# Poo r Qualit y Origina l T h e followin g documen t image s hav e bee n scanne d fro m th e best availabl e origina l copy

.

# UNITE D

STATE S ENVIRONMENTA L

PROTECTIO N AGENC Y REGIO N VII I 9 9 9 18t h STREE T

- SUIT E 50 0 DENVER

, COLORAD O 80202-246 6 

# Ref : 8EPR-S R ACTIO N MEMORANDU M 

# DATE : SUBJECT :

FROM : T O : 

# January

26
, 200 0 Reques t fo r Remova l (Response ) Actio n a t th e Californi a Gulc h Nationa l Prioritie s Lis t Site

, Leadville

, Colorado : ACTIO N MEMORANDU M fo r a Time

- Critica l Remova l Actio n fo r a t th e Apach e Tailing s Impoundmen t (Operabl e Unit? ) A ! Rebecc a Tho m Remedia l Pro j age r MaxH

. Dodso n Assistan t Regiona l Administrato r Offic e o f Ecosystem s Protectio n an d Remediatio n Fina l NP L Sit e I D #2 9 CERCLI S I D # COD98071793 8 

# Categor y o f Removal : Time-Critica l I

. Purpos e Thi s Actio n Memorandu m document s th e Agency' s selectio n an d implementatio n o f th e tim e critica l remova l (response ) actio n describe d herei n fo r th e Apach e Tailing s Impoundments

, a n are a contaminate d wit h metal-lade n tailing s fro m historic minin g an d millin g operations

. Th e Apach e Tailing s Impoundmen t are a comprises a smal l portio n o f th e Superfun d RI/F S Stud y Are a o f th e Californi a Gulc h Superfun d Site

, locate d in th e Leadvill e minin g distric t o f Lak e County

, Colorado

. T h e Tim e Critica l Remova l Actio n a t th e Apach e Tailing s Impoundment s i s consisten t wit h th e remedia l activitie s whic h wil l b e undertake n b y EP A a t O U 7

. Final remedia l alternative s fo r al l area s o f O U 7 wil l b e evaluate d i n the Focuse d Feasibilit y Stud y (FS ) an d Recor d o f Decisio n (ROD ) fo r OU7

. Th e RO D fo r O U 7 wil l ultimatel y specif y thos e remedia l action s beyon d thos e respons e action s implemente d pursuan t t o thi s Actio n Memorandu m that ar e required

.

Printod on Recycled Paper

# Thi

s Remova l Actio n wil l involv e th e Mai n Tailing s Impoundmen t an d th e Nort h Impoundment

. Thes e ar e show n o n Drawin g No

. 5344-C 1 attached

. The primar y goal s o f th e respons e actio n at th e Mai n Tailing s Impoundmen t ar e t o eliminat e th e accumulatio n o f wate r i n thes e area s an d prepare d th e tailin g unde r th e fil l 

# placemen t footprint

, through consolidatio n an d dewatering

, fo r futur e excavation 

# activities

. The primar y goa l o f the respons e actio n at the Nort h Impoundmen t i s t o reduce infiltratio n o f surfac e wate r i n th e are a whic h ha s bee n identifie d a s a sourc e 

# o f metal s loadin g t o groundwater

. Remedial actio n objective s wer e identifie d i n th e Final Screening Feasibility Study for Remediation Alternatives at the California Gulch NPL Site, Leadville, Colorado (SFS)

, (ERA

, 1993a)

. Consisten t wit h th e SFS

, remova l actio n objective s fo r th e 

# Apach e Tailing s Impoundment s are : 

# O Contro l wate r erosio n o f tailing s materia l fro m th e sourc e location s O Contro l leachin g an d migratio n o f metal s fro m tailing s int o surfac e 

# wate r O Contro l leachin g an d migratio n o f metal s fro m tailing s int o groundwate r 

# Remova l alternative s t o directl y remediat e surfac e wate r or ground wate r i n th e vicinit y o f the Apach e Tailing s Impoundment s hav e not bee n evaluated

, an d wil l b e addresse d unde r Operabl e Uni t 12

. I I

. Californi a Gulc h

- Sit e Condition s an d Background 

# Th e Californi a Gulc h Sit e wa s liste d o n th e Nationa l Prioritie s Lis t o n Septembe r 8
, 1983

. The Sit e i s i n a minin g are a coverin g 16 1 

# / 4 squar e mile s o f a watershe d tha t drains alon g Californi a Gulc h t o the Arkansa s River

. Startin g i n 1859
, the are a wa s mined extensivel y fo r gold

, lead

, silver

, copper
, zinc
, an d manganese

. Californi a 

# Gulc h collect s runof f that drain s numerou s abandone d mine s an d waste s fro m mining
, millin g an d smelting

. Miner s buil t th e Ya k Tunne l t o drai n wate r fro m th e 

# min e working s and t o mak e minera l exploratio n and developmen t easier

. Thi s tunne l drain s hundred s o f mile s o f min e working s i n it s 4-mil e undergroun d cours e an d prio r t o th e constructio n o f th e Ya k Tunne l Wate r Treatmen t Plant

, discharge d approximatel y 21 0 ton s o f metal s eac h yea r int o Californi a Gulch

. Seventy-fiv e know n mill s dumpe d tailing s int o 5- 6 miles o f drainages

. Si x impounde d tailing s dump s surroun d th e Cit y o f Leadville

. Man y smelters

, whic h ar e locate d aroun d th e

Printed on Jtoeycfa f P»p»r

# city
,

processe d silver

, lea d and zin c a t variou s times

. Heavy meta l residues are presen t i n muc h o f the City

. The Arkansas Rive r whic h receive s wate r fro m the Californi a Gulch

, ha s bee n classifie d a s a recreationa l resource , an d i s use d 

# heavil y fo r irrigation
, livestoc k watering
, publi c wate r supplie s an d fisheries

. Approximatel y 7,40 0 liv e i n nearb y Leadvill e an d Lake Count y (Se e Exhibi t 1 -Sit e 

# Locatio n Ma p an d Exhibit 2 - Operabl e Uni t Map )
III

. Apach e Tailing s Impoundment s A

. Backgroun d 

# T h e Apach e Tailing s Impoundment s no w consist o f th e Main Tailing s 

# Impoundmen t an d th e Nort h Tailing s Impoundment

. Th e smalle r impoundments

, TP 2 an d TP3

, whic h wer e locate d alon g Californi a Gulch

, approximatel y 1,50 0 fee t downstrea m o f th e Ya k Tunne l Wate r Treatmen t 

# Plan t Surg e Pond wer e remove d i n 1997

. Th e materia l remove d wa s take n 

# t o th e Main Tailin g Impoundment

. Th e mai n impoundmen t encompasses approximatel y 11. 3 acre s an d contain s a n estimate d 630,00 0 cubi c yard s o f 

# tailin g material

. Th e embankmen t slope s o n th e nort h an d eas t sid e o f th e mai n impoundmen t range fro m 1.5: 1 (H:V ) t o 1.75: 1 and reac h height s u p t o 1 5 feet

. Th e embankmen t slop e on th e southwes t sid e o f th e mai n impoundmen t approache s 1: 1 an d i s u p t o 5 0 fee t i n height

. 

# A fiel d investigatio n wa s conducte d i n Novembe r an d December 199 6 t o supplemen t the existin g dat a presente d i n the Remedia l Investigatio n an d Feasibilit y Stud y fo r th e site

. Th e purpos e o f thi s investigatio n wa s t o gathe r dat a t o enhanc e th e evaluatio n o f th e interactio n o f surfac e wate r and groundwate r i n th e immediat e vicinit y o f th e Apach e Tailing s Impoundments

. 

# A s par t o f thi s supplementa l fiel d investigation
, 1 1 ne w groundwate r monitorin g well s wer e installe d at the site

. Tw o round s o f groundwate r and surfac e wate r samplin g wer e planne d at the sit e a s par t o f the supplementa l 

# investigation ; on e samplin g even t wa s performe d i n Novembe r 199 6 t o coincid e wit h low-flo w condition s at the sit e involve d the samplin g o f 1 8 groundwate r wells

, an d surfac e wate r samplin g a t 22 locations

. Additiona l 

# detail s ar e provide d i n th e Interim Removal Action Plan, Operable Unit 7
, Ca l Gulch Superfund Site, date d Apri l 3,199 7 an d a lette r date d Marc h 1.3,199 7 

# whic h transmit s th e monitorin g dat a fo r th e samplin g even t describe d above

. Bot h these document s ar e attache d t o th e Apri l 7
, 199 7 Actio n Memorandum

.

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# B

.

Sit e Characterizatio n - Apach e Tailing s Impoundmen t 

# T h e result s o f previous investigation s relate d t o th e Apach e Tailing s Impoundmen t ar e presente d i n variou s report s includin g th e Tailing s 

# Disposal Area Remedial Investigation Report, California Gulch Site, Leadville, Colorado, Januar y 1994
, th e HydrogeologicRemediallnvestigation Report (1995), an d th e Surface Water Remedial Investigation Report (1995)

. I n Januar y 1996
, a Draft Feasibility Study (FS ) was submitte d fo r th e Apach e 

# Tailing s Impoundments

. Subsequen t t o th e submitta l o f th e draf t FS

, additiona l sit e investigatio n activitie s hav e bee n initiate d t o supplemen t th e previou s investigation s an d t o suppor t completio n o f th e FS

. The principa l concern s specificall y addresse d b y thi s Remova l Actio n are :


# • Impact s th e tailing s impoundment s ma y hav e o n surfac e wate r an d groundwate r qualit y i n Californi a Gulch ; an d



# • Preparatio n o f th e tailing s material

, primaril y throug h consolidatio n a n d dewatering

, t o facilitat e th e timel y implementatio n o f future

, fina l 

# respons e actions

. B

. 1 A lette r report date d Septembe r 23,199 8 whic h summarize s surfac e water an d groundwate r qualit y dat a fro m samplin g event s performe d 

# i n th e are a o f th e Apach e Tailing s Impoundments

, durin g Novembe r and December 1996 ; Jun e 1997 ; Novembe r 199 7 and Jun e 199 8 i s 

# attached

. C

. Other Action s t o Dat e
• A Tim e Critica l Remova l Actio n wa s performe d b y EP A on th e Apach e Energ y an d Mineral s Propert y whic h i s include d i n Operabl e Uni t 7

. 

# Th e actio n involve d remova l o f drum s and bag s o f pyrit e and 

# decontaminatio n an d demolitio n o f building s an d equipment

. Thi s Remova l Actio n wa s addresse d i n a separat e Actio n Memorandu m date d Augus t 6,1996

. 

# • Durin g th e summe r an d fal l o f 1995
, ASARC O installe d approximatel y 

# 6 horizontal drai n pipe s t o passivel y drai n wate r fro m the mai n 

# impoundment

. Th e demonstratio n projec t prove d ineffectiv e in drainin g th e tailing s an d wa s abandoned

. Ove r th e past severa l year s ASARC O ha s monitore d wate r level s on to p o f the mai n impoundmen t an d TP s 2 an d 3 an d a s needed

, th e ponde d wate r ha s bee n transferre d t o th e Ya k Treatmen t plan t t o prevent catastrophic releas e o f th e metal-lade n water int o Californi a gulch

.

Printed

on Recycled Pmper

# SITE

Source : SMI/TerraMalrlx

.

1996 a 

# EXHIBI

T 1 

# Calttoml a Gulc h Superfun d Sit e Genera l Locatio n Ma p Leadville

, Colorad o

# A

Remova l Actio n whic h wa s performe d fro m Apri l 21
, 199 7 thr u Augus t 27,199 7 involve d remova l o f Tailing s Pond s # 2 an d #3

. Th e 

# materia l fro m th e pond s wa s transporte d t o an d distribute d o n th e surfac e o f th e Mai n Tailing s Impoundmen t as show n o n Drawin g No

. 5344-C 2 (Cop y attached)

. Additiona l informatio n concernin g thi s respons e actio n i s availabl e i n th e Fina l Pollutio n Report

, Jun e 30,1998

. 

# D

. Stat e an d Loca l Authorities Role s A cultura l resourc e investigatio n o f th e Apach e Tailing s Area wa s conducte d i n 1995

. Al l o f th e activitie s involve d wit h thi s respons e actio n involv e 

# previousl y disturbe d material s o r material s whic h hav e bee n generate d a t O U 9 a s a result s o f remova l action s performe d unde r the Min e Wast e Pil e Remova l Action

. 

# I V

. Threat s t o Publi c Healt h o r Welfar e o r th e Environment A Final Baseline Aquatic Ecology Risk Assessment (FBAERA)

, Californi a Gulch

, Leadville

, Colorad o (Ro y F

. Weston

, Inc. ) identifie s th e Site-wid e impac t o f min e wast e contaminatio n o n th e terrestrial an d aquati c ecosystem s a t th e Site

. Th e 

# FBAER A provide s a conceptua l mode l o f Site-wid e exposur e fo r aquati c receptors

. Thi s Time-Critica l Remova l Actio n i s necessitate d b y th e threa t t o publi c health

, 

# welfar e and/o r the environmen t pose d b y the direc t contact
, inhalation

, and ingestio n exposur e route s t o hazardou s substances

. The respons e actio n at the 

# Mai n Tailing s Impoundmen t i s bein g performe d a s a preparator y ste p t o subsequent remedia l action

. Th e respons e actio n a t th e Nort h Impoundmen t wil l eliminat e 

# pondin g o f wate r i n a n are a that ha s bee n identifie d a s a sourc e o f metal s loading

. 

# Th e action s wil l als o reduce release s o f metal s t o th e surfac e an d groundwater

.

Printed on Recycled Paper

# V

. Endanaermen t Determinatio n 

# Actua l and/o r threatene d release s o f hazardous substance s fro m th e Apach e Tailing s Impoundments

, i f no t addresse d b y implementin g th e remova l actio n 

# selecte d i n this Actio n Memorandum

, present s endangermen t t o publi c health

, o r welfare

, o r the environment

. The publi c and environmen t wil l continue d t o b e expose d t o th e releas e o f significan t quantitie s o f contaminate d materials

. V I

. Propose d Actions/Schedul e A

. Propose d Action s 

# 1

. Th e propose d interi m action s ar e describe d i n th e Interim Removal Action 

# Plan, Operable Unit 7, Apache Tailings Impoundments, California Gulch Superfund Site, date d Septembe r 9,1999

. Th e propose d interim action s includ e th e following : MAI N TAILING S IMPOUNDMEN T



# 1. 1 A tota l o f approximatel y 11,00 0 cubi c yard s o f fil l materia l wil l b e neede d t o achiev e the grade s require d t o eliminat e surfac e wate r pondin g and t o accelerat e the consolidatio n and dewaterin g o f the 

# tailing s material

. Th e fil l materia l require d wil l b e generate d from :


# • Excavatio n o f material place d o n the Main Impoundmen t durin g th e remova l o f TP 2 an d TP 3 i n 199 7 (approximatel y 1,00 0 cubi c yards) ;


# • Regradin g th e eastern embankment o f th e Mai n Impoundmen t t o a 3(H): 1 (V ) slop e (approximatel y 2,00 0 cubi c yards) ;


# • Regradin g the southwes t embankmen t i n the vicinit y o f the woode n bo x culvert

, (approximatel y 1,50 0 cubi c yards) ; and

• Excavatio n o f tailin g materia l overlyin g the clay-til e culver t at 

# th e souther n edg e o f th e Mai n Impoundmen t (approximatel y 7,00 0 cubi c yards)

. 

# Th e tailing excavatio n area s identifie d o n th e Mai n Impoundmen t ar e considere d t o b e consistent wit h activities tha t ma y b e require d unde r an y o f th e actio n alternative s considere d i n th e O U 7 FFS

.

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# A

s par t o f the excavation/constructio n

activitie s outline d above

, a ber m wil l be maintaine d a t th e to p o f th e regrade d slope s t o direc t runof f fro m th e to p surfac e o f the Main Impoundmen t t o the remainin g ponde d are a t o preven t 

# flo w fro m overtoppin g an d erodin g th e regrade d slopes

. Positiv e drainag e wil l als o b e maintaine d towar d th e pon d fro m th e area(s ) fro m whic h th e TP2/TP 3 materia l i s excavated

. Excavatio n i n th e are a ove r th e clay-til e 

# culvert s wil l b e maintaine d suc h that wate r wil l no t poo l an d wil l drain t o Californi a Gulch

. Tailing s tha t ar e expose d o n th e nort h sid e o f th e excavatio n ove r th e cla y til e culvert s wil l b e covere d wit h 1 ft

. minimu m o f clea n fil l material

. Prio r t o th e installatio n o f preloa d fil l placemen t regradin g activities
, roc k fil l wil l b e place d alon g the to e o f a portio n o f the southwes t embankmen t o f the 

# Mai n Impoundmen t t o buttres s an d improv e th e slop e stabilit y in thi s area

. 

# Th e portio n o f th e embankmen t t o b e buttresse d i s locate d betwee n th e outle t o f th e woo d bo x culver t an d th e tailing s kno b whic h extend s out int o th e channel a s show n o n Drawin g No

. 5344-C 2 attached

. 

# Wate r presentl y ponde d o n th e souther n portio n o f th e Mai n Impoundmen t surfac e wil l b e remove d t o facilitat e th e placemen t o f th e preloa d fill

. Th e 

# norther n an d souther n area s o f th e existin g pon d wil l b e divide d b y th e constructio n o f a n interim dik e a t th e norther n edg e o f th e fil l placemen t



# area

. Onc e th e divide r dik e ha s bee n constructed

, wate r i n th e souther n portio n wil l b e pumpe d t o th e norther n portion

. Th e divide r dik e wil l b e constructe d b y placin g wove n geotextile

, a s necessar y fo r subgrad e support
, 

# acros s th e pon d an d placin g two t o thre e fee t o f coars e soi l materia l (subgrad e material s remove d fro m TP2/TP3 ) ove r th e fabric

. T o maintain a n 

# equivalen t storag e capacit y o f th e pon d followin g fil l placement

, th e intersectio n o f th e acces s road s t o monitorin g well s MW11S/ D an d 

# MW12S/ D (currentl y th e lo w poin t o f th e ponde d area ) wil l be raise d as necessar y t o achiev e a minimu m elevatio n o f 10,11 4 feet

. Durin g excavatio n an d regradin g activities
, on-sit e transport
, an d placemen t

o f tailin g material

, appropriat e engineerin g control s wil l b e maintaine d t o contro l stor m wate r runof f an d dus t generation

. Sil t fence

, o r othe r temporar y sedimen t contro l devices

, wil l b e installe d a t th e bas e o f th e impoundmen t embankment s t o b e regrade d t o intercep t an d retai n sedimen t i n stor m water runoff

. Whil e dus t contro l wil l no t likel y be require d i n th e 

# excavatio n and fil l placemen t areas , dus t contro l o n the hau l rout e wil l b e maintaine d throug h wate r application

, a s necessary

. Severa l settlemen t plate s wil l b e installe d i n th e fil l placemen t are a t o 

# monito r settlement/consolidatio n

o f th e underlyin g tailing s a s a resul t o f th e 

# loadin g fro m th e fill

.

Printed on Recycled Paper

# NORT

H IMPOUNDMEN T 

# Constructio n activitie s t o be performe d o n th e Nort h Impoundmen t woul d 

# involv e fil l placemen t ove r th e are a indicate d o n Drawin g No

. 5344-C 1 attached

. I t i s estimate d tha t approximatel y 4,00 0 cubi c yard s o f fil l materia l 

# woul d b e require d t o preven t th e accumulatio n o f surfac e wate r i n thi s area

. T h e majorit y o f th e fil l materia l (approximatel y 3,000 cubi c yard s woul d b e 

# min e wast e materia l fro m pile s currentl y bein g remove d unde r th e O U 9 Min e Wast e Pil e Remova l Action

. Th e uppe r 1 foo t o f th e fil l materia l woul d consis t o f clea n fil l haule d fro m th e of f sit e sourc e identifie d i n th e OU 9 Min e 

# Wast e Pil e Removal Actio n Work Plan

. O U 9 Min e Wast e Materia l has bee n selecte d fo r us e a s fil l because o f th e no n aci d generatin g potentia l an d 

# materia l characteristics whic h shoul d resul t i n a lower permeabilit y material du e t o th e fine r grai n siz e characteristic s compare d t o th e clea n borro w fill

. T h e fina l regrade d surfac e woul d be slope d t o th e south

. B

. Applicabl e o r Relevan t an d Appropriate Requirement s (ARARs ) T h e ARAR s liste d o n TABL E F. 1 AN D F. 2 wil l b e followe d t o th e extent 

# practicable

. Copie s o f thes e Table s ar e attached

. C

. Performanc e Standard s 

# 1

. Th e designe d an d constructe d respons e actio n include s provision s t o ensur e 

# tha t ther e ar e no visibl e emission s (dust ) durin g remova l activitie s at th e Apach e Tailing s Impoundments

. Dus t control o n th e hau l route
, an d othe r areas, wil l b e maintaine d throug h wate r application

, a s necessary

. 2

. Durin g th e excavation
, on-sit e transport
, an d placemen t o f tailing s material

, 

# appropriat e engineerin g control s wil l b e maintaine d t o control storm water runof f an d dus t generation
, sil t fences

, ha y bale s and/o r othe r sedimen t contro l device s wil l b e use d t o intercep t an d retai n sedimen t i n storm wate r 

# runoff

. Th e sedimen t contro l structures wil l be lef t i n place

, as necessar y followin g th e completio n o f excavation

. Un-contaminate d surfac e wate r wil l 

# be diverte d awa y fro m th e tailing s t o minimiz e contac t wit h tailings

.

^* 7 Printed o n Recycled Paper

8

# 3

.

A long-ter m maintenanc e progra m ma y b e implemente d i f require d b y th e Fina l Recor d o f Decisio n fo r Operabl e Uni t 7 (O U 7 ) t o ensure th e long-ter m 

# effectivenes s o f th e respons e action

. D

. Projec t Schedul e 

# Th e respons e actio n wa s complete d i n Octobe r 1999

. E

. Estimate d Cost s 

# Thi s respons e actio n i s bein g conducte d b y ASARCO

, Inc

. VII

. Expecte d Chang e in th e Situatio n Shoul d Actio n B e Delaye d o r N o t Take n I f thi s Time-Critica l remova l actio n i s delayed

, o r no t taken

, exposur e o f th e publi c 

# and environmen t t o heav y metal s containe d i n the min e wast e locate d i n the Apach e Tailing s Impoundment s wil l continue

. Withou t this time-critica l response
, 

# releas e o f contaminate d tailing s int o Californi a Gulc h an d th e Arkansa s Rive r wil l continu e t o contaminat e surfac e wate r an d groundwate r i n th e are a aroun d th e Apach e Tailing s Impoundments

. VIM

. Outstandin g Polic y Issue s 

# A Recor d o f Decisio n wil l b e issue d selectin g th e fina l remedia l actio n fo r Operabl e Uni t 7 (O U 7 ) o f thi s Site

. 

# I X

. Enforcemen t Thi s Time-Critica l Remova l Actio n wil l b e performe d b y ASARCO

, Inc

.

Printed on Recycled Paper

# X.

. Recommendatio n 

# Thi s decisio n documen t represent s th e selecte d Time-Critica l remova l actio n fo r th e Apach e Tailing s Impoundment s portio n o f O U 7 o f th e Californi a Gulc h Superfun d 

# Site

, in th e Cit y o f Leadville

, Count y o f Lake

, Stat e o f Colorado

. I t wa s develope d i n accordanc e wit h CERCLA

, a s amended

, an d i s no t inconsisten t wit h th e NCR

. 

# Thi s decisio n i s base d o n th e Administrativ e Recor d fo r th e Site

. Condition s a t th e Apach e Tailing s Impoundment s mee t th e NC R Sectio n 300.415(b)(2 ) criteri a fo r a remova l an d I recommend approva l o f th e remova l action

. APPROVA L 

# •r

C/V\xv 4 /yyyy M Jt^

. 

# M a x hf f Dodso n Assistan t Regiona l Administrato r Offic e o f Ecosystem s Protectio n 

# and Remediatio n
DISAPPROVA L



# M a x H

. Dodso n Assistan t Regiona l Administrato r Offic e o f Ecosystem s Protectio n and Remediatio n

*-* y 

### Printed on Recycled P»por
1 0

# TABL E 4- 2 

# Summar y O f Potentia l Chemical-Specifi c ARAR S OU 7 - Apach e Tailing s

RCR A Subtitl e C 

## 4 0

CF R Par t 261. 4 (bX7 )

an d RCR A Sectio n 3001 

## (b ) (Bevil l Amendment ) N

o RCR A Subtitl e C i s no t applicabl e o r relevan t an d 

## appropriat e because th e sourc e materia l (tailing ) ha s bee n 

## identifie d a s a n extractio n o r beneficiatio n wast e tha t i s 

## specificall y exempte d fro m th e definitio n o f a hazardou s waste

. Clea n Ai r Act

, 

## Nationa l Primar y and Secondar y Ambien t Ai r Qualit y Standard s 4 2 US C Sectio n 7401-764 2 

## 4 0 CF R Par t 5 0 Yes 

## Nationa l ambien t ai r qualit y standard s (NAAQS ) ar e implemente d throug h th e Ne w Source Revie w Progra m an d Stat e Implementatio n Plan s (SIPs)

. Th e federa l Ne w Sourc e Revie w program addres s onl y majo r sources

. 

