UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y REGIO N 6 RECOR D O FDECISIO N OPERABL E UNI T 2 OFF-SITE RESIDENTIA L YARD S AN D HIG H ACCES S AREA S MAN Y DIVERSIFIE D INTERESTS , INC . SUPERFUN D SIT E

TXD00808340 4 HOUSTON , TEXA S SEPTEMBE R23 , 200 5



### 193699TABLE O FCONTENT S

Sectio n Pag e ABBREVIATION S AN D ACRONYM S v PAR T 1 : TH E DECLARATIO N 1 1. 0 SITENAM EAN D LOCATIO N 1 2. 0 STATEMEN T O FBASI S AN D PURPOS E1 3. 0 DESCRIPTIO N O FTH EREMED Y - N O FURTHE RREMEDIA LACTIO N 2 4. 0 STATUTORY DETERMINATION S 2 5. 0 AUTHORIZIN GSIGNATURE3 PAR T 2 : TH E DECISIO N SUMMAR Y 5 6. 0 SITENAME , LOCATION , AN D BRIEFDESCRIPTIO N 5 7. 0 SIT EHISTOR Y AN D ENFORCEMEN T ACTIVITIE S 6 7.1 Histor y of

Sit e Activitie s 6 7. 2 Histor y o f

Federa l an dStat e Investigation s an dRemoval/Remedia l Action s ... . 7 7. 3 Histor y o f

CERCL A Enforcemen t

Activitie s 9 8. 0 COMMUNIT Y PARTICIPATIO N 1 0 8. 1 Community Involvemen t Pla n 1 0 8. 2 Technica l Assistan t

Gran t 1 1 8. 3 Superfun dRedevelopmen t Initiativ e 1 1 8. 4 Communit y Meeting s 1 1 8.4. 1 Communit y Meetin g fo r th e Propose dPla n fo r

O U 2 1 2 9. 0 SCOP EAN D ROL EO FOPERABL EUNI T O RRESPONS EACTIO N 1 39. 1 Operabl e Uni t 1 (On-Sit e Soil s an dGroun dWater ) 1 3 9. 2 Operabl e Uni t

2 (Off-Sit e Residentia l Soil s an dHig hAcces s Areas ) 1 3 9. 3 Operabl e Uni t

3 (Residential Crawlspaces , Kell y Villag e Housin g Comple x an d Thos e Residentia l Area s No t Addresse dunde r

Operabl e Uni t

2 ) 1 4 10. 0 SIT ECHARACTERISTIC S 1 5 10. 1 Demographic s an dCurren t Lan dUs e 1 5 10. 2 Soil s 1 5 10. 3 Regiona l Geolog y an dHydrogeolog y 1 5 10. 4 Climat e an dWin dDirectio n 1 6 10. 5 Soi l Samplin g Strateg y 1 6 10.5. 1 Soi l Investigatio n - Ai r Dispersio n Modelin g 1 6 10.5. 2 Soi l Investigatio n - Samplin g Methodolog y 1 7 10. 6 Natur e an dExten t

o f Soi l Contaminatio n 1 7 10.6. 1 Lea dContaminatio n 1 8 10.6. 2 Arseni c Contaminatio n 1 8 10.6. 3 Source s o f

Lea dContaminatio n ' 1 9 11. 0 FUTURE LAND USE S 2 0 12. 0 SITERISK S 2 1 12. 1 Huma n Healt hRis k

Assessmen t

2 1 12.1. 1 Ris k

Assessmen t

fo r EP A Remova l Actio n fo r

Lea d2 2 12.1. 2 Futur e Risk s 2 3 12. 2 Uncertaintie s i n th e Ris k Assessmen t

2 8 12.2. 1 Lea d2 8 12.2. 2 Arseni c - Residentia l Yar d2 9 12.2. 3 Arseni c - Bruc e Elementar y 2 9 13. 0 BLOO D LEAD STUD Y 2 9 14. 0 CONCLUSION S 2 9
1 114. 1 Lea dContaminatio n an dRisk s 3 0 14. 2 Arseni c Contaminatio n an dRisk s 3 0 14. 3 Sourc e Evaluatio n 3 0 15. 0 SIGNIFICAN T CHANGE S 3 1 15. 1 Kell y Villag e Housin g Comple x Histor y 3 1 16. 0 STAT EROL E3 2 17. 0 COMMUNIT Y ACCEPTANC E3 2 PART 3 : RESPONSIVENES S SUMMAR Y 3 3 18. 0 RESPONSIVENES S SUMMARY • 3 3 19. 0 REFERENCE S 3 6

i nFIGURE S

1 - Sit e Locatio n 2 - Summar y o f

EP A an dTNRC C Activitie s 3 - Area s Evaluate ddurin g Remedia l Investigatio n o f Operabl e Uni t

2 4 - Predicte dDepositio n Are aBase do n Ai r Qualit y Impac t

Mode l TABLE S Tabl e 1 - Lea dContaminatio n b y Dept h 2 - Arseni c Contaminatio n 3 - ffiUB K

Modele dLea dResult s APPENDICE S Appendi x A - Administrativ e RecordInde x B - Texa s Commissio n o n Environmenta l Qualit y Concurrenc e wit hth e Selecte dRemed y C - Transcrip t

o f th e Augus t

16 , 2005 , Publi c Meetin g D - Lette r fro mth e 5 t hWar dMother s fo r Clea n Ai r o n th e RI/F S fo r

Operabl e Uni t

2

I VABBREVIATION S AN D ACRONYM S

ARAR s BHHRA bg s Can-A M CD C CERCL A CF R CIP CO C COP C CS M yd 3 E& E Eagl e EJ ELC R EP A EMS L EP C ER A ft 2 FR F S HAA s H I H Q IEUB K k g P b MD I NERL-LV ug/d L fig/da y m g mg/k g mg/L MSS L Applicabl e o r Relevan t an dAppropriat e Requirement s Baselin e Huma n HealthRis k Assessmen t Belo w groun dsurfac e Can-A mResourc e Grou p Center s fo r Diseas e Contro l an dPreventio n Comprehensiv e Environmenta l Response , Compensation , an dLiabilit y Ac t Cod e o f Federal Regulation s Communit y Involvemen t

Pla n Chemical s o f

concer n Contaminan t

(chemical ) o f

potentia l concer n Conceptua l Sit e Mode l Cubi c yar d Ecolog y an dEnvironmen t

' Eagl e Constructio n an dEnvironmenta l Services , L.P . Environmenta l justic e Exces s lifetim e cance r

ris k U.S . Environmenta l Protectio n Agenc y (Regio n 6 ) Environmenta l Monitorin g an dSuppor t Laborator y Exposur e poin t

concentratio n Ecologica l Ris k

Assessmen t Squar e foo t Federa l Registe r Feasibilit y stud y Hig hAcces s Area s Hazar dinde x Hazar dquotien t Integrate dExposur e Uptak e Biokineti c Mode l Kilogra m Lead Man y Diversifie dInterests , Inc . Superfun dSit e (als o know n a s TESCO ) Nationa l Exposur e Researc hLaboratory , La s Vegas , Nevad a Microgra mpe r

decilite r Microgra mpe r

da y Milligra m Milligra mpe r

kilogra m Milligra mpe r

lite r Medium-specifi c screenin g leve l (EP A Regio n 6 )ABBREVIATION S AN D ACRONYM S (Continued )

NC P NP L O U PPM PR P RCRA RO D RI RI/F S RM E SARA SR I SS I SJ F T A TA G TCE Q TCLP Tetr aTec h TESC O TNRC C USD A UA O 95 % UC L XRF Nationa l 'Oi l an dHazardou s Substance s Pollutio n Contingenc y Pla n

Nationa l Prioritie s Lis t Operable , Uni t Part s permillio n Potentiall y responsibl e part y Resourc e Conservatio n an dRecover y Ac t Recordo f Decisio n Remedia l investigatio n Remedia l investigatio n an dfeasibilit y stud y Reasonabl e maximu mexposur e Superfuri dAmendment s an dReauthorizatio n Ac t Superfun dRedevelopmen t

Initiativ e Screenin g Sit e Inspectio n Sa n Jacirit o Foundr y Technica l Adviso r

i Technica l assistanc e gran t Texa s Commissio n o n Environmenta l Qualit y Toxicit y Characteristi c Leachin g Procedur e Tetr aTec| hEM Inc . Texa s Electri c Stee l Castin g Compan y Texa s Natura l Resourc e Conservatio n Commissio n Unite dState s Departmen t

o f Agricultur e Unilatera l administrativ e orde r 95 % Uppe r confidenc e limi t X-ra y fluorescenc e

V IMan y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2

PARTI : TH E DECLARATIO N 1. 0 SITE NAM E AN D LOCATIO N Th e Man y Diversifie dInterests , Inc. , Superfun dSit e i s locate di nHouston , Texa s (Harri s County) . Th e Sit e i s als o know n a s Texa s Electri c Stee l Castin g Compan y (TESCO) . Th e Nationa l Superfun dDatabas e Identificatio n Numbe r i s TXD008083404 . Th e Sit e wa s finalize d o n th e Nationa l Prioritie s Lis t o n Januar y 15 , 1999 . Th e Sit e wa s divide dint o thre e Operabl e Unit s whic har e describe di n detai l i n Sectio n 9. 0 (Scop e an dRol e o f Operabl e Unit s an d Respons e Action ) o f

thi s Recor do f

Decision . Th e Recor do f

Decisio n fo r

Operabl e Uni t

1 (On

Sit e Soil s an dGroundwater ) wa s issue do nJul y 30 , 2004 . Thi s Recor do f Decisio n i s fo r Operabl e Uni t

2 (Off-Sit e Residentia l Yard s an dHig hAcces s Areas) . Operabl e Uni t 3 (Residentia l Crawlspaces , Kell y Villag e Housin g Complex , an dThos e Residentia l Area s No t Addresse dunde r

Operabl e Uni t

2 ) specificall y addresse s residentia l crawlspaces , th e Kell y Villag e Housin g Complex , an dthos e residentia l area s wher e th e EP A coul dno t obtai nacces s fo r sampling . Th e EP A plan s t o issu e aPropose dPla n an dRecor do f Decisio n fo r

Operabl e Uni t

3 i n th e nea r future . 2. 0 STATEMEN T O FBASI S AN D PURPOS E Thi s decisio n documen t

present s th e selecte dremed y fo r th e Man y Diversifie dInterests , Inc . Superfun dSit e (MDI , hereinafte r "th e Site, " Figur e 1 - Sit e Location) . Th e Unite dState s Environmenta l Protectio n Agenc y (EPA ) ha s determine dtha t n o furthe r remedia l actio ni s necessary t o ensur e protectio n o f huma n healt han dth e environmen t fo r Operabl e Uni t

2 fo r thi s Site . N o furthe r

remedia l actio n i s necessar y becaus e previou s respons e action s hav e eliminate d th e nee dfo r

furthe r remedia l response . Thi s recordo f

decisio n (ROD ) wa s develope di n accordanc e wit hth e Comprehensiv e Environmenta l Response , Compensatio n an dLiabilit y Ac t o f 198 0 (CERCLA) , 4 2 Unite dState s Cod e §960 1 e t

seq. , a s amende db y th e Superfun dAmendment s an dReauthorizatio nAc t o f 198 6 (SARA) , and , t o th e exten t

practicable , th e Nationa l Oi l an dHazardou s Substance s Pollutio n Contingenc y Pla n (NCP) , 4 0 CF RPart 300 , a s amended . Thi s decisio n i s base do n th e Administrativ e Recordfo r Operabl e Uni t

2 , whic hha s bee n develope di n accordanc e wit hSectio n 113(k) o f CERCLA , 4 2 Unite dState s Cod e §9613(k) . Thi s Administrativ e Recor dfilei s availabl e fo r revie w a t th e Fift hWar dMulti-Servic e Cente r i n Houston , Texas , an da t

th e EP A Regio n 6 Record s Cente r i n Dallas , Texas . Th e Administrativ e RecordInde x (Appendi x A ) identifie s eac ho f th e item s comprisin g th e Administrativ e Recor d upo n whic hth e selectio n o f

th e Remedia l Actio n i s based . Th e Stat e o f Texa s (Texa s Commissio n o n Environmenta l Quality ) concur s wit hth e Selecte dRemedy . 1Man y Diversifie dInterests , Inc . Superiiin dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 3. 0 DESCRIPTIO N O FTH E REMED Y - N O FURTHE RREMEDIA LACTIO N Becaus e previou s respons e action s hav e addresse dunacceptabl e risk s pose db y sit e contaminants , th e EP A ha s determine dtha t n o furthe r actio n i s necessar y t o protec t publi c healt h o r welfar e o r th e environmen t

fo r Operabl e Uni t

2 . 4. 0 STATUTOR Y DETERMINATION S Previou s respons e action s implemente da t Operabl e Uni t

