### FINA L EXHIBI T 3

0-42S 1 3 

## ADMINISTRATIV E RECOR D PHI V


## SOI L INVESTIGATIO N WORK PLA N CALIFORNI A GULC H STUD Y ARE A LEADVILLE
, COLORAD O Jul y 199 1

Prepare d fo r ASARCO
, Incorporate d Leadville
, Colorad o Prepare d b y 

## Woodward-Clyd e
458 2 Sout h Ulste r Stree t Parkwa y Stanfor d Plac e 3 , Suit e 100 0 Denver
, Colorad o 8023 7 Projec t No

. 22443E-335 0

### FINA L EXHIBI T 3



### SOI L INVESTIGATIO N WOR K PLA N 

## CALIFORNI A GULC H STUD Y ARE A LEADVILLE
, COLORAD O 

## Jul y 199 1

Prepared fo r ASARCO
, Incorporate d Leadville
, Colorad o Prepare d b y 

## Woodward-Clyd e
458 2 Sout h Ulste r Stree t Parkwa y Stanfor d Plac e 3 , Suit e 100 0 Denver
, Colorad o 80237 Projec t No

. 22443E-335 0

### Woodward-Clyd e Consultant s
TABL E O F CONTENT S Sectio n Pag e 1. 0 INTRODUCTIO

N 1- 1 1. 1 SOIL S WOR K PLA N AN D STUD Y ARE A 1- 1 1. 2 WOR K PLA N OVERVIE W AN D PURPOS E 1- 2 2. 0 SCOP E O F WOR K 2- 1 2. 1 DAT A QUALIT Y OBJECTIVE S 2- 1 2. 2 IDENTIFIE

D DAT A GAP S 2- 2 2. 3 PROPOSE D WOR K 2- 3 2.3. 1 Soi l Inventor y 2- 3 2.3. 2 Surficia l Geologi c Ma p o f th e Stud y Are a 2- 7 3 . 0 SAMPLIN

G AN D ANALYSI S PLA N 3- 1 3. 1 FIEL D SAMPLIN G PLA N 3- 1 3.1. 1 Samplin g Objective s an d Sampl e Location s 3- 1 3.1.2 Soi l Mappin g an d Profil e Descriptio n 3- 2 3.1. 3 Samplin g Handlin g an d Documentatio n 3- 2 3.1. 4 Decontaminatio n

3-2 3.1. 5 Sampl e Preparatio n 3.1. 6 Detectio n Limit s 3. 2 QUALIT Y ASSURANC E (QA ) PROJEC T PLA N 3- 2 3.2. 1 Projec t Organizatio n 3- 3 3.2. 2 Laborator y Qualit y Assurance/Qualit

y Contro l 3- 3 3.2. 3 Qualit y Assuranc e Objective s an d Qualit y Contro l 3- 4 3.2. 4 Dat a Validatio n 3- 4 3.2. 5 Audits
, Nonconformances
,

an d Correctiv e Action s 3- 4 3.2. 6 Qualit y Assuranc e Report s 3- 4 4. 0 SCHEDUL E 4- 1 5. 0 REFERENCE

S 5- 1

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### Woodward-Clyd e Consultant s
TABL E O F CONTENT S (Concluded ) LIS T O F TABLE S TABL E 2- 1 PRELIMINAR Y

SOI L LEGEN D FO R TH E SOI L MA P FO R LEADVILL E AN D STRINGTOW N TABL E 3- 1 PROJEC T REQUIRE D DETECTIO N LIMIT S LIS T O F FIGURE S FIGUR E 1- 1 RI/F S STUDY AREA S FIGUR E 4- 1 SOIL S SCHEDUL E LIS T O F APPENDIXE S APPENDI X A STANDAR D

OPERATIN G PROCEDURE S

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# Woodward-Clyd e Consultant s

1. 0 INTRODUCTIO N Th e Soil s Investigatio n Wor k Pla n i s on e sectio n o f th e overal l Phas e I I Remedia l Investigatio n (RI ) Wor k Pla n fo r th e stud y are a in Leadville
, Colorado

. Th e activities describe d i n thi s wor k pla n ar e complemente d b y activitie s se t fort h i n tw o additiona l
wor k plan s t o b e carrie d ou t b y Resurrectio n an d EMSL

. Thi s wor k pla n present s th e scop e o f th e investigatio n an d th e fiel d an d laborator y procedure s fo r th e collectio n o f dat a fro m bot h populate d an d nonpopulate d area s locate d withi n th e stud y area . Thi s sectio n o f th e wor k pla n describe s th e stud y area , propose d tasks , literatur e review , an d purpos e for th e soi l samplin g even t i n Leadville
, Colorado

. Soils
, a s reference d i n thi s text , refer s t o natura l soils ; surficia l material s refer s t o material s suc h a s sla g an d othe r smelte r wastes , tailing , wast e rock , ore , an d clean fil l whic h ma y b e mixe d wit h soil s i n the stud y area . 1 . 1 SOIL S WOR K PLA N AN D STUD Y ARE A Th e soil s wor k pla n wil l incorporat e a n are a o f approximatel y 1 6 squar e miles an d b e referre d t o throughou t thi s sectio n a s th e stud y are a (Figur e 1-1)

. Th e stud y are a extend s beyond th e Californi a Gulch drainag e syste m t o include :
• Residentia l distric t northwes t o f Wes t Par k Elementar y Schoo l • Residentia l distric t wes t o f Sain t Josep h Cemeter y 

### • Historica l smelte r are a nea r Povert y Fla t i n Evan s Gulch • Traile r par k nea r the confluenc e o f the Arkansa s Rive r and Californi a Gulc h • Area alon g Arkansa s Rive r downstrea m o f th e Californi a Gulch confluenc e t o th e Lak e For k Mout h - Arkansa s Rive r confluenc e Th e samplin g schem e wil l emphasiz e populate d area s versu s nonpopulate d area s (delineate d o n Figur e 1-1 ) base d o n th e potentia l ris k o f contaminatio n i n thes e areas
. Limite d soi l samplin g relativ e t o soi l profil e characterizatio n i s describe d i n thi s wor k plan

. A mor e extensiv e progra m o f soi l samplin g i s detaile d i n th e Resurrectio n an d
22443-22327/R13. 1

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### Woodward-Clyd e Consultant s
EMS L wor k plans

. Th e propose d stud y consist s o f mappin g surficia l soi l type s an d collectin g soi l samples

. Th e soi l samplin g an d mappin g progra m i s designe d t o collec t sufficien t dat a fo r sit e characterizatio n an d screenin g o f remedia l alternatives

. Surficia l 

### geolog y o f th e stud y are a wil l als o b e investigate d t o evaluat e it s relationshi p t o soil s i n th e area . Jame s P

. Wals h an d Associates
, Inc.
, wil l perfor m al l fiel d wor k fo r th e propose d soi l study

. 1. 2 WORK PLA N OVERVIE W AN D PURPOS E Th e combined objectiv e o f th e thre e Soi l Investigatio n Wor k Plan s i s t o describe i n detai l th e investigatio n whic h wil l collec t sufficien t sample s t o evaluat e th e natur e an d exten t o f metals-contaminate d

soil s an d provid e sufficien t soil s informatio n t o evaluat e remedia l alternatives

. Soi l samplin g effort s an d propose d location s wil l b e evaluate d b y geostatistica l an d historica l revie w o f availabl e data

. Preliminar y dat a necessar y fo r th e conduc t o f a feasibilit y stud y (FS ) fo r th e developmen t o f remediatio n alternatives wil l als o b e collecte d durin g th e RI

. Task s performe d fo r preparatio n o f th e RI/F S Scopin g Document
, Californi a Gulch Site
, Leadville
, Colorad o (Res-ASARC O 1991 ) tha t wer e use d fo r th e developmen t o f thi s soi l samplin g wor k pla n include d literatur e collectio n an d revie w fo r populate d an d nonpopulate d area s t o evaluate :
• Area l distributio n o f dat a collectio n locations • Dat a qualit y • Dat a collectio n date s • Metal s analyze d • Statistica l compatibilit y o f dat a • Geostatistica l

dat a revie w Thi s wor k pla n concentrate s effort s fo r th e propose d 199 1 soi l stud y an d wil l fi t int o th e overal l wor k pla n fo r th e RI

.

