i

» UNITE D

STATE S ENVIRONMENTA L

PROTECTIO N AGENC Y REGIO N VI M
9 9 9 18t h STREE T

- SUIT E 50 0 DENVER

, COLORAD O 80202-246 6 53473

8

Ref : EPR-S R FINA

L POLLUTIO N REPOR T CALIFORNI A GULCH

, OPERABL E UNI T I X REMOVA L ACTION S PERFORME D UNDE R TH E KID S FIRS T PROGRA M

I

. HEADIN G

Date : Decembe r 15,199 8 Subject : Californi a Gulc h Superfun d Site

, Operabl e Uni t IX

, Residentia l Soil s Twent y (20 ) Time-Critica l Removal s Performe d Unde r th e Kid s Firs t Progra m Durin g th e Tim e Perio d Startin g October 31,199 7 thr u Novembers

, 1998

. From : Rebecc a Thomas

, Remedia l Projec t Manage r T o : Max H

. Dodso n Assistan t Regiona l Administrato r Offic e o f Ecosystem s Protectio n an d Remediatio n POLREP No. : POLREP 1 an d FINA L I I

. BACKGROUN D N P L Status : FINA L Sit e No

. COD98071793 8 Actio n Memorandu m Status : Approva l

date s fo r Actio n Memorandums

, Star t Date s an d Completio n Date s ar e indicate d belo w fo r eac h propert y i n description s o f eac h respons e action

.

Printed on Recycled PaperI l l SIT E INFORMATIO N T h e Californi a Gulc h Sit e (Site ) wa s liste d o n th e Nationa l Prioritie s Lis t o n Septembe r 8

, 1983

. Th e sit e i s i n a histori c minin g are a coverin g 1 6 % 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 i n 1859

, th e are a was mine d extensivel y fo r gold

, lead

, silver

, copper

, zinc

, a n d manganese

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

, Colorado

. Man y smelters

, whic h wer e locate d aroun d th e City

, processe d silver

, lea d an d zin c a t variou s times

. Heav y meta l residue s ar e present i n muc h o f th e Site

. Approximatel y 7,40 0 peopl e liv e i n Leadvill e an d Lak e County

. A s a resul t o f th e Augus t 199 4 Consen t Decre e between th e Unite d State s and variou s potentiall y responsibl e parties

, Asarco

, Inc

. ha s assumed th e responsibilit y t o addres s th e Residentia l Soil s Operabl e Uni t I X (O U IX)

. Th e Consen t Decre e call s fo r th e formatio n o f th e Kid s Firs t Progra m (KFP)

. T h e Kid s Firs t Progra m i s designe d t o reduc e youn g children' s exposur e t o lead

. T h e Progra m als o provide s informatio n t o th e communit y abou t lea d foun d withi n th e hom e an d environment

. T h e Kid s Firs t Progra m was develope d b y th e Stat e o f Colorado

, EP A an d Asarc o wit h inpu t fro m th e Cit y o f Leadvill e an d Lak e County

. Th e Cit y o f Leadvill e an d Lak e County

, Stat e o f Colorado

, EP A an d Asarc o wor k togethe r o n Kid s Firs t a s th e Kid s Firs t Wor k Group

. Thi s progra m i s bein g implemente d a s outline d in th e Consen t Decre e wit h guidanc e fro m th e Kid s Firs t Wor k Group

. Thi s progra m i s a n interi m progra m unti l a Recor d o f Decisio n i s establishe d fo r th e residentia l area

. T h e Kid s Firs t Progra m i s a voluntar y progra m consistin g of :

* Providin g a n educationa l progra m t o th e Leadvill e communit y abou t stayin g saf e aroun d lead

, * establishin g a loa n progra m o f HEP A (Hig h Efficienc y Particulat e Aerosol )

vacuum s t o reduce lea d dus t insid e homes

, * conductin g environmental assessment s o f soils

, dust

, pain t an d wate r t o determin e thos e eligibl e fo r a respons e action

,

Printed

on Recycled Paper*

recommendin g appropriat e respons e action s t o ER A fo r approva l an d implementatio n b y Asarco

, and

* continuin g th e on-goin g bloo d lea d monitorin g throug h Lak e Count y Nursin g Services

. I V

. RESPONS E INFORMATIO N T h e Tim e Critica l Remova l Action s liste d belo w wer e performe d unde r th e Kid s Firs t program

. Exhibits/Figure s ar e provide d i n eac h Actio n Memorandu m t o depic t th e
area s t o b e remediated

. Operabl e Uni t 9

, KF P Remova l 2 1 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Trujill o residenc e locate d a t 71 2 Eas t 6t h Street

, Leadville

, Colorado

, wa s signe d o n Decembe r 1

, 1997

. Soil s i n th e fron t yar d o f th e Trujill o propert y exceede d th e KF P Trigge r leve l

o f 3,500 pp m lead

. Th e actio n consiste d o f remova l o f soi l t o facilitat e gradin g an d drainag e requirement s an d installatio n o f a 6 inc h cove r ove r th e entir e property

. Cover material s consiste d o f topsoil

, sod

, gravel

, concrete

, roa d base

. I n additio n a n asphal t drainag e swal e wa s grade d alon g th e sout h propert y lin e (alon g Eas t 6t h Street ) t o minimiz e surfac e wate r run-o n fro m up-gradien t o f th e property

. The structur e locate d a t the Trujill o residence

, ha s bee n determine d t o b e non

contributin g t o th e Leadvill e Histori c Minin g Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. However

, archaeologica l potentia l ha s bee n identifie d a t thi s property

. A cultura l resourc e professiona l monitore d excavatio n
o f soil s a t thi s property