2 hav e eliminate dth e nee dfo r furthe r remedia l response . Thus , n o furthe r remedia l action s ar e necessary t o ensur e protectio n o f huma n healthan dth e environment . Th e Selecte dRemed y complie s wit hFedera l an dStat e requirement s that

ar e applicabl e o r

relevan t an dappropriat e t o th e respons e action , i s cost effective , an dutilize s permanen t solutions . I n 1999 , th e Texa s Natura l Resourc e Conservatio n Commissio n (TNRCC , no w th e Texa s Commissio n o n Environmenta l Quality ) conducte daremova l actio n an drestoratio n o f 8 9 residentia l yard s locate dnorthan dwes t o f th e MD I sit e (Eagl e 1999) . Th e remova l actio n wa s conducte dt o remov e surfac e soi l wit hlea dconcentration s tha t exceede d50 0 mg/k g an dt o reduc e th e exposur e o f

childre n an dadult s t o lead . Followin g eac hremoval , TNRC C conducte d confirmatio nsamplin g t o ensur e tha t lead-contaminate dsoil s di dno t exten dbelo w th e 18-inc h belo w groun dsurfac e (bgs ) excavatio n depth . Approximatel y 12,02 5 ton s o f soi l wer e removed , characterized , an ddispose do f at permitte dlandfills , withsom e o f th e soil s bein g take n t o a Subtitl e C landfil l (hazardou s wast e landfill) , an dsom e o f th e soil s take n t o aSubtitl e D landfil l (non-hazardou s wast e landfill) . Immediatel y followin g completio n o f th e off-sit e fiel dinvestigatio n i n2003 , EP A performe datime-critica l remova l action . I n Novembe r 200 3 an dJun e 2005 , th e EP A complete d remova l action s at

5 9 residentia l yard s an dhig hacces s area s (HAAs) , whic hinclude dth e Blanch e Kels o Bruc e Elementar y School , Fift hWar dMulti-Servic e Center , an dsevera l churches . Th e purpos e o f

th e remova l action s wa s t o remov e surfac e soi l wit hconcentration s o f lea dtha t equale do r exceede dth e cleanu p goa l o f 50 0 milligram s pe r

kilogra m(mg/kg ) t o reduc e th e exposur e o f

childre n an dadult s t o lead . EP A conducte dconfirmatio n samplin g t o ensur e tha t lead-contaminate dsoil s di dno t exten dbelo w th e 18-inc hbelo w groun dsurfac e (bgs ) excavatio n depth . h i Jul y 2005 , th e EP A bega n plannin g fo r aremova l actio n a t

th e northeaster n portio n o f th e Kell y Villag e Publi c Housin g Comple x wher e th e concentration s o f lea di n th e soil , fro m0. 5 foo t bg s t o adept ho f

1. 5 fee t bg s exceede dth e cleanu p goa l o f 50 0 mg/kg . Althoug hth e cleanu p goa

l wa s se t at 50 0 mg/kg , th e practical cleanu p leve l wa s se t at 46 3 mg/kg . Thi s lowe r mor e conservativ e leve l too k int o accoun t

th e averag e relativ e standar ddeviatio n (SD ) fo r th e X

Ra y Fluorescenc e (XRF ) instrumen t o f 3 7 mg/kg . Fo r

simplicit y an dconsistency , 50 0 mg/k gMan y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio nfo r

Operabl e Uni t

2 wil l b e use dthroughou t

th e res t o f thi s document . Th e EPA' s objectiv e wa s t o perfor ma remova l actio ni n thes e area s t o preven t futur e exposur e i n th e even t

th e deepe r soi l i s expose dt o th e surfac e b y futur e constructio no r othe r excavatio nactivities . A s o f

th e dat e o f thi s ROD , th e EP A ha s no t

obtaine dsit e acces s t o conduc t th e remova l action . EP A wil l b e discussin g option s wit hth e Cit y o f

Housto nHousin g Authorit y an dth e fina l decision s fo r th e Kell y Villag e Publi c Housin g Comple x wil l b e documente di n th e RO D fo r Operabl e Uni t

3 . Th e EP A believe s tha t

th e remova l action s whic hwer e complete dprio r t o thi s ROD , addres s al l o f

th e propertie s tha t

coul dhav e bee naffecte db y th e ai r emission s o f

particulate s containin g lea dfro mth e forme r foundr y an dfo r

whic hth e EP A wa s grante dacces s fo r sampling . Th e location s o f

th e propertie s wher e th e EP A an dTNRC C remova l action s wer e performe dar e presente do n Figur e 2 (Summar y o f EP A an dTNRC C Activities) . Durin g th e remova l action s conducte di n199 9 an d2003-2005 , confirmatio nsamplin g belo w 2 fee t

indicate dtha t

level s o f contaminant s wer e belo w th e actio nlevel s fo r lead . Becaus e Operabl e Uni t

1 ha dcontaminant s abov e level s tha t allo w fo r unlimite dus e an dunrestricte d exposure , a s amatte r

o f policy , EP A wil l conduc t

a t leas t on e fiv e year

review , fo r

al l operabl e units , t o ensur e tha t

th e implemente daction s ar e protectiv e o f huma nhealt han dth e environment . 5. 0 AUTHORIZIN G SIGNATUR E Thi s RO D document s th e Agency' s decisio no f n o furthe r remedia l actio nnecessar y fo r th e off-sit e residentia l propertie s an dhig hacces s areas . Thi s remed y wa s selecte db y th e EP A wit hth e concurrenc e o f

th e Texa s Commissio no n Environmenta l Qualit y (Appendi x B -Texa s Commissio n o n Environmenta l Qualit y Concurrenc e wit hth e Selecte dRemedy) . Th e Directo r o f th e Superfun dDivisio n(EPA , Regio n6 ) ha s bee ndelegate dth e authorit y t o approv e an dsig n thi s ROD . U.S . Environmenta l Protectio nAgenc y (Regio n6 ) By : fr

. ge ^ ^ . Date :
~ , .. ~ Samue l Coleman , P.E. , Directo r Superfun dDivisio n(6SF )09/12/200 5 14:5 8 FA X 202501026 9 EP A 11 = I D c.r

n - surcKrun u 2)002/00 2 r . eifi.'oe :

CONCURRENC E PAGE RECORD O FDECISIO N FO ROPERABL E UNI T 2 MAN Y DIVERSIFIED INTERESTS , INC . SUPERFUND SIT E 

# WLufbuMBf

t ^Jjkffig y Bennett! Dat e Staco y Bcrm c Remedial Projec t

Manage r Rflf'ai l Abreg o Casanova , Date Remedial Projec t

Manager 

### GbftssanKhoury , <- > Date Huma nHealt hRis k Assesso r Barbar aNann , Dat e 

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l Counse l Gustav o Chavairia , Chief , AR/TX Sectio n 

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iHepola . Mark Peyoke , Cnlc f

Dat e Regional COUIUB ] Superfun d 

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# Ln l Phillips , Deput y Divisio n Directo r 11 5 Buzzel] , "Writer/Edito r Dat e

TOTR L P.0 2CONCURRENC E PAG E RECOR D O FDECISIO N FO ROPERABL E UNI T 2 MAN Y DIVERSIFIE D INTERESTS , INC . SUPERFUN D SIT E

Stace y Bennett , Dat e Remedia l Projec t

Manage r Rafae l Abreg o Casanova , Dat e Remedia l Projec t

Manage r Ghassa n Khoury , Dat e Huma n Healt hRis k

Assesso r Barbar aNann , Dat e Assistan t Regiona l Counse l Gustav o Chavarria , Dat e Chief , AR/T X Section " Joh n Hepola , Dat e Chief , AR/T X Branc h Mar k Peycke , Chie f

Dat e Regiona l Counse l Superfun d Pamel aPhillips , Dat e Deput y Divisio n Directo r Jun e Buzzell , Dat e Writer/Edito rMan y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio nfo r

Operabl e Uni t

2 PART 2 : TH E DECISIO N SUMMAR Y 6. 0 SITE NAME , LOCATION , AN D BRIE FDESCRIPTIO N Th e MD I Superfun dSit e i s locate di n Houston , Texa s (Harri s County ) an di s als o know n a s Texa s Electri c Stee l Castin g Compan y (TESCO) . Th e Nationa l Superfun dDatabas e Identificatio nNumbe r

i s TXD008083404 . Th e Sit e occupie s a36-acr e trac t o f lan dlocate da t 361 7 Bae r Stree t i n Houston . Th e abandone dSit e (forme r foundry ) i s locate dapproximatel y 2 mile s eas t o f downtow nHousto nan d1 bloc k sout ho f Interstat e Highwa y 1 0 (Figur e 1 - Sit e Location ) i na nare ao f

mixe dindustria l an dresidentia l lan duse . Thi s par t o f Housto ni s know n a s th e "Fift hWard. " Accordin g t o Censu s dat afro mth e year 2000 , ther e ar e 3,95 2 person s livin g withi n!/•> mil e o f th e Site , wit haminorit y percentag e o f 98.9 % (EP A 2003c) . Th e EP A define s environmenta l justic e (EJ ) a s th e "fai r treatmen t fo r peopl e o f al l races , cultures , an dincomes , regardin g th e developmen t

o f environmenta l laws , regulations , an dpolicies. " Base do nth e hig h percen t minorit y population , th e potentia l fo r E J concern s fo r

th e Sit e i s high . Th e Sit e i s dividedint o thre e Operabl e Unit s (OUs) . O U 1 consist s o f th e soi l an d groun dwate r

locate dwithi nth e fence dboundar y tha t occupie s th e forme r

foundry . O U 2 consist s o f th e residentia l yard s an dhig hacces s area s tha t surroun dth e Site . O U 3 consist s o f th e crawlspace s underneathth e houses , Kell y Villag e Housin g Complex , an daddresse s propertie s whic hwer e no t

sample ddurin g th e RI/F S fo r OU 1 an dOU2 . Sectio n9. 0 (Scop e an d Rol e o f Operabl e Unit s an dRespons e Action ) discusse s th e OU s i n greate r detail . O U 2 , whic hi s th e subjec t

o f thi s Recor do f

Decisio n(ROD) , wa s investigate da s a distinc t OU . A s aresul t

o f th e RI/F S fo r

th e Site , th e EP A discovere d5 9 residentia l areas , includin g hig hacces s areas , wit hlea dconcentration s equa l t o o r greate r tha n50 0 mg/kg . Th e EP A complete daremova l actio nfo r thes e propertie s i nNovembe r 200 3 an dcomplete dothe r residentia l propertie s i nJun e 2005 . Th e EP A ha s bee ncoordinatin g wit hth e Cit y o f Housto n Housin g Authorit y t o conduc t aremova l actio na t

th e Kell y Villag e Publi c Housin g Complex . Sinc e sit e acces s wa s no t

grante db y th e Cit y o f

Housto nprio r

t o th e issuanc e o f

thi s RO D fo r

th e conduc t o f th e remova l action , th e Kell y Villag e Housin g Comple x wil l b e addresse dunde r Operabl e Uni t

3 . Th e EP A i s th e leadagenc y fo r th e Site remova l an dcurren t

remedia l activities . Th e Texa s Commissio no nEnvironmenta l Qualit y (TCEQ ) i s th e suppor t agency . Th e Potentiall y Responsibl e Partie s (PRPs ) identifie dfo r th e Sit e di dno t

participat e i nth e RI/F S fo r

th e Sit e (O U 1 o r OU2) .Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 7. 0 SIT E HISTOR Y AN D ENFORCEMEN T ACTIVITIE S Thi s sectio n o f

th e RO D provide s th e histor y o f th e Sit e an dabrie f

discussio n o f

th e EPA' s an dth e State' s removal , remedial , an denforcemen t activities . Th e "Propose dRule " proposin g th e Sit e t o th e Nationa l Prioritie s Lis t (NPL ) wa s publishe di n th e Federa l Registe r (FR ) o n Septembe r

29 , 1998 . Th e "Final Rule " addin g th e Sit e t o th e NP Lwa s publishe di n th e F Ro n Januar y 15 , 1999 . 7. 1 Histor y o f