22443-22327/R15. 1

7-19-91/RPT/ 6 1- 2T h e

OVERSIZE D MAP S I N THI S DOCUMEN T

ar e availabl e fo r publi c viewin g at REGIO N VII I U.S

. ENVIRONMENTA

L PROTECTION AGENC Y SDPERFUN D RECORD S 99 9 18t h Street
, Suit e 50 0 Denver
, Colorad o 80202-240 5 (303 ) 293-180 7

### Woodward-Clyd e Consultant s

2. 0 SCOP E O F WOR K Dat a qualit y objective s describe d i n thi s sectio n ar e sufficien t fo r a n RI/FS

. Reference s ar e given fo r issue s requirin g furthe r detail

. 2 . 1 DAT A QUALIT Y OBJECTIVE S Dat a qualit y objective s (DQOs ) ar e define d a s statement s whic h specif y th e qualit y an d quantit y o f the data , and defin e the analytica l certaint y require d t o suppor t decision s regardin g a particula r site

. DQO s ar e establishe d t o ensur e tha t the dat a collecte d ar e o f sufficien t quantit y an d qualit y fo r th e intende d uses
. Dat a use s identifie d fo r soi l dat a collecte d durin g th e Phas e I I RI withi n th e stud y are a are :
• Baselin e ris k assessment • Sit e characterizatio n (includin g healt h an d safet y planning ) • Screenin g an d evaluatio n o f remedia l alternative s • Remedia l desig n • Monitorin g remedia l actio n Th e dat a collecte d unde r th e thre e wor k plan s fo r soil s wil l b e use d t o evaluat e th e extent and concentration s o f arseni c (As)
, cadmium (Cd)
, lea d (Pb)
, and zin c (Zn)
, and t o scree n an d evaluat e potentia l remedia l alternatives

. Th e dat a wil l b e sufficien t qualit y tha t i t ma y als o b e use d fo r ris k assessment

. Parameter s whic h ma y affec t th e fate , mobility , an d persistenc e o f th e metal s o f concer n identifie d abov e are : pH
, electrica l conductivit y (E.G.)
, bul k density , percentag e o f lime , particl e siz e distribution , acid-bas e potential , saturatio n percentage , an d organi c carbon

. Th e analytica l techniqu e t o b e use d i n thi s soi l investigatio n wa s chose n for it s abilit y t o mee t th e overal l need s o f th e RI/F S a s specifie d i n Guidanc e fo r Conductin g Remedia l Investigation s an d Feasibilit y Studie s Unde r CERCL A (EPA/540/6-89/004

) an d Dat a Qualit y Objective s fo r Remedial Respons e Activities
, Developmen t Proces s (EPA/540/6-87/003)

.

Accordin

g t o EP A guidanc e (EPA/540/6-89/004
, 22443-22327/R15. 2 07-19-91/RPTY 7 2- 1

### Woodward-Clyd e Consultant s EPA/540/6-87/003)
,

i t i s no t onl y importan t for th e analytica l techniqu e t o b e cost

effective , bu t "i t i s extremel y importan t tha t th e analytica l techniqu e chose n ha s a detectio n limi t wel l belo w th e leve l o f concern " (EPA/540/6-87/003)

.

Base d on thes e criteria , i t wa s determine d tha t EP A Leve l II I analytica l dat a wer e necessar y for the soi l investigation

. Thes e technique s ar e designe d t o provid e "confirme d identificatio n an d quantificatio n o f organi c an d inorgani c compound s i n water , sediment , an d soi l samples " (EPA/540/6-87/003 ) an d "laborator y analysi s usin g standar d EP A approve d procedure s othe r tha n curren t CL P RAS " (EPA/540/6-87/003)

.

T o fulfil l th e requiremen t fo r EP A Leve l II I data , th e laborator y based X-ra y fluorescenc e (XRF ) metho d wit h stric t sampl e preparatio n protocol s an d qualit y assurance/qualit y contro l (QA/QC ) wa s chosen

. Lab

based XR F technique s provid e th e leve l o f qualit y necessar y fo r a n RI/FS
, a s wel l a s cost-effectivenes s wit h rapi d turn-aroun d o f samples

. Th e DQO s fo r soil s metal s o f concer n fo r XR F includ e lead , arsenic , cadmium , an d zinc

. Detectio n limits , QA/Q C samples , an d dat a validatio n procedure s required t o mee t th e objective s o f th e samplin g progra m ar e reference d i n th e wor k pla n prepare d b y EMSL

. QA/Q C sample s required fo r soi l profil e characterizatio n wil l be thos e reference d i n th e Samplin g an d Analysi s Plan
, Ya k Tunne l Operabl e Uni t Qualit y Assuranc e Projec t Pla n (QAPP ) (Res-ASARCO2)

.

Sampl e handling , documentation , identification , labeling , an d trackin g protocol s wil l b e thos e reference d i n th e Samplin g an d Analysi s Pla n Ya k Tunne l Operabl e Unit
, Fiel d Samplin g Plan
, (Res-ASARC O 1990b)
, o r a s revise d i n thi s workplan

. 2 . 2 IDENTIFIE D DAT A GAP S Previou s investigation s conducte d on soil s withi n th e stud y are a wer e reviewe d durin g th e scopin g o f th e RI t o evaluat e th e quantit y an d qualit y o f th e variou s type s o f informatio n available , an d dat a gap s wer e identified

. Thes e dat a gap s indicat e that furthe r dat a are necessar y t o mee t th e dat a qualit y objective s for soi l sit e characterizatio n and remedia l investigation , and t o geostatisticall y revie w availabl e soil s dat a t o develo p futur e soi l samplin g activities , eliminatin g unnecessar y soi l samplin g efforts

.

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### Woodward-Clyd e Consultant s Genera l dat a gap s identifie d are :
• Inadequat e distributio n o f samplin g location s t o characteriz e th e distributio n o f meta l contaminant s
• Inadequat e informatio n abou t physica l and chemica l parameters o f metal

contaminate d soil s t o evaluat e fate , mobility , an d persistenc e o f metal s fo r th e screenin g o f remedia l alternative s
• Inadequat e soil s description s (i.e.
, percentag e o f slag , tailing , wast e rock , smelte r emissions , etc. ) a t samplin g locations t o mak e a possibl e determinatio n o f th e sourc e o f meta l concentration s i n soi l sample s
• Inadequat e determinatio n o f th e possibl e correlatio n betwee n historica l
an d curren t lan d use s an d soi l samplin g dat a
• Lac k o f dat a t o evaluat e th e impac t o f road-sandin g operations usin g sla g fine s o n populate d are a soil s Th e investigation s describe d i n thi s an d th e associate d wor k plan s hav e bee n designe d t o provid e dat a o f sufficien t qualit y an d quantit y t o addres s th e identifie d dat a gaps

. 2. 3 PROPOSE D WOR K Th e propose d wor k fo r soil s withi n th e stud y are a includes : soi l samplin g o f bot h populate d an d nonpopulate d areas , an d soil s mappin g o f al l data

. Thes e task s wil l b e describe d i n followin g section s o f thi s wor k pla n an d the two associate d wor k plans

. The task s ar e designe d t o minimiz e disturbanc e o f th e Leadvill e community

.

