August 31, 1988

Mr. Gerald D. Schurtz Manager Environmental Engineering I(enDecltt Explorations (Australia) I;td- P.O. Bor 11?;48 Salt Lake City, Utah 84L47

Dear l[r; Schurtz: Re:

The Division has completed,its review of Keunecott's teutative approvd -tresponse.Kennecott protfded suprlemental inforuation to address 6oidifions which reueined priorto our issuaice of final apprpval for this proiect. The Boaril o-fOil, Gas and Mining approved the amount ($'2',?00,000)and foIn (MR Form 6l of-.--- - the reclamation eurety diriiDg the exesutive session 6f tUe Angust 25, 1988 Board, hearing.

- FiptlDivision approval is lrereby granted for the Barne/s Canyon Project with the following conditions:

1. No'Water constnrction of the specific facilities requirine approval by the Utah Bureau of Pollution Contiot (BWPC) is perniitted-unlil that B-ureauissues a L-,- coDstruction pemit for the projecL

I(ennecott Explorations (Australia) Ltcl. must provid.e the Division with a detailed decornrnissioning cost breakd.own witf,in one year after start up. The cost estimate will be basdd on the final decommissioning plan approoed'by the Bureau of Water Pollution Control (BWPC). The detailE

an Gqual ocportunity cmployer Page 2 Mr. Gerald D. Schurtz Mt035t009 (. August 29, 1988 o 3. The Board has requested that Kennecott complete a new reclamation contract form- The older form (MR Form E), s submi€ted, will provide adeqrrate coverageuntil the new forms becomeavailable. ihe re-visedformsihould be frnalized soon- A new surety bond will not have to be obtained for this project. The Division appreciatesKennecott's patience and cooperation in completing t*.pSt-ltting activity. Plgasefeel free ti coot"ct G at aiy tine shotrlit-iou h"?" additional permitting questions or coDcens.

Sincereln -L* /Ar+4 Iowell P. BraxtouiAdninistrator Mineral ResourceDevelopment and Reclanation Prognin

'e,Barney'g Cauyoa Mine , JBR0o-nsriltaits , Steve Ha:ris, Magna Area Etected Council Jerry Mansfield, State Lands P_laingJvfsraule lYluler,ilnel_OoppergellTrnprovementDistrict \rOpperEODUlfprovement l.ristnct $"pt Min-er, Salt Lake City/Gtuty Health Dept. Rober0Morgan, Water niehts Don Osler, BTII'PC William lhurman, Mcl(ay, Burton and Tlurrman \MalmeIledbers _ - _Ilolland ShephErd 3/16-16