Sit e Activitie s I n 1926 , TESC O bega n operation s a s ameta l castin g foundry . TESC O primaril y manufacture dspecialty molde dpart s suc ha s larg e wheels , tracks , an dminin g equipment . A secon dfoundr y wa s buil t

o n th e eastern portio n o f

th e Sit e durin g th e latte r

hal f o f 1970 . Th e proces s are aconsiste do f

th e tw o castin g plants . Plan t I produce dlarg e castings , whil e Plan t I I produce dsmalle r

castings . Bothplant s maintaine dseparat e san dsystems ; cor e ovens ; mol d makers ; electri c ar c furnaces ; pourin g facilities ; an dcleaning , annealing , an dhea t treatin g proces s areas . Variou s grade s o f

steel , includin g hig hcarbon , chrom e molybdenum , hig hnickel , an d stainles s stee l wer e cas t

a t th e TESC O facility . Scrap meta l an diro n wer e melte di n th e carbo n ar c furnaces , tested , correcte dfo r th e element s neede dfo r

th e differen t

grade s o f steel , an d poure dint o molds . Mold s an dcore s wer e constructe db y mixin g san dwit hflou r binders . Som e core s wer e mad e b y mixin g iro n oxid e wit ha n oil-base dmaterial , an dthe n hardene di n cor e ovens . Core s an dmold s wer e treate dwit hawater-base dzirco n flou r an ddy e mixtur e t o preven t th e molte n meta l fro merodin g them . Casting s wer e cleane d(b y mechanica l grinding , sho t blasting , o r

san dblasting ) an dheat

treated . Heat-treatin g consiste do f annealin g followe db y wate r o r oi l quenching . Fina l machinin g wa s performe deithe r a t th e Sit e o r a t th e customer' s shop , i f

needed . Som e part s require dX-ra y inspectio n o r certification . Durin g th e mid-1980s , th e souther n portio n o f th e Sit e wa s lease dt o Can-A mResourc e Grou p (Can-Am) . Can-A mconducte daspen t catalys t recyclin g operatio n usin g a n experimenta l process . Can-A mreportedl y obtaine dbetwee n 2,00 0 an d4,00 0 drum s o f spen t catalys t fro m chemica l plant s an drefinerie s locate dalon g th e Housto n Shi p Channel . B y 1988 , Can-A m cease doperation s an dth e store ddrum s o f spent catalys t wer e abandone do n th e Site . I n 1990 , MD I bough t

th e TESC O not e fro mTexa s Commerc e Bank . TESC O cease d operation s i n Februar y 1991 , an dMD I foreclose do n th e property . MD I reopene da s th e Sa n Jacint o Foundry (SJF ) o n Marc h1 , 1991 . SJ Fcontinue doperation s unti l abou t Jun e 1 , 1992 . MD I file dfo r

Chapte r 7 Bankruptc y i n th e U.S . Bankruptc y Cour t fo r th e Souther n Distric t

o f Texa s (Housto n District ) o n Ma y 20 , 1992 . Th e on-sit e facilitie s wer e demolishe da s asalvag eMan y Diversifie dInterests , Inc . Superfun dSite Recor do f Decisio nfo r

Operabl e Uni t

2 operatio nunde r

orde r o f th e U.S . Bankruptc y Cour t

betwee nMarc h199 5 an dJanuar y 1996 . 7. 2 Histor y o f

Federa l an dStat e Investigation s an dRemoval/Remedia l Action s Th e MD I sit e ha s ha dsevera l investigation s complete dove r aperio do f

year s t o determin e th e sourc e an dnatur e o f contamination . I n addition , severa l remova l action s hav e bee nconducte dt o remov e imminen t threats fro mlea dcontaminatio nt o protec t th e residents . Th e TRNC C progra mfile s fo r th e TESC O facility , an dlate r SJF , documente dfrequen t Texa s Clea nAi r

Ac t complianc e inspection s an dcomplain t investigation s conducte da t

th e facilit y fro mJanuar y 198 2 throug hOctobe r 1991 . Violation s documente ddurin g thi s perio d primaril y involve dvisibl e emission s o f particulat e matte r

fro mth e stack s an dvent s o f th e facility' s baghouses . O nJanuar y 23 , 1996 , TNRCC' s Pollutio nCleanu p Divisio ncollecte dsoi l sample s fro m fiv e residentia l propertie s i nth e MD I Residentia l Are aa s par t o f aScreenin g Sit e Inspectio n (SSI ) conducte dfo r

th e EPA' s Regio n6 Superfun dSit e Assessmen t Program . Concentration s o f lea di nsoi l rangin g fro m55 6 t o 1,17 0 mg/k g wer e foun di nal l fiv e residentia l yar dsoil s sample d b y TNRCC . I naddition , th e EP A collecte d10 0 soi l sample s fro mresidentia l propertie s withi n th e MD I Residentia l Are afro mFebruar y 199 6 throug hJun e 199 6 a s par t o f th e SSI . Th e SS I i s a ninvestigatio ntha t

i s use dt o gathe r

samplin g dat at o evaluat e potentia l release s o f hazardou s contaminant s an ddetermin e i f th e Site ma y b e eligibl e t o b e include do n th e Nationa l Prioritie s Lis t (NPL) . Fro mMa y 13 , 1998 , throug hJun e 26 , 1998 , th e TNRC C collecte dsoi l samples , whic h include dth e resamplin g o f

propertie s previousl y identifie db y th e EP A a s havin g soi l lea dlevel s betwee n40 0 an d50 0 mg/k g an dothe r areas . O n Decembe r

30 , 1998 , th e TRNC C submitte damemorandu mt o th e EP A requestin g approva l fo r

aTim e Critica l Remova l Actio na t th e MD I Sit e fo r

th e purpose s o f

th e remova l an d off-sit e disposa l o f

lea dcontaminate dsoi l fro mresidentia l propertie s nea r th e forme r MD I Site . Thi s reques t

wa s base do n th e 199 6 throug h199 8 investigation s conducte db y th e EP A an d TNRCC . Thi s remova l actio n wa s conducte dt o remov e surfac e soi l (t o amaximu mdeptho f 1. 5 fee t bgs ) wit hconcentration s o f

lea dtha t equale do r exceede d50 0 mg/k g fo r

8 9 residentia l propertie s mainl y locate dt o th e northan dwes t o f th e site . Thi s remova l actio nreduce dth e 1 exposur e o f

adult s an dchildre nt o lead . Followin g eac hremoval , TNRC C conducte d confirmatio nsamplin g t o ensur e tha t lead-contaminate dsoil s di dno t exten dbelo w th e 18-inc h bg s excavatio ndepth . Approximatel y 12,02 5 ton s o f soi l wer e removed , characterized , an d dispose do f a t permitte dlandfills , wit hsome o f th e soil s bein g take nt o ahazardou s wast e landfill , an dsom e o f

th e soil s take nt o aSubtitl e D landfill . Th e location s o f th e residentia l lot s wher e th e TNRC C remova l actio nwa s performe dar e presente do n Figur e 2 (Summar y o f EP A an dTNRC C Activities .Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 I n 199 8 an d1999 , th e PRP s performe da n extensiv e dru mremova l actio n wit hth e EPA' s oversight . Ove r

4,00 0 drums , containin g spen t refiner y an dpetrochemica l catalyst s fro mth e Can-A moperation , an dvisibl y contaminate dsoil s wer e remove dfro mth e Site . I n Januar y 2003 , th e EP A bega n th e Remedia l Investigatio n an dFeasibilit y Stud y (RI/FS ) fo r OU s 1 an d2 . Th e purpos e o f th e RI/F S wa s t o determin e th e natur e an dexten t o f contamination , an dt o gathe r sufficien t informatio n abou t

th e Sit e t o suppor t

a n informe dris k managemen t

decisio n regardin g th e mos t appropriat e long-ter mremedy . Th e primar y objectiv e o f th e soi l samplin g i n Operabl e Uni t (OU ) 2 wa s t o evaluat e th e distributio n o f lea di n soil s downwin do f

th e MD I Superfun dSite . Thi s wa s accomplishe db y firs t modelin g th e predicte d are ao f impac t (Slowdow n Area ) fro mth e Sit e tha t wa s determine dthroug hth e us e o f conservativ e assumption s (Tetr aTec h2003a) , an dthe ncollectin g sample s fro mth e propertie s withi n th e Slowdow n Area . An y impac t fro mblower s reporte dt o hav e operate do n th e eas t sid e o f th e Sit e ma y no t

hav e bee n full y accounte dfo r i n th e ai r dispersio n model ; therefore , propertie s eas t

o f Pres s Stree t

(off-sit e Eas t

Blowe r Area ) wer e als o include dwithi n th e O U 2 Stud y Area . A s aresul t

o f th e samplin g durin g th e RI/F S fo r th e Site , th e EP A discovere d5 9 residentia l areas , includin g hig hacces s areas , wit hlea dconcentration s equa l t o o r greate r tha n 50 0 mg/kg . Althoug hth e cleanu p goa l wa s se t a t 50 0 mg/kg , th e practica l cleanu p leve l wa s se t a t 46 3 mg/kg . Thi s lowe r

mor e conservativ e leve l too k int o accoun t

th e averag e relativ e standar d deviatio n (SD ) fo r

th e X-Ra y Fluorescenc e (XRF ) instrumen t o f 3 7 mg/kg . Fo r

simplicit y an d consistency , 50 0 mg/k g wil l b e use dthroughou t th e res t o f th e document . Th e EP A Remova l Actio n a t th e sit e bega n o n Jul y 15 , 2003 . EP A complete daremova l actio n a t 5 6 properties , whic hinclude dBlanch e Kels o Bruc e Elementar y School , th e Fift hWar d Multi-Servic e Communit y Center , achurch , an dresidentia l properties . Durin g Ma y an dJun e 2005 , asecon dEP A remova l actio n wa s performe da t fiv e propertie s wit hlea dconcentration s i n soi l greate r tha n th e cleanu p leve l o f

50 0 mg/k g tha t

wer e no t previousl y addresse ddurin g th e 200 3 EP A remova l action . Thre e o f th e fiv e propertie s wer e no t addresse ddurin g th e 200 3 EP A remova l actio n becaus e owne r acces s wa s no t

obtaine dt o conduc t remova l activitie s a t

th e properties . Th e othe r

tw o propertie s wer e addresse ddurin g th e 200 3 EP A remova l action ; however , no t al l soil s wit hlea dconcentration s greate r tha nth e cleanu p leve l o f

50 0 mg/k g ha dbee n removed . A t th e conclusio n o f

th e 200 3 an dJun e 200 5 EP A remova l actions , th e Agenc y complete datota l o f

5 9 residentia l properties , includin g hig hacces s areas , locate dt o th e eas t an d northo f th e site . Thes e remova l action s wer e conducte dt o remov e surfac e soi l wit h concentration s o f

lea dthat equale do r

exceede dth e 50 0 mg/k g actio n leve l t o amaximu mdept h o f 1. 5 fee t belo w groun dsurfac e fo r

th e purpos e o f

reducin g th e exposur e o f

adult s an dchildre n t o lead . Confirmatio n samplin g wa s conducte dt o ensur e tha t lead-contaminate dsoil s di d no t exten dbelo w th e botto mo f th e excavation . Th e contaminate dsoi l remove dfro mth e residentia l propertie s wa s stockpile dan dcovere dwithi n th e fence dpropert y o f th e forme r 8Man y Diversifie dInterests , Inc . Superfun dSite Recor do f Decisio n fo r

Operabl e Uni t

2 foundr y (OU1) . More detaile dinformatio nconcernin g th e 200 3 an d200 5 EP A remova l action s i s availabl e i n th e fina l report s submitte dt o EP A b y it s START contractor , Westo n (2004 ; 2005) , whic hi s include di n th e Administrativ e Record . Th e location s o f

th e propertie s wher e th e EP A an dTNRC C remova l actio n wer e performe dar e presente do n Figur e 2 (Summary o f EP A an dTNRC C activities) . 7. 3 Histor y o f

CERCL A Enforcemen t

Activitie s O n Septembe r

25 , 1998 , th e EP A signe daRemova l Actio n Memorandu mt o addres s th e remova l o f th e reportedl y 5,35 5 deterioratin g drum s o f wast e fro mth e Sit e an d100,00 0 yd 3 o f contaminate don-sit e soils . O n Septembe r