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### Woodward-Clyd e Consultant s

2.3. 1 Soi l Inventor y Th e objectiv e o f th e soi l inventor y i s t o develo p a soil/surficia l materia l ma p whic h wil l b e used t o evaluat e a possibl e correlatio n between soil/surficia l materia l typ e an d meta l concentrations

. This informatio n ca n b e use d t o geostatisticall y determin e th e locatio n o f additiona l sample s an d t o minimiz e th e numbe r o f sample s necessar y t o produc e a fina l meta l concentratio n ma p o f the stud y area . Th e specifi c task s fo r th e soi l inventor y ar e to :
• Describ e th e soil s an d surficia l material s t o a dept h o f 1 8 inche s
• Provid e a detaile d soil s an d surficia l material s ma p o f the stud y are a
• Defin e the physica l and chemica l characteristic s o f soil s i n the stud y are a
• Estimat e the percentag e o f material s i n surfac e horizon s includin g natura l soils , mineralize d zones, an d material s potentiall y derive d fro m tailing , min e wast e rock , smelte r wastes, ore , clea n fill , an d sla g Sources o f Informatio n Th e soi l inventor y wil l b e base d o n th e publishe d Unite d State s Departmen t o f Agricultur e Soi l Conservatio n Servic e (SCS ) count y survey , Soi l Surve y o f Chaffee-Lak e Area
, Colorado
, an d Part s o f Chaffe e an d Lak e Counties (SC S 1975a)

. Tha t informatio n wil l b e refine d base d o n detaile d sit e investigations

. Other previou s soi l investigation s i n th e stud y are a wil l b e use d a s appropriate

. Compilatio n o f Existin g Informatio n The soi l inventor y mappin g i n the fiel d wil l b e at two differen t scales ; the stud y area s wil l b e mappe d a t 1 in

. = 50 0 ft

. Th e populate d area s wil l b e mappe d a t 1 in

. = 20 0 ft

. Th e ma p contour interval s wil l b e 5 ft

. Th e SC S mappin g wil l hav e bee n digitize d an d compile d o n th e bas e map

. 22443-22327/RI5. 2 07-19-91/RPTr 7 2- 4

### Woodward-Clyd e Consultant s Stereographi c colo r ai r photo s wil l b e use d t o refin e the SC S soi l ma p i n preparatio n fo r beginnin g fiel d work

. I n addition , fiel d note s o n soi l type s (Wals h an d Associate s sampling , 1987 ) wil l b e compile d ont o a workin g bas e map

. A preliminar y soi l ma p o f the residentia l area s wil l b e produce d fo r us e i n preliminar y geostatistica l analyse s o f the stud y area . Unit s fro m th e surficia l geologi c mappin g wil l b e use d i n definin g soi l paren t materials

. Fiel d Mapping T h e fiel d mappin g wil l follo w th e procedure s o f th e Nationa l Cooperativ e Soi l Surveys (variou s source s includin g Soi l Taxonom y [USD A SC S 1975b ] an d Soi l Surve y Manua l [i n progress])

. Soil s wil l b e mappe d firs t i n populate d area s an d the n i n th e balanc e o f th e stud y area . Th e inventor y i n populate d area s wil l approximat e a detaile d orde r I I surve y a s define d b y Soi l Surve y Staf f (Januar y 1984)

. A n estimate d 40 0 visua l observation s wil l b e mad e i n incorporate d Leadvill e an d Stringtow n (abou t 160 0 acres)
, resultin g i n abou t on e (1 ) observatio n pe r 4 acres
. Th e minimu m siz e delineatio n i n populate d area s wil l b e abou t 0.2 5 acres
. Th e nonpopulate d area s wil l b e mappe d a t abou t a n order H I surve y define d b y Soi l Surve y Staf f (Januar y 1984)

. Th e minimu m siz e delineatio n wil l b e 1. 5 acres
. Mos t o f th e delineation s wil l b e large r tha n thes e minimu m sizes

. Becaus e o f th e natur e o f the distributio n o f surficia l material s i n the area , not al l dissimila r soil s greate r tha n 0.2 5 o r 1. 5 acre s wil l b e delineated

. A s soi l mappin g progresses , th e inventor y tea m leade r wil l develo p soi l ma p unit s an d se t u p a ma p legen d o f natura l soil s an d lan d types

. Tabl e 2- 1 give s a preliminar y lis t
o f ma p unit s whic h ma y b e use d fo r the soil s map

. Thi s lis t wil l b e expande d o r reduce d
a s necessar y durin g the mappin g program

.

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### Woodward-Clyd e Consultant s
Th e soi l inventor y wil l b e conducte d whe n th e supervisio n o f a Certifie d Professiona l Soi l Scientis t certifie d b y ARCPAC S (America n Registr y o f Certifie d Professional s i n Agronomy
, Crop s an d Soils)

. Mappin g o f surficia l deposit s wil l b e reviewe d o n a dail y basi s b y mappin g crew s t o assur e conformanc e o f mappe d units

. Th e unit s wil l b e designe d t o b e readil y mappabl e wit h a definit e rang e o f characteristics

. A roug h draf t soi l ma p wil l b e produce d an d 1 0 percen t o f th e ma p unit s wil l b e fiel d checked t o 

### evaluat e th e accurac y o f th e delineatio n an d t o determin e i f th e rang e o f characteristic s o f th e uni t are adequatel y defined

. Th e soi l ma p i s a supportin g investigatio n and i s no t subjec t t o dat a qualit y objectives

. Th e validit y o f th e soi l ma p wil l be qualitativel y teste d whe n i t i s use d a s th e basi s o f a geostatistica l domai n analysis

. Th e soi l map s ma y b e refine d a s th e projec t progresse s a s mor e observation s o f soi l type s ar e mad e durin g iterativ e soi l sampling

. Th e hole s excavate d fo r th e soi l samplin g wil l b e use d a s additiona l observatio n locations , particularl y i n area s o f intensiv e surfac e disturbance

. I t i s estimate d tha t abou t two-third s o f th e location s wil l b e describe d a s par t o f th e soi l mappin g project

. Mos t
o f thes e ar e expecte d t o b e i n the ol d portio n o f residentia l Leadville

. I t wil l b e the responsibilit y o f the soi l mapper s t o coordinat e wit h the soi l sampler s t o avoi d delayin g closur e o f th e holes

. Additiona l check s o n the accurac y and applicabilit y o f the mappin g and ma p unit s wil l b e provide d b y th e geostatistica l domai n analysis

. Accurat e an d appropriat e mappin g wil l resul t i n tw o effect s o n the domai n analysis

. The firs t wil l b e a reductio n i n the krigin g estimatio n erro r withi n th e domain