. The Remova l Actio n a t the Trujill o residenc e wa s complete d b y Octobe r 23,1998

. ACTIO N MEMORANDU M SIGNED : DECEMBE

R 1,199 7 REMOVA L START : DECEMBE

R 1,199 7 REMOVA L COMPLETE : OCTOBE

R 23,199 8

Printed en Recycled PaperOperabl

e Unit 9

, KF P Remova l 2 2 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Vierczhalc k residenc e locate d a t 32 2 Wes t 3r d Street

, Leadville

, Colorado

, wa s signe d o n Decembe r 1

, 1997

. Soil s i n th e bed s adjacen t t o th e hous e exceede d th e KF P trigge r leve l o f 3,500 pp m lead

. The actio n consiste d o f remova l o f materia l t o a dept h o f 6 inche s i n th e fou r sla g covere d flowe r bed s followe d b y installatio n o f 6 inche s o f river-washe d grave l i n tw o o f the bed s adjacen t t o the wes t sid e o f the house

. Si x inche s o f to p soi l wa s installe d i n th e thir d bed adjacen t t o th e hous e an d i n th e bed adjacen t t o th e sout h sid e o f th e shed

. Th e structur e locate d a t th e Vierczhalck residenc e ha s bee n determine d t o b e non

contributin g t o th e Leadvill e Histori c Minin g Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. The Remova l Actio n at th e Vierczhalc k residenc e wa s complete d b y Jun e 11, 1998

. ACTIO N MEMORANDU M SIGNED : DECEMBE

R 1,199 7 REMOVA L START : JUN

E 8,199 8 REMOVA L COMPLETE : JUN

E 11,199 8
Operabl e Uni t 9

, Kid s Firs t Progra m (KFP ) Remova l 2 3 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Gonzale s residenc e (81 5 Eas t 6 t h Street ) wa s signe d o n Jun e 8,1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s i n sample s collecte d fro m soil s i n severa l area s o f th e Gonzale s property

, locate d at 81 5 Eas t 6 t h Street

, Leadville

, Colorado

, exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. T h e actio n consiste d o f installatio n o f cove r material s includin g to p soil

, sod

, clea n backfill

, cobbles

, roadbas e an d concrete

. A concret e pa d an d roa d bas e wa s installe d fro m the existin g concret e pa d i n fron t o f the garag e t o Eas t 6 t h Street

. A minimu m o f si x inche s o f materia l wa s remove d fro m th e are a wher e th e roa d bas e
wa s installed

. To p soi l wa s remove d t o a dept h o f si x inche s fro m th e are a locate d alon g the eas t sid e o f the propert y and wa s replace d wit h roa d base

. To p soi l wa s installe d i n th e fron t yar d fro m th e hous e t o th e nort h fenc e line

. Clea n fil l materia l

Printed on Recycled Paperan d

larg e cobble s wer e installe d fro m th e fenc e lin e t o Eas t 6 t h Street

. Si x inche s
o f materia l wa s remove d fro m th e tw o flowe r bed s (on e on th e eas t sid e o f th e hous e an d on e on th e nort h side)

. Th e are a wa s backfille d wit h to p soil

. T h e Stat e Histori c Preservatio n Offic e (SHPO ) ha s determine d tha t th e structur e
o n th e Gonzale s propert y i s non-contributin g t o th e Leadvill e Histori c Minin g District

. Sinc e archaeologica l potentia l wa s identifie d at th e property

, a cultura l

resourc e professio n monitore d excavatio n o f soil s a t this property

. Th e Remova l Actio n a t th e Gonzale s residenc e (81 5 Eas t 6 t h Street ) wa s complete d b y Jul y 7,1998

. ACTIO N MEMORANDU M SIGNED : JUN E 8,199 8 REMOVA L START : JUN

E 8,199 8 REMOVA L COMPLETE : JUL

Y 7,199 8
Operabl e Uni t 9

, KF P Remova l 2 4 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Fo y residence

, locate d

a t 17 2 Sout h Toled o Street

, Leadville

, Colorado

, wa s signe d o n Jul y 7

, 1998

. 

### Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lead level s i n sample s collecte d fro m th e gravel an d sla g driveway

, fro m th e landscape d

are a adjacen t t o th e driveway

, an d fro m th e smal l flowe r bed i n th e fron t yar d

nea r th e drivewa y a t th e Fo y propert y exceede d th e Kid s Firs t trigge r valu e o f 

### 3,50 0 ppm

. I n addition

, th e area s ar e eithe r bar e o r accessibl e t o th e children

. Remediatio n activitie s include d remova l o f soi l a s appropriat e t o facilitat e gradin g and drainag e requirements ; installatio n o f a concret e pa d centered o n the sidewalk ; remova l o f si x inche s o f materia l and installatio n o f a minimu m
o f si x inche s o f compacte d roa d bas e o n th e remainde r o f th e driveway ; installatio n o f a minimu m o f si x inche s o f to p soi l i n th e landscape d area ; and

remova l o f a minimu m o f si x inche s o f materia l and replacemen t wit h topsoi l i n the flowe r bed

. 

### Th e structur e o n thi s propert y ha s bee n determine d t o b e non-contributin g t o th e Leadvill e Histori c Minin g Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. I n addition

, becaus e th e area s t o be remediate d hav e bee n disturbed

, archaeologica l potentia l i s no t considere d significant

. Therefor e th e 

### respons e actio n wa s no t monitore d b y a cultura l resourc e professional

.