## Emission s associate d wit h propose d remedial actio n i n OU7willb e limite d t o fugitiv e dus t emission s associated wit h eart h movin g activitie s durin g construction

. Thes e activitie s wil l no t constitut e a majo r source

. Federa l NAAQ S mor e stringen t tha n Stat e standard s ma y b e applicable

. Se e Colorad o Ai r Pollutio n Prevention an d Contro l Act concernin g applicabilit y o f requirement s 

## implemente d throug h th e SIP

.

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# Summar y O f Potentia l Chemical-Specifi c ARAR S (continued ) OU T

- Apach e Tailing s



# . ;

Colorad o Ai r Pollutio n Preventio n and Contro l Act 

### Regulatio n No

. 8 

### 5

CC R 1001-14 ; 5 CC R 1001-1 0 Part C (I ) Regulatio n 8 

### Yes Regulatio n 8 set s emissio n limit s fo r lead

. Applicant s ar e require d t o evaluat e whethe r th e propose d activitie s woul d resul t i n a n exceedance o f thi s standard

. Th e propose d remedia l actio n i n OU 7 i s not projecte d t o excee d the emissio n level s for lead

, 

### althoug h som e lead emission s ma y occur

. Complianc e wit h Regulatio n 8 wil l b e achieve d b y adherin g t o a fugitiv e emission s contro l pla n prepare d i n accordanc e wit h Regulatio n No

. 1

. Thi s 

### pla n wil l discus s monitorin g requirements
, i f any , necessar y t o achiev e thes e standards

. Colorad o Ambien t Air Qualit y Standard s 

### 5

CC R 100 1 Yes Primar y an d secondar y standard s fo r PM1 0 i n ambien t air

. 

## Complianc e wit h ambien t ai r standard s wil l b e achieve d b y adherin g t o a fugitiv e emission s dust contro l pla n prepare d i n accordanc e wit h Regulatio n No

. 1

. Thi s pla n wil l discus s 

## monitorin g requirements
, i f any , necessar y t o achiev e these standards

. _______;______

_

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## TABL E 4- 3 

# Summar y O f Potentia l Location-Specifi c ARAR S OU 7 - Apach e Tailin g

.':.:.:•:•.'.. ! V JftVMSJTMWfl l 

### Stnndard

, RequiVfe i

, - , _• ..-.- ;' -i.- j' ;r!*'ifv*i i¥i" < ^4f^'4V". J TW-

- • •'•

.. •

. ;••:',

- . • ••.:'/, • 

### Nationa l Histori c Preservatio n Ac t (NHPA ) I6USC§470etsefl

. A 

### portio n o f 4 0 CF R § 6.30l(b ) 

### 36 CF R Par t 63
, Par t 65
, Par t 80 0 

### Expand s histori c preservatio n programs ; require s preservatio n o f resource s include d i n o r eligibl e fo r listin g
o n th e Nationa l Registe r fo r Histori c Place s (NRHP)

. Archeological/cultura l resourc e survey s hav e bee n conducte d i n satisfactio n o f the requirement s o f the NHPA

. A portio n o f OU 7 (stam p mil l site ) ha s bee n 

### recommende d a s eligibl e for listin g on th e NRHP

. Therefore

, th e NHP A i s applicable

. 

### Executiv e Orde r 1159 3 Protectio n an d Enhancement o f th e Cultura l Environmen t 1 6 US C §47 0 Yes Direct s federa l agencie s t o institut e procedure s t o ensur e 

### program s contribut e t o th e preservatio n an d enhancemen t



### o f non-federall y owne d histori c resources

. Consultatio n wit h th e Advisor y Counci l on Histori c Preservatio n i s require d i f remedial activitie s shoul d threate n cultura l



### resources

. Complianc e wit h the applicabl e provision s o f th e orde r wil l b e achieve d b y implementin g a n approve d mitigatio n pla n i f cultura l resource s are threatened

, an d 

### throug h workin g wit h th e Advisor y Counci l t o ensur e tha t

an y threatene d cultura l resource s ar e appropriatel y preserved

. 

### T h e Histori c an d Archaeologica l Dat a Preservatio n Act o f 197 4 

### 1 6

US C 46 9 

### 40CFR§6.30l(c ) Yes Establishe s procedures t o preserve historica l and archeological dat a tha t migh t b e destroye d throug h 

### alteratio n o f terrai n a s a resul t o f a federa l constructio n projec t o r a federall y license d activit y program

. A cultura l



### resourc e surve y wa s complete d i n OU 7 t o identif y histori c propertie s whic h ma y b e affecte d b y remedial activity

. Complianc e wit h th e Ac t wil l b e addresse d b y 

### implementin g an approve d mitigatio n plan

, i f cultural

resource s ar e threatened

. Histori c Site s Ac t o f 193 5 

### 1 6

US C §461-46 7 N

o N

o 

### Preserve

s for public use histori c sites
, buildings

, an d 

### object s o f natura l significance

. I s potentiall y applicabl e i f



## an y sit e featur e i s determine d t o b e o f natura l significance

. Complianc e wit h th e requirement s woul d b e addresse d b y the mitigatio n plan

. _____ JA5344\5344-4\FSVrA

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# TABL E 4- 3 Summar y O f Potentia l Location-Specifi c ARAR S (continued ) OU 7 - Apach e Tailin g

T h e Archeologica l Resource s 

### Protectio n Ac t o f 197 9 16USC§§470aa-4701 l N o 

### Require s a permi t fo r an y excavatio n o r remova l o f archeologica l resource s fro m publi c land s o r India n lands

. Ma y b e relevan t an d appropriat e i f archeologica l resource s 

### encountered durin g remedial activity

. Executiv e Orde r No

. 1199 0 Protectio n o f Wetland s 

### 40CFR§6.302(a)an d

Appendi x A Yes 

### Minimize s advers e impact s o n area s designate d a s 

### wetlands

. Wetland s hav e bee n identifie d i n adjacen t area s whic h ma y b e impacte d b y th e remedia l actions

. 

### Mitigatio n o f impact s t o th e adjacen t wetland s wil l b e addresse d i n the remedia l desig n report for OU7

. Executiv e Orde r No

. 1198 8 Floodplai n Managemen t 4 0

CFR § 6.30 2 & 

### Appendi x A Y e s Pertain s t o floodplai n managemen t and constructio n and 

### impoundment s i n suc h areas

. OU 7 i s locate d withi n th e 

### floo d plai n o f Californi a Gulch

. Th e remediatio n mus t be conducte d t o avoi d long

- an d short-term impact s 

## associate d wit h th e occupatio n or modificatio n o f th e floo d plain

. Resource Conservatio n an d Recover y Ac t (RCRA)

, Subtitl e D 4 0

CF R Par t 257
, 

### Subpar t A

, §257.3- 1 Floodplains

, paragrap h (a ) 

### N o 

### Y e s Provide s genera l classificatio n criteri a fo r soli d wast e disposa l facilitie s pertainin g t o floodplains

. A s th e remedia l action s fo r OU T ma y involv e establishmen t o f a solid wast e disposa l facility

, portion s o f thi s regulatio n ar e 

### potentiall y relevan t an d appropriate

. Thi s regulatio n prohibit s sitin g a facilit y fo r treatment
, storage
, o r disposa l



### o f soli d wast e within th e 100-yea r floodplai n s o a s t o 

### avoi d restrictio n o f the bas e flood

, reductio n i n temporar y wate r storag e capacity
, an d washou t o f soli d waste

. Sectio n 404
, Clea n Wate r Ac t (CWA ) 3

3 US C 125 1 c t sej

. 3 3 CF R Par t 33 0 Y e s 

### Regulates discharg e o f dredge d o r fil l material s int o 

### water s o f the Unite d States

. Substantiv e requirement s o f 

## portions o f Nationwid e Permi t No

. 3 8 (Genera l an d Specifi c Conditions ) ar e applicabl e t o OU 7 remedia l activitie s conducte d withi n water s o f th e Unite d States

. The remedial action s wil l b e designe d t o compl y wit h these requirements

. _________

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# TABL E 4- 3 

# Summar y O f Potentia l Location-Specifi c ARAR S (continued ) OU 7 - Apach e Tailin g
Standard

, Requirementente r
Fis h an d Wildlif e Coordinatio n Ac t 

### 1 6

US C § 66 1 e t sea

. 4 0 CFR § 6.30 2 

### Require s coordinatio n wit h federa l and stat e agencie s t o provid e protectio n o f fis h an d wildlif e i n water resourc e developmen t programs ; regulates action s tha t impound

, divert

, control

, or modif y an y bod y o f water

. However

, 

### propose d remedia l actio n activitie s i n OU 7 wil l no t affec t fis h o r wildlife

. I f i t appear s tha t remedia l activitie s ma y impac t wildlif e resources , EP A wil l coordinat e wit h bot h th e U.S

. Fis h an d Wildlif e Servic e an d th e Colorad o 

### Departmen t o f Natura l Resources

. Endangere d Specie s Ac t 

### 16USC§I531etseg

.

50CFR5§200and40 2 N

o N

o Provides

protectio n fo r threatene d an d endangere d specie s 

### and thei r habitats

. However

, site-specifi c studie s di d not documen t th e presence o f threatene d o r endangere d species

. I f threatene d o r endangere d species are encountere d durin g remedial activitie s i n OU7

, the n requirement s o f Ac t woul d b e applicable

. Wildernes s Ac t 1 6

US C 1311,1 6 US C 66 8 50CFR53.50CFR2 7 

### N

o N

o Limit

s activitie s withi n area s designate d a s wildernes s 

### area s o r Nationa l Wildlif e Refug e Systems

. 

# m Colorad o Registe r o f Histori c Place s 

### CR

S § § 24-80.1-10 1 t o 108 Y e s Establishe s requirement s fo r protectin g propertie s o f historica l significance

. Ma y b e applicabl e i f remedia l 

### action s impac t an y propert y liste d on th e Registe r o f Histori c Places

. Colorad o Historical

, Prehistorical

, and Archaeologica l Resource s Act 

### CR S § 5 24-80-401 t o 410 130 1 t o 130 5 

### N

o 

## Yes Concern

s historical

, prehistorical

, an d archaeologica l

resources ; applie s onl y t o area s owne d b y th e Stat e o r it s politica l subdivisions

. Ma y b e relevan t and appropriat e i f 

### remedia l actio n impact s a n archaeologica l site

.' Colorad o Specie s o f Specia l Concer n and Specie s o f 

### Undetermine d Statu s 

### Colorad

o Divisio n o f Wildlif e Administrativ e Directiv e E-l

, 

## 1985
, modifie d N

o N

o 

### Protect

s specie s liste d on the Colorad o Divisio n o f Wildlif e generated lis t Urges coordinatio n wit h th e 

## Division o f Wildlif e i f wildlif e specie s ar e t o b e impacted

. N o evidence o f specie s o f special concer n hav e bee n 

## identifie d a t thi s site

.
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# Summar y O f Potentia l Location-Specifi c ARAR S (continued ) OU7

- Apach e Tailin g

Nongame

, Endangere d o r 

### Threatene d Specie s Ac t 

### CR

S § 5 33-2-10 1 t o 10 8 N

o 

### N

o Standard

s fo r regulatio n o f nongam e wildlif e an d 

## threatene d an d endangere d species

. Site-specifi c studie s di d no t documen t th e presenc e o f threatene d o r endangere d species

. I f threatene d o r endangere d specie s 

### ar e encountered durin g remedia l activitie s i n OU7

, the n requirement s o f Ac t wil l b e applicable

. Colorad o Natura l Area s Colorad

o Revise d Statutes

, 

### Titl e 3 3 Articl e 33
, 

## Sectio n 10 4 N

o N

o Maintain

s a lis t o f plan t specie s o f "specia l concern. " 

### Althoug h no t protecte d b y Stat e statue
, coordinatio n wit h Divisio n o f Park s an d Outdoor Recreatio n i s recommende d i f activitie s wil l impac t liste d species

. Colorad o Soli d Wast e Disposa l Site s an d Facilitie s Ac t 6

CC R 1007- 2



### 6 CC R 1007-2
, Par t I N

o 

### Yes 

### Establishe s regulation s fo r soli d wast e managemen t facilities

, includin g locatio n standards

. A s th e remedial action s for OU 7 ma y involv e establishmen t o f a soli d wast e disposa l facility

, portion s o f thi s regulatio n ar e potentiall y relevan t an d appropriate

. ____ . __ _

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# Summar y O f Potentia l Action-Specifi c ARAR S OU7-Apach e Tailing s

Soli d Wast e Disposa l Ac t a s 

### amende d b y th e Resourc e Conservatio n an d Recover y Ac t o f 1976(RCRA ) 4 0

CF R Par t 257
, 

### Subpar t A : §257.3- 1 

### Floodplains

, paragrap h (a) ; § 257.3- 7 Air

, paragraph (b ) Yes 

### Selecte d portion s o f Par t 25 7 pertainin g t o floodplain s an d ai r ar e applicable

. Thes e provisions establish criteri a fo r classificatio n o f soli d wast e disposa l facilitie s an d practices

. Th e 

### applicabl e requirement s wil l b e addresse d b y th e remedia l designs

. Hazardou s Material s Transportatio n A c t 4 9

US C §1801-181 3 4 9 CF R 107,171-17 7 N

o N

o Regulates

transportatio n o f hazardou s materials

. Propose d 

### remedia l actio n i n OU 7 wil l b e conducte d wil l no t entai l off-sit e transportatio n o f hazardou s materials

.' \*, t

.. •

, , . •

. .

_ .,-- . 

### Colorad o Ai r Pollutio n Preventio n
and Contro l Act

, Fugitiv e Dus t Contro l Plan/Opacit y Regulatio n No

. I 

### 5

CC R 1001-3 ; Sectio n III.D

. 1

. b,c,d Section s II.D.2.b,c,e,f, g Regulatio n 1 

### Yes 

### Regulatio n No

. I provisions concernin g fugitiv e emission s fo r constructio n activities
, storage an d stockpilin g activities
, hau l roads

, hau l trucks

, an d tailin g pond s are applicabl e ( 5 CC R 1001-3 ; Section s II.D.2.b,c,e,f,g)

. Constructio n activitie s i n OU 7 wil l b e conducte d i n accordanc e wit h a fugitiv e emission s contro l plan

. ______ 

### Colorad o Ai r Pollutio n Preventio n
a n d Contro l Act

, APEN s Regulatio n No

. 3


### Colorad o Ai r Pollutio n Preventio n
an d Contro l Act

, Odor s 

### Regulatio n No

. 2 

### 5

CC R 1001- 5 

### Regulatio n 3

5 CC R 1001- 4 Regulatio n 2 Yes

Y e s 

### Substantiv e requirement s o f a n Ai r Pollutio n Emissio n Notic e 

### (APEN ) ar e applicabl e i f the remova l action s distur b contaminate d soil

. A n APE N wil l be filed

, although permittin g requirement s suc h a s thi s ar e typicall y no t require d under 

### CERCLA

. Applicabl e onl y i f remedia l actio n activitie s caus e objectionabl e 

### odors

. Remedia l action i n OU 7 i s no t expecte d t o produc e odors

.

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## TABL E 4- 4 

# Summar y O f Potentia l Action-Specifi c ARAR S (continued ) OUT-Apach e Tailin g

Colorad o Hazardou s Wast e Regulation s



### Colorad o Soli d Wast e Disposa l Site s an d Facilitie s Ac t



### Colorad o Wate r Qualit y Contro l Act

, Stor m Wate r Discharg e 

## Regulation s Colorad o Mine d Land Reclamatio n A c t 

### 6

CCR1007-3

, Par t 264 : 

## Sectio n 264.3 0 l,(g),(h),(i)

, an d 

# 0) ; Sectio n 264.310
, (aX O 

### throug h (aX4) ; Sectio n 264.310
, (bX O an d (bX5 )



### 6 CC R 1007- 2

5 CC R 1002- 2

CR S 34-32-10 1 t o 12 5 

### Rul e 3 o f Minera l Rule s an d Regulations 

### N

o

Yes

N o Yes 

## Thes e

specifi c provisions o f th e hazardou s wast e regulation s
ma y b e relevan t and appropriat e for conductin g remedia l action s i n OU7

. Specifi c provision s o f Sectio n 264.30 1 concer n run-o n control

, run-of f control

, managemen t o f run-o n an d run-of f contro l systems
, an d win d dispersal

. Thi s regulatio n require s run-of f control fo r th e 100-year
, 24-hou r storm

. Specifi c provisions o f Sectio n 264.31 0 concer n placemen t o f a cove r t o minimiz e infiltration

, minimiz e maintenance
, promot e drainag e 

### an d minimiz e erosion
, an d accommodat e settling

. Post-closur e requirement s are als o include d i n thi s regulatio n to : maintai n integrit y and effectivenes s o f the fina l cove r b y makin g repairs
, a s necessary ; an d preven t erosio n o f th e fina l cover

. ____ ^ 

### Establishe s standard s fo r licensing

, locating

, constructin g an d operatin g soli d wast e facilities

. Thi s regulatio n i s potentiall y relevant an d appropriat e i f th e remedia l action s includ e establishmen t o f a soli d wast e disposa l facility

. Thi s regulatio n 

### include s restriction s an d sit e standard s t o address : protectio n o f th e facilit y fro m wind ; minimizatio n o f runo n fro m upgradien t


### areas ; isolatio n o f th e publi c an d environment ; engineerin g desig n requirements ; an d stabilit y o f th e fina l surface

. Establishe s requirement s fo r stor m wate r discharge s (excep t portion s relatin g t o Site-wid e Surfac e an d Groundwater)

. 

### Substantiv e requirement s fo r stor m water discharges associate d wit h constructio n activitie s ar e applicable

. 

### Regulates al l aspect s o f lan d us e fo r mining
, includin g th e locatio n o f minin g operation s and relate d reclamatio n activitie s
an d other environmental an d socio-economi c impacts

. 

### Substantiv e requirement s o f selecte d portion s o f Rul e 3 regardin g Reclamatio n Measure s (grading

, erosio n an d filtratio n 

### control

, and handlin g o f acid-formin g or toxi c materials) ; Wate r

- Genera l Requirement s (hydrology

, dredg e an d fill

, an d slop e stabilization

, except portions relatin g t o Side-wid e Surfac e an d 

### Groun d Water)

, Wildlife

, an d Revegetatio n ar e potentiall y relevan t an d appropriate

.
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# Summar y O f Potentia l Action-Specifi c ARAR S (continued ) OU 7 - Apach e Tailin g

Colorad o Nois e Abatemen t Ac t CRS5 5

25-12-10 1 t o 10 8 

### Y e s Establishe d maximum permissibl e nois e level s fo r particula r tim e period s an d land use relate d t o constructio n projects

. Regulation s o n th e Collectio n o f Aquati c Lif e 2CCR406-8,Ch

. 13
, 

### Articl e HI

, Sec

. 131 6 

### N

o N

o Requirement

s governin g th e collectio n o f wildlif e fo r scientifi c 

### purposes

. Remedial activities within OU 7 wil l not includ e biologica l monitoring

. __ _

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### Pag e 3 o f 3 MFG

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.

### providin

g environmenta l 

### consultin g an d engineerin g service s 49O O Pear l Eas t Circl e 

### Suit e 3OO W Boulder

. Colorad o 8O3O 1 303/447-182 3 

### Fax:447-183 6 

## McCulle y Rric k &

. Gilman

. me

. 

## Septembe r 23,199 8 M F C Projec t No

. 5344. 2
M s

. Austi n N

. Buckingha m 

## Colorad o Departmen t o f Publi c Healt h an d Environmen t Hazardou s Material s an d Wast e Managemen t Divisio n 430 0 Cherr y Cree k Driv e Sout h Denver

, C O 80246-153 0 

# R E : TRANSMITTA

L O F JUN E 199 8 MONITORIN G DAT A 

# OPERABL E UNI T 7 (OUT )

- APACH E TAILING S 

# CALIFORNI A GULC H SUPERFUN D SITE,LEADVILLE

, COLORAD O 0 2 rr :



### c_

. >

.... , . 

### r o C O



## • n C O


## Dea r Austin : McCulley

, Fric k & Gilman

, Inc

. (MFG ) i s please d t o provid e thre e copie s o f table s summarizin g field paramete r measurement s an d validate d surfac e wate r an d groundwate r qualit y dat a fro m th e Novembe r 

## 1996
, Jun e 1997
, Novembe r 199 7 an d Jun e 1998 monitorin g event s a t th e Apach e Tailing s area

. Th e attache d surfac e wate r qualit y dat a tabl e include s informatio n fo r statio n TPD

, a sprin g wher e groundwate r discharge s t o th e surfac e i n th e vicinit y o f th e southwester n corne r o f forme r Tailing s Pon d No.3

. Als o enclose d i s a tabl e whic h summarizes monthl y wate r leve l measurement s mad e i n monitorin g well s an d piezometer s within an d nea r th e Apach e Tailing s Impoundmen t sinc e Novembe r 1996

. I f yo u hav e an y 

## questions
, pleas e d o no t hesitat e t o call

. 

## Sincerely

, 

# MCCULLEY

, FRIC K & GILMAN

, INC

.

GSD/BVC/sj b attachmen t



### cc : Rus s Alien

, CDPH E To m Hesemann

. RM C Rober t Litle

, Asarc o Paul Rosasco

, EMS I Gar y Slifka

, Asarco Rebecc a Thomas

, EP A Sher m Worthington

. SM I 

## Benc

e V

. Close

, P.E

. Associat e Engineer/Geohydrologis t

J:\S3*4\COMM\ABUCKI3.LT

R

### Table ! 

### GROUNDWATE R QUALIT Y DAT A (11/96, 6/97,11/9 7 AN D 6/98 ) O U 7 - APACH E TAILING S

SAMPL E LOCATIO N

————— — " "

— — ——— — HYPROGEOLOGI

C UNI T L A B NUMBE R

~ ———— —

_ ————— — SAMPL E

NUMBE R

— — —————— — SAMPL E DAT E

______ ~ Fiel d Parameter s' ——— — ——— — - ——— — p H (units ) Conductivit y @25C(umhos/cm

) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) .Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e as N (mg/L ) Nitrate/Nitrit e as N (mg/L )' Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (me/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) 3ther Wate r Qualit y Parameter s Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation-Anio n Balance (% ) Dissolve d Organi c Carbon (DOC ) (mg/L ) Hardnes s as CaC0 3 (mg/L ) Hydroxid e as CaCO 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e fTSS ) (me/L ) L11863-2 0 M-AP1TMW1-OI-1124 M 11/14/9 6

3.2 2 348 0
2 U 2 U jj\j 9 0. 1 U 40 0 0.0 1 U J 0.8 1 0. 8 J 2 0 U 20 1 440 0 0.00 5 U J 0.03 2 J

0.0 2 U 0.25 6 0.4 2 46 0 0.57 5 36 9 21 7
2 U 12. 1 2 J 297 0 2 U 695 0 L142434 6

M-APITMWI-OMlJt T 06/12/9 7
3.9 2 326 0
2 U 2 U 41 9 8. 7 O. I J 27 4 0.0 7 0.6 1 0.6 1 5 1 3 186 0 0.022 ) 0.00 5 U J

0.00 2 J 0.12 7 0.2 5 34. 3 0.29 7 79. 5 83. 8
2 U 1 6 1 J 217 0 2 U 382 0 J L16520-0

4 M-APITMWI-OMIKW

7 11/20/9 7
3.9 0 411 0
2 U 2 U 49 4 1 2 N M 35 1 N M N M 0.0 2 U 5 1 5 363 0 0.02 0 N M

0.00 1 U 0.26 0 0.2 5 29 4 0.22 0 26 6 18 2
2 U 10. 7 N M 268 0 2 U 5290

— — — N M L19059-04

M-APITMWI-«14M1 | 06/18/9 8
2.6 1 433 0
2 U 2 U 37 2 1 2 N M 25 8 N M N M 0.0 3 J 3. 9 13. 4 286 0 N M N M

0.00 5 U 0.16 1 0.3 6 10 6 0.57 5 21 2 13 4
2 U 4. 2 N M 199 02 U 447 0 .