. Th e secon d wil l b e an improve d abilit y t o accuratel y predictivel y mode l concentration levels

. Thes e wil l becom e apparen t durin g th e iterativ e samplin g phas e a s th e predictiv e mode l i s checke d against th e sampl e results

. Descriptio n an d Samplin g o f Representativ e Soi l Profile s Accordin g t o th e procedure s o f th e Nationa l Cooperativ e Soi l Surve y (variou s source s includin g Soi l Taxonom y [USD A SC S 1975b ] an d Soi l Surve y Manua l [in progress])
, a representativ e profil e o f eac h soi l typ e identifie d on a soi l ma p shal l b e describe d b y a soi l scientist

. A sit e whic h i s judge d t o b e representativ e o f eac h soi l o r surficia l
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### Woodward-Clyd e Consultant s

material include d i n th e soi l ma p legen d wil l b e excavate d an d describe d t o a dept h o f 5 fee t or bedroc k (whicheve r i s shallower)

. I t i s estimate d that 1 5 soil/surficia l materia l 

### type s wil l be excavated

. Soil s fro m thes e profile s wil l be sample d fo r EDXR F analysi s an d describe d b y horizon

. I n addition , sample s wil l b e collecte d at depth s correspondin g t o th e residentia l soi l samplin g protocol s (0- 1 inches , 1- 2 inches , 2- 6 inches , 6-1 2 inches , an d 12-1 8 inches)

. Sample s wil l b e archive d an d analyze d fo r physica l an d chemica l characteristics , an d metals :
• pH • Electrica l conductivit y • Bul k densit y • Particl e siz e distributio n • Catio n exchang e capacit y (CEC ) • Saturatio n percentag e • Percentag e organi c carbo n • Percentag e lime • Acid-bas e potentia l (fo r sulfid e bearin g materials ) • Tota l As
, Cd
, Pb
, Z n Method s use d t o determin e thes e characteristic s ar e reference d i n Appendi x A
, Soi l Wor k Pla n SO P No

. 1

. Soil s wil l be classifie d accordin g t o Soi l Taxonom y (USD A SC S 1975b)

. Fiel d Revie w Th e SC S Stat e Soi l Correlato r wil l b e aske d t o conduc t an informa l revie w o f th e soi l
ma p and fina l report

. Fina l Soi l Inventor y Repor t A fina l soi l inventor y repor t wil l b e prepared

. I t wil l includ e detaile d soi l typ e description s an d ma p uni t descriptions , la b dat a an d physica l an d chemica l characteristics , profil e descriptions , an d a detaile d soi l map

.

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### Woodward-Clyd e Consultant s

2.3. 2 Surficia l Geologi c Ma p o f th e Stud y Are a I n additio n t o a soils/surficia l material s inventory, a surficia l geologi c ma p wil l b e produce d o f th e stud y area . Th e surficia l geology wil l provid e informatio n relativ e t o th e origi n an d genesi s o f naturall y occurrin g surficia l materials

. Objective s T h e objectiv e o f th e surficia l geologi c mappin g i s t o compil e existin g surficia l geologi c informatio n o f the stud y are a o n t o one ma p t o suppor t the domai n analysis

. Surficia l geologi c material s includ e floodplai n an d terrac e alluvium , glacia l outwash, till , an d bedrock

. Source s o f Informatio n Th e compilatio n wil l us e al l availabl e source s o f surficia l geologi c information

. Thos e source s include :
• Geolog y an d Or e Deposit s o f th e Wes t Slop e o f th e Mosquit o Range

. USG S Geologica l Surve y Professiona l Pape r 235 , C.H

. Behre
, 1953

. • Pleistocen e Geolog y o f th e Leadvill e Quadrangle
, Colorado ; Capps
, S.R

. Jr.
, USG S Bull

. 386 , 190 9 Stereographi c ai r photo s wil l als o b e use d t o delineat e landform s associate d wit h surficia l geologi c materials

. Th e aeria l photo s ar e a t a scal e o f 1:14400

. Fiel d Checkin g Th e compile d informatio n wil l b e presente d o n a ma p whic h i s a t th e scal e 1 in

. = 50 0 f t wit h 5-f t contours

. Existin g mappin g wil l b e fiel d checked b y a qualifie d quaternar y geologist

. Th e ma p wil l b e refine d base d o n surfac e observations , examinatio n o f roa d cuts , landfor m analysis , an d hand-du g observatio n points

.

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### Woodward-Clyd e Consultant s
Fina l Report Th e surficia l geologi c repor t wil l includ e a compile d surficia l geologi c ma p an d a descriptio n o f units

.

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### Woodward-Clyd e Consultant s
TABL E 2- 1 PRELIMINAR Y SOI L LEGEN D FO R TH E SOI L MA P O F LEADVILLE AN D STRINGTOW N Symbo l Nam e Le E Leadvill

e sand y loam , 3 t o 35 % slope s LeE n Leadvill e sand y loa m erode d phase , 3 t o 35 % slope s LeSlE Leadvill e sand y loa m wit h slag , 3 t o 35 % slope s LeE 2 Leadvill e sand y loa m unde r min e wast e < 50c m thick , 

### 3 t o 35 % slope s Pg D Pieria n gravell y sand y loam , 3 t o 9 % slope s PgD 2 Pieria n gravell y sand y loa m under tailing s <30c m thick , 3 t o 9 % slope s PI F Pieria n

soils , 2 0 t o 4 5 % slope s Po C Ponch a gravell y sand y loam , 1 t o 5 % slope s Tr E Troutvill

e gravell y sand y loam, 3 t o 35 % slope s Landtype s Bi d Building s C A Concret

e an d asphal t road s an d parkin g lot s G S Grave l

and san d road s and parkin g lot s Uw d Undifferentiate d

wast e ove r disturbe d soil s UwL e Undifferentiate d

wast e > 50c m ove r Leadvill e sand y loa m U w p Undifferentiate d

wast e pile s S i p Sla g pile s S m Smelte r

Waste s T i p Tailin g pile s TIP g Tailin g >30c m thic k ove r Pieria n gravell y sand y loa m

22443-22327/R15T.2- 1

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### Woodward-Clyd e Consultant s

3. 0 SAMPLIN G AN D ANALYSI S PLA N T h e Samplin g an d Analysi s Plan
, Ya k Tunne l Operabl e Unit
, Californi a Gulc h Site
, Leadville
, Colorado
, Revisio n 3. 0 wil l b e use d a s th e SA P fo r thi s wor k plan

. Modification s t o th e Ya k Tunne l SA P applicabl e t o thi s wor k pla n ar e presente d below

. T h e SA P i s compose d o f th e followin g parts :


### • Fiel d Samplin g Pla n • Qualit y Assuranc e Projec t Pla n • Standar d Operatin g Procedure s 3 . 1 FIEL D SAMPLIN G PLA N Thi s Fiel d Samplin g Pla n (FSP ) addresse s th e samplin g an d analysi s task s require d t o evaluat e th e natur e and exten t o f metals-contaminate d

soil s and remedia l alternative s f o r th e soil s i n th e Californi a Gulc h Sit e area . Th e FS P detail s th e propose d soi l sampl e locations , sampl e handlin g an d labelin g procedures , planne d chemica l analyses , documentatio n an d reporting , an d QA/Q C requirements