28 , 1998 , th e EP A issue d"104(e ) informatio n reques t letters " t o 4 0 owners , operators , and/o r

generator s associate dwit hth e Site . O n Marc h10 , 1999 , th e EPA' s Regio n 6 Emergenc y Respons e Branc hbega n "stabilization " effort s a t

th e Sit e t o mitigat e th e potentia l fo r th e off-sit e migratio n o f contaminant s associate dwit hnearl y 60 0 leakin g drum s o f liqui dhazardou s wast e abandone don site . O n Apri l 9 , 1999 , th e EP A hel dameetin g wit hth e PRPs . Th e PRP s wer e offere dth e opportunit y t o conduc t

th e dru mremova l actio n an dth e EP A provide dcopie s o f al l th e evidenc e o f th e PRPs ' involvemen t

wit hth e Site . A Draf

t Administrativ e Orde r

o n Consen t

wa s provide d t o al l th e parties , an dthe y wer e give n 7 calendar day s fro mth e dat e o f

th e meetin g t o notif y th e EP A o f thei r inten t t o conduc t th e remova l action . Non e o f th e PRP s accepte dth e EPA' s offe r t o voluntaril y conduc t

th e remova l action . O n May 18 , 1999 , th e EP A issue dUnilatera l Administrativ e Order s (UAO ) directin g 1 1 PRP s t o conduc t

aremova l actio n a t

th e Site . I n respons e t o th e UAO , th e PRP s forme da"PRP Group " t o addres s th e drumme dwaste s presen t a t th e Site . O n Jun e 8 , 1999 , th e EPA sent th e Firs t Amende dUA O to 1 0 additiona l PRP s associate d wit hth e Site . Thes e PRP s wer e adde dt o th e UA O i n respons e t o th e informatio nmad e availabl e t o th e EP A b y th e othe r

PRPs . Thi s UA O encourage dth e recipient s wishin g t o compl y wit hth e UA O t o coordinat e wit hth e PR PGrou p i n addressin g th e dru mremova l action . O n Jun e 17 , 1999 , aconferenc e wa s hel dfo r th e secon dgrou p o f

PRP s receivin g th e Amende dUAO . Seve n o f

th e nin e additiona l PRP s wer e represente da t thi s meeting . O n Jun e 23 , 1999 , i n accordanc e wit hth e UAO , th e PR PGrou p submitte dt o th e EPA , fo r revie w an dapproval , aRemova l Actio n Work Pla n an daHealt h& Safet y Pla n fo r th eMan y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 Removal Actio n t o addres s th e drumme dwaste abandone dwithi n th e fence dboundarie s o f th e Sit e (O U 1) . Th e resul t

o f thi s actio n wa s th e bul k

containerizing , sampling/analysis , an d transpor t fo r off-sit e disposa l o f

ove r 4,00 0 drum s an dassociate ddebri s an dvisuall y contaminate dsoils . Thi s actio n wa s complete do n Novembe r 23 , 1999 . O n Ma y 6 , 2002 , acombinatio n "special notice " an d"demand " lette r wa s sen t t o th e PRP s fo r th e conduc t

o f th e RI/FS . O n Decembe r

26 , 2002 , afedera l lie nwa s place do n th e MD I property . O n Januar y 17 , 2003 , th e Harri s Count y Cler k registere dth e EPA' s federa l lie no n th e Sit e propert y (O U 1 ) an d notifie dMD I an dTESC O o f th e lien . Thi s lie ni s fo r

respons e cost s tha t

th e EP A ha s incurre d an dwil l incu r

i nth e future . Th e PRP s wh o performe dth e 199 8 an d199 9 on-sit e (O U 1 ) dru mremova l actio nwer e no t involve di n th e EPA' s an dTCEQ' s effort s t o investigat e an dremediat e th e O U 2 residentia l soil s an dHAAs . Th e dru mremova l actio n involve dth e catalys t store don-sit e withi nth e forme r foundry' s boundaries . Th e catalys t materia l di dno t

impac t th e off-sit e (O U 2 ) area s o f

th e Site . O n Marc h10 , 2004 , th e EP A me t wit hsevera l prospectiv e purchaser s intereste di n th e Sit e t o discus s th e propose dpla n fo r O U 1 an dth e result s o f

th e RI/FS . O n Marc h22 , 2005 , th e Bankruptc y Truste e fo r th e MD I property , auctione dth e 3 6 acre s o f on-sit e propert y (OU1 ) fo r

atota l sale s pric e o f

$ 7,897,539.00 . Th e winnin g bidder , 5th War dInvestments , Ltd , i s schedule dt o clos e o n th e propert y betwee n 30-6 0 days . A t th e closing , th e buye r

wil l deliver

either aletter signe db y a n authorize dEP A representativ e tha t financia l assuranc e i n th e amoun t o f $ 6,642,53 9 wa s receive do r th e cas hequivalent . Th e buye r i s currentl y i n negotiation s wit hth e EP A an dha s th e optio n t o eithe r conduc t th e remedia l desig n an dclean-u p o r

submi t th e cas hequivalen t

t o EP A fo r

th e clean-u p fo r

OU1 . 8. 0 COMMUNIT Y PARTICIPATIO N Thi s sectio n o f

th e RO D describe s th e EPA' s communit y involvemen t activities . Th e EP A ha s bee n activel y engage di n dialogu e an dcollaboratio n wit hth e affecte dcommunit y an d ha s strive dt o advocat e an dstrengthe n earl y an dmeaningfu l communit y participatio ndurin g th e EPA' s remedia l activitie s a t

th e Site . Thes e communit y participatio n activitie s durin g th e remed y selectio n proces s mee t th e publi c participatio n requirement s i n CERCL A an dth e NCP . 8. 1 Communit y Involvemen t Pla n Th e Communit y Involvemen t Pla n (CIP ) fo r

th e Sit e wa s prepare di n Novembe r 1999 . Thi s CI Pspecifie s th e communit y involvemen t activitie s that

th e EP A ha s undertaken , an dwil l continu e t o undertake , durin g th e remedia l activitie s planne dfo r th e Site . 1 0Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 8. 2 Technica l Assistan t

Gran t A Technica l Assistan t

Gran t (TAG ) wa s awarde dt o th e 5 t hWar dMother s fo r Clea n Ai r o nSeptembe r

2 , 2001 . Th e purpos e o f

aTA Gi s fo r

aloca l citizens ' grou p t o secur e th e service s o f atechnica l adviso r

(TA ) t o increas e citize n understandin g o f informatio ntha t

wil l b e develope dabou t

th e Sit e durin g th e Superfun dprocess . Throughou t th e RI/F S process , th e EP A ha s communicate dwit hth e TA Gan dth e TA , Soun dEnvironmenta l Solutions , t o disseminat e document s (statemen t

o f work fo r th e conduc t

o f th e RI/F S a s wel l a s th e RI/F S documents ) fo r revie w an dcomment . 8. 3 Superfun dRedevelopmen t Initiativ e I n Septembe r

1999 , th e Mayor' s Offic e o f Environmenta l Polic y (Cit y o f Houston ) receive daSuperfun dRedevelopmen t Initiativ e (SRI ) Grant . Th e Cit y o f Housto n wa s selecte d t o receiv e on e o f

1 0 pilo t grant s bein g awarde dnationwid e unde r th e EPA' s innovativ e SRI . Th e Cit y receive d$100,00 0 t o conduc t areus e assessmen t

an dpubli c outreac ht o hel p determin e ho w bes t t o redevelo p th e forme r

foundr y (MDI , TESCO ) propert y i nth e Fift hWard . Th e "Reus e Assessmen t Report, " issue db y th e Cit y o f Housto n i n Septembe r

2002 , recommende dtha t

th e fence dboundarie s o f

th e Site (O U 1 ) shoul db e redevelope dfo r mixe dresidentia l an dligh t commercia l use . 8. 4 Communit y Meeting s Th e EP A an dTCE Q hav e conducte dnumerou s communit y meeting s durin g th e cours e o f th e RI/F S fo r

th e Sit e an dhav e provide dpubli c notice s o f thes e meeting s i norde r

t o encourag e th e community' s participation . Th e EP A ha s als o bee n invite dt o severa l meeting s wit hloca l groups . Th e followin g i s abrie f summar y o f

th e communit y meeting s hel db y th e EPA . O n Jun e 9-13 , 2002 , th e EPA' s staf f conducte da n extensiv e "Door-To-Doo r Communit y Outreac hCampaign " i na neffor t t o infor mth e Fift hWar dresident s o f th e EPA' s curren t

an d futur e remedia l activitie s a t

th e Site , gathe r

informatio n abou t

th e Site , an dprovid e th e communit y witha nopportunit y t o mee t wit hth e EP A staf

f responsibl e fo r

th e activitie s a t

th e Site . Th e Sit e Teamconducte dinterview s wit hove r 8 0 resident s o f

home s locate dwithi na1/4 mil e radiu s o f

th e Site , hel dapubli c meeting , interviewe dsevera l forme r employee s o f

th e TESC O Site , an dme t

wit hloca l communit y leader s an dbusines s owners . Severa l communit y leader s an dmember s o f

th e "Mother s fo r

Clean Air " organizatio n (TA Gfo r th e site ) participate d i nth e extensiv e outreac heffort . O n Novembe r

19 , 2002 , acommunit y meetin g wa s hel da t th e Blanch e Kels o Bruc e Elementar y School , whic hi s locate don e bloc k fro mth e Site . A simultaneou s translato r wa s provide dfo r

th e Spanis hspeakin g communit y members . Th e purpos e o f thi s meetin g wa s t o discus s th e EPA' s planne dactivitie s durin g th e RI/F S fo r th e Site . 1 1Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 O nJun e 24 , 2003 , anothe r

communit y meetin g wa s hel da t th e loca l Fift hWar dMulti

Servic e Center . A simultaneou s translato r wa s provide dfo r

th e Spanis hspeakin g communit y members . Th e purpos e o f

thi s meetin g wa s t o discus s th e planne dremova l an dremedia l action s fo r th e Site . Th e EP A coordinate dparticipatio n b y th e Cit y o f Housto n Healt han dHuma n Service s Department , th e Texa s Departmen t o f Health , an dth e Agenc y fo r

Toxi c Substance s an d Diseas e Registr y t o addres s th e community' s healt hconcerns . Th e City' s healt hdepartmen t conducte dchil dblood-lea dscreenin g durin g th e cours e o f th e meeting . A publi c meetin g wa s hel do nFebruar y 26 , 2004 , a t 7 p ma t th e Fift hWar dMulti-Servic e Cente r t o presen t th e propose dpla n fo r

Operabl e Uni t

1 (On-Sit e Soil s an dGroun dWater) . Ora l an dwritte n comment s wer e accepte da t th e meeting . Th e EP A issue daRecor do f

Decisio n fo r

O U 1 o nJul y 30 , 2004 , base do ncommunit y input . A communit y meetin g wa s hel do nAugus t 19 , 2004 , a t

7 p ma t th e Fift hWar dMulti

Servic e Cente r

t o discus s th e Selecte dRemed y fo r O U 1 wit hth e community . Th e EP A establishe daloca l Sit e Repositor y t o provid e th e publi c alocatio nnea r th e communit y t o revie w an dcop y backgroun dan dcurren t informatio n abou t

th e Site . Th e Sit e Repositor y i s locate di n th e library a t th e Fift hWar dMulti-Servic e Center . Numerou s fac t

sheets , translate dint o Spanish , hav e bee n prepare ddurin g th e plannin g an dimplementatio n o f

th e RI/FS . Thes e fac t

sheet s wer e place da t

th e Site' s repositor y an d distribute dt o thos e community member s o n th e mailin g lis t maintaine db y th e EPA . O nAugus t 3 , 2005 , th e EP A me t

wit hth e TA Gt o discus s th e statu s o f sit e an dt o discus s th e finding s documente di nth e RI/F S document s fo r OU2 . 8.4. 1 Communit y Meetin g fo r th e Propose dPla n fo r