Printed on Recycled PaperTh e

Remova l Actio n a t th e Fo y residenc e was complete d b y Jul y 11,199 8 ACTIO N MEMORANDU M SIGNED : JUL Y 7,199 8 REMOVA L START : JUL

Y 7,199 8 REMOVA L COMPLETE : JUL

Y 11,199 8
Operabl e Uni t 9

, KF P Remova l 2 5 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Kolakowsk i residenc e locate d a t 81 3 Spruc e Street

, Leadville

, Colorado

, wa s signe d o n Jul y 7

, 1998

. 

### Sample s collecte d unde r th e Kid s Firs t Progra m determine d that lea d level s i n sample s collecte d fro m th e soil s i n th e flowe r be d alon g th e bac k o f th e hous e an d the smal l bac k yar d at the Kolakowsk i propert y exceede d the Kid s First trigge r valu e o f 3,50 0 ppm

. Th e gras s i n th e bac k yar d i s dens e and i n goo d condition

. Therefore

, no remediatio n activitie s wer e performe d i n that

area

. Remediatio n activitie s i n th e flowe r be d alon g th e wes t sid e o f th e house 

### include d remova l o f materia l t o a minimu m dept h o f si x inche s an d replacemen t wit h si x inche s o f to p soil

. Th e structur e o n thi s propert y ha s bee n determine d t o b e potentiall y contributin g t o th e Leadvill e Histori c Minin g Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. SHP O assigne d th e sit e number 5LK40.10 5 t o thi s property

. However

, because th e area s t o b e remediate d hav e bee n 

### disturbed

, archaeologica l potentia l wa s not considere d t o b e significant

. Therefore

, th e respons e actio n wa s no t monitore d b y a cultura l resourc e professional.

. The Remova l Actio n a t the Kolakowsk i residenc e wa s complete d b y Jul y 14,1998

. ACTIO N MEMORANDU M SIGNED : JUL Y 7,199 8 REMOVA L START : JUL

Y 7,199 8 REMOVA L COMPLETE : JUL

Y 14,199 8

Printed on Recycled PiperOperabl

e Uni t 9

, KF P Remova l 2 6 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Patt i residenc e , locate d at 13 0 Wes t 7 t h Street

, Leadville

, Colorad o wa s signe d o n Jul y 7,1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s i n sample s collecte d fro m th e soil s i n th e flowe r be d alon g th e 

### wes t sid e o f th e house an d th e fron t yar d a t th e Patt i propert y exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. Th e gras s i n th e fron t yar d i s dens e an d 

### i n goo d condition

. N o remediatio n activities wer e performe d i n tha t area

. Remediatio n activitie s i n th e flowe r be d alon g th e wes t sid e o f th e hous e include d remova l o f materia l t o a minimu m dept h o f si x inche s an d replacemen t wit h si x inche s o f to p soil

. 

### Th e structur e o n thi s propert y ha s bee n determine d t o b e potentiall y contributin g t o th e Leadvill e Histori c Minin g Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. SHP O assigne d th e sit e number 5LK40.10 7 t o thi s property

. However

, becaus e th e area s t o b e remediate d hav e bee n disturbed

, archaeologica l potentia l i s no t considere d t o b e significant

. 

### Therefore

, th e respons e actio n wa s no t monitore d b y a cultura l resourc e professional

. The Remova l Actio n a t the Patt i residenc e wa s complete d b y Jul y 14,1998

. ACTIO N MEMORANDU M SIGNED : JUL Y 7,199 8 REMOVA L START : JUL

Y 7,199 8 REMOVA L COMPLETE : JUL

Y 14, 199 8
Operabl e Uni t 9

, KF P Remova l 2 7 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Ramo s residenc e , locate d a t Lak e For k Traile r Par k #26

, Leadville

, Colorado

, wa s signe d o n Jul y 7

, 

### 1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s i n sample s collecte d fro m soil s i n th e bar e area s a t th e fron t and bac k

Printed on Recycled Papero

f th e traile r and yar d surroundin g th e traile r a t th e Ramo s propert y exceede d th e Kid s Firs t trigge r valu e o f 3,500 ppm

. I n addition

, th e gras s i n yar d i s 

### spott y and i n poo r condition

. Remediatio n activitie s include d remova l o f materia l t o a minimu m dept h o f si x inche s i n th e tw o bar e area s an d th e yard

. To p soi l an d so d wer e installe d i n th e area

. A fiv e inc h stri p o f topsoi l (t o allo w plantin g o f beddin g plants ) wa s 

### installe d alon g th e edges

. Th e structur e on thi s propert y ha s bee n determine d t o b e non-contributin g t o th e Leadvill e Histori c Minin g Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. I n addition

, becaus e th e area s t o b e remediate d hav e bee n 

### disturbed

, archaeologica l potentia l i s no t considere d significant

. Therefor e respons e action s wer e no t monitore d b y a cultura l resourc e professional

. Th e Remova l Actio n a t th e Ramo s residenc e wa s complete d b y Jul y 17,1998

, ACTIO N MEMORANDU M SIGNED : JUL Y 7,199 8 REMOVA L START : JUL

Y 7,199 8 REMOVA L COMPLETE : JUL

Y 17,199 8
Operabl e Uni t 9

, KF P Remova l 2 8 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Alie n residence

, locate d

a t 20 3 Wes t 9 t h St

, Leadville

, Colorad o wa s signe d o n Augus t 17,1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s in th e sampl e collecte d fro m soil s i n the bar e are a o f the bac k yar d at the Alie n propert y exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. Remediatio n activitie s include d remova l o f materia l t o a minimu m dept h o f si x 

### inche s an d replacemen t wit h Clas s si x roa d bas e whic h wa s installe d an d compacte d i n thi s area

. A borde r o f railroa d ties wa s installe d between th e
roa d bas e an d existin g grass

. 