. 3.1. 1 Samplin g Objective s an d Sampl e Location s Th e objective s o f th e soi l samplin g Remedial Investigatio n progra m describe d i n thi s an d th e tw o associate d wor k plan s are t o (1 ) characteriz e th e natur e an d extent o f soi l contaminatio n i n populate d an d non-populate d areas , (2 ) evaluat e th e dept h o f contaminatio n i n th e soi l t o 1 8 inches , (3 ) evaluat e i n sufficien t detail th e horizonta l exten t o f surfac e contaminatio n i n populate d areas , (4 ) prioritiz e area s fo r remedia l action, (5 ) characteriz e th e chemica l an d physica l soi l characteristics , concentrations , volumes , sources , and speciatio n t o evaluat e remedia l alternatives , and (6 ) evaluat e the natur e an d exten t o f soi l contaminatio n i n non-populate d area s t o evaluat e environmenta l risk

. Fo r th e purpose s o f thi s wor k plan , soi l sample s wil l b e collecte d unde r th e soi l inventor y tas k describe d i n subsectio n 2.3. 1 t o characteriz e th e physical , chemica l an d meta l characteristic s o f th e samples

. 22443-22327/R15. 3

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### Woodward-Clyd e Consultant s

3.1. 2 Soi l Mappin g an d Profil e Descriptio n Procedure s fo r Soi l Mappin g an d Profil e Description
, includin g soi l classificatio n an d soi l profil e samplin g procedures , wer e prepare d an d ca n b e foun d i n Soi l Wor k Pla n SO P No

. 1 o f Appendi x A o f thi s Wor k Plan

. 3.1. 3 Sampl e Handling an d Documentatio n Procedure s fo r sampl e handlin g an d documentatio n ar e presente d i n th e SA P fo r th e Ya k Tunne l Operabl e Uni t i n SO P No

. 1 0 - Sampl e Handling
, Documentation
,

an d Analysis

. 3.1. 4 Decontaminatio n Procedures fo r decontaminatio n o f samplin g equipmen t an d personne l ar e contained i n th e SA P fo r th e Ya k Tunne l Operabl e Uni t i n SO P No

. 1 - Decontamination

. 3.1. 5 Sampl e Preparatio n Al l soi l sample s wil l b e delivere d t o th e projec t laborator y on th e da y o f collection

. Sample s wil l be logge d int o th e databas e an d prepare d fo r analysis

. Th e sampl e preparatio n procedure s include : homogenizatio n

o f th e soi l i n th e sampl e jar , collectio n o f a subsampl e o f a suitabl e size , dryin g o f the sampl e i n a laborator y oven , sievin g o f th e drie d sampl e t o remov e th e larg e debri s an d grindin g o f th e les s tha n 2 m m fractio n o f th e sampl e t o approximatel y 50 /* m for th e analysis

. 3.1. 6 Detectio n Limit s Th e detectio n limit s o f th e fou r (4 ) targe t analyte s i n soil s require d fo r th e XR F analyse s ar e liste d i n Tabl e 3-1

. Thes e value s hav e bee n arrive d a t fro m th e intende d use s o f th e 

### dat a fo r th e evaluatio n o f ris k an d th e identificatio n o f area s fo r remediatio n activities

.

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### Woodward-Clyd e Consultant s
Thes e detectio n limit s ar e attainabl e usin g th e specifie d methodology an d wil l als o b e use d fo r th e reportin g limit s o f th e laborator y performin g th e analysi s o f th e soi l samples

. TABL

E 3-1 : PROJEC T REQUIRE D DETECTIO N LIMIT S 

### Analyt e Arseni c Cadmiu m 

### Lea d Zin c Detectio n Limi t mg/k g 2 5 2 5 20 0 10 0
3 . 2 QUALIT Y ASSURANC E PROJEC T PLA N (QAPP ) Th e Qualit y Assuranc e Projec t Plan
, Revisio n 3.0 , Marc h 18,1991 , Ya k Tunne l Operabl e Unit
, Californi a Gulc h Site
, Leadville
, Colorado
, wil l b e utilize d as th e QAP P fo r thi s wor k plan , wit h th e modification s presente d i n th e subsections below

. 

### Th e purpos e o f Qualit y Assuranc e Projec t Pla n i s t o documen t th e qualit y assurance requirement s applicabl e t o activitie s performe d a s part o f the Soi l Investigatio n Wor k Plan

. Thi s pla n describes th e requirement s o f th e QA progra m fo r organizing , planning , performing , reviewing , and documentin g activitie s whic h affec t the qualit y o f wor k relate d t o th e Soi l Investigatio n Work Plan

. Th e scop e o f thi s Qualit y Assuranc e progra m include s al l activitie s performe d b y Res-ASARC O afte r th e dat e o f EP A approva l o f th e Soil Investigatio n Work Plan
, a s authorize d b y Res-ASARCO

. I t applie s t o al l work , whethe r performe d a t th e Californi a 

### Gulc h sit e an d vicinity , o r i n an y offic e o r laboratory

.

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3

### Woodward-Clyd e Consultant s

3.2. 1 Projec t Organizatio n Th e organization , responsibilities , an d qualification s o f ke y ASARC O personne l


### concerne d wit h qualit y assuranc e fo r the Soi l Wor k Pla n ar e specifie d i n Subsection s 3.2 , 3.3 , an d 3. 4 o f th e Qualit y Assuranc e Projec t Plan
, Revision No

. 3.0 , Marc h 18 , 1991 , Y a k Tunne l Operabl e Unit
, Californi a Gulch Site
, Leadville
, Colorad o (Ya k Tunne l QAPP)

. 3.2. 2 Laborator y Qualit y Assurance/Qualit

y Contro l A n on-site , fixed-bas e laborator y wil l b e utilize d t o analyz e th e soi l sample s collecte d durin g thi s phas e o f th e investigation

. Th e laborator y wil l b e equippe d wit h a n energ y dispersiv e X-ra y fluorescenc e spectromete r (EDXRF ) capabl e o f providin g th e qualit y o f data , detectio n limits , an d tur n aroun d time s required fo r th e project

. Thi s qualit y o f dat a wil l b e ensure d b y includin g a stron g qualit y assurance progra m t o the analytica l procedures

. The leve l o f qualit y contro l introduce d int o the laborator y procedure s i s equa l t o o r greate r tha n tha t required i n th e Contrac t Laborator y Statemen t o f Wor k fo r th e type s o f qualit y contro l sample s that ar e appropriate

. Thes e qualit y contro l procedure s includ e th e us e o f standar d referenc e materials , duplicat e sampl e preparation s an d analyses , decontaminatio n an d equipmen t blanks , dail y instrumen t calibratio n verificatio n an d procedure s fo r auditin g laborator y operation s fo r continue d adherenc e t o th e establishe d qualit y contro l program

. 3.2. 3 Qualit y Assuranc e Objective s and Qualit y Contro l Dat a qualit y objective s pertainin g t o accuracy , precision , completeness , comparability , an d representativenes s

an d qualit y control check s ar e specifie d i n Subsectio n 2. 1 o f thi s Wor k Pla n an d Sectio n 6 o f th e SA P o f th e Ya k Tunne l Operabl e Uni t QAPP

. Soi l Samplin g Fiel d QA/Q C sample s require d fo r thi s soi l samplin g effor t wil l thos e reference d i n th e SA P o f th e Ya k Tunne l Operabl e Uni t QAPP

.

