M-033-009_1992-046.e008.pdf - Utah Division of Oil, Gas and ...

NOTICE OF INTENT TO COMMENCEMINING OPERATIONS

KENNECOTT EXPLORATIONS (AUSTRALIO LTD.BARNEYS CANYON PROJECT

SUBMITTED TO UTAH DIVISION OF OIL GAS AND MINING

KENNECOTT EXPLORATIONS (AUSTRALIA) LTD.

1515 Mineral Square

Saft Lake City, Utah 84112

KENNECOTT'SEXHIBIT

Docket NCause No.

eo"

,r-*tM-035-009

TABLE OF CONIENTS

PAGE#

Form MR-MO

1

I

224

7

7

7

8

9

99

11L22l

?2

25E262933

vv3539

4L4346{I48

49

51

51

L.4

15

1.6

1.0

3.0

Inboduction

1.1 Locatios

13 l-and Use

L2 Land OwnershipLz.t Srrrf;& OmershioL22 Subsurface Oum'ership

Existing Facilities

Mineral Exploration

Utilities and Accass

Slte Description.

2.1 Geologr2.L.L2.t22.t32.1.4

2.4 Soils2.4.L2.422.43

Qeologrc S-rlti9g .Geology of Mii-eral DepositsSubsurface Geoloqv of Process Farueorogy oI Mtneral Depositslupsryfgce Geolog of Process Facilities SiteScisnicity.

22 Surface Water Hydrologl

23 Groundwater HydroloeY23.1 Regioial Aqlifer Characteristics232 Local Recharse Characteristics233 lncal Aquifer- Characteristics23.4 Bascline Groundwater euality

fiOnicat'Apnroachloil Qpgs ..'Topsoil Quality

2.6 Wildlife

Operation Plan

O

3.1 Description of Mineral Deposits

REVISED 9.29.89

TABLE OF CONIENTSCONTINTJEDo PAGE#

515253

56

56

6263707t

757578787878

80

80

80

81

84

85

9191y2,96

99

102

t02

103

104

104

105

33

3.4

4.4

45

MiniDg32.1322

MiniBg OpcrationsMine Pit Configurations

323 Pit Slope Srability Analltis

CtushingScreening Conveying and Stockpili"g

I*aching3.4.1 l-each Pads3,42 Solution Conrcyances.3.43 Solution Posds

35 Lcach Solution Processine .35.1 Carbon AdsorpEon?5_.? Carbou $trippi"g .1{q Electrowinnidg35.4 Carbon Rsseieration355 Gold Refinl,ag

3.6 AnciUary Facilities

3,7 Waste Disposal

3.8 Production Sc,hedule

3.9 Topsoil Maaagement

3.10 Orcrburden Disposal

3.11 Evaluation of Materials Toxicity

3.12 Runoff and Serliment Control3.r|l Rgnoff !6lrrng Esfim3ggs3.L22 Operational Runoff Control3.123 Operational Scdimcnt Coutrol

3.li} Disnnbcd Acre4ge

Impact Assessment

4.L Surfacc Water

4.2 Groundwater

43 Soil Resources

Critical Wildlife Habitats

Ait Quatity.

REVISED 9-29-89

TABLE OF CONIENTSCONTINT'ED

4.6 Public Health and Safety

PAGE#

105.1

5.0 Rcclcnadon Plan 106

106

1061061071ffi

107107108r08

110110u0111

11:}

113

120

72tLzL722122

123L23

12!!.1

LU

7Zl

t2A

125

,26

726

rTl

lIl

5.4

5.1 pssl-rnining knd Use

52 Demolition and Disposal52.1 Facilities Removal5-.22 Dsmolition Debris Disposal523 Hazardous Substances'

53 Rcgra<li"g and Faeilities Closure53.1 Open Pits53.2 Minc Waste Dn'nDs533 Hcap Lcach Pads'and Solution ponds

Soil Materials5.4.1 Sites to be Topsoiled5.42 Topsoil Haadline5.43 Tolsoil Balance-

55 Seedbed Preparation

5.6

5.7

5.8

Seed lvlirure

Seedi"g Metbods

Fertilization and Muuziauon anq MuIcuIIlq .{.q.1 fgltilizafies of Topsoiled Areas

ulchine .

l.q2 Fertilization of No'u-Topsoiled arcas5.8.3 Mulchi'g

Requests for Varianccs

Surface_ W_ate1 Hy&ology 6ad gg.tirnsnt Control5.9.1 Drainage Plan5.9.2 Sedi-eat Control Structures

6.1 Variance Request &om Rule M-f0(3)

62 Variance Request from Rule M-10(4)

63 Variance Requxt &om Rule M-10(t

6.4 Variance Requesr from Rule M-10(g)

6.5 Variance Request from Rule M-10(12)

6.6 Variance Request &om Rule M-10(li})

6.7 Variance Request uo- *urfry,,log?

"o*rrooSREVISED 9.29.E9

oCONTINT'ED

7.0 Recle'-a66o Cost Estimate

LIST OF TABLES

Surface Ouncnhip

Subsuface/Miaerals Owuership

Permeability of Lcach Pad Arca Sruficial Soils

Permeability of l-eacb Pad Area Alluviun

Water Table Deptbs in Project Area

Topsoil Yiel&

Rcsults of Total Metals and EP Toxicity Anal1nis for BC Sanples

Results of Total Metals and EP Toxicity Anal!6is for BC Sanples

Cuwe Numbers for BC Drainage Basins.

Barneys Canyon Project Impoundmenf Q611[einmgst Volumes

Disturbcd {396 grrrrrmar.y

Topsoil Souces by Soil Tlpe

Topsoil Applications by Site

Sccd Mirturc for Topsoiled Areas

Sccd Mixture for Arsas not to be Topsoiled

Riparian Secd lvlirure

ReClamatiOn Qgg[ grrrnrnsry

E.0 Refercncts

128

130

PAGE#

Table 12-1

Table t2-2

Table 2-$1

Table 23-2

Table 233

Table 3.9-1

Table 3.11-1

Table 3.11-2

Table 3.12-1

Table 3.12-2

Table 3.ljl-1

Table 5.41

Table 5.4-2

Table 5.6-1

Table 5.62

Table 5.6-3

Table 7.0-1

4

o

5

n28

32

83

90

902

92

9s

I

111

111

116

L17

118

128

REVISED 9.29-89

oTABLE OF CONIENTS

CONTINTJED

LIST OF FIGI'RES

PAGE#Figrue 1.1-1Figurc 1.?-1Figue 2.1-1Ftgurc 2.1-2Frgrue 2"1-3Ficure 21.{Fifirc 2.1-5Figure 2"16Figure 2.1-7Figure 2.1-8Figurc 231Figuc 25-1Figue 32-1F:rnre 3.2-2Filure 32-3Figure 32aFigure 32-5Figrue 326Figure 331Figure 3.+1Figue 3.42Frgure 3.4-3Filure 3.+aFigurc 3.11-5Figue 3.zt-6Fisure 3.4-7Filure 35-lFigure 35-2Figure 35-3

Location Map 36

10t41516t718192D3142v555859606162&6566869737476n79

Propertv MaiGetitosy lvlaDGeoloSc Crix

Map6i5n ie.tioo A-a'

Gcolo$c Cross Section A-A"Geologic Crms Scction A-A','Geologic Cross Section B-B'Geologic Cross Section C-C,Geologic Cross Section C-C'Cross Sections -Slmbols Expla"ation9roundwatef MdpVegetation Co--unities.Pd1glE*.h 9""!*ation for'Baraeys'Canyon' HghwaU SectoiDesip-Be'lh Configrration of Mel-C6Desip Bench ConfiEuration of Mel,East:West Cross Sedion Barneys pitNorth-South Cross Section Barievs pitEast-West Cross Section Mel-C.o-pitNorth-South Cross Section Mel-Co pitCrushing/Stacking Flow Sheet #6Plot Plai .Illustratioq of Pad*-"ogrg:ol Qfection Treach - nna

-Oraaing.

Process_Piping T1e-nct QlsdingF"d Detection PipingProcess & Pond aieaTection DetailsProCess & Pond Area Gradino PlanCarbon Adsorption - Flow ShEet #2ACarbon Desorption - Flow Sheet #3Carbon & Gold Recovery Flow Sheet #4

o REVISED 9-29-89

Plate I

Platc tr

Plate Itr

Plate tV

Plate V

Plate VI

Appendix A-IAppendix A-trAppendix BAppeudix C-IAppendix C-trAppendix C-ItrAppcndix D-IAppendix D-trAppendix EAppcndix FAppcndix GAppendix H-1Appendix H-2

TABLE OF CONIENTSCONTINT,ED

LIST OF PI"ATES

Project Site Map

Pre-disrurbaacc Site Map

Facilities Iayout & Operational Surface Water [danegemGtrt Plan

Baseline Soils

Surface Watcr Drainage Area Map

Rcclamation Plan Map

LIST OF APPENDICES

PAGE#

. in pocket

. in pocket

. in pocket

. in pocket

. h pocket

. in poc&et

oEat_oen Canyon and Mel-C.o Deposits Geologic Cross SectionsGeolo$c Dri[ ltole Logslageline _Water Qrrality DataSoil Profle DescriotionsSoil Qualitv Data

'

Acid/Base ?otential l-aboratorv ReoortOperational Imooundment Stale eanaciw CtnesDtsip Specificitions for Chainels and nbadsiae DitchesGrading/Follodation SpecificationsI-i"er SpecificationsScepage CalculationsReclamation C.ost Estimate SpreadsheetRecla-ation Cost Estinate 4tssumptions

..-,

UREVISED 9.29.89

FORM MR-MO(Rev i sed 7 /87)

- a

-2-

Deta i l ed I n fo rma t i on p resen ted i no f f n ten t and app rop r l a te sec t i ons

t h e a b t a c h e d N o t i c ea r e r e f e r e n c e d h e r e i n .

NOTE:

I . GENERAL INFQBMATI0[ (Rule R6t3-OO5-' t04)

I . M i ne Name:

Minera l (s ) to be Mined : G o l d

Name of Appl icant or company: KenJrego!,! , Explgrat ions (Ausrrat ia) r , ta.Corporat ion (X) partnership <ff i

Permanen t Address : p - r \ - Roy 1 I 48' l

O F a s t S o r r t h T c m F t p

S - a ' l t T , a k e C i t v . I i t a h A A 1 A - 7

2.

3 .

4.

5. CompanyName:T i t l e :Addres s :Phone:

Representa t ive (o r des ignated opera tor ) :_Mr . Gera ld D. Schur tz

5 .

7 .

Locat ion of Operat ion:County ( ies ) sa l t Leke Coun lvTownsh ip : z sec t ion : TTownsh ip : Ran le : Tw Sec t ion : 3 , 4 , 5 , 6Townshto, E- nander -- Section:

-T6---3s ---3w-

1;-Z;-TnOwnersh !p o r the land sur face : p r iva te (Fee) , pub l i c Domain (BLM) ,Nat ional Forest (usFs), state orT[I i i6r other: ( pr ivare )

Name:Name:Name:Name:

K e n n e c o t t ( a l l _ )( s e e S e c t i o n 1 . 2 . 1 )

AddressAddres sAddres sAddres s

See Alrove

8. 0wner(s) of record of the minerals to be nr ined:

See Sec t i on 1 .2 .2Add ress :Address :Address :Addres s :

Have the aboveIf no, why not?

owners been no t i f ied in wr i t ing? yes _x No

Name:Name:Name:Name:

9 .

manager Envi ronmentEl ErJgl lneer in !

10. Does the operatoropera t ions on the

have I ega ' l r i gh tI and covered by

to enter and conductth i s no t i ce? Yes x

min ingNo

FORM MR-MO(Rev i sed 7 187 )

-3 -

oI I . i , lAPS (Rute R6t3-005- t05)

l . Base Map

A t rue and cor rec t topograph ic .g l tq map. (o r maps) w i th appropr ia tecontour in te rva ls must be submi t tec w i ln ' i r , i t Not ice wh ich show a l ] o fthe i tems on the fo l tow ing iheck t is t . - i f , r " i . . le

shou ld b ; ipprox imate lyI i nch = 2 '000 fee t (p re r6 r i l t v . u i cs z . i r i nu te se r ies -o r -equ iva len ttopograph ic map-where .ua i l iu r i l - s r lon ing ' i t . to . . t ion o f lands to be; i lff:;:,

i n. surri ci ent detair io i.iri t '.. i iur i i ion-or-p.oioseo surrace

P' lease check of f each sect ionshow:

(a) Ploperty boundar ies of surface ownership of a i l rands' 'h ich are to be a f fec t .o -oy i te - tn in ing 'Sp i i . t ions :

(e ) Acreages proposed to be d is tu rbed or recra imed each yearo ther su i tab le t ime p . i i oO-

as i t i s d rawn on the map(s) . Does the mao

X(b ) Perenn ia l t i i : 1Tr , , sp l ]ngs and o ther bod ies o f wa te r ,roads ' bu i ld ings , rand in ! s t r ips , e r . i i i r i i r t ransmiss ionl ines , wa te r w i t i s , ; i i " i no g . r p ipe r ines , ex is t ing we i l s o rboreho l€s , o r o the i e r i s t ing su r face o r subsur face fac i r i t . i esw i th in 500 fee t o f tn . p ioposed min ing opera t ions i x(c ) Proposed rou te-o f access to the min ing opera t ions f romneares t pub l i c i t y ma in ta ined h ighway iu i [ - r . . r . app .opr ia te tos h o w a c c e s s ) ;

" ' r " n s J \ ' ' s F J L q I s q P P r v P r I c r l t

x(d ) Known areas wh ich have been.prev ious ]y impacted by min ing orexp lo ra t ion ac t i v i t i e i

" i i n in the p roposed min ing permi t a rea . x

(orS e e S e c t i o n

5 . 1 02. Surface Faci I i t i es Map

f , , t : t133?. fac i l i t ies map sha l l be prov ided a t a sca le o f not . tess than

[QgM MR-Mo(Revi sed 7 187)

Map Checkl i st

lH: . check of f each sect ion as i t is drawn on the map. Does the map

(a) Proposed sur face fac i r i t ies , . incrud ing but not r imi ted tobui ld inss, s ta t io lyy r in in i rp i ; ; ; ; ; ;s 'J iu ipment , roads,ut i l i t ies , ?gyer r in is , propoi .d dra in ige- iont ror s t ructures,and the rocati :n^9r-toisbi i .storage areas, overburden/wastedumps, ta i r ings or -processed was i i - r i i , i i i i ies , d isposar areasfor overburdei, sor i o inj- i iqr io -r. i i i i

i ' i .o

wastewaterdl s;harge, treatment -anJ-contai

nmeni - i i i i

i i r .u i x

-4 -

d isposa l a reas ,

fac i I i t i es :

etc. ) :see-Sec$.-qn .L 13

:. E,fl---min ing , on-s i te

(b) A border c lear ly ou t l in ing the ex ten t o f the sur facedlsturbed area proposed t6 be af fected by mining, andof acres proposbd lo oe jiri.t.o; the number

+(c) The locai lon of known test bor i ngs,pi ts, or core hol es . x3. Add i t iona l Maos

l f l l ' f f i l : t*[ i ! ]0311,3I: l :nes mav be required as appricabre in accordanceI I I . OPERATION PLAN (Ru le R6. t3_005- l05)

l . Acreage to be d is tu rbed:

Mlnes i te (opera t ing , s to raqeAcces s/haul ' roads / ; ; . ; ; ; ; ; ; ; 'Assoc ia ted on_s i te p ro i i ; ; i ;g

Descr ibe methods and procedures to beprocessi ng and concurrent reclamat ion.

2.Total

employed for

3. Depth to grounduater ( i f known) 120+ f ee t ' ; 1 .

FORM MR-MO(Rev i sed 7 187)

-5 -

4 . Th ickness o f so i l mater ia l tobe s tockp i I ed .Area f rom wh ich so i l mater ia l can beVo lume o f so i l to be s tockp i led

(c ross re fe rence w i th i t im IV_I7)

5 . Th ickness o f overburden

6 . Th ickness o f m inera l depos i t .

7 . Vo lume o f re fuse , ta i I i ngs , andprocess i ng waste s tockp i ie i .

8 . Acreage o f ta i l ings ponds and waterstorage ponds to be constructed.

sa1 vagedL2 i nche s

475 acres670 .09o cu . yds .

@t ions2 . I and 3 .1

S e e S e c t i o n 3 . i

f t .

f t .

. l r_ lSO , OOO_ cu. yds .( spen t l each ma te r i a l )

See Sec t i on 3 ._12_ ac res9 ' Descr ibe how. topso i l o r subso i l mate r ia l w i l l be removed , s tockp i ledand p ro tec ted . See Sec t ion 3 .9

10. Descr ibe how.overburden mater ia l w i l l be removed and s tockp i red .

I I . Descr i be howdi sposed o f .

ta i l i ngs , was te rock , re jec ted mate r ia l s , e tc . w i l l beSee Sec t ion 3 .10

12 . Poten t ia l l y tox i cthe nature of anygenera ted ons i te

mate r ia l s mus t be ana lyzedtox ic mate r ia l s wh tcn i r i l t(See Ru le RE l3 -O0t - l23 ) .

fo r tox ic i t y . Descr ibebe used, encountered , o r

S e e S e c t i o n 3 . 1

ec i f y conducted

t3 .

NOTE: The D iv is ion may s t ipu la te acd i t i ona l ana lyses .For each ta i l i nos pond , sed iment pond , o r o ther ma jo r d ra inagecon t ro l s t ruc tu ies , a t tach Oes ign d raw ings and typ ica lc ross -sec t ions .

FORM MR-MO(Rev i sed 7 /87)

-6 -

15 .

14 . Descr ibe any proposed e f f luen t d ischarge po in ts (NP0ES) and showthe i r l oca t ion -on the map p rov ided und6r i tu le R6 l8 -oo5-105 .2 . G ivethe proposed-d ischarge ra te and expec ted water gua l i t y . n i i i c r rchemica l ana lyses o f such d ischarge i f ava i f .b ld - rvJu : " . r , io . i s

Vegeta t ion - The opera tor i s requ i red to re tu rn the land to a use fu lcond i t ion and rees tab l i sh a t leas t 70 percent o r i l re p ie r in lng-vegetat ion ground cover (as measured oh si te before mining oi 'ons im i la r ad jacen t a reas i f a l ready mined) :

- - -

The ground cover percentage f igure is de termined by sampl ing andaverag ing the vegeta t ion type( i> on the areas to b i m inbo < ieeattachment I for sampl i ng miltfroOs I .

(a ) Veqe la t ion , Survev The fo ] low ing in fo rmat ion needs to becompte ted based upon the vegeta t ion survey :

Sampl i ng method used See Sect io-n 2 . 5

Number o f p lo ts o r t ransec ts See Seer i on - .5

Ground Cover

Vegeta t i .on (perenn i a l g rass ,Toro and shrub cover)

L l t te r

Rock/rock fragments

Bare ground

Revegeta t ion Requ i rement _ 70 percentor above vegeta t ion f igure)

" t l t ln ln l r : : : r

t4) predominant perenniar species of vesetat ion srowinsSee Sec t i on 2 .5

Perce n t

S e e S e e t i e n 2 . 5

l l I t

l00z

See Sec t i on . 2 .5

FORM MR-MO(Rev i sed 7 /87 )

-7 -

(b ) ?hotograohs^ : .T !e opera tor may submi t photographs (p r in ts ) o fthe s i te su f f i c ien t to show e l i i i i ng -v lge ta t ion

cond i t ions .These photosraphs shourd snow th; ; ; r ; ; ; r ipp. . r inr . ' inocondit ion of the area to be affectid ino may'ue ui i . i i ied forcompar ison upon recramat ion of the i i i . . Ff io i ;g; ; i l ; -snouro be' c lear ly marked as to the loca t io r , o i i in ta t ion and the da te tha tthe p ic tu res were taken.

16 ' So i l s - The p lan sha ' l l i nc lude an o rder 3 So i l Survey (o r s im i la r )and map ' Th is in fo rmat ion is needed to Je ie rmine wh ich so i l s a resu i tab le fo r s tockp i I ing fo r - revegeta t ion . Th i s so i r -Ja t i 'may

beava i lab le f rom the roca i so i r con ie iv ; i i ; serv ice o f f i ce , oF i f onpub l ic lands , f rom the rand management agency . The map needs to beof such sca lg ; f l ra i to r r - i yp . t can be acc i ra ie ry de termined on theground (see a t tachment I ) - . '

(a ) Each so i l t ype to be d is tu rbed needs to be f ie ld ana ' l yzed fo rthe fo l low ing :

0epth o f so i l mater ia lVol ume ( for stockpi I i ng)Tex tu re ( f i e ld de te rmina t ion )pH ( f i e ld de te rmina t ion )

(c ross re fe rence w i th i tem(b) h lhere there^are problem soi l areas (as determined f rom the f ie ldexaminat ion) laboratory analy i is - rav-ue- i . . . r r . ry for some ora l l o f the fo l lowing p i r i r . t . . r ,

Elec t r i ca l Conduc t i v i t ySod ium Adsorp t ion Rat i6Saturat ion 19rg* i c -mat te r percentageAva i lab le PAva i lab le N-NOrpH ( laboratorviTexture ( laboiatory)

S e e Se^ctj-o'J*.4i. nche sr r r r C U . y d S .

1 t

I t t ! I tTr r t r \

_ S e e S e c t i o n ? - 4

l l

NoTE: Soi l samples to be sent to the laboratory for analys is need tobe about one p in t - i ! s iz i , -p ro ier rv . i .o . ieo , " ino in pras t ic bags. Each o f thesoi l hor izons on some s i t6s-mi ! need to be sampred.

nar ra t i ve descr ip t ion o f the georogy o f the area and/or ac ross sec t ion . See Sec t ion 2 .L

17 . Prov ide ageol ogi c

EORM MR-MO(Rev i sed 7 187)

-8 -

V. RECLAMATION PLAN (Rule R6.t3_005_l09)

l . L i s t cu r ren t land use(s ) o ther than min ing : See Sec i . i on I .3

2 , L i s t fu tu re pos t - rec lamat ion land_use(s) p roposed: See Secr i on 5 - .1

3 ' Descr ibe each phase o f rec lamat ion o f the m ines i te in de ta i l underthe fo l low ing ca tegor ies : -

(a) Di sposa ' l o f Trash: :? : tL : . , !? I_9! ] lo lns, foundat ions, t rash and other waste mater ia tswi I I be d i sposed o f .

IV. IMPACT ASSESSMENT (RuIe R6.I3-005.108)

P lease p rov ide a genera l na r ra t i ve descr ip t ion iden t i f y ing po ten t ia ' lsur face and/or subsur face impacts . t ^ lhere app l i cab le , i t t i i descr ip t ionshou ' ld inc ' lude sur face and g ioundwat . r sys i . r r , spec ies o f h igh in te res to r the i r c r i t i ca l hab i ta ts , gx is t ing to i l - i . ro r r . . s fo r rec lamat ion ,s lope s tab i l i t y , e ros ion con t ro t , a i r - l ua r i t y , and pubr i c hear th andsafety.

See Sec t ion 4 .0

(b) _ 9ack f i I I i nq and Grad j nq

uescr r0e equrpment and methods to be employed, amount o f mater ia ls tobe moved and f inar d ispos i t ion o i anv i loc ip i ieo mater ia rs .S e e S e c t i o n 5 . 3

- - - r ' - - '

! . ) So i I Mate r irn o rder to ree :1oep9nJi.;-";-;;mff|lli.3,ni3ii:oi:,:I;'"ll,ll,:i",|::i1yhas to be red is t r ibu ied-on the i reas to be reseeded. i f thes tockp i led so i l i sn ' t su f f i c ien t ro r tn i i , ,o i i ' bo r row a reas w i l lneed to be loca ted .

How much so i l ma. te r ia l i s p lanned to be pu t on the area to bereseeded? i nchesSec t ion 6 .? )

- 9 -

$ lhe re w i l l t h i s ma te r ia l come f rom? S p p S p n l ' i n n s ^ 4 a n r l 5 - 4

How wi ' l l i t be t ranspor ted and spread?

EQSU un-uo(Rev i sed 7 187)

_(d) Seed Bed p1gg1g!Q!Descrite-Ed-T6-e seedbed wi l.t beU S € d . s a o e a a + . i

prepared and equipment to be

( TheDivi sion-JEco6teiEr ipp ing o(e) Seed Mix tu re - L i s t the spec ies to be seeded :

Soec i es NameSeed ing Rate

( ' lbs Pure L ive Seed/Acre)

S p e s p r . t i o n q - 5

i ngin t roduced adaptabt" lp . . i i i -o iprov l de a spec i f i c spec ies I i s t

I l ) Sqedinq Methoduescr ibe method o-p lant ing the

grass , fo rb , and browse seed and w i l li f reques ted)

S g e d . S o a ( a a l- - - - . . - . , . - , , ' i n n R ?

( rhe D iv i s ion -@dr i l l . o r i f h ro^ r r t r : .+ . ^ l , r l , . , - ' L -:_?I i I broadcast sebded, nir io" or rake the

seed w i th a range land or farmv2inch into the soi r.

- i . i i- i ;- in. ' ir l i . l i . i" i ir l" io

(g ) tq r t i I i za t ionDe s c rTE-e-f:-iITilEt i on me t hod a n d r d t€ . See Sec t i on 5 .g

seed I 14 toseed )

<Tn.0 iseeding of Z0O lbs. /acre of -J i i ro ,on ium phoi ;h ; i ;(h ) 0 therReve@tr ot ' f f i i [ t io. proff iT, such as mur chi ng, i rr i gat ion, etc. ,a r e p I a n n e d , d e s c r i b e ' t h e m .

- = o - R o n r i n n i o

at the t ime oI 8-46-0)

FORM HR-MO(Rev i sed 7 187 )

( see tfifif.iti'uu.;o)

Name ( typed or p r in t ) :T i t le o f Opera tor :Date :

PLEAST NOTE:

VARIANCE (Rule R6l 3-005_l I I ) :

4ny p ]anned dev ia t ions f rom ru le R6 l3_005_007Rule R6 l3-005-010 (Recramat ion ' i rac i l ces) must

(Opera t ing Prac t ices)be iden t i f i ed be low.

T i t le /Cateqorv

-10-

vI .

M-10(3) . . r t7 t0ra t , M-10{ rM-10 (4 )u-1 .0 (5 )M-10(12)M-10( 14)

( S e l - e c t e d R r e a s )

5:i, :::1, X:'li:.:.::q::::: g:,.1!.:! "1-Ci;,j yt' ii#,en t des crr b i ns andil ;';l;i;,';: :'i #iTFrix;t h g n e e d f a r f h a r r t r i r a a a r a r r :ll.^:.:!, f?:^!h. vari inci, -ino -ii

;;r;; i rg'iit.i;i; #illlii.;rr;i;l ;il1to be u t i l i zed.

D u r n p - e d E e R o u n d i n oF l i g h r l a t 1 s g r e a t e r t h a n Z 5 d e g r e e s% V e g e t a t i v e C o v e r ( s e l e c t e i - a r e a s )T o p s o i l S a 1 \ ' a g e a n i R e p l a c e n e n t

VI I . SURETY (Ru le R6 l3_005_ l lZ )

A Rec lamat ion sure ty must be prov ided to the D iv is ion pr io r to f lna l approva lo f th is app l i ca t ion- - ln c i i c [ i i t i ng- th i t - . rount ,

the D iv i s ion w i I I cons iderthe fo l low ing major s teps , - - - -

l ) C lean-up-and remova l o f s t ruc tu res .2> Backf i I l ing, .graqi n9 ind coniorr ing.3) Soi l mater iar- redis I r iuut ion and stabi ' r izat ion.1l Revegetat io l (preparat ion, seeding, mulching)11 Safety ano renl in i .6) Mon i to r ing .

To ass is t the D iv is ion in de termin ing a reasonabre sure ty amount , p leaseat tach a rec lamat ion cos t e i i im i te r [ i ch add ie i ies eacr r 6 r tne above s teps .VII I . SIGNATURE REQUIREMENT

I hereby cert i fy that the foregoing is t rue and correct .Signature of 0perator:

r r .n ;

Sec t ion 40-8-13(2) o f the Mined Lan.d Rec lamat ion Ac t p rov ides fo rmai n tenance o f con f i dent i a r r t y -con; ; r ; ; ; ; - ;e r ta i n por t ions o f th i srepor t ' P lease check to see tha t any in io rmat ion des i red to be he ldcon f iden t la l i s so labe led and inc lu led 'on ' r .p . r . te shee ts o r maps .Slirol,lilT::g fi

,:3;l?,:;,ili ioiiiioit ;i.; ;;_n;;;;;.oi tn;.;;oo,i tconf ident ia r In fo rmat ion Encrosed: (x ) yes ( ) No0899R

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 leachate processing 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

location -ap, Figure 1.1-r. project facitities wiu be locatcd as follows:

MainAccessRoad To*aship 2 South, Range 2 West, Sections 31 and 32

Tomship 3 South, Range 2 West, Sections 3, a, 5, and 6

Plant Site and Township 2 South, Range 2 Wes! Section 31

Barnep Mine Pit aad Dump Township 2 south, Range 3 west, section 36

Township 3 Sout\ f,ange 3 West, Section 1

Mel-co Mine Pit and Dump Tonmship 3 sout\ Range 3 west, sections

and Access Road 1r13,and 11.