L11819-0 7 —— — M-AF1TMWMIM1I9 M 11/19/ M

6.4 1 80 3
4 7 2 U 11 8 3 J 0. 1 U 49. 6 0.0 1 U 0.6 2 0.6 2 1. 8 6.6

. 45 0 0.00 8 J 0.00 5 U

0.00 5 U 0.00 2 J 0.0 1 U 0.0 2 J 0.00 1 U 1.5 3 0.9 3
4 7 0. 3 U 1 J 49 9 2 U 72 0

U • Not deaat d « th e tallow ) metho d dmcti n Iha k (MWJ

. J * Eftlnutttf

. 0 » « UiKfcucu d H adBMB d MDL

. N M

- N « memnd

. • " Modiwrhi i wri l AP1TMW } W B nmpM t o Decembe r I9 M mke r d m Novtmte r 19K dwb | th e lo w flo w mm

.

r 1997

. L14243-0 7 M-AP1TMWJ-OMIM 7

6.4 3 76 5
4 8 2 U 10 3 5. 1 0. 1 U 42. 5 0.0 2 J 1.0 4 1.0 6 i: 6 6. 4 410 J 0.00 5 U 0.00 5 U J

0.00 2 U 0.00 1 J 0.0 1 U 0.0 1 J 0.00 0 U 1.4 4 0.7 6
4 8 -3. 7 1 U 43 2 2 U 640 J -LQ J AP1 1 A H u
1297 "MW 2 vhi m L16S20-0 1 M-AP1TMWJ-01.1IM9 7 11/20/9 7
6.2 7 86 0
4 6 2 U 13 2 6 N M 5 2 N M N M 1.3 2 2 7 45 0 N M N M

0.00 1 U 0.02 0 U 0.0 5 U 0.0 5 U 0.00 1 U 1.8 9 0.8 4
4 6 3. 6 N M 54 4 2 U 68 0 N M L19059-0 6

M-AP1TMW2-OI-M«I

| 06/18/9 8
6.0 1 94 0

4 3 2 U 10 8 9 N M 42. 8 N M N M 1.6 8 1. 8 6. 7 37 0 N M N M

0.00 2 U 0.000 6 J 0.0 1 U 0.0 4 J 0.000 4 U 1.8 9 0.5 6
4 3 2. 2 N M 44 6 2 U 69 0 N M

Mcioimici i AP1PZI9

. AP1PZ M m i APIPZI I

JM\9«SAMP\MFGGW.WB I P a p I o f I ] 09/23/9 8

### Tabl e 1 GROUNDWATE R QUALIT Y DAT A (11196, 6/97,11/97 AN D 6/98 ) O U 7 - APACH E TAILING S

HYDROGEOLOGI

C UNI T L A B NUMBE R SAMPL E NUMBE R SAMPL E DAT E Fiel d Parameters p H (units ) Conductivit y ®25 C (umhos/cirt ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e as N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, onh o dissolve d (mg/L ) Metals

, Dissolve d

. Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaCO 3 (mg/L ) Cation-Anio n Balanc e (% ) Dissolve d Organi c Carbon (DOC ) (mg/L ) 

### Hardnes s a s CaCO 3 (mg/L ) Hydroxid e as CaCO 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e (TSS ) (mg/L ) L12145-0 1 M-AnTMW3-M'UI7 M 12/17/9 6
5.5 0 44 1
6 9 2 U 58. 9 9. 4 0. 1 U 22. 2 0.0 1 U 2.5 9 2.5 9 1. 2 4. 9 13 3 0.00 5 U J 0.02 2 J

0.00 2 U 0.00 0 U 0.0 1 U 0.0 1 J 0.00 0 U 0.02 5 0.0 6
6 9 4. 1 1 U 23 8 2 U 30 0 8 J AP1TMW3 *

L I 41434) 3 M-APITMWMMUtT 06/12/9 7

6.4 1 42 0
7 0 2 U 52. 7 9. 3 0. 1 U 22. 1 0.0 1 U 2.7 9 2.7 9 1. 1 5. 1 J 13 0 J 0.016 1 0.00 9 J

0.00 2 U 0.00 0 U 0.0 1 U 0.0 1 U 0.00 0 U 0.00 8 J 0.0 6
7 0 1. 2 1 U 22 3 2 U 290 J 6 1 Non e

NofSunpln l 11197 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

NMSmp M 6/9 8 N M N M N M N M N M PIIV I N M PtIV I N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M AP1TMW 7 L11808-0 2 M-AP1TMW74I-HII

M 11/18/9 6
7.4 6 73 6
121 2 U 94. 1 9 0. 1 U 1 0 f t jy. o 0.0 1 U 2.6 5 2.6 5 1.3 4. 3 frn Z j U 0.01 5 J 0.00 5 U

0.00 1 U 0.00 0 U 0.0 1 U 0.01 U 0.00 0 U 0.00 5 U 0.01 U

121 0. 5 1 U 39 9 2 U 52 0 5 U LI4258-0 4

M-APlTMWT-OMIW

r 06/13/9 ?

^

•

. 7.4 1 80 5
11 8 2 U 89. 5 11. 8 0. 1 U 38. 2 0.0 1 U 2.5 4 2.5 4 1.3 4. 3 22 0 0.01 5 J

. 0.00 8 J

0.00 1 J 0.00 0 J 0.0 1 U 0.0 1 U 0.00 0 J 0.00 5 U 0.0 1 J

11 8 2. 2 1 U 38 1 21 1 52 0 5 U Non e

NMSmp M 11/9 7 N M N M N M N M N M N M N M N M N M

. N M N M N M N M N M N M N M N M N M N M P I M N M N M N M N M N M N M N M N M N M N M N M Non e

MMSunp M 6/9 8 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M • N M Nota :

.

•

. U • No t deaxtt d « 0 * Miami metho d datedo n lin k <MDL)

. I

- Enhnted

. U J • Undetecte d « adme d MDL

. , N M

- N< x mamrcd

. • • Matorini wd l APITMW 3 w u nnp M I n Decembe r 199 6 inke r tfa n Novembe r 199 6 M * th e k w flo w mm

. D M fo r noakorin * wet o NWJA

. HW5 C ml NWJ D coWcor i 11* 6 a d 6/9 7 wer e (mNkfedb r WESTEOlWfcoir e naoaBe n ATIPZM

. APIPZI O in d AP1PZ1 1 wif e tamlh d darfe « iificinbi r 1997

.

J:\53WW8SAMP\MFGGW.WB 2 09/234 1

### Table ! 

### GROUNDWATE R QUALIT Y DAT A (11/96, 6/97,11/97 AN D 6/98 ) O U 7 - APACH E TAILING S

HYDROGEOLOGT

C UNI T L A B NUMBE R SAMPL E NUMBE R

p H (units ) Conductivit y ®25 C (umhos/cm ) Major Constituen t an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e as N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (nw/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Qlh« r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation-Anio n Balance (% ) Dissolve d Organi c Carbo n (DO Q (mg/L ) Hardnes s as CaC0 3 (mg/L ) Hydroxid e as CaC0 3 (mg/L ) Residue

, Filterabl e (IDS ) (mg/L ) Residue

. Non-Filterabl e (TSS 1 (mg/L ) L1I863-22 M-AP1TMW9-M-11M

M 11/24/9 6 6.5 5 953 0
10 1 2 U 41 1 1 1 0. 9

. 209 2 0.0 5 J 0.0 2 U 0.0 2 U 7 0 6 J 910 0 0.00 5 U J 0.02 5 J

0.0 2 U 0.00 8 I 0. 1 U 28. 5 0.00 4 U 6.5 1 0. 1 U

10 1 0. 7 1 2 963 0 2 U 1220 0 8 J APITMW

* L14258-1 S M-AP1TMWOMHt 7 06/14/9 7

6.6 2 876 0
9 4 2 U 41 0 7 J 1 182 0 0.0 1 U 0.0 2 U 0.0 2 U 6 1 6 1 906 0 0.03 4 J 0.00 5 U J

0.0 1 J 0.00 2 J O.I V 21. 1 0.00 2 U 13. 3 0. 4 J

9 4 -5. 1 9 851 0 2 U 11800 6 1 Non e

N o t Swip M 11/9 7 N M N M N M N M N M • N M M M PfiV I N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

N o t Smplt d 6/9 8 N M N M N M N M N M M M N M N M N M N M N M rviv i N M N M P« M N M I N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M AP1TMW11 S Toll! TM L11S63- U M-AP1TMW I IS4M1M K 11/24/9 6
6.5 0 667 0
38 3 2 U 44 3 6 0. 3 J 122 8 0.0 8 J

n o j u.o ^ 0.9 2 7 0 2 4 560 0 0.00 7 J 0.00 5 U J

0.0 2 U 0.04 0 0.0 4 U 10. 1 0.00 4 U 65. 6 65. 1
38 3 2. 9 4 J 615 0 2 U 780 0 5 2 L142S8-1 7

M-APtTMWtlS-OM14» 7 06/14/9 7
6.3 2 662 0
18 1 2 U 43 2 7 J 0. 1 J 117 0 0.0 5 1.8 6 1.8 6 6 7 1 9 747 0 0.28 6 0.00 7 J

0.00 5 J 0.04 0 0.0 5 U 216 0.02 6 49. 1 51. 3
18 1 -8. 1 4 J 589 0 2 U 8810 3 0 L16549-1 4

M-AMTMW I 1fr«|. | 1239 7 11/23/9 7

6.4 7 522 0
42 8 2 U 42 0 8 N M 103 0 N M N M 1.2 6 6 2 2 3 480 0 N M N M

0.00 1 U 0.04 0 0.7 7
n A O u.o v 0.00 4 43. 4

e n o JV.O
42 8 1. 3 N M 528 0 2 U 780 0 N M L19080-1

3 M-APITMWllSlMMl l 

### 06/21/9 8
6.2 4 718 0
47 4 2 U 45 0 6 N M 115 0 N M N M 2.0 9 63. 3 26. 6 552 0 N M N M

0.0 2 U 0.08 7 0.3 9 0.0 9 0.000 6 J 68. 8 78. 4
47 4 0. 4 N M 585 0 2 U 846 0 N M
Hour. V

- Not detecte d « 0 * tadlcro ) metho d dcKtf m Ita k (MDU

. J-E«lmned

. U J • UmtaecialiiatkBau l

MDL

. N M • No t Bwuwcd

. • " Mmtarin t wd l APITMW 3 wt i nmpto l l a Dccttnber 199 6 nite r *K > Mpvembc f 199 6 dnriii f it e lo w fle w m«

. Ptennae n AP1PZI9

. APIFZ M in d APIPZ2 I wo e tattl M ddtta f Stamibc r 1997

.

t\5344\9ISAMP\MFGGW.'WB l Tiff 3 ef 13 09/J3/ M

### Tabl e 1 

### GROUNDWATER QUALIT Y DAT A (11/96,6/97,11/9 7 AN D 6/98 ) O U 7 - APACH E TAILING S

HYDROGEOLOGI

C UNI T L A B NUMBE R SAMPL E NUMBER SAMPL E DAT E p H (units ) Conductivit y ®25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e as N (mg/L ) Nitrate/Nitrit e as N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) 

### Phosphorus

, orth o dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L )

, Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y as CaC0 3 (mg/L ) Caiion-Anio n Balance (% ) Dissolve d Organi c Carbon (DOC ) (mg/L ) Hardnes s a s CaCO 3 (mg/L ) Hydroxid e a s CaCO 3 (mg/L ) Residue

. Filterabl e (IDS ) (mg/L ) Residu e Non-Filterabl e (TSS ) (mc/L l L11863-1 7 M-APITMW11M1.11M

K 11/24/9 6
3.8 4 121 0
5 7 2 U 13 4 1 J 0. 1 J 67. 1 0.0 1 U J 6. 3 6. 3 2. 8 5.1 60 0 0.00 5 U J 0.00 5 U J

0.00 5 U 0.07 1 0.0 1 U 4.5 5 0.08 6 18. 7 30. 6
5 7 2. 9 2 J 61 1 2 U 100 0 8 J Alliitflm M

L I 4258-1 6 M-AFlTMWUI>41-«1tf

7 06/14/9 7
6.31 137 5
7 1 2 U 16 4 2. 1 J 0. 1 J 80. 9 0.0 1 U 0.0 2 U 0.0 2 U 3 5. 8 73 0 0.02 6 0.0 5 J

0.00 3 J 0.07 1 0.0 1 U 6.5 6 0.10 8 22. 5 33. 4
7 1 3. 9 1 J 74 2 2 U 122 0 8 J U

6549-1 * l*AflTMW1ID-01-IIJ3» 7 11/23/9 7
6.9 3 113 4
7 4 2 U 15 2 2 N M 7 3 N M N M 0.0 2 U 2. 9 4.6 66 0 0.01 0 U N M

0.00 1 0.06 7 0.0 1 5.6 7 0.11 5 1 8 31. 4
7 4 3. 4 N M 68 0 2 U 102 0 N M L19080-1

5 M-AMTMWllMI-Ma i 06/21/9 *

6.4 2 152 0
5 7 2 0 16 6 1 J N M 80.3 N M N M 0.2 3 2. 7 4. 1 73 0 N M N M

0.00 5 U 0.07 2 0.0 1 U 8.4 5 0.09 8 21. 8 36. 1
5 7 5. 2 N M 74 5 2 U 123 0 N M L

I 1863-1 8 M-Ar1TMWIlS-OI-tl24 K 11/24/9 6
6.1 7 843 0
12 2 2 U 40 4 1 4 0. 8 166 1 0.0 8 J 0.0 2 U 0.0 2 J 8 7 1 4 780 0 0.00 5 U J 0.00 5 U J

0.0 5 U 0.02 0 J 0.0 5 U 132. 0 0.01 0 U 16. 9 2.8 2
12 2 0. 3 6 784 0 2 U 1046 0 5 8 AP1TMW12 S

, — •

_____ Tallin n L14258-2 0 M-AP1TMW11S41.4MV

7 06/14/9 7
6.8 4 864 0
5 1 2 U 41 7 7 J 0. 7 166 0 0.0 1 U 0.1 5 0.1 5 O f t 7 D 1 3 757 0 0.19 3 0.00 5 U J

0.0 2 U 0.00 4 U 0. 1 U 20 1 0.00 9 J 17. 2 2.8
5 1 3. 6 6 787 0 2 U 11100 4 0 L16549-1 7

M-AP1TMW1JS4I-1IH» 7

6.2 1 680 0
5 3 2 U 41 2 1 4 M M P* M 160 0 N M M M

. IN M 0.5 8 U 9 8 1 2 7530 M M rtpf l N M

0.00 3 0.03 0 U 0. 1 22 1 0.00 6 1 8 3. 1
5 3 2. 4 N M 7610 2 U 1070 0 N M L19080-1

2 M-AnTMWI2S4l-»Ml

t

5.5 9 935 0
1 4 2 U 38 6 1 3 N M 162 0 N M N M i N M 0.1 6

n o Q yo. y 11. 7 769 0 N M N M

0.0 2 U 0.00 4 U 0.0 5 U 21 2 0.00 4 U 17.3 3.0 9
1 4 1. 8 N M 762 0 2 U 1170 0 N M
Nwa : U

- M M dctecM d «tt a tadtcne d metho d .toeoto a Da k (MDL)

. J

. Enhnted

. U J • UndetectedMcBknmdMDL

. N M

- N « wound

. • • Monhorii f wr t APITMW 3 w u ampfe d t a Decembe r 199 6 nttar A n Novembe r 199 6 dnrfa f di e lo w (Vn r mm

. D m fi v mdwlii t wdl f NWJA

, NW5 C n d NWJ D ctOeatt I t/ M n d «V W xtr e pravkfa d b j WESTEC ; «W T d n m m e nltdntd

. naomaai AP1FZI*

. AP1FZ2 0 ind APIPH I « m tanne d dnh t Sq»rabe r 1997

.

J:\J3W19JSAMinMFOGW.WB I Pij c 4 o f 1 3 0903/9 8

### Tabl e 1 

### GROUNDWATE R QUALIT Y DAT A ai/96,6/97,11/9 7 AN D «/98 ) O U 7 - APACH E TAILING S



## _ _ _ HYDROGEOLOG1 C

UNI T

__ _ L A B NUMBE R " ——— — SAMPL E NUMBE R SAMPL E DAT E p H (units ) Conductivit y @25 C (umhos/cm ) 4ajo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e as N (mg/L ) » Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) 

### Phosphorus

, orth o dissolve d (mg/L ) letals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L )

. . . Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Mher Wate r Qualit y Parameters Tota l Alkalinit y a s CaCO 3 (mg/L ) Cation-Anio n Balance

. (% ) Dissolve d Organi c Carbo n (DO Q (mg/L ) Hardnes s a s CaC0 3 (mg/L ) Hydroxid e a s CaC0 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e (TSS ) ftng/L ) L11863-2 1 KMP1TMW1UVOI-IU4 K 11/24/9 6

5.4 9 178 0
2 U 2 U 19 6 2 J 0. 1 U 101. 0 0.0 2 J 6. 5 6. 5 6. 6 9. 9 103 0 0.01 4 J 0.00 5 U J

0.00 5 U 0.03 4 0.0 4 J 23. 7 0.01 9 37. 2 19. 0
2 U 2. 4 3 J 90 5 2 U 155 0 5 4 Alluviu m

L i L 4jM0* l ^ M-AP1TMWUD41414* ? 06/14/9 7
6.5 2 175 0
1 4 2 U 11 3 2. 3 J O. I U 86. 8 0.0 1 U 0.2 2 0.2 2 6 11. 7 102 0 0.03 5 J 0.01 1 J

0.00 4 J 0.00 2 0.0 1 U 16 3 0.00 1 J 46. 1 27. 1
1 4 9. 4 2 J 63 9 2 U 176 0 10 6 MQaw

M-Af1TMWtlIM».112M 7 11/23/9 7
6.1 0 125 2
1 5 2 U 96. 3 2 N M 69. 9 N M N M 0.2 2 U 5. 1 11. 3 80 0 N M N M

0.00 1 ti l 0.00 8 0.0 1 U 13 9 0.00 1' 36. 3 2 0
1 5 J 11. 8 N M 52 8 2 U 127 0 N M L190804

M M-AP1TMWI2D-01-9M2 1 06/21/9 8
6.0 1 162 0

6 J 2 U 79. 2 3 J N M 58. 9 N M N M 0.2 2 4. 9 6. 3 65 0 N M N M

0.00 6 J 0.000 4 U 0.0 1 U 10 7 0.000 5 J 31. 4 17. 9
6 J 1 2 N M 44 0 2 U 121 0 N M AP1TMW13 S

L11819-0 2 MWIP1TMWUS4MIMM 11/19/9 6
6.8 8 68 8
8 6 2 U 82. 2 2 J 0. 1 U 33. 5 0.0 1 U 0.0 4 J 0.0 4 J 1. 3 2. 5 *M A' 0.00 5 U 0.00 5 U J

0.00 5 U 0.07 7 0.0 1 J 0.0 1 U 0.02 3 0.28 5 1 1
8 6 0. 6 U 1 J 34 3 2 U 46 0 L14258-1 8

M-AP1TMWIJMMI49 7 06/14/9 7
7.1 6 45 3
10 8 2 U 54. 8 1. 2 J 0. 1 J 22. 6 0.0 1 U 0.0 2 U 0.0 2 U 1. 1 2 14 0 0.01 6 J 0.00 5 U J

0.00 1 J 0.03 4 0.0 1 U 0.0 8 0.03 1 0.20 9 f J M

10 8 -2. 1 1 U 23 0 2 U 33 0 L16520-0

8 M-AP1TMWIJMM1JW

7 11/20/9 7
6.5 4 61 2
9 2 2 U 73. 8 1 N M 30. 5 N M N M 0.0 2 U 1.3 2.5 23 0 N M N M

0.00 1 U 0.07 1 0.0 1 U 0.0 2 0.03 7 0.11 8 7. 4
9 2 1. 5 U N M 310 2 U Aff\ L19059-1 1

M-APITMWUS41-9M1 9 06/19/9 8
6.4 8 66 4
11 5 2 U 69. 2 1 N M 29. 3 N M N M 0.0 2 U 1. 3 2. 2 19 0 N M N M

0.00 2 U 0.039 4 0.0 1 U 0.4 2 0.048 8

. 0.26 4 7.5 2
11 5 -0. 8 N M 29 3 2 ti 37 0
Haa: :

. V

- N M detecte d M th e bdktte d metho d deuetkm nm k (MDL)

. J-Eatanttd

. V I

- Undetecte d K attained MDL

. N M

- Not rawed

. » • MMkorta i wri t AP1TMW 3 wi i nmpte d t a Decembe r 199 6 ratter d m Novembe r 199 6 <M « di e to w flo w even

. D m for nMkorii « wef t HW3A

. NWJ C ind NWJ D oHhde d 11/9 6 ai d 6W 7 we n pimHdc d b y WESTEC : «9 7 4 n m m nlktaed

. Ptenme m APIPZ19

, AP1PZ2 0 an d AP1PZ2 I wer e (maile d Atrint Sepmbe r 1997

.

3«\9JSAMP\MFOCJW.WB 2 Pij c 5 o r 1 3

### Tabl e 1 GROUNDWATER QUALIT Y DAT A (11/96,6/97,11/9 7 AN D 6/98 ) O U 7 - APACH E TAILING S

HYDROGEOLOG1 C

UNI T L A B NUMBE R " —————— — SAMPL E NUMBE R

— — ————— —

— —— — — SAMPL E DAT E Fiel d Parameter s " ——— — —————— — p H (units ) Conductivit y ®25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e as N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (mt/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameters Tota l Alkalinit y a s CaCO 3 (mg/L ) Cation-Anio n Balance (% ) Dissolve d Organi c Carbon (DOC ) (mg/L ; Hardnes s a s CaCO 3 (mg/L ) Hydroxid e as CaC0 3 (mg/L ) 

### Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e fTSS ) (me/L ) > L11819-0 1 M-AF1TMWI3MM1I» M 11/19/9 *

7.1 9 93 8
12 3 2 U 12 0 3 1 O. I U 51. 3 0.0 1 U 0.2 6 0.2 6 1.5 6. 4 37 0 0.00 7 i 0.00 5 U J

0.00 5 U 0.00 2 J 0.0 1 U 0.0 1 J 0.00 1 U 0.30 4 0.0 1 U

12 3 1 I U 51 1 2 U 67 0 IP1TMW13 D AOt

i L142S8-1 9 M-APITMWHMMM

H M/14/9 7
7.0 8 80 0
12 2 2 U 11 1 2. 3 J 0. 1 U 48. 5 0.0 1 U 0. 2 0. 2 1. 4 5. 5 35 0 0.01 7 J 0.00 5 U J

0.00 1 U 0.00 0 J 0.0 1 U 0.0 1 U 0.00 0 J 0.04 3 0.0 1 J

12 2 -0. 3 1 U 47 7 2 U 68 0 vh n

. non e NM&mpfe d 11/9 7 N M N M N M N M N M N M N M N M N M I t M N M i N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M ' N M N M Non e

M M Smf M X/t t

——— — =2 5 ——— — N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M — ^^~«

— i«<^^—

— L1184S-1 5 M-AP1TMWI4S.4MIM

M 11/M/ M
2.1 7 2819 0
2 U 2 U 51 0 6 0. 1 U 51 0 0.0 1 U J 0. 4 U 0. 4 U 3 0 U 3 0 U 6080 0 68.80 0 J 4 9 J

48. 9 10.20 0 4 7 2716 7 0.09 0 J 77 3 163 9
2 U 11. 7 11 2 337 0 2 U 103390

— — — »»• •
U • No t dcttcu d t t th e Wlott d metho d **edo » lin k (MDl)

. I-EMmmd

. J--Eflfm«ed,HM«Ik>w

. UI-UndeBcudi l atten d MDL

.' • N M * N M mcMwcd

. •
- Monkorta f wd l APITMW 3 wu nnip M I n Decant o I9 K mta r da

. Novembe r 199 6 dntfa|tk e lo w flo w MM

. L142S8-1 1

3.0 2 3350 0
2 U 2 U 47 0 50 0 U 0. 1 U 46 0 0. 5 U 5 5 3 0 U 3 0 U 5740 0 11.50 0 J 31 J

20. 1 7.63 0 4 6 2600 0 0.03 0 J 50 5 142 0
2 U 11.6

. 9 0 307 0 2 U 9590 0 AP1TMW14 S Alluviu m l-t\H7 L16549-0

8 M-AHTMWI4S4>l-tm» 7 

## 11/22/9 7

2.6 7 3000 0
2 U 2 U 51 0 5 0 N M 47 0 N M N M 4 J 3 0 U 3 0 U 6580 0 15.00 0 N M

0.00 1 6.60 0 2 0 2990 0 0.00 5 U 68 2 160 0
2 U 11. 8 N M 3210 2 U 11200 0 N M L19080-O

S M-APITMWI4Stt.wa t 06/20/9 8
1.6 5 3030 0
2 0 U J 2 0 U J 47 0 1 2 N M 47 0 N M N M 0. 9 J 6 0 U 6 0 U 6220 0 N M N M

8. 3 5.3 4 3 0 26500 0.02 0 U 57 1 133 0
2 0 U J 8. 4 N M 311 0 2 0 U 10200 0 J

- N M

nuamn AP1PZI9

. AHPZ2 0 in d APIFP I wt n fcaadc d M * StfMutii

, 1997

.