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### Woodward-Clyd e Consultant s

3.2. 4 Dat a Validatio n Validatio n o f th e analytica l dat a generate d fro m sample s collecte d a s part o f th e Soi l Investigatio n Wor k Pla n wil l b e a s describe d i n the Ya k Tunne l QAP P wit h the 

### followin g changes :


### • Th e dat a validatio n proces s tha t wil l b e use d fo r non-CL P metal s analyses wil l b e base d on EP A Laborator y Dat a Validatio n Functiona l Guideline s f o r Evaluatin g Inorgani c Analyse s (EP A 1988 ) modifie d fo r SW-84 6 methods

. Th e dat a validatio n form s include d a s Attachmen t A i n th e Ya k Tunne l QAP P wil l not b e use d fo r validatin g dat a generate d a s part o f the Soi l Wor k Plan

. 3.2. 5 Audits
, Nonconformances
,

an d Correctiv e Action s Syste m audit s and correctiv e action s fo r nonconformanc e wil l b e a s specifie d i n Subsection s 10. 1 an d 10. 2 o f th e Ya k Tunne l QAPP

. Th e schedul e o f audit s t o b e performe d wil l b e a s specifie d i n Tabl e 10- 1 o f the Ya k Tunne l QAPP

. 3.2. 6 Qualit y Assuranc e Report s Qualit y assuranc e report s t o managemen t wil l b e a s specifie d i n Sectio n 11. 0 o f th e Ya k Tunne l QAPP

.

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### Woodward-Clyd e Consultant s

4. 0 SCHEDUL E A tentativ e schedul e fo r the activities include d i n the soi l investigatio n describe d i n thi s wor k pla n i s show n i n Figur e 4-1

. Thi s schedul e ma y b e subjec t t o change du e t o factor s whic h ma y influenc e th e abilit y t o begi n and/o r complet e th e specifi c task s identifie d i n thi s document

. Thes e factor s ma y include , but ar e not limite d to , acces s t o privat e lands , inclemen t weather , an d regulator y revie w an d approval

.

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### Figur e 4- 1 

### SOIL S SCHEDUL E ACTIVIT Y DRAF T WOR K PLA N FINA L DRAF T WOR K PLA N FINAL WOR K PLA N TECHNICA L ADVISOR Y COMMITTE E ACCESS/QUESTIONAIR E SOILS/SURFICA L MATERIAL S INVENTOR Y SURFICIA L GEOLOG Y MAPPIN G DOMAI N ANALYSIS / MAPPING JUN E

*

*

* AREA J JUL Y

•

> INITIALL Y T O
HISTORICA L AERIA L AUGUS T

B E SAMPLE D MAPPIN G COMPILATION / REVIE W I M A

•• M 199 1 SEPTEMBE R

PPIN G ••• » OCTOBE

R

G DRAF T MA P FIEL D CHEC K NOVEMBE R

OTHER AREA S DECEMBE R 199 2 JANUAR Y

### Woodward-Clyd e Consultant s

5. 0 REFERENCE S Res-ASARCO

. 1991a

. RI/F S Scopin g Document
, Californi a Gulch Site
, Leadville
, 

### Colorado

. Prepare d b y Woodward-Clyde

. Res-ASARCO

. 1990a

. Samplin g an d Analytica l Plan

. Ya k Tunne l Operabl e Unit
, Qualit y Assuranc e Projec t Plan

. Rev

. 3.0

. Prepare d b y Woodward-Clyde

. Marc h 18 , 1991

. Res-ASARCO

. 1990b

. Samplin g an d Analysi s Plan
, Ya k Tunne l Operabl e Unit
, Fiel d Samplin g Plan

. Prepare d b y Woodward-Clyde

. April
, 1990

. Res-ASARCO

. 1990c

. Residentia l Soil s Investigation

. Prepare d b y Wals h an d Associates

. U.S

. Departmen t o f Agricultur e (USDA ) Soi l Conservatio n Servic e (SCS)

. 1975a

. Soi l Surve y o f Chaffee-Lak e Area
, Colorado
, and Part s o f Chaffe e and Lak e Counties

. U.S

. Departmen t o f Agricultur e (USDA ) Soi l Conservatio n Servic e (SCS)

. 1975b

. Soi l Taxonomy : A Basi c Syste m o f Soi l Classificatio n fo r Makin g an d Interpretin g Soi l Surveys

. Agricultura l Handboo k 436

. U.S

. Governmen t Printin g Office

. Washingto n D.C

. U.S

. Environmenta l Protectio n Agenc y (EPA)

. 1990

. Da y Car e Soil Study

. Prepare d b y Ro y F

. Weston
, Inc

. U.S

. Environmenta l Protectio n Agenc y (EPA)

. 1989

. Guidanc e fo r Conductin g Remedia l Investigation s an d Feasibilit y Studie s Unde r CERCLA

. EPA/540/6-89/004

. U.S

. Environmenta l Protectio n Agenc y (EPA)

. 1987

. Dat a Qualit y Objectiv e fo r Remedial Respons e Activities
, Develope d Process

. EPA/540/6-87/003

.

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07-19-91/RPT/ 6 5- 1APPENDI X A STANDAR D OPERATIN G PROCEDURE S

22443-22327/R15.T S 07-19-91/RPT/ 6APPENDI X A STANDAR D OPERATIN G PROCEDURE S This part o f th e Samplin g an d Analysi s Pla n (SAP ) contain s th e followin g Standar d Operatin g Procedure s (SOPs ) fo r th e fiel d monitorin g an d samplin g task s describe d i n t h e Fiel d Samplin g Pla n (FSP ) fo r thi s Soil s Wor k Plan

. SO P Numbe r 1 * Decontaminatio n Soil s Wor k Pla n 1 Soi l Mappin g an d Profil e Descriptio n 10 * Samplin

g Handling
, Documentation
,

an d Analysi s
* SO P containe d i n th e SA P fo r Ya k Tunne l Operabl e Unit
, Californi a Gulc h Site
, Leadville
, Colorad o (Res-ASARC O 1990)

.

22443-22327/R15. A

07-19-91/RPT/ 6 A- l1. 0 TITL E PAG E SOIL S WORKPLA N STANDAR D OPERATIN G PROCEDUR E NO

. 1 SOI L MAPPIN G AN D PROFIL E DESCRIPTION Californi a Gulch Sit e Leadville
, Lak e County
, C O Projec t Numbe r 22443-2232 7 Approvals : Dat e Originato r
Pee r Reviewe r
QA/Q C Office r Projec t Manage r EP A Approva l SOP# l Revisio n No

. 0. 0 22443-22327/R15-SOP. 1

07-19-91/RPT/ 7 Soi l Mappin g an d Profil e Descriptio n Date :

07-02-91 Pag e 1 o f 1 22. 0 TABL E O F CONTENT S Sectio n Pag e 1. 0 TITL E PAG E 1 2. 0 TABL E O F CONTENT S 2 3. 0 PURPOS E AN D SCOP E 3 4 . 0 RESPONSIBILITIE