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

1 REVTSED 9-29-89

L2 LandOcrncrship

l"J Surhe Omcotttp. All land surface within the project disturbed arca is ocned in fee by

Kconccott Corporation The r -"d Onmership Map, Figure 12-1" shows the surface land oumenhip in

the project area. A third party, Calvin J. Spratting and William Max Spratling originaly oumed the

roadway and right of way that provided acoess to a television broadcast tower owned by Station

KCP& located in the northeast guartcr of the northeast guarter of Section 34, Township 2 Sout\

Range 3 West. Kcanecott, through a land exchange atrargemert, has provided an alternate acoess

road to the TV tourcr site.

IGnnecott oums all land that will bc disturbed and all land adjacent to the proposed distubed

area The l-aad o*aership Map, Figure 1?-! shoun all surface land owucrship within an lii-plus

square mile area around the prqiect site. The names and addresses of surface land o*uers whose

properties are shown on the land map arc listsd in Table 1j-1.

2o REVISED 9-29-89

6Al-tNts, Y 5 UAN Y UN F'F{tJ.rtr \, I

s$

Jo

KENNECOTT LAND

EARNEYS CANYONGOLD OEPOSIT

1l uel-coDEPOSI

C-OPPERTONC O N C E N T R A T O R

\rT

tI

UILES

FtGt fRE 1.1-1 '

LOCATION MAPBP MINERALS AMERICA

KENXECOTT BARI{EYS CANYOI{ PROJECTS.|t l*. County. Utrh

GHAM P IT

6\BIN

Fioure I

Table 1.2-1 Surface Ownership

Name Address Comments

CdvinJ. Spratling

V/illiam Max Spratli4g

Copperton Improvement

District

Howard H. Halmes, Jr.,

et.al.

Star Route, Box 400

Pendleto& Oregon 87801

Deetb Nevada 89&23

208 South 400 East

Copperton, Ut 84006

28308. St. Maryway

Salt Iake City, UT

84108

1200 E. Charlton Ave.

Salt Late City, UT

84106

Road Corridor

Road Corridor

WaterWell

Sites

Property north

ofBarncys

Canyon mins snd dunps

Property north

ofBarneys

Canyon mine and d*pr,

sharas oumership with M.N.

Sweet and L.P. Connell

Evelyo P. Boyce

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 leases mingpt rights to the Barneys Canyon deposit from the State of Utah.

Table 1.2-1

Name

Surface Owaership (Continued)

Address Comments

Marjorie N. Sweet

Lois P. Connell

3O77S.5000Wsst

West Valley, UT

u12n

1200 East Charlton Ave.

Salt Iake City, UT

84106

Shares

ownership with

E.P. Boyce and L.P. Connell

Shares

ownership with

E.P. Boycc and

M.N. Sweet

Table t2-2

Nrme

Subsurface/Minerals Oumership

Address Comments

State of Utah

Division of State Irnds

and Forestry

Banick Resources

(USA), llic. (50Vo)

Royal Minerals,Inc.

(s0 vo)

3 Triad Center, #350

Salt Lake City,IJT

84180

P.O. Box838

Tooele, UT84074

150 South 600 East

Suite 5D

Salt Iake City, UT

8/074

State Lease for

Metalliferous Minerals;

Application N o. 73XJ N29?A

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

RKClaims

(subsurface only, Kennecott

olvls surface)

RK Clains

(subsurface only, Kennecott

owns surface)

EDITH DANIELSEVALINE HARMONGERALDINE KNOTTHOWARD H. HAYNES

TT UNPATENTED CLAIM

KENNECOTT SURFACE 2e

EIF 1'Tl

om

'MAXill4Ull4 AREAAFFECTED 8YOPFRATPNS

KENNECOTT SURFA

VIN 8 WILLIAMSPRATLING

--. 35( - -5

\ l( / - - l

\ 7

31KENNECOTT SURFACE

8 MINERAL

- - _ _ _Uu-e.ftn

F.F

STATE MINERALEASE 273e0

/

(M inero l )

{u--\-: . - r l

t \

FSPRATLTNGS 33-FT. wrDE coRRlDoR(Purchose by Kennecott in progress-surloce ond minerol

COPPER,TONIMPROVEMENT

DISTRICT

2

KENNECOTT SURFACE8 MINERAL

R.K CLAIMSROYAL MINERALS(Minerol)

BP MINERALS AMERICAKENI{ECOTT BARNEYS CANYON PROJECT

KENNECOTT SURFACE

PROPERTY MAPFEDE RAL

t / 2 8 / 8 8

scALE r.2000'2000 0 2000 FEET

Figure 1.2-1

o

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 aocess and, consequently,

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

through the property allows access to 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 &'ansmission lines 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 discussert in Section 2.3.

In addition to drilling, a number of trenches were dug with a backhoe, and access roads 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

Menagement Plan map, Plate III, shows the location of the proposed powerline. Propane for heating

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

Telephone service will be brought to the site via either the powerline or aocess road corridor.

Access to the project area will be via an inproved aooess road 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 Barneys canyon along the route shorm on plate Itr.

R"EVTSED 9-29,89

2(} SitcDcsaiptio

21 Gcologr

e r r Goologicscdng

The Barneys Caayon projc€t arca is located at the cast edgp of the Palcozoic core of the

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

Oquirrh Mountains are comlrcsed principatty of Pennsytranian and Psrnian miogeodinal sedimentary

roels with an aggregate thickness of morc than 35,000 feet. 'Ihe principal rock typcs are limestoncs

and sandstones that wpre depositcd cydically.

The Barnep Caayon and Mcl-Co.ioe prt sites are underlain by thc Permian Kirkman-Diamond

Creck and Park City Fornations. These units are moderately to stecply dipping in directions rargiqg

fron northwest at Mel-Co to north and aortheast at Baraeys Canyon 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 Barneys Canyon deposit and has been

preserved in a down-faultcd block of the uppcr plate of the Oquirrh thrust fault (Swensen, 19/5), as

shoum on the gcologic map (Figpre Z1-1). In addition to thc thrusting; the Paleozoic rocks have

been faulted by a number of northeast and north-trending higb-angle normal hults @grre Lt-L).

The projcct procass facilities will be sited on Quaternary allwial sediments to the east of tbe

bedrock outcrop tine. The Pleistoccne Har&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 floursr brccciaq and agglomerates crop out to the north and south of the process facilities.

- -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

GEOLOGY MAP

YTEE COT T'LTAIITS OFOUP- f f i

) !S|GN€O EY: IDIATIED rYr lo^I f :R.J .8 . . 1 cL .P I t / 26 /88

The Quaternary alluvium in the process area unconformably overlies the buried volcanic rocks.

t't ' GGolAg'/of ttfincralOePcits

The Barnep and Mel-C-o ore bodies will be dercloped as fiilo separate open pits. The Barnep

ore body is hosted by the lower Permian Part City and Kirkman-Dianond Creek Formations. The

host roc& litholog consists of silty dolomite with chert interbcds and calcareous sandstone,

respectively' in the two stratigraphic units. The gold-nin e:rlliz?A zole in the Barnep deposit has

bccn completely oridized aad cssentially ao sulfide minerals are prescnl The deposit is

characterizcd mineralogically b the presence of clay minerats which are hydrothermal alteratioa

products" The overburden at the Barneys pit will be comprised of dolomite with chett interbeds

and sandstone' strata dip gently to the north and the naximum ore depth is approximately 600 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-angle norual faults. The geologr of the Barneys deposit is

depicted in cross section on Figure A-I-1 which can be found in Appendix A-I. The conteats of

AppendixA-I is confidential and is therefore bound separatelyfrom the nainbodyof this document.

The Mel'co ore body, locatcd approximately 15 miles southwest of the Barneys deposil is

hosted alnost cathely by calcareous sandstoncs of the lower pennsytranian Kirha&Diamond &eek

Formatiou' Unlike the Barncp dcposit, the Mel-co ore body hrs not bccn completely oxidized and

sulfide ore, characterizcd by the prcs€noe of pyrite and marcasitg oocurs in the deeper parts of the

ore body' overburden at Mel-co will consist of sandstone and quartzite. The strata hostiag the

ore body are vertically or near rartically dipping the geolog of the Mel-co deposit is shoum in

cross section oa Fig're A I-4 crhi.h can arso bs found in Appendix A-I.

11

e.r q Subsurh€ ereoQg of the pr,oess Facilities Site

The p,rocess facilitie.s site is outtined on the geolqgc -ap (Figure LL-L). Dri[ing has been done

in the process site area both for the purpose of condeunation (determination that economic mineral

deposits arc not presenQ and foundation te.stin& The locations of these drill holcs and boriags are

sho*n on Plate tr and geologic logs are prcsented in Appeodix A-tr. Condemnation driling by

KsDnccott in tbe procoss plant area has consisted of threc rotary-rer€rse circulatioa &ill holes.

Geologic logs of two holeg BC-!E and BC-150 are arailable. Foundation investigation studics by

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

Thc locatiou of the dcepcr augcr borings are also showa on Plate tr. Additioaal geologic data

oomes from logs of water supply wclls in tbe area The locations of water suppb wclls uscd in

qraluating the site geologf are shown on Plate tr, the Pre-Distubancc Site Map. Sourccs of

grounduater information for the area are discussed in section 23.

No faule or other geologic structures have becn identified by the linited amount of drilling that

has been done in the process site area Mapped geologic structures in the Permian-aged bedrock 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 sections tbrough the proposed process facility area have been

prcpared rsi'g available gcologic log!. Tte lines of section are shocm on Plates I and tr. The

sections are show! on Figures ?^t-2 thtols 2"L-7. The scales, both vertical and horizonta! of the

sections are rariable depending on the leogth of the section and topographic retief along the line of

section Hence in rnalring direct comparisous between sections, the effects of scale chaDges must be

taken into account. the c':planation for thc spbols used in the cross sections is shoqm on Figure

z1-8.

12

Cross sections A-A' (Egtrre Ll-Z) atrd A-A' (Figrre 21-3) are northwest Estrding scctions

drawn thtongh the process site condemaation holes and then Eore thnn a mile southeast of the site

through wells K-405 and W-32, respectively. The lines of section for each of thcse cross sections

are shourn on Plate I. Well K-405 is a lGnnecoff water production well &illed adjaccnt to the aew

Co,ppcrton Conccntrator. Well W-32 is one of the two Copperton comnunity watcr supply wells.

These soctiors sbow that the allwial deposis near the project site were deposited on a pedinent of

uderlying volcanic rocls and that ths dominant bedrock in tbe area is Tertiary volcanic flour.

These sections also depict the aquifcr t!'pes in the project area In dril holes BC-148 ald BC-150,

the occurrence of clap identified in the rotary drill ortting are interpreted to represent air-fall

ttttr beds. In each drill hole, the groundwatcr surface is closely associated with a tuff-derived clay

layer. As discussed in Section 23, hydrogeologic data suggest that tuff beds in the volcanic flow

scquence scrvg at least locally, as confiningbeds or aquitards.

The geologic log of wcll W-32 desaibes volcanic roc\ prosumably Tertiary io age, ovcrlying

clay-dominant sediments described 3s hke bed sediments and presumably of Pleistocene age. The

nost reasonable e':rplanation of this incongnrity se€Drs to be that the volcanics were deposited on top

of the apparent Lakc bed sediments by a debris flow or other mass mowmcnt. The dcscription in

the log of "rockc in mud" within oocrulencc intcrval of the rctcanic rocts supports this contention"

Goss scction A-A"' @gure 2.14) is a northwest-trendiug section that cfcnds across the cntire

procqss area. Agai!, the relationship of the ground water surface to the volcanic tufr layers in the

volcanic 0oun is apparent. Becatse the coademnation holes were drilled by a rotary dri[ detailed

logs of the uncossolidated allwium were not prcpared- The logr of the auger holes arg as a result

of the drilling metho4 more detailed. Attempts to correlate atluvial lithologies between foundation

a

- -REDACTED- -

ORIGIIIAL LOCATED III DOGU COIIFIDENTIAL FILE

te 2.1-2lfrl BP MTNERALS AMERTCASz

xElr*Ecorr 3ii$:L?ilrrolr PRoJE*

CROSS SECTION A.A'

COXSULTATTS OROUP

ott 'onto "o., 'B' lot^tt* '

t*-Ti i i-3r /88

- -REDACTED- -

ORIGINAL LOCATED IN DOGU CONFIDEI{TIAI. FII.E

Ffgure 2.1-3r-\ BP MTNERALS AUERICA\^lty KElrxEcoTT BARLEYS CAr|yOlt pRoJEcTV S.tt !rL. Ccnty. Utrh

CROSS SECTTON A'A''

coraaulTAl{Ts oBOUP

) E S I G N E D 8 Y , I D R A F I € 0 8 Y ' l O e r t ,R.J .B . I c . r_ .p . I t r3 r l88

- -REDACTED- -

ORIGfNAIJ LOCATED IN DOGU CODIFIDEIITfAL FILE

Figure 2.14

/-;\ BP MTNERALS AMERTCA\Drl KEXNECOTT BARNEYS CANYON PROJECTV Sall Lake Conrv, Utrh

cRoss sEcTloN A-A"'

COXSULTAXTS GROUP

DESIGNED 3Y: IOTAFIED rr" IOeir i-R.J.B. l c.r_.p. 1 r /3o/88

- -REDACTED- -

ORIGINAL LOCATED IN DOGU CONFIDENTIAL FILE

BP IUIINERALS AMERICAKENTIECOTI BARNEVS CAXYO'I PROJECT

Srlt L*. Cqlnly, Ut.h

CROSS SECTTON B-B'

- -REDACTED- -

ORIGINAL LOCATED III DOGM COIIFIDENITIAL FILE

BP MINERALS AMERICAKEXXECOTT BAR}IEYS CAIIYO}I PROJECT

S.tt Lrk. Co|J||ly, Utlh

cRoss sEciloN c-c'

COTAULTAXTA OROUP

D I A F T E D B Y :C.L.P

- -REDACTED- -

ORIGINAT LOCATED Il{ DOGU CONFIDENIIAL FILE

2.1-r-\ BP MINERALS AMERICA\Df/ KExlrEcorr BARNEYS cAllvox PRoJEcr

\-/ Sall Lal" Counly, Utah

cRoss sEcrtoN c'-c"

9jCl corsulTAxrs eRoup- - f f i

D E S I G N E D 8 Y . I D R ^ f I E O 8 Y . I D A T E 'R . J . B . I C . L p . I \ / 3 O / B B

- -REDACTED- -

ORIGINAL LOCATED IN DOGM COIIFIDENTIAL, FILE

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

cEorocrc cRoss sEcnoNSYMBOLS EXPLANATION

D € 5 | G N € D g Y , I D R A F T E D 8 Y , l D ; - ER . J . B . I C . L P | 2 / 8 / 8 8

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 process site area

Goss section B-B' (Figure Zl-t is a northeast-trending section through the wpstern-most

proposed leach pad site.

Cross sectious C'C (Figure 216) and C-C' (Figure 2.1-7) are, raspectively, aorthurcst and

northeast-trending sections in the area of the eastern-most leach pad sites. AgaiD, as was the co.e

in scction A-A'" (Figure 2.14),lithologic correlation bctween drill holcs is difficrttt The geologic

oacurreDae of very minor pcrched grouldwater is depicted in these cross sections. This pere,hed

grormdwater is discusscd frirther in Section 23.

ZLa Scisnicity

The site is located near the eastgrn boundary of thc seisnically actirr Basin and Range

Province. Regional scisnicity maps have bcen compiled for Utah based on historic data from 1g50 to

1980 (SHB' 1988). Small to modcrate sized carthquakes are numerous in the State and are largcly

associated with the wasatch fault zonc and Basi', and Range faults such as those on the west side

of the Oquinh Range. The closest recorded earthquake was a 1962 rnagnituds 52 errcnt in Magna

approximately 9 miles north of the site.

TVo mapped fault sptems with Holocene activity are aear the site. They are the Wasatch Fault

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 suggests the possibility of active faulting; however,

interpretation of low-sun anglc aerial pbotograpbs and aerial infrared photography indicate that

there is no surface rupture in the Magna area (SHB, 1988). This has been interpreted as evidence

that there have been ao events larger than rnagnituds 6.0 near the site area during the late

Quaternary.

The site does lie within the UBC-3 seisnic zoac and nerinurn credible earthquakes for ranious

faule in the area have been calctrlated The estimated horizontal bedroc& acceleration resulting

from a Daxinun credible carthquatc of Magnitude 7.6 fot the Wasatch Fault was ued for the

projcct site. An effective pcat horizontal ground accslcratioa of 0.189 (corresponding to a 500 year

resurreuce inter%l) was used for the carthquakc desigg evaluation The earthquake de"ign

eraluation indicated that permanent deformations rmder this design accelcration value would be lcss

than sh inches, which is cousidcred well within sxfe lirnits. It was also determined that major

earthquakes generating accele'rations of 02g to 03g would probably create slides of sufficient 'nars

is dqmage the pad liner. lte rectrrcnce interyal of these events is estimated at 600 to 1200 years;

thug a *nnll fi5ft of earthquake-induced liner damage is inherent with &e use of heap placemeut by

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 prccipitation fails 6s snow from December throryh

March and the remainder falls as rai4 predominately in the Spring. Summer precipitation is largely

characterized by thunderstoros influenccd by the orographic effects of the Oquinh Mountains (SCS,

194). Auual snowfall along the Oquirrh Mountain foothills is approximately 81 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 Canyon Project site lie.s alo4g the southeastera flanlr sf the Oquinh Mountains.

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

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

runoff contributes to the Jordan Rivcr located roughly fine milcs away. Continuors stream gadng

has 16vg1 been performed on Baraep &eek Other cnall, intermittent and ephemeral drainages in

the project arca are localized by the topography of the Barneys Canyou project site which consists

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

feet alo4g these foothills. Many s-all valle],s witb watershed areas less than one square mile nrn

tbrough the site. Becarse of their smal drainage areag runoff from these cphemeral channels is

srnnll

Bancroft Spring ernanates in the srnell rnalley south of &e proposed leach pad area @late 2) and

provides a souroe of flow in that drainage for a part of the year. Only during very dry periods

does Bancroft Spring cease to f,ow.

The Mel-C-o pit site is located on the draiugc divide (eL ?6ffi top) south of Barncys Canyon

and at the head of a snall tributary to Dry Fork Dry Fork is ephemeral and the nmoff from the

watershed drains iils f,inghern Creek approximately two miles south (Figrne 1.1-1). The Mel-Co

umste dump will lie on the southeastera edge of this ridge approximatety 25fl) fect southeast of the

pit area Water frqp fhis s1.e6 {3eins into the Dry Fork basin.

B

Surfacc watcr qurlily has bccn a\aly?td from serrcral of tbc springs in the arca. Barnep Spnng

(s'318) (Figurc 231)) is locatcd approximately 12 miles southcasr of ths projca arca Warcr

quslity aral)4sis indicatc high lercls of total .ti"solrrd solids (TDS) (1 g90 _ 2& og/l), cblorides

(304 - g2 n9D, aad sulfatcs (187 - %3 rrgt[. Watcr pH ranged from 23 to 83. Barncp Spring

is bcliercd to originate from ths Tcrtiary Volcanics. Crystat Spnng (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 spriags cmit good quality watcr wirhin thc staadigds set by

thc Utah Dcpartment of Heatth" Thesc spring appear to eEanare fron th; p-ennsflvaaian-age, whirc

Pinc Formation. Bancroft Sprrng cnanates in thc small rallcy south of tbe proposed lcach pad arca

@atc tr) and provides a sourcc of flow in that draiuagc for part of the year. Bancroft Spring

spPears to rcsult from iufiltrating subsrufacc 0ow in altuvial fi[ bcing intcrccpted by a buried

occlurcnce of quartz latite which oocurs at the locatioa of thc spring. Flow rates fre6 rhis spring

havc becn cstimatcd at 30 ealloEs pcr minute, tbougb tbc consistcng of rhit flow ratc i5 rrnknsq4l.

Aquifer rcc;harge frs6 rhiq spring is probably low due to the low permcabitity of the volcanic

aquifer' This spring bccn sampled for water quality paraneters and falls wirhin Utah Dcpartmcnt of

Hcaltb standards. Thc Baraeys C,anyou tuaael water sourcc, located approximatcly two miles

southcast of 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)Eis rDay bc fouad in Appendix B @arncs and

Moore,1988).

Several suface water sites have in the past bcen analped for water qualiry downgradient of the

Mcl-co mine site. Historic concentration levers from surfacc *1s sampre sitcs 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?,800 mg/l), copper (6 - tLz mgll), chtoride (r,g00 - aGO Eyl) aad very low pH rzlucs acar 3.0.

ro REVTSED 7-20-8f.

A cooplete fisting of ttrese valucs may be found in Appcndix B @ames and Moore, 1988). Water

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

elloride but there are uaexplained fluctuations in tbc values listcd (Appcndix B). At tbc Dry Fork

rhops site (S'29), located further dowogradient, good watcr quality gencrally cxists witb TDS from

281 - t'110 mg/l. Sulfate and chloride lcvcls were also low (Appendix B) @ancs and Moorq lgBS).

o u.7 REVISED 7-2&88

23 Grounftntcr Hydrrologt

23J R€i@alAquifcr Charaacrisics

The Barneys Canyon 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.

Grotmdwater geuerally flows in an easterly direction from the Oquirrh Mountains toward the Jordan

Rircr. Depth to the water table in this part of the Salt l*ke Valley geuerally increases with the

risc in topqgraphic elevation Thereforg groundwater depths wilt be grcatest near the mountains

and shallower as distance from the mountains increases. lltis occurrence is characteristic of a

groundwater rccharge area (Wadde[ Seiler and Solomon, 19&7).

the aquifer matcrials along the nargins of the SaIt Iake Valley are charactetizrA by thick

unconsolidatsd allwial sand and grarrel deposits soafnining lenses and beds of finer gained sands,

silts and clap. the aquifers along the valley margins are generally unconfined and are recharged

from precipitation, seepage from ephemeral streams, inigation ditches, pond6 and resenoirg and

secpage from be&ocll Recharge from the bedrock is bclieved to contribute the greatest volume of

water (approxiBately 45% of. total recharge) to the ralley-fill aquifer. The bedrock is predominantly

recharged in the upper cleviations of the oquirrh Mountains (waddell ct 4 19g7).

Pump tests have bccn performed ou the ooarse grained rmconsolidated aquifer beneath the valley

benc,h aear Bingham Canyon The hydraulic conductivity of the aquifer -aterial has been estimated

to range from 1.0 x 104 to 35 x t04 feet per second. Hydraulic gradients are estimated at 0.063

and substratum porosity is approxinatety 30 pcrcent. Usiag these figrres as a basis for the Barnep

Canyon area' average linear groundwater rrclocities could range from @ to 2300 feet per year

(Waddelt Seiler and Solomon, 1987).

Groundwater quality hes also been characteiznd at several locations downgradient and north of

Barnep Canyon- \ilatcr analyses show 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 proposed Mel-Co Pit and waste dump is located near the topographic divide bctween Barnep

Canyon on tbe north and Dry Fork on tbc soutb- Dircction of groundwater flow froa this ridge is

crpecred to bc generally subparallel to the groud surface. As an upland rccharge area, groundwater

depths are great (approxinately 600 feeQ and hydraulic gradieats would bc cxpected fs gs highgl

than gradieuts on the bench" Tte bedrock aquifer is comprised of &actured sandstone and

limestone.

233 Local Recharge (aaraasisics

The rate of groundwater recharge is dependent on the hydraulic e.haracteristics of the surfcial

soif underlying rmconsolidated sediments and bedroclc Dcscriptions of the surficial soils by tbe Soil

Conservation Service (SCS) indicate clay and silt loams are present in the Baraep Canyon project

arca. Infiltration rate is modcrate (05 - Z0 inches per hour) and permeability is slo\il to moderately

slow (SCS, ln4). Runofr from precipitation cwnts is rapid as these fine-grained soil layers linit

the infiltration and percolatioa of watcr do*lward into the soil horizon Laboratory permeability

tests were also conducted on samples of compacted surficial soils obtained from the leach pad areas;

Table 2-11 lise the results of these tests. The soils from the surface to a depth of 3 fcet wsrc

clas"cified as silty to gravelly clay with compacted permeabilitics 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

Site

TP-1

TP.5

TP6

TP.l1

TP-U2

Sample

Deoth

05-15

05-20

052.0

05-e0

1.0-3.0

Material

Silty Ctay

Ctaywith fine sand

Sandy claywith gravel

Saady day with grarrel

Gravelly claywith sand

Permeabiliw(.cn/sec)

< 1r10-7

1.1x 106

< 1x10-7

< 1x10-7

1.1x 10-5

Beneath the surficial soils, the rmconsolidated altwium consisc of highly variable, layen of

clay' silq san4 gavel, cobbles, aad boulders. Most of thc -aterial cncountered is poorly sorted

including clay' silg sand and gravel As discussed in Section 2.1. clay or clay-rich sediments appear

to be the dominant material types in the alluvium on site. The stratification of the layers is higbly

variable and wide changes in strata thic.kne.ss occur laterally, as indicated by the geologic cross

sectious illustrated in Figures 21-2 througb 2"1€. The permeability of these materials was tested

in-situ through the use of packer tests in interrals up to dcpths of 65 fecL Terblrc 232 shou6 thc

results of this tcstwork. The mcasured permeabilities range from 3.9 x 104 to 6.9 x 106 on/see

The lon'c'r pcrncability strata in the alluvium would tcnd to irnpede vertical flow of rechargc

watcr and form perched water tables. The auger drilling conducted in the alluvium did encounter

isolatcd satruated conditions in four borings where the water was perc,hed above the deeper bedrock

aquifcr within grarrelly clay or sandy gravel between clay layers. The locatiors and depth of the

water table are as follovn: B-2 water depth 265 fee! B-28 water depth 2,.7 feo\B-3 water depth

%.9 fee\ andB'24 water depth 6.7 fceL Geologic cross sections in ngures ?^!-6 and21-? show

n

Table2}2Permeability of Lcach Pad Area Allwium

Borins

B-l-lvfw

B-28-lvfW

B-s-lvfW

B€.MW

B-10-tvIW

B-lllvf\il

B-l|.lvfw

B-16lvfw

B-Z)-lvflil

B-22-lvf\il

Interval

(feet)

x3-40,.6

36.0-,CI.0

615653

26J-n2

2L.U25.0

&.8452

41.H55

26J-3/J,3

26.0-30.0

76.V29.9

Material

Gravelly clayey saad

Sandy clayeygravel

Sandygravelwith day

Sandy cJay and gravel

Sandygravelwith day

Claycy sandygrarrcl

Grarclwith sand and clay

Claycygravelwith sand

Clayey sand with gravel

Clapysand with gravel

Permeabilitv(cn/sec)

15 r 10-5

3.9x 104

13x 104

32x 10-5

85x 10-5

6.9x 106

3.4x 104

13x 104

1.9 x 104

22xt04

the relationship of the perched water to the allwial lithotogies. The occurrence of these perched

saturated conditions is not cousidcred ts be signific'nt as the latcral ctrent of these conditions is

limited

Aquifer recharge takes place fron precipitatio4 seepage from ephemeral strcamg seep4ge from

ponds, rescrvoirq irrigation ditches and from spring. Since no pordE rcservoirs, or irrigation

ditches are located within the project area, precipitation events alone defne the quantity of water

available for recharge. Barneys Creek ruDning from Barneys Canyon is an ephemeral stream and

likely coaributes measurable quantilies of recharge water to the aquifer during spring snoumelt and

ntnoff Gvents atthough these events are short lived and the total anount of rccharge contributed by

surhce sccpage into the dlwiun appcars tobe linited-

Most of the groundwater rcclarge takes place in the higber ele\Etions of the Oquirrh Mountains

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

rapid percolation of snownelt and rain into the aquifer below. ltis recharge water floun dovm from

the motmtains and entcrs the rnalley fill underground. Therefore, grormdwater flowing beneath the

Barneys Canyon project area is nainty recharged fr66 highsl elerations while little rec,harge actually

takes plae in the project area

233 LocalAquier Cbaractccigi,cs

A total of 11 decp monitoring welts harre been installed at the Mel-Co and Barneys Canyon pit

areag the leach facility area, and nearby at the Utah Copper Concentrator. Table 233 lists these

holes and the depths to the water table. Contoruing the water clevation data from these holes

shows that the rnain watcr table surface subparallels the land suface at the Barncys Canlon projecr

site @grue z3it). From the proposed mine arean flow is generally eastc/ard toward the Jordan

River. The hydraulic gradient at the leac,h pad site is steep, at around 0.1 ft7ft, but decreases to

about O.Bff/ft under the 53ffi topographic coutour about one mile cast of the leach pads. Water

table deptbs vary from 600 feet at the Mel-Co Pit site to betwcen 140 to 350 feet below the ground

surface in the Barnqn Canyon Pit area. Watcr table deptbs in tbe leach pad area rangp from 145

to 160 feet below the ground surface (Damcs and Moorg 19gg).

Tbe main aquifer is composed of volcanic rocks consisting of andesitg latite porphyry, latite

tu$ and dacite. Aquifer tests fron wells near the Utah Copper Conceutrator tocated about 15

miles from the project site reveal aquifer permeabitities in the volcanic rocls 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 suggcst tbat thc bedrock aquifer in thc vicinity of thc lcacb facilities

is confiacd. Tbc Kcnnecon drill hole BC-!|8 enooultcrcd watcr druing driltirg ar a dcptb of 165

fceg immediatcly bcacath a c;lay-rich volcaaic ash bcd. Subsequent EeasurcEents 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 charaacristics of tbe

aquifer bclow the Baraeys Canyon facilities, all future mouitoring and watcr wells drillcd in thc arca

will bc ficld tcstcd n<ing pnrnp tesq packcr tests or slug tests.