O U 2 O nAugus t 3 , 2005 , th e EP A publishe dadvertisement s i nthre e newspaper s (Housto n Chronicle , E l Dia , an dth e Africa n America n New s an dIssues ) i nth e Housto n are ato : 1 ) notif y resident s o f

th e publi c commen t

perio dfo r th e propose dpla n an dspecif y th e mailin g addres s t o submi t comments , 2 ) notify resident s o f th e locatio n o f

th e repositor y t o revie w th e document s i n th e Administrativ e record , an d3 ) notify resident s o f th e upcomin g publi c meetin g fo r th e propose dplan . I n addition , EP A maile dafac t shee t summarizin g highlight s o f

th e propose d pla nt o al l resident s o nth e Sit e mailin g lis t a s wel l a s maile dapostcar dt o remin dresident s o f th e dat e an dtim e fo r

th e publi c meeting . O n Augus t 16 , 2005 , th e EP A hel dapubli c hearin g t o discus s th e propose dpla nan dt o accep t an y oral comments . 1 1 member s o f th e community , includin g th e Technical Adviso r fo r th e TA Gattende dthi s meeting . A transcrip t o f thi s meetin g an dth e comment s receive ddurin g th e publi c commen t

perio dca n b e foun di n th e Administrativ e Recor d(Appendi x C) . Th e

1 2Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 Agency' s respons e t o comment s ar e include di nth e Responsivenes s Summary , whic hi s par t o f thi s ROD . Representative s fro mothe r Stat e an dlocal office s wh o attende dth e Publi c meetin g includin g th e Chie f

o f Staf f fo r Stat e Hous e representativ e Harol dV . Button , Jr. , th e Cit y o f Houston' s Departmen t

o f Healt han dHuma n Service s (HDHHS , Childhoo dLea dPoisonin g Preventio nProgram) , th e Cit y o f Housto n Housin g Authority , an dth e Bankruptc y Trustee s fo r th e MD I site . 9. 0 SCOP E AN D ROL E O FOPERABL E UNI T O RRESPONS E ACTIO N Th e ter m"Operabl e Unit " (OU ) mean s adiscret e actio n tha t comprise s a n incrementa l ste p towar dcomprehensivel y addressin g asite . Th e cleanu p o f asit e ca n b e divide dint o a numbe r o f OUs , dependin g o n th e complexit y o f th e problem s associate dwit hasite . OU s ma y addres s geographica l portion s o f asite , specifi c sit e problems , o r initia l phase s o f

a naction , o r ma y consis t

o f an y se t o f action s performe dove r

tim e o r an y action s tha t

ar e concurren t

bu t locate di n differen t

part s o f asite . OU s wil l no t

imped e .implementatio n o f

subsequen t

actions , includin g fina l actio n a t

asite . Th e EP A ha s divide dth e Sit e int o thre e Operabl e Units . 9. 1 Operabl e Uni t

1 (On-Sit e Soil s an dGroun dWater ) O U 1 consist s o f

th e "On-Sit e Soil s an dGroun dWater " (e.g. , th e are awithi n th e fence d boundar y o f

th e Site) . Th e EP A issue daRecor do f Decisio n fo r

O U 1 o n Jul y 30 , 2004 . Thi s Recordo f Decisio n ca n b e foun di n th e Administrativ e Record . 9. 2 Operabl e Uni t

2 (Off-Sit e Residentia l Soil s an dHig hAcces s Areas )

. O U 2 consist s o f

th e "Off-Sit e Residentia l Yard s an dHig hAcces s Areas " surroundin g th e site . OU 2 i s th e subjec t

o f thi s Recor do f

Decision . Th e boundarie s o f OU 2 ar e show n o n Figur e 3 . Th e boundarie s fo r

OU 2 wer e base do n ai r

modeling . Ai r

qualit y impac t

modelin g wa s conducte dt o predic t

wher e (1 ) particulat e matter

fro mhistorica l stac k

emission s woul dhav e bee n deposite dont o th e groun dsurfac e an d(2 ) soi l lea dconcentration s ma y potentiall y mee t o r excee dth e EP A Regio n 6 MSSL s fo r heav y metal s associate dwit hfoundr y activities . Mor e detai l concernin g th e ai r

modelin g can b e foun di n Appendi x Gi n th e R I report (Tetr aTech , 2005) . EP A identifie dapproximatel y 41 8 propertie s withi n th e O U 2 Stud y Are a(Slowdow n Are aan dEas t

Blowe r Area ) fo r potentia l evaluatio n (Se e Figur e 4) . O f thos e 41 8 properties , 18 1 propertie s wer e evaluate dan dsample ddurin g th e 200 3 EP A RI ; approximatel y 10 6 propertie s wer e sample db y EP A an dth e TNRC C fro m199 6 throug h1998 ; 11 2 propertie s involve d 1 3Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 property owner s that

denie daccess , were unresponsive , o r coul dno t b e contacted ; an d1 9 propertie s wer e no t

evaluate ddu e t o thei r

commercial/industria l status . Therefore , th e tota l numbe r

o f residentia l propertie s include di n th e OU 2 Stud y Are a whic hthi s RO D addresse s i s 28 7 propertie s . Thi s numbe r i s base do n th e 18 1 propertie s evaluate db y EP A durin g th e 200 3 R I an dth e 10 6 propertie s evaluate dpreviousl y prio r t o thi s R I b y TNRCC/EPA . Th e 11 2 propertie s tha t coul dno t b e evaluate ddu e t o th e owner s no t grantin g sit e acces s wil l b e evaluate dunde r OU3 . Th e distributio n o f

lea di nsoil s withi n th e O U 2 Stud y Are aha s bee n characterized . Wit h th e exceptio n o f

th e Kell y Villag e housin g complex , al l residentia l yard s an dhigh-acces s area s wit hlea dconcentration s i nsoil s equa l t o o r greate r tha n 50 0 part s pe r

millio n(o r

mg/kg ) establishe dfo r

th e O U 2 Stud y Are ahav e bee n remediate di nth e for mo f aremova l action , whereb y th e contaminate dsoil s hav e bee n remove dan dreplace dwit hclea n backfill . Th e EP A believe s tha t

al l th e remova l actions , whic hwere complete dprio r t o thi s ROD , addres s al l o f

th e propertie s tha t

coul dhav e bee n affecte db y th e ai r emission s o f

particulate s containin g lea dfro mth e forme r foundr y an dfo r

whic hth e EP A wa s grante dacces s fo r sampling . 9. 3 Operabl e Uni t

3 (Residentia l Crawlspaces , Kell y Villag e Housin g Comple x an d Thos e Residentia l Area s No t Addresse dunde r

Operabl e Uni t

2 ) OU 3 wil l consis t

o f th e crawlspace s underneat hth e house s i n th e OU 2 Stud y Area , th e Kell y Villag e Housin g Comple x ( ahig hacces s area) , an dth e 11 2 propertie s tha t EP A coul dno t gai n sit e acces s t o sample . Th e EP A ha s determine dtha t ther e wa s no t

enoug hdat at o mak e adecisio n regardin g th e crawlspace s durin g th e 200 3 RI . Ther e ar e potentiall y 39 9 residentia l home s i n th e Stud y Are a an dadeterminatio n wil l b e mad e regardin g th e numbe r o f home s tha t

hav e crawlspaces . I n addition , th e EP A wil l nee dt o ensur e tha t ou r ris k scenari o model s th e typ e o f

exposur e tha t

a n individua l wil l encounte r

fo r crawlspaces . Specifically , EP A wil l nee dt o investigat e severa l possibl e exposur e scenarios . Fo r thes e reasons , EP A wil l b e conductin g additiona l studie s regardin g th e crawlspace s unde r OU3 . Th e EP A wa s no t

abl e t o sampl e al l residentia l propertie s withi n th e Stud y Are adu e t o no t bein g abl e t o contac t

th e owner . EP A canno t

verif y no r determin e i f

aris k i s presen t fo r thes e 11 2 residentia l yard s becaus e sit e acces s wa s no t grante dt o sampl e th e properties . Th e EP A propose s t o sen dathir droun do f letter s t o th e owner s (i f

known ) a s wel l a s provid e notificatio nt o th e Harri s County clerk' s offic e t o documen t tha t th e propert y wa s no t

sampled . Owner s wil l b e give n asecon dopportunit y t o hav e thei r propert y sample dwhe n EP A begin s th e investigatio n fo r

OU3 . 1 4Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 Lastly , EP A wa s no t

abl e t o obtai n sit e acces s fro mth e Cit y o f Housto n Housin g Authorit y t o conduc t

aremova l actio n a t

th e Kell y Villag e Housin g Complex . Th e EP A wil l b e workin g wit hth e Housin g Authorit y t o presen t option s t o ensur e tha t

futur e activitie s d o no t redistribut e th e contaminate dsoi l belo w 0. 5 fee t t o th e surface . Thes e option s wil l b e addresse d i nth e RO D fo r

OU3 . 10. 0 SIT E CHARACTERISTIC S 10. 1 Demographic s an dCurren t Lan dUs e Surroundin g lan dus e i s amixtur e o f residentia l an dindustrial . Residentia l area s ar e locate dadjacen t

t o th e site . There ar e a n estimate d94 2 housin g unit s an dapproximatel y 2,75 6 peopl e withi n !/ 2 mil e o f

th e sit e (EP A 2003d) . Blanch e Kels o Bruc e (Bruce ) Elementar y Schoo l i s locate dadjacen t

t o an dwes t

o f th e site . 10. 2 Soil s Soil s i n th e O U 2 Stud y Are awer e classifie da s part o f th e Soi l Surve y o f

Harri s County , Texas . I n general , th e soil s ar e o f th e Lak e Charles-Bernar dAssociation . Thes e soil s ar e considere d"somewhat

poorl y drained , ver y slowl y permeable , claye y an dloamy" . Th e O U 2 Stud y Are ai s mappe da s Urba n Lan d(Ur ) meanin g tha t th e sit e i s primaril y fil l material , whic h exclude s furthe r

classificatio n (USD A 1976) . 10. 3 Regiona l Geolog y an dHydrogeolog y Th e MD I sit e i s locate dwithi n th e Texa s Coasta l Plai n region . Th e Texa s Coasta l Plai n regio n i s underlai n b y thousand s o f fee t o f san dan dcla y (coasta l plain ) deposits , whic har e mostl y unconsolidated . Th e tw o uppermos t

regiona l aquifer s presen t

i nth e Houston-Galvesto n area , th e Chico t an dunderlyin g Evangeline , ar e compose do f alternatin g bed s o f

clay , silt , sand , an dgrave l deposite di n aserie s o f

fluvial-deltai c environment s tha t wer e affecte db y rapi dchange s i n sedimentatio n rate , regiona l subsidenc e o f th e Gul f o f Mexico , an dchange s i n se aleve l sinc e a t leas t th e en do f th e Tertiary (Tetr aTec h2005) . Residence s withi n clos e proximit y t o th e sit e receiv e thei r potabl e wate r

fro mth e Cit y o f Housto n wate r

suppl y (E& E1998) . Becaus e th e focu s o f th e O U 2 R I wa s surfac e soil s only , groun dwate r

i s no t addresse dunde r

thi s RO D fo r

O U 2 . Th e investigatio n o f

O U 1 determine d tha t groun dwate r

impact s associate dwit hth e foundr y operation s d o no t exten dbeyon dO U 1 . Th e Recor do f

Decisio n fo r

O U 1 identifie s th e Selecte dRemed y fo r th e groun dwate r contaminatio ndiscovere dwithi n th e fence dboundarie s o f th e Site . Fo r

additiona l informatio n concernin g OU1 , refe r

t o th e Administrativ e Record .

1 5Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 10. 4 Climat e an dWin dDirectio n Th e site' s proximit y t o Galvesto n Ba y an dth e Gul f o f Mexic o affect s th e climat e area , resultin g i n mil dweathe r

condition s an da n averag e dail y temperatur e o f 7 0 T . Tw o principa l win dregime s ar e presen t

i n th e Texa s Coasta l Zone : southeasterl y wind s fro mMarc hthroug h November , an dprincipall y northerl y wind s fro mDecembe r throug hFebruary . Prevailin g wind s i nHarri s Count y ar e fro mth e south-southeast . Th e highes t averag e win dspeed s generall y occu r durin g April . Th e stronges t

seasona l wind s i n th e are aar e produce db y winte r pola r ai r masse s arrivin g fro mth e north , producin g win dspeed s o f 2 0 t o 4 0 mile s pe r

hou r ove r atim e perio do f 1 2 t o 3 6 hour s (Bomar

1983) . 10. 5 Soi l Samplin g Strateg y Th e soi l samplin g strateg y fo r th e residentia l soil s an dHAA s (i.e. , th e stud y area ) wa s t o determin e th e distributio n o f

metal s concentration s i nnear-surfac e soils ; specifically , lea d deposite da s aresul t

o f dispersio n an ddepositio n o f ai r emission s fro mth e historica l foundr y operations . Th e EP A conducte dconservativ e ai r dispersio n modelin g an dcommunit y interview s t o determin e th e spatia l boundarie s o f th e stud y are atargete dfo r

sampling . I nadditio n t o th e standar devaluatio n o f th e natur e an dexten t

o f contaminatio nthroug h samplin g an danalytica l techniques , additiona l analyse s wer e performe di norde r t o evaluat e othe r potentia l source s o f

contaminatio n i n th e residentia l yard s an dHAA s o f th e Site . Thes e additiona l analyse s include dacompariso n o f th e rati o o f

certai n metal s i n soil , evaluatio no f scatte r plots , an dth e us e o f

microscopi c techniques . 10.5. 1 Soi l Investigatio n - Ai r Dispersio n Modelin g Conservativ e ai r

dispersio n modelin g wa s conducte dt o predic t wher e particulat e matter , containin g lead , fro mth e historica l foundr y emission s coul dhav e bee n deposite dont o th e groun d surfac e an dwher e lea dconcentration s i nth e soi l coul dpotentiall y excee daconservativ e screenin g leve l o f

40 0 mg/kg . Th e modele ddepositiona l area , o r stud y area , extendin g fro mth e forme r foundry' s boundar y t o th e 0. 8 gra

mpe r squar e mete r

pe r year (g/m 2 -year ) isoplet hwa s identifie da s th e priorit y are afo r

off-sit e residentia l sampling . A nisoplet hi s aline(s ) o nama p represente db y mor e tha n on e sampl e poin t

exhibitin g th e same analyt e (e.g. , lead ) concentration . Thi s isoplet h identifie dth e are apredicte dt o hav e soi l lea dconcentration s equa l t o th e screenin g leve l o f 40 0 mg/kg . Blower s wer e reporte dt o hav e operate di nth e easter n par t o f th e forme r foundry . Th e stud y are awa s expande dt o includ e thi s area , sinc e i t ma y no t hav e bee n full y accounte dfo r i n th e modelin g (Se e Figur e 4) . Soi l sample s wer e the n collecte dfro meac hresidentia l yar dan d HA A locate dwithi n th e stud y are aan danalyze dfo r metals , includin g lead . 1 6Man y Diversifie dInterests , Inc . Superfun dSite Recor do f Decisio n fo r

Operabl e Uni t

2 10.5. 2 Soi l Investigatio n- Samplin g Methodolog y Th e off-sit e soi l investigatio nconsiste do f th e collectio no f

five-poin t composit e shallo w soi l sample s fro mfou r

dept hintervals . Thi s are aconsiste do f 18 1 residentia l yard s an dHAAs , includin g th e Blanch e Kels o Bruc e Elementar y School , Fift hWar dMulti-Servic e Center , an d several churches . Fo r eac hlocation , soi l sample s wer e collecte dwit hhan dauge r equipmen t

o r aslid e hamme r fro mfou r dept hintervals : 0 t o 0.0 8 foo t ( 1 inch) , 0 t o 0. 5 foot , 0. 5 t o 1. 0 foot , an d1. 0 t o 1. 5 fee t bgs . XR Fan dlaborator y analytica l technique s wer e the nuse dt o quantif y th e concentration s o f

lea dan dothe r

metal s i nth e soils . Eac hsample dresidentia l "yard " represente da n are aapproximatel y equa l t o 2,50 0 squar e feet . Thes e 2,500-square-foo t "yards " wer e selecte da s th e exposur e are afo r futur e resident s i n area s anticipatedt o b e conduciv e t o hig hactivit y b y futur e chil dresident s (EP A 2003a) . I f th e residentia l yar dwa s small , onl y on e sampl e wa s collecte dove r a nare acoverin g bot hfron t

an d bac k yard s (Tetr aTec h2005) . Th e sam e methodolog y wa s use dfo r vacan t lot s i n th e residentia l areas . Becaus e multi-famil y housin g area s ma y hav e large r area s o f possibl e hig hactivity , thes e large r area s wer e subdivide dint o approximatel y 2,500-square-foo t subareas , eac ht o b e counte d a s adiscret e residentia l "yard, " althoug hthe y migh t b e par t o f alarge r residentia l parcel . I nadditio nt o residentia l properties , Tetr aTec hsample dschools , publi c parks , churchyards , an dothe r

locations . A s wit hth e samplin g conducte da t th e residentia l locations , fo r eac h2,500-square-foo t

"high-acces s area " (equivalen t t o aresidentia l yard) , on e 5-poin t composit e sampl e wa s collecte dfo r eac hsampl e dept hinterval . 10. 6 Natur e an dExten t o f Soi l Contaminatio n Over th e cours e o f

th e RJ , mor e tha n1,60 0 soi l sample s wer e collecte dan danalyze dfo r metal s an dothe r

contaminant s i nth e soil . Th e R I focuse do nsurfac e soil , whic hi s define da s soil s that exten dt o 1. 5 fee t

bgs . Th e R I Repor

t fo r O U 2 reveale dtha t

th e potentia l contaminant s o f concern(COPCs ) i n surfac e soi l wer e arsenic , lead , an dantimony ; wit hlea dbein g th e primar y contaminan t

o f concern (COC) . Antimon y wa s foun di n on e off-sit e sampl e a t aconcentratio no f

48. 1 mg/k g a t

adept ho f 0-0. 5 feet . However , sinc e thi s locatio nwa s remediate ddurin g th e 200 3 EP A remova l action , antimon y wa s eliminate dfro mfurthe r evaluatio nan dwil l no t

b e furthe r addresse di nthi s ROD .

1 7Man y Diversifie dInterests , Inc . Superfun dSit e

10.6. 1 Lea dContaminatio n Recor do f Decisio n fo r

Operabl e Uni t

2
37 7 soi l sample s wer e analyze dfo r lea dfo r eac ho f th e interval s fro m0 t o 0.0 8 foo t bgs , 0 t o 0. 5 foo t

bgs , an d0. 5 t o 1. 0 foo t

bg s intervals . 36 8 soi l sample s wer e analyze dfo r lea dfro m th e 1. 0 t o 1. 5 fee t

bg s interval . Tabl e 1 belo w provide s arang e o f th e lea dconcentration s b y depth . Th e maximu mdetecte dconcentration s o f lea di n th e soi l fro m0 t o 0.08 , 0 t o 0.5 , 0. 5 t o 1.0 , an d1. 0 t o 1. 5 fee t

bg s wer e 1720 , 1899 , 2779 , an d629 8 mg/kg , respectively . Tabl e 1 : Lea dContaminatio n b y Dept h Dept h

0-0. 8 fee t 0-0. 5 fee t 0.5

- 1. 0 fee t 1.0

- 1. 5 fee t Non-Detec t

2 5 sample s 1 8 sample s 5 1 sample s 11 8 sample s Non-Detec t t o 20 0 mg/k g
17 3 sample s 19 5 sample s 25 3 sample s 22 0 sample s 20 1 t o 39 9

mg/k g
1 1 0 sample s 10 9 sample s 5 3 sample s 1 6 sample s 40 0 mg/k g

(residentia l screenin g level ) 6 9 sample s 5 5 sample s 2 0 sample s 1 4 sample s 10.6. 2 Arseni c Contaminatio n Th e R J reveale dtha t

arseni c wa s aCOPC . Th e arseni c contaminatio n range dfro mnon detec t t o 23. 1 mg/kg . Arseni c wa s detecte di n 8 sample s (representin g 6 locations ) abov e EPA' s residentia l screenin g level s o f 0.3 9 mg/k g an dabov e backgroun d(5. 9 mg/kg) .

1 8Man y Diversifie dInterests , Inc . Superfun dSite

Tabl e 2 : Arseni c Contaminatio n Recor do f Decisio n fo r

Operabl e Uni t

2 Locatio n I D 7 2 (Residential ) 14 0 (Residential ) 8 7 (Residential ) Bruc e Elementar y Locatio n 1 Bruc e Elementar y Locatio n 6 Bruc e Elementar y Locatio n 9 Bruc e Elementar y Locatio n 9 Bruc e Elementary Locatio n 9 Concentratio n (mg/kg )

14. 1 6. 1 9. 7 6. 2 7. 9 7. 8 15. 0 10. 1 Dept h

0-0. 5 f t 0

- 0. 5 f t 0.5

- 1.0f t 0.5

- 1.0f t 0

- 0. 5 f t 0

- 0. 5 f t 0. 5 - 1 f t 1.0-1 . 5 f t Remova l Actio n a t

Dept h Ye s Ye s N o Ye s N o N o N o N o

10.6. 3 Source s o f

Lea dContaminatio n I nadditio n t o th e evaluatio n o f th e natur e an dexten t

o f soi l contamination , additiona l analyse s wer e performe di norde r t o asses s th e potentia l sourc e o f contamination . Th e thre e method s employe dwer e a nevaluatio n o f th e rati o o f

th e metal s i nsamples , astatistica l analysi s (scatte r plots) , an dmicroscop y analysis . Sourc e Evaluatio n Usin g Rati o o f Metal s i n Soil s Fiv e sample s o f

ba g hous e wast e wer e collecte don-sit e an danalyze dfo r tota l metal s an d toxicit y characteristi c leachin g procedur e (TCLP ) metals . Thes e sample s wer e use da s astandar d t o compar e wit hoff-sit e results . Th e premis e o f thi s assessmen t

i s tha t i norde r fo r meta l concentration s i noff-sit e soil s t o b e full y attributabl e t o on-sit e activities , th e ratio s o f th e metal s shoul db e similar . Lead , chromium , an dmolybdenu mwer e selecte da s heav y metal s tha t ar e likel y t o b e associate dwit hfoundr y wastes . Rati o o f th e metal s i n ba g hous e an dOU 1 on-sit e sample s ar e significantl y similar ; suggestin g tha t th e meta l concentration s on-sit e ar e attributabl e t o historica l release s fro mth e forme r foundry . Th e ratio s fo r

thes e metal s i n OU 2 off-sit e samples , ar e significantl y different , suggestin g tha t ther e ar e othe r

probabl e source s o f

lea d contamination . Tw o likel y source s ar e tai l pip e emission s fro mautomobile s durin g th e perio d 1 9Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 whe n leade dgasolin e wa s i n us e (pr e mid-1970s) , a s wel l a s lead-base dpain t fro mresidences . Lead-base dpain t

i s awell-know n sourc e o f

lea di n soils , an di s alikel y contributor , give nth e fac t tha t house s i n th e are aar e reporte dt o hav e undergon e lead-base dpain t abatemen t

an d remova l activities . Scatte r Plot s o f Metal s B y Locatio n Meta l result s fro mth e off-sit e location s an dbackgroun darea s hav e adistinctl y differen t distributio n tha n th e on-sit e locations , indicatin g that th e off-sit e area s wer e impacte db y amor e comple x sourc e o f

heav y meta l contaminatio n tha n simpl y aresul t o f ai r dispersio n o f particulate s i n th e ai r

emission s fro mth e forme r

foundry . Th e EP A Nationa l Exposur e Researc h Laboratory , La s Vegas , Nevada , (NERL-LV ) report als o note dtha t

lea dcontaminatio ni n th e off

sit e residentia l yard s an dHAA s an dbackgroun dsample s i s characterize db y astron g correlatio n wit hzinc , indicatin g tha t

on e possibl e sourc e i s pain t

wit hacombinatio n o f

lea dcarbonat e an d zin c oxid e pigments . Microscopi c Technique s EP A NERLa t

La s Vega s an dth e Environmenta l Monitorin g an dSuppor t Laborator y (EMSL ) conclude dtha t

adefinitiv e connectio n coul dno t b e establishe dbetwee n th e lea d contaminatio n foun don-site , withi n th e fence dboundarie s o f th e Site , an dth e off-sit e lea d contamination , i n th e residentia l yard s an dhig hacces s area s o f th e Site . Thi s conclusio nwa s base do n a n analysi s o f

SE M image s an dasearc hfo r marke r compounds . Lea dcompound s (wulfenite , lea doxid e sulfate ) foun di nth e baghous e sampl e wer e no t foun di nth e on-site , residential , an dbackgroun dsoi l samples . Also , n o clearl y definabl e marke r compound s coul db e establishe dbetwee n th e on-sit e sample s an dth e off-sit e residential/backgroun dsamples . Th e EMS Lreport

note dthat n o constructio n material s (pain t chips/solder ) coul db e linke dt o th e lea d contaminatio n i n th e residentia l samples . Thi s wa s base do n limite dsample s ( 7 samples) . Th e EP A believe s tha t

th e ai r emission s fro mth e forme r

foundry , whic hcontaine d particle s o f lead , ma y hav e cause dth e on-sit e (O U 1 ) an doff-sit e (O U 2 ) soil s t o becom e contaminate dthroug hth e ai r depositio n o f

thes e particles . However , th e widesprea d contaminatio n o f

lea di n residentia l area s i s no t totall y du e t o th e foundry , bu t du e t o probabl e source s o f lea dcontaminatio n includin g lead-base dpain t an dhistorica l depositio n fro mvehicula r lead-base dfue l emissions . Additiona l discussio n regardin g Sourc e Evaluatio nConclusion s i s foun di n Sectio n 14. 3 o f

thi s ROD . 11. 0 FUTUR E LAN D USE S Lan dus e i n th e OU 2 Stud y Are aha s historicall y bee n residential , althoug hsom e industria l propertie s ar e als o foun di n th e immediat e vicinit y o f th e site . Th e Cit y o f

Houston' s Reus e Assessmen t

Report determine dtha t

th e likel y reus e o f

th e MD I propert y (OU1 ) woul db e 2 0Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 mixe dresidentia l an dneighborhood-typ e commercia l us e (Cit y o f Houston , 2002) . Th e OU 1 Site i s surrounde db y residential propertie s t o th e north , east , an dwest , an dindustria l propertie s t o th e south . Ove r th e las t year , industria l area s t o th e southwes t tha t surroun dOU 1 hav e bee n redevelope dint o condos . Becaus e th e Cit y o f Housto n doe s no t

hav e zoning , th e EP A develope d remova l clean-u p criteri aa s wel l a s develope dth e baselin e ris k assessmen t

upo n residentia l us e scenarios . 12. 0 SIT E RISK S Huma n Healt han dEcologica l Ris k Assessment s ar e a n integra l par t o f th e Remedia l Investigatio n an dFeasibilit y Stud y (RI/FS ) process . A Huma n Healt hRis k

Assessmen t

estimate s th e curren t

an dpossibl e futur e risk s i f

n o actio n wer e take n t o clean u p asite . Th e EPA' s Superfun dris k assessor s determin e ho w threatenin g ahazardou s wast e sit e i s t o huma n healt han dth e environment . The y see k t o determin e asaf

e leve l fo r eac hpotentiall y dangerou s contaminan t presen t (e.g. , aleve l a t

whic h il l healt heffect s are unlikel y an dth e probability o f cance r i s very small) . Livin g near

a Superfun dsit e doesn' t

automaticall y plac e aperso n a t risk , tha t depend s o n th e chemical s presen t andthe way s peopl e are expose dto them . A n Ecologica l Ris k

Assessmen t

i s define da s aproces s tha t

evaluate s th e likelihoo dtha t advers e ecologica l effect s ar e occurrin g o r ma y occu r a s aresul t o f exposur e t o on e o r

mor e stressors . A stresso r

i s an y physical , chemical , o r biologica l entit y tha t

ca n induc e a n advers e ecologica l response . Advers e response s ca n rang e fro msubletha l chroni c effect s i n individua l organism s t o alos s o f

ecosyste mfunction . A n Ecologica l Ris k

Assessmen t

(ERA ) wa s no t

acomponen t

o f th e O U 2 investigatio n du e t o th e lac k

o f an y curren t

natura l habita t

i n th e residentia l areas . Th e ER A wa s acomponen t o f th e RI/F S fo r

O U 1 an dth e EPA . determine dtha t ther e i s littl e potentia l fo r

significan t exposur e o f

wildlife t o lead , o r

othe r contaminants , locate dwithi n th e fence dboundarie s o f th e Site . 12. 1 Huma n Healt hRisk Assessmen t Huma n healt hrisk s ar e determine db y evaluatin g know n chemica l exposur e limit s an d actual chemical concentration s foun da t th e sit e a s identifie ddurin g fiel dsamplin g activities . Th e actual contaminan t

concentration s ar e compare dt o th e exposur e concentration s know n t o hav e a n advers e impact. I n th e ris k assessment , carcinogeni c risk s an dnon-carcinogeni c healt hrisk s ar e calculated . Th e ris k

calculatio n use s conservativ e assumption s tha t weig hi n favo r

o f protectin g huma n health . Th e result s ma y b e use dt o mak e decision s regardin g th e necessit y an d 2 1Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 exten t o f remediation , t o develo p site-specifi c cleanu p levels , an dt o hel p selec t appropriat e remedial technologies . T o protec t huma n health , th e EP A ha s establishe dacceptabl e exposur e level s fo r know n o r suspecte dcarcinogens . Th e acceptabl e exposur e level s ar e generall y concentratio n level s tha t represen t a nexces s uppe r

boun dlifetim e cance r

ris k t o a nindividua l i narang e betwee n on e i n te nthousan dan don e i namillio n (als o expresse da s 10" " an d10" 6 ) wit hon e i namillio nbein g th e poin t o f departur e fo r

cleanu p goals . Th e cance r

ris k estimate dfo r

Superfun dsite s i s referre dt o a s exces s lifetim e cance r

ris k (ELCR ) becaus e i t

woul db e i nadditio n t o th e risk s o f cance r individual s fac e fro mal l othe r cause s suc ha s smokin g o r

exposur e t o to o muc hsun . Th e leve l o f

concern fo r

non-carcinogeni c contaminant s i s determine db y calculatin g a Hazar dInde x (HI) . Th e H I i s calculate db y addin g chemical-specifi c Hazar dQuotient s (HQs) . I f th e H I exceed s on e (1.0) , ther e ma y b e concern fo r potentia l non-cance r

effect s fro mexposur e t o sit e contaminants . Risk s fo r exposur e t o lea dar e calculate dusin g mor e sit e specifi c dat aan dspecificall y focu s o nrisk s t o children . Youn g childre n ca nb e expose dt o lea db y severa l medi aincludin g air , soil , water , dust , diet , an dpaint . Recognizin g th e multi-medi apotentia l fo r lea dexposure , EP A develope dth e Integrate dExposur e Uptak e Biokineti c (IEUBK ) mode l t o evaluat e lea dexposur e i nchildren . Th e IEUB K

mode l predict s th e probabilit y tha t childre n expose dt o lead-containin g medi awil l hav e bloo dlea dconcentration s exceedin g ahealth-base dleve l o f concern . Th e EPA' s Offic e o f

Soli dWast e an dEmergenc y Respons e (OSWER ) state s i ndirectiv e #9200.4-27P(Augus t

1998 ) tha t th e ris k reductio n goa l i s t o attemp t

t o limi t exposur e t o soi l lea d(Pb ) level s suc htha t

atypica l (o r

hypothetical ) chil do r

grou p o f similarl y expose dchildre n woul dhav e a nestimate dris k o f n o mor e tha n 5 % o f

exceedin g a1 0 ug/d Lblood-P b level . Thi s blood-P b leve l i s establishe db y th e federa l Center s fo r Diseas e Contro l an dPreventio n (CDC) . Th e directiv e als o state s tha t

th e EP A recommend s tha t

asoi l P b concentratio n b e determine ds o that atypica l chil do r

grou p o f childre n expose dt o P b a t

thi s leve l woul dhav e a n estimate dris k o f n o mor e tha n 5 % o f

exceedin g ablood-P b leve l o f 1 0 (j.g/dL . 12.1. 1 Ris k

Assessmen t

fo r EP A Remova l Actio n fo r

Lea d EP A a s wel l a s TCE Q hav e conducte dnumerou s ris k assessment s fo r

previou s site s contaminate dwit hlead . TNRCC' s remova l actio n i n 199 9 establishe daclean-u p leve l fo r lea d a t 50 0 mg/kg , whic hwa s determine dt o b e protective . Lea ddat acollecte ddurin g th e off-sit e R I indicate dtha t

5 9 propertie s (severa l residence s a s wel l a s Bruc e Elementar y School ) ha dlea d concentration s exceedin g th e actio n leve l fo r th e 199 9 TNRC C remova l action . A n EP A remova l actio ntargetin g Bruc e Elementar y Schoo l an dresidentia l yard s wit hlea dconcentration s greate r tha n o r equa l t o 50 0 mg/k g wa s conducte di nth e summe r an dfal l o f 200 3 a s wel l a s th e summe r o f 2005 . Th e actio n leve l fo r

lea di nsoil s (46 3 mg/kg ) wa s determine dt o b e protectiv e o f huma n 2 2Man y Diversifie dInterests , Inc . Superfun dSite Recor do f Decisio n fo r

Operabl e Uni t

2 healt hbase do n IEUB K

modelin g o f

actua l dat acollecte dfro mothe r EP A Regio n6 Superfun d sites , namel y Tar

Cree k Superfun dSite (EP A 1997) , RS RCorporatio nSuperfun dSit e (EP A 1995) , an dDelatt e Metal s Superfun dSit e (EP A 2000) .

EP A devise dapriorit y schedul e fo r conductin g th e remova l action s fo r th e 5 9 residentia l properties , includin g th e hig hacces s areas . Th e propertie s wer e prioritize dbase do n lea dlevel s an dth e presenc e o f childre no n th e property . Priorit y on e comprise do f propertie s abov e 50 0 pp mlea dwit hchildre nles s tha n6 year s ol dresidin g a t thes e properties . Priorit y 2 comprise do f

propertie s abov e 1000 pp mlea dwit hn o childre nresidin g i n thes e properties . Priorit y 3 comprise do f

propertie s wit h500-100 0 pp mlead . A t th e en do f Jun e 2005 , EP A ha d complete dth e remova l a t

al l 5 9 properties . 12.1. 2 Futur e Risk s Afte r completin g th e remova l actio ni nwhic hEP A remove dlea dcontaminate dsoil , whic hwa s considere dth e principa l threa t waste , EP A conducte daris k assessmen t

o nth e residua l soil s t o determin e futur e risks . Th e potentia l contaminant s o f concern s (COPCs ) wer e lea dan darsenic ; wit hlea da s th e primar y contaminan t o f concer n(COC) . Lea d Th e focu s o f

th e integrate dexposur e uptak e biokineti c (IEUBK ) mode l fo r lea di n childre ni s th e predictio no f

bloo dlea dconcentration s i nyoun g childre nexpose dt o lea dfro m severa l source s an db y severa l routes . Th e mode l i s afour-ste p proces s tha t mathematicall y an dstatisticall y link s environmenta l lea dexposur e t o bloo dlea dconcentration s fo r apopulatio no f

childre n( 0 - 8 4 month s o f

age) . Th e fou r mode l component s eac hreflec t adifferen t aspec t o f th e overal l biologi c proces s an dar e describe da s follows :

1 ) Th e Exposur e componen t

quantitate s achild' s exposur e t o lea d(fig/day ) b y estimatin g th e concentratio no f lea di nth e environmenta l medi atha t th e chil dcontacts , multiplie db y th e amoun t

o f contac t th e chil dha s withth e mediu man dduratio no f tha t contact . Th e result s fro mth e exposur e componen t o f th e IEUB K

mode l ar e estimate dintak e rate s fo r th e quantitie s o f

lea dinhale do r

ingeste dfro menvironmenta l media . Th e medi aaddresse db y th e IEUB K mode l includ e soil , hous e dust , drinkin g water , air , an dfood . Pain t i s usuall y addresse d i nterm s o f it s contributio nt o th e measure dconcentratio no f lea di nsoi l o r

hous e dust . 2 ) Th e Uptak e componen t

model s th e proces s b y whic hlea dintak e (lea dtha t ha s entere dth e child' s bod y throug hingestio no r inhalation ) i s transferre dt o th e bloo dplasma . Uptak e i s th e quantit y o f

lea dabsorbe dpe r

uni t tim e fro mportal s o f

entr y (gut , lung ) int o th e systemi c circulatio no f

blood . Thi s absorptio nfractio n is , b y convention , terme dbioavailability' .

2 3Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 Th e IEUB K

mode l addresse s th e differen t bioavailabilitie s o f

lea dfro mdifferen t

environmenta l mediaan dprovide s fo r

apartia l saturatio no f

absorptio nat

hig hlevel s o f

lea dintake . 3 ) Th e Biokinetic s componen t o f th e IEUB K

mode l i s amathemati c expressio no f th e movemen t

o f absorbe dlea dthroughou t

th e bod y ove r

tim e b y physiologi c o r

biochemica l processes . Th e mode l continuousl y recalculate s th e lea dmasse s i n eac ho f th e bod y compartment s especiall y th e changin g concentratio no f lea di nblood . 4 ) Th e Variabilit y componen t addresse s variabilit y i nbloo dlea dconcentration s amon g expose dchildren . Childre nhavin g contac t wit hth e sam e concentration s o f environmenta l lea dca ndevelo p very differen t bloo dlea dconcentration s du e t o difference s i nbehavior , househol dcharacteristics , an dindividua l pattern s o f lea duptak e an dbiokinetics . Th e IEUB K mode l use s alog-norma l probabilit y distributio nt o characteriz e thi s variabilit y an dprovide s bes t estimat e o f th e geometri c mea nan dth e 9 5 % uppe r confidenc e leve l (UCL ) o f

th e distributio no f th e bloo dlea dlevel s amon g youn g childre npotentiall y expose dt o lea di nthei r environment . Th e OSWE Rdirectiv e #9200.4-27 P(Augus t 1998) , recommend s th e scenari o t o b e evaluate d(throug hus e o f

th e EEUB K

Model ) i s ayoun g chil di nfull-tim e residence . Therefor e OSWE Rrecommend s characterizin g exposur e unit s a s exposure potentia l at th e individua l residenc e a s th e primar y uni t o f concernfo r

evaluatin g potentia l ris k

a t lea dcontaminate d residentia l sites . Fo r th e MD I site , soi l sample s fro mfron t yar dan dbac k

yar do f residence s wer e sample d a t eac ho f fou r dept hintervals : 0 t o 0.0 8 foo t belo w groun dsurfac e (bgs) , 0 t o 0. 5 foo t bgs , 0. 5 t o 1. 0 foo t bg s , an d1. 0 t o 1. 5 fee t

bgs . Eac hsampl e collecte dfro maspecifi c dept hinterva l consiste do f

afive-poin t

composit e sample . Eac hsample dresidentia l yar drepresente da nare a approximatel y equa l t o 2,50 0 squar e feet . Thes e 2,500-square-foo t "yards " wer e selecte da s th e exposur e are afo r

futur e resident s i narea s anticipate dt o b e conduciv e t o hig hactivit y b y futur e chil dresidents . Multi-famil y housin g area s ma y hav e large r area s o f possibl e hig hactivity . Thes e large r area s wer e subdivide dint o approximatel y 2,50 0 -square-foo t subareas . I nadditio nt o residentia l properties , schools , publi c parks , churchyard s an dvacan t lot s i n residentia l neighborhoo dwer e als o subdivide dint o 2,500-square-foo t exposur e area s an dsample da s aon e fiv e poin t composit e sampl e a t

eac ho f th e fou r dept hintervals . Excep t fo r Kell y Villag e Housin g Complex , apoint-by-poin t evaluatio nfo r

lea dwa s don e utilizin g th e IEUB K

leadmodel . That

is , eac hcomposit e soi l sampl e tha t exceede dth e soi l lea dscreenin g leve l o f

40 0 mg/k g an dwa s les s tha nth e remova l practica l clea nu p leve l o f 46 3 mg/k g wa s inpu t

int o th e IEUB K

mode l t o evaluat e th e residua l ris k lef t afte r th e soi l remova l action . Th e othe r

inpu t variable s wer e lef

t a t thei r defaul t value s wit hth e dietar y lea dintak e value s update dt o th e ne w defaul t values . Sixtee nlea dresult s (representin g 1 3 properties ) fo r sample s collecte da t

depth s betwee n0 2 4Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 an d0.0 8 foo t

bg s wer e evaluate dwit hth e IEUB K lea dmodel . Modele dlea dconcentration s range dbetwee n 400. 4 mg/k g t o 457. 6 mg/kg . A t thi s dept hinterval , th e estimate dpercentag e o f childre n predicte dt o hav e abloo dlea dleve l greate r tha n 1 0 [ig/d

Lrange dfro m5. 0 t o 7. 5 percent .Seve n lea dresult s (representin g si x locations ) fo r sample s collecte da t

depth s betwee n 0 an d0. 5 foo t

bg s wer e evaluate dusin g th e IEUB K lea dmodel . Modele dlea dconcentration s range dfro m406. 6 mg/k g t o 446. 8 mg/k g . A t thi s dept hinterval , th e estimate dpercentag e o f childre n predicte dt o hav e abloo dlea dleve l greate r tha n 1 0 fig/d Lrange dfro m5.24 1 t o 6.985 . Tw o lea dresult s (431. 6 mg/k g an d412. 0 mg/kg ) fo r sample s collecte dfro m0. 5 an d1. 0 foo t bg s wer e evaluate dwit hth e IEUB K lea dmodel . A t

thi s dept hinterval , th e estimate d percentag e o f

childre n predicte dt o hav e abloo dlea dleve l greate r tha n 1 0 u.g/d Lrange dfro m 5.4 6 t o 6. 3 percent . On e lea dresul t

(42 8 mg/kg ) fo r

asampl e collecte dfro m1. 0 an d1. 5 foo t bg s wa s evaluate dwit hth e IEUB K

lea dmodel . A t

thi s dept hinterval , th e estimate dpercentag e o f childre n predicte dt o hav e abloo dlea dleve l greate r tha n 1 0 [ig/dLwa s 6.1 4 percen t Tabl e 3 show s th e IEUB K

modele dresult s fo r

lead . Althoug hthes e percentage s excee d th e EP A OSWE Rrecommende dris k reductio n goa l tha t

limi t exposur e t o soi l lea dlevel s suc h tha t atypica l (o r

hypothetical ) chil do r

grou p o f similarl y expose dchildre n woul dhav e a n estimate dris k

o f n o mor e tha t

5 % o f exceedin g a1 0 u.g/dLbloo dlea dlevel , th e experienc e o f Regio n 6 wit hothe r

superfun dsite s (RSR , Ta r

Cree k an dDelatt e Superfun dsites ) wit hlea d contaminatio n sho w tha t

th e remova l actio n o f

50 0 mg/k g i s protectiv e fo r huma n healt han dth e environment .

2 5Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 Tabl e 3 : IEUB K

ModeledLeadResults

- Predicte dPercen t Abov e Bloo dLeve l o f

Concern fo r Resident Chil d

Locatio n I d* 4 7 10 6 12 2 13 3 13 7 15 8

16 1 18 5 19 7 21 8 22 7 23 7 24 0 24 7 25 7 27 3 27 8 29 6 31 8 Lea d

Concentratio n (mg/kg ) b 424. 4 428. 4 444. 4 434. 4 438. 4 411. 6 446. 0 443. 2 457. 6 418. 4 426. 8 414. 0 433. 2 446. 0 431. 6 434. 4 428. 0 400. 4 412. 0 450. 8 429. 6 413. 0 444. 0 446. 8 403. 8 406. 6 Dept h (ft ) 0-0.0 8 0.0 5 0-0.08 . 0-0.0 8 0-0.0 8 0-0.0 8 0-0.0 8 0-0. 5 0-0.0 8 0-0. 5 0-0.0 8 0-0.0 8 0-0.0 8 0-0.0 5 0.5-1. 0 0-0.0 8 1.0-1. 5 0-0.0 8 0.5-1. 0 0-0.0 8 0-0.0 8 0-0. 5 0-0.0 8 0-0. 5 0-0.0 8 0-0. 5 Geometri c Mea n

Blood-Lea dLeve l ' (Hg/dL ) 4.81 2 4.84 5 4.97 5 4.89 4 4.92 7 4.70 7 4.98 8 4.96 6 5.08 2 4.76 3 4.83 2 4.72 7 4.88 4 4.98 8 4.87 1 4.89 4 4.84 2 4.61 5 4.71 0 5.02 7 4.85 5 4.71 9 4.97 2 4.99 5 4.64 3 4.66 6 Percen t Abov e d 5.98 3 6.15 6 6.87 4 6.42 1 6.60 0 5.44 4 6.94 8 6.81 9 7.49 4 5.72 7 6.08 7 5.54 3 6.36 8 6.94 8 6.29 7 6.42 1 6.13 9 4.99 4 5.46 1 7.17 2 6.20 9 5.50 2 6.85 6 6.98 5 5.12 9 5.24 1 Notes : a - Locatio n I D correspond s t o asampl e ID . Se e R J repor t t o cros s reference . b

- Th e backgroun dconcentratio n fo r lea di nsoi l ( 0 t o 0.0 8 foo t

bgs ) i s 150. 5 mg/kg . c - Geometri c mea n blood-lea dleve l fo r achil dcalculate dove r

0 t o 8 4 month s (o r

0 t o 7 years) . Th e blood-lea dleve l wa s determine dusin g th e IEUB K Mode l fo r Lea di nChildre n (EP A 2003b) . Th e measure dsoi l concentratio nwa s use da s th e mode l input . Th e dat ase t wa s limite dt o residentia l propertie s onl y an dcensore dfo r duplicat e results . d

- Th e percentag e o f

expose dchildre ntha t

woul dhav e ablood-lea dleve l exceedin g th e lea dleve l o f concer n 2 6Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 Arseni c EP A evaluate dth e risk s associate dwit harseni c contaminate dsoi l b y performin g a proportiona l compariso n t o th e medium-specifi c screenin g leve l (MSSL ) fo r residentia l soi l t o estimat e th e cance r

ris k an dnoncance r

hazards , a s wel l a s throug hth e computatio n o f a n exposur e poin t

concentratio n (EPC) . Ther e wa s on e residentia l sampl e an d4 sample s (representin g 2 locations ) fro mth e Bruc e Elementar y Schoo l tha t

exceede dth e EP A MSS Lfo r arseni c an dfo r

whic hEP A di dno t

perfor m aremova l actio n fo r

tha t locatio n (Se e Tabl e 2 i n Sectio n 10.6.2) . Fo r th e residentia l sample , EP A assume dtha t aresiden t woul db e expose ddail y fo r

3 0 year s t o th e 9. 7 mg/k g concentration , whic hwoul dcorrespon d(base do n scalin g agains t th e residentia l cancer-base dMSS Lfo r arsenic ) t o acance r

ris k o f 2 5 i n1 millio n(o r

2. 5 x 10~ 5 ) . Thi s i s withi n th e ris k

managemen t

rang e bu t belo w th e "brigh t

line " o f 1 i n10,00 0 (o r

1 x 10~ 4 ) tha t woul dtrigge r

Comprehensiv e Environmenta l Response , Compensatio n an dLiabilit y Ac t (CERCLA ) remediation . I f

aresiden t wa s expose ddail y fo r

3 0 years , thi s woul dcorrespon dt o a noncance r hazar d(base do n scalin g agains t th e noncancer-base dMSS Lo f 2 2 mg/kg ) o f

0.4 , whic hi s belo w th e targe t

threshol do f

1.0 . EP A employe damethodolog y fo r th e Bruc e Elementar y Schoo l arseni c exceedance s whic hinvolve dcalculatin g a95-percen t uppe r confidenc e limi t

(95UCL ) o narseni c result s t o ge t ameasur e o f

th e exposur e mea n o f

arseni c concentratio n acros s al l area s ove r time , no t jus t th e maximu mi nth e on e limite dstri p o f lan dadjacen t

t o Bringhurs t

Stree t (thi s stri p wa s wher e th e exceedance s wer e located) . A 95UC Lfo r th e arsenic remainin g afte r

th e summe r

200 3 EP A remova l i s 5. 1 mg/k g (assumin g anonparametri c distributio n usin g th e Chebyche v inequalit y discusse di n EP A 2002b ) whe n calculate dwithEPA' s ProUC Lsoftwar e (Versio n 2.1 ) assumin g hal f th e detectio n limi t

fo r result s tha t

wer e nondetec t

fo r arsenic . I f aresiden t wa s expose ddail y fo r

3 0 year s t o th e 5. 1 mg/k g arseni c concentration s (95UCL ) a t Bruc e Elementar y School , thi s woul dcorrespon d(base do n scalin g agains t th e residentia l cancer-base dMSS Lfo r arsenic ) t o acance r

ris k o f 1 3 i n1 millio n(o r

1. 3 x 10" 5 ) , whic hi s withi n th e ris k

managemen t

rang e bu t belo w th e "brigh t

line " o f 1 i n10,00 0 (o r

1 x 10" ) tha t woul dtrigge r

CERCL A remediation . I f

aresiden t wa s expose ddail y fo r

3 0 years , thi s woul dcorrespon dt o anoncance r hazar d(base do n scalin g agains t th e noncancer-base dMSS Lo f