### Th e structur e o n thi s propert y ha s bee n determine d t o b e potentiall y contributin g t o th e Leadvill e Histori c Landmar k Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. SHP O assigne d th e sit e number 5LK40.10 6

^X? Printed an Recycled Paper 8

### t

o thi s property

. I n addition

, archaeologica l potentia l ha s bee n identifie d a t 

### thi s property

. Therefor e a cultura l resourc e professiona l monitore d excavatio n
o f soil s at thi s propert y The Remova l Actio n at the Alie n residenc e wa s complete d b y September?

, 1998

. ACTIO N MEMORANDU M SIGNED : AUGUS

T 17,199 8 REMOVA L START : AUGUS

T 17,199 8 REMOVA L COMPLETE : SEPTEMBE R

7,199 8
Operabl e Uni t 9

, KF P Remova l 29 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Cruz-Sanche z residenc e was signe d o n Augus t 17,1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s in th e sample s collecte d fro m soil s i n th e drivewa y an d th e yar d i n fron t o f th e traile r a t th e Cruz-Sanche z propert y exceede d the Kid s Firs t trigge r valu e o f 3,500 pp m an d the are a i s bare

. 

### Remediatio n activitie s ar e describe d below : The conditio n o f the fron t yar d wa s evaluate d i n the fiel d an d the are a wa s 

### prepare d fo r so d an d topsoi l an d so d wa s installed

. Remediatio n activitie s fo r th e driveway

, show n o n Figur e 3

, includ e remova l o f a minimu m o f si x inche s


### o f material

. A si x inc h reinforce d concret e pad wil l b e installe d i n the drivewa y t o matc h surroundin g grad e and wil l b e grade d t o drai n towar d th e street

. T h e structur e o n thi s propert y doe s no t contribut e t o th e Leadvlll e Histori c Landmar k Distric t becaus e i t i s a mobil e home

. Excavatio n o f soil s a t thi s propert y wa s no t monitore d b y a cultura l resourc e professiona l becaus e th e
are a ha d bee n disturbed

. The Remova l Actio n a t the Cruz-Sanche z residenc e wa s complete d b y Septembe r 2,1998

. ACTIO N MEMORANDU M SIGNED : AUGUS

T 17,199 8 REMOVA L START : AUGUS

T 17,199 8 REMOVA L COMPLETE : Septembe r

2,199 8

**? Printed on Recycled Piper

9Operabl

e Uni t 9

, KF P Remova l 3 0 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Daigl e residence

, locate d a t 32 3 Wes t 4 t h Street

, wa s signe d on Augus t 17

, 1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s in th e 

### sample s collecte d fro m soil s i n the bar e are a i n the southeas t come r o f the propert y an d soil s i n the flowe r be d i n the backyar d at the Daigl e propert y exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. Th e are a i n th e southeas t



### come r i s i n poo r conditio n an d soil s i n th e flowe r be d ar e accessibl e t o children

. Remediatio n activitie s fo r the bar e are a include d remova l o f materia l t o a minimum dept h o f si x inche s an d replacemen t wit h clean topsoi l an d sod

. A n 

### approximat e on e foo t wid e stri p o f rive r washe d gravel wa s installe d alon g th e garage

. Meta l edgin g wa s installe d betwee n th e gravel an d th e sod

. Remediatio n for th e flowe r be d include d remova l o f a minimu m si x inche s o f soi l an d replacemen t wit h clea n topsoi l t o matc h th e existin g grade

. Th e structur e on thi s propert y ha s bee n determine d t o b e potentiall y contributin g t o th e Leadvill e Histori c Landmark Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. SHP O assigne d th e sit e numbe r 5LK40.11 0 

### t o thi s property

. Archaeologica l potentia l wa s no t identifie d a t thi s property

. Excavatio n o f soil s wa s no t monitore d b y a cultura l resourc e professional

. The Remova l Actio n a t the Daigl e residenc e wa s complete d o n Septembe r 2,1998

. ACTIO N MEMORANDU M SIGNED : AUGUS

T 17,199 8 REMOVA L START : AUGUS

T 17,199 8 REMOVA L COMPLETE : SEPTEMBE R

2,199 8
Operabl e Uni t 9

, KF P Remova l 3 1 A n Actio n Memorandu m fo r a Tim e Critica l Remova l at th e Rhoade s residence

, locate d a t 21 1 Eas t 4 t h Street

, Leadville

, Colorado

, wa s signe d o n Septembe r 17

, 1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s i n th e sample s collecte d fro m soil s i n th e bar e are a a t th e a t th e sout h

^+? Printed on Recycled Paper 1 0

### en

d o f th e drivewa y an d withi n th e are a o f th e concret e foundatio n o f th e Rhoades propert y exceede d th e Kid s Firs t trigge r valu e o f 3,500 ppm

. Th e 

### lead concentration s i n sample s collecte d fro m flowe r bed s alon g th e nort h an d

wes t side s o f th e house als o exceede d th e Kid s Firs t trigge r value

. Th e lea d concentratio n i n th e sample s collecte d fro m th e gravel drivewa y an d th e adjacen t eas t sid e yar d di d no t excee d th e Kid s Firs t trigge r value

. T h e Kid s Firs t Wor k Grou p (KFWG ) recommende d remediatio n o f th e area s wit h lea d concentration s tha t exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 pp m (th e flowe r bed s alon g th e nort h an d wes t side s o f th e hous e an d th e bar e are a a t th e sout h en d o f th e drivewa y an d withi n th e are a o f th e concret e 

### foundation)

. However

, th e propert y owner s opte d fo r n o actio n i n th e flowe r bed s (whic h hav e thick