The othcr lcach facility drill hole, BC-150, locatcd about 1 mile dowogradieut froo BC-148, also

cncouatcred a clay*ich ash zoae aborc thc watcr tablc, althougb tbc water tablc ia rhic tosiliss ig

beneath thc bottom of thc clay zoue. This clay zone Eay bc cquiralcnt to that c,ticl forEs the

aquitard i! Bc-l/E and may also act as an aquitard ir' this location.

REVTSED 7-20-8830

llF

o

ooLlxuld

u

ltF

o

NOTE -SEE TABLE C. I FOR W.ATER LEVELELEVATION G,ATA AND DATES OFM E A S U R E M E N T .

'/r.0//z(esv\=:1\\\ut\\\-//,__\\\\\))\\\\SCALE IN FEET

rooo o rooo 2o9o NNN\-/.tttt,

'//za?)lltlltt,l,tK\\\\\5tllltru(KA,R€FERENCE

A A ' S E M A P F R O M U . S . G . 5 . Q U A O R A ' N G L S S E N -T I T U D n B t N G H A M C A ' | , r y O N , U T A H n - 1 9 5 2 . ^ N OtL .ARK" UT^Hn - t952. go lx g reeTs f ,HoTo -RE\ / ISED t969 A.NO r975.

GROUND WATER LEVELELEVATION CONTOURS

Figure 2.3-15 1 \ r w L i l I

Dames & MooreS-

ol

\N*

Table 2$3 Watcr Tabtc Dcptbs in projcct Area

DrillHole

BC{5

BC{8

BC69

BC-?1

MC€r

BC-148

BC-150

BC-153

w-31

w-32

K-404

K-405

Surface El.(ft.)

66,23.t

6564.4

6?N.

63748

742-

6170.1

5368.

$a.

fi20.

5560.

Water Deoth(ft.)

356.7

2v2.

136,.6

751.6

595.9

r23.2

125.

1@.

140..

&7.

724.4

2:!96.

Warer El.(ft.)

6?6.4

6Tn.4

6143.4

6217.2

6826.7

M.9

5228.

5n6.

1495.6

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 progress and information will be providcd when available.

Thc Mel'Co Pit site is located along a topographic divide along &e southera border of Baraeys

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

II

\ ^-.

v32 REVISED 7-20-8

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 31'g gstimalcd 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"c Grouadratcr Ouality

Rcccut c,baractcrization of the grouadwatcr quality from wclls and springs uear thc Baracp

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

Canyon along the basc of tbe Oquirrb ldsusrainc, grouadwater qualiry has likety remaincd unaffectcd

by man's activities.

Water quality aaalpcs performcd on thc wclls at thc aew Utab C,opper Conccntrator (W-31 and

w'32-A), thrcc monitoring welts located 1 to 3 miles dormgradieat of the projcct site (p-225, p-n6,

and P'2788) and Barncp Spring (5'318), indicate that groundwatcr qualiry dow4gradicnt is gcocrally

good with tbe cxceptios sf high conccntrations of 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 samplcs tateu from aouitoriag

wclls BC ' 1tl8 aad BC ' 150 west 8.ud south of tbe lcach pad arca iadicatc grouodwatcr quality is

good. TDS ralues rangc from 825 to 9U rrgl. Ficld elccrrical conductivity mcasucmenrs ir thcse

wclls werc 1100 and tStQ *rnhss (see Appendix B). Watcr qnality analpes wcrc conductcd on

samplcs for Bancroft Spring, locatcd soutb of thc proposcd lcacb pads. Watcr quality in rhis spring

sc0c{ls many of the samc gcneral chemical conccntrations as was fonnd in the otbcr spring and

c/clls. Thc results of thi< anatysis may be found in Appendix B.

REVISED 7-20-8f,

Baseline grouadwater quality paranctcrs have aot bcco cxamined at tbe Mcl-Co Pit sitc. The

Deatcst locatioos from which water quality data has bccu inrrcstigatcd is L3 rnilcs d6**"dient of

thc pit in the Dry Fork Crccl &ainage basin (Figurc 23.1), sourheast of the Mel-Co pit site.

I! 196, conccatratioa lewls 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

aad Moore, 198s). A complete listiDg of tbese ralucs oaybe fouad in Appendix B.

?.4 Soils

?-4.1 Tcctsical epproach

A soil sun'ey was conducted in October-Novcmbcr, 198? at tbe Baroeys Caayou projcct site.

The SCS Soil Sun'ev of Salt Lalc Area. Utah was ucd as &c basis for tbc gronad suwey. Pits or

&esh road cuts wcrc rscd to obtain proElc descriptions and dc6ne thc actual soit boundaries on the

projcct sitc. Soil sanples c,crc obtaincd aad sent to a conncrcial laboratory for fcrtitity aaalyses.

v REVTSED 7-U-88

The averagc surface lapr and subsurface layer thicknesses were used to define potential naxinun

topsoil depths.

242 Soilrypcs

lto soils on the east slope of the Oquinh Ratge are derived from mixcd sedimcntary rocks or

the allwium and colluvium from mircd sedimentary roc,ks. The soils of the projcct area all lie above

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

are calcareous througbout with additional but variable, Iime acanmulation in the C horizons. The B

horizons arewell developed in the deeper soils of the lower slopes.

Plate IV presents the soil nap for the prqject area Five soil associations occur within the

projcct area" The Agassiz-Bradshaw Association is found on steep slopes in the Mel-Co pit area.

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

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

Barncys Canyon pit and dump areas. The Dry Crcek-Copperton Association is found on the lowcr

slopcs where the leach pads will be sited.

The frrll profile descriptions for tbe soil associations can be found in Appendix C-tr. Detailed

descriptions of each soil association are presented below.

Bradshaw-Agassiz Association

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 surface layer is very cobbly silt

loam' and the subsurface layer is also rrcry cobbly silt loam that is slightly calcareou. The

average topsoil depth is 12 inches but numerou rock outcrops wilt linit thc actual anount

salwged The SCS describes the potential for erosion gs high.

Bradshaw

The Bradshaw soils occur in association with Agassiz soils in thc Mcl-Co pit and dump area but

are usually found in concaw positions of the slopes over colluvium- the surface layer is very

cobbly silt loam as is the ligbter colored subsurface lalcr. The horizons are weakly dcrreloped.

The substratum is collwium developed from limqstone and quartzite. The average topsoil depth is

20 inche.s but some sites will contain topsoil to fl) inches or more. The potential for erosion is

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 vegetation is a spruce-fir forest with limited understory. Ite surface layers are dark

grayish-brovm gravelly loam and the subsurface layers are yellowish-brown gravelly silt

loam- The substratum is colluvium ald rcsiduum from mixed sedimentary rocla. The topsoil

depth averages 18 inches. The scS lists the potential for erosion 6s high for this soil t1pe.

36

Gaopmaver-Wallsbure Association

Gaoomaver

The Gappmayer soils are located on north-fac-irg slopes along the Mel-Co to Barneys haul road

route. The parent material is colluvium and residuum from mixed sedimentary rocts. The

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

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

erosion is moderate.

Walsbure

This soil occurs with the Gappmayer soits uually occupying the ridge tops and upper parts of

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

The surface lalcrs are very cobbly loam while the subsurface layers are very cobbly silty loam.

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

erosion is described as high by the SCS.

Drv Creek-Coooerton Association

Coooerton

The Copperton soils are fouod in association with the Dry Creck and Harkcr soils and occur on

nalro\il ridges and drainagcs that traverse the loqg allwial fans. The soils formed over alluvium

derived from mixed sedimentary roclc The surface layers are very gravelly and very cobbly

loan and the subsurfacc layers are rrcry cobbly fiae sandy loam characterized by lime

n

accumulations. The topsoil depth arrcrages 18 inches. The potential of erosion is moderate,

according to the SCS.

Drv Cteek

These soils are on the easterly slopes of high alluvial fans- in the Barney Canyon pit and dump

area aad in the leach pad sites. The surface layers are silt loam and the subsurface layers silty

clay loan to silty clay. A distinct lime accumulation oocurs bclow the subsurface la,,ers. The

topsoil deptb can be up to 40 inc,hes. The SCS reports that tbe erosion potential is modcrate.

Harker-Drv Geck Association

Harker

The Harkcr soils are in association with the Dry Creck and Copperton soils in the Barneys

Canyon pit and dump area and occur on the higher elevations of the fans and drainages. The

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

clay. Tte substratum is vety gravclly clay loam- fhe topsoil dcpth arcrages 40 inches. The

for erosion is described as moderate by the SCS.

Outcroos and Talus Slooes

these arsas on ridge-tops and on stecp sropcs 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 surrormding Harler soils. It would not be suitable for

u,se as topsoil because of the e,xtreme roc,kiness.

Z43TopsoilOuafty

All the soil materials are 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 above LA% x'hich is higber tbal that normatly found in f,esin asd Range soils.

Sufficient plant macronutrients of nitrateg calciuq potassium aad magnesium are present for plant

grouth- Phosphonrs is deficient as is rsually thc case in Basin and Range soils. This wi[ require

fertilization to correct the deficiency.

Laboratory reports for soil ferdtity and chenistry are prescnted in Appendix c-tr.

The eoil quality for each of tbe principal soil qpcs identified in the soil survey are described

below:

Bradshaw-Aeassiz Soils

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 moderate to low potential for nutrients. The

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

rrining operation"

Gaoomaver-Wallsbrug Soils

These soils are neutral and noderately fertile. The organic matter is about LSVo.T\e phosphates

are low. Some highcr-than-normal copper and sulfate levels are found in the surface horizons.

C.oooerton Soils

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 surface layer.

Harker-Drv Creck Soils

These soils are generally decper than othcr soils of the arca and will provide the bulk of the

topsoil material This is cspecially truc for the Harker soils rvtie;h are the deepest soils and

occllpy much of the distubed areas of the Barney Pit and dumps. The soil tetrure raries from

loan to clay loam with clan in the lovrcr B 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 levers in the sruface horizons was formd.

25 Vqrtatim

The Barnep Canyon area of the oquirrh Mountains ranges from an clevation ot g242 fcet at

Baraep Pcat to 5,100 fcct at state Highway 111 on the cast slopcs. Gcncrally all of the major

plant commuaities are nariants of thc oa&doninatcd mountain shrub plant The ganbel

oak (OuercuS. sambeliil occurs gs :rnnlt shrubs on the higher c4osed ridgpE as tall shrubs on srnnll

trccs on the protcctcd upp€r stopcg as medium shrubs at mid-slopcs, and as *nrlt shrugs in

scatterpd cl.mps on the rourcr alwiar, sagsbrush-dminatcd slopes.

The steep tcmain cmphasizes thc difrcrcnce in aorth and south aspects. Conifen and heavy

stands of sbnrbe charactcrize north aspects rvtile south and west aspects support pure oak stands

and curleaf nahogany (Ccrcocamus tedifolius) stalds on the rocky soils and outcrops. Sagebnrsh(Artemisia tridentata) atso edsts at all elerations aad in most of the plant commrmities but bccones

doninant only on the lower alluvial slopas and ridgc tops.

A vegetation conmunity map was dcvcloped for all thc arca affectcd by thc o|I,erall mining

project' This map is prcseotcd on Figurc 25-1. The arca was surrrcyed on thc gropnd and

comumity boundarics drawn onto topqgraphic naps. one hundred-foot, line-point transects werc

run in cach major plant conmrmity on the sites of proposcd mining activity.

The rregetatira napping arbitrarily established boundaries for the rlarious oak sbrub communitics

as dcscribed aborrc' In reality thcse communitics do aot harrc dcfinite boundaries but grade from

me community to the ner. Thug many connunity bormdaries or e,rtremities are charactcrizcd by

ccotoDes' AIso many subcomnunities or cscnsions of a-djaceat commrmities can exist within the

4l

k-///,vi

major com'nunities rsually due to terrain aberrations.

25J Oat Woodlaads/hfiourtain Brosh Cmmty

This plant ranges in eleratiou from 6800 feet to 8200 feet. It is characterized by

oak woodlands composcd of rrnnll trees on favorable sites but can be oak shrub stands on less

favorablc sitos. The opcn arcas bstwscn shnrb and trcc stands are rrcgetatcd with grasscs and smrll

sbnfts. ltc north slopc vcgctatiou can cxist within the general arca 8s snall stands in pockets or

as commrmities covering large steep aorth slopc ueas. grnnll stands of aspcns (beulus tremuloides)

occrr in thc dccper soils of stccp drainagcs or qfictp thc melting of snow ba*s keeps the soil

noist. Therockykuollsofshallonreoilareasmaybavestandsoforleafmabogany.

This comormityoovett dl the Mel-Co pit and dump site areas.

The rrcgetatirc corrr for this plant communityis summarized as folloq6:

Groud Correr, percent:

Bare soil 14, me,as 2.7

Rock $.6, mean 3.0

Litter $-48. mean 28.2

TotalNon-vegetatiw D49,me.an?43

Vegetative 51-?& mean65.?

Overstory 6[ mean3g3

Vegetatirc Cover, species ranked byperceat:

Ouercus sambeti

Aproowon soicatum

B alsamorhiza sacittata

(Gambel oak)

(blue-bunch wheaSrass)

@alsanroot)

43

20.0r

153

13J

oPoa Nevadensis

Chrvsothamnus viscidifl onrs

Mertensia sp.

Elrmus daucts

Bromus marcinatus

Rosa woodsii

Senecio sp.

Lathvnrs sp.

Penstemon ep.

Bromus tcctorum

Solidaso canadensis

rrnlcnowa forbs

(Nevada bluegrass)

(greco rabbitbrush)

(bluebells)

(blue ryegrass)

(mountainbrome)

(woods rose)

(Scnicio)

(wild sntectpea)

@enstcmon)

(goldenrod)

43

L:7

L7

LO

1.0

1.0

1.0

1.0

0:l

03

03

33

' docs not include sa! classified as oveEstory

Range Condition: Good

Productivitlr 24m lbs.

252 Shn$ Oa&tsig Sagrnmsh C@nudty

The uppcr and lourcr elevatioa limie for this coumunity are approximately 8800 feet and 5500

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

from the uPper oak commuaity by the lac.k of long steep slopes and a more rolling terrain. The

lower elevation bormdary oocurs along &e uppcr allwial slopes and is indisthct. The oak brush is

formd in large scattered stands and rarely reaches the brg sagebnrsb and grasses. The nortl slope

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

dccreases the oak is confiaed Eoro to north slopcs and drainages.

4

The Barncp C;anyon pit and dunp and the leach pad and proccss sites arc located within this

comnuity.

The rrcgetativc covcr for this plaot conmrmity is snnnarizod as fo[ou6:

Groud Cor€r, pcrceng

Bare soil

Rock

Litter

Total Non-Vegetatirrc

Vegetative

Overstory

Vegctatiw Cover, ranked by pcrcent:

Ouercrs eambelii

Artcmisia tridentata

Chnnsothamaus viscidiflonrs

Elvmus dauca

Pachvstina mwsinites

Balsanorhiza sagittata

Ac,hillea millefolium

Cercocamus ledifolius

Asroovron soicatum

Lcoidium oerfoliatum

Elvmu cinereus

Koeleria cristata

Bromus tectorum

Solidaqo canadensis

unknoum forbs

(Ganbel oat)

(brg sagc)

(gecn rabbitbrush)

(blue $cgrass) 33

(mountain lover) 23

(balsanroot) L0

@rros') L0

(orlcaf mormtain nahogany) 0J

(bluebune,h wheatgrass) 1.0

(pepperweed) 03

(Great Basin wildrye) 0:7

(prairie jrmegrass) 03

(cheatgrass) 03

(goldenrod) 03

LJ

45

5-8, aeant4.7

1-1t mcan 7.0

2&30. mean 25.0

*59,meat46J

4L-64.,mean533

None

8.0

LL:I

3J

Range Condition: Fair

Productivity 19mb6.

53 Big Sagcbrush Cb''-nin''rly

This connrmity occupics the alluvial slopes from about 5,650 feet to 5,1fl) feet in eleration

Ttis vcgetative oommrmity occuts latgely to tbe cast of thc project area; horercr, portions of this

community erCend into the oak bnrsh zonc aborr on the large flat alluvial ridgc tops. The oak and

a few maples are confined mostly to thc drainages and snall north slopcs 8s big sagebnrsh dominatcs

all thc other sites. ltis comnrmity originaly supported a good of percnnial grasses that

hare bccn largely replaced on the flat ridgp tops with winter u&eat fields.

This conmunity occurs at the eastera linit of the project area; however, the proposed project

aooess road crosses iL

The rrcgetative cover for this plant conmrmityis summarized as folloc,s:

Grormd Cover, percent:

Bare soil 69, mcan 23

Rock 0-g, mean 2.?

Litter tl-12. mean t5.o

TotalNon-Vegetatirc 21-30, mean 25.0

Vegetative Correr 7F7g,mean ?5.0

Orrerstory None

Vegetative Cover, ranked by perceut:

Artemisia tridentata

Koeleria ETistata

(big sage)

(prairie junegrass)

s

5L7

6.0

Chrsothamnus viscidif, onrs

Bromus tectorum

Lcoidium oerfolatum

Eriqeron sp.

Erieeron sp. (annual)

Sitanion hvsEh

Ambrosia osilostachva

Ouercrs eapbelii

Verbascum thaosrs

Asoovron soicatun

Hvmenoxn richardsonii

un&no*n forbs

Range Condition: Fair to Good

hoductivitlr 1500lbs

(gr.eeo rabbitbrush)

(cheagrass)

(pepperweed)

(fleabane)

(fleabane)

(squirreltail grass)

(western ragweed)

(canbel Oak)

(flannel mullein)

@luebunch

(snakevteed)

3.0

3.0

3.0

z7

OJ

OJ

OJ

03

03

03

03

L3

25.4 Nortt Soge/CoonhsSnrobs Car'rrnrmitt

This conmrmity is confilred to the steep slopas of the higher terrain rsually above 6,800 feet in

cleration; bowever, snatl coloaies may cxist at lowcr in select sites. The sites occupied

by thc north slope rcgetation are thc mone mesic 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 communitywhere large stands of conifers are oommo'-

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

n

The vcgetative corrcr for this plant communityis summarized as follows:

Ground Correr, perccDt:

Bare soil

Rock

Litter

Total Non-Vegetative

Vegetative Corrcr

Vegetative Cover, rantcd by pcrceat

1

5

!6.

2,

78

Ceanothus \rclutiils

Pachrntina mvrsinites

Svmohoricamos qp.

Mahonia rcoens

Cercocarons montanus

Carex sp.

rnknoqm forbs

Ovcrstory

Abies lasiocama

Prunus virsiniana

Cercocamus ledifolius

RangeCondition: Good

Productivitlr 2300lbs

(buckbrush) 60

(mountain lovor) 7

(soovberry) 5

(Orcgon gape) 3

@irc.hleafmountainnahogary) 1

(sedge) 1

1

(subalpine fir)

(chokcclerry)

(arleaf mountain nahogany)

37

32

4

255 RiparianC@'''lrr'"t

The riparian comrnunity varies greatly dcpcnding upon the size of the drainage in which it

oosurs and elerration- Generally, riparian stands have trees and shrubs that grow in deuse stands

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 segmeot within Barneys C;anyon will pass throryh a large riparian

community.

Thc riparian comnuity adjaceat to the chanel in Barneys Canpn is doninated by large stands

of maple (Acrlt sandidentatum) with scattered birches (@lt occidentalis), spon fpooulus

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

undcrstory is conprised of nettles furtica g&I and pcrcnniat grassos. Thc overstory rmries from ?&

100 percent oovcr. Tte rmdcrstory rangcs &om G,35 pcrcant oovcr as the result of sbading and

acsrmulation of leaf litter.

Thc rango conditioa is considered good howe'er productivity.is'nknown

2.6 f,iitdtift

The oquirrh Range supports a large mule dccr herd and an elk herd. The elt generally sunmcr

at the upper clerations in the north slope conifer forcsts and in the upper reachcs of the oak bnrsh

zone' The deer utilize all of thc oak brush zone and the higher elernrtions for summer range. Deer

winter range is the mid'oat zone doum into the lower sagebnrsh zoDs on the alluvial fans. Elk

winter generally at higber elenations than deer but do occasionally resort to wintering ia the wheat

fields at the edge of 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

oUtah Division of Wildlife Resources).

The deer density is about 0.17 deer per acre q 6 acres per deer. Othcr commoa rnernmrls is 1f,s

aroa are coyote.s,lagomorp\ badgerg skunes and the less common bobcat.

Raptors use the Oquirrh RaDge for aesting siteg summcr fe€ding areas on the upper slopes and

sintcr fecding areas along the lower slopes. Golden cagles nest 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

hawks nest in 1f,s cliffs and large trces in thc canyong as does the great-horned owl Harriers are

common year-around in nct of thc habitats. A fall sureey following leaf fall did not rcveal any

raptor nests within the spccific proposcd disturbcd areas of thc project

Barnep Canyon and tributary streams support 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 necessary support 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 access road from State Highway 48, and thecmployee parkiag lot will be located at the administration building. Enployees working at thetruck shop, $e mins pis, the cnshing plan! leaching facilities and process plant will betransported to these locations in crew-transpsrt minlguses.

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 andMel-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) toperhaps 4{D feet of owrburden. Maximum pit depth is planned to be approximately ?50 feet. Thegeneral geonetry of the ore deposit is shown io plao and in cross section in Figrre A-I-1 which isfound in Appendix A (CONFIDEI{"flAL). The Mel-Co deposit is a near-r,ertically dipping ore depositthat is somewhat elongate io plaq as Figure A-I-2 in Appendix A (CONFIDENTIAL) shoun. TheMel-Co ore body is e':rposed at the surface; however, removal of owrburden above and adjacent tothe 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 theMel-Co pit. The locations of these pits are shoum on Plates I and III. The Barneys C.anyon pit willbe 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 ofthe Barneys Canyon pit, occurs near the headwaters of &c right fork of the Dry Fork Creek1ft'ainege, a tributary ts f,inghap Canyon. ThE Mel-Co pit site is on a south-facing slope at an

average elevation of 7,{69 ;"",.

321 Irrfiningapcmtims

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

Work to date at the mine sites has consistcd of oploration drilling, construction, 6ad mining oforarburden and ore at Barneys Canyon. rnitial overburden removal began in February, 1989. Priorto commencement of mining activities, thc topeoil at each pit has been and will be removed andplaced 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 crusher6d rnins waste dumpg respectively. The blast hole drilling prqgram will serve the additionalpurpose of providiag sanples for analpis for grade control. the gold analyses will be performed atthe 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 andwaste 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/fueloil (Al'I/Fo) will be the primary explosivc agent and will be supplied to the blast areas in bagged orbulk form by truck.

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

52 REVTSED 9-29-89

oto the crusher from the Barneys Canyon pit will be approximately 135 miles. - Run of mins s1s frs6the 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 maximumwaste production will take place in the second year 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 haultrucks 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 (platem). Average waste hauling distances for the Barnep Canyon and Mel-Co waste rock wi[ beapproximately 1.0 mile and 0.2 mile, respectively.

Fugitiw dust emissions on haul roads will be supprcssed by application of water by a 350-horsepower, 8,000 gallon water truc,k cquipped with six spra),s. The water truck will operate asrequircd for drst coutrol.

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

Other operations that will talc place as part of rnining include grading of road surfaces by 150horsepower motor graders and general horsekeeping and materials handling functions. In addition toinitial construction of haul roadg on-going construction of drill pads and haul roads wiu take placcthroughout 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 minirnsp27-foot width will be left every 60 feet. Mediatr bench face n,,gtcs are e:rpected to be 25 and T6degrees for the Barneys and Mel-Co pits, respectively. A maximum interramp or overall pit slopeangle of 47 degrees rqsults from this configuration is shown on Figures 32-t arrd32-L

53 REVTSED 9-29-89

t,tt, Hl$tffi'm"Lllf 'l-*-;E

lcrr \--r. rgrncb lecr Aqh

C Zoar

: l ' ' ;t . - 1! .-,

'-:;r 1f-:'.. lGl-l= trrl: 't

..r', O; . . )'::r (t:.' ilt' i r

Ic:. -- rli : i

::-l

,=t

l ' . ' - . ,

/

HRffiLH.#T i?i:

, .

t ,, rnfrfor Barneys Canyon HighwalL sector.

iJ)

l J

oFigure 9-5: DesLgn Bench Configuratlon

s $ii$'i:il*l:i"Ll:f, 'l*"*EEBench pecc Anglc

t Zoaa

f r60 '

I; -l ,:.: -f -d--

nr 'llE ; E

_(o,2. C= : -C' oi:;:; Gll=l iur '- r;*' N.? t ; ,e ' ! '

:-j

=L:-

:()]t '

HR8ffii,.{i:ifiii ?i,,n

Figure 9-4 : Des i6n Bench conf igura t ion fo r Me l -co .

The interramp slope design at the Barnep Canpn pit wiU range from 38 degrees to 47 degrees; theMel-Co pit is designed at a uniform 47 degree interranp angle. Present surface topography andultimate 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 thisanal)'sis, the safety benches described aborre, combined with safety berms, were designed for controlof rockfalls. The bsnches will be constructed with berms located Tl feet from the bench face toprovide a 14 foot wide impact zone. The berms will be 5 feet high, 13 feet widc at the base andhave slopes of 13 to 1.

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

33 Croshing Scrccring, Conseying aDd Stoctgiling

The crushing plant receives run-of-mine ore and delivers crushe4 agglomerated ore forconstructing heaps. The crushing operation is depicted on the flow diagram in Figure 3-11. Thelimia of the cnrshing plant etrend from the stockpile to the heaps constructed by the radialstacker. Fifty-five-ton ore haulage trucks trsnsport ors to a stoclpile located a-djacent to theprinary sprshing plant. A rock breaker is used to break oversized rocks. ore is reclaimed from thestockpile by a Caterpillar 9888 front-end loadcr and placed in a 35-ton crusher fecd hopper whichdischarges to a vibrating grlzz:ly feeder.

GtizJy oversize @ar separation is 6ve inches) fals througb an enclosed chute directly into a42-inch x 48-inch prinary jaw cnrsher. In the pringa'-y crusher cavity, ore up to three feet in sizeis crnshed to ninus nine inches. Grirzily undersize is aiiscnargcd through an encloscd chute onto atl&inch x 232-foot belt conveyor le6rling to the secondary cnrshing plant. Size reduction in theprimary jaw cruher oocurs at a four-inch closed-side sening. Jaw crusher and grizzly rmdersize

56 REVTSED 9-29-89

tr,tnl\lor-

Il,utolo

lgwGIN

tt tg,\

lrJu,GI6@

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prducts are conbined and transported via a 48-inch oonvcyor to an eigbt-foot x 2Gfoot double-deck vibrati'g screen Capacity of the crushiqg facility is 650 &y sbort tons per hour. oversizefrom both Ecreien declG is conveyed by a serias of 36inch coaveyors to a five-and-one-balf-footstandard cone crusher which is operated in closed circuit with the scrscn to producc minus one-andone-half-inch product.

Ccmeat &om a 15&ton capacity silo is dumped at a controllcd nominal ratc of around tsnpounds p€r toB to the minus-one-and-oue-half-inch screen undersize product. Tte combined ore-ccment Eirlue is transportcd via a conveyor to the fiw 36inch x ZL,foot agglomeration oonveyors"watcr is added by spraln on the fir,c conrclors to produce an agglomeration product suitable forheap coustruction" Agglomcratioa is a technique that conobines the water and fine cerncnt wi& theorc to facilitate inprorrcd leaching and gold csraction" The moistue content of tbc agElomeratcdore is controlled to approximatcly 10 to 12 percent. The agglomerated ore is transferred from thecrushing plant to the upper cdgc of &e teach pad area via interconnecting 36inch overlandconveyor belts. The last overland oonveyor discharyes ooto the first of a series of 28 portable 10sfoot-long @nveyors for subsequent feed to a 100''foot radial arm stacker via the transfer conwyorand a shuttle type stacker feed conveyor. The stac&cr progressively retreats up the leach pad tospread ag9omerated ore evcnly on top of the overliner blanket or previors lift. Clanide solution isspraycd on the ore to initiate the lcaching of gold.

Initial plans call for the crushed and agglomerated ore to be stacked in threc lifts of 17 twteach to a total heigbt of 51 feet. The specified lift hcigbt Eay be inceased or decreased in thefuture depending on metallurgical results. The maximum ore heap height is linited to l25 feet.

To ensure heap stability, ." or*iro [fts arc stacked, thc toe of each new lift is set back apre-detcrmined distance from the crest of the prior lift around the fuIl periphery of tbc pad.

Watcr spra'6 at conveyor transfcr points are patt of the dust suprassion system that controlsboth moisture content and air quality.

3.4 Irachiqg

Ore will be transferred from the aushing arca to the leach pads in a serias of fixed overlandoonveyors' Thc rarlial stacker will stack the ore into l7-foot-high lifts on the previously preparedleac'h pads. The ore will then be sprinkled with 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/D on 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 forpad foundations

Leach Pad Foundations

Each pad will first be graded to produce a firm foundation. Grading wiU be preceded byvegetation and topsoil removal. The topsoil wil be placed in stockpiles for frrtrue use inreclamation of the facilities. The pad foundations will be built with cut and fill techniques wherethe 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 withmoisture 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 andless 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 sndBeclnilith (1988) indicate that the heaps will be stable. fte detailed grade of the pad surfaces willtypically accomnodate the topography through the use of long terraces which themselves have slopesalong their long and short .linensions for drainage of solutions (Figure 3.+3). The fi'ral foundationgrade forms a sub'base with a permeability of less rhaa s;. equal to 1 x 10-6 cm/sec upon which aleak detection slatem is placed"

63 REVISED 9-29-89

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At the doqmhil margins of the pads, the pad surface will terminate in a solution collectiontrench that is ll-feet wide at the crest and 2 feet deep. Outside of the trend there will be apcrimeter berm that is 2-feet high v,,ith an 8-foot wide toe (Section d Figure 3.+3). The bottomcorner of each leach pad cell will be equipped with a leachate collEction pipe erending through theperimeter bern @etail 6, Figure 3.U). This pipe will be made of welded HDPE and will tnnsportthe collected solutions to the leach pads.