I:\5344\9tSAMF\MFGGW.WB 2

### Tabl e 1 GROUNDWATE R QUALIT Y DAT A (ll/9«

, 6/97

, 11/9 7 AN D «/98 ) O U 7 - APACH E TAILING S

SAMPL E LOCATIO N HYOROGKOLOGI

C UNI T L A B NUMBER SAMPL E NUMBE R

——————— —'

_ —— — : _____ SAMPL E DAT E

_____ Fiel d Parameters "

~

— ————— — p H (units )

. u

. ^ Con()u Mivit y ®25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) 

### Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) 

### Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfate (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (me/L ) MeUls

, Dissolve d «*Mmg/

M Arseni c (mg/L ) Cadmiu m (mg/L ) 

### Coppe r (mg/L ) Iro n (mg/L ) 

### Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaCO 3 (mg/L ) 

### Cation-Anio n Balance (% ) Dissolve d Organi c Carbo n (DO Q (mg/L ) Hardnes s as CaC0 3 (mg/L ) Hydroxid e a s CaC0 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e fTSS ) (mg/L ) LH845-1 C M-AHTMWMMMIMM 11/20/9 6
4.6 5 243 0
2 U 2 U 216 2 3 0. 4 I 13 7 0.4 8 1 1.7 9 2.2 7 8 U 2 8 J 1590 0.02 2 J 

### 0.00 5 U J

0.00 5 U 0.30 0 0.1 1 47. 4 0.004 ] 21 3 45. 6
2 U 11. 1 21 110 0 2 U 

### 255 0 AP1T

O All u L1425S-0 6 M-APITMWI4IVM.4139 7 06/13/9 7
5.2 6 170 0
2 U 2 U 15 5 23. 1 0. 3 J 96. 2 0. 3 4. 7 5 3. 8 20. 9 102 0 0.03 2 

### 0.00 5 U J

0.00 2 U 0.18 4 0.0 6 25. 1 

### 0.00 5 11 9 29. 5
2 U 10. 3 1 J 78 3 2 U 1710 5 U IW14 D L16549-0 7 M-Ar1TMWI4D-»l-IIII» 7 11/21/9 7

4.0 8 159 1
2 U 2 U 15 6 2 4 N M 84. 1 N M N M 5. 3 J 2.8 19. 8 98 0 0.01 0 U N M

0.00 1 U 0.18 0 0.0 7 16. 6 

### 0.00 3 11 1 2 4
2 U 8. 1 N M 73 6 2 U 160 0 N M L19080-0 1

M-APITMW|4Ml^tC

» 06/20/9 8
4.5 0 149 4

2 U 2 U 17 2 2 4 N M 85. 5 N M N M 4.1 8 2. 8 18. 7 102 0 N M N M

0.00 2 U 0.14 8 0.0 3 J 22. 1 0.00 3 9 5 24. 8
2 U 6. 3 N M 78 1 2 U 167 0 J

- L1180S-0 1 HAFITMWtMMIt M 11/18/9 6
6.6 1 82 6
9 0 2 U 12 6 8 0. 1 U 39. 8 0.0 1 U 2.2 8 2.2 8 2.4 9. 1 36 0 

### 0.016 ) 0.00 5 U J

0.00 1 U 0.00 1 J 0.0 1 U 0.0 3 J 0.00 0 U 

### 0.52 3 0.0 5
9 0 1. 6 2 J 47 9 2 U 64 0 AP1TMW1 5

. Alluvtn m L14243-0 1 —— — M-APITMWIMMU* ? 06/11/9 7

6.6 1 76 9
8 7 2 U 10 7 10. 1 0. 1 U 35. 2 0.0 1 U 2.8 9 2,8 9 1. 1 8. 9 30 0 J 0.01 9 J 

### 0.00 5 U J

0.00 2 U 0.00 0 U 0.0 1 J 0.0 1 U 

## 0.00 0 u 0.01 4 J 0.0 1 J

8 7 0. 8 1 U 41 2 2 U 62 0 J L16549-0

4 M.AP1TMW1S-0|.|IH» 7

_ 11/21/9 7
6.6 7 75 1
8 4 2 U 1A Q 1 2 N M 33. 1 N M N M 2.9 9 J 1. 2 8. 8 32 0

. N M N M

0.00 1 0.00 3 U 0.0 1 U 0.0 1 U 0.00 1 U 0.00 5 U 0.0 2
8 4 2. 3 U N M 40 9 2 U 58 0 L19059-1 0

M-AHTMW1S4MM1 * 06/19/9 8
6.5 2 83 8
8 4 2 U 96. 3 1 3 N M 31. 3 N M N M 3.1 6 1 10.4 29 0 N M N M

0.00 2 U 0.000 4 U 0.0 1 U 0.0 1 U 0.000 4 U 0.01 1 J 0.0 1 J

8 4 -3. 1 N M tff> 2 U 56 0

Now : U • Not detecte d * A c Wlon d metho d detent a lin k (MDL)

. I-Enhiwed

. J

- - EKlmmd

, bhM d tow

. Ul-UndettcttdltMttallwIMDL

.' , NM-NMnonml

. • " Monhorfci f «d l AMTMW 3 M I nmp W I n Dozmbc r 199 6 mhe r d m Novanta r 199 6 dicta f Ik e k m fla w nan

. D m fa r mootwfa f «ri b NWJA

, NW3C»i d NWJDcotkntd 11/96a d W 7 woepnvMe d b y WESTE Q «WTdnm > Haamatn AP1PZI9,APIPZ2 0

in d APIPZ2 I fa t bnUe d durin g Stptaabt t 1997

.

A5344\9»SAMP\MFGGW.WB 1 CtgeToft ] 09/23/9 8

### Tabl e 1 GROUNDWATER QUALIT Y DAT A (11/96

, 6/97,11/9 7 AN D 6/98 ) 

### O U 7 - APACH E TAILING S

SAMPL E LOCATIO N

______ HYDROGEOLOT.r r

IIN1 T L A B NUMBE R SAMPL E NUMBE R

p H (units ) Conductivit y ®25 C (umhos/cm )

. Major Constituent s and Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e as N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfai e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (me/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y as CaC0 3 <mg/L ) Cation-Anio n Balanc e (% ) Dissolve d Organi c Carbo n (DO Q (mg/L ) Hardnes s a s CaC0 3 (mg/L ) • Hydroxid e a s CaC0 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) 

### Residue

. Non-Filterabl e (TSS ) (me/L i - L11S4M

7 M-AnTMWl«S41-IIM

K 11/20/9 C

6.1 1 509 0
4 1 2 U 39 0 7 0. 2 J 40 0 0.0 2 1 0.0 2 U 0.0 2 U 1 4 1 9 428 0 0.03 5 J 0.01 5 J

0.0 1 J 0.04 1 0.0 3 U 51 3 0.23 4 26 5 19 7
4 1 7. 7 3 J 262 Q 2 U

. 622 0 AP1TMW1C

S 

### Alluviu m - L*l*U9o-fl 9 M-Ar1TMWI«S-*M14» 7 06/14/9 7
6.2 8 433 0
2 6 2 U 38 0 2. 9 0. 1 U 37 5 0.0 1 U 0.0 3 1 0.0 3 J 14. 7 16. 6 309 0 0.03 2 0.00 9 J

0.02 6 J 0.06 2 0.0 3 U 33 5 0.53 9 22 9 16 7
2 6 1 6 2 J 249 0 2 U 557 0 1 6 J L105ZU-U

S M-AMTMWKS-01-I12W

7 11/20/9 7
6.4 0 278 0 

## i s 2 U 27 0 5 N M 23 6 N M N M 0.0 3 11. 4 10. 9 206 0 0.02 0 N M

0.01 8 0.08 0 0.0 5 U 26 1 0.21 3 13 1 92. 3
1 8 15. 5 N M 164 0 2 U 340 0 N M L190S9-1 3

M-AnTMWUS«MMI

t 06/19/ W

5.4 1 346 0
1 0 2 U 25 5 5 N M 21 0 N M N M 0.11 11. 1 10. 7 207 0 N M N M

0.01 6 1 0.01 9 0.0 1 U

1£ £ 0.21 0 12 3 80. 2
1 0 7. 6 N M 150 0 2 U 309 0 AP1TMWK D L I 1845-1 8 M-APITMW16D4I-11M

K 11/20/9 6
6.2 1 313 0
2 7 2 U 29 0 5 0. 1 U 23 4 0.0 2 J 0.0 2 U 0.0 2 U 1 0 1 2 213 0 0.02 1 } 0.00 7 J

0.01 1 J 0.00 8 0.0 2 U 22 0 0.01 9 12 2 9 2
2 7
, 12. 1 2 J 169 0 2 U 347 0 L142584 1

M-AnTMW|CMt.«|4f

7 06/14/9 7
6.4 0 291 0
2 4 2 U 25 9 2. 6 0. 1 U 21 6 0.0 1 U 0.0 4 J 0.0 4 J 9. 3 10.5 193 0 0.18 9 0.01 1 J

0.01 4 J 0.00 7 0.0 2 U 20 1 0.03 1 11 1 85. 1
2 4 12. 4 21 154 0 2 U 323 0

——— — 16 J Non e

NMSmp M

N M M M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M FtNl N M Non e

N o t SunpM a 6/9 0 N M M M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

Mont :

. U • N M detecte d x dt t todfcm d metho d tetoto o Ita k (MDL)

. I

- eahmal

. 0 1 • Undetecte d « Ottawa ) MDL

. N M

- No t mnjorrd

. •«Mo«ll«ln»»d1A?lTMW3wiMmpWhDKOTbwl»«nd»ihM N D M far mxtHl*t vri b NW3A

, NWS C at NWSDoMoe d limmt t W «er e pnwUe d b y WESTEC:«W4«ii«i«xwHd«ed

. • AflPZIf

. APIPZ M rai l APIPZJ I « m tanl M *rt « S+*mtor 1997

.

l:\5344t9SSAMP\MFGGW.WB l Piielofl 3 09/13/9t

### Tabl e 1 GROUNDWATER QUALIT Y DAT A (11/96, 6/97,11/97 AN D 6/98 ) OU7-APACH E TAILING S

HYDROGEOLOGI

C UNI T L A B NUMBER SAMPL E NUMBE R SAMPL E DAT E p H (uniis ) Conductivit y @25 C (umhos/cm ) lajo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e as N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (mg/L ) leials

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Hhe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaCO 3 (mg/L ) Cation-Anio n Balanc e (% ) Dissolve d Organi c Carbon (DO Q (mg/L ) Hardnes s as CaC0 3 (mg/L ) Hydroxid e as CaCO 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e (TSS ) (mg/L ) 11/9 6

WEL L

NO T

INSTALLE D L14258-O

Z M-AP1TMWI7-M-4I39 7 06/13/9 7
6.7 9 202 0
5 7 2 U 35 8 17.2 0. 1 U 78. 2 0. 1 3.0 3 3.1 3 3. 9 44. 2 1130 0.01 4 ] 0.00 7 J

0.00 2 U 0.00 1 J 0.0 1 U 0.1 3 0.00 3 1.3 1 0.0 2 J

5 7 1. 7 3 1 122 0 2 U 189 0 2 2 LI6549-O1

M-AMTMWI7-01-IIZW

7 

## u/xzm

5.9 1 196 5
4 5 2 U 35 3 1 8 N M 75. 5 N M N M 3.6 6 U 3. 5 45. 8 1190 N M N M

0.00 1 U 0.00 3 U 0.0 1 U 0.3 7 0.00 1 U 1.5 5 0.0 3
4 5 I . I U N M 119 0 2 U 192 0 N M L190804

2 M-AF1TMW1741-4M3 * 06/20/9 8
5.8 6 178 0

4 7 2 U 38 5 2 0 N M 79. 2 N M N M 3.3 2 2. 6 44. 1 1210 N M N M

0.00 2 U 0.000 4 0.0 1 U 0.0 2 J 0.000 4 U 0.76 1 0.0 1 J

4 7 1.3 N M

. 129 0 2 U 202 0 J

- N M 11/9 6

WEL L

NO T

INSTALLE D AP1TMW

U

. ____ Alluviu m L14258-0 7 MWkPITMWIMMI

W 06/13/9 7
6.9 5 136 0
10 6 2 U 14 9 41 0. 1 J 60. 8 0.0 1 U 1.1 3 1.1 3 4. 8 43. 2 55 0 0.01 9 1 0.00 5 U l

0.00 2 U 0.06 0 0.0 1 U 0.0 1 } 0.00 0 U 0.10 5 20. 1
10 6 0. 6 1 J 62 2 2 U 101 0 18 4 Non e

N o t Sniffe d (Dry )

____ 11/9 7

____ M M r* M N M ri M N M P< M N M P i M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M 119059-1

5 M-APlTMWIMMi« » 06/19/9 8
6.2 3 173 5
9 3 2 U 17 1 3 2 N M 70. 1 N M N M 1.2 7 5. 5 61. 9 73 0 N M N M

0.00 2 U 0.079 8 0.0 1 U 0.0 1 U 0.000 4 U 0.00 5 U 25. 9
9 3 •0. 6 N M 71 6 2 U 1190 N M
NOBH : U

- N M denie d « d a Mfcm d metlm i 4octk » lin k (MDL)

. I-Ettimud

. J.-E«lm»»d,M»edlo.

. U J

- Undeuot d i t atinatt d MDL

. N M

- Not motored

.' . • « Monhorta j we d AP1TMW 3 w « simp W I n Decembe r 199 6 inke r d m Novembe r 199 6 darted * lo w (lo w event

. D M fa r monfeoriii i ««ll t NW5A

, NW3Cin j NWJD aitttati 11*6an d V9 1 werepravide d b y WESTE Q «V97dn m n nlldned

. IAPIFZI*

. APIPZ M in d APIPZ M w m hnl M dwta f SepMbe r 1997

.

>344\9>SAMP\MFGGW.WB 2 P i j e 9 o f 1 3 09/23/9 1

### Tabl e 1 

### GROUNDWATER QUALIT Y DAT A (ll/9«

, 6m
, 11/9 7 AN D 6V98 ) O U 7 - APACH E TAILING S

HYDROGEOLOGI

C UNI T L A B NUMBE R SAMPL E NUMBE R SAMPLE DAT E p H (units ) Conductivit y ®25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitril e a s N (mg/L ) Nitrat e a s N (mg/L ) Niirate/Nitrit e as N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat c (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) 

### Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y as CaCO 3 (mg/L ) Cation-Anio n Balanc e (% ) Dissolve d Organi c Carbo n (DOC ) (mg/L ) Hardnes s a s CaCO 3 (mg/L ) Hydroxid e a s CaCO 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) AHwula^ M L11819-0 3 MWWIMI-lllf M "/»/ *

———— — 6.0 7 185 0
3 0 2 U 33 6 . 1 3 0. 1 U 74. 4 0.0 1 U 1.7 3 1.7 3 2. 1 41. 3 108 0 0.00 9 J 0.00 6 J

0.00 5 U 0.00 2 J 0.0 1 U 0.0 1 U 0.00 3 1 0.02 4 1 0.0 8
5 0 1. 2 2 J 115 0 2 U 170 0 L14258-O

S M-NW1(414U> T 06/13/9 7
6.3 1 205 0
4 9 2 U 36 3 12. 7 0. 1 U 83.9 0.0 1 U 1.9 4 1.9 4 2.3 43. 4 120 0 0.02 S 0.01 1 J

0.00 2 U 0.000 } 0.0 1 U 0.0 2 J 0.00 3 0.02 2 J 0.0 6
4 9 0. 6 2 J 125 0 2 U 189 0 NolSMp M

11/9 7 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M 

### Non e

NMSoq M



# — «* » N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

. N M N M N M N M N M N M N M N M N M N M N M N M N M N M L11845-2

2 M-NW34I-IIM M 

## lino/96

8,1 9 26 4
10 5 2 U 3 0 5 0. 1 U 11. 7 0.0 1 U J 1.7 8 1.7 8 1. 1 5. 5 J 1 0 J 0.02 4 J 0.00 7 J

0.00 1 U 0.00 0 U 0.0 1 U 0.0 5 U 0.00 0 U 0.00 5 U 0.0 1 U

10 5 2. 9 1 J 12 3 2 U 15 0 ...».!.

_ N W

3

_________ Alluviu m L14258-0 3 M-NWM!-«!4» 7 06/14/9 7
7.6 7 33 0
10 2 2 U 3 0 4. 9 O. I U 12. 7 0.0 1 U 1.7 2 1.7 2 1. 1 4. 9 2 0 J 0.01 3 J 0.00 6 J

0.00 1 J 0.00 0 J 0.0 1 U 0.0 1 J 0.00 0 U 0.00 7 J 0.0 1 )

10 2 1. 2 1 U 12 7 2 U 16 0

———— — « Non e

NotSmp M

N M N M N M N M N M INI M N M N M N M N M rtn N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

NMSonp M 6/9 8 N M N M N M M M I N M M M 

### r* M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

. U • Ho i denie d a t d * Mfcno l metho d iJncakj o ttari t (MM)

. J-Enbmud

. • U J • tMewm d • atona l MDL

. NM-Notm«ur«i

. • • Moototte t «t d AP1TMW 3 w « ampM h Decembe r I99 « nthe r A n Nomibe r 19«<i«rfa f di e low flo w CTCTI

. Dmfermtariivweft.NW3A

.

NWJCMdJNW5Dcoltasr

f 1146M d fin wo*providedbyWES7EC;

tmHammntUaal. 1 APint*

. AP1FZ U m i APIPZ2 1 «t w hnl M <hrk ( Stpmte r 1991.

l:\J344\9SSAMP\MFGGW.WB 2 Pa p I D O f 1 3 0903 m

### Table ! 

### GROUNDWATE R QUALIT Y DAT A (11/96

, 6/97,11/9 7 AN D 6m ) OU7-APACH E TAILING S

HYDROGEOLOG1 C

UNI T L A B NUMBE R SAMPL E NUMBE R SAMPL E DAT E p H (units ) Conductivit y @25 C (umhos/cm ) 4ajo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) 

### Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (mg/L ) totals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) :

. Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) 3the r Wate r Qualit y Parameter s 

### Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation-Anio n Balance (% ) 

### Dissolve d Organi c Carbo n (DOC ) (mg/L ) Hardnes s as CaC0 3 (mg/L ) Hydroxid e as CaCO 3 (mg/L ) 

### Residue

, Filterabl e (IDS ) (mg/L ) ___________

^

_ _____ Alluviu m —— — •
—— — , 

## n / x —— —

PIEZOMETE R

NO T



### INSTALLE D L14243-0

4 M-F34R-01-ei2* 7 M/12/9 7
4.0 9 572 0
2 U 2V 39 3 8. 4 O. I U 37 1 0. 1 U 0.2 U 0.2 U 6 1 2 738 0 1 0.04 6 0.03 6 ]

0.00 7 J 0.27 2 0.1 7 J 112 0 0.64 8 34 4 23 3
2 U -4. 3 2 J 251 0 2 U 8910 L16520-0

2 M-TMR-OMIM M 11/20/9 7
4.5 8 396 0
2 U 2 U 40 2 1 3 N M 30 3 N M N M 0.0 2 U 6 1 4 368 0 N M N M

0.00 1 U 0.29 0 0.0 5 U 54 2 

### 0.20 2 28 3 17 4
2 U 12. 6 N M 

### 225 0 2 U 

### 543 0 N M L19059-0 1

M-H4R-014MI I 06/18/9 1
3.3 4 507 0
2 U 2 U 36 7 1 3 N M 29 8 N M N M 0.0 5 J 7 J 1 5 348 0 N M N M

0.00 5 U 0.19 8 0. 1 U 45 5 0.27 1 27 1 16 6
2 U 11. 6 N M 214 0 2 U 

### 5590 N M L117664 4

L.W5A-61-K111 I 11/12/9 6
6.6 4 302 8
2 5 2 U 47 3 0. 5 U 0. 1 U 28 5 0.01 U 1.1 1 1.1 1 3.02 1 5.7 6 

### 278 0 N M 

### 0.00 6 J

0. 1 U 1.50 0 0. 1 U 0.01 7 J 

### 0.02 0 U 1.1 9 16 5
2 5 -5. 7 1 1 

### 235 0 2 U 

### 353 0 19 8 

### NWS

A

— _______ Alluviu m
____

1 L14196-0 7 LW5A414M1 1 06/11/9 7
6.3 0 31 8
3 2 2 U 43 5 1. 2 0. 1 U 26 5 0.01 U 1.0 9 1.0 9 2. 7 6. 3 218 0 N M N M

0. 1 U 1.12 0 0. 1 U 0.0 2 U 

### 0.02 0 U 21 1 10 5
3 2 0. 6 N M 218 0 2 U 

### 350 0 7 2 L165494

2 M.\VSA-0|.|1U» 7

6.0 0 291 0
3 0 2 U AUt 46 2 - 3 N M 24 9 N M N M 1.1 9 J 2. 6 5. 8 218 0 N M N M

0.00 1 U 0.85 0 0.0 2 U 0.0 2 U 0.00 1 U 0.1 7 75. 6
3 0 0. 3 U N M 218 0 2 U 331 0 N M L190SO-0

3 M-W5A-II14K M 06/20/9 8
5.8 2 264 0
3 5 2 U 47 2 2 J . N M 25 9 N M N M 1.16 2.5 5. 7 213 0 N M N M



### 0.00 5 U 0.62 3 0.01 U 0.01 U 0.001 U 0.0 2 J 60. 3
3 5 1.5 N M 224 0 2 U 

### 349 0 J

- N M
NMH : •

. U

. M m detecte d «th e bdfcra d metho d denetkm lin k (MDL)

. J • Entmud

. J

- - Efllrawd

, Mac d low

. UJ-Undetecte d MCHfaMe d MDL

. • NM-Nonnewwd

. * • Monhorin f wd l APITMW J wi

. nmple d II I Oecenbe r 199 6 rathe r th M Novenfee r 19 M dnfat

, ike lo w flo w event

. D m fo r n*mta>rb | wd b NWJA

, NW5 C m d NW5 D cnnecK d i l« 6 n d (H i wer e provide d byWESTEC;<«7dttimiioinlld«ed

. i AP1PZ19

. AHP2 M m i APIPH I wt n httnlk d oVfa t trjmni,,, 1997

.