S AN D QUALIFICATION

S 4 5 . 0 PROCEDURE

S FO R SOI L MAPPIN G AN D PROFIL E DESCRIPTIO

N 5 5 . 1 FIEL D MAPPIN G 5 5 . 2 PROFIL E DESCRIPTIO

N AN D SOI L CLASSIFICATIO

N 6 5. 3 SOI L PROFIL E SAMPLIN G PROCEDURE S 7 6. 0 LABORATOR Y

PROCEDURE S FO R PEDO N SOI L SAMPLE S 9 7. 0 REFERENCE

S 1 1 LIS T O F TABLE S TABL E 6- 1

. PEDO N SOI L SAMPL E LA B METHOD S 1 0 LIS T O F FIGURE S FIGUR E 6- 1 SOI L PROFILE DESCRIPTIO

N 8

SO P # 1 Soi l

Mappin g and Profil e Descriptio n Date :

07-02-9 1 Revisio n No

. 0. 0 Page 2 o f 1 2 22443-22327/R15-SOP. 1

07-19-91/RPT/

73. 0 PURPOS E AN D SCOP E Th e purpos e o f thi s documen t i s t o defin e th e Standar d Operatin g Procedur e (SOP ) fo r soi l mappin g an d profil e description

. Thi s SO P applie s t o an y wor k performe d b y ASARC O personne l or an y subcontracto r selecte d t o perfor m an y portio n o f th e soil s mappin g o r profil e descriptions

. Thes e procedure s wil l b e routinel y followed

. An y modification s t o thi s SO P shal l b e approve d b y th e Projec t Manage r o r Tas k Leader
, an d th e Qualit y Assurance/Qualit

y Contro l (QA/QC ) Officer

.

SO P # 1 Soi

l Mappin g an d Profil e Descriptio n Date :

07-02-9 1 Revision No

. 0. 0 Page 3 o f 1 2 22443-22327/R15-SOP. 1

07-19-91/RPT/ 74. 0 RESPONSIBILITIE S

AN D QUALIFICATION

S Th e Projec t Manage r o r Task Leade r i s responsibl e fo r assignin g projec t staf f t o perfor m soi l mappin g activities

. Th e Tas k Leade r i s als o responsibl e fo r assurin g tha t thes e an d
an y othe r appropriat e procedure s ar e followe d b y al l projec t personnel

. T h e projec t staf f assigne d t o perfor m soi l mappin g activities ar e responsibl e fo r completin g thei r task s accordin g t o thes e an d othe r appropriat e procedures

. Al l staf f ar e responsibl e fo r reportin g deviation s o r nonconformanc e o f th e procedur e t o th e Tas k Leade r o r Projec t Manger
, an d QA/Q C Officer

. Onl y qualifie d personne l shal l b e allowe d t o perfor m soi l mappin g activities

. Qualification s ar e based o n education , previou s experience , o r on-the-jo b trainin g an d supervisio n b y anothe r qualifie d person

. Oversigh t an d supervisio n o f th e soi l mappin g activitie s wil l b e conducte d b y a Certifie d Professiona l Soil Scientist

. Projec t staf f performin g th e survey s wil l b e trained soi l scientist s o r trained personnel wit h significan t mappin g backgroun d an d experienc e approve d b y th e senior soi l scientist

. Al l staf f involve d wit h th e soi l mappin g activitie s shal l hav e previou s experienc e wit h soi l mapping , sampl e collection , an d sampl e handlin g procedures

. Th e Projec t Manage r shal l document personne l qualification s relate d t o thi s procedur e i n th e projec t Q A files

.

SO P # 1 Soi l

Mappin g an d Profil e Descriptio n Date :

07-02-91 Revision No

. 0. 0 Pag e 4 o f 1 2 22443-22327/R15-SOP. 1

07-19-91/RPT/ 75. 0

PROCEDURE S FO R SOI L MAPPIN G AN D PROFIL E DESCRIPTIO N

5 . 1 FIEL D MAPPIN G A preliminar y soi l ma p o f th e stud y are a wil l b e produce d fro m existin g Soi l Conservatio n Servic e (SCS ) soi l map s o f th e area , stereographi c colo r aeria l photos , an d fiel d note s fro m th e 1987 Wals h an d Associate s soi l sampling

. Th e soi l inventor y i n populate d area s wil l approximat e a detaile d orde r I I survey
. Th e nonpopulate d area s wil l b e mappe d a t abou t a n orde r II I survey
. 

### Fro m existin g soil s informatio n an d fiel d observations , th e inventor y tea m leade r wil l develo p soi l ma p unit s an d establis h a ma p legen d o f natura l soil s an d lan d type s compose d primaril y o f surficia l wast e materials

. Th e ma p unit s t o b e use d wil l b e develope d specificall y t o suppor t the desire d interpretation s and use s o f the soi l survey
. Soi l mappin g i n the fiel d wil l follo w the procedures and nomenclatur e outline d i n the Soi l Surve y Manua l (Soi l Surve y Staf f 1981)

. Soi l mappin g wil l involve examinin g hundred s o f soi l cores , hand-du g pits , and som e backho e pit s fro m al l section s o f the stud y area . Hand-du g pit s wil l b e excavated wit h a til e spad e an d han d augers, an d core s wil l b e obtaine d wit h th e us e o f a Gidding s auger . A n estimate d 40 0 visua l observation s wil l b e mad e i n incorporate d Leadvill e an d Stringtow n (abou t 160 0 acres)
, resultin g i n abou t on e observatio n per 4 acres
. Officia l SC S soi l serie s description s wil l b e consulte d t o classif y the soil s t o the serie s leve l wher e practical

. Thos e soil s tha t hav e propertie s outsid e th e limit s o f locall y recognize d soi l serie s wil l b e classifie d t o th e phas e o f famil y level

. Th e minimu m siz e delineatio n i n populate d area s wil l b e abou t 0.2 5 acres
. For the nonpopulate d areas , the locations o f soi l observation s wil l b e selecte d t o represen t th e rang e o f possibl e geomorphi c position s occurrin g i n a geographicall y limite d area . This metho d i s o f a standar d soi l surve y procedure

. I n area s wit h n o perceptibl e landscap e change, observation s wil l b e mad e a t arbitrar y distanc e intervals

. SO P # 1 Soil

Mappin g an d Profil e Descriptio n Date :

07-02-91 Revision No

. 0. 0 Pag e 5 o f 1 2 22443-22327/R15-SOP. 1

07-19-91/RPT/ 7Th e

numbe r o f observation s wil l depen d upo n th e complexit y o f th e soi l pattern

. Th e minimu m siz e delineatio n fo r nonpopulate d area s wil l b e 1. 5 acres
. Equipmen t and source s use d fo r soi l mappin g includ e the following :


### • Til e spad e an d han d auger s • Gidding s auge r wit h samplin g cor e • Han d len s • 0.2NHC 1 • SC S soi l descriptio n sheet s • Munsel l color boo k • Tap e measur e • Genera l soi l ma p 

### • Aeria l photo s • Soi l handboo k • Soi l Surve y Manua l
5 . 2 PROFIL E DESCRIPTIO N

AN D SOI L CLASSIFICATIO N A representativ e soi l profil e o f eac h soi l typ e use d i n th e inventor y wil l b e describe d an d sample d t o a dept h o f 5 fee t or t o bedrock , whicheve r i s shallower , fro m backho e pits

. Th e soil s wil l b e described , identified , an d characterize d usin g tri e procedure s an d nomenclatur e outline d i n th e Soi l Surve y Manua l (Soi l Surve y Staf f 1981)

. Th e vegetation , curren t use , parent material , physiography , relief , elevation , slope , an d aspec t wil l b e describe d a t eac h typica l pedo n site