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)4stem is to alert operations personnel tosolution losses thro'gh the HDPE and clay liners. T:pical cross sections of the pad lining and leakdetection system are shown on Figure 3.43.

Irak detection under all areas of the pad is accomplished by monitoring the presence of anysolution 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 atthe side of the pad- The leak detection pipes are factory-miilsd with 0.66_inch-wide slots placed ontl0-foot centers. .d rninimsn slope of one perccnt is maintained on the leak detection pipes. Eachsix-inch HDPE collection pipc at the margin of the leach pads is joined to the non-perforated endof the leak detection pipe by a polyehtylene snap adapter. The other end of the non-perforatedleak detection pipe is joined by a pipe sleeve to its perforated equivalent that rests on thc leakdetection layer.

Leach Pad Liners

The secondary earth liner will be placed on top of the lea& detection system. This will be afine-grained clay soil borrowed from &e property near the leach pads. It will be spread in layersthat when compacted will be approximately 6 inches thid conditioned with water and compacted to95Vo of $e 6315fuarrm dry density as determined under ASTM-D698 (see Appendix E). Two layers willbe placed for a total compacted thiclness of 1 foot. The permeability of this compacted soil liner isexpected to be 1.0 x 10-7 cm/sec whicb combined with the design thickness, will assure that anyEeePage thtough the primary platic liner will be essentially stopped by the secondary liner. Thisliner will be erended to the perimeter berms as shown on Figures 3.4-3.

67 REVTSED 9-29-89

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BP }iINERALS ATIERICAAAR'|EYS CAIi]TOAI FFIO'ECT

adl-Coda t,ti

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2.o2 .?pr )

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, oroverliner, 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 toan eight-inch-dianeter polyethylene collection main which will run downslope to the discharge endof each cell. The blanket will be minus 3/4_inch cnrshed ore, produced at the plant crushingfacility, which will be trucked or conveyed to the pad and spread to a thickness of approximately 3feet. The overliner will function as a protective cushion separaring the primary plastic liner fromthe overlying ore. The crushed and agglsmssated ore 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 solutioncollection tre'nches along the margins of the pads to the low points of each cell where the solutionswill be routed into HDPE pregnant solution pipes. The pregmnt and barren solution pipes will havesecondary 5pn[ainmsal a lined ditch which flows toward the process solution ponds. pregnant

solutions entering the ponds will be routed through measuring flumes that will record the flow rates.

The collection trenches will be HDPE lined ditches from the pads to the solution ponds tocollEct any leaks of solutions from the pipes, as shown on Figure 3.zt-4. These collection trencheswill 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,hes back 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 oneach cell' a network of six-inch PVC branch lines, and a network of three-inch spray PVC linesspaced 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 orstalliry. Since it has a single moving part, the Wobbler also resists wear.

The spray heads operate between 15 aad 25 ponds per square inch and provide a solutionappilcation rate of .0025 to .gg+ gallons per minuts per square foot of pad area. yelomine SDR-21PVC is enployed rrring spline connections. The piping s),stem will be inspected daily by the leaching

crew. The Wobblers require occasional un-blocki"g of orifices. The leaching crew will survey thespray pattern and note non-performing sprinklers. After shutting docm the fsgdlineE the sprinklerwill be unplugged or replaced. The sprinkler system will be restarted after maintenance iscompleted.

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 pressuresensors which will irnrnsdhtgty and automatically shut down the pump should there be a break in thepipeline.

3.43 SohrrionPords

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

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

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

1)

2)

77 REVISED 9-29-89

ponds at the prevailing barren solution pumpng rate to the heaps. For cxample, at apumpiry rate of 2000 gpm, the calculated vol,mc would be 2"880,000 gallons.

The volume of runoff from the exposed, lined pad and trench areas that occurs during thelCI-n 24-hour precipitation event. Thrs is based upon 3.5 inches of rain. This runoff will

be a variable and will equal 218,200 gallons for each 100,000 square feet of bare plastic. .

The runoff from the leach pads. Due to the water storage capacrty of the heaps, it is655rrrns4l that 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 squarefeet under active leach.

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

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

The combined capacity of the barren and pregnant solution ponds is available for the draindown and51636 inflsws. The total capacity of the process solution ponds is 10,285p00 gallons.

The ponds will -have 3h: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 at2'0Vo, 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 linermaterial material will then bc applied in nro 6inch compacted lifts (Figure 3.+6). Thepermeability, material t1pe, and placement techniques for this liner material will be identical tothose described for the leach pads in Section 3.4.1. A geote*ile followed by a drainage g:ldmaterial will then be placed on the secondary liner (Figure 3.+6). The primary liner of 60 DdlHDPE will then be placed on top of &e drainage grid and anchored in trenches along the margin ofthe ponds (Figure 3.+6).

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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

socpage. pight-inch rlinmetff standpipes will be used to monitor the leak detection sumps forleakage (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 onPlate 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 thepregDant solution ponds will be pumped to carbon columns, each filled with granulated" activatedcarbon, and locatcd in the process building. The gold-ganide complex will be adsorbed on thecarbon as the prepant solution passes through the columns. The solution coning from the carbonsslrrmns is the barren solution and will be refortified with solutions of NaOH and NaCN and recycledto the barren solution pond. The barren solution will then be pumped back to the heaps tocomplete the leach cycle. Fresh water as needed will be added to the barren ponds to make up forevaporative losses 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 tothe carbon processing plant. The carbon will be pumped to an acid wash tank whcre the loadedcarbon will be treated with a 57o solution of hydrochtoric acid (HCl) to remove any minsla[ scaltbuild-up Ftgute 3.5-2). Acid soluble metals will also be washed from the carbon i1 this s1sp. Theacid wash solution will be neutralized in the acid wash tank by reaction with the natural carbonateminslxl5 on the carbon The metals that were dissolved from the carbon will therefore beprecipitated 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 wastesump, the sludge will be pr'-ped to the active barren pond where the sludge will bo mixed andpumped to the heap. If the acid is not adequately neutralized in the acid wash tank, washed carbon

75 REVTSED 9-29-89

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in the tank will be treated with a NaoH solution to elevate the pH prior to pumping the washedcarbon 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 atatmospheric pressnre and a temperature of 190h. The stripping will be conducted in 2 banks of 2closed, strip tanks, each bank connected in closed circuit with a strip solution tan\ strip solutionheater and electrowinning cell Figure 3.5-2. Approximately 40 GPM of strip solution will becirculated 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 procasscalled electrowindng (Ftgute 3S-Z).

35.4 CarbonRqencratim

Stripped carbon will be pumped from the carbon strip tenks back to the carbon gslurnns (F gute3S-2), Continued reuse of the carbon results in a degradation of its adsorption quality so thecarbon will be occasionally reactivated (F gure 35-3). The carbon will first be washed with waterto remove any cyanide and then reactivated in a 1,500,00GBTUIHR, propane-fired kjlo by heating toa temPerature of 1200oF in an oxygen deficient atmosphere. The reactivated carbon will then bequenched i161ank of water and pumped bac& to the carbon adsorption sslrrmns.

355 GoldRefining

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

78 REVISED 9-29-89

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3.6 ArcillaryFacilities

Aocillary or support facilities for the Barneys Canyon Project will consirt of an analyticallaboratory, a truck shop and warehouse, erplosives storage, fuel storage facilities, parking areas, and3i lrlminisf;ation building. The locations of most of these facilities are shown on Plate III. Thetotal 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 atomicadsorption 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 fuelstorage facilities will be sited as appropriate for efficient operations. Fuel spill control Eeasuresissluding safety berms will be installed at each fuel storage site. A Spill prevention Control andCountermeasures Plan (SPCC) has been prepared and implemented as required by Federal law. Theadministlstiea luilding will house offrces for management personnel. Parking lots for employees willbe located at the xdminis6sfiea [uilding. Parking for company-owned eqrripment and man-carryingrahicles will be provided adjacent to the truck shop, process luilrling 6sd sdninistration building.

3.7 WasteDftpcal

Waste materials generated by the activities at the Barneys Canyon Project will consist of minewaste rock, spent ore on the leach pads, and trash. Mine waste rock will be disposed in the wastedumps, as described in Section 3.2. Spent ore will be reclaimed in place. Trash will be hauled to anearby, permitted municipal laDdfill. Waste solutions from the labs and process buildings will behandled in the process s)4stem in accordance with BWPC permits.

3.8 ProductionscLeduls

Waste rock removal began in the Barneys Canyon pit in the first quarter of 1989 and in theMel-Co pit in late 1989. Nearly J milliea tons of ore and waste will fs minsd from Barnep Canyonin 1989 and about QJ rnilliql tons of waste will be pre-stripped frorn Mel-Co in 1989. Barneyscanyon and Mel-co pits will be mined concurrently in 19g9 and 1990, by which rime ths fust phaseof Mel-Co will be minsd 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 willoourmerce and Barneys Canyon and Mel-Co pits will !e minsd concurrently thtough 1994, 1995, and1996.

80 REVISED 9-29.89

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

39 TopsoilUanagenent

Available topsoil naterials at the Barneys Canyon mining site will be stripped with dozers andscrapers placed in storage piles on sites protected from excessive surface runoff. Plannecl topsoilstockpile sites are shown on Plate III. The topsoil portion of &e soil profile, gsnsisting, onaverage' of the upper 12 inches, will be salvaged. In areas underlain by Copperton soils no morethan ftg upper 12 inches of topsoil will be salvaged. The Soil Conservation Servicc has determinedthat these soils are less thap ideal for use as topsoil. Facility sites having Copperton soils includeall the leach pads, the solution pon&, process building; substation, lclminisftnties building, srushingand screening are4 the eastern 3.8 acres of the shop building area, and the eastern L6 aqe,s of theore stockpile area. All other facilities are covered with Harkers-Dry Creek associatioq Dry Creek-Copperton association or Bradwhaw-Agassiz association soils which the SCS recognizes as suitable foruse as topsoil. For these soil tlpes, borrow deptbs may exceed 12 inches to meet topsoil yslrrmsneeds, if necessary.

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

In the Mel-Co atea, total available toposoil e:rceeds the anticipated topsoil demand forrecl'-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 recoveredand 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 gxpanslon will be vegetated with the interim seed mir

82 REVISED 9-29-89

Table 3.9-1 Topsoil Yields

Site

"T": canyon Pit

Barneys Canyon Dumps

Mel-Co Pit

Mel-Co Dumps

Admin. Bldg., Process/Lab &Solution Ponds, GraveVClayPits 1& 2

ClayPits2&Alternate

Potable Water Storage,Ore Stockpile

East Portion Crushing/Screeningand Shop

Pad BC-4

Substation

Total

Soil TVoes

Harker-Dry Creek

Rocky Variant

Harker-Dry Creek

Bradshaw-Agassis

Bradsha*Agassis

Dry Crcc&€opperton

Harkcr-Dry Creek

Harker-Dry Creek

Harker-Dry Creek

AverageSalvage SalvageableDepth ,Acreaee

11 523

0n 4.1

125.6

35.2

42.4

24.7

2.0

6.9

r0.7

Vohrme(Cu. Yds.)

u3n

0

?n46F.s

56,789(1)

68,,105(1)

t2n

IT

L2'

LT

t7

West Portion Crushing/Sg1'ssningand Shop Dry Creek-Copperton 12n g.g

I*ach Pads BC-1,2,3; M-l,2;Future l-each Pad and North &South Portions of BC-4 Dry Creek-Copperton l2n 215.6

f,s6aining Portion of l*ach

39,U9

3,m

Ll,l32

17,?63

14,197

y7,835

m,167

g5

866,521(1)

Copperton LT 725

Dry Creek-Copperton 72' 0.4

54L.2

(1) Actual topsoil borrowed in the Met-Co area is estimated to be 97,353 cubic yards; therefore, atotal of 100,000 cubic yards of material, sufficient to cover the surfaces to be topsoiled,-asdescribed 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 overburden will be hauled to the mine ch,mps shown 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 outslopes will 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 discussed below in Section 3.11.

Dump slope stability analyses have been performed by Sergent, Hauskins & Bechpith for the the

large Mel-Cs drrmp and the Barnep Canyon 6300 and 6JQQ rnine 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:rnges of factors of safety (F.S.) under static conditions:

Barnep Canyon Dumps

Mel-Co dump

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

F.S. : 1.05 to 133

F.S. = 1.1to 1.4

84 REVTSED 9-29-89

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 separately submitted.

3.11 Evaluation of lvlafcrials Tuicity

In order to respond to the Division's rule regarding identification 6a61 [gndling of toxic

materials, analyses of 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 analyznd for total

metals and EP toxic metals.

85 REVISED 9.29-89

This page is intentionally lsft Uank.

REVISED 9.29-89

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'<c tcst for minc-relatcd material. lv{iaing of the Mcl-Co dcposit

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,:rpresscd as 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) Dcccssary to 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 composite waste rock samples yiclded the fotlowing rcsults:

Samole

Baraep Canyon (BC-85,

compositc)

Mcl-Co (MC-25, f, to

255'compositc)

Mcl-Co (MC-25,3?5'

to 570' composite)

lEt

8.9

8.6

63 .f T/10007

4Tl10007

Acid-Basc Potential

+556 T/10007

Thc full laboratory rcPort is arailable in Appcndix C-Itr. Thc anatytical laboratory 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 waste samplcs. Thc samplcs selcctcd for analysis rrcre

from &ill holes coataining botb oxide and snlfidc oatcriats and wcre sclcctcd as rcprcscntativc of

zones of mixed ore and wastc that wiU bc eacountcrcd drrring mining of tbc orc body. Most of thc

ore body 6ssfainc only oxide orc and waste. The cstimated total quantity of sulfide-bearing ore and

waste in tbe Mcl'Co pit is 65,000 tons; the snlfids orc fractioo is estimatcd at approximatcly

300,000 tons. Total wastc for Mcl-Co is 14,000,000 toas; thcrcfore, tle total sulfide-bcaring material

comprises only 45 Perccnt of the 1e1st rrring wastc to be rcmowd from the Mel-Co pit. The mine

dumps wi[' thc!' contair a like proportioa of s,rrlfidg waste. Therefore, tbc dumps will not gcncrate

acid solutioDs as a rcsult of pcrcolaring rain watcr. The abscucc of low pH waters in the duops

will grcatly rcducc the potential for rlisolution and melilizalisa of most potcntieny toxic metals,

sincc these metals arc solublc at low pH's.

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

88 REVISED 7-20-88

to

Pyrite in qrranliligs 5rrffisigs1 to gercrate sipificaar acid will be rcadily ideatifiabte by visual

DcaDs' In additioA as patt of gold assaying fel rning ore gradc coutro! 1f,e rnin6 aralyticat

laboratory will dctcrmine aot oaly gold content but also cficther or lot the orc aad adjaccat rods

arc sulfide beatilg or oxidized. Tbc laboratory aaalpis wiu bc pcrforocd on dccly spaccd btast

holcs' ff,s rning gcotogist or othcr pcrson rcsponsible for orc gradc coatrot in thc pit will bc

responsiblc for dclincating aad marking tbc pyritic waste rock in thc pit througbour the life of tbe

niae. Dudlg ovcrburden remora! ppite-bcariry waste will bc identificd botb from the blast hole

alalyttcal rcsuls aad by visual mcals, martced with 0ags and loadcd in separate trucls for hautagc

to the wastc dump cfierc it wi[ bc dumped such that aoa-sulfitic wastc cal hter corer it. If

Dcccssary at thc cnd of iaslath6ss of a dump, nou-sul6tic wastc rcck wi[ bc stoctpilcd oa the top

of the dump for usc as 6nal cover material for sulfidc-bearing roc,k. Thc thickness o; sss-snr6dc.

bcaring waste rock coracr will bc ao less rhan t\ps fssl

The Mcl-Co ore body s6arain< idcatificd zones of sulfidi ninglalizatios as shown oD cross

Scctions A-I'3 - 5 which are includcd Appcndix A-I, the Confidentiat Appcndir Somc of the

sulfide'bcaring material oocurs in isolatcd and incgular pods wirhin in rhe niddle aad uppcr parts of

thc ore body. The reviscd rnining plan for the Mel-Co deposit has rcsulted in a larger pit tha', had

originally bceu coutcnplatcd. As a result, a discretc sulfidc zoue at the base of tbe orc body and

acar tbe pit bonom wiU bc rcnovcd. Thc sulfide-bcaring waste in the uppcr portioos of thc pit

*ill' by virtuc of ia irrcgutarity, be nixcd with non-sutfitic waste duriDg ovcrburdcn rcmoral aad

d-pto$ &erefore, Do conceDtratioos of sulfide waste will be deposited in thc druep from thesc

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

docs not lcnd itsclf to bcap t6ching and will not be rnins4t with tbc oxide orc. It is cnrrcntly

trGnnecott's intcation ts ming the ore fraction of rhi< material and haul it to its Magna smelter

rvtcrc, bccause of its high silica contcnt, it wiU be rscd as flu and the sentrins4t gold will bc

recowred. The uscftrloess of rhiq sulfids ore as a 0ux caDnot be dctcrnincd rrntil gs rnining

89 REVISED 7-2&88

oPcrations cryosc the matcrial. If this matcrial carnot bc uscd as sneltcr llu:g current plans call

for it to be disposcd in thc .ios drnnps along with tbe sulfidc-bcaring wastc rock This material

wiu be duped such tbat it is covcrcd by aad mixcd with oxide waste.

lbc rcsuls of the total mctals aad EP toxic mctals aaalpx for orc and waste are prcscntcd in

Tablcs 3.11-1 and 3.L1-\ rcspectivcly.

Total metal conteats of variors orc and wastc samplcs arc clewcd above aormal background as

thc rcsult of aatual bydrotbcrmal proc*scs that formed the gold ore bodies.

The results of &e EP toxicity aaalyses on unlcached and le,ached orc are compared to US. EPA

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

or cvc! approach t[s li'nits for EP toxicity sct by the EPA. Hcacc, ore stockpiles aad spent lcach

Baracp

. (BGal)

Mel-Co

o{c-36)

Mcl-Co

fMc-38)

Mcan

u.4L 7g

L2n10 l : }

1

2

90

3g _s. -s-3{t rm 58

REVISED 7-20.88

I f"Ufe 3.11'1 Rcsults of Total Mctals and EP Toxicity Analyses For Baraep Canpa Project Orc

Samples(ia ppn)

Sanplc Tlpe and

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

Untrcatcd Ore (Iotal)

4300 <10 860 <05 4 33 45 % 1.0 A 16 fl 9 90 103

3800 <10 3120 <05 t L2 37 10 1.7 4 57 180

aq <10 2550 <05

Dn <10 2180 <05

11 tE t5

1939m

Tabls 3'11-1 Rcsults of Total Mctats aad EP Toxicity Analpes For Barncp caayon project ore

Sanples(in ppn) (Coatinucd)

Sample Tlpe and

Dcsinoation As Sb Ba & Cd Cr Or !L He _l$. Se Aq _I9. Jt Zn

Irrchcd Ore (fotal)

Baracys

(Bc-[}1)

Mcl-Co

0{ca6)

EaracyV

Mel-Co

uno 2 LAm <02 2 35 52 56 NA 29 0.9 r.4 r.1 80 165

3900 10 3500 <02 <05 16 U n NA 14 23 03 5.6190 A

C-omoosite 50

Mean 1250

I-cacled Orc (EP Toxicity)

!58

tt7

2

5

os _q?. _L . 5{. tZ 50. NA 28 gg. !t gg.?0.

t670 35 41 $ U 13 1.0 2j u5

g{ PbSL Hs -Ss. AcI

Desienation

Ba-elr

(Bc-a1)

Mcl-Co

(l"tC-36)

BarneyV

Mel-Co

Comoosite

Mcan

EP Toxicity

Iimis (EPA)

As -&

0.t:}

0.01:}

0.m4

0.04

<.01 <.005

<.01 <.01 <.01 <.01

<.005 .0@ <.m4 <.01

2-4 J3.

13

-!9. <.005 .0040 <.004 <.01

.m2t

5.0 5.01.0

90.1

02

REVTSED 7-20-88

to

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 n30 <10 ST3 <0-5 Z 3t U t2g 0.4 ZB <4 g - 60 94

EP Toxicity

Desienation

Baraeys

(Bc-8t

Mcl-Co

(MC-25

t-95')

(lvlC-25

375')

Mcan

EP Toxicity

I inrils (EPA)

<.05 <.05 <.05

1.0 5.0

REVISED 7-20-88

As -&.

0.11 0.4 <.05 <.05 <.05 .0001

gL -Se.is-lb. Ascd

130.07

0.08 <.05

.0001 <.05 <.05

1.86

0.68

<.05

<05

<.05

<05

<.05

<05

.0023

.m08

0.1

0.6

<.05 <.05

<05 <0.5

5.05.0 100.0 1.0

90.2

5.0 02

I'o

I'o

Eaterials in the heaps arc rrot aaticipated to provide a sourcc of soluble Drctals to the cnviroDgrent.

Tbc rcsults of EP toxicity analyscs on Barneys Canyon and Mel-Co wastc rod aloqg with EpA Ep

todcity limits arc prcscnted ia Table 3.11-2. As in the case of thc orc sanples, thc rcsults of tbese

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

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

Dot substsltidly lower the pH of water pcrcolating througb thcn, the pH 55 conditions sinnlatcd in thc

EP todcity tcst should not be approached 8t the sitc. Ttcrcforc, evcn the lcrc,ls of metals rcportcd out

of tbe EP toxicity tcsts Eay lot be reached in watcrs percolaring throryb gg rnins dpnps.

90.3 REVTSED 7-20-88

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 SoilConservation Service (SCS) Curve frf'mles technigue, utilizing a conputer program developed byHawkins aad Marshall (1980). Precipitation depths for the 10-year, 2S-year and 100-year, 2ahourrainfall events were used in the calculations to determine the nrnoff peals and volumes for eachevenl The precipitation depths were obtained from the National Oceanic and AtmosphericAdministration Precipitation Frequency Atlas for Utah (LgR). The precipitation depths for theseevents were found to be 2.7 inches, 3.0 inchcs, and 3.7 incheg respectively. Runoff pcaks weregenerated usi4g the SCS $pe II rainfall distribution which is gpical for the westerD United States.

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

Vegetation tlpe

Sagebrush (fair)

Oak/Aspen (fair)

Source: Van Havern, 1986

Soil Group B

CN=48

CN=47

Soil Group C

CN=65

CN=64

since each watershed tiss within a predominant soil t1pe, the curve numbers were weightedaccordiqg to the a.Eount of area containing oak forest and sagebrush in each drainage basin. Acurve number of g9 was used for calculating runoff yslrrmss and peaks fron the compacted wastedumps surfaces. A high curve number was intentionally selected to provide a conserrrative ssrimxteof runoff from waste dumps; the actual nrnoff would be cxpected to be less than that predicted.The assumptions used in these calcurations may be found in Table 3.12-1belo$,.

9r REVISED 9.D.89

Table 3.12-1 Curve Numbers for Barneys Canyou Drainage lasins

Drainage WS Curve Soil Vegetation RunoffDepth (in)Basin ID Area Number nnre 7o oak d saee 10yr afyr 100yrM (inpdnt)

N

oP

oR

sT

Baruep Canyon

Upper Mel-Co

Iower Mel-Co

565 65

118.0 ,18

452 ,18

33L0 65

96.0 65

462.0 65

580.0 65

37.8 65

4130 ,18

18.9 65

10.4 65

c45

Bq

Blm

c30

C ,10

c25

c45

c00

B75

c00

5sffi

00

70

60

75

55

100

E

100

100

038

0.03

0.(B

038

038

038

038

038

0.(B

038

038

051

0.06

0.06

051

051

051

051

051

0.06

051

051

0.86

0.18

0.18

0.86

0.86

0.86

0.86

0.86

0.18

0.86

036

The drainage basins and watershed areas used in the runoff peak and volume calculations areoutlined on plate V. Calculations were made 's,i'g the undisnrbed watershed areas so that alldesign" would be consenrative once the facilities are built. All operational culvert and ditches bavebeen designed [6 [rancfsl runoff from the 10-year, 2ahour runoff event. The largest watershed tobe disturbed by the operation is Barneys Canyon with an area of 1430 acres. The Barneys Canyondrainage will remain targely unaffestsd by the operations with the exception of the Mel-Co pitaccess&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 largesections of drainages P, Q, s, and T. pleinage area R will remain largely undisturbed by theoperations cxcept for a snall area to be occupied by the two northeastern-most leach pads. TheMel-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 advantageof the existing impoun'lment capacity created by the B&G railroad grade fill structures. The B&Grailroad grade nrns along the eastern perimeter of the project site. The fill structures throughdrainage 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 theseculverts may be found in Appendix D-I. The stage/capacity curves for all impoundmeng located inthe project area rnay be found in Appendix D-I. The nrnoff volunes from the watersheds upgradient

of these inpoundments were calculated using undisturbed acreages. Usi"g this technique, the nrnoffvolumes calculated should be in excess of the actual runoff volumes after all facilities areconstructed, because precipitation faling on active leach pads will be directed to the solution pondsand inactive, ore-covered pads will have substantial moisture retention capacity.

Most haul roads have been designed to allow water runoff from both road surfaces and theupgradient 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 createthree temporary i"'poundments which will latcr be filled with dump materials. Culverts will not beinstaled in the road fill matcrials that create these temporary impoundments. The roads wi[ besloped away from the road fill slope so all precipitation water falling on the road surface wil draintoward roadside ditches. Roadside ditchEs will run the length of the haul roads througb the projectarea and will be placed along the roadside cut slope to collect all runoff from the watershedsupgradient before the water floun onto the road surface. The roadside ditches will be triangular inshape and x rninirnrrm of 1.75 feet deep. The ditches will have a 2h:1v sideslope from the roadsurface and th:1v from the cut slope. These ditches will be placed at the sane gradient as theroad" Many of the haul roads will be excavated into the bedrock adding stability to these ditchesduring high nureff events. AII roadside ditches will drain to corrryated metal pipe culverts totransfer 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 cuhrerts have been desiped to pass runoff from the lo-year, 2A-hour runoff event. Theculverts will be placed along the natural channel gradient [s minirni'c erosion. Desigp specificationsfor &ese culverts may be found in Appendix D-tr.

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

Runoff from the snal drainage area upgradient of the Barnep Canyon pit waste rock dumps andfrom the adjacent waste rock dump surfaces will be diverted fu1e rmpoundment M located upgradientof 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 theuppermost haul road and will be diverted along a roadside ditch and thtough a culvert forcsafainrnsaf in Impoundment M. Runoff &om dump 6500 will also drain through a cu&,ert forcollection in Impoundmett M. In addition, runoff from the y6ste drrmp 6400, adjacent to theBarnep Canyon pit, will drain into rrnpouadment M. The 1fi)-year, 2ghour runoff volume from thethree waste dumps and the upper watershed witl be 103 acre-feet and will be easily containedsithin the 47 acre-feet capacity of Inpoundment M (Table 3:r.-z). Current Utah DoGM regulationsrequire that the impoundments Bust contain the lGyear, ?*howrunoffvorr,-e.

Before the waste dumps arc builg the haul road to the truck shop will create threcimpoundmeuts in the area to later be occupied by the waste dumps. The impoundment to beoccupied 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 beyondits perimeter. The other two impoundments, designated D'r-p 6500 A for the nefr impoundment tothe north and Dump 6500 B for the north impoundmenf will be used to contain runoff from thewatershed above until the waste dumps are completed. These impoundments are not shown on plateIrI' The capacity ef prrmp 6500 Impoundments A and B will contain the full runoff vol,,me from thelfl)-year, 2#hour runoff event from the upland drainage basins.

94 REVISED 9-29-89

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

The retention capacity of each of the railroad grade impoundments was calculated fromtopqgraphic maps and knocn spillway culvert invert elevations. Based upon the elevation of spillwayculvert inverts, the capacity of each of these irnpoundments and the calculated runoff volumes forthe lGyear, ?S-year, and 100-year, 24-hour runoff evelts draining into these irnpoundments fromuplaad drainage basins are given in Table 3.12-2, As can be seen in Table 3.12-z,all impounrtmentson the proper$ will contain runoff &om the l0G.year, 24-hour events with the exccption ofImpoundments 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 thecalculated 100-year, 24-hour nrnoff volume from the undisnrbed drainage basin. None of therailroad grade impoundnrents ghgs, sig,ns of significant water impoundment.