153M\98SAMP\MFGGW.WB 2 Pij t I ! o f 1 3 09/13/9 8

### Tabl e 1 GROUNDWATER QUALIT Y DAT A (11/96,6/97

, 11/9 7 AN D 6l9g) OU7-APACH E TAILING S

HYDROGEOLOGI C UNI T L A B NUMBE R SAMPL E NUMBER SAMPL E DAT E . p H (units ) Conductivit y ®25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Flaorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e as N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfate (mg/L ) Phosphorus

, dissolve d (mg/L ) 

### Phosphorus

, onh o dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) • Coppe r (mg/L ) Iro n (mg/L ) • Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaCO S (mg/L ) 

### Cation-Anio n Balance (% ) Dissolve d Organi c Carbo n (DOC ) (mg/L ) Hardnes s a s CaCO 3 (mg/L ) Hydroxid e a s CaCO S (mg/L ) 

### Residue

, Filterabl e (IDS ) (mg/L ) Residue

. Non-Filterabl e (TSS ) tas/L I L11766-Q

5 UWSC4I-MI U 11/12/9 6
7.6 1 210 2
10 5 2 U 36 0 1. 2 J 0. 1 U 17 1 0.0 1 U 0.7 8 0.7 8 2.1 5 J 6.3 4 134 0 N M 0.00 5 J

2 0 U 0.00 8 0.0 3 ) 0.0 1 U 0.00 4 U 0.00 5 U 1.6 3
10 5 3. 3 2 ) 160 0 2 U 211 0 8 1 NW5 C

Bedroc k L14241-0 1 UWJC-«I-»H1 1 06/11/9 7
6.8 8 22 2
10 5 1 7 33 5 1. 7 0. 1 U 15 5 0.0 1 U 0.6 9 0.6 9 1. 7 6 138 0 N M N M

0.0 2 U 0.00 6 0.0 2 U 0.0 2 U 0.00 4 U 1 0 U 10.8
12 2 -2. 8 N M 147 0 2 U 97 0 5 U Non e

NMSmp M 11/9 7 N M N M N M M M N M M M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

NMSwf M 6M N M N M N M N M rtn N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M NWS D L11766-0 2 UW5D-01-MII U 11/12/9 6
7.5 0 106 0
15 5 2 U 16 0 1. 7 J 0. 1 U 69 4 0.0 1 U 0.6 7 0.6 7 1.5 2 J J,vt 49 5 N M 0.007 )

0.0 1 U 0.00 2 U 0.0 1 J 0.0 1 U 0.00 2 U 0.00 5 U 0.0 1 U

15 5 1 4 1 J 68 5 2 U 89 0 L14196- M

UW5M14M1 I 06/11/9 7
7.3 4 11 9
15 6 2 U 15 6 2. 6 0. 1 U 68 2 0.0 1 U 0.6 9 0.6 9 1.3 5. 8 51 0 N M N M

0.0 1 U 0.00 2 U 0.0 1 U 0.0 1 U 0.00 2 U 5 U 0.07 5
15 6

- 1 N M 67 0 2 U 211 0

——— — «• " Non e

NMSunpto d
N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M M M N M N M N M N M
PIIV I N M N M Non e

NotSunpfe d 6/9 8 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

n m N M N M N M N M N M M M N M



# — m — — 1

U

- No t **n* * d * Wfcm d nake d tamt a IW l (MDL>

. U )

- t/MenoB l « i iiliiam l MDL

. • N M * • No t HmttfW i • • Monkoctoi wt d AP1TMW 3 w u nmpfe d t o Dncmbc r I M mke r d m Navcmbe r 199 6 dvto g tt e lo w flo v C 199T

. AP1RI 1 AFirZ U in ) APIR2 I

l:\5344\9ISAMP\MFGCiW.WB 2 P i

r l2ofl 3

### Tabl e 1 GROUNDWATE R QUALIT Y DAT A (11/96,6/97,11/9 7 AN D 6/98 ) O U 7 • APACH E TAILING S

SAMPL E LOCATIO N HYDROGEOLOGI

C UNI T L A B NUMBE R SAMPL E NUMBE R

——— — SAMPLE

DAT E Fiel d Parameter s p H (units ) Conductivit y ®25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) 

### Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) • Nitrat e a s N (mg/L ) Nitrate/Nitrit e as N (mg/L ) Potassiu m (mg/L ) 

### Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) 

### Phosphorus

, orth o dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) 

### Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y as CaCO 3 (mg/L ) 

### Cation-Anlo n Balanc e (% ) Dissolve d Organi c Carbo n (DOC ) (mg/ L Hardnes s a s CaC0 3 (mg/L ) Hydroxid e a s CaC0 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) AP1PZ1 9

AU « ur n L16549-18 M-APlFZI*«t-tU3* T 11/23/9 7
5.3 9 310 0
2 1 ) 2 U 210 1 4 N M 18 5 N M N M 0.2 9 U 6 1 3) 277 0 0.03 0 N M

0.00 1 0.33 0 0.1 7 75 9 0.71 0 14 8 13 7
2 U 16. 5 N M 129 0 2 U 473 0 N M

————— — U9080-1 6 M-APIPZlMl-Md l 04/21/9 8
4.7 5 414 0
2 U 2 U 23 4 1 4 N M 18 9 N M N M 0.1 2 6 U 1 3 J 3140 N M N M

0.0 1 U 0.31 6 0. 2 U 681 0.77 6 17 8 13 5
2 U 1 0 N M 136 0 2 U 499 0 AP1PZ2 0

Alt o tu n L16549-1 5 M-AI>lPZ2ft41.|»39 7 11/23/9 7
7.2 8 183 0
8 9 2 U 34 8 2 N M 11 5 N M N M 0.0 5 U 3. 5 7 129 0 : N M N M

0.00 1 U 0.28 6 0.0 1 U 0.0 3 U 0.03 7 4.5 7 44. 2
8 9 0 N M 134 0 2 U 194 0 N M L19080-1 7

M.AP1PZ20414M2 I 06/21/9 8
6.1 0 181 0
7 6 2 U 28 0 1 J N M 91. 7 N M N M 0.0 3 J 2. 3 5. 3 102 0 N M N M

0.00 5 U 0.18 4 0.0 1 U 0.0 7 0.00 9 2.8 1 32. 8
7 6 0 N M 108 0 2 U 166 0 N M AP1PZ2 1

Alluviu m L16549-1 1 

### M-AWPziwi-nur r 11/23/9 7
5.6 0 233 0

2 U 2 U 16 2 4 N M 94. 3 N M N M 0.2 8 U 10.4 17. 8 180 0 N M N M

0.00 1 U J 0.05 7 0.0 2 U 50 1 0.02 1 78. 1 46. 7
2 U 14. 4 N M 79 3 2 U 293 0 N M L19080-1

8 M-AP1PZ21.01.9M2 1 06/21/9 8
5.5 2 232 0
2 U 2 U 11 0 2 J N M 79. 7 N M N M 0. 2 7. 3 13. 6 144 0 N M N M

0.01 6 ] 0.00 1 U 0.0 5 U 42 2 0.00 1 I 53.2 37, 4
2 U 1 4 N M 60 3 2 U 248 0 N M

U

- N « teear f «th e WfcMr i netted toed n Ita * (MDl)

. 1 - EltlTOMd

. UJ-Undetecte d f t enlnmdMDL

. N M • K M niemied

. .»
- Montofin j *e « APITMW 3 wt l nnp M f a Decembe r 1996mlle r dn n Novembe r 1996 dwtaf itelo w flo w ero«

. D m fo r montarta f wt » NWJA

. NWJ C a t NW5 D collecte d I Il9t n d « W WO T pravUedb y WESTEC : 6W 7 d m w e BM yilkiittd

. Plemneien AP1PZI9

, APIPZ U m d APIPZI I w e bmlle d tota ( Scpwnbe r 1997

.

:\5344\9ISAMP\MFGGW.WB 2 Pi p 1 3 o f 1 3 09/13/ W

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) 

### O U 7 - APACH E TAILING S SAMPL E LOCATIO N

_ _________ SOURC E

_____ L A B NUMBE R " ————— — SAMPL E NUMBE R

— — , ______ SAMPL E DAT E Fiel d Parameter s' —

" —————— — Flo w (cfs ) p H (units ) Conductivit y @25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (ma/L ) Metals

, Dissolve d Arsenic (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Metals

, Tota l Arseni c (mg/L ) •Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameters Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation-Anio n Balanc e (« ) Dissolve d Organi c Carbo n (mg/L ) Hardnes s a s CaC0 3 (mg/L ) Hydroxid e a s CaC0 3 (mg/L ) Residue

. Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e fTSS ) (mg/L ) • U1845-0

5 11/22/9 6

0.9 6 7.1 9 115 0
1 2 2 U 19 5 1. 1 J 0. 4 J 48. 2 0.0 1 J 0.2 7 0.2 8 2. 2 3 0 614 0.00 7 J 0.00 5 U J

0.00 5 U 0.00 9 0.0 1 U 0. 2 0.00 2 J 0.49 6 1.7 6
0.00 5 U 0.00 7 0.0 1 U 1.0 3 0.08 2 0.50 7 1. 8

1 2 3 1 J 68 6 2 U 90 0 

## Apur a

Californi a Gulc h L14201-13 06/10/9 7

5.0 4 3.4 3 916
2 U 2 U 14 5 0. 7 J 0. 4 J 23. 8 0.0 1 U 0. 2 0. 2 2 3 49 0 0.02 8 0.00 5 U J

0.00 5 U 0.06 4 0.4 4 4.1 5 0.33 3 2.6 8 12. 3' 0.00 7 J 0.06 2 0. 4 9.1 1 0.59 2 2.7 6 12. 9
2 U -0. 7 1 U 46 0 2 U 85 0 Non e

N o t Moallore d 11/9 7 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

NMS-mplr f

1.8 2 6.3 5 152 9 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M L11845-0

3 M-CCAM4M122 M 11/22/9 6

0.9 3 6.2 8 116 0
1 2 2 U 19 5 1. 1 J 0. 4 J 49. 3 0.0 1 U J 0.2 6 0.2 6 2. 1 3. 8 61 0 0.00 5 U J 0.00 5 U J

0.00 5 U 0.00 9 0.0 1 U 0.2 1 0.00 1 J 0.55 6 1.9 6
0.00 5 U 0.00 8 0.0 1 U 0.3 3 0.01 4 0.54 3 1.9 4

1 2 3. 7 1 J 69 0 2 U 910 — — — — — — _ _ L1420 T M-AWM l 06/10/ j

6.1 5 3.2 8 92 2
2 U 2 U 13 6 0. 7 J 0. 4 J 23. 1 0.0 1 U 0.5 7 0.5 7 2. 1 2. 9 47 0 J 0.02 6 0.00 5 U J

0.00 5 U 0.07 2 0.4 7 4. 1 0.37 1 2.9 9 13. 3
0.01 4 J 0.06 4 0.4 3 11. 3 1.2 7 2.7 8 12. 5
2 U -1. 1 1 U 43 5 2 U 83 0 A P lUfo n

n UP 2 i l a Gulc h L16511-1 0 M.APUPI-»|.111»* 7 11/19/9 7

2.0 5 5.0 8 220 0
9 2 U 64 4 3 N M 36. 5 N M N M 0.2 2 3. 7 5. 1 164 0 N M N M

0.00 1 U 0.00 6 U 0.0 2 U 0.0 8 0.00 1 0.1 4 0.5 2
0.00 5 U 0.00 6 U 0.0 2 U 0.3 5 0.00 8 0.1 5 0.5 2

9 1. 1 N M 176 0 2 U 242 0 5 U L19036-2 6

M-AFOTMI-Ha T 06/17/9 8
1.9 5 5.5 8 153 6
4 J 2 U 25 5 1 J N M 36. 9 N M N M 0.2 4 2. 9 4. 7 77 0 N M N M

0.00 2 U 0.004 8 0.0 1 U 0.0 4 J 0.0187 0.11 2 0.6 7
0.000 5 U 0.00 4 J 0.0 1 U 0.0 4 J 0.0 2 0.10 7 0.6 3
4 J -0. 6 N M 78 9 2 U 117 0 S V ef t m cubi c fee t pe r second

. N M

- No t manned

. (0.002 )

- Value s I n parenthese s Injlcat e an estimate d vahie

. U

- N M darne d at the Indicate d metho d detectio n llmk (MDL)

. J

- Estimated

. 1

- - Estimated

, biase d tow

. U J * Undetecte d a t estimate d MDl

. J:\5344\98SAMP\MFGSW.WB 2 Page 1 o f 15 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7 - APACH E TAILING S

SOURC E SAMPL E NUMBE R SAMPLE DAT E Flo w (cfs ) p H (units ) Conductivit y @25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L )

. Phosphorus

, orth o dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Metals

, Tota l Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Other Wate r Qualit y Parameter s Tota l Alkalinit y a s CaCO 3 (mg/L ) Cation

- A nio n Balanc e (% ) Dissolve d Organi c Carbo n (mg/L ) Hardnes s a s CaC03 (mg/L ) Hydroxid e a s CaC0 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

, Non-Filterabl e fTSS ) (mfl/L ) • APUP1 B

< Californi a Gulc h NMSuap M 06/10/9 7

4.8 3 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M NMMntan *

11191 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M 6/9 8

N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M APUP1 A •

____________

Californi a Gule h

__________ Non e !

~' —————

— —————— —' Ifet&mi M 06/10/9 7

5.5 3 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

NMMMtora d

_____ 11/9 7 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

— — — N M

————— — Non e NMM«lun d

N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M K T M N M N M N M N M N M N M

ef t • cubi c fee t pe r second

. N M w No t iMASurcd i (0.002 ) • Vita l I n piieixheses indicat e a n ettlnule d value

. U

- No t detecte d a t th e inflate d metho d detectio n limi t (MDL)

. 1 - Estimated

. 1

-

- Estimated

, biase d low

. U J « Undetecte d a t estimate d MD L

J:\5344\98SAMP\MFGSW.WB 2 Pag e 2 o f 1 5 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7 - APACH E TAILING S SAMPL E LOCATIO N

_____ SOURC

E L A B NUMBE R SAMPLF

. NUMBE R

———— — SAMPL E

DAT E Fiel d Parameter s'' —

— ~ ———— — Flo w (cfs ) p H (units ) Conductivit y @25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrii e a s N (mg/L ) Nitrai e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) 

### Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) 

### Phosphorus

, orlh o dissolve d (mg/L ) Metals

, Dissolve d 

### Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) 

### Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) 

### Metals

, Tota l Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) 

### Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameters 

### Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation-Anio n Balanc e (% ) 

### Dissolve d Organi c Carbo n (mg/L ) Hardnes s a s CaC0 3 (mg/L ) Hydroxid e a s CaCO 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e fTSS ) (me/L- V L11845-0

2 M-AFUMMli m 11/22/9 6
0.2 0 6.5 9 116 0
1 2 2 U 19 6 1 J 0. 4 J 50. 1 0.0 1 U J 0.2 6 0.2 6 2. 3 4 60 4 0.00 9 1 0.00 5 U J

0.00 5 U 0.00 9 0.0 1 U 0.1 5 0.00 1 U 0.5 7 1.91

0.00 5 U 0.00 8 0.0 1 U 0.2 4 0.00 9 0.55 1 1. 9
1 2 4. 6 1 U 69 6 2 U 91 0 5 U A

l

. Callfo n L1420M 2 M-AFUM14l m 06/10/9 7
5.7 2 3.3 3 88 9
2 U 2 U 13 9 0. 8 I 0. 4 J 23. 9 0.0 1 U 0. 2 0. 2 2. 1 3 49 0 0.02 1 J 0.00 5 U )

0.00 5 U 

### 0.06 6 0.4 2 3.8 2 

### 0.37 3 2.7 1 12. 3


### 0.00 8 J 0.06 1 0. 4 7.9 1 0.89 4 2.7 9 12. 7

2 U -2. 3 1 U 44 6 2 U 84 0 2 6 ' U P liaGuk h Non e NMMo.llon d 11/9 7 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M M M N M N M N M N M N M N M K I U N M N M N M N M N M N M N M MAM A NMMariUn d 6/9 8 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

N M N M N M N M N M N M N M N M N M N M N M N M N M N M L

I 1845-01 M-AFDNI4I.II12 M 11/22/9 6
1.2 9 6.7 7 115 0

1 1 2 U 19 4 1 J 0. 4 J 48. 9 0.0 1 U J 0.2 5 0.2 5 2. 2 3. 9 63 0 0.00 6 J 0.00 5 U J

0.00 5 U 0.00 7 0.0 1 U 0.1 2 0.00 1 U 0. 4 1.4 8

0.00 5 U 0.00 6 0.0 1 U 0.8 3 0.07 1 0.41 5 1.^ 4

1 1 1. 8 I J 68 6 2 U 89 0



### ——— — L ! ———— — APDN

1

. . ————— — , . Californi a GllM l L14201-0 2 M-AFDW-tMIW r

5.1 6 3.14 89 7

2 U 2 U 13 8 0. 7 J 0. 4 J 23. 9 0.0 1 U 0. 2 0. 2 1. 9 2. 9 47 0 J 0.01 9 J 0.00 5 U J

0.00 5 U 0.06 6 0.4 5 4. 5 0.27 8 2.7 4 12. 6
0.00 5 U 0.06 2 0.41 6.3 8 0.38 7 2.5 5 11. 8
2 U •0. 2 1 U 44 3 2 U 85 0



### ——— — 2 6 Non e

NotMMlton d 11/9 7 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M 

### Non e

NMMoeMon d 6/9 8 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M U K / N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M ef t » cubi c fee t pe r second

. N M • Not nwuuRM

. (0.002 )

- VihM t I n pnentheie s Indicat e i n estlnate d vibe

. U

- Not daeae d u di e IndlCMe d metho d detectio n limi t (MDL)

. 1 - Estlnated

. J

- » Estimated

, blued low

. 

### U J « Undetecte d a t estimate d MDL

. J:\5344\98SAMP\MFGSW.WB 2 Pag e 3 o f 1 5 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7 - APACH E TAILING S

ef t - cubi c fee t pe r second

. N M » N M measured

. (0.002 )

- Values i n paranthetes indicat e a n estimated value

. U

- Not detecte d n di e Indicate d metho d detectio n limi t (MDL)

. 1 - Estlmain)

. 1

- - Estimated

, Mated km

. U J • Undetecte d a t estimate d MDL

. SOURC E L A B NUMBE R SAMPL E NUMBE R

________ SAMPL E DAT E

_____ _ Flo w (cfs) p H (units ) Conductivit y @25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Metals

, Tota l Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Other Wate r Qualit y Parameters Tota l Alkalinit y a s CaCO 3 (mg/L ) Cation-Anio n Balanc e (% ) Dissolve d Organi c Carbo n (mg/L ) Hardnes s a s CaC0 3 (mg/L ) Hydroxid e a s CaCO 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e (TSS ) (me/L ) • L I 1863-0 3 M-SntlMI-IIIJ M 11/23/9 6

0.0 1 7.5 1 261 0
14 1 2 U 43 3 2. 9 0.2 J 17 9 0.0 1 U J 1. 3 1. 3 2. 5 8. 1 160 0 0.00 5 U J 0.00 5 U J

0.00 5 U 0.29 3 0.0 2 U 0.1 1 0.15 5 1.2 5 51. 5
0.00 5 U 0.2 9 0.0 2 U 0.0 7 J 0.16 8 1.1 7 49. 2
14 1 2.5 1 J 182 0 2 U 246 0 1 2 J Sprint

; Non e NocSuq M 06/11/9 7 O(Dry ) N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

NMSMp M 11/19/9 7 ( < 0.01 ) 6.1 0 2540 N M N M N M N M N M P ( M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

N«M«*in l 6/9 8 O(Dry ) N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M • N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M —

————— — — — — — —— — ——— — - L11863-1 0 —— — M-SnUMMllM f 11/23/9 6

0.0 3 7.4 0 298 0

110 2 U 45 4 2.5 0. 1 J 20 5 0.0 1 U J 0.8 8 0.8 8 3. 7 7. 6 187 0 0.01 5 J 0.00 5 U J

0.0 1 U 0.70 6 0.0 3 J 0.1 6 0.28 1 5.5 8 15 7
0.0 1 U 0.70 4 0.0 2 J 0.9 4 0.6 3 4.4 6 13 4

11 0 4. 2 2 J 198 0 2 U 293 0

——— — 2 0 L14220-0 1

M-SPR2MMI I 06/11/9 7 (0.002 ) 6.8 5 216 0
8 9 2 U 35 2 1. 8 J 0. 1 J 14 9 0.0 1 U 0.2 2 0.2 2 3. 7 7. 4 145 0 J 0.35 2 0.00 5 U J

0.00 2 J 0.40 1 0.0 2 U 0.0 3 J 0.2 7 6.1 2 74. 6
0.0 1 J 0.38 9 0.0 2 J 2. 6 1.1 1 5.6 9 67. 3
8 9 1. 1 2 J 149 0 2 U 211 0 5 2 SPR2 5 Non e

NttSanp M 11/19/9 7
0.1 5 6.2 8 1727 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M L19036-1

2 M-snuMl-Mc n 06/17/9 8 ( < 0.001 ) 6.4 4 166 2
10 6 2 U 29 1 2 J N M 14 3 N M N M 0.0 4 J 3. 8 7. 5 132 0 N M N M

0.00 2 U 0.26 8 0.0 2 U 0. 5 0.16 6 7.6 2 52. 8
0. 1 U 0.25 4 0.0 3 J 4. 4 3.9 5 7.1 4 47. 5
10 6 -1. 7 N M 132 0 2 U 210 0 1 0 J

J:\5344\98SAMP\MFGSW.WB 2 Pag e 4 o f 1 5 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7 - APACH E TAILING S SAMPL E LOCATIO N SOURC E SAMPL E NUMBE R SAMPL E DAT E Flo w (cfs) p H (units ) Conductivit y @25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, ortho dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Metals

, Tota l Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation-Anio n Balanc e (%) Dissolve d Organi c Carbo n (mg/L ) Hardnes s a s CaC0 3 (mg/L ) Hydroxid e a s CaCO 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

, Non-Filterabl e (TSS ) (me/L ) L11863-0 6 M-SPU44I-1II3 M 11/23/9 6
0.1 1 7.5 5

. 173 1
16 0 2 U 24 2 J 1. 7 J 0.2 J 10 2 0.0 1 U J 0.2 3 0.2 3 2. 4 7. 4 89 0 0.00 5 U J 0.00 5 U J

0.00 2 U 0.11 5 0.0 1 U 0.0 1 U 0.011 1 0.08 3 J 25. 4
0.00 2 U 0.11 4 0.0 1 U 0.0 1 J 0.014 7 0.08 8 22.9
16 0 0. 7 U 1 U 102 0 2 U 145 0 2 0 SPR2 4

___________

Sprin g
___ ____ ________________ L14220-0 2 M-sruni-tim 06/11/9 7
0.0 5 6.5 4 142 0
13 0 2 U 21 3 1. 1 J 0. 3 J 80. 2 0.0 1 U 0.3 5 0.3 5 2. 5 6 72 0 J 0.01 2 J 0.00 5 U J

0.00 2 U 0.056 4 0.0 1 U 0.0 1 U 0.010 9 0.0 2 J 11. 6
0.00 5 U 0.05 3 0.0 1 U 0.0 8 J 0.02 2 0.0 2 J 10. 9
13 0 0. 3 1 U 86 2 2 U 121 0 5 U Non e

N w Sunp W 11/19/9 7 (0.01 ) 6.3 0 194 0 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

N o l S.mp M 06/17/9 8

0.02 9 6.7 7 166 8 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M SPR24 B

LI1863-0 9 M-SPR14B4I.I1U N 11/23/9 6

0.0 3 7.97 137 4
4 9 2 U 22 3 J 1. 1 J 0. 3 J C Q 0 jy. o 0.0 1 U J 0.21 0.2 1 2 4. 6 69 0 0.00 5 U J 0.00 5 U J

0.0 1 U 0.04 9 0.0 1 J 0.0 2 J 0.01 3 0.50 5 10. 6
0.00 2 U 0.04 7 0.0 1 J 0.0 5 0.017 0.42 7 9.1 3
4 9 3.5 1 U 80 3 2 U 111 0 L14220-0

3 M-SPR3<M14I1» 7

0.0 2 7.0 6 108 2

2 U 16 9 0. 8 J 0. 4 J 51. 5 0.0 1 U 0.3 6 0.3 6 2.3 4 55 0 0.011 J 0.00 5 U J

0.00 2 U 0.032 6 0.0 1 J 0.0 1 U 0.016 3 0.4 6 6. 2
0.00 5 U 0.0 3 0.0 1 J 0.0 3 J 0.0 2 0.42 6 5.6 3
6 0 1. 2 1 U 63 4 2 U 85 0 Non e

NotSmii M

0.0 1 6.3 2 202 5 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M KllLj l N M N M N M N M N M N M N M L19036-1 1

M-SPRMM1-X4I 7

0.0 2 6.9 3 1218

5 2 2 U 22 2 1 U N M 48. 1 N M N M 0.2 1 2. 8 4. 3 73 0 N M N M

0.00 2 U 0.030 1 0.0 1 U 0.0 1 U 0.015 2 0.25 5 f n o J.U o 0.00 5 U 0.029 2 0.0 2 J 0.2 5 0.05 1 0.27 9 5.1 4
5 2 • 5 Q -Zt D
75 3 2 U 111 0 cf s - cubi c fee t pe r second

. N M « No t measured

. (0.002 )

- Value s I n parenthese s indicat e an estimate d value

. U

- No t detecte d «the Indkaie d metho d detectio n limit (MDL)

. J

- Estimated

. J

- - Estimated

, biase d low

. U J

- Undetecte d a t estimate d MDL

.
J:V5344\98SAMP\MFGSW.WB 2 Pag e 5 o f 1 5 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7 - APACH E TAILING S

_________ SOURC E 

### L A B NUMBE R 

## SAMPL E NUMBE R

•

_____ SAMPL E DAT E

_____ _ Fiel d Parameter s " " —————— Flo w (cfs ) Conductivit y @25 C (umhos/cm ) Majo r Constituent s an d Inorganic s 

### Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) 

### Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) 

### Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (mg/L ) Metals

, Dissolve d 

### Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) 