, wel l establishe d flower s an d grasses ) alon g th e nort h



### an d wes t side s o f th e house

. Lea d concentration s i n the sample s collecte d fro m the drivewa y and the adjacen t eas t sid e yar d di d no t excee d th e Kid s firs t trigge r valu e o f 3,50 0 

### ppm

. However

, a chil d wh o ha d a n elevate d bloo d lea d leve l (greate r tha n 4 0 ug/dl ) an d underwen t medical treatmen t t o reduc e he r bloo d lea d level spend s
a significan t amoun t o f tim e a t thi s property

. Therefore

, du e t o thi s specia l circumstance

, th e decisio n wa s mad e t o remediat e th e drivewa y an d eas t sid e yard

. Remediatio n activitie s include d remova l o f material

, a s appropriate

, t o 

### facilitat e gradin g an d drainag e requirement s an d t o allo w installatio n o f a minimu m si x inc h cove r i n th e area s t o b e addressed

. Cover material s 

### consiste d o f concrete

, compacte d roa d base

, topsoil

, topsoi l an d sod

, an d gravel

. T h e Stat e Histori c Preservatio n Offic e (SHPO ) ha s determine d that thi s propert y potentiall y contributes t o th e Leadvill e Histori c Landmark District

. 

### Archaeologica l potentia l wa s identifie d a t thi s property

. Therefore

, a cultura l

resourc e professiona l monitore d excavatio n o f soil s a t thi s property

. Th e Remova l Actio n a t th e Rhoade s residenc e wa s complete d o n Septembe r 4,1998

. ACTIO N MEMORANDU M SIGNED : SEPTEMBE R

17,199 8 REMOVA L START : AUGUS

T 26,199 8 REMOVA L COMPLETE : SEPTEMBE R

4,199 8

*X y Printed o n Recycled Piper

1 1Operabl

e Uni t 9

, KF P Remova l 3 2 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Sorci c residence

, locate d a t 43 0 Eas t 8 t h Street

, Leadville

, Colorado

, wa s signe d on Septembe r 17

, 1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d 

### level s i n the sample s collecte d fro m soil s i n the bar e are a i n the bac k yar d

and fro m th e gravel covere d are a i n th e fron t yar d o f th e Sorcic propert y exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. 

### Remediatio n activitie s fo r the bar e are a i n the backyard include d remova l o f materia l t o a minimu m dept h o f si x inches

. Clea n topsoi l and so d wa s installe d ove r th e are a wit h th e exceptio n o f a stri p on e foo t wid e stri p alon g the hous e wher e rive r washe d gravel wa s installed

. Meta l edgin g wa s installe d between th e gravel an d th e sod

. Remediatio n fo r th e grave l wal k i n 

### th e fron t yar d include d remova l o f a minimu m si x inche s o f soi l an d replacemen t wit h a concret e sidewal k grade d t o matc h th e surroundin g 

### grades

. Th e drivewa y an d drainag e swal e wer e excavated

, a s appropriate

, t o allo w drainage

. A n arc h corrugate d meta l pip e (CMP ) wa s installe d i n th e drainag e swale

. A si x inc h reinforce d concret e sla b wa s constructe d ove r th e 

### C M P fo r th e drivewa y t o matc h th e surroundin g grades

. The structur e o n thi s propert y ha s bee n determine d t o b e potentiall y contributin g t o th e Leadvill e Histori c Landmark Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. SHP O assigne d th e sit e numbe r 5LK126 3 t o thi s property

. Archaeologica l potentia l wa s identifie d i n th e backyard a t thi s property

. Therefore

, a cultura l resourc e professiona l monitore d excavatio n o f soil s i n th e backyard

. Th e Remova l Actio n a t th e Sorci c residenc e wa s complete d on Septembe r 14,1998

. ACTIO N MEMORANDU M SIGNED : SEPTEMBE R

17,199 8 REMOVA L START : SEPTEMBE R

3,199 8 REMOVA L COMPLETE : SEPTEMBE R

14,199 8

*%r Printed en Recycled Paper 1 2Operabl

e Uni t 9

, KF P Remova l 3 3 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Wohlmut h residence

, locate d a t 21 4 Wes t 7 t h Street

, Leadville

, Colorad o wa s signe d o n Septembe r 17

, 1998

. Sample s collecte d unde r th e Kid s Firs t Progra m 

### determine d that lea d level s i n th e sample s collecte d fro m soil s i n th e gras s
are a i n th e fron t yard ; th e flowe r bed s on th e eas t an d wes t side s o f th e fron t porch

, the quarte r circl e flowe r bed s i n the fron t yar d nex t t o the sidewalk

, an d the are a i n the backyard wit h thi n gras s cove r o f the Wohlmut h propert y exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. 

### Remediatio n activitie s include d remova l o f soil s t o a minimu m dept h o f si x inche s fro m th e gras s are a an d quarte r circl e flowe r bed s i n th e fron t yard

. Clea n topsoi l wa s place d i n the excavated are a and grade d t o matc h the 

### surroundin g grade

. So d wa s the n installed

. Th e flowe r be d o n th e wes t sid e o f th e porc h wa s remove d an d reshape d simila r t o th e flowe r be d o n th e eas t sid e o f th e porch

. A minimu m o f si x inche s o f materia l wa s excavated fro m th e flowe r bed s aroun d th e fron t porc h an d alon g th e fron t o f th e house

. Clea n topsoi l wa s the n installe d i n th e tw o flowe r bed s t o matc h th e surroundin g grade

. A minimu m o f si x inche s o f materia l wa s remove d fro m th e area s wit h thi n gras s i n the backyard

. Clea n topsoi l wa s place d i n the excavate d area s
an d grade d t o matc h th e surroundin g grades