Table 3.12-2 Barnep canyon project Impo'ndrnent eelltainmsnt Vorumes

r-poundmenU Watershed Impoundment

Runoff Volumes (Acre-feet)

lqr ?Syr 1005rr

M

P

oR

sT

Mel-Co

Du-p 6500 A

565

332.0

!)6.0

46'2.0

s80.0

37.8

43.5

?3.L

47.0

a5t2.4

2L.0

85.4

9.0

80.0

51.9

5.8

105

3.0

14.6

18.4

L.2

L.4

0.9

7.1

14.1

4.L

19.6

u.71.6

1.8

r.2

103.

a86.9

33.1

41.6

2.7

3.1

2.0

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

REVISED 9-29-89

o

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

across Dry 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 ditchesto be routed around the rnine dumps before release into either the Mel-co impoundment or a snallchannel east of the waste dumps (Plate ltr). Comrgated metal pipe culverts will be placed in areaswhere drainage will cross the roads. The haul roads will be excavated into bedrock srsating stableroadside ditches. A triangular c,hannel has been designed to carry water from the eastern part ofthe Mel-Co mins drrrnp are4 including areas occupied by haul roads of Mine Dump 73(X), to an areasoutheast of the nine dumps for discharge into Dry Fork Creek. This channel will be constructed ata gradient of lVo or less along the geaerally undisturbed section sf csennel placement so inliltrationand evaporation will be maximized- This channel was desiped to maximize seepage 61d minimize

runoff from this steep area. These ditch designs are 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 exposeddtui4g rnining will increase the potential for serli-ent movement both on the site and to locationsoff site. To control this process, a number of sediment control features will be placed on site toinhibit 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 sedimentmovement, 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 sedimentmovement dndng operation for additional control of erosion.

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

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 (plateuD' The designed SG'year event capacity emergency culvertg described above, provide the onlydischarge Points from the impoundments. These sedinent storage lacinr will be maintained asneeded by periodic remoral of the collected ss.ti'nsnts to maintain the existing capacities of theimpoundments. Stage capacity curves (Appendix D-I) for each of thase inpoundments have beenproduced to veri$ that the impoundnents have adequate capacities to contain the lo-year, 2A-hourrunoff volt""es from the upstream dvainage are6. Sincc rhis railroad grade cuts across all of thedrainages donmgradient of the project site, any s,sdimsnl not contained by upstream sediment controlstructures such as silt fences or hay bales would ultimately be contained within lgsss impoudments.

TVo forms of sediment control will be implemented to controt sediment nrnoff from the wastedumps, the largest potential souroes of scdiment on the property (plate III). Waste dump surfaceswill be sloped away fron the d"-p margins. gerlimsat barriers wi[ be placed dowagradient of thetoe 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 thecpbemeral shannsls or behind the impoundments. Natural vegetation in areas undisturbed byopcrations will also retard sedimeat movenent dounward.

The Mel-Co Pit and waste dumps are situated near the ridge of the Dry Fork drainage basin

Ghte m). t[g mining 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-CoirnPoundnent [9 rnininriz€ sediment movenent from the site. All uncontrolled sediment will becontained 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 runofffrom the road surface and the uphill watershed area will nrn along a series of connecting roadsideditches bcfore being spilled into Dry Fork below. The ditches wiu be crcavated into bedrocktberefore, the erosive forces of gully erosion during ditch runoff pitt !s srnatt. The roadside fillslopes ofrer the greatest potential for erosion as these slopes wi[ be nuch steepcr rhrn 1trs hiilsidson which they lie. Sediment from these slopes will be caried alo4g the roadside ditches to bedeposited behind silt fences or the Mel-Co impoundment. These structures will be placed in thelower elevation of the Dry Fork channst @ate ltr). The natural vegetation in the area will alsoretain some sedi'nent as it moves from 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 willeventually be carried to the railroad impoundments where sediment build-up will be monitored andcleaned out when neoessary.

The potential impacts to Barneys Creek &om the proposed rnining facility will be caused mainlyfrom haul roads and the Barnep C;anyon pit (Plate III). The largest potential inpacts to BarneysCreek will be from the erosion of haul road fill material during construction increasing sedimentationrates into the stream channel. This impact should be of short time frame. g1tr"1 impacts toBaruep Creek could occur &om haul road placenent across the stream channel potentially causiagdegradation or aggradation of the streanr cfuanngt upgradient and downgradient of the crossing. Anyadditional sediment loads cntering the stream chennel will be impounded bchind the railroadimpoundment downstream and wilt not leave Kcnnecott property. Due to tbe location of thisimpoundmeDt' wNter quality stream flow monitoring is not planned. There will be no impact onBarneys Creek &om Barnep Canyon open pit due because the pit itself will prevent any dischargefrom occurring.

Topsoil stockpiles will atso be potentiat sources of sediment release (plate Itr). The topsoilstockpiles will be located on the ridge+ops away fron &e stream channels [s minimioe topsoildischarge 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 checked and maintained when needed.

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

3.1!l DisturbedAcreagc

The total disturbed acreage for the project area is summarized in Table 3.ui-1.

Table 3.1i1-1 Disturbed Ar:s3 gumrnary

S!!e.

EITS

BarneysMel-Co

ROADS

BC Haul RoadLandbridge #2Road #1Road #2Iab/Process Plant RoadRunawayRampAccess Road to Mel-C-oand Mel-Co Haul Roads

ADMINIPROCESS/SHOP

{rlmining{ion BuildirgProcess/LabCrushing/SoeeningShopPotable Water StorageOre StockpileGraveVClay Pit #1ClayPit #2Alternate ClayPit

Acreaee (Ac)

375

56.435.2

1436.4434.63.71.2

3.417.99.1

10.40.26.t15251.4

99 REVISED 9-29-89

Table 3.L11 Disturbed .fusx grrm,nary (continued)

TOPSOILSTORAGE PILES

WASTE DUMPS

6300 East6400 West6500 WestUBW 6600 SouthIBW 6400 SouthMel-Co Mine Dr"'tp SurfaceMel-Co Mine Dump Outslopes

LEACH PADS

BC-1BC-2BC-3BC-4M-1M-2Future Leach pad

MISCEI.ANEOUS

Substation

TOTAL

2.71.05543z72.755154.1

6.730.611.0m226.433292

fi.74.7435583n.8185165

ABcDEFGHI

.4

7L0.4

100 REVISED 9-29-89

THIS PAGE INTENTIONALLY LEFT BI.A}TIC

PAGES lOl.lAND 101.2 HAVE BEEN ELIMINATED.

101 REVISED 9-n-89

4O IMPACTASSESSMENT

The predicted impacts of the Barnep Canyon Projoct ou the environment are eirmmarizcd below.

4I Surfref,rahr

Barneys Geak vrhich florm from Baraep Caayon is intermittcat * ie hcadwaters and percnnial

ot'€r a mile reach adjacent to the south side of the Barneys Canyon open pit and mine dgmp. The

location of Barneys Creek is shoc/tr in Ptate I. It is anticipated that the project will hara no

impact on Baraeys Creek" Other naturat drainages in the arca contain intermittent streams. The

rnining operations will intemrpt sermal of the intermittent drainages in the area The major

wi[ be located at the mine waste drrmps whic,h will fill areas cfiere natural drainages

currcutly cxisr Additioaal project facilities influenciag surface water runoff from the site include

haul roads, oper pit$ the cnrsher sitg and the leach facilities.

The opcrational runofr control plan has been designed so that the site will have zero discharge

during storm events with a l$'year, 2#hour recurreac€ interval. Hencc, ns impact to offsite

surface water is anticipatcd"

Despite the modifications that the project will make to the locat cpheneral ard intsrgittent

drainage pattern, these modifications will have no effect on existing non wildlife water use. The

creation of impoundments on the site nay harrc a beneficial afrect on wildlife and liwstock that will

use the area following recramation by providing seasouar water supplies.

Lgz

42 CroundWarcr

The Barncp Canlon rnining projcct is anticipatcd to haw os i'npact on grormdsratcr quality

bccausc all lcach solutions will be coataincd on sitc in tincd nufacc impoundmcnts or within thc

liacd heap lcach pads.

ltc groundwatcr quastity Eay bc altcred by dcwatering of tbs Barucp Caayon pit during rnining

opcratious Bccauc of the ptanned dcpth of thc Baracys caryoa 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 circumfcrcacc of thc pir Ttis puurpiag will rcnorr

watcr Aom thc bcdrock aquifcr creating a oone of dcprcssion bclow thc pit arca 1tis couc of

dcprcssiou is aot anticipatcd to influence ncarby watcr urc\ giwu thc long distaacc and thc low

permeability of the aquifer. All intcrccptcd pit watcr will be utitizcd as neccssary for dust control

on thc roadg ald for proccss rnrkggp 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 anticipatcd rhal inflsw ts

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

cxccss water will bc dischargcd into one or Eors ucarby drainagps whcrc &c watcr qrill i'npound

bchitld thc railroad impouadacats on thc castcru cdgc of the property. No dischargc into the tirre

strc^aE channel of Barncp Gcck will take place. thc water will infiltratc into the groqnd bchind

the gradc. No discharge pcrnit wiu be accdcd bccause 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. Darncs and Moore (1988) determind based upon piezomcters conpleted 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 possible pit dcpth and indicate that the clcvatioa

of thc pit bonom will aot exoccd a dcpth of 6900 fcct. Thercfore, no impact upon grouldwatcr

1(B REVISED 7.2G88

quantity or qrtaliSy from the Mel-Co pit is anticipatcd.

43 SoilRcsourccs

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

stoc&Pilcd topsoils. Duc to stccp slopcs and relatcd workcr safcty requircncats, vzrianccs for

topsoil salvaging aad rcplacencat arc bcing songhq as disossed in Sccion 6.0. With tbc cxocption

of arcas proposcd for narianccg topsoil wi[ bc sahagcd from 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 Reptaced topsoil 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 resoruces witl,

thcrcforg bc protectcd to tbe maximum cscnt that prudcnt and 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 toss of forage and covcr will be rninimal in thc

oontcs of tbe proicct as a wholc. Possiblc changcs 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

somewhat by thc crcation of wildlife watering sites in impoundmeuts in the Barneys Canyon pit and

behind mine dumps. In addition, Kcnaecott's practice of allowiog ao hunti'g on its property will

climinatc the impacts of combined [nnting prcssure and babitat loss on the herds.

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

REVISED 7-2A-8

rclcing for tbcir reconncDdations oolcaraing clk catving habitat and c& and dccr winter mnge.

Kcanccott and the Division of OiL Gas and lfining harc bccu informcd by thc DWR that the projcct

opcrations will not adrrcrscly affcct 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 possiblc dndDg calving 6casoD. Ncithcr thc Mcl€o or Barucys

Caapn opcrations will rcquire aoccss to thcsc areas. Kcnnccott crnnot of coursc rcsaia acccss to

priratc landowncrs or lcasc holdcn rvho uay rcquirc a@css to propcrties il thcsc cantoss or to its

o*a pcrsoaacl nrho any harrs to entcr tbc nqin fuassfi of Dry ForL for thc purposcs of property

amintcnancc or water monitoriag.

45 AirQoality

4i1 smiscioss rculting from thc rnining opcrations wi[ bs ftrgtirc dust and dicscl cmissions. A

aumber of point Eolltcc air cmission Bourccs will occur within thc proccss plaat area Thc principal

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

earissioas calcolations arc incorporated in tGonccotfs T.Ioticc of Istcnt to Commcace lvfining aad

Gold Proccssing opcratioaq Barnep Canyon Projccq Salt Late County, Utall Subnincd to Utah

Burcau of 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 supprcssion of cmissious. Thc

controllcd cEissioas calculations in the above.rcfcrcnccd AQNOI indicate that thc Baruep Canyon

projcct will not bc a -ajor cmission souroe undcr Fcdcral Prcrcutiou of Significant Dsterioration

(PSD) rcgulations. Thercforc it is concluded that &c project will not causc a significant

dctcrioration of air qudity in thc area.

105 REVTSED 7-20-88

46 hblic l{calrh a"dsaf*y

.[ll rrrining and proccss opcr,ations will bc opcratcd iD firll aocordance with safcty rcgutations

administcrcd by thc Fcdcral Minc Safcty and Hcatth drftninirtration (MSILd). The ocaryational safcty

rnd hcalth Program will aot only protcct worlccr safcty and hcatt\ but also tbat of mcobcrs of the

gcncral public tbat will visit tbc propcrty. Maintcnancc of a safc on-sitc work cnvironmcnt and

adhcrcne to tbc air cnission control progran will iuure that no harnful airborne particulatc or

elcnical cmissions will lcaw thcpropcrty.

IGnaccotf by virtuc of ie cacDsive land ouruenhip in the area, coatrols all acccss to the

propcrty. Hcnce, an cffcctive safcty buffcr zonc is adjaccat to the projca sitc. In additiou to

otrcrall controlled acccss aad the site safcty prqgam, other specific safcty Bsasurcs wiu be takcn to

firthcr insruc public safcty. Ttesc mcasurcs will iacludc loc&cd gatcs at all acccss poina ufrcn

opcrations arc dormant, fcnccs around all proccss arcaE 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 complction of nining Es part of rcclamation In additioq all

Proccss facilitics wiu bc rsdaimcd aftcr any qanide-bcaring or othcr toxic-materials-bearing wastes

are ueutralizcd or safclyrcnovcd from 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

secondary purpose ofproviding a souroe ofwater 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 disposed as 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"1 nsp-hining use.

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

unless they are preserved for a continued non-mining usei

fuel and explosives storaee facilities will be salvaged or transported off-site for disposal; and

fences will be removed and salvaged or jn,,ked following completion of reclamation.

Necessary security meastues will be maintained until satisfactory reclamation has been achieved.

106 REVTSED 9-29-89

522 DcmolitionDebris Dlpcal

Demolition debris that cannot be salvaged will 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 disposed of propcrly, taking into account potential hazardous characteristics.

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 REVTSED 9-29-89

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 revegetation plan 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 vegetation mixfue 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 excavations prior 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; areas to receive topsoil are described in 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 revegetated will be developed; however the design sf this progran will

not be included ii 1f,s rnining 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

12n spaci"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 excess will be applied as site-specific conditions require.

Table 5.4-1 Topsoil Sources by Soil T!'pes

SoilTbe

Bradshaw-Ag;assiz

Harker-Dry Creck

Dry-Creek-Copperton

Copperton

Total Topsoil Available

Swell Factor of.ZL%

TotalAfter Swell

Volume. Cu. Yds.

l?l'Lg4

319,63

q2,5%

nJ67

ffi,521

188.969

1,049,490

Table 5.4-2 Topsoil Applications by Sites

&.ROADS

BC Haul Road

Landbridge #2

BcAccess Road

LablProcess Plant Road

RunawayRamp

Access Road to Mel-Coand Mel-Co Haul Roads

Acreaee (Ac)

143

6.4

8.9

3.7

t2

n5

Volume (CY-)

23,07L

10,325

r4359

5,969

1,936

60,500

111 REVISED 9-D.89

Table 5.*2 Topsoil Applications by Sites (cont.)

S!!e.

ADMIN/PROCESS/SHOP

{drninistl{ion Building

Process Bldg"/Substation

Crushing/S oeening/OreStockpile

ShoplPotable Water Storage

GraveVClay Pir #1

ClayPit #2

Alternate Clay pit

WASTE DUMPS

6300

ffi

6500

BC pit Roadfill D,rmp

LEACH PADS

BC-1

BC-2

BC-3

BC-4

M-1

M-2

Mel-Co Mine Dump Surface 33.2

Upper Mel-C.o prrmp Outslopes 262

Acreaee (Ac)

3.4

2L.l

173

l:}.3

15

25

t.4

65.8

273

45.1

5.4

Volune (C\t)

5,485

34,105

n,876

21,490

44n

4033

2,89

56.9

43.5

50.8

ffi2

30.1

19.7

106,159

44,059

72,747

&658

53,563

44247

e\n4

70,v+5

81,974

n,L62

4,496

31"tls

L12 REVTSED 9-29-89

Table 5.4-2 Topsoil Applicarions by Sites (cont.)

S!!s.

Futue l-each Pad

TOTAL DEMAND

TOTALAVAII.ABLE

TOPSOI BAT.ANCE (EXCESS)

Acreaee (Ac)

19.4

579.6

Volume (CY)

3L.zffi

993,954

1,048,490

y,637

55 SeedbedPreparation

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

topsoil. seedi'g on topsoiled dr"np surfaces will be 6scomprishgd with 6 yarrge drill.

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 passes througb

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-release fertilizer 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 discussions with 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 means of enhancing the post-rnining use of the reclaimed area.

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 Seed Mi*ure for Topsoiled Areas

Common Name

Grasses

bluebunch wheatgrass

intermediate wheatgrass

Great Basin wildrye

Kentuclry bluegrass

Legumes

yellow sq'eetclover

Cicer milkvetch

purple prairieclover

ladak alfalfa

Forbs

yarrow

balsamroot

blue fla:r

firewheel

Shrubs

Basin big s4gebrush

rubber rabbitbrush

antelope bitterbrush

curleaf mahogany

Totd

Scientific Name

Asroowon soicatum

Asoowon intermedium

Elvmus cinereus

Poa pratensis

Melilotus officinalis

Astrasalus ciccr

Petalostemum oumureum

Medicaeo sativa

Achillea millefolium

Balsamorhiza sasittata

Linum lewisii

Gaillardia oulchella

Artemisia tridentata

Chrrnothannus nauseosus

Purshia tridentata

Cercocamus ledifolius

Prs(l) rbv

Acre

I

1

1

1.5

0.25

1

1

0.5

05

05

2

1

20.75

3

3

3

0.5

116 REVISED 9-29-89

Table 5.61 Seed Mirure for Topsoiled Areas (Continued)

Common Name

Plantinss

Gambel oak (clumped)

(1) PIS = Pure Live Seed

Scientific Name

Ouercus sambelii

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

PIs(l) rbv

Acre

4s#uA(2)

Table 5.62 Seed Mi:Crue for Areas Not to be Topsoiled

CommonNane

Grasses

bluebunch wheatgrass

tall wheatgrass

Legumes

yellow sweetclover

shrubs

black sagebrush

rubber rabbitbrush

Total

Scientifrc Name

Agoowon spicatum

Agroowon eloneatum

Melilotus officinalis

Artemisia nova

Chnaothamnus nauseosus

PH(l) rbv

Acre

-050

I

8.50

tn REVTSED 9-29-89

Table 5.6-2 Seed Mixnre for Areas Not to be Topsoiled (Continued)

Common Name

Forbs

gambel oak

snowberry

rubber rabbitbrush

(1) PIS = Pure Uve Seed

Scientific Name

Ouercus sambelii

Srmaohoricamos oreophilus

Chrvsothamnus nauseosus

PIs(l)lbv

Acre

4s#u^Q)

3

1

Table 5.6-3 Riparian Seed Mixrure

Common Name

Grasses

western wheatgrass

smooth brome

Lezumes

yellow sweetclover

sweetpea

Shrubs

woods rose

chokecherry

blue elderberry

Totd

Scientific Name

Aeroo\Ton smithii

Bromus inermis

Melilotus offrcinalis

Lathwus latifolius

Rosa woodsii

Prunus viroiniasa

Sambucus cerulea

P$(1) lbv

Acre

3

3

1

2l

2

4

118 REVISED 9-29-89

Table 5.6-3 Riparian Seed Mlcure (Continued)

Common Nane

Plantines

bigtooth maple

Gambel oak

Scientific Name

Acer prandidentatum

Ouercus sambelii

PIs(l)lby

Acre

n #uA(z)

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/1v slopes.

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-phosphate fertilizcr 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

pellet either rrsing a helicopter or a cyclone spreader unit.

During the planting of the sbrubs specieq a fertilizer tablet of 2&lG5 will be inserted in the

hole at root deptb and irrigated. These slow release tablets are designed to provide fertilization to

the ssedlings for two years.

127 REVTSED 9-29-89

5a2 Fcrtilization of Nm-Topsoiled Arcas

Fertilization of non-topsoiled areas (Mel-Co 7100 and ?200 dump outslopes) will be identical in

chemical fertilizer tlpe and quantity as described for the topsoiled area, in Section 5.8.1. Fertilizer,

Eulch' and tackifier will be applied in a slurry by hydroseedi"g methods.

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,rn colsnizatisn. The buildup of microorganismc and the resultant

increase in nutrient cycling capability in the soils facilitates plant establishment and 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 dismemberment of stems to 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 backdragging or raking.

1?2 REVISED 9-29-89

59 Surhce Water Hydrolqg and Sedimcnt Control

59JDrainage Plan

The post-reclanation surface a,31g1 drainage 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 slopes to rsduce erosion (ptate vI).

Road Grade (percent)

10 to 14

6 t o t 0

4 t o 6

less than 4

Snacine (feet)

200 to 100

300 to Zfi)

zl00 to 300

as needed

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 exisring natural channel.

123 REVISED 9.29-89

The mine d'mpS will be ripped and revegetated to 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 revegetated dump 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 Sediment C-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 deposited in these impoundments. The capacity of these impounrrments

are well in excess of the potential volume 6f ssdimsnt to be released from the upgradient areas.

13.1 REVTSED 9-29-89

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-mining use of the open pits, a number of

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

requests are Presented below in order of the listing of sub-parts of Rule M-10 iD the regulations.

6.1 Variance Request 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 Variance Requcst 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 REVTSED 9-29-89

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

demonstrate that the mine dump outslopes are stable.

63 Vadane R€qpcstfrmRule M-10(t

Kennecott does not propose to back-fi!|, rcgradq topsoil or revegetate fts 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

revegetation has 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 revegetation be 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

necessitates tbat this activity Ss n sonsrrmFtive land 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 previorsly pointed out, the Barnep Canyon nine pit may serve a secondary benefit

to wildlife by providiag a watering site in thtough collection of runoff from the pit walls. Were the

pit to be partiallyback6lle4 this potential source of water would be eliminated.

6.a Variance Rcqrrcst 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

and 7100 nring dnmps at Mel-Co. The steepness and 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, especially over a three-year time period.

726 REVISED 9.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 Tmpounrlrnent M, behind mins dump 6400 and the Mel-Co impound'nent to remain fo[owing

recla-ation.

6.7 Variance Roqpest 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 REVISED 9.29-89

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 spreadshccts of the reclamation components and associated costs for each

area of &e property receiving treatment. All assumptions, references, and ancillary calculations

used in preparing these spreadsheets are found in Appendix H-2. Table 7.0.1 srrmmarizes the costs

for each component. The total cost of reclamation (in 1988 dollars) is ssri'natsd to be $2,206,30.

Table 7.0.1 Reclamation Cost Sumnrary

Comoonent

ToPsoili"g

Pit Safety Berms

Fill Slope Regrading

Rip Topsoiled Surfaces

Leach Pad Perimeter and Pad Regrarting

Fold Pond & Lcach pad r.inEls

RunoffControl

Cost

852,610

3,370

4o7,m

18,470

23,T10

4,990

25,000

128 REVISED 9-29-89

Table 7.0.1 Recl"mation Cost Summary (Continued)

Component

Revegetation

Equipment Mob/demo

Cost

7s4sil0

L3,2n

$ 2,101,280

105.060

j 2wN

Supervision (5% of subtotal)

Total

IE REVISED 9-29-89

8.0 Refcrcnccs

C"ll and Nicholas, 1987, Barnep Canyon and Mel-Co Slope Design Prepared for BP MineralsAmerica

Caterpillar,Inc., 1988. Capterpillar Performance Haadbook, Caterpillar Inc., Peoria,Ill.

P-o & Moore, 1988. Surface Water and Groundwater Assessnent for the Baraeys Canyon GoldProject Sdt kke County, Utab. prepared for Bp Minerals.

Hawking R.H. and K-4. Marshall, 1980. Storm Hydrograph Program, Final Report to the UtahDivision of oil" Gas and Mining. utah State university i.ouoaatioq t,ogao, utal"

National Oceaaic and Atmospheric Administration, LyB. Precipitation - Frequency Atlas of theWestern United States: Volume VI, Utah- NOAA Atlas Z

Sergent, Hauskins & Bechrit\ 1988. Geotechnical Investigations R"porq Heap Leach Padg Barnepcanyon 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 Conservation Service, 19t2. National Fngrneering Handbook Section IV - Hydrologl.

Soil Consenration Service, 194. Soil Survey of Salt Lake Are4 Utah- U.S. Department ofAgriculture.

!Y^:q AJ-, 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 Lakevalley, utah, 1969 - &5. Tech. pub. No. 99, utahDepartmcnt of Nattual Resourccs.

!V1dde4fU., Seiler, RJ-., Srntini, Melissa, and DJL Solomoq 1987. Ground-Water Conditions inldJ 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}T CONFTDENTIAI' TILE

FIGURE A-I-1

BARNEYS CANYON DEPOSITGENERALIZED GEOLOGIC MAP

AND CROSS SECTION

CONFIDENTIAL

- -REDACTED- -

ORIGINAL LOCATED IN DOGt,t COIIFTDENTIAL FII,E

FIGURE A-T- 2MELCO DEPOSIT

GENERALIZED GEOLOGIC MAPAND CROSS SECTION

CONFIDENTIAL

APFEII{DTXA.tr

GEOII)GIC II)GS OF DRILL HOLES AIiID WELI,S

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I s 8L/Lt ,

sl ighcly moisrhard

CRAVELLY SILT AhtD CLAy wic.hsone fi.ne to nediun sand, lowplasr ic i ty, brown

s l igh t ly mo ischard

SILTY CI.AYEY GRAVEL A}:DCOBBLES uit,h some sanci, sub-rounded, low plast ic icy,light brornr

note: very di f f icul t auger-ing fo rn l0 ' to l2 ' , re fusa lat Lzf (coved into weak sand-stone boulder), moved hole5' south and resumed

slighcl-v moiscvery firrnto f irm

GSAVELLY CL{YEY SAIID/SAITDYCLAYEI GRAVEL, low plascici.ryco uediun plasticity, brown-ish red, and Dott led brorcn,l ight gray and yel low (possi-bly volcanic snrd flow)

note: added water below 15 I

to reduce fr ict ion

note : very d i f f i cu l t auger -i n g f r o m 3 5 ' c o i 0 '

.)< A.+0/.3',

suRFAcE e lev . 5601 .7 -DATUM- } I ine

G P O U N D W A T E R

A - Asgcr cunangr. B - Blccl roaplc r[C:7fs - 2" o.D. l .3s'. t .D. robr ronote. - ' lJt+' l .u - 3 " o .D. 2 . r2 . . I n . , , r - . - - - r - i , r ' t sk

JOE NO

G R O U N o W A T E R

L ( - ( ' ( r r I r 5 t BORIHG NO. B_2

clE-55

ffiffiJ:tD A

S c o p p e d a u g e r a t 4 5 . 0 1S c o p p e d s a m p l e r a t 4 5 . 3 '

di f f iculcy removiug rods, hadEo Eurn augers several Eimesn ix ing c lays , moved easE IS 'co resample anci inscal lmon icor ine we l l

R I G T Y P €

co

o o

! : -a ' :

€ r- - o

: ) g

: 5 to = -l o os::c c .o a a

u c c

fI

SAr,tpLE TypEA - Av9r. cur iagr. B - Slocl roaclr5 - 2" O.D. 1.3g. . t .D. rvbc ronpto.U - 3 " O .O . 2 . J? . . t .D . r ub r r oao t - .

A- IOASERGENT. HAUSKINS & BECKWIT}f!,TMi,

aa

acE0

_! !3 : E- : o

i i ;; 3 i

"r : !

C -a a

o a- i

oo

ca

U

ao. vlsu^L CL SStFtclttox

CLAYEY SAI{D At{D GRAVEL, towplast ic i ty, dark brown

sl ight l ; r rnoiscdense Eovery dense

SILTY GRAVEL AI{D SAND' oon-p lasr ic , subrounded, l ighcgrayish tan

eoistvery denseto dense

SAI{DY GRAVEL wich rrace ofclay, wel l graded, subroundedlow plast ic l t l r , tan, orange,and Light gray

CLAYEY SAI|DY GRAVEL, predom-inantly fine sand, low plas-ciciry to medium plast ic i ty,Ean

noi.stvery sri f fro sr i f f

/ . . { r ' c t l g - .

, a t l . _

, < : i

t : . i .<srcsaturated below' 2 9 . 5 '

s--50/5j'-

sat,uraceds r i f f

SANDY CLIY-SILT, predominanc11r fine sand wj.ch scatteredgravel, lon plascici ty couediun plast ic i ty, tan

saE.uratedvery dense

S&\DY GRAVEL, predominanclvf in to medium sand, s,rbangu-lar, l ight gral ' and tan

o€P tH H O U R O A T E

26 .5 09 :00 L2-4-87rV '8h

- l l \ v r S v .-JOB pg- 867-2039i. Olr i - l2:6.a-rf L W \ J \ . z l l r r r N O . B - 2 B-

, o f B-2)s ( . . ) X l t i G

( 2 5 ' E

T1li

ia

r t

ar C r

i ! i, 3 0

€ : !C C 'a a a( , a c

o

9 oJ O

( ' J

l i. l :c t q€ t Eo l o

- i !3 s E

:i;i 3 ii :=

C ra a

o sa i

O J

_ t: lE o

r J oa :: -: Ut :- c

co

o €

1 €. : :? l) U

nrc rvpe CME-55EoR|NG rVpesuRFAcE e lev .orruu lt in

REH RKS vtSu^L CL^SStFrCaTtox

5

sc CLAYEY SA,ND

.cltSILTY GMVEL

'.6-

v,.?,

- lo,

l0

l5

itQh-t',:d.C.]i:-q

CRAVEL wich sone sandtrace of c lay

I tol(tlI;I

l,o

II noisr roI sacuracedfur?$iurn sriff ro

rv sEiff

\ H. o S- ..-- ,<.