### Iro n (mg/L ) Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Metals

, Tota l Arseni c (mg/L ) Cadmiu m (mg/L ) I Coppe r (mg/L ) 1 Iro n (mg/L ) 1 Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) 

### Othe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation

- A nio n Balanc e (% ) Dissolve d Organi c Carbon (mg/L ) Hardnes s as CaC0 3 (mg/L ) 

### Hydroxid e as CaC0 3 (mg/L ) Residue

. Filterabl e (TDS ) (mg/L ) 1 L11845-0 6

M-n>i-*|.iitt M 11/22/9 6
1.6 5 7.5 2 20 0 

# 1 8 9 2 U 24. 7 0.9 J 0. 1 J 11. 6 0.0 1 U J 0.1 3 0.1 3 0. 7 J 1. 3 14. 9 0.00 5 J 0.00 6 J

0.00 5 U 0.00 2 J 0.0 1 U 0.0 1 U 0.00 1 U 0.00 5 U 0.0 2 J

0.00 5 U 0.00 1 U 0.0 1 U 0.0 1 J 0.00 1 U 0.00 5 U 0.0 5

8 9 2. 9 1 J 10 9 2 U 11 0 P D 1 —

— Parltvill e Discharge L14220-0 7 M-FDMMII H 

### 06/11/9 7
1.1 1 7.0 3 18 4

6 8 2 U 22. 2 1. 1 J 0. 1 U 10. 5 0.0 1 U 0. 1 0. 1 0. 8 J 1. 1 23. 6 J 0.01 1 J 0.00 6 J

0.00 2 U 0.000 5 J 0.0 1 U 0.0 1 U 0.000 4 U 0.00 5 U 0.0 9
0.00 5 U 0.00 1 J 0.0 1 U 0.0 5 U 0.00 1 J 0.00 5 U 0. 1

6 8 3. 8 1 J 9 9 2 U 10 0 1 Non e 1 N M Simp M 11/19/9 7
0.7 1 7.0 0 20 7 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M M M N M N M N M N M 

### Non e

NMSmf M 06/17/9 8

0.5 2 7.7 5 215 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M L11863-0 1

M-STRIMI-II U 11/23/9 6
0.1 9 7.9 9 86 4
16 3 2 U 10 6 4. 5 0. 1 U 49. 6 0.0 1 U J 0.4 6 0.4 6 1. 4
26 3 0.00 7 J 0.02 2 J

0.00 2 U 0.000 4 U 0.0 1 J 0.0 1 U 0.000 4 U 0.00 5 U 0.0 5
0.00 2 U 0.000 4 U 0.0 1 U 0.0 1 U 0.000 5 J 0.000 5 J 0.0 9
16 3 3. 7 1 J 46 9 2 U 62 0 L14220-0 6



### -snu M 06/1 1
0.0 6 7.8 6 78 9
14 9 2 U 10 4 3. 1 0. 1 U 47. 6 0.0 1 U 0.5 7 0.5 7 1. 4 4. 6 28 0 J 0.01 3 J 0.00 5 U J

0.00 2 U 0.000 4 U 0.0 1 U 0.0 1 U 0.000 4 U 0.00 5 U 0.0 6
0.00 5 U 0.00 1 J 0.0 1 U 0.0 5 U 0.00 1 J 0.00 5 U 0.0 9
14 9 1. 9 1 J 45 6 2 U 58 0 5 ef t » cubi c fee t pe r second

. N M

- No t measured

. (0.002 )

- Value s h i paremhese s indicat e a n estimate d value

. U

- Not detecte d «the indicate d metho d detectio n limi t (MDL)

. ; - Estimated

. J

- - Estimated

, biase d low

. UJ-Undetecte d a t estimate d MDL

. JPR2 3 iprin c Non e NMSop M 11/19/9 7

0.2 0 6.6 0 85 8 N M N M N M N M N M N M

. N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M L19036-2

3 M-SnUMl-Mil T 06/17/9 *

0.007 3 7.5 3 104 2

14 2 2 U 12 0 4 J N M 56. 4 N M N M 0.5 7 1. 2 5. 1 38 0 N M N M

0.00 2 U 0.00 2 U 0.0 1 U 0.0 1 U 0.00 2 U 0.01 5 J 0.0 3 J

0.00 5 U 0.00 1 U 0.0 1 U 0.0 9 0.00 6 0.03 5 0.0 8
14 2 -0. 5 N M 53 2 2 U 74 0 6 J

J:\3344\Q8SAMP\MFGS\V.WB 2 Pag e 6 o f 1 5 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7

. APACH

E TAILING

S .SAMPL E LOCATIO N SOURC E L A B NUMBE R SAMPL E NUMBE R SAMPL E DAT E Fiel d Parameter s Flo w (cfs ) p H (units ) Conductivit y @25 C (umhos/cm ) Majo r Conslituenis an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (mg/L ) Metals

, Dissolve d 

### Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Metals

, Tota l Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation

- A nio n Balanc e (% ) Dissolve d Organi c Carbon (mg/L ) Hardnes s a s CaC0 3 (mg/L ) Hydroxid e a s CaCO 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e (TSS ) (mg/L ) • L11845-0 7

M-SFRI14MIII M 11/22/9 6 N M 6.9 6 33 6

9 7 2 0 42.9 1. 5 J O. I U 15. 6 0.0 1 U J 0. 5 0. 5 1. 7 2. 1 6 1 0.00 9 J 0.00 5 U J

0.00 5 U 0.00 2 J 0.0 1 U 0.0 1 U 0.00 1 U 0.00 6 J 0.0 3 J

0.00 5 U 0.00 1 U 0.0 1 U 0.0 9 0.00 3 J 0.02 3 J 0.1 3
9 7 3. 8 1 U 17 1 2 U 20 0 1 2 J SPR2 2

_________

Sprto e
_ _ L14220-0 8 M-snuM\4im 06/11/9 7 N M 6.6 6 54 7

9 1 2 U 72. 4 2. 9 0. 1 U 27.2 0.0 1 U 0.9 5 0.9 5 4. 4 3. 9 18 1 J 0.01 5 J 0.00 5 U J

0.00 2 U 0.00 2 0.0 1 U 0.0 1 J 0.000 6 J 0.19 1 1.9 3
0.00 5 U 0.00 4 J 0.0 1 U 0.1 5 0.00 5 0.23 2 1.8 5
9 1 3. 7 2 J 29 3 2 U 38 0 1 4 J Non e

NwM<»Henr f 11/9 7 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

NotSimp M 06/17/9 8

« 0.001 ) 7.2 2 34 0 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M CP 1 L1I863-0 7 M-CR4M113M 11/23/9 6 N M 8.3 1 35 0 O A ? D 2 U 40. 2 1. 8 J 0. 1 U 16. 7 0.0 1 U J 0.3 6 0.3 6 3. 5 2. 3 6 4 0.00 9 J 0.00 5 U J

0.00 1 U 0.000 3 J 0.0 1 J 0.0 1 U 0.000 2 U 0.00 9 J 0.0 7
0.00 2 U 0.000 4 U 0.0 1 U 0.17 0.00 2 0.02 6 J 0.1 3
9 6 3. 4 1 J 16 9 2 U 23 0 5 U L14220-0

4 M-cpi-*i.<ii» 7 06/11/9 7 N M 7.5 5 43 9
7 7 2 U 56. 3 1. 8 J 0. 1 U

o n A 20. 4 0.0 1 U 0.0 9 J 0.0 9 J 4. 4 2. 7 14f ) I** U 0.02 6 0.00 5 U J

0.00 2 U 0.000 4 U 0.0 1 U 0. 1 0.000 7 J 0.09 6 0.0 5
0.00 5 U 0.00 1 J 0.0 1 U 3.3 7 0.02 7 0.1 4 0.2 2
7 7 2. 1 1 J 22 5 2 U 29 0 8 J Non e

N o t MmHora d N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

6/9 8 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M ef t - cubi c fee t pe r second

. N M * No t measured

. (0.002 ) » Values I n parenthese s Indicat e an estimate d value

. U

- Not detecte d at the indicate d metho d detectio n limi t (MDL)

. )

- Estimated

. I

- - Estimated

, biase d low

. U J • Undetecte d a t estimate d MDL

.
.5344\98SAMP\MFGSW.WB 2 Pag e 7 o f I S 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7 - APACH E TAILING S

ef t - cubi c fee t pe r second

. N M

- No t measured

. (0.002 )

- Values i n parenthese s Indicat e i n estimate d value

. U

- N M detecte d at the Indicate d metho d detectio n Ibnf t (MDL)

. J * Estimated

. J

- - Estimated

, bbse d low

. U J

- Undetecte d a t estimate d MOL

. SAMPL E LOCATIO N SOURC E L A B NUMBE R SAMPL E NUMBE R SAMPL E DAT E Fiel d Parameter s Row (cfs ) p H (units ) Conductivit y @25 C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesium (mg/L ) Nitrit e a s N (mg/L ) Nitrat e as N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d .(mg/L ) Phosphorus

, orth o dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) 

### Lead (mg/L ) Manganese (mg/L ) Zin c (mg/L ) Metals

, Tota l Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) 

### Iron (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Other Wate r Qualit y Parameter s Tota l Alkalinit y a s CaCO 3 (mg/L ) Cation-Anion Balanc e (% ) Dissolve d Organi c Carbon (mg/L ) Hardnes s as CaC0 3 (mg/L ) Hydroxid e a s CaC03 (mg/L ) Residue

. Filterabl e (TDS ) (mg/L ) L

I 1845-2 5 M-ATOMI-tlll M 11/21/9 6

1.7 7 6.9 0 55 0
9 8 2 U 67.8 1. 4 J 0. 1 U 28. 8 0.0 1 U J 0.1 7 0.1 7 1. 1 2. 5 17 0 0.02 1 J 0.00 7 J

0.00 5 U 0.03 1 0.0 1 U 0.0 1 U 0.00 5 J 0.19 9 5.0 7

0.00 5 U 0.02 9 0.0 1 U 0.1 7 0.01 7 0.21 3 5. 4

9 8 4. 1 1 U 28 8 2 U 36 0 APU

1 Combine d Surfac e Flow s L14201-0 6 M-Artn4l4l(T T 06/10/9 7
i i s I.J O 6.9 5 35 3

7 9 2 U 45. 6 1. 4 J 0. 1 U 19. 2 0.0 1 U 0.0 3 J 0.0 3 J 0.9 J 1. 7 10 1 0.02 7 0.00 5 U J

0.00 5 U 0.01 4 0.0 1 J 0.0 6 0.00 3 J 0.21 7 2.1 4
0.00 5 U 0.01 3 0.0 1 U 0.2 5 0.0 2 0.20 4 2.0 8
7 9 3. 8 1 J 19 3 2 U 27 0 5 U H

6511-0 8 M-Ann-«i-iii»» 7 11/19/9 7

1.4 5 6.2 3 49 3
9 8 2 U 6 9 1 M M PiIV l 23. 2 N M M M ru n O. I 2 U 1. 9 1£f t 16 Q N M N M

0.00 1 U 0.01 3 0.0 1 U 0.0 1 U 0.00 3 0.12 8 2.5 7
0.00 1 U 0.01 4 0.0 1 U

n u U

. J H 0.01 7 0.12 3 2. 4
9 8 1. 9 N M 26 8 2 U 30 0 6 L19036-2

4 M.APUHI.JW1 7 06/17/9 8
f t JC O 0.6 8 6.7 3 46 4

7 5 2 U 42. 4 1 J N M 16. 5 N M N M 0.0 4 J 0. 8 J 1. 5 

## n o N M N M

0.00 2 U 0.005 6 0.0 1 U 0.0 1 U 0.002 2 0.04 9 0.8 9
0.00 5 U 0.00 5 0.0 1 U 0.1 5 0.02 7 0.0 5
n n o u.o y
7 5 -4. 1 N M 17 4 2 U M f l iRM 6! L11845-2

3 M-APDI-el-Illl K 11/21/9 6
2.0 9 7.5 0 56 0
9 7 2 U 69. 2 1. 7 J 0. 1 U 26. 5 0.0 1 U J 0.1 5 0.1 5 0. 9 J 2. 6 17 5 0.017 J 0.00 5 U J

0.00 1 U 0.002 9 0.0 1 J 0.0 1 U 0.004 8 0.2 1 5.0 3

0.00 2 U 0.029 5 0.0 1 U 0.3 1 0.032 1 0.23 2 5. 4
9 7 2. 3 1 U 28 2 2 V 37 0 6 J _____W

o L14201-0 3 M-AFDMI4IW 7 06/10/9 7

1.2 5 6.6 4 32 1
7 9 2 U 43. 6 1. 4 J 0. 1 U 18. 7 0.0 1 U 0.2 4 0.2 4 0. 9 J 1. 7 9 4 0.01 4 J 0.00 5 U J

0.00 5 U 0.01 2 0.0 1 J 0.0 3 J 0.00 3 J 0.14 1 1.7 2
0.00 5 U 0.01 1 0.0 1 J 0.1 5 0.01 1 0.13 2 1.6 4
7 9 3. 6 2 J 18 6 2 U 27 0 1 0 J A o d B PD 1

o x Culver t Non e 11/9 7 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

. N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

NMMoilWi W 6/9 8 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

J:\5344\98SAMP\MFCSW.WB 2 Page s o f 1 5 09/23W 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6191, 11/97, AN D 6/98 ) O U 7 - APACH E TAILING S SAMPL E LOCATIO N

_________ SOURC E L A B NUMBE R SAMPL E NUMBE R

________ SAMPL E DAT E Fiel d Parameter s Flo w (cfs ) p H (units ) Conductivit y @25 C (umhos/cm ) Majo r Constituent s an d Inorganic s i Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) 

### Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) 

### Sodiu m (mg/L ) Sulfate (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, onh o dissolve d (mg/L ) Metals

, Dissolve d 

### Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L)

. Iro n (mg/L ) 

### Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Metals

, Tota l 

### Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) 

### Iro n (mg/L ) 

### Lea d (mg/L ) Manganes e (mg/L ) 

### Zin c (mg/L ) Othe r Wate r Qualit y Parameters 

### Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation-Anio n Balanc e (% ) 

### Dissolve d Organi c Carbon (mg/L ) Hardnes s a s CaC0 3 (mg/L ) Hydroxid e as CaC0 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e (TSS ) (me/ U • L I 1845-1 3 M-CGAM4MII1 M 11/21/9 6
3.8 9 7.3 0 81 9
5 2 2 U 12 7 1. 4 J 0. 3 J 38. 5 0.0 1 U J 0.2 2 0.2 2 1. 3 3.2 40 5 0.0 1 J 

### 0.00 5 U J

0.00 5 U 0.01 9 0.0 1 U 0.0 7 0.00 2 J 0.42 5 3.6 6
0.00 5 U 0.017 0.0 1 U 0.3 8 0.03 2 0.41 1 3.5 4

5 2 1. 1 1 J 47 6 2 U 66 0 2 2 Califor r

L14201-04 M-AFDN24MIW 7 06/10/9 7
7.4 2 3.4 5 57 1
2 U 2 U 62. 4 0. 7 J 0. 3 J 21. 4 0.0 1 U 0.3 2 0.3 2 1. 5 2.5 290 J 

### 0.02 9 0.00 5 U J

0.00 5 U 0.07 1 0. 5 2.4 2 0.28 3 3.2 7 15. 2
0.00 5 U 0.0 7 0.4 4 6.3 9 

### 0.40 5 2.9 7 13. 8
2 U -2. 3 2 J 24 4 2 U 55 0 2 8 i a Gulc h L16511-0 6 M-AFDN24MI1M T 11/19/9 7
3.5 5.5 4 141 0
5 4 2 U 37 2 2 N M 30. 8 N M N M 0.1 9 3 J 3.3 91 0 N M N M

0.00 1 U 0.00 9 0.0 1 U 0.1 2 0.00 1 0.48 4 2.4 8
0.00 2 0.01 1 0.0 1 1.0 8 0.0 5 0.45 8 2.3 9

5 4 2. 9 N M 106 0 2 U 140 0 1 6 J L19036-1 4

M-APDN2^|.»M U 06/16/9 8
3.1 6 6.7 4 140 8
2 6 2 U 19 0 1 U N M 32. 6 N M N M 0.1 6 2. 4 3 D

. 6 54 0 N M N M

0.00 2 U 0.010 1 0.0 1 J 0.0 8 0.00 6 

### 0.50 9 2.0 7
0.00 5 U 0.0 1 0.0 1 U 0.3 1 0.034 6 0.49 1 2.0 8
2 6 2. 5 N M 60 9 2 U 84 0 5 U 

## I T

— "~

~ ~ ~' —— —'———— — — SPR 9 L11863-1 1 M-SFRMI.I123 M 11/23/9 6 N M 5.6 3 261 0
5 J 2 U

. 27 4 2. 9 0.2 J 20 6 0.0 1 J 0. 3 0.3 1 5. 1 8.4 163 0 0.04 5 J 0.01 2 1
0.0 1 U 0.03 4 0.0 4 J 4 3 0.02 7 55. 4 71. 5
0.00 5 U 0.03 2 0.0 2 J 43. 2 0.07 4 5 4 69. 8
5 J 7 2 J 153 0 2 U 

### 254 0 1 8 J Non e

N o t Smip M

———— — ———————— — 0 (Dry ) N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e

NMSunp M 11/19/9 7 

### O(Dry ) N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M L19036-1 8

M.S1TO-OI-9M K 

### 06/16/9 8 ( < 0.001 ) 3.1 5 

### 546 0
2 U 2 U 37 8 4 J N M 61 0 N M N M 0.0 2 U 10. 7 12. 5 406 0 N M N M

0.0 1 J 0.10 6 1. 1 20 9 0.10 3 26 2 >)O < £QJ 

### 6.0 1 U 0.04 4 0.3 7 q e o JJ. O 0.15 7 17 9 25 2
2 U 12. 1 N M 

### 345 0 2 U 617 0 1 4 J ef t - cubi c fee t pe r second

. N M

- No t measured

. (0.002 ) » Value s h i parenthese s rndtot c a n estimate d value

. U

- No t detecte d n th e Indicate d method detectio n limi t (MDL). I

- Estimated

. 1

- - Enlnated

, biase d low

, U J • Undetecte d a t estimate d MDL

.
.5344V98SAMPVMFGSW.WB 2 hi e 9 o f 1 5 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U T

- APACH E TAILING S SAMPL E LOCATIO N SOURC E L A B NUMBER SAMPL E NUMBE R SAMPL E DAT E Fiel d Parameters Flo w (cfs ) p H (units ) 

### Conductivit y @25 C (umhos/cm ) Majo r Constituent s an d Inorganics Bicarbonat e (mg/L ) Carbonat e (mg/L ) 

### Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) 

### Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) 

### Phosphorus

, dissolve d (mg/L ) Phosphorus

, orlh o dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lead (mg/L ) 

### Manganes e (mg/L ) Zin c (mg/L ) Metals

, Tota l 

### Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) 

### Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation-Anio n Balanc e (% ) Dissolve d Organi c Carbon (mg/L ) 

### Hardnes s a s CaC0 3 (mg/L ) Hydroxid e as CaC0 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e (TSS ) (me/L ) L I 1863-1 3 M-SFU14MI13 M 11/23/9 6 N M 6.2 4 235 0
1 5 2 U 19 4 2. 5 0. 1 U 162. 0 0.0 4 J 0.0 2 U 0.0 3 J 7. 1 8. 5 1520 0.01 5 J 0.00 6 )

0.0 1 U 0.03 5 0.0 2 U 105. 0 0.05 7 77. 9 70. 2
0.00 5 U 0.03 2 0.0 2 U 102. 0 0.11 0 75. 3 67.9

1 5 6. 8 2 J 115 0 2 U 217 0 5 6 SPR2 1

Sprin e L14220-1 1 

### M-snui4Mi m 06/11/9 7 (0.001 ) 5.5 3 268 0
2 U 2 U 26 6 2. 1 J 0. 1 J 22 1 0.0 1 U 0.2 U 0. 2 U 8 10.5 193 0 0.02 1 J 

### 0.00 6 J

0.00 2 U 0.069 9 0.0 8 J 13 0 0.28 2 10 6 89. 2
0.0 2 J 0.07 6 0.1 3 13 0 1.0 9 10 4 87. 3
2 U 9. 9 2 J 157 0 2 U 3100 30 4 Non e

NxSmp M 11/19/9 7 0(Dry ) N M N M N M N M N M JlIV I N M N M N M N M I N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

— — — N M L19036-1 7

M-SPMI414M U 06/16/9 8

« 0.001 ) 6.0 9 188 0

1 0 2 U 16 7 2 J N M 11 4 N M N M 0.06 ) 5. 1 6 102 0 N M N M

0.00 5 U 0.047 2 0.0 5 33. 1 0.1 2 39. 6 41. 4

0.00 5 U 0.047 2 0.0 5 33. 1 0.20 4 38. 6 

### 4 n • ; t\/tj

1 0 5 N M 88 6 2 U 163 0 

### Non e

KMSMip M 11/11/9 6 0<Dry ) N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M INIW N M P I M N M N M N M N M N M N M L14220-15

M-SPIU7^Mtl » 06/11/9 7

0.00 4 4.7 4 411 0
2 U 2 U 27 0 7. 7 0. 1 U 26 5 0.0 1 ) 0. 4 J 0. 4 ) 8 J 1 5 450 0 J 0.02 8 0.01 4 J

0.00 3 J 0.51 6 0.1 6 J 64 8 0.58 4 27 4 16 2
0.0 2 J 0.5 1 0.2 1 60 8 0.75 6 27 1 16 5
2 U 0. 4 2 J 176 0 2 U 559 0 SPR2 7 Sprin e Non e NMSmpk d 11/9 7

« 0.001 ) 4.6 2 654 0 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M L19036-1

3 M-snU7-ti.f«i « 06/16/9 8 ( < 0.001 ) 4.2 5 9140
2 U 2 U 38 1 4 J N M 123 0 N M N M 1.3 8 66. 6 27. 5 7190 N M N M

0.0 2 U 0.17 4 0.0 4 J 26 1 0.02 4 85. 2 11 5
0.0 4 J 0.16 3 0.0 5 U 32 9 0.18 9 80. 5 11 2
2 U -1. 7 N M 6010 2 U 

### 997 0 37 4 ef t « cubi c fee t pe r second

. N M • No t measured

. (0.002 )

- Values h i parenthese s Indicat e a n estimate d value

. U

- Not detecte d a t the Indicate d metho d detectio n limit (MDL)

. • J

- Estimated

. I

- - Estimated

, biase d tow

. U J

- Undetecte d a t estimate d MOL

. J:\5344\98SAMP\MFGSW.WB 2 PjftlOofl S 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7 - APACH E TAILING S SAMPL E LOCATIO N SOURC E 

## L A B NUMBE R SAMPL E NUMBE R _^_ ^ SAMPL

E DAT E Fiel d Parameters Flo w (cfs ) p H (units ) Conductivit y @25 C (umhos/cm ) Majo r Constituent- ! an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lead (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Uetals

, Tota l Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) 3the r Wate r Qualit y Parameter s Tou t Alkalinit y a s CaCO 3 (mg/L ) Cation-Anio n Balanc e (% ) Dissolve d Organi c Carbon (mg/L ) Hardnes s as CaC0 3 (mg/L ) Hydroxid e a s CaC0 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

, Non-Filterabl e (TSS ) (me/L )' Non e

NMSimplr f 11/11/9 6 0 (Dry ) N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M SPR1 9

Sorln e L14220-1 2 M-SPRIMMI W 06/11/9 7 (0.0015 ) 3.2 7 382 0
2 U 2 U
4j U JVf* 3.3 O. I U 31 0 0.01 U 0.2 U 0.2 U 7 12. 7 474 0 J 0.02 9 0.01 2 J

0.00 2 1 0.1 5 0.2 5 35 2 0.64 9 17 3 12 3
0.0 1 U 0.16 3 0.2 9 30 9 0.70 5 16 6 12 1
2 U -11. 3 2 J 218 0 2 U 476 0 4 0 Non e

N M Smipl. J 11/19/9 7 0(Dry ) N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M H

9036-1 6 M-SFRIMl-Nt M 06/16/9 8 ( < 0.001 ) 3.6 6 144 3
2 U 2 U
| jf n lO O

1 J N M 44. 7 N M N M 0.0 2 U 2. 1 6. 8 66 0 N M N M

0.0 2 U 0.031 4 0.1 6 4.1 9 1. 3 9.6 1 8.3 2
0.0 2 U 0.0318 0.1 4 4.1 8 1.1 7 9.7 5 8.7 3

2 U -2. 6 N M 58 4 2 U 99 0 •• ^

—— — L I 1845-1 2 M-CGM-IM1I1 M 11/21/9 6
2.2 7 7.2 8 82 6
5 0 2 U 13 1 1. 4 J 0. 3 J 40.3 0.0 1 U I 0.1 9 0.1 9 1. 6 3 . 3 • 42 4 0.01 3 ) 0.00 5 U J