. Estimate s wil l b e mad e o f th e hydrologi c characteristic s o f th e soi l fo r wate r erosio n class , wate r retentio n difference , drainage , dept h t o groundwater , moisture , an d hydrauli c conductivity

. The presenc e o f sal t or alkal i wil l b e noted

. For eac h horizo n o f th e pedon , th e depth , color , texture , structure , consistence , roots , cla y films , roc k fragments , mottles , an d boundarie s wil l b e described

. Thes e description s wil l be note d o n th e standar d SC S soi l profil e descriptio n sheets

. A n exampl e o f th e soi l profil e descriptio n shee t i s presente d i n Figur e 6-1

. SO P # 1 Soi l

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07-19-91/RPT/ 7Th e

soil s wil l b e classifie d i n th e fiel d t o th e famil y leve l usin g Soi l Taxonom y (Soi l Surve y Staf f 1975)

. Officia l SC S soi l serie s description s wil l b e consulte d t o classif y th e soil s t o th e serie s leve l wher e practical

. 5 . 3 SOI L PROFIL E SAMPLIN G PROCEDURE S Profile s wil l b e sample d b y horizon

. I n addition , sample s wil l b e collecte d at depth s o f 0 t o 1 inch , 1 t o 2 inches , 2 t o 6 inches, 6 t o 1 2 niches , an d 1 2 t o 1 8 inches

. Thes e soi l sample s wil l b e split ; on e spli t wil l b e archive d an d th e othe r wil l b e analyze d t o suppor t the fiel d evaluations , determin e tota l meta l concentrations , an d t o provid e additiona l informatio n abou t the soils

. Soi l sample s collecte d a t dept h interval s fro m soi l profile s shal l be sample d i n th e followin g manner : 1

. Collec t sample s fro m botto m t o to p o f th e backho e pi t t o preven t cross


### contaminatio n fro m soi l materia l fallin g fro m above

. Th e pedo n fac e t o b e sample d wil l b e brushed fro m to p t o botto m wit h a nylo n brus h t o remov e an y loos e particles

. Th e lowes t sampl e (1 2 t o 1 8 inches ) wil l b e collecte d first , usin g a decontaminate d stainles s stee l scoo p o r trowel

. 2

. Plac e th e collecte d materia l int o a decontaminate d stainles s steel mixin g bow l an d mi x for severa l minutes

. 3

. Remov e material othe r tha n soil , suc h a s littl e an d roo t matter

. Shak e soi l material fro m the root s an d othe r material

. 4

. Mi x agai n fo r severa l minute s t o ensur e complet e homogenization

. 5

. Usin g a decontaminate d stainles s steel scoop , divid e the sampl e int o tw o clean wide-mouth , 16-ounc e samplin g jars , on e fo r analysi s an d on e fo r archiv e purposes

. Sample s tha t wil l no t fi t i n wide-mout h jar s wil l b e place d i n sampl e bags

. SO P # 1 Soil

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### 6

.

Afte r th e sampl e ha s bee n collected , sampl e handlin g an d documentatio n wil l compl y wit h SO P No

. 1 0 o f th e Ya k Tunne l Operabl e Unit
, Californi a Gulc h Site
, Leadville
, Colorad o Samplin g an d Analysi s Pla n (Res-ASARC O 1990)

.

SOP# 1 Soi

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07-19-9 1 /RPT/ 7FIGUR E

A- l SOI L PROFIL E DESCRIPTIO N

SO P # 1 Soil

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07-19-91/RPT/ 76. 0 LABORATOR Y PROCEDURE S FO R PEDO N SOI L SAMPLES Laborator y analyse s wil l b e performe d t o asses s th e physica l an d chemica l propertie s o f th e soil

. Thes e propertie s include :
• pH • Electrica l Conductivit y (E.G. ) • Bul k densit y • Percent lime • Particl e siz e distributio n (percentag e o f gravel , sand , ver y fin e sand , silt , clay ) • Saturatio n percen t • Percent organi c carbo n • Acid-bas e potentia l • Tota l As
, Cd
, Pb
, and Z n Tabl e 6- 1 present s th e appropriat e laborator y method s t o b e employe d fo r th e above

liste d parameters

.

SO P # 1 Soi l

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07-19-91/RPT/ 7TABL E 6- 1 PEDO N SOI L SAMPLE LA B METHOD S Paramete r Sourc e Saturate d Past e p H Electrica l Conductivit y (E.G. ) Percent Lim e (Calciu m Carbonat e Equivalen t Percent ) Bul k Densit y Particl e Siz e Analysi s Saturatio n Percen t Percent Organi c Carbon Aci d Bas e Potentia l Catio n Exchang e Capacit y (CEC ) Antimon y Arseni c Bariu m Berylliu m Boro n Cadmiu m Chromiu m Coppe r Lea d Manganes e Mercur y Nicke l Silve r Thalliu m Zin c AS A # 9-2 , sectio n 12-2. 6 AS A # 9-2 , sectio n 10-3. 3 

### USD A Handboo k # 60 , Metho d 6-23 c AS A # 9-1 , sectio n 13- 4 DA2 2 

### USD A Handboo k #60 , Metho d 27 a AS A # 9-2 , sectio n 29.3.5. 2 Sobe k e t al , 197 8 AS A #9-2 , Sectio n 8- 3 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 SW-84 6 AS A # 9- 1 (Blac k e t a l 1965)

. AS A # 9- 2 (Pag e e t a l 1982)

. USD A Handboo k # 6 0 (Salinit y Laborator y Staf f 1954)

. SW-84 6 (EP A 1986 )
SOP# l Revisio n No

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07-19-91/RPT/ 7 Soi l Mappin g an d Profil e Descriptio n Date :

07-02-9 1 Pag e 1 1 o f 1 27. 0 REFERENCES Black
, C.A

. et al

. (ed.)

. 1965

. Method s o f Soi l Analysis

. Par t I

. Agronom y 9

. Am

. Soc

. o f Agron.
, Madison
, WI

. Page
, A.L

. e t al

. (ed.)

. 1982

. Method s o f Soil Analysis

. Par t 2

. Secon d Edition

. Agronom y 9

. Am

. Soc

. o f Agron.
, Madison,
, WI

. Salinit y Laborator y Staff

. 1954

. Diagnosi s an d Improvemen t o f Salin e an d Alkal i Soils

. USD A Agric

. Handb

. 60

. U.S

. Governmen t Printin g Office
, Washington
, DC

. Sobek
, A.A

. e t al

. Marc h 1978

. Fiel d an d Laborator y Method s Applicabl e t o Overburde n an d Min e Soil

. U.S

. EP A - 600/2/78-05A

. Soi l Surve y Staff

. 1975

. Soi l Taxonomy
, A Basi c Syste m o f Soi l Classificatio n fo r Makin g a n d Interpretin g Soi l Surveys

. USDA-SC S Agric

. Handb

. 436

. U.S

. Governmen t Printin g Office
, Washington
, D.C

. Soi l Surve y Staff

. 1981

. Soi l Surve y Manual

. USDA-SC S Agric

. Handb

. 18

. U.S

. Governmen t Printin g Office
, Washington
, D.C

. (Revise d 195 1 edition)

. U

. S

. Environmenta l Protectio n Agenc y (EPA)

. 1986

. Tes t Method s fo r Evaluatin g Soli d Waste
, Physical/Chemica l

Methods
, SW-846
, Thir d Edition

.

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