SAIIDY CLAY, predomJ.nanrlyfine sand L'it,h gravelly zonesand gravel/cobbles 1ayers,

no te : fe l r so f r ac 241

35

40

GRAVEL/CLATEY GRAVEL

45

(

S c o p p e d a u g e r a c 4 0 . 0 'Instal led noniror ing r ,-el l :

B o c t , o m o f p i p e a c 4 0 . 0 'S lo t rec i ro 37 .0 '

C o a r s e s a n d c o 3 5 . 0 'B e n t o n i c e p e l l e r s c o 3 4 . 0 1

S A H P L E T Y P EA - Augr r conangr . I - S lock toap l rS - 2 " O.D. 1 .38 ' . l .D . fubc roae le .U - 3 " O.D. 2 .12" t .D . rubc ioao lc .

_ t _

iffi1sERGENT, HAUsKTNS & BEcKwr+illoB

J OB N O.1"9-L.193S..1,_ D

! t t5 = -t c c

: : :c c .o a a

t J G C

- i !t s Ei it-i 3 i.3!!

: !

C sO a

O A

- iO J

_ t5 .? o

lrJ o

a :i :

: e; ;= o .

co

o a

1 Sa ' :

€ r= o= U vtsu^L CLaSStFtcAt tox

T33 . .

59

cL . .50 16

44 gg 18

moiscver]' firn

CLAY with some fine sand,nediun plascici ty, dark bror,rn

noCe: sone f ine gravel below5 '

noistver:/ firnto hard

sl ight l l ' moisrto moistver-\r firmo?rard

--i{c !..{.,c

CRAVELLY CLAy wirh some sand,low plast ic i ty, tan tr i th somelighr brown-gray and blackPockeEs

-11a1-,r1rr-) v t )

sl ighr ly moisEhard

saturaced below3 9 . 5 ' r , o 4 0 t

Scopped auger ac 40 '

S c o p p e d s a m p l e r a E 4 0 . 9 '

LOG Of IE5 ; ECRING NO. B -3

RIG TYPE gME-55q 6 6 . \ t ^ ? v a -BoRING TYPE 61" l tol l - E: AugerSURFACE ELEV.

SANDY CL{Y wirh some gravel,low plastici.ty to mediumplast ic i ty, brocnish grayrith orange and white streaks

u 100

C R O U N D w A T E R

CLAYEY GRAVEL AllD SA-r\D: sub-angular, low plast ic i ty,brown-gray with orange pock-e t s

note: dr i l l ing pressure400-1500 ps i a r 26 I to 27 ,

SERGEI.IT. HAUSKINS A EEC*W#'' I

SAfiPLE TYPE

| - Aogrr curtaag3. I - glocl rooplc

? -

?" O.O. 1.38'. r .O. rubo :onplr.U - 3 " O . D . 2 . . ? . . t . O . , u b - . ^ - - t -

OE PTI { H O U R O ^ T E

: 6 . 9 t 6 : 00 t i-24-8_ t _:,ffi);

a ' n g J g ! ' -

199 19. ES7- j03bn DATE r l -23 -E7

' ) { 'r C o

3 : :t 3 0

i - . ic c .o a au c s

0

1 o; o

O J

ac€o

aA

ao€o

- i !3s E

:i;i e€i3!

: :- eC -a a

o g> 1

O J

- t5 l? ou oa :: :: U: := c

co

o o

a ' ;. E J3 ( J

p15 lypg CllE-55

BSRING lypE 6:1" Hollow Ste:n Auger

suRFAcE e lev . 5785 .9DATUM } t ine

:{

IIlsIIl ro

l5

20

(l

\:'l"l.'lI

( )

REXARKS vrsu^L cL^ssrFrcATtoN

2*

CL63

o l

slighcly rnoistvery firmco hard

GRA\TELLY SILTY CLAI wich sosresand, some organ ics , lowp las-t i c icy , dark b rown

s l igh t ly mo ischard

SAIIDY GRA\IEL with trace cosome clay binder, Bap graded,low plascicic.v, l ight brown-ish gray

50 /3 .5 "

slighcly aroistto uoisthard

CLAYEY GRAI/EL sith soue sand,low plasticicy' light brorlrt-ish gray

noce: d i f f i cu l t auger ingb e l o w 2 6 ' t o 2 8 'addec r raEe: f rom 26 ' to 40 '

Scopped auger ac 40 'S c o p p e d s a a p l e r a c 4 0 . 3 '

G E O U N D W A T E RSATiPLE TYPE

A - Ag9rr suning3. B - Blocl rcoglrS - 2" O.D. 1.38" t .p. rubc rooolr .U - 3" O.D. : .42" l .D. tube ronolc.

A-12SERGENT. HAUSKINS & BECKWITH

r((JJEL t

ce xo._Eg-t:038n orTE = t!;?.i:iZcuE-55

f'' r€iiai;

o

39 o: o

O J

aAEo

ac

aAEo

:iii i ;i 4€; : !

2 )- g3 :a a

o .- i; i

O J

_=3 .E o

( J l oC ?: a: e; :J O .

Cc

o o

€ r

: JJ 9

R tG TYPE , LNT , - JJ

BoRtNG tvpE 5k" Hollow Stem Auger

suRFAcE euev . 5898 '0DATUu Mine

R€rt^RX5 vrsulL cLAsslFlcATloN

5

t0

-1 i l ;v ' ' - - - - - - I rL ' -

lJEE

lraoderatel)' stiffSANDY SILT wich some gravel,

low plast ic i tY, dark brownA s z i r t t .s"

X, za , *,vAs 70

vA- s 3r - .

s l ighc ly mo is tdense tover.v dense

SILTY GMVEL A!(D SAIID, sub-

angular to subrounded, non-p lasc ic , we l l g raded, l igh t

brownish gra-v

;t 'i r l l l

'.'rttsi:

*ii:X

rci.stdense tovery dense

SAIIDY GRAVEL with trace of

silt, predorninanclY fine to

medium gravel, subrounded,nonplascic, Iigbc tanish graY

note: binder var ies from

c lay co s i l r be low 30 '

no te : d i f f i cu l t d r i l l i ng ;a d d e d w a c e r f r o n 3 7 ' t o 4 7 '

l ) '.1#FFiurr 5a

:0

I

ffi

30

35

40

l'

I2s lE

- -

45

I

l:-It - - - - -

)-

moiscvery dense

SAbIDY GMVEL wich trace of

clay binder, subrounded, wel l

graded, Iow Plast ic icY co

nonplascic, lan, orange and

l ighc gray

cRouNo wATER .. sAmPL TYPE , A -13

A - A!9t cut lang. . I - Blocl :cmPb

S - 2" O.D. 1.38" l.D. rubc rcnpb.U - 3" O.D.2.{2" l .D. rgbr rcnple.

- - K I J J ! - ,

.log xo.:37:?91:A -o^t. rr-za-s; =_-- L 9 , r u t i i , 5 1 B ( ) i l i l G N O . n _ s

r SERGENT, HAUSKTNS & BECKwtfr-l3BSA^{PLE TYPE

I - Ag9or €unaa9.. I - Elocl tono[5 - 2" O.O. 1.38" t .O. rgbc rone|r .U - 3" O.O. 2. / t2" t .D. rubc goaelc.

i l

i t ; !g\ r o o

- : : .c

3l o- o

( ' J

acEo

aA

JaEo

_: i3 s I

:ii; 3 ii :=

: t

C -a a

o 4; i

A J

_ -3 l: ou t oo ?: -: ui a= o .

3o

o o

a :S e

? JD|J

ps6 lyps Cl4-55BoRtNG 1yp6 6k" Hol low Steur AugerS U R F A C E E L E V .Dltuu lline

C 'a a

c c R€xAnxs vlsu^L CLaSSrFlcATtox

55

60

65

so l4

s0 /5 .5 '

moistvery dense

SAI.IDY GRAVEL wich crace ofclay bi .nder, low plascici tyto nonplast ic, canr orangeand l ight gray

note: di f f icul t dr i l l ingth rough cobb les f rosr 61 .5 '

(

f:

Sanpler refusal at 65. I I

Auger refusal ac 65.51

Installed uonitoring well:B o c t o m o f p i p e a t 6 5 . 3 1S l o c t e d t o 6 2 . 3 'C o a r s e s a n d t o 6 1 . 5 'Benton i te tab le ts to 57 .4 '

CHmG€otO*a C.G{€B

f , t s J - - |

aa

t

JOB NO. E87-2o?3r O; , ;E I l - _10 -3 7

a: s 50 /5 .5 , '

trt so/3": s 50 /4 "

X'

G R O U N D W A T E R

O E P T H H O U R O ^ T E

none

a,ot

!

€o

o o

a ' :€ r

: J: ( J

g .

a o

c -a a

A C

n tc r vp :BoRTNG lypg 6k" Hollow Scern Augers u R F A c E e l e v . 5 8 7 0 . 5DATUM UiNE

43

S A H P L E T Y P EA - Asgoc cvt l iagr . I - Slocl :cnole5 - 2" O.O. 1.38" l .D. robr rcnplr .U - 3" O.O. 2.a2" l .D. rubr romolc.t - . t - - . L . - - t r - j ? t . ! t

aa

aAEo

E j ii i;; = €; : !

C ra a

o aa 4

6 J

_ =5 .E o

(.it o

a - -: :: e? i: o . REH^RK5 vrSuAL CL SStFtCATtOll

moisc t,osl ighcly moist

SAI'IDY GRAVEL, subangular witsome to Crace of s1lC, wel lgraded, nonplast ic, l ightgrayish brown

noce: auger refusal on rockat 6 .5 ' , noved ahegd 6 t andresuned drill ing

note: subrounded and tanbelow l0 '

.:-i l . l e GRAVELLY CI.AY wlCh

nediun plast ic i ty,some sandtan

L D t tmoi.stmoderat,ely firn

SAl.lDY CLAY with some gravel,low plast ic i ty, tan

slighcly moi.stvery dense

GRAVEL, subangular with somesand and trace of silt, wellgraded, nonplastic, lighcgray

Stu\DY GRAVEL wich crace ofc lay , we l l g raded ' low p las-t i c i t y , tan

note: augerj .ng resistancealternacing frorn moderaE,ec o h i g h f r o n 3 5 ' E o 4 4 ' ;very high aE 441

Stopped auger a t 45 .0rS t o p p e d s a m p l e r a t 4 5 . 5 1

o E P T H I x o u n O A T E

noneI

SATPLE TYPEA - Augr r cs r ing t . 8 - B loch rono lcS - 2" O.D. 1.38" l.D. rubc rcncle.U - 3 " O . O . 2 . ! 2 " l . D . r u b . r a - - r .

tOG OF TTST gCRIHG NO. B -7

SERGENT. HAUSKINS & BECKI^f#5

('l;:g.jjj

o

; oJ O

( , J

l : .t >l F

a l .c l aE t €o t o

- i !t s E

i itt; = i

; : =

3 -a t

o aa i

O J

_ t3 t: ou o. 7i :: Ut :=c.

Co

o o

! €a ' :

: J= U

Ptc TYP F er,fF-q q

B O R T N G ' ' "

S U R F A C E E t . ' U .

DATUM I\TiNE

RE,{ARKS YTSUAL CLlSStFtcATtox

5

-:Fr--

i?..i.s' a'.-.I-

$:i:g >< s 5o/4"tt'O:'. GW-CttF::-t:;i$.i: vjqi,gAs s6 s

sl ighcly moi.srmedium dense Covery dense

SANDY GRAVEL sirh crace ofs1l t , wel l graded, subangu-la r , nonp las t ic , I igh t g rayto tan

' ffiXs so/s.s,'sl ieht ly moist GRA\'ELLT CLAYEY SAND srrhto moistf i ru to hard

rounded gravel, lou plascic-i ty, tan and l ighr tan-graywith orange pockets

20

(

Tnote: very moist a r 2 l '

40

r5

(

- o o co o :

.s l igh t ly no iscvery dense

GRAVELL:- SAI{D, predominanclyf ine to medium, sl ighc E,raceo f s i l r , n o n p l a s E i c , l i g h rgray

G R O U N O W A T E R

S E o p p e d a u g e r a r 4 5 'S c o o n e d s a m o l e r a c 4 5 . 3 '

t,W

Jo8 NO. E87-20jSA D,ATE- - v v . . - - .

( 22 ' -:i' ^_r nB \r t\l \J o -- -Nr or sE,aked locacion)

('l-

: 5 :t o o

: : :< c .o a a

u G c

! l .

"t; 13

ac

aAEo

i i ;:i"ii =€i : t

C -a a

o c- | is i

O J

- ;5 .E ou oa :: a: U; a=c.

Co

o e

a i ia ' :

: o

D U

Rtc rYPE cME_55E O R I N G T Y P E

S U R F A C E E L E V .

Drruu )tine

REXARXS v6uAL CL.rSsrFtc.rTtox

t0

l5sc

sl ighr ly moischard co firra

CLAYEY GR"IVELLY SAl,tD, mediusrplascici ty, dark brorrn, tanand browr with some clavevgravel zones

not,e: large rock(s) frour6 . 5 ' r o 7 . 5 '

20

(

t t l

:

F

:/%oZot \ S _5

30

slightly moisrto trois8very firrato hard

SAI{DY CI-AY AIID GMVEL, PTe-doninantly fine to nediugrsand, low plast ic i ty, brown-

red

note: probabllr volcanic oudflowt

I-J J

I

Scopped auger at 301Scopped sarnpler at 30'

Instal led noincoring wel l :Bo t to rn o f p ipe a t : 30 .2 '

S l o c t e d ' t o z

2 7 . 2 'P e a g r a v e l t o : . 2 6 . L 'C r u s h e d b e n c o n i E e r o : 2 3 . 9 '

SAI{PLE TYPEA - Aggcr cun ing3. I - B loc l ronp l rS - 2" O.O. 1.3S" l.D. rube ronolr.U - 3 " O . D . 2 . ! 2 " l . D . r u b r . r c a s l r .

A-16SERGENT. HAUSKINS & BECKWITH

- i !3 c E

ii;; 4 €i :=

: !C ra a

o A- a 'a - j

O J

_ =5 .: ou oa ?: a: ( J

r iI O .

SAI.IDY GRAVELLY CLAY FILL,(rnaceri.al dozer placed fordr i l l pad)

moistfirn%noistvery fir$l

GMVELLY CLAY, Iow Plascic-icy, brown

rtroistdense

SILTY SAliD, preciorninantlYf ine wich some gravel, non-p las t ic r !3o

sl ight ly Doist GRAVELLY CLr\Y with some sand,low plast ic ic l ' co mediumplast lc i ty, dark brown

CLAYEY SA,r\D with some finegravel, predoninantly finesand, low plascicity'' brownand gray

SANDY CIAY with some finegravel, predomJ.nancly finesand, low plasciciry co med-iun plast ic i ty, dark brown tobrownish red

Tslightly noist

COBBLES/BOULDER

Auger andon boulder

Sampler re fusa la t 2 0 r

G R O U N O W A T E R

O E P T H H O U R O A t E

none

SAUPLE TYPEA - Asocr dur iagr. B - Bloc& ronPleS - 2" O.D. 1.38" l .D. tubr rcaglr .U - 3" O.o. 2. t2" l .D. t i rbc ronclc.

A - I 7SERGENT. HAUSKINS & BECKWITH

f f t Q J f f J F e a o r e a c h " . c q ' r e I T n v e s : ; o ' " . , . n

1gg ;19. E87-2038A p116 t2-I5-87t Q G O f ] 8 , 5 I E O T , I N G N O . D - l U

l_ll( l::rI'ri:;

o

3* o; o

O J

ac€o

aG

tA€o

- i !t s E

:i;; f €

r r :3

C -a a

o c- r ': - j

O J

_=E}E ou c

c - -: a: U? ar 4

ao

o 6

! sa ;

S r? Jt u

Rtc rYPE cl IE-55

BoRtNG lypg 6k" Hol low Stern Augers u R F A c E e u e v . 6 0 5 1 ; 0oATuM ---, ---,-- irle

REH RKS vrSu^L cL^sstFtcATtox

5

t0

li

20

(

(

t s

\ 7

Z\.:;

A. 47

/ \s

moiscf irrahard

t oCI-AYEY GRAVELLY SAlfD, lowplasticity co nedium plas-Elcity, dark brown

sl ight ly moi,stvery dense

SAI{DY GRAVEL A}ID COBBLES,sotre to ttace of clay, lighcgray

30

{\ t .

Stopped auger and saupler at25' , extreuely di f f icul taugering

InstalLed monitoring weII:B o t c o n o f p i p e a c : 2 5 . O 'S lo t ted co . 22 .O 'P e a g r a v e l t o : 2 1 . 0 'Crushed benton i te co : 19 . l '

G R O U N O W A T E R

O E P T H I H O U R I O ^ T E

none

S^HPLE TYPEA - Asgr r cuna693. B - B loc l 3ong leS - 2" O.D. 1.38" t.D. robe ronplo.t t - 1 " l ' . | i . 1 . t ' r " I n i r .h - . . - - r -

- r - - A - I 8tls7t SERGENT, HAUSKTNS & BECKWTTH-,Wel

{ l t /KuJtr ' - .JOB NO.--9J:?03.8I.-DATE i2-1s-87

L t r t r \ . r r a : t D t - ' X l a t ( . r N ( ) . D - r r

SERGENT. HAUSKINS &A - 1 9

BECKWITH

S A H P L E T Y P E _ r _

A - Avgor curingr. B - Elock romplc ffq-,)ltS - 2" O.O. 1.38" l .D. tvbr rcoelr . - l - . ) {^ l :U - 3" O.D. 2.12" l .D. tubc roaslc. lY Ol l

,L,ro

r C r! o a

t c o

: : !C C .o a au c c

o

I

* o. o

O J

l t. l :c l eE I Ec t o

iiili:i : ! I i i

_ =5 tE o

Q ' Or ?: :: U? :=c ,

Co

o o

a ' :

: :' U

R I G T Y P E

EoRrNG rV"esuRFACE eUev.oaruu

REXARTS vrsuAL CLASS| FtCATtOt{

5

l0

t5

?o

%x, CL) a t o

a 9

s l ighc ly mo isEfirn

GRAIIELLI CLAY wich some flneto mediun sand, low plasci .c-i ty Eo uredium plast ic i ty,dark brown Eo brovn

GC

48

s l igh t ly mo iscvery fj.rm

CLAYEY GRAVEL with some'san4low p lasc ic icy , b rown, l ighrgral' anci can

moistooderately firnto firn

SAIIDY CIAY, predominanrlyfine sani with some fine tomediuo gravel, low plastic-i ty, tan

ilIIri,,llIl ' 3si

II

loo

lo,

slighcly rnoistto Eoistvery dense

GRA\IEL wich some sand andt,race to sotre clay, lowplascicic_v, l ight gray-brown

-' --7/t {'' s ta

%_%,r:

moiscmoderately f i rnto very fi.rn

SANDY CLAY, low plascicicy,tan

not ,e : g rave l l y be lowapprox iaace ly 37 '

: i

S t o p p e C a u g e r a c 4 0 . 0 'S c o p p e d s a u p l e r a c 4 I . 5 rnoEe: <ir i l led supplementalboring 12 | sourh of or iginalboring for. r ing samples:1 5 . 0 ' c o 1 6 . 0 ' : b l o w s 1 5 a n d14, no recovery, too gravel lya t 20 t so samnle no t ac temDted

G R O U X O W A T E R

CO.rl Ea cf GtrCCa..cA lg:€r3

t.r,ROJECT Heao Leac-n Pac : - . !c ,e I Invt 'sc iqa! lq-n

O*_-Eg7-2038A-DATE 12-15-87

A - Acar r cur iagr . B - E lcc l romPlo

S - 2 " O.D. 1 .38" t .D . rubr romple .

LOg Cr r r5 r t cE lNG N0.s1_

_ t _ A.:SERGENT. HAUSKINS & BECKWITH

NR I G T Y P E

BoRING lypE 6L" Hol low Stem Auger

SURFACE ELEV.orruu

( : i !

tj:io

Z9 o; o

( , J

a4Eo

ac

Jg

E!

i j i;i;i 4 ii :5

: t

C ra a

o c- | jL - j

O J

_ t5 rzou oo ?i -: Uo a

: a

Co

o o

a ' :

= O

> U RE'TARXS VISUAL CL SSIFICATION

5

t0

t5

20(

25

30

35

f,r 3esz-- --.As s2

L7- a t

v g

sl ighcly moistvery firmto hard

SAI{DY CLAY uich some gravelpredominantly fine sand, lowplast ic ic] , brown and tan

sl ighcly moistvery firu

CIAYEY GRIIVEL with sone sand

low plast ic i ty, brown, I ightgray, and yellow

12.-W.Xias : ls cc

_im7/t- r r moist

soft tofiru

SAI{DY CLAT with crace of finrgravel, predouinancly fiDe

sand, Iow plasticicY to med-

ium p las t ic i tY ' . tan%P+ri -!-'ooj41,2,

!

I

' ;t : 7*

moistvery firuto hard

CLAYEY GRAVEL rrith some sand

low plast ic i tY, brown, l ightgray and tan

: lelr

noisrfirru to hard

GRAVELLY CLAY with some fine

sand, low p las t ic i tY ' tan

Auger refusal ac 31.5 ' ( fe l tlike hard cIaYeY gravel-possiblY mrd flow)

sAi lPLE TYPE -20G R O U N O W A T E R

:,Ifri,

R O J E C T S e a D L c : i ; h F a c S i E c I i n v e s E r e : : : o n

lB XO. aE7-2038AC.rtE 12- !?-i ]7

o E P r H l x o u n I o ^ t E

none

L U ( J ' \ r r . ! > l t i \ / \ l 3 r v a t v o 3

cME-55

A - Augrr cunangt. B - Block ronelc {Sr j SERGENT. HAUSKINS & BECKWTTHt,wiu

GOanDOo:OFSO.-a cro-c€--+. . l Jaea*. 5^.C. 3t WC CR.€, l .Sat

S - 2" O.D. 1.38" l.p. rube rcap|r.

7-'t

1r ;!!

3r;:0

9 o- a

O J

Jc€e

aI

aAEc

_: !t s E;i;i 3€; :=

: iC ra a

o c- di i

O J

- :E }; ot l oo ?i :: U: a:o .

Co

o o

a ' :

? l3 9

RtG TYPE " i . i - "

BoRtNG lypg 6N" Hol lo l t Scen Auger

s u R F ^ C E E L E V . 5 8 2 7 - 5

9A1gM )line

REf .ARXS vlsuAL cLASslFlcATlox

sl ight lY moistvery firm

SANDY CIAY Al{D SILT with some

gravel' PredotrinanBly fine

sand' low Plast ic i tY, brown

and Ean

10

r5

20

(

25

30

35

40

4

(

50

s 32

'Ult 4L

sl ight lY moisEfirm tohard

CI.AIEY SAI{DT GRAVEL/GMVELLTCI"A,YEY SAI{D, low PlasticitY,browa lighc $ralr and tan

noEe: verY difficulc aguer-

ing f roa 17 ' to 20t , addedr"ier to reduce side fric-gion

/.2/-i ,'y'y't V .: '.1 r n I','t/1./-m'

+%;" --n,'-- -7/r

S c o p p e d a u g e r a c 4 5 ' 0 '

S topped samPler a t 45 ' 3 '

Instal led monitor ing wel l :

B o c t o m o f P i P e a t : 4 5 ' 2 '

S l o c t e d c o : 4 2 - 2 'P e a g r a v e l t o 4 0 ' 8 q

Crushed bencon i te so : 38 '6

G R O U N D W A T E R SAtrPL TYPE r A -2 I

u - 3" o.o. 2.r2" t.D. t"ir t.-or.. lreJl

l*ortct' LCG C t 7E5 i BC t IHG NO. b - r ' +

cYE-s5IOB NO*Ed7-2038a DATE 1242-87

O € P T H H O U R OA?E

noneSERGENT. HAUSKINS & BECKWITH

i^i€:f

c

3* r: a

c , J

ag

Eo

ac

aA€o

-a!3sE-ii;

; 3 €i :=

C -a a

o aa - j

O J

- ;: .E ou l oa - -i :: U? i= o .

Co

o !

S o

E JD 9

RIG TYPE LXI . -T)

BoRlNc TvpE 6Lr" Hol low Scen Auger

sURFACE eUev.palgg lline

Io

c .a a

a gR E T A R X 5 . YISUAL CL^SSIFICATIOX

IIII

30

0

5

10

25

35

40

45

l5

20('

I

moistfiru covery firm

GMVELLY CLAY wich some sand

low plasticicY to mediumplascic5.tY, dark brown with

tan and gral ' Pockets

note: color change co l ignt

grayish tan and less gravel

f ro ra 7 t Eo 13 '

26 . I7X'X,t 32 cL.I

)! s 48 :- -

. .- - ro'-:-. -

t.%moistflrn

GMVELLY CLrIY wich some sand

low plasticic-v Eo nediumplasc ic i tJ r Ean

uoistvery firn

CI-AYEY GRIJEL wich some sand

low p las t ic i tY , tan w i th

some orange zones

noce: high augeri 'ng rgsis-

tance belos 35' , added water

for lubr icasion

moist,very dense

- GRA\IEL ryich sooe sand and

ttace of c1a1', wel l graded'

low p las t ic icY ' can ' o range

and lighc gral'

P. . tg l ; : :

S E o p p e c i a u g e r a c 4 5 . 0 '

S t o p p e d s a m P l e r a t 4 6 ' 5 '

Inscal led ooniror ing weI l :

B o c t o n o f P i P e a c 4 5 ' 5 '

S l o c t - e C r o : 4 2 . 5 '

C o a r s e s a n d E o : 4 l ' 4 '

Bencon i te Pe l lecs ag : 39 '8.i':. 7'rg+--r

GROUNO WATER N-22sAi lPLE TYPEA - Avgrr curi .gr. B - Elocl roaplr lE' jJS - 2" O.D. 1.38" l.D. robr rcnplc. -,l.y''li. . - . . ^ A . . a . . l h . . , t - . - _ _ l - t v g t l GTEGX''EO'GA C|...CTS

* p O t E C l l i e a p i . = a c n i . : : 5 : . r . : r s v e s i J , g d L l v \ nr n v J b v

y6g 1q9. 887-203u.lOay6 . l2-I0-tl7

O E P T H H O U R D ^ T E

none

S A , { P L E T Y P E . _ r _A - Asga GU6r6e 3 . B - S loc l rompie {A l

:. - i::9-9. 1.T:::.?.:"f-::::l:. -,wel,

L O G Q t r & > l E ( ) t i t ( G l r a g . ! - r J

A-23SERGENT. HAUSKINS & BECKWITH

tiitiI

l lt l

. a - - a v - v a

{;

; 53t g o

i : :C C 'o a a

u G a

o

a1 o: o

O J

ac€o

ac

aAEo

: j i:iii 4€;3!

C ra a

o a- it - j

O J

_ t: t? o

l J oa ?: -: Uo a= c

co

o o

S r

T J= U

R I G T Y P E -

8 O R I N G " "S u R F A C E E L E V . 6 1 3 8 . 3

DATUM

REHARI (S v l tU^L CL SStFICATION

J

I!

10

I

l5

20(

I

: t : i ; -

,#i!{,_*'"v^

sl ight ly moistvery dense

SAIIDY GRAI'EL with trace ofsi.lt, predoninancly rnediumgravel, nonplascic, l ighrgrayish tan

a \ D ) z L tmoiscvery firn

SAl.lDY SILT AND CL{T ' predom-inanrly fine sand, low plas-t ic i ty, broun

sl ight ly noistdense

SANDY GRAVEL ttith slighEtrace of f ines, predominant-ly flne to nedium sanci anduediun gravel, . nonPlascic 'Ean, orange and lighc graY

note: heeq' auger chaEt,erf ron 17 '

:-3O

I ,ryJJ

. l

slighcly moistvery firnto hard

SAI{DY GS.IYEL with sorne claY 'predorainantly fine to mediumsand, 1or, ' p last ic i t .v, brownand. tan

,JJIz)

30

35

I

aI

i

I

'ffi:3-Q I3

;

StoppedStopped

auger a t 29 .5 's a m p l e r a E 3 1 . 0 '

G R O U N O W A T E R

rPRO ' : i -T he3. , . / -eacn r ' i iO b : - :e r I rvesC iss : . ] .On t cc o f IEST EcRtNG NO. t s - r6JOB NC._E8-Z4S8ADATE | ?_r6_87

''-' | ;: coj;i

o

at o: o

O J

ac€o

ac

aq

€o

- : !3-- E:i;; 4 +d:=

: t

C -a a

o a

r iO J

-.;: .E ou | .c 7i :: Uo a= s

Co

c o

! sa ' :

S .? Jt u

p16 1yp6 CME-55E o R r N G r V e esuRFAcE euev . 6006. IDATUM Mine

RET^RXS vtsu^L cLAsStFtCATtOX

Il lt l

Il lt i

t - -I;V . -YLiAs 62 - l l - -

sl ight ly moisrhard

SAIIDY CLAYEY SILT wi.th sonef ine gravel, low plast ic icy,light brown

5

10

l5

20

(

2

o{sl ight ly sroiscvery dense

SAIIDY GRAVEL stch some silr,nonplastic, brown

moiscfirn

CLAY wich sone fine sand andgravel, oedium plasticlty,brown

GRAVEL A}ID COBBI.ES--j //t '-s.5o/-4j: i____L-:Ll

r--- '/ l :uoisthard

GMVELLY CI.AY/CI.AYEX GMVELwith sone sand, 1ow plascic-ity

30 =r=,

35

Stopped auger a t 30 .0rScopped sanpler ar 30.2'

Installed nonitoring well:B o t t o m o f p i p e a r : 3 0 . 3 tS l o t t e d r o : 2 7 . 3 'Pea grave l to : 26 .L 'Crushed bencon ice co : 23 .9 '

G R O U N D W A T E RsAI{PLE TYPE

A - Avger cuat ia l t . 8 - Elccl rcnelrS - 2" O.D. 1.38" l.D. rube roaote.l r - " . . O i 1 t 7 . . I n r f i h . < a a r t - -

' .^-2+SERGENT, HAUSKINS & BECKWITH

_ t _ffiI l n o n e I I-

t,ffi|,

l Q Q J f f T L ' . . . ; . , r r i r ' = . ' ' , - r e I r n " . - ' - ' 1 . . . n r

JOE NOt v v v l . r - . - Y 6 a a t v a ! v . : -

55

t*:;c9 o: o

O J

acEo

!A

aAEo

- : ;3s E

:i;; r€; : =

: t

C -a a

o e: i

O J

- t3 :; ou oa ?: -- Lil

o a= A

Go

o o

1 Sr ' l

: J> U

RIG TYPEBORTNG lypg 6k" Ho11ow Stem Auger

suRFACE eUev .DATUM-YI

REXARKS vrsuaL cLAsstFrcATloN

IIl5IIItoIIl t tIIl tol(j!I

30

35

,rr' "cH -weE,so f t

CLAI wich some sand andgravel, medium plascici tyto high plascj .c i ty, darkgrayish brorm

:ilt-..ii*:'j <z GP-GM

nr''. \./

ip i .As 47 8

I

\ s l ight ly noist\dense

\

SANDY GRAVEL wirh crace ofsi l t , predominantl l ' f inesand, Iighc grayi.sh tan

slightly moist,very firm

uolstfiru tonoderacely fira

CLAYEY SILTT SAI{D with traceto sone gravel, low Plastic-icy to nonplastic, lighc tan

CLAYET GRAVEL AND SAIID, wellgraded, subrounded' lowplastici.cy co oediun Plasticity brown

/o7j1 I :

slightly uoistto Doistvery firu

CRAVEL AIID SAI{D ttit'h soneclay, subrounded' low Plas-t ic i ty, brown

Scopped auger ac 30 .0 'Stopped saurpler ac 3I .5 '

noEe: atcempced to instal lmonitor ing wel l , benEsnitepel lets br idged within augerand caused pipe to PuII uP'wel l was aborted and PiPewichdrawn

I\Ia

S A M P L E T Y P EG E O U N O W A T E R A-9 E p - x I x O u n O ^ T E

none

S A M P L E T Y P EA - Avgcr Grrniogt . I - Elock ronclcS - 2" O.D. 1.36" l .O. lubc ronpb.U - 3" O.D.2.{2" l .D. tvbc rooelc.