0.00 5 U 0.01 9 0.0 1 U 0.6 1 0.00 1 U 0.97 5 4.2 3
0.00 5 U 0.01 8 0.0 1 U 1 0.02 7 0.93 1 4.1 1
5 0 1. 5 1 J 49 3 2 U 64 0 —

— •—

— — — , C <

_________ Callfor r L14201-0 1 M-CCtMUlt n 06/10/9 7
6.9 1 4.1 6 77 1
2 U 2 U 127 0. 8 J 0. 4 J 24. 6 0.0 1 U 0.1 5 0.1 5 1. 8 2. 8 48 0 0.016 J 0.00 5 U J

0.00 5 U 0.05 4 0.3 3 0. 9 0.15 9 2.5 8 10. 7
0.00 5 U 0.05 1 0.3 2 4.5 0.27 5 2.4 5 10. 2
2 U -5. 3 1 1 41 9 2 U 74 0 10 3 i a Gulc h L16511-O S M-CCU4MI1W 7 11/19/9 7
3.5 2 5.3 3 151 0
5 1 2 U 38 9 2 N M 31. 5 N M N M 0.1 9 2 3. 6 95 0 N M N M

0.00 1 U 0.00 6 0.0 1 U 0.1 9 0.00 1 0.59 4 2.5 5
0.00 3 0.01 4 0.0 1 1.3 3 0.08 5 0.59 3 2.5 9
5 1 3.2 N M 110 0 2 U 144 0 L19036-0

8 M-CG0341-MC1 5 06/15/9 8
2.9 7 6.4 8 107 5
2 7 2 U 16 2 I U N M 30. 6 N M N M 0.1 5 2. 1 3. 3 54 0 N M N M

0.00 2 U 0.010 6 0.0 1 U 0.1 8 0.007 4 0.64 3 2.2 2
0.00 5 U 0.010 3 0.0 1 U 0.2 1 0.006 4 0.67 8 2.2 6
2 7 -4. 4 M M rim 53 1 2 U 79 0 ef t - cubi c fee t pe r second

. N M

- No t measured

. (0.002 )

- VihM S I n parenthese s Indicat e an estimate d value

. U

- No t detecte d «th e Indicate d metho d detectio n Ifm h (MDL)

. J-Estimated

. I

- - Estimated

, biase d tow

. U J « Undetecte d a t estimate d MDL

. 5344\98SAMP\MFGSW.WB 2 Page 1 1 o f I S 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7 - APACH E TAILING S

ef t " cubi c fee t pe r second

. N M • No t ntejsured

. (0.002 ) » Vihie s I n piremhese s Indicat e t n entmnc d nhie

. U

- Not detecte d »the hxtatt d metho d detectio n Ibn k (MDL)

. J » Estimated

. ) •
- Esilimted

, bbtt d low

. U J » Undetecte d a t estimate d MDL

. SAMPI.F.IOCATIO N

— — _________

SOURC E L A B NUMBE R SAMPI.F

. NUMBE R SAMP1. R DAT E Fiel d Parameters ~ —————————

— Flo w (cfs ) p H (units ) Conductivit y @2S C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Niirit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (me/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L)

. Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Metals

, Tota l Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) 

### Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaCO 3 (mg/L ) Cation-Anio n Balance (* ) Dissolve d Organi c Carbo n (mg/L ) Hardnes s a s CaC0 3 (mg/L ) Hydroxid e a s CaC0 3 (mg/L ) Residue

. Filierabl e (TDS ) (mg/U ) Residue

. Non-Fllterabl e (TSS ) (ms/ U Non e

11/9 6 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Star r

Ditc h L14220-1 4 M-soMi-n m 06/11/9 7
1.2 7 3.1 4 63 8
2 U 2 U 32. 4 0. 5 U 0. 2 / i n ^ 0.0 1 U 0.2 U 0. 2 U 1. 5 2. 1 *)«£/ ! 0.03 2 0.00 5 U J

0.00 2 U 0.14 5 0.3 8 12. 9 0.10 8 7.5 9 23. 4' 0.00 4 J 0.14 2 0.3 9 15. 7 0.16 2 7.5 1 22. 1

2 U -0. 4 2 J 16 6 2 U 45 0 2 4 Non e

NxSMif M 11/9 7 

### O(Dry ) I N M N M N M N M N M N M N M N M N M N M N M N T M N M N M N M N M N M N M N M N M N M

nm N M N M N M N M N M N M N M N M N M N M N M N M N M N M L19036-0

4 M-SDM14K1 S 06/15/9 8
0.16 3 3.3 8 100 6
2 U 2 U 63. 3 3 J N M 43. 4 N M N M 0.1 9 2 2. 7 51 0 N M N M

0.00 2 U 0.32 8 0.6 5 8.5 3 0.30 7 1 5 51. 5
0.00 3 J 0.30 8 0.6 1 10. 7 0.32 9 14. 5 48. 8
2 U -3.3 N M 33 7 I 2 U 1 79 0 I 1 4 J 1 —

— Non e NMMMfon d

_ __ _ n/y o
_ _ N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M' N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M 

## N M N M SD1 A

Star r Ditc h Non e NotSMip M 06/11/9 7
1.2 3 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M M M M M M M M M M M Non e

Nft l Mwritorar f 11/9 7 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M Non e N M *TinnJii t ra n aimpi M 6/9 8
0.12 5 3.4 9 92 9 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

. N M N M

J:\5344\98SAMP\MFGSW.WB 2 Pag e 1 2 o f 1 5 09/23/9 8

### Tabl e 2 SURFAC E WATER QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7

. APACH

E TAILING

S

ef t - cubi c fee t pe r second

. M M » No t measured

. (0.002 )

- Value s I n parentheses Indlot e i n esiiiraio ) value

. 0 - Not detecte d at the indicate d metho d detectio n Ibn h (MDL)

. J

- Estimated

. I

- - Estimated

, biase d low

. U J • Undetecte d a t estimate d MDL

. SAMPL E LOCATIO N SOURC E L A B NUMBE R SAMPL E NUMBE R

_ SAMPL

E DAT E

______ Flo w (cfs ) Conductivit y @25 C (umhos/cm ) Majo r Constituent s an d Inorganics Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e a s N (mg/L )
Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (mg/L ) Hetals

, Dissolve d Arseni c (mg/L ) 

### Cadmium (mg/L ) Coppe r (mg/L ) Iron (mg/L ) Lea d (mg/L ) Zin c (mg/L ) Arseni c (mg/L ) Cadmium (mg/L ) Coppe r (mg/L ) Iron (mg/L ) 

### Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Tota l Alkalinit y a s CaC03 (mg/L ) Cation

- A nio n Balance (% ) Dissolve d Organi c Carbon (mg/L ) Hardnes s a s CaC0 3 (mg/L )

. Hydroxid e a s CaC03 (mg/L ) Residue

, Filterabl e (IDS ) (mg/L ) Non e

NolSimp M 11/9 6

0 (Dry ) N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M SUr r

Ditc h L14220-1 3 M-SDI-M-fll* ? 06/11/9 7
1.5 2 3.3 5 65 6
2 U 2 U 33. 5 0. 5 U 0. 2 J 21. 9 0.0 1 U 0. 2 U 0.2 U 1. 5 2. 1
0.03 2 0.00 5 U J

0.00 2 J 0.15 6 0.4 1 1 5 0.13 9 8.2 3 25. 5
0.00 6 J 0.15 9 0. 4 17. 9 0.2 4

23. 1
2 U 1. 1 2 J 17 4 2 U 49 0 Non e

NMSmp M 11/9 7 0(Dry ) N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M • N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M L19036-0

5 M-SDMMM1 J 06/15/9 8 I1/Z3/9 6 L11863-0 2 M-SFRT4MU3 M

0.08 6 0.0

5 3.6 4 88 6
2 U 2 U 62. 7 3 J N M 42. 2 N M N M 0.2 7 2. 1 2. 9 47 0 N M N M

0.00 2 U 0.31 8 0.5 9 7.8 4 0.37 3 14. 1 45. 8
0.0 2 U 0.30 5 0.5 7 9.4 6 0.44 2 14. 1 4 7
2 U -1. 5 N M 33 0 2 U 81 0 J

2 4 3.2

4 636 0
2 U 2 U 40 6 11. 6 0. 1 U 39 8 0.0 1 U J 0.0 3 J 0.0 3 J 5 1 3 714 0 0.052. 1 0.05 5 J

0.0 2 U 0.20 7 0.2 8 J 119 0 0.77 6 37 1 24 7
0.0 1 U 0.17 1 0. 1 U 111 0 0.71 8 32 3 23 0
2 U 0. 4 3 J 265 0 2 U 895 0 6 2 L14220-1 0

(0.01 ) 2.5 4 642 0
2 U 2 U 39 5 14. 3 0. 1 U 38 1 0.0 1 U 0.0 2 U 0.0 2 U 5 1 3 708 0 0.05 2 0.03 5 J

0.00 3 J 0.24 8 0.1 5 J 100 0 0.1 5 34 1 23 3
0.0 1 J

, 0.23 6 0.2 5 J 94 7 0.20 3 327 22 4
2 U -4. 3 2 J 255 0 2 U 853 0 5 SPR 7

~ rin g L16511-03 M.SFR74I-11IM7 11/19/9 7 (0.03 ) 1.7 6 401 0
2 U 2 V 32 8 1 2 N M 27 1 N M N M 0.0 2 U 6 1 3 355 0 N M N M

0.00 1 U 0.2 7 0.0 5 U 46 5 0.14 1 24 7 15 2
0.00 1 U 0.2 6 0.0 5 U 42 6 0.13 1 23 0 14 1

2 U 7. 3 N M 193 0 2 U 561 0 2 0 L19036-0 7

M-SF1l7-«l-Mfl 5 06/15/9 8

0.002 5 3.2 3 428 0
2 U 2 U 30 4 9 N M 25 1 N M N M 0.0 6 J 6. 3 13. 4 310 0 N M N M

0.00 5 U 0.19 2 0.0 9 32 5 0.28 6 23 8 14 7
0.0 2 J 0.18 7 0.1 4 35 0 0.48 6 23 2 14 3
2 U 7. 3 N M 179 0 2 U 518 0 J

1 2 J

• Th e locatio n o f sprint TP D b show n o n Figur e 1

.

344\98SAMPVMFGSW.WB 2 Fil e 1 3 o f 1 5 09/23/9 8

### Tabl e 2 SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7 - APACH E TAILING S SAMPL E LOCATIO N TPD * SOURC E SD

I n « L A B NUMBE R SAMPLE NUMBE R SAMPL E DAT E Hel d Parameters Flo w (cfs ) p H (units ) Conductivit y @2S C (umhos/cm ) Majo r Constituent s and Inorganic s Bicarbonat e (mg/L ) 

### Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesium (mg/L ) 

### Nitrit e a s N (mg/L ) Nitrat e as N (mg/L ) Nitrate/Nitrit e a s N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) 

### Phosphorus

, dissolve d (mg/L ) Phosphorus

, orth o dissolve d (mg/L ) Metals

, Dissolve d 

### Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iron (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zinc (mg/L ) Metals

, Tota l 

### Arseni c (mg/L ) Cadmium (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) 

### Lea d (mg/L ) Manganes e (mg/L ) 

### Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaCO 3 (mg/L ) 

### Cation-Anio n Balance (% ) Dissolved Organi c Carbo n (mg/L ) 

### Hardness a s CaC03 (mg/L ) Hydroxid e a s CaCO 3 (mg/L ) Residue

. Filterabl e (TDS ) (mg/L ) L16511-4

M M-TPMM11 W 11/19/9 7 (0.03 ) 3.4 8 307 0
2 U 2 U 26 6 g N M 24 6 N M N M 0.0 3 9 1 2 263 0 N M N M

0.00 1 0.1 8 0.0 5 U 26 9 0.127 15 8 10 8
0.00 1 0.1 9 0.0 5 U 27 2 0.17 7 16 0 10 9
2 U 6. 6 N M 168 0 2 U 412 0 

### Residu e Non-Filterabl e (TSS ) (mg/L )' 5 0 L19036-0 2 M.TFD4I-MCI 5 06/15/9 8

« 0.001 ) 3.3 7 446 0

2 U 2 U 30 4 9 N M 25 8 N M N M 0.0 5 J 8. 7 14. 1 324 0 N M N M

0.00 5 U 0.28 9 0. 1 35 4 0.15 2 22 9 14 2
0.00 2 U 0.25 4 0.0 8 J 37 2 0.1 3 22 2 13 4

2 U 6. 1 N M 182 0 2 U 495 0 J

- 5 U CGA01 U Californi a Gnlr h L I 1845-1 1 M-CCA«IU4|.111I K 11/21/9 6 3.3 2 7.3 3 95 4
1 8 2 U 13 7 1. 5 J 0. 3 J 45. 9 0.0 1 J 0.21 0.2 2 1. 5 3. 4 51 6 0.01 1 J 0.00 5 U J

0.00 5 U 0.0 2 0.0 1 U 16.9 0.00 1 U 6.1 7 7.7 4

0.00 5 U 0.0 2 0.0 1 U 17. 1 0.05 3 5.7 6 7.4 6

1 8 4. 7 1 J 53 1 2 U 76 0 3 6 L14201-0

9 M-CGA«IM1-«W 7 06/09/9 7
8. 5 4.2 2 75 3
2 U 2 U 11 3 0. 7 J 0. 3 J 24. 8 0.0 1 U 0. 1 O.I 1. 8 2. 6 400 1 0.02 7 0.00 5 U J

0.00 5 U 0.0 6 0.2 9 6.5 8 0.22 3 4. 4 12. 3
0.00 5 U 0.05 5 0.2 6 Q 7 0

. / 0.36 5 4.0 4 11. 4
2 U 2. 7 1 J 38 4 2 U 70 0 1 6 J 

### Non e

NofMMt a 11/9 7 N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M M M P« M N M N M N M Mkl N M N M ef t M cubi c fee t pe r second

. N M • No t measured

. (0.002 ) « Vrt M h i parenthese s indtat e i n esthmed vrtie

. U

- No t detecte d i t th e Mlcale d metho d detectio n llmk (MDL)

. J

- Estimated

. J

- - Estimated

, blue d low

. U J • Undetecte d a t estimate d MDL

. N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M N M

J:\5344\98SAMP\MFGSW.WB 2 Page U of l 5 09/23/9 *

### Table ! SURFAC E WATE R QUALIT Y DAT A (11/96

, 6/97,11/97

, AN D 6/98 ) O U 7 - APACH E TAILING S 

## SAMPL E i OCATION

__________

SOURC E L A B NUMBE R

———————— — SAMPL E NUMBE R

— — . ______ SAMPL E DAT E

_______ Fiel d Parameter s Flo w (cfs) p H (units ) Conductivit y @2S C (umhos/cm ) Majo r Constituent s an d Inorganic s Bicarbonat e (mg/L ) Carbonat e (mg/L ) Calciu m (mg/L ) Chlorid e (mg/L ) Fluorid e (mg/L ) Magnesiu m (mg/L ) Nitrit e a s N (mg/L ) Nitrat e a s N (mg/L ) Nitrate/Nitrit e as N (mg/L ) Potassiu m (mg/L ) Sodiu m (mg/L ) Sulfat e (mg/L ) Phosphorus

, dissolve d (mg/L ) Phosphorus

, orlh o dissolve d (mg/L ) Metals

, Dissolve d Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) 

### Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Metals

, Tota l Arseni c (mg/L ) Cadmiu m (mg/L ) Coppe r (mg/L ) Iro n (mg/L ) Lea d (mg/L ) Manganes e (mg/L ) Zin c (mg/L ) Othe r Wate r Qualit y Parameter s Tota l Alkalinit y a s CaC0 3 (mg/L ) Cation-Anio n Balanc e (% ) Dissolve d Organi c Carbo n (mg/L ) Hardnes s a s CaC0 3 (mg/L )

. Hydroxid e as CaC0 3 (mg/L ) Residue

, Filterabl e (TDS ) (mg/L ) Residue

. Non-Filterabl e (TSS ) (me/L ) L11845-1 0 M-CCA01L4MI21 M 11/21/9 6
3.3 2 7.0 2 86 2

3 4 2 U 12 9 1. 5 J 0.2 J 4 3 0.0 1 J 0.2 3 0.2 4 1. 6 3. 1 43 7 0.01 5 J 0.00 5 U J

0.00 5 U 0.02 4 0.0 1 U 12. 5 0.00 1 U 5.2 5 7.7 9
0.00 5 U 0.02 4 0.0 1 J 14. 4 0.10 5 5.0 7 7.8 9
3 4 7. 1 1 J 49 9 2 U 68 0 C

G Callfo n L1420I-1 1 M-CGABIHHW ? 06/09/9 7

« M 4.0 9 74 8
2 U 2 U 10 9 0. 7 J 0. 3 J 24. 3 0.0 1 U 0.1 1 0.1 1 1. 9 2. 8 39 0 0.02 1 J 0.00 5 U J

0.00 5 U 0.06 4 0.2 9 6.1 9 0.22 2 4.0 8 12. 4

0.00 5 U 0.0 6 0.2 7 8.0 3 0.331 3.8 9 11. 8
2 U 2. 4 1 J 37 2 2 U 69 0 A01 L i l a Gulc h L16S11-0 1 M-CGAHL4M11W 7 11/19/9 7

.1 0 5.5 2 139 0
4 9 2 U 32 2 2 N M 34. 5 N M N M 0.1 6 2. 4 3. 6 89 0 N M N M

0.00 1 U 0.01 2 0.0 1 U 3.3 4 0.00 1 2.5 3 3.9 2

0.00 2 0.01 3 0.0 1 4.4 7 0.06 4 2.4 6 3.9 8
4 9 0. 3 U

94 7 2 U 134 0 L190364

I M-CGA«L41-MC1 S 06/15/9 8
3.4 8 6.6 2 111 2

1 5 2 U 16 7 1 J N M 34. 6 N M N M 0.1 8 2.3 J . O 57 0 N M N M

0.00 2 U 0.023 9 0.0 2 J 2.3 4 0.005 2 3.0 5 4.9 1
0.00 2 U 0.021 6 0.0 4 J 3.4 2 0.076 6 2 9 4.9 7
1 5 -1. 7 N M 56 0 2 U 850 J

L

I 1863-0 5 —— — M-SPHMl-llO * 11/23/9 6
0.0 1 3.1 7 170 5
2 U 2 U 22 7 J 3 0. 2 J 97. 1 0.0 1 U J 0.0 2 U 0.0 2 U 2. 5 5. 4 135 0 0.00 5 U 0.00 6 J

0.00 5 U 0.05 8 0. 1 56. 2 0.39 4 60. 8 46. 5
0.00 5 U 0.05 6 0.0 7 5 3 0.39 1 52. 5 42. 8
2 U 0. 1 2 J 96 7 2 U 174 0 SPR 8

— — — Spri,

. L14220-0 9 M-SPBMUlIt T 06/11/9 7 (0.01 ) 2.6 5 1586
2 U 2 U 11 7 1. 6 J 0.2 J 64. 3 0.0 1 U 0.0 6 J 0.0 6 J 2.5 4. 5 71 0 0.47 3 0.00 5 U J

0.00 2 U 0.10 7 0. 2 7.6 9 0.58 1 30. 6 36. 7
0.0 1 J 0.10 8 0. 2 11. 9 0.74 5 30. 4 35. 2
2 U 0. 7 1 J 55 7 2 U 115 0 L16511-0

2 M.SPRMT-111W 7 11/19/9 7 (0.01 ) 1.7 1 198 0
2 U 2 U •?fi i 5 N M 10 6 N M N M 0.0 2 U 2. 8 8 1390 N M N M

0.00 1 U 0.0 6 0.0 9 33. 7 0.2 5 56. 8 41. 4
0.00 1 U 0.05 6 0.0 8 30. 3 0.2 3 5 2 38. 4
2 U 1. 8
114 0 2 U 206 0 L19036-0 6

M.SPRM1.»M1 5 06/15/9 8
0.00 2 3.2 8 197 0
2 U 2 U 21 1 5 N M 10 1 N M N M 0.0 5 J 3. 4 6. 9 124 0 N M N M

0.0 1 U 0.09 6 0.1 2 15. 1 0.61 4 60. 2 4 7

0.0 2 U 0.09 1 0.1 2 J 13. 6 0.56 7 58. 3 46. 3
2 U -0. 6 N M 94 3 2 U 187 0 J

ef t " cubi c fee t pe r second

. N M » No t measured

. (0.002 )

- Value s I n parenthese s indicat e i n estimate d value

. U

- No t detecte d a t th e indicate d metho d detectio n limi t (MDL)

. J

- Estimated

. J

- - Estimated

, biase d tow

. U J * Undetecte d a t estimate d MDL

.

:\53«\98SAMP\MFGSW.WB 2 Page 1 5 o f 1 5 09/23/9 8

## UNITE D

STATE S ENVIRONMENTA L

PROTECTIO N AGENC Y REGIO N VII I 9 9 9 18t h STREE T

- SUIT E 50 0 DENVER

, COLORAD O 80202-246 6 

# Ref : 8EPR-S R ACTIO N MEMORANDUM 

# CONCURRENC E COP Y DATE : SUBJECT :

FROM : T O : 

# Januar y

26
, 200 0 

# Request fo r Removal (Response ) Actio n a t th e Californi a Gulc h Nationa l 

# Prioritie s Lis t Site

, Leadville

, Colorado : ACTIO N MEMORANDU M fo r a Time

- 

# Critica l Removal Actio n fo r a t th e Apach e Tailing s Impoundmen t (Operabl e Uni t 7 ) Rebecca Thoma s 

# Remedia l Projec t Manage r M a x H

. Dodso n Assistan t Regiona l Administrato r Offic e o f Ecosystem s Protectio n an d Remediatio n Fina l NP L Sit e I D # 2 9 CERCLI S I D # COD98071793 8 

# Categor y o f Removal : Time-Critica l I

. Purpos e Thi s Actio n Memorandu m document s th e Agency' s selectio n an d implementatio n 

# o f th e tim e critica l remova l (response ) actio n describe d herei n fo r th e Apach e Tailing s Impoundments

, a n are a contaminate d wit h metal-lade n tailing s fro m 

# histori c minin g an d millin g operations

. Th e Apach e Tailing s Impoundmen t are a comprise s a smal l portio n o f th e Superfun d RI/F S Stud y Are a o f th e Californi a Gulc h Superfun d Site

, locate d i n th e Leadvill e minin g distric t o f Lak e County

, Colorado

. T h e Tim e Critica l Remova l Actio n a t th e Apach e Tailing s Impoundment s i s consisten t wit h the remedia l activitie s whic h wil l b e undertake n b y EP A at O U 7

. Fina l remedia l alternative s fo r al l area s o f O U 7 wil l b e evaluate d in th e Focuse d Feasibilit y Stud y (FS ) an d Recor d o f Decisio n (ROD ) fo r OU7

. Th e RO D fo r O U 7 

# wil l ultimatel y specif y thos e remedia l action s beyon d thos e respons e action s implemente d pursuan t t o thi s Actio n Memorandu m tha t ar e required

.