. So d wa s the n installed

. Th e structur e o n thi s propert y ha s bee n determine d t o b e potentiall y contributin g t o th e Leadvill e Histori c Landmark Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. SHP O assigne d th e sit e number 5LK126 2 t o 

### thi s property

. Archaeologica l potentia l wa s no t identifie d a t thi s property

. Therefore

, a cultura l resourc e professiona l di d no t monito r excavatio n o f soil s
at thi s property

. Th e Remova l Actio n a t th e Wohlmut h residenc e wa s complete d on Septembe r 29,1998

. ACTIO N MEMORANDU M SIGNED : SEPTEMBE R

17,199 8 REMOVA L START : SEPTEMBE R

17,199 8 REMOVA L COMPLETE : SEPTEMBE R

29,199 8

"* ^ Printed e n Recycled Paper 1 3Operabl

e Uni t 9

, KF P Remova l 3 4 A n Actio n Memorandu m fo r a Tim e Critica l Remova l at th e Grant residence

, locate d a t 22 5 Eas t 9t h Street

, i n Leadville

, Colorad o wa s signe d o n Septembe r 24

, 1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s i n th e sample s collecte d fro m soil s i n th e bar e
are a i n th e bac k yard ; fro m th e soil s i n th e fron t an d eas t yard s an d fro m th e soil s i n the forme r flowe r be d alon g the eas t sid e o f the house

, o n the Gran t property

, exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. Remediatio n activitie s include d remova l o f soi l t o a minimu m dept h o f si x 

### inche s fro m th e fron t an d eas t sid e yards

. Clea n topsoi l wa s place d i n th e excavate d are a an d grade d t o matc h th e surroundin g grad e an d t o facilitat e drainag e awa y fro m th e house

. So d wa s the n installed

. Th e soil s i n th e 

### forme r flowe r bed s wer e remove d t o a minimu m dept h o f si x inches

. A one 

### foo t wid e stri p o f rive r washe d grave l wa s installe d alon g the house

. Meta l edgin g wa s b e installe d between th e gravel an d th e sod

. A minimu m o f si x inche s o f materia l wa s remove d fro m th e bar e are a i n th e bac k yard

. Roa d bas e wa s installe d an d compacte d i n th e excavate d are a t o matc h th e surroundin g grad e an d t o facilitat e drainag e awa y fro m th e house an d shed

. 

### The structur e o n thi s propert y ha s bee n determine d t o b e potentiall y contributin g t o th e Leadvill e Histori c Landmar k Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. SHP O assigne d th e sit e number 5LK126 9 t o 

### thi s property

. Archaeologica l potentia l wa s identifie d i n th e backyard a t thi s property

. Therefore

, a cultura l resourc e professiona l monitore d excavatio n o f 

### soil s i n th e backyard

. Th e Remova l Actio n a t th e Gran t residenc e wa s complete d o n Septembe r 29,1998

. ACTIO N MEMORANDU M SIGNED : SEPTEMBE R

24,199 8 REMOVA L START : SEPTEMBE R

24,199 8 REMOVA L COMPLETE : SEPTEMBE R

29,199 8

*+? Printed on Recycled Paper 1 4Operabl

e Uni t 9

, KF P Remova l 3 5 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Lin d residence

, locate d

a t 22 9 Eas t 9t h Street

, i n Leadville

, Colorad o wa s signe d on Septembe r 24,1998

. 

### Sample s collecte d unde r th e Kid s Firs t Progra m determine d that lea d level s i n th e sampl e collecte d fro m soil s i n th e are a covere d wit h spott y gras s i n th e bac k yar d an d th e eas t sid e yar d o f th e Lin d property

, exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. Remediatio n activitie s include d remova l o f soi l t o a minimu m dept h o f si x 

### inche s fro m the bac k yard

. Clea n topsoi l wa s place d i n the excavate d are a
an d grade d t o matc h the surroundin g grad e an d t o facilitat e drainag e awa y fro m th e house

. So d wa s the n installed

. A on e foo t wid e stri p o f rive r 

### washe d gravel wa s installe d alon g th e house

. Meta l edgin g wa s installe d 

### between th e gravel an d th e sod

. A minimu m o f si x inche s o f materia l wa s
remove d fro m th e are a betwee n th e eas t sid e o f th e hous e and th e adjacen t hous e and replace d wit h pe a gravel

. Th e structur e o n thi s propert y ha s bee n determine d t o b e potentiall y contributin g t o th e Leadvill e Histori c Landmar k Distric t b y th e Stat e Histori c Preservatio n Offic e (SHPO)

. SHP O assigne d th e sit e number 5LK126 1 t o 

### thi s property

. Archaeologica l potentia l wa s identifie d i n th e backyard a t thi s property

. Therefore

, a cultura l resourc e professiona l monitore d excavatio n o f 

### soil s i n the backyard

.

The Remova l Actio n a t the Lin d residenc e wa s complete d o n Septembe r 28,1998

. ACTIO N MEMORANDU M SIGNED : SEPTEMBE R

24,199 8 REMOVA L START : SEPTEMBE R

24,199 8 REMOVA L COMPLETE : SEPTEMBE R

28,199 8

XJC y Printed o n Recycled Ptper 1 5Operabl

e Uni t 9

, KF P Remova l 3 6 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Lykin s residenc e locate d a t 51 2 ! 4 Eas t 7 t h Street

, Leadvtlle

, Colorado

, wa s signe d o n Septembe r 24

, 1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s i n th e sampl e collecte d fro m soil s i n th e are a between th e sidewal k an d the house ; the are a alon g Eas t 7t h Street ; the soil s i n the eas t sid e yard ; an d the northeast come r o f the backyar d o f the Lykin s property

, exceede d the Kid s 

### Firs t trigge r valu e o f 3,50 0 ppm

. Th e remediatio n activitie s include d remova l o f soi l t o a minimu m dept h o f si x inche s fro m the area s t o b e remediated

. Clea n topsoi l wa s place d i n the 

### excavated are a i n th e eas t sid e yard

, an d grade d t o matc h th e pre-existin g grad e an d t o facilitat e drainag e awa y fro m th e house

. So d wa s the n installed

. A stri p o f grave l wa s installe d alon g the house

. Meta l edgin g wa s 

### installe d between the gravel and the sod

. Clea n topsoi l wa s place d i n the "L " shape d are a i n th e southwes t come r o f th e eas t sid e yard

. Clea n topsoi l wa s place d i n th e excavatio n between th e hous e an d th e sidewal k t o matc h th e grad e o f th e sidewalk

. Roa d bas e wa s installe d i n th e are a between th e asphal t drivewa y and th e house and compacte d t o matc h th e grad e o f th e drivewa y an d t o facilitat e drainag e awa y fro m th e house

. Reinforce d 

### concret e wa s installe d i n th e excavatio n o n th e slop e an d th e drainag e swal e alon g Eas t 7t h Stree t an d matchin g th e grad e o f th e asphalt

. Clea n san d wa s place d i n th e northeas t come r o f th e backyard

. A si x b y si x foo t sandbo x wa s 

### constructe d withi n thi s area

. T h e Stat e Histori c Preservatio n Offic e (SHPO ) determine d tha t th e structur e locate d o n thi s propert y doe s no t contribut e t o th e Leadvill e Histori c Landmar k District

. Archaeologica l potentia l wa s identifie d i n th e backyar d a t thi s 

### property ; therefore

, a cultura l resourc e professiona l monitore d excavatio n o f soil s i n th e backyard

. Archaeologica l potentia l wa s no t identifie d i n th e othe r area s t o b e remediated ; therefore

, monitorin g b y a cultura l resourc e professiona l wa s no t require d i n th e othe r area s involve d i n thi s respons e action

.

**? Printed on Recycled Paper

1 6Th

e Remova l Actio n a t th e Lykin s residenc e wa s complete d on Octobe r 19,1998

. ACTIO N MEMORANDU M SIGNED : SEPTEMBE R

24,199 8 REMOVA L START : SEPTEMBE R

24,199 8 REMOVA L COMPLETE : OCTOBE

R 19,199 8
Operabl e Uni t 9

, KF P Remova l 3 7 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Quintan a residenc e locate d a t Lake For k Traile r Par k #115

, Leadville

, Colorado

, wa s signe d o n Septembe r 24

, 1998

. Sample s collecte d unde r th e Kid s Firs t Progra m 

### determine d tha t lea d level s i n th e sampl e collecte d fro m soil s fro m th e flowe r be d i n the fron t yard ; fro m th e soil s i n the nort h sid e yar d an d fro m the soil s
a t th e eas t en d o f th e lo t an d alon g th e sout h sid e o f th e mobil e hom e o f th e Quintan a property

, exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. Th e remediatio n activitie s include d remova l o f soi l t o a minimu m dept h o f si x 

### inche s fro m th e area s t o b e remediated

. Clea n topsoi l wa s place d i n th e excavated are a i n th e flowe r be d a t th e fron t o f th e mobil e hom e an d grade d 

### t o facilitat e drainag e awa y fro m th e mobil e home

. So d wa s the n installed

. Roa d bas e wa s place d an d compacte d i n th e excavation alon g th e nort h sid e 

### o f the porch

. Clea n topsoi l and so d wa s installe d i n the excavatio n alon g the nort h sid e o f th e mobil e hom e t o th e eas t en d o f th e lo t an d grade d t o facilitat e drainag e awa y fro m th e mobil e home

. Roa d bas e wa s place d an d compacte d 

### i n th e excavatio n a t th e eas t en d o f th e she d an d alon g th e sout h sid e o f th e mobil e hom e an d grade d t o facilitat e drainag e awa y fro m the she d an d mobil e home

. 

### Th e structur e locate d o n thi s propert y i f a mobil e home ; therefore

, i t doe s no t contribut e t o th e Leadvill e Histori c Landmar k Distric t Archaeologica l potentia l wa s no t identified ; therefor e monitorin g b y a cultura l resourc e professiona l wa s no t required

.

" ^ Printed o n Recycled Paper 1 7Th

e Remova l Actio n a t th e Quintan a residenc e wa s complete d on Octobers

, 1998

. ACTIO N MEMORANDU M SIGNED : SEPTEMBE R

24,199 8 REMOVA L START : SEPTEMBE R

24,199 8 REMOVA L COMPLETE : OCTOBE

R 8,199 8
Operabl e Uni t 9

, KF P Remova l 3 8 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Jauernig g residenc e locate d a t 12 5 Eas t 13t h Street

, Leadville

, Colorado

, wa s signe d on 

### Octobers

, 1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s i n th e sampl e collecte d fro m soil s i n th e drivewa y an d th e are a adjacen t t o th e eas t sid e o f th e hous e on th e Jauernig g property

, exceede d t h e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. Th e remediatio n activitie s include d remova l o f soi l t o a minimu m dept h o f si x inche s fro m th e area s t o b e remediated

. A reinforce d concret e pa d wa s installe d i n th e excavatio n i n th e drivewa y and matche d th e grad e o f Eas t 13t h 

### Street

. A stri p o f grave l wa s installe d alon g th e eas t sid e o f th e concrete

. Grave l wa s place d i n th e excavatio n t o th e eas t sid e o f th e house

. T h e Stat e Histori c Preservatio n Offic e (SHPO ) determine d tha t th e structur e 

### locate d o n thi s propert y doe s no t contribut e t o th e Leadvill e Histori c Landmark District

. Archaeologica l potentia l wa s no t identifie d a t thi s property ; therefore

, a cultura l resourc e professiona l wa s no t require d t o monito r excavatio n o f soil s The Remova l Actio n a t the Jauernig g residenc e wa s complete d o n October 19,1998

. ACTIO N MEMORANDU M SIGNED : OCTOBE

R 5,199 8 REMOVA L START : OCTOBERS

, 199 8 REMOVA L COMPLETE : OCTOBE

R 19,199 8

X3j y Printed en Recycled Paper 1 8Operabl

e Uni t 9

, KF P Remova l 39 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Grieg o residenc e locate d a t 61 8 Eas t 7t h Street

, Leadville

, Colorado

, wa s signe d on 

### Octobe r 22,1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d tha t lea d level s i n th e sampl e collecte d fro m soil s i n th e wes t sid e yar d o f th e Grieg o property

, exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

. The remediatio n activitie s include d remova l o f soi l t o a minimu m dept h o f si x inche s fro m the are a t o b e remediated

. Clea n topsoi l wa s place d i n the 

### excavated are a i n th e wes t sid e yar d an d grade d t o facilitat e drainag e awa y fro m th e house

. Nativ e see d mi x wa s the n placed

. Th e structur e on thi s propert y i s a modula r hom e and

, therefore

, doe s no t contribut e t o th e Leadvill e Histori c Landmar k District

. Archaeologica l potentia l wa s identifie d a t thi s property ; therefore

, a cultura l resourc e professiona l monitore d excavatio n o f soil s a t thi s property

. Th e Remova l Actio n a t th e Grieg o residenc e wa s complete d on Novembe r 6,1998

. ACTIO N MEMORANDU M SIGNED : OCTOBE

R 22,199 8 REMOVA L START : OCTOBE

R 22,199 8 REMOVA L COMPLETE : NOVEMBE R

6,199 8
Operabl e Uni t 9

, KF P Remova l 4 0 A n Actio n Memorandu m fo r a Tim e Critica l Remova l a t th e Lee-Soba l residenc e locate d a t 31 1 Eas t 4t h Street

, Leadville

, Colorado

, wa s signe d o n October 22

, 1998

. Sample s collecte d unde r th e Kid s Firs t Progra m determine d that lea d level s i n th e sampl e collecte d fro m soil s i n th e parkin g area ; i n th e fron t an d

wes t sid e yards ; i n th e pil e i n th e northwes t comer ; i n th e bar e are a i n th e wes t sid e o f th e bac k yard ; i n th e eas t sid e o f th e bac k yard ; an d i n th e flowerbe d i n th e eas t sid e yar d o f th e Lee-Soba l property

, exceede d th e Kid s Firs t trigge r valu e o f 3,50 0 ppm

.

^X? Printed on Recycled Paper 1 9Th

e remediatio n activitie s include d remova l o f soi l fro m th e area s t o b e remediate d t o a n adequat e dept h t o allo w fo r replacemen t o f si x inche s o f 

### clea n materia l an d t o facilitat e drainag e awa y fro m th e house

. A six-inc h reinforce d concret e pa d wa s constructe d i n fron t o f th e house

. A concret e sidewal k wa s constructe d fro m th e sout h en d o f th e concret e drivewa y t o th e 

### porc h o n th e eas t sid e o f th e house

. A flowe r be d wa s constructe d eas t o f th e hous e an d fille d wit h clea n topsoil

. Si x inche s o f rive r washe d grave l wa s 

### place d i n th e excavated are a eas t o f th e new driveway

. Si x inche s o f compacte d roa d bas e wa s place d i n th e excavatio n nort h o f th e grave l an d

ne w concret e pad

, extendin g wes t t o th e fenc e alon g Star r Ditc h an d nort h t o th e edg e o f th e asphal t o n Eas t 4t h Street

. Si x inche s o f clea n topsoi l wa s place d i n th e excavatio n i n th e wes t sid e o f th e fron t yar d an d al l o f th e bac k yard

. Topsoi l onl y wa s place d i n th e cente r o f th e wes t fron t yar d an d alon g 

### the wes t and sout h edge s o f the bac k yard

. The remainde r o f the fron t yar d

an d wes t hal f o f th e bac k yar d wa s seede d wit h Clima x native see d mix

. Sod

wa s installe d i n th e eas t sid e o f th e bac k yard

. Si x inche s o f grave l wa s place d i n th e are a betwee n th e hous e an d th e ne w sidewal k an d alon g th e perimete r o f th e house

. T h e Stat e Histori c Preservatio n Offic e (SHPO ) determine d tha t th e structur e locate d o n thi s propert y doe s not contribut e t o the Leadvill e Histori c Landmar k District

. Archaeologica l potentia l wa s identifie d a t thi s property ; therefore

, a 

### cultura l resourc e professiona l monitore d th e excavatio n o f soils

. Th e Remova l Actio n a t th e Lee-Soba l residenc e wa s complete d o n Octobe r 27,1998

. ACTIO N MEMORANDU M SIGNED : OCTOBE

R 22,199 8 REMOVA L START : OCTOBE

R 22

, 199 8 REMOVA L COMPLETE : OCTOBE

R 27,1998

. V

. COS T INFORMATIO N Asarco

, Inc

. i s th e part y tha t wa s responsibl e fo r performin g thes e remova l actions

. V I

. DISPOSITIO N O F WASTE S Al l waste s remove d durin g th e cours e o f thes e remova l action s wer e dispose d o n sit e a s approve d b y EPA

.

*^& Printed en Recycled Paper 2 0