L \ J \ t r v a r A - l I ) \ r { r f l \ f ( \ l \ r . e ^ e

ir' I ,,,a;:i

c

3 o: o

O J

aaEo

ag

agEoiifliii : ! | ; i

_ =: t: o( r ca ?: :: Uo a= o ,

Co

o o

a ' :€ r

= J3 U

p16 lypE CME-55B6RING TypE 6k" Hol low Scem Augers u R F A c E e l e v . 5 9 4 4 . 0DATUu )line

RE|rARXS Yrsu^L cLAsstFtC ttOx

5

10

15

20

(

30

35

I'C E

\ s o f tI\

SAI{DY SILT AND CLAY wirhroots and organics, low plastlcicy, dark browr

TX'At

84 /11 .5 " 15

CL-ML43 22

sl ighcly moiscto moisiverv firm

SAI{DY CLAY A}ID SILT wichtrace to sone gravel, lowplast ic i . ty, l ighr brown

sllghcly moistvery dense

CLAYEf, GR.tt/EL with sooewell gradeo, subrounded,plasci.city, tag, orange

sandlow

note: high augering resis-: tance on rocks froq 17t co I8uoved 12' east and continuedwith new. hole

=%= moistfirn

CLAY wlrh soue fine sand andgravel, low plast ic i ty couediuo plascici ty, can'.//,:

t .///., , . n . l Z 87 i 20 i

% I

I

t

S -69- -- ; - -.- --GI{ - sl ighcly moi.stvery dense

SAI'IDY GMVEL wich slighctrace of c lay, wel l graded,light tan and gray

Stopped auger atStopped sampler

30.0 'a t 31 .5 '

G R O U N D W A T E R

o E P T H I H O U F I O A T ESAMPLE TYPE

A - Aogrr cct tangr. 8 ' - Elocl :onp|rS - 2" O.D. 1.38" l .D. rubc ronelr .U - 3" O.O. 2.a2" l .D. tubi rooolc.

- ' - A=26r[$*]r SEHGENT. HAUSKINS A BECKWIIH

- l H l -

tV 'Bl t m**f tca.-EsG

i r R O J t L r . - = , . .

,Orng. I: i-20:.:eOAfE_

o E P T H I H O U R O A I ES^TPLE TYPE

A - Augrr Gutti.gr. I - Slocl rooolcS - 2" O.D. lJg" l.D. tobo rompb.U - 3" O.D. 2-a2" l.O. tobc ronclc.

\ v \ J v a r t - l & \ r , ( . t f l \ , t N V o ! - ' . ,

L-?7I SERGENT. HAUSKINS & BECKWTTH

i,,r € r

3 :3t ! a

: c .c a aJ A C

c9

33 o. c

O J

ac€c

aA

aeEo

- i !3s E

ii;i 3€i : !

s

: iC -a a

o a- . .L 4

O J

- ;! r: a( r ca :i :

: ui :=o .

Ca= :

c o

a :3 r

? Jf ( J

R I G T Y P EB O R I N G T Y P E -SURFACE ELEV.DATUM

RElrARXS vrsuAL cL SS|FtCATtON

:-:--

:- : .; l i

I , t il l lt l t i l l l

OT DRILLED

i It i , ! i

I II

( '

(

I

F! l

II

i t ,

-l i

r l

G R O U N O W A T E R

coaaEcGcoltc€{ cKeG

I NO.--E8-Z=203,54DA T E i ? - 1 4 - - c 7

i r ' 'EEl i: : l c o I . e

\ \ - IC ' I J

i- j l;;aAEc

ac

aAEo

EJE:i;i f €; : =

.i

: t

C ra a

o a; i

O J

_ ]: iE ou oa :i a: ei := G

Co

o c

a :

? l= ( J

p16 1yp6 Cl9-55

BoRtNc lypE 6L" Hol low Stesr Augsr

S U R F A C E E L E V . 5 7 6 8 . 9

ortuu Mine

REfTARXS YISU^L CLASSIFICATIOX

U

)

0

5

5

I

r3fr?

. t q . v !

, L J -

sl ight ly uroiscto moistvery firnto hard

GRAVELLY CLAY wich some sandlow plastici.ty ro mediumplast ic icy, brown

note: color change to l ightgraylsh brorm and whire at 8t o 9 t

- -' , %%y i--:-slighcly moistto oolstvery firuco hard

CLAYEtr SAI{D with Erace tosooe gravel, Iow plasticityto mediuu plasticity, brownrith sooe light grayishbroqm pockecs

t / -: l

vt ^a .-.-l ) l{ J e . i a

I

i . i l i I! l I

II

)aJ

\ !t- i

4 SC

ffiT_--..t{-

I

I

!

II

Stopped auger ac . 30 .0 'S topped sampler ac 30 .8 '

Installed monicoring well:Bo t tou o f p ipe ac : 30 .0 fS l o r r e d r o : 2 7 . O 'P e a g r a v e l t o : 2 6 . 0 'Crushed benton ice to : 24 .O

AI{P TYPG R O U N O W A T E R

!0

|0

r5

A - Aoger cuningi . I - Elcc l ronpleS - 2" O.D. 1.38" l.O. rubc rcosh.U - 3" O.D. 2.a2" l.D. tubc rooelr.- - r r ^ ^ . L _ _ r r , J < L - r L . . _ ! -

A-28SEFGENT. HAUSKINS & EECKWITIit,w),

- . - m. wggo.. {rtffts|* . 5^ .t . EAr lst cfr . e! ,.lo

! P R O . r s ' - r - - - n l L : 1 , ' : . :'JO8 NJ. E87-203E4 DATE

o E P Y H I x o u n I o e t eSAMPLE TYPE :

Lg ( i o r r e5T Ec& . lHG No . p -a r

A-29SEFGENT, HAUSKINS & BECKWITH

(' I ,i, l =ajjjl;;

a

A

Eo

ac

aAE0

- : !t€ Eii',; 4 ii3=

C -a a

o e

- 4O J

- ;5 .: ou t co Z: ::(,o a

T C

cc

o o

1 3a ' :

5 r

: J> U

RIG TYPEEORING TYPES U R F A C E E L E V . ,D^TUM

REHARKS Yrsu^L cLASS!FtCA?tOx

r lF

Fl l- : r

F

IIlI

r ! l' -'--

G R O U N O W A T E R

A - Aogre cuftangr. 8 - Elcal :6nelr : l<-.}tS - 2" O.D. 1.38" l .D. rubg.ronolr. ; l : f i^| .U - 3 " O . O . ? - 1 2 " l . O - r u b c r o a o l c - l V O l l

: 5 t, a o. : : :C C 'c a a

U C E

Rlc rYPE cME_55

E O R I N G T Y P E

. L e t e t l t > ; E O R I H G N O . b - z l

SURFACE CUEV.

CLAY, sooe fine sand, craceof gravel, uedium plast ic i . ty,light brown

20

(

i i

SATPLE TYPE A-30SENGENT, HAUSKINS & BECKWITH

aa

aaEo

_! i3s E

:i;i 3 €i : !

C ra a

o a- da i

O J

_ t: l; ou o

o - -: :: ( ,t ::o .

co

o o

a :€ r

T J: U vlSuaL cLASStFtcATtOx

l q

ML-CL

moisc t,osl ighcly moistf i rn co hard

SILT AIID CLAY crich some fineto mediun sand and trace ofg ra i re l , low p las t i c i t y , darkbrown

i i r,..'s'-sr ', --i-z2.j--Gc' sllghcly troisthard

CLAYEY GRAVEL nirh sone sand,low plast ic i ty, brown

%moiscfiru tovery firu

slighcly aolsrto aoistvery firuto hard

CLAYEY SAIID with sone cotrace of gravel, subangular,predonj.nantly fine to uedLumsand, llght gray and whi.re

Stoppe i l auger a r 30 .OlStopped sanp ler a r 30 .3 f

Inscalled monitoring well:Boc tom o f p ipe a t : 29 .9 'S l o t t e d t o : 2 7 . 0 'Pea grave l co : 26 .O 'Benton iLe pe l le ts to : 24 .0 '

G R O U N O W A T E R

A - Aogcr cufrrng3. B --8tocl ,o-pl. , fFb,5 - 2" O.O. 1.38" l .D. rubr rcostr. : l l ){^|U - 3" O.O. 2.!2" l .D. rubc :oaotc. lY_6ll GrE@ry{ a* - rG

. loa No. F87-i03i OT TEST BORING NO. B -23-t Q G

XJA- - -rj8-* -

R I G T Y P E

EORING TYPESURFACE ELEV.D A T

SA^{PLE TYPE

o{E-55co

o o

j €a ' :

: o

> 9

l5ItJtoIIIttIIi tol

tr I

s; 33

sERcENr. HAUSKTNS r ,..**fiit to

r C r

3: gt 3 c. : : - 'C C 'o a a

U G C

aa

JcCo

- : it s E- : o

i i ;; r iO O -

o- I !

: t

C sa a

o c- i

O J

_ =: .E o

U Or ?i a: U; :ro . YlsuAL CLasslFtcATtOx

VAs. 16X U JO. .

molst tosl ighrly moisrf irn to hard

CLAT wich trace of fine sandand occasional gravelr f l€d_iuur plast ic i ty co high plas_cicic)r , brown and E.an

slighrly moisrvery firrnto hard

CRAVELLY CLAY wirh sonelow plastlcity co mediumplast ic icyr tan with brown,orange and light gray

very noistco moistmoderat ley f i rnto firur

CI"AY wich some fine sandand occasional gravel, med-iun p las t i c i t y , b rorm

S cern

q q n / < < r l- . J v t J . J

| - A.ugrr cuniogr. 8 - gtoct ronplc ,[T?fs - 2" o.D. 1.38" l .D. tsbo ronote. - t -Lr t .

u - 3 " o .o .2 . r 2 ' , j . o . r vbc roao r r . i l , / ' 8h

a4

aAEo

- i it€ E:ii; 3 ii : !

: t

C -a t

o ca i

O J

_ =5 .: o

l | €a - -: :: vi ::o .

Co

o o

a ' ;

t J3 s vrsu L cL sstFtcATtox

!

I CL

50 /5 .5 "

- ' - - M L "

X. sLsolz-s:: ' :-lJ:-_

-' : i ! i ! a

noist wich sac-urated zonesst i f f to hard

SAI{DY SILT AI'ID CLAY, lowplast ic icY, brown

note : sanp le aE 54.5 ' wassacurated (but no water ondri l l rods)

not,e: dri l l ing resistancealternates froo very highto moderate frou 59' co 67 |

%moist tosaturatedhard

CI.AYEIY GRA\IEL Al{D SAI{D ' sub-angular, well graded, lowplasti.city, tan' orange andpink

Stopped auger ac 74 .21Stopped saup ler a t 74 .71

note: at tenpted to instal luonitori.ng well; unsuccess-full because bentoni.tepel.lecs bridged wiqhinaugers

L \ r \ , \ , / f r . A r t D v A l n l \ r N \ l o - - J

p16 lypg cuE-55BoRtNG TvpE 5k" Hol low Steu AugersURFASE e lev . Approx ina te ly 5920t5911gM ltine

' : r

G R O U N O W A T E R

O E P T H X O U R O ^ T ESAI{PLE TYPE

A - Aggor cun iogr . I - S loc l roap lcS - 2 " O.D. t .38" l .O. tubc :onp le .i l a . . A r ^ . , , ! - - _ _ - t -

A-3 IBSERGENT. HAUSKINS & BECKWITFi

a f f \ v , - Y I +

JoB NO. E8; -20 : i$ - : . DATE t2_n5_87, . - - r > y 4 . . \ \ t r r t V o

i

I :5 tt c o

: : :C C 'o a a

U G gI€

3 o: c

| , J

acEo

aa

acEo

- i !t s E

i i ii 3€;:t

| - ;

,i | :i;l | :jr - i I i :

o J | : c

co

o q

a Sa :

E J3 U

Rtc rYPE cME_55

EoRrNG l vp g

SURFACE ELEV.orruM

REl|^RXS vrsuAL CL^SStFtc T|OX

zFF very moistmediun st i f f

CLAYEY Stu\D wich some gravelpredorninancly fine to med-iun sand, lo r l p lasc ic i ty ,dark brown

5

l0

t5

20

(

I

3C

35

40

%X' 30%,Xu 24 cs

- .V Y',- .- --uu-jr-.'---

noistmediun dense

SAIIDY GRAVEL with crace ofs i l t , subroundec i , we l lgraded, nonplast ic, tan

moistuoderately firnco firn

SA,NDY CL{I with trace ofgravel ly zones, predominant-ly f i.ne sand, medium plas-t ic i t ]" Ean

\ noist

\t"'

CLAYEY GRAVEL with some sandlow plascicicy, tan withgravel zones

moistfiru

SANDY CIIY wicb scatteredgravel, neci ium plast! .c i ty,brown

note: approximately 5"gravel la1'er ac 27'

noce: alcernat lng clay anci.gravel zones frorn 33' Eo 421

CLAYET GRAI'EL wich somesand, 1or " ' p ias t i c icy r g !€€o-ish brown

moisEver;- f irnt o h a r d - A -

* H t Q J o ' ' o '

\S c o p p e d a u g e r a c 5 0 . 0 'S topped s : rmp ler ac 50 .4 '

G R O U N D W A T E RSA^{PLE TYPE

A - Augrr curt ingr. I - Bloc! ronplqS - 2" O.D. 1.38" t.D. rvbc ronolo.U - 3" O.O. 2.12" l .D. robj roaote.

SERGENT. HAUSKINS & BECKWI]H

I Pi \vJ:L I

JO8 NO. FF7-? t i 8A OO*

GROUND WATER

tOG OF TE5T PII NO. TP. I

Elevario

Backhoe Tyot CaterPillar 235 :-

16g61;6n Pad No. l , See Site planoE?n{ HOUR OAIE

not encounE red

SILTY SAI'ID AI.IDsional cobbles,

GRA\IEL, gravel to 2'f , occa-nonplast ic, brown

l !'|,

SNMPI.E I.:IPED - Dish:rbed BuIk Sar.ole- n t - ! . _ L - J ^ _ _ t t B _ _ F _ _ .

SILTY CLAY, 1ow plast ic icy co medium plasr iciEy, t race of gravel, dark brown

CLAYEY SAllD, predonipantly fine, some graveloccaslonal cobbresr low plast ic icy

CLAYEY SAIID A]ID GMVEL, occasional cobbles,low plascici ty

End o f r es r p i r ac 22 .3 '

I e-3:G2, SERGENT. HAUSKTNS & EECKWITH

r PROJEL I

Backhoe Type CaterPillar 235 -

Lo..rion

Elevat ion Snen (!)

DatumIIIIIII

SILTY SAl.lD, fine, nonplascic, brown

SILTY SAI{D, sone gravel'nonplasti.c, light brown

If-r

-1'A

occasional cobbles'

SA},IPLE TIPED - DisUrrH Btrlk

A-34SERGENT. HAUSKINS & EECKWITHSaple

Elaa Sann'le

L U g V r l c l l r l r l \ \ J .

O€PIH HOUT DAIE

noE ncounEe ed

oi s'l:SILTY CL,{Y wich sone sand and trace ofgravel, low plascicicY, dark brosn

SILTY SA.tlD, fi.ne, nonplastic, brownoooo

SILTY SAI{D, fine, nonplasti'c, light brown

It?qi .

E n d o f t e s t p i t a r 2 2 - 2 '

O€PTH HOUT o^lg

n . l r Lcounte ed

f | 1 \ r r J i - e | - -

JOB NO. EE7-2038A 9ATE 09-24-87

SAMPI.E TI"E

LOG OF TEST ?IT NO.

Eackhoe fype Caterpll lar 235

1o."1;on Pad No. 1, See Sire p lanGROUNO WATER

Elevatio

! - Pi"ur"bed tulk Sapleq _ h s - L . - L ^ , < r _ t i h _ _ a - _

SILTY SAIID AND GRAVEL, gravel !o l,', occa-si.onal cobbles, nonplastic, brown

SILTY SAIID ANDplast ic, broun

GRAIfEL, some cobbles, non-

A-35SERGENT, HAUSKINS & EECKWITH

Site Topo

YtSUAt Ctast;tcAtroN

CLAYEY SILT wich sone sand and crace ofgravel. low plast ic i tv. dark brown

SAI{DY CIAY, uediuu plastj.cir}, Iighc brown

SILTI SAIID AIID GRAI|EI", gravel ro 3',r occs-sional cobbles, .nonplastic, browr

End o f tes t p i t ac 24 '

I

- \s -Ar

GROUNOWATER

L \ - ' L , U f l t r j l f r t N \ J .

SITLY SA\!D Al[D GRA\IEL, gravelcobbles, nonplascic, brown

Backhoe fype CaterPillar 235

to."tion

Elevat ion 5Qa0

Dalum

Iia

I

to 6" withe

l0

(

SILTY SAND ANDsional cobbles,

CRAVEL, gravel to 2", occa-nonplastic, brocln

(

')

SAMPLE TIPEI-FaD - DisturH Bull< Sale

! - Dlsb:rbed Srnat'r eai Sanofe

A-3(rSERGENT. HAUSKINS & EECXWITH

o€Prx HOUI OAIE

n . | t n a n t t n l ' a ' e A

CLAIEY SAI{D, some gravel, medium plascicicy,dark brown

SILTY SAND AllD GRAVEL, gravel co 4',,occasional cobbles, nonplast ic, l ighc broun

End o f tesc p i r a t 22 t

JOg NO. ;S7 -? r "?8^ l DA IC Oq-2q - : ;: - - -

Backhoe Type Cateroillar 235

Lo."tion

Elevati 6010 (1 )

Datum Si te Topo

WATEROEPIH HOUR OATE

not Incount( red'.1 :, 1; vrsu^t cl^ssrfrcAltoN

CIAY wi.th some sand and gravel, mediumplast ic i ty, dark brown

SILTY SAltD, fine, some gravel, trace of claylow plascici ty, l j .ght brown

SILTY SAIID Al{D CRAVEL, gravel to 5", occa-sional. cobbles, nonplast ic, brorrn

CLAYEY SILT, traceplast ic i ty, l ight

to sotre f i.ne sand,brown

Erid of test pic at 23'

SA},IPIJ Tl"ED - DisUrrH Bulk SryleS - DisUrrbed Sralt Bag Sarole

A-37STRGENT. HAUSKINS & BECKWITH

I-ffi:rGrr6@G6{ CS{EG

OEPIH HOUI DATE

noc lCOUnCe ed

.l

{

IIlII

I

rx l rJ c ' - I

JO8 NO.rcc oF TEsi PtT NO. : t -o

Beckhoe ttp"

Locafion

El"r"tio.r . r r r r ra S i te Topo

09-24-8;

GROUNO WATER

SILTY SAI{D ANDsional cobbles,

GRAVEL, gravel to 5", occa-nonplastic, brown

SILTY SAI{D A]{Dsional cobbles,

GRA\aEL, gravel to 3", occa-nonplast ic, brown

,'fI

?II

bI

ir

End o f ces t p i t a t 221

SAMPLE TPED - Disb:rH Sull( S41eS - Disturbed SreIL Bae SanDle

A-38SERGENT. HAUSKINS & EECKWITH

I-m,

= 5o :

: :'a:f r,,

SAI'IDY CLAY wich occasional gravel and cobblehieh plasEici tv. dark brown

! f X L / J l - l - - ' - : r : - -

JOB NO. FA;-?niRA OATE 09-29-87L U G ( J I I E 5 i P I ' N O .

Backhoefype Cateroillar 235Pad No. 3 , See S i te P Ian

g1",r"1;6,., 5890 (t)

p61urn Site ToPo

SILTY SA}IDYnonplast ic,

GRAVEL, occasional cobbles,light brown

GROUND WATERO€PIH f{out OAIE

noE 3ncount red

vrsu^t ctastrK^troN

SAIIDY CLAY with scattered gravel and.cobbleshieh plast ic i ty, dark brown

SILTY SAND, predouinantly fine, nonplast,ic,brown

End o f Ees t p ic a t 20 .21

SAMPIJ Tt"ED - Disturbed tsulli SanpleS - Distrrbed SnalL Bag Sanp1e

A-39SERGENT. HAUSKINS & EECKIYITH

I-ffi:,

JOB No. E87-2038A pals

GROUNO WATER

SAI,{PLE TPED - Disarrbed BuIk SaroleS - l . \ i< { . r rh6 / eq l1 E l - ' - ( : * ]o

tCG OF TESI PIT NO. r l - o

Eackhoe fype Caceroillar 235

Lo..tion

Elevat ion 6l 5OSice Topo

I

-1"4'A-40

SERGENT, HAUSKTNS & EECKWITH

DEPTH fiout OAIE

noc 3ncount red

SILTY CLAY, low plasticicy ro medium plas-t ic i tY. dark brown

GRAVELLY SAI{DY CLAY, high plasciciry, brown

SILTY SAIID AND GRAVEL, gravel co 3,', occa-sional cobbles, nonplast ic, brown

SILTY SAI{D A}lD GRAVEL, occasional cobblesand boulders to 3r, nonplast ic, brown

SILTY SAI{D AIVD GMtfEL, rrace of clayr Don-plast ic to low plast ic i ty, brown

GROUND WATERDEPIH HC'UT OATE

not t lcounte :ed

JOB NO. ; :A?_?.^, iRA oare 0g_29_97

SAI,IPLE TTPED - DisArrbedS - Disturbed

SILTY SAI{D, mediuu fine,nonplastic, brown

Eackhoe Type Cateroillar 235

tocarion Pad No. 2. See Site Plan

ElevarioSite Topo

trace of gravel,

IBr: lk Sa.oie f f i ,SrnaIl gal Sarole

-L,/al'

A-4 ISERGENT. HAUSKINS & BECKWITH

vlsu^t ct^Ssrflc^rtot{

CLAYEY SANDY GRAVEL wi.ch cobbles, Iowplast ic i t .v to nedium plast ic i ty, dark bropn

SILTY SAND AND GMVEL,plasr ic, l ight brown

SILTY SAND AIID GRA\IEL,plast ic, brown

gravel to 2", non-

E n d o f t e s t p i c a t 2 0 . 3

* .v<4du ' * *3G

IOG OF TE5T PIT NO.JOB NO. ,E87-203SA na16

GROUND WATER Backhoe Type Cateroillar 235

!lr lil

SILTY CLAY, r tace of gravel, nedium plasr i :_ity, dark brown

SILTY CLAY wich some fine sand, trace ofgravel, high plast ic ir j , brorrr

SILTY CLAY, trace of gravel, low plasrlci.t3,brown

SILTY SAr\D AllD GM\|EL, nonplastic, brown

OIPTX HOUN DAIE

noc encount rred

SIMPLE T1PED - DisturH B:lk SaoleF

I

-1"4 SERGENT. HAUSKINS & EECK\{ITfi-i:

v'Ia

_o

tgg NO. ;s7_?i ' t i i i Oafe 09_30_97

GROUNO WATERO€PTH rKtut OATE

noc encount :red

Backhoe Type CacerPillar 235

1o."1;o,., Pad No. 2, See Site Plan

E1.r"116n 6030 (t)

Datum Site ToPo, o

o

12

SAMPLE IIPED - Disturbed BuIk SaoleS - DisArrbed SnaMag Sarole

I-m

vrsu^t ctastftc^noN

SAl.lDY CLAY, sotre gravel and cobbles, highplast ic icy' dark broun

SAIIDY CLAYEY GRAVEL' gray cobbles, nonplas-tic, lisht browa

CI,AYEY GTAI/EI.LYlow plasticity,

SAI{D, occasi.onal cobbles,dark brown

End o f tes t p i t a t 13 .6 '

!r sERGENT. HAUSKINS & EECXWIA-43

JOB NO. Ec7-3036.; DA1E

GROUND WATERO€PIX r|out OAIE

noE ncount€ :ed

t v ! - l - , t r C J l l - l t l \ \ r f .

Eackhoe Type CaterPillar 235

1s661;en Pad No. 2. See Site Plan

g1Ey31;en 6050 ( i )

pulr' '. ' Site Topo- . :- I : t'v"-

SILTI SAIID, Erace tocobbles, aonplast j .c,

sone gravel, occasionalbrown

%SIMPLE TTPED - Disbrrbed BuIk SaoleQ - l. l iaJ-rrr€J eEl1 O-- So;f o

SAI{DY CLAY, considerable siLt , some cobbles,low plast ic i ty, brown with nott led white

A-t+4SERGENT. HAUSKINS & EECKWITH

I-m,

GRAVELLY CLAY wich sonecobbles, low plast i .c i . ty,

CIAYEY SAIIDY GP"AVEL, occasional cobbles,low plast ic i t .v, brosn

! . rJL\.1 ---

I NO.;87-20:Si DAT€ I 1 -20-87

GROUND WATERD€PTH HOUN DAlE

none

SA/vlPt^E WPEB - Undisturbcd Elock SamplcD - Disturbed Bulk Sarnple

L L / \ , U | - t ! , ) | f l r N v l .

Backhoe Type CASE 580 C

16661;e6 See Site Plan

Elevati: ( zso, l f i n a

Datum "-"-

t e s t p i t a t 9 . 0 r

A-45SERGEI{T. HAUSKINS & EECKWITH

Imt

vrsu^t ct^ssrflc^noN

very moistso f t tonediun sriff

CLAY rdth some sand, nedium plascicity, darkbrosn

uote: several roots to 8" depth

moistvery sri.ff

SNDY CLAI, wi.th sone gravel, nedium plasticity, lighc brownish gray

note: grading to clayey gravel and sand at,5.5 '

Dote: grading Co sandy clay, uedium plastlc-ity

JOB NO. ;8;-20354 crie l t -20-t7 L U ' J ( . l l l i S r f l l N O . L ) - a -

Eackhoe Type CASE 580 CSee Slte Plan

GROUND WATERO€PTH fioun OAIE

none

SAAAPE TYPE8 - Undisturbcd Block SamplcD - Disturbed Eulk Samole

Elevation

End of test p i r ar 9 .5r

SERGENT. HAUSKINS & EECKWIT#-46I-FA

l:, It

7%

very noi.st to 6"thensl ighr ly noisrf irrn

SAIIDY CLAY with r,race of gravel, low plasric-i ty, brown

note: snal l rooEs t0 8" depth

SILTY SAI.ID with sone fi.ne gravel, wellgraded, nonplastlc, browa

note: Eore gravel below 7.5'

l . o1 : O

.(s3

! l

)8 NO. E87-2038A DATE r i -20-5 7

GNOUNO WATERO€PIH '{OUR OATE

none

SAAAPTE WP€B - Undisturbed Elock SamplcD - Disturbcd Eulk SamPle'

Backhoe Type CASE 580 C

tocati See S i te P lan

Hine

I-ffi:^

SILTY CLAY with sone fine sand, low plastic-i ty co medium plast ic i ty, al ternat ing darkbrown and brown

note: srual l roots co 3" depch

uoiscsof t touediuu stiff

CLAYET SILT wich.soue fine sand' mediuu ptl.cityr dark brown

very uoistsoft

SAI'IDY CRA\IEL lrith slight trace of clay, sub-rounded, well graded' orange-brown

uol.sguedluu dense

E n d o f t e s t p i t a t 1 1 . 5 r

SERGENT. HAUSKINS & EECKWITH

JoB No. iE7-20384 DaTE

GROUNO WATERO€PTH XOUT OAIE

none

SAAAPTE WPEB - Undisturbcd Elock Samplen - h : . . . . ,L -J o , . l t , < 'a^ f -

TOG OF TE5T PIT NC.

Backhoe Type cAsE 580 Cc a a $ i g s P I a n

Locaf ion ---

.:ao. o6J

SILIT GRAVELLY S&\D,to coarse, nonplast ic

pre<iominantly mediuuto low plast ic j . ty

End o f tes t p i t aE 12 .31

I

-1"1'A-/r8

SERGENT. HAUSKINS & BECKWITH

moistso f t tomoderately firm

SILIY CLAY with sone sand and occasionalgravel, 1or, ' p last ic i tv to mediurn plast ic iry,alternacing brown to dark brown.

note: snal l . rooc,s t ,o 5" depch

GRAVELLY CLITYEY SAI{D, lowbrowu

p lasc ic i ty , dark

note: less gravel below 7'

slightly moisrmoderately firn

uoistmediun dense

JOB NO. FR7-?O?8A DaTEL 9 v . U t _ r E 5 t P l l N U . v ! - - J

GROUND WATER Eackhoe Type CASE 580 C

r0(

r5

O€PTH HOUi I OAIE

none

SAAAPIf TYPEI - Undisturbcd Block SamplcD - Oisturbed Bulk Samolc

1o."11on See Site Jlan

Elev

SAIIDY SILT, 1bw plasticity, orange-browr

End o f tes t p i t a t 12 .3r

I

-ffi SERGENT. HAUSKINS & EECKWIT'f-4,

hreturediun sriff

GRAVELLY CLAY Al.lD SAIID FILL, low plasricicyto aedium plasticity, orange-brown

,%

aoistuoderat,ely flrn

SILTY CLAY wlth somegravel, low plasticicybrorn co dark brorlrr

note: roocs f rou 1.5 '

fine to nedium sand andto eed ium p lasc ic i ty ,

t o 2 . 0 ' d e p t h

uoistmoderaLely fi.rn

moderarel,y firaSILTY CLAY wlth soae flne sand, medium plas-tlci.ty, brown

I NO. E! i -1C36; palg i l -20-87

GROUNO WATERO€PIH I{C'UR OATE

none

SA'IPTE WPE8 - Undisrurbed Elock SamplcD - Disturbed Bulk Semple

Eackhoe T cAsE 580 c

1ss61ie6 See Si te Plan

Elevati

Da

End of test pi t at 10 |

A-50SERGENT. HAUSKINS & EECKWITH

I-ffi:,

vrsu^t ctastfrclroN

ooist toslightly moisrfirn

SILTY CLAY with sone fj-ne sand, low plastic-i ty co medium plast ic i ty, l igrh grayish b

note: snal l roocs to 5" depch

sllghtly ooisrvery flrn

CI*AY wich some sandr gravel, and occasionalcobbles, uediuu plasticicy, Ilght grayishbrown with white streaks

uoistvery firu

CI.AYEY GRAVEL AllD SAlCI, low plasticity, lighbroun

oo.glnll cGcFCo-ca c.a..ccr3

slighrly uoistvery firn

SILTY CLAY with some sand and rrace of grav6low plasticicy, brown

note: sroal l rooEs to 24"

note: gravel ly with cobbles below 3r

slighrly moistnedium denseto dense

SAI{DY GRAVEL eith soue sllr, subrounded,plast ic, browr

SILTY CLAY with crace of fine sand, low plasticity, brown

CnOUr.rO WAIER Backhoe Typg CASE 580 C

o€Prx HOUE OAIE

none

SATVIPLE fYPEI - Undisturbed Block SamplcD - Disturbed Eulk Srmple

Locali See Site PIan

E n d o f t e i t p i t a t 1 2 . 3 '

I-ffir SERGENT. HAUSKINS & EECKWITHA-51

,OB NO. ES7-203SA p46

(,

I I -2r-a7

GROUNO WATERD€PTI{ lrout OATE

none

t v g 9 l l L J r I l a r ! v .

Eackhoe Type CASE 580 C

Lo.atior,

z{, . o. : o

I l i n aDafum

SAIIDY CI.AY withorange-brown

soEe gravel, low Plasticity,

vrsu^r ct^lslflcAtloN

lDoistmoderately fj.ra

SILTY CLAY with sone fine to trediutr sand,plascici ty, dark brown

note: saal l roots and organics co 4" depch

not,e: color change to brown to orange-browra r 3 . 5 '

uoistuoderacely firu

SANDY SILT with soue gravel, low plasti.cicyto nonplastic, orange-brotfir

Doi.stmoderately firn

End o f t es r p i r a r 10 .2 r

SA,lPtE TYPEI - Undisturbcd Elock SamplcD - Disrurbed Bulk Samole

A-52SERGENT. HAUSKINS & BECKWITH

I-m,eoalE GE<tTEOC4 Cr€.aCC

tJ;; No- :r -:0384 pAiE lI i t-'s'

r E o

3 :3' t a a

: i :c c .o a a

u g c

aa

I

\

nrc rvpeSBoRtNc TypE 6L" Hol low Scem AugerSURFACE ELev. 5577 ' (+

DATU

SAI{DY CLAY, predourinanrlyfine co aedium sand, lowplascicity, dark brown withroots and organi.cs

sl ight ly moisEhard

CLAY wich sone sand andscattered f ine gravel, lowplasticity to nediurn plastity, browa and can

Stopped auger at 10 t

S topped sanp ler a t 11 .5 f

note: dr i l led tvo 3.S-foocdeep percolation test holesapproxj.nately 20' East and20 ' West o f PB- l

G R O U N O W A T E RO E P t H H O U R D A T E

none

SAI{PLE TYPEA - Augrr cuni6!r. I - Elocl rcnploS - 2" O.D. 1.38" l.D. rsb. rcnrlo.U - 3" O.O. 2.a2" l.O. tubr rmplr.T - 3" O.O. i lr ia.rclled Sholbv rubr.

I SEFGENT. HAUSKINS & BECKWITI{

coatrFS oaolto.cr cr€..aCt

39 p6. ic7-29?8a9a1s 12-21-87RIG TYPE clrE-55BORING TYPE 6L" Hol low SEem Auqer

a,l.z

2

SURFACE ELEV. 5617 .9Co

c

aca

totC

a

cc

ac

D^TUM-

t t

! . i: .

G R O U N D W A T E R

O E P T H I{OUR OAtE

none

s TPLE TYPEA - Auger cuniagr. 8 - Slocl ronplrS - 2" O.O. lJ8" l .D. tobe rcnclo.U - 3" O.D.2.42" l .D. rcbe rcnglr .T - 3" O.O. rAio-rcllcd Shclbv rubc.

A-54SERGENT. HAUSKINS & BECKWITH

VISU^L CLASSIFICATION

SANDY SILT AND CLAY withseveral roocs and orgaEics,low plast ic i ty, dark brown

GRIVELLY SILTY SA:\D, wellg raded, nonp las t ic , lan ,light gray and orange

o v. \ t - - F

: As- s6-

. l

; s-28 l0---

CLAYEY GRAVELLY SAI\D, sub-rounded, low plast ic i ty,orange brorn

Stopped auget aE 8 .5 fScopped sanp ler a t 9 .5 r

no te : d r i l l ed two 3 .5- foo tdeep percolat ion tesc holesapProxiuBce1Y 15f north and15' south of PB-2

oo.llEa oao|to-r cxncclla.e'ar.l\G5r. {r.O.aE./€. 5^.C. !\t lsA Cn.O' t O

XO EST-2038eOel= cuE-55

' : !: 3

-. :

o

1 o= o

0 J

acE0

6

aA

aAEo

3 j i:i;; 3 io o =

; : J

: 6a a

o a- i; i

O J

_=E}: ou oo ?: a: Ut := G

C- 3o o

r ZS r

t J3 U

RIG TYPEBoRtNc 1yp6 6k" I lo l low Stem Auger

S U R F A C E e U e v . 6 2 6 3 ' 5

DATUM UiNC

REX^R(S vttuaL cLatslFlcATlox

[loistdensevery

E O

dense

GRAVELLY CLIYEY SAND; sub-angular to subrounded' Iowplast ic i ty ' tan co orange

noce: drill lng began ac a

depth o f 3 r . See no te be low

0. !t fi/^y'o1iI1t

i

) < c q sZ J Y

) l-"- '6/,xyY: ^ 2 sc^/ \ a, .te

\i7< ?X

0-

l_rl=l-

l:r:l-l-

(

..-' r l i

: ! i, : . : i l

i r ! r l il i l l l l:-. ! i i a!l i r i i ir r . t l . t

: ;: l ir . . l li ! ! l_:_i-

i i : : ! l: ! ! l. ; : i i

Soi l tyPes Ln boch 4' Perco- |lacion borlngs are consis- Icenc wiEh that of the uPPer I4 t of the classif j.cation

Iboring

Iuoce: dri l l ing Placforn was Iplaced in a 3 fooc cuE. Sur- 1iace soils above Platform Iconsist. of:

I1.5t claY; wich uinor amountiof gravel, mediuo elascicicV'ldark brown

I1.5t gravellY cIaY; some Isaud, low PlasticitY' tan Eol

-orange I

note: drj-I led two 4-fooE Ideep Percolation tesc holes IapProxi.oatelY l5r norEh and I15 | souch of PB-3 |

III

I

FI : l I

l=t--_t-lt--t-It--t - - -

t--t---t-

GROUND WATER SArrPTErYPE - r - f . 55A - 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.

a a v , - - - : : - . . : - - : _

lOg NO__9S ;-z'- --.r aOl; = ! 2 - 2 9 - 8 , 1*-ss!. Id 'i€g

c

I

9 o: o

( , J

ag

€o

aA

JcEo

:ii:i;; 3 €f :=

? t

a oo a- ia 5

O J

=3 :; ou cr ?: :: U; :I G

Co

o o

a ' :

: l) U

RrG TYPE uf t - r r ,BoRtNG lypg 6t" Hol1ol t Scem Auger

S U R F A C E E L E V . 6 1 4 5 . 0

911gM Hine

€ : :. i E .l r a at a . E

RET RTS vrsu^L cLAssrFlcATlox

. 5

very moistmoderalely f i rnto fi.rm

\

SAI{DY CLAY with some gravel,

low plasticity t,o mediunplascj.ci.ty, dark brorm toorange

noce: sharP color change in

clays fron dark brown too r a n g e a c 5 . 5 '

='z,Xr- io - -21--

t0

.7/t:7/ lv

- .-

---!--- /,/,/. x s g5 / 1I .5" I moist

firu\ ro hard\

GMVELLY CLAY; uinor anountsof sand, medium PlasticitYrEan and orange

---- -_-.;---i-: ! l -

r!

(

l-=l-

trl-t---

t----:l=Ft--:

trl=Fl -

i i

l i

I I

i

q D , - i +

Scopped auger a t 8 -5 '

S topped samPler a t 9 '11"

note: soi l tYPes in boch 4l

percolacion borings are con-

si.stent with uPPer 4' in

classi f icacion boring

notb: dr i l led two - fooc

deep percolat ion test holes

appioxiuaceJ'Y 15' east and

15t west o f PB-4

S A $ P L E T Y P E A-56G R O U N D W A T E R

A - Acea cctr ingr. 8 - 8 lo6! rcoPlr

S - 2" O.D. 1.38" l .D. lubr rcnplr .U - 3" O.O. 2.a2" 1.D. tubr rooplr .t r . . ^ ^ . \ i - . . - - l l - l < l - l \ - . , . L -

SERGENT. HAUSKTNS & BECKWITH

a.tLr . tLcs.,r . rtilloJc ' 35^ tC . Ell !.{E Cfr ' a' ".*)

( i

oI

K4 0'l{

ct t$}h'o.

TEST WELL No. I

art^! 1\tt. uaa.atLa aoyr63 91.COaOJS .iO 3r.O. ..t,Orrr Clactt laaoi

TEST WELL No. I rcorurrNuEDt

acctor.trratc. taaof.r rttLy rrottfTttQtrnyav. tiot|! ro.ar|.f rrOC arOC3''G?ctrll?tY. rca^tc|'t tc. l?xctt o.q-aYC. {O{.:t tO 0.rr a!!,ttx gr.y

ll?Cl LtrGL rt rg.a tfF O. |-D-r,

Cgtrtfz'lg €a.gEl r.EOt ra o|^rgaalobr. SlLlleu.rtzt' la €r.!c5 !Ea? a.l lota rolrttilttf ca.ca {cotur cr.|<fa t - iCu.rt:tt[ CI^OES C|'t^r..l. t.rtlO ..C Orr.. Ca.t

ca.oft Lta3 rer?xgrco rrtiaor.

"cc35 O.utl?c arrxirv

rralSrt rcrxYft. !E{? t(rt|.t3 ca^vlcq-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^arhlt

cr,.rl,ll|lS t63aacoofo rrtr cl-l.vw|i. O.ra ft5. raCCliu Oa^.ct - lt DOtSraaor

C. vCL

aea-trctatl

?trt

r'.oatttE tctr{vrl

EIt

E

.!t!rll rcr'aYrr. ^rx^rr?r. ,rr3.ir|c, Lrtl.r trtctttSo. rad?tt loElAt4trltLtatt ca/.y

axocil?l tdlrxtty- r.arEo tofa.Yr'?€tf rtlrC. tfl. rfEcr^ft|-t tc.tl{taGD.LEa?to|.oturacaY

-^o3t LrLt!. crlY

at^83 LAat 't/rrl-Elr aaorxar.oclt?t. ..|c.cEr"tlt{t-r|t. rG^rHtrGO.

9JltY. LafitoraDt1jtOrv

a(€tlt,aatl.aLtr.ta lrof,3t"C. rolrralrr|G.latrrEtto, crr"aY. r3otur to oltraa*a.

|.l?tl.E r6r6a1. tta...af?€. trE't|.Ylf.tHtltO. Ltc|{t crctir!.t Cr.r. ra?tt_ag DOC D t f"i

"U.F^ctO,rS SaDr{tx?3.

CI.'VEY

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

^t6ttt xcratjroc

L^?t?l act-{Yrl

CU^.?Z|?E

cljvtroc

XEY TOWELI- CONSTRUCTTON

3'runrtol Catttl!r!t'! Clsr.a

a..ELEt t ta

O. lO F a9r{!

ltt rcrr cors?rrfiro srrcrt,cr?rc,rsFal 3.iO '.cr ra?tlv^!s.

LOG OF BORING

(

o

(

r(tr6fttir?|0r

KEO5

TEST WELL No. 2

gt.tt!. lrrv. rr:rrq ro osr la*i

TEST WELL No.2 (@NTTNUED)

^Catoatatt. ?aglxlmr|?l.y ^iE Snf"crittY.

ta.c L^t.rc toarYrt.racor,t atclr(a.r ea/ry

adLo.gar?t. cr.Cs 'tEoor.ri^i rt.vlrr3l'?:. ai^ratttt. atootSr ta*itO Ca^lt-{ at(ttr

-^r3 r,t|l tolS 11656a. trttxYt{Y ortr lggpa3a iaql

-ao3t ttcr.|,|.XTLYtjtm rcrr{rrr

l-/.4S rltE rraiTLt ^r.c3frEfgr'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.ICOarra atOr.t3,, Clrt

.a_olcrr?E. ticr..r^ra?|_y ^raoc3rrt.atxaaaf?.c. taact rIou,{t o3 LllrrG,€r,|fvtt. r.aot|.r| rtoorS. aaor( ro!l*it3. a^Y

c..ct rti. taaa aron LtxrEar.ocaftt tqtafYtY

L tt?t "ot

YFY. tt .rttr"|G. tf,orus roco^t3c c^r.to. LE}ft to ra9.rrr. ca^Y

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{ ararLa"r?E rcri{rtr. a.|rc|l lcc€r.o.,,l, ^LtGt-

rt|ot A tEl.u3t^rs. rctrxars tttlcsJ.\ tO ttctxrt.. clry

Ll?t?E ttrxr'tv. -.^.€lt?E. LOt? ?o*oxJU a'!}.t.|jr C..Y

rCttOat 4^Vfy

caoE3 ff?a.Gttt cl_lYAI.ofS Cr-tyat

olcttt. lrra^rrfttc. rttv ttrtG Gal|rto..aD||Jr

"o otrr cr^v

et^OCS 4^vat'

aoc -

r@-

Ert

rI

c^att:fixq,tt cr-.Y

-.oc3 to cr.rv-afi r|'|.crt Cr-^l

erott to Gl..Y

-^c3 f|?hqtt cr.rY

c.c3 r,?r telc c!.t-^r5:ttxqJ? c!^Y

EBa

EE

carr/tL

rc€!a.cl|"g

tt at

^r.ot3a"t

|.ltt?t tuat

LAtltS 'carxltt

o.cf"E

XEY TOWEII CONSTRUCTION

E - a .lro

lCt rtr-r- co{:ttrlctt€'r 3recr7|cry|Gb.37C 3.aao 'rcr tYtcava_3_

BORINGS

Gt-

LOG OF

Darncs & tloorc-

i jG lqg. ..&uy/Xrd-"'.,?Slrn

' Cqutq/tl"rt:

(rot.t"I

T - 7s'rn

| "- " ' ' f '10' ' 't-'-'1 1o-tf- -I ( /f.2D-.

t! -;:h,... g-sf ..

sf-fo. lo.rr

4f'rotr.tfSS'$oColfcf'70?o.l{ .-zf '7o90'Efgf-f o?o-t{

' ea,+S€

1:tS

L|-oClu+M;i,,r"AU

rq

Clr

lLQno -mh{/7t-t0

.-. rbttf- /gf-/to

sLzor''to- ,SZ

gg '

1$no'nk

yTrnfJ1{-@

^v

. . ?

.rs, .&*"*1**,- rV" I'I;tl*.lI{tA;i--G;;? holr ',^r,.s brrlTd

*r! ?oo' ( &:il"d ctp.S d Q;rz*.{.'} pva prer was \nsLtfud,. ,.,^i uktt .{ i,-r.r., bri.lgl t=;r{r, S" &*Lirfto}-Ut" r^ri.ft^, trrorrl-j LLs *us^

J \ t r i L - r . r . g

, ^ I - - | , r d ,

; tcrrvr---._!

I J-ZrlgEI lGra"elI f e'tET

{#Ic-'-

Ivled Brn*l'sz'

to-?*t ,&r&A,.&rH;l

f tk r

- - . - ' . { .1:3. . : ' : i .

i i1 . r l

itit:

--,M-

. : a

:J'6t', J 1 ; -

--. . . . :J.

( l{-16'6t:t?' 9f9o

7o -3K95'go320&fszttT' 7fr-Rf

. 5DA.5A,' sof€/o.90-srfs/t5asa0.Jtf, .

.52&s7ow.s5slt-ryo

. S{o-s*f

E - r

*,{t^6,t,^uet.j3f3{ct

7{ct3'{f'3tT-3t0.

3sD3gU5'303cox.{

. 3Lf.th .-:. stuif .( nragoj"i'{,:

s+5{?5e-ftr

_s5?905t0.af56.5P

:

. - 3?8?r2$.... s?f'{06

\)7Vl <4 t'(au7/rhz: rz'rt{? rtir(autuvLl-/.' c>-387

I

f. ( )lai_

'(:''-t'ii'i:l

9;:;, t- 3c3f --' 3r4o

lo-tf4f 'soJt''5.fSf'6oto4fcf'707o-t{ .?fEogo-Ef?f-f 0?o-{

i - 1s'/@^

v

v*Iygnc. m*(---l-_-- /?-f:O:o _.rL._': ..tgo.Rf ._

^Jet "- -eus€

- l : - : - ",ttr.f '

::,.clJt -"--- -; t-)8?'u&*3t'€nr I

Ph1 ,,/77,40

Lirrctr\r01s

f-b* --r'-tl.---- tt7

f9,fiF:;;k,;; 8i'ra e,l-ut* fi

O-ttZl Ovcrbcr&,!t. , _-_6vruc 15, lfnccr.*.1',Jc/l Jgrael6bre,u*inJk1 -

L.*.rt-r- ;1Dlor.tri .9.-l th"t{r..t'.

-I-llt- lwrGi.i.. . /ff.$o

'+irHor.llacrrfrL Vo

I *"*

I/Ehlsf/g'/t0/4rLr

' /Lft7o -tph{

I tqo 3ss/I Ov.--k4I v.lcr-.'c. CWII t.tcrnuall' sttr *{o

i '-v.\n%*,:lr /7t-/t0

. -l- .-. rbrtS.- /8f-lr0

tfo-nf .

A"t

9o/ts 6FJ68qEA ;0$159q:

58t0gc IoSt s/t- JuwW'8c

JZo?toC'Sst-Btar8d5t'5r+t-shr-oltolgSEeJtE ot6

F .q )fl

5l)oD.!9

1l:(. Prll:J

,'B

oes-s:/s' ..-.Jzs.ms7?,95/5

S/S-0/S' -'

6-EF =.-ltr& f:i

-ek6l,

w-flz| >l:u\("rl ty.'f

" -Avit H_

,ob lA'181i1 T{1

08

t' 9 zt

:.

; . -

1 : i i. :'.';.

1 ' - .

t : ' - -: -': .r'

'|-tgtz''i

o9{lz? stuo/z

1.

'c'{.aa

0rz-5t7

APPENDD(B

BASETINE U/ATR, QUALITT DATA

o o o o o o o cr o cr c) o (t o c> o o 0 G' 0 0 c, o €, e e c)

9 9 O o o o c r o rd - ' o ' d ; ; ; : : : : : : : : : : : : :3 : : : 3 : :

qq eq qq88qqqq88B8R8s888s8 3 3 3e; d c; d d d d o' o' - ' d d d d d ; d ; d ;; ; I d I ; ;

c o o o o o o o o o o g ? o c , c o S o e c o o o o o oo o o o c o o o e h h t s t ; . h 6 i - n c 1 r $ = > - ; ; H r y ao o o o o o o o 6 c r i i _ o d 5 6 b

; ; F ; : ; ; - : ; ; : ; ; ; : : : : : : : : : d : d :

q q q q q E E E g EEEEE E E EE gg g E E'E E Ed d d d d d o ' o ' ; d d ; d ; d ; ; ; ; ; ; ; ; ; i ; ;

qEqqqEEE 8EEEEEE8E8EEE3E3E3 Ed o ' d J J d o ' d ; ; d ; ; d ; ; ; ; ; ; ; ; ; ; i ; ;o o o c ' o c ) o o r o o . p o 3 o

H - E o F o s o S o

F o

c o o ct o ct ct oo c, o c) o cr o o c,- ;Y - ; -F -EOFOE 'EOEO3F f t p \ o E ' =

o ooFggof ' rs 'xg'oEog'goF o€' :AJ

: : 3 : : : ;? :: 3:: 3: : ; 3 I : :3i: : 3::e q q q e E a 8q q q q q q I I I r I I I I I I I3 3c; c; c; d o' c; c; dd c; d c; - ' - ' ; . ' ; ; ; ; ; : ; : i ; ;

u - -- \;E5^- \3Bo

A \* E 'E gJ -

e l PV E

5^?BoA

5

EB-r ^. + 9= go

U( l r4 \

a ! 4 q |= - g

g

6 ;6 E

C'

< < \

:EEgO ^

6 ;Egg

} P5 g

3r€O - 6- > oE ; f

5

A

U I \o bF E

I

- -o . C

3

oC ^

JH ;- 3SgU

oF

Q v- u 0F F I ,

A < !p I vCI

F

65Fqc u,(Jc , E

F

u,J UC F- << c t

EJ UJ Q

s5-

@

ofJ

r0

ordo

orjt&

o C ) o o o o o o g o g n o H

o n o 3 c , I o B o 3 o E oN

O O Ct Ct Ct Ct O O ct O Ct et O F O E Gr ct Ct ct O C, O O C, o g

Ct Ct O O g g O O .5 |'r n o !? G) g c' ts c) r\ c| t^ ct tr o| h o 6N s g - : - - - . -E -5

9 9 O c ) o o i r h ih - - F F

- ; F -

o . i . oH o .E . 3

oH o3 o 3 o !

o

t €F:FB&E' : eoFF -oF og.Eo3 o r . : ,

U

.DU'

< . JF g

O l g

ca c)9 -F a (-> F- -J 5J OUt a

U

F <o tIg--g

L

q q q q q e q qq q q e q E E q I I I I I I I I I3 r- : . F $d " $ t

c ; d d c ; c ; c ; d d dd ; ; ; ; ; d ; d

E3333gtso c t o o o . o o o o o o o € 3 € g 3 g € g o c , c , o c , c ,t I t I t I I 88 t I I B s S s H H H s g I I I I I8 ;

3 333 3S3 g* *_aF i ! ! t { e aQ! r { Q Q QQ,i t E p P S F FS S F F F F a F xt F F g B- S S r- n- B- SrB B- B- B- B- B- 3- is- p- 8- g- g- e- e- s'e- 5 5 s= E5 E 5 5 F *-;I

II

ts E S S A S A r;;;;;;;;;;;;;;;::;;i

:i: i ieq e € eq E g E, €e e EEE EsEsssEEEsEEo e - o o o - e ; d c ; c ; d e ; " , { "

c ; c ; d c ; d d ; ; ; d d ; ; ; : ; ;

qEEqEqEEqEqEq EqEEqEE qEggEEggggEBd c ; c ; d d d ; ; ; ; ; ; d d d ; ; _ . ; ; ; ; : l I ; d d d d d c ;

_ 9 : : : ? ? q ? ? o o o o o o o o q 9 o 9 o o o o o o o o o o o- o o o d o o d c ; c i c ; d d 6 ; d d d c ; d d ; ; ; ; d ; ; ; ; : :

€I;qEqEqqEqE EE EEqqEfi E€EB3E8FgF88d d d d d d d d c ; ; ; ; ; ; ; ; ; a ; ; ; i : l i ; d d o . d ; in o o o c r o o o o o o o o o o o o o o o o o o o o o o o o o o o

qqqqeeqEqqqeqqqqqqeq eqqqsqrEqEEs; d d d e ; c ; d d d o o o o q o o o . j ; J ; ; ; ; : ; ; ; ; l ; ;

qqqqqeqEe r88 88 8r 88q8E8888r888888d d d d d d o ' c ; c ; ; ; ; ; ; ; ; ; d d ; ; ; ; ; ; ; ; ; ; ; ; ;

qqqqqeErrE I 8r I Br I qeqqqqqqqqqqqqEo d d d d d c ; c ; d c ; c ; d d d d e i e i o 9 o o o < , o - ; ; ; ; : ; :

; ; ; g ggB ;

3 o o o o o o o o ( > o o F g o o o o o o c , o e c , < , o o o o o o o

3 O O o o o o o o o G r o o c , o o c , o o c D o c r 0 o o o o o c r o o o

e ct c, o o cr o o c) o o 0 0 c, o o o o c, c, c, 0 0 0 0 c, c)o o G, c, c,

q o o o o o o o o o o G) O O o c, c, o O 0 o c, o o c, G' C' c' G) G' L O

t ! o o o o o o o o o R 3 F g = o o o .g o o c , o o o . ) c ) c , o 9 ! o oo l! h

!Y O O cr c) o o N o q 6 ry O N .4 0 0 0 0 I Gr O c' c, o o c, o o h c, c,3 6 * o o E - s G g . i 6 - - F N i r n e

n F

o o o o o o o o o g p t p g o o o o o o o o ( > c r c ) o c , o o o c r ot'l \t t\ rt rO

gl o o o 9 e o - 6y !o o o io o - cr er o cr ero o e, o ol i = ! 4 o 6 o g E h - F 6 = - - h= - b ' t N o n n € n r ' r 6 o o o 9 g E o o

6

\ \ ^ , . t F t r O O 9 a \ F 6 6 { N F € € 6 6 E r^: t ' i i r : : : : : : : :x: : : : :3; : : : :3: : : : : :

O Ct Ct O Ct O Gt O O C, cr G> O O' O Gt Cr O O O,O gr 6r g, e, e, c, c, G, C, c, O8.8 t I I I t B I B I I B r ' I t I r t 8; t t a a s c s t t t I teReQrrr t !!*Fs s 3 = =i$$$$FF$g$i$$$FFSqi{Q€t=irQ€::ei:83968=8ts=BSBEi Bag

:i- ;'r'i :;1

"

'""

R 9 9 i I q q o G 6 o o . G o r . o o . > o G > c > t 6 d a a a -: r : i : a; I : f i l g t t f I T, 5 5 n A $ f i '$f i $ i$ $f i$;q Be * ' : , ' : , ' ;

u '-)

- \; g

5^- \5 g

e c tO F6 v

r ^8B

5:?Foa.

5

AB-5:3B(,

U

( ! ;

> q 6- < e-U

- \g P

C'

: 69E E v

E

c \9 q '- e

L)

: P5 ga

. Eo > q) F \o - o- > ov - E

9B

o- -o 5

o

> F O

3 i5u

oe e

- u . ,F F O

u t vo

- Ec, ct

;< . aC'O a

UJ UA FI << c !o

U

oo

< , JF U

C ' U

e 6c r -F < (-> F- -J fJ C 'Ut r

UF FF <o tL)r-zg)<

c

J @

YE-

i Pege [o.

12t29/87

IJETT

XUil8ERsAftPtE loc^TtoflO A T E T T S O R T

DEPTI TO EIEV. OF9AIER y tE[( feet , ( rnst )

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