Printed

on Recycled Paper

# Thi s

Removal Actio n wil l involv e th e Mai n Tailing s Impoundmen t an d th e Nort h Impoundment

. Thes e ar e show n o n Drawin g No

. 5344-C 1 attached

. Th e primary goal s o f th e respons e actio n a t th e Mai n Tailing s Impoundmen t ar e t o eliminat e th e accumulatio n o f water i n thes e area s an d prepare ^ th e tailin g unde r th e fil l placemen t footprint

, throug h consolidatio n an d dewatering

, fo r futur e excavatio n activities

. Th e primary goa l o f th e respons e actio n a t th e Nort h Impoundmen t i s t o reduc e infiltratio n o f surfac e wate r i n th e are a whic h ha s bee n identifie d a s a sourc e o f metal s loading t o groundwater

. Remedia l actio n objective s wer e identifie d i n th e Final Screening Feasibility Study fo r Remediation Alternatives a t th e California Gulch A/P L Site, Leadville, Colorado (SFS)

, (ERA

, 1993a)

. Consisten t wit h th e SFS

, remova l actio n objective s fo r th e 

# Apach e Tailing s Impoundment s are : 

# O Contro l water erosio n o f tailing s materia l fro m th e sourc e location s O Contro l leachin g an d migratio n o f metal s fro m tailing s int o surfac e water Q Contro l leachin g an d migratio n o f metal s fro m tailing s int o groundwate r Remova l alternative s t o directl y remediat e surfac e wate r o r groun d wate r i n th e vicinit y o f th e Apach e Tailing s Impoundment s hav e no t bee n evaluated

, an d wil l b e 

# addresse d unde r Operabl e Uni t 12

. I I

. Californi a Gulc h

- Sit e Condition s an d Backgroun d T h e Californi a Gulc h Site wa s liste d o n th e Nationa l Prioritie s Lis t o n Septembe r 8
, 1983

. Th e Site i s i n a minin g are a coverin g 1 6 V z squar e mile s o f a watershe d tha t drain s alon g Californi a Gulc h t o th e Arkansa s River

. Startin g in 1859
, th e are a wa s mine d extensivel y fo r gold

, lead

, silver

, copper
, zinc
, an d manganese

. Californi a 

# Gulc h collect s runof f tha t drain s numerou s abandone d mine s an d waste s fro m mining
, millin g an d smelting

. Miner s buil t th e Ya k Tunne l t o drain wate r fro m th e min e working s an d t o mak e minera l exploratio n an d developmen t easier

. Thi s 

# tunne l drains hundred s o f mile s o f min e working s i n it s 4-mil e undergroun d cours e a n d prio r t o th e constructio n o f th e Yak Tunne l Wate r Treatmen t Plant

, discharge d approximatel y 21 0 ton s o f metal s eac h yea r int o Californi a Gulch

. Seventy-fiv e know n mill s dumpe d tailing s int o 5- 6 mile s o f drainages

. Si x impounde d tailing s dump s surroun d th e Cit y o f Leadville

. Man y smelters

, whic h ar e locate d around th e

Printed on Recycled Paper

# city
,

processe d silver

, lea d an d zin c a t variou s times

. Heav y meta l residue s ar e presen t i n muc h o f th e City

. Th e Arkansa s Rive r which receive s wate r fro m th e Californi a Gulch

, has bee n classifie d as a recreationa l resource , an d i s use d 

# heavil y fo r irrigation
, livestoc k watering
, publi c wate r supplie s an d fisheries

. Approximatel y 7,40 0 liv e i n nearb y Leadvill e an d Lak e Count y (Se e Exhibi t 1 -Site Locatio n Ma p an d Exhibi t 2 - Operabl e Uni t Map ) Apach e Tailing s Impoundment s A

. Backgroun d T h e Apach e Tailing s Impoundment s no w consis t o f th e Mai n Tailing s Impoundmen t an d th e Nort h Tailing s Impoundment

. Th e smalle r 

# impoundments

, TP 2 an d TP3

, whic h wer e locate d alon g Californi a Gulch

, approximatel y 1,50 0 fee t downstrea m o f th e Ya k Tunne l Wate r Treatmen t Plan t Surg e Pon d wer e removed in 1997

. Th e materia l remove d wa s take n 

# t o th e Mai n Tailin g Impoundment

. Th e mai n impoundmen t encompasse s approximatel y 11. 3 acre s an d contain s a n estimate d 630,00 0 cubi c yard s o f tailin g material

. Th e embankmen t slope s o n th e nort h an d eas t sid e o f th e mai n impoundmen t rang e fro m 1.5: 1 (H:V ) t o 1.75: 1 an d reac h height s u p t o 1 5 feet

. Th e embankmen t slop e o n th e southwes t sid e o f th e main impoundmen t approache s 1: 1 and i s u p t o 50 fee t i n height

. 

# A fiel d investigatio n was conducte d i n Novembe r an d Decembe r 199 6 t o supplemen t th e existin g dat a presente d i n th e Remedia l Investigatio n an d Feasibilit y Stud y fo r th e site

. Th e purpos e o f thi s investigatio n wa s t o gathe r 

# dat a t o enhanc e th e evaluatio n o f th e interactio n o f surfac e wate r an d groundwate r i n th e immediat e vicinit y o f th e Apach e Tailing s Impoundments

. A s par t o f thi s supplementa l fiel d investigation
, 1 1 ne w groundwate r 

# monitorin g well s wer e installe d a t th e site

. Tw o round s o f groundwate r an d 

# surfac e wate r samplin g wer e planne d a t th e sit e a s par t o f th e supplementa l 

# investigation ; on e samplin g even t was performe d i n Novembe r 199 6 t o coincid e wit h low-flo w condition s a t th e sit e involve d th e samplin g o f 1 8 groundwate r wells

, an d surfac e water sampling a t 2 2 locations

. Additiona l 

# detail s are provide d i n th e Interim Removal Action Plan, Operable Unit 7
, Ca l Gulch Superfund Site, date d April 3,199 7 an d a lette r date d Marc h 13,199 7 

# which transmit s th e monitorin g dat a fo r th e samplin g even t describe d above

. Bot h thes e document s ar e attache d t o th e April 7
, 199 7 Actio n 

# Memorandum

.

Printed on Recycled Paper

# B

.

Sit e Characterizatio n - Apach e Tailing s Impoundmen t T h e result s o f previou s investigation s relate d t o th e Apach e Tailing s Impoundmen t ar e presente d i n various report s includin g th e Tailing s Disposal Area Remedial Investigation Report, California Gulch Site, 

# Leadville, Colorado, Januar y 1994
, th e Hydrogeologic Remedial Investigation Report (1995)

, and the Surface Water Remedial Investigation Report (1995)

. I n Januar y 1996
, a Draft Feasibility Study (PS ) wa s submitte d fo r th e Apach e Tailing s Impoundments

. Subsequen t t o th e submitta l o f th e draf t FS

, additiona l sit e investigatio n activitie s hav e bee n initiate d t o supplemen t th e 

# previou s investigation s an d t o suppor t completio n o f th e FS

. T h e principa l concern s specificall y addresse d b y this Remova l Actio n are :
• Impact s th e tailing s impoundment s ma y hav e o n surfac e wate r an d groundwate r qualit y i n Californi a Gulch ; an d

• Preparatio n o f th e tailing s material

, primaril y throug h consolidatio n a n d dewatering

, t o facilitat e th e timel y implementatio n o f future

, fina l respons e actions

. B

. 1 A lette r repor t date d Septembe r 23
, 199 8 whic h summarize s surfac e wate r an d groundwate r qualit y dat a fro m samplin g event s performe d i n th e are a o f th e Apach e Tailing s Impoundments

, durin g Novembe r a n d Decembe r 1996 ; Jun e 1997 ; Novembe r 199 7 an d Jun e 199 8 i s 

# attached

. C

. Othe r Action s t o Dat e



# • A Tim e Critica l Remova l Actio n was performe d b y ER A o n th e Apach e Energ y an d Mineral s Propert y whic h i s include d i n Operabl e Uni t 7

. T h e actio n involve d removal o f drum s an d bags o f pyrit e an d 

# decontaminatio n an d demolitio n o f building s an d equipment

. Thi s Remova l Actio n wa s addresse d in a separat e Actio n Memorandu m date d Augus t 6
, 1996

. 

# • Durin g th e summe r an d fal l o f 1995
, ASARC O installe d approximatel y 6 horizonta l drai n pipe s t o passivel y drai n water fro m th e mai n impoundment

. Th e demonstratio n projec t prove d ineffectiv e i n drainin g th e tailing s an d was abandoned

. Ove r th e pas t severa l year s ASARC O ha s monitore d wate r level s o n to p o f th e mai n impoundmen t an d TP s 2 an d 3 an d a s needed

, th e ponde d wate r ha s 

# bee n transferre d t o th e Yak Treatmen t plan t t o preven t catastrophi c releas e o f th e metal-lade n wate r int o Californi a gulch

.

Printed

on Recycled Paper

# : CALIFORNIA SUPERFUND SITE

Source : SMI/TerraMalrlx

.

1996 a 

# EXHIBI

T 1 

# Californi a Qulch Superfun d Sit e Genera l Locatio n Ma p Leadvllle

, Colorad o

### vt&xmiTsx^—T

.- « — • «•-- : : OULC H TAIUNG S IMPOUNDMEN T

. ____ ... *LFJ3 « "VT'MtSIFtJ

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[LOWE R MALT A GULC H

/ • • -*5v * s •••; <!t 'i i 

## /?^l,.

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: 

## ff|fp i

"

. "•' " •.>;'••' ;

. l

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. 

### Op6«W e Unit e an d AfwwofRssponstbilit V

# A

Remova l Actio n whic h wa s performe d fro m Apri l 21
, 199 7 thr u Augus t 27,199 7 involve d remova l o f Tailing s Pond s # 2 an d #3

. Th e 

# materia l fro m th e pond s was transporte d t o an d distribute d o n th e surfac e o f th e Mai n Tailing s Impoundmen t a s shown o n Drawin g No

. 5344-C 2 (Cop y attached)

. Additiona l informatio n concernin g thi s respons e actio n i s availabl e i n th e Fina l Pollutio n Report

, Jun e 30
, 1998

. 

# D

. Stat e an d Loca l Authorities Role s A cultura l resourc e investigatio n o f th e Apach e Tailing s Are a wa s conducte d i n 1995

. Al l o f th e activitie s involve d wit h thi s respons e actio n involv e previousl y disturbe d material s o r material s which have bee n generate d a t O U 9 a s a result s o f removal action s performe d unde r th e Min e Wast e Pil e Removal Action

. 

# I V

. Threat s t o Publi c Healt h o r Welfar e o r th e Environmen t A Final Baseline Aquatic Ecology Risk Assessment (FBAERA)

, Californi a Gulch

, 

# Leadville

, Colorad o (Ro y F

. Weston

, Inc. ) identifie s th e Site-wid e impac t o f min e wast e contaminatio n o n th e terrestria l an d aquati c ecosystem s a t th e Site

. Th e 

# FBAER A provide s a conceptua l mode l o f Site-wid e exposur e fo r aquati c receptors

. Thi s Time-Critica l Remova l Actio n is necessitate d b y th e threa t t o publi c health

, welfar e and/o r th e environmen t pose d b y th e direc t contact
, inhalation

, an d 

# ingestio n exposur e routes t o hazardou s substances

. Th e respons e actio n a t th e Mai n Tailing s Impoundmen t i s bein g performe d a s a preparator y ste p t o subsequen t remedia l action

. Th e respons e actio n a t th e Nort h Impoundmen t wil l eliminat e pondin g o f wate r i n a n are a tha t ha s bee n identifie d a s a sourc e o f metal s loading

. 

# T h e action s wil l als o reduc e release s o f metal s t o th e surfac e an d groundwater

.

Printed on Recycled Paper

# V

. Endanaermen t Determinatio n Actua l and/o r threatene d release s o f hazardou s substance s fro m th e Apach e Tailing s Impoundments

, i f no t addresse d b y implementing th e removal actio n 

# selecte d i n thi s Actio n Memorandum

, present s endangermen t t o publi c health

, o r welfare

, o r th e environment

. Th e publi c an d environmen t wil l continue d t o b e expose d t o th e releas e o f significan t quantitie s o f contaminate d materials

. V I

. Propose d Actions/Schedul e A

. Propose d Action s 

# 1

. Th e propose d interi m action s ar e describe d i n th e Interim Removal Action Plan, Operable Unit 7, Apache Tailings Impoundments, California Gulch Superfund Site, date d Septembe r 9
, 1999

. Th e propose d interi m action s includ e th e following : MAI N TAILING S IMPOUNDMEN T



# 1 . 1 A tota l o f approximatel y 11,00 0 cubi c yard s o f fil l materia l wil l b e 

# neede d t o achiev e th e grade s require d t o eliminat e surfac e wate r pondin g an d t o accelerat e th e consolidatio n an d dewaterin g o f th e tailing s material

. Th e fil l materia l require d wil l b e generate d from :
• Excavatio n o f materia l place d o n th e Mai n Impoundmen t durin g th e remova l o f TP 2 an d TP 3 i n 199 7 (approximatel y 1,00 0 cubi c yards) ;


# • Regradin g th e easter n embankmen t o f th e Mai n Impoundmen t t o a 3(H):1(V ) slop e (approximatel y 2,00 0 cubi c yards) ; Regradin g th e southwes t embankmen t in th e vicinit y o f th e 

# woode n bo x culvert

, (approximatel y 1,50 0 cubi c yards) ; an d

• Excavatio n o f tailin g materia l overlyin g th e clay-til e culver t a t 

# t h e souther n edg e o f th e Mai n Impoundmen t (approximatel y 7,00 0 cubi c yards)

. 

# T h e tailin g excavatio n area s identifie d o n th e Mai n Impoundmen t ar e considere d t o b e consisten t wit h activitie s tha t ma y b e require d unde r an y o f th e actio n alternative s considere d i n th e O U 7 FFS

.

Printed on Recycled Paper1

. TAUN B FOM U MM

. X M O 3 «B C «M 9 OtM M JU Y AN D MMUS T 1M T •© • i i m mn a mm z (Mu n m o > « AiMmw r HATDU

L no t wt r TM/TT S MDIQVA L o n IM E mur e u x t AUW/MJMUO C HATDU L no t wt r T HAICHM

. flM H O M fO H PM1AN ) fi t MATEftM

. APACH E TAIUN Q IMPOUNDMENT S 

### PLACEMEN T O F PRELOA D FIL L 

### A T APACH E IM»|O«B

. no

. 5344-C 2 ni l HMIC ! a\M44\M«4-lM.Q« C

# A

s par t o f th e excavation/constructio n

activitie s outline d above

, a berm wil l b e maintaine d a t th e to p o f th e regrade d slope s t o direc t runof f fro m th e to p surfac e o f th e Mai n Impoundmen t t o th e remainin g ponde d are a t o preven t flo w fro m overtoppin g an d erodin g th e regrade d slopes

. Positiv e drainag e wil l als o b e maintaine d towar d th e pon d fro m th e area(s ) fro m which th e TP2/TP 3 materia l i s excavated

. Excavatio n i n th e are a ove r th e clay-til e 

# culvert s wil l b e maintaine d suc h tha t wate r wil l no t poo l an d wil l drai n t o Californi a Gulch

. Tailing s tha t ar e expose d o n th e nort h sid e o f t h e excavatio n ove r th e cla y til e culvert s wil l b e covere d wit h 1 ft

. minimu m o f clea n fil l material

. Prio r t o th e installatio n o f preloa d fil l placemen t regradin g activities
, roc k fil l 

# wil l b e place d alon g th e to e o f a portio n o f th e southwes t embankmen t o f th e Mai n Impoundmen t t o buttres s an d improv e th e slop e stabilit y i n thi s area

. 

# Th e portio n o f th e embankmen t t o b e buttresse d i s locate d betwee n th e outle t o f th e woo d bo x culver t an d th e tailing s kno b which extend s ou t int o 

# th e channe l a s show n o n Drawin g No

. 5344-C 2 attached

. Wate r presentl y ponde d o n th e souther n portio n o f th e Mai n Impoundmen t surfac e wil l b e removed t o facilitat e th e placemen t o f th e preloa d fill

. Th e norther n an d souther n area s o f th e existin g pon d wil l be divide d b y th e constructio n o f a n interi m dik e a t th e norther n edg e o f th e fil l placemen t

area

. Onc e th e divide r dik e has bee n constructed

, wate r i n th e souther n portio n wil l b e pumpe d t o th e norther n portion

. Th e divide r dik e wil l b e 

# constructe d b y placin g wove n geotextile

, a s necessar y fo r subgrad e support
, 

# acros s th e pon d an d placing tw o t o thre e fee t o f coars e soil materia l (subgrad e material s removed fro m TP2/TP3 ) ove r th e fabric

. T o maintai n a n equivalen t storag e capacit y o f th e pon d followin g fil l placement

, th e 

# intersectio n o f th e acces s road s t o monitorin g well s MW11S/ D an d MW12S/ D (currentl y th e lo w poin t o f th e ponde d area ) wil l b e raise d a s 

# necessar y t o achiev e a minimu m elevatio n o f 10,11 4 feet

. Durin g excavatio n an d regradin g activities
, on-sit e transport
, an d placemen t

o f tailin g material

, appropriat e engineerin g control s wil l b e maintaine d t o contro l stor m wate r runof f an d dus t generation

. Sil t fence

, o r othe r temporar y sedimen t contro l devices

, wil l b e installe d a t th e bas e o f th e impoundmen t embankment s t o b e regrade d t o intercep t an d retai n sedimen t 

# in stor m wate r runoff

. Whil e dus t contro l wil l no t likel y b e require d in th e excavatio n an d fil l placemen t areas , dus t contro l o n th e hau l rout e wil l b e 

# maintaine d throug h wate r application

, a s necessary

. Severa l settlemen t plate s wil l b e installe d i n th e fil l placemen t are a t o monito r settlement/consolidatio n

o f th e underlyin g tailing s a s a resul t o f th e loadin g fro m th e fill

.

Printed on Recycled Paper

# NORT

H IMPOUNDMEN T 

# Constructio n activitie s t o b e performe d o n th e Nort h Impoundmen t woul d involv e fil l placemen t ove r th e are a indicate d o n Drawin g No

. 5344-C 1 

# attached

. I t i s estimate d tha t approximatel y 4,000 cubi c yard s o f fil l materia l 

# woul d b e require d t o preven t th e accumulatio n o f surfac e wate r i n thi s area

. T h e majorit y o f th e fil l materia l (approximatel y 3,00 0 cubi c yard s woul d b e 

# min e wast e materia l fro m pile s currentl y bein g removed unde r th e O U 9 Min e Wast e Pil e Remova l Action

. Th e uppe r 1 foo t o f th e fil l materia l woul d consis t o f clea n fil l haule d fro m th e of f sit e sourc e identifie d i n th e OU 9 Min e Wast e Pil e Removal Actio n Wor k Plan

. O U 9 Min e Wast e Materia l ha s bee n selecte d fo r us e a s fil l becaus e o f th e no n aci d generatin g potentia l an d 

# materia l characteristic s which shoul d resul t i n a lowe r permeabilit y materia l d u e t o th e fine r grai n siz e characteristic s compare d t o th e clea n borrow fill

. T h e fina l regrade d surfac e woul d b e slope d t o th e south

. B

. Applicabl e o r Relevan t and Appropriat e Requirement s (ARARs ) T h e ARAR s liste d o n TABL E F. 1 AN D F. 2 wil l b e followe d t o th e exten t 

# practicable

. Copie s o f thes e Table s ar e attached

. C

. Performanc e Standard s 1

. Th e designe d an d constructe d respons e actio n include s provision s t o ensur e 

# tha t ther e ar e n o visibl e emission s (dust ) durin g remova l activitie s a t th e Apach e Tailing s Impoundments

. Dus t contro l o n th e hau l route
, an d othe r areas , wil l b e maintaine d throug h wate r application

, a s necessary

. 2

. Durin g th e excavation
, on-sit e transport
, an d placemen t o f tailing s material

, 

# appropriat e engineerin g control s wil l b e maintaine d t o contro l stor m wate r runof f an d dus t generation
, sil t fences

, hay bale s and/o r othe r sedimen t contro l device s wil l be use d t o intercep t an d retai n sedimen t i n stor m wate r 

# runoff

. Th e sedimen t contro l structure s wil l b e lef t i n place

, a s necessar y followin g th e completio n o f excavation

. Un-contaminate d surfac e wate r wil l 

# b e diverte d awa y fro m th e tailing s t o minimiz e contac t wit h tailings

.

Printed on Recycled PaperREVSCN S a

y I oa t I "" •

C* A OU

. o a 

### ASARCO 

### IMPOUNDMENT S SIT E 

### M A P H T C gPTOBE B IM S |o» q HO

. 5344-C 1

# 3

.

A long-ter m maintenanc e progra m ma y b e implemente d i f require d b y th e Fina l Recor d o f Decisio n fo r Operabl e Uni t 7 (O U 7 ) t o ensur e th e long-ter m effectivenes s o f th e respons e action

. D

. Projec t Schedul e T h e respons e actio n wa s complete d in Octobe r 1999

. E

. Estimate d Cost s This respons e actio n is bein g conducte d b y ASARCO

, Inc

. VII

. Expecte d Chang e i n th e Situatio n Shoul d Actio n B e Delaye d o r N o t Take n I f thi s Time-Critica l remova l actio n i s delayed

, o r no t taken

, exposur e o f th e publi c an d environmen t t o heav y metal s containe d i n th e min e wast e locate d i n th e Apach e Tailing s Impoundment s wil l continue

. Withou t thi s time-critica l response
, releas e o f contaminate d tailing s int o Californi a Gulc h an d th e Arkansa s Rive r wil l continu e t o contaminat e surfac e wate r an d groundwate r i n th e are a aroun d th e Apach e Tailing s Impoundments

. VIII

. Outstandin g Polic y Issue s 

# A Recor d o f Decisio n wil l b e issue d selectin g th e fina l remedia l actio n fo r Operabl e Uni t 7 (OU 7 ) o f thi s Site

. 

# I X

. Enforcemen t Thi s Time-Critica l Remova l Actio n wil l b e performe d by ASARCO

, Inc

.

Printed on Recycled Paper

# X .

. Recommendatio n Thi s decisio n documen t represent s th e selecte d Time-Critica l removal actio n fo r th e Apach e Tailing s Impoundment s portio n o f O U 7 o f th e Californi a Gulc h Superfun d Site

, i n th e Cit y o f Leadville

, Count y o f Lake

, Stat e o f Colorado

. I t wa s develope d i n accordanc e wit h CERCLA

, a s amended

, an d i s no t inconsisten t wit h th e NCR

. Thi s decisio n i s base d o n th e Administrativ e Recor d fo r th e Site

. Condition s a t th e Apach e Tailing s Impoundment s mee t th e NC R Sectio n 

# 300.415(b)(2 ) criteri a fo r a removal an d I recommen d approva l o f th e remova l action

. APPROVA L

M a x H

. Dodso n 

# Assistan t Regiona l Administrato r Offic e o f Ecosystem s Protectio n an d Remediatio n

DISAPPROVAL



# M a x H

. Dodso n 

# Assistan t Regiona l Administrato r Offic e o f Ecosystem s Protectio n an d Remediatio n

^x? Printed on Recycled Paper

1 0

### providin g environmenta l

49O O Pear l Eas t Circl e Suit e 3OO W 

### consultin g an d Boulder

. Colorad o 8O3O 1 

### engineerin g service s 3O3/447-182 3 Fax : 447-183 6 

### rvlcCulle y Fric k & Oilman

, me

. 

## Septembe r 23
, 199 8 M F C Projec t No

. 5344. 2
M s

. Austi n N

. Buckingha m 

## Colorad o Departmen t o f Publi c Healt h an d Environmen t Hazardou s Material s an d Wast e Managemen t Divisio n 430 0 Cherr y Cree k Driv e Sout h Denver

, C O 80246-153 0 

# R E : TRANSMITTA

L O F JUN E 199 8 MONITORIN G DAT A OPERABL E UNI T l (OU7 )

- APACH E TAILING S CALIFORNI A GULC H SUPERFUN D SITE

, LEADVILLE

, COLORAD O

Dea r Austin : 

## McCulley

, Fric k & Oilman

, Inc

. (MFG ) i s please d t o provid e thre e copie s o f table s summarizin g 

## fiel d paramete r measurement s an d validate d surfac e wate r an d groundwate r qualit y dat a fro m th e Novembe r 

## 1996
, Jun e 1997
, Novembe r 199 7 an d Jun e 199 8 monitorin g event s a t th e Apach e Tailing s area

. Th e attache d surfac e wate r qualit y dat a tabl e include s informatio n fo r statio n TPD

, a sprin g wher e groundwate r 

## discharge s t o th e surfac e i n th e vicinit y o f th e southwester n corne r o f forme r Tailing s Pon d No.3

. Als o enclose d i s a tabl e whic h summarize s monthl y wate r leve l measurement s mad e i n monitorin g well s an d piezometer s withi n an d nea r th e Apach e Tailing s Impoundmen t sinc e Novembe r 1996

. I f yo u hav e an y questions
, pleas e d o no t hesitat e t o call

. 

## Sincerely

, 

# MCCULLEY

, FRIC K & GILMAN

, INC

.

t 

# /2^_

_ >

. £^<- Benc e V

. Close

, P.E

. Associat e Engineer/Geohydrologis t GSD/BVC/sj b attachment

cc : Rus s Alien

, CDPH E To m Hesemann

. RM C Rober t Litle

, Asarc o 

### Pau l Rosasco

, EMS I Gar y Slifka

, Asarc o 

### Rebecc a Thomas

, EP A Sher m Worthington

, SM I

J:\5344\COMM\ABUCKI3.LT

R Albuquerque

. N M • Austin

. T X • Boston

. M A • Boulder

. C O • Missoula

. M T • Por t Lavaca

. T X • Sa n Francisco

, C A • Seattle

. W A • Wallace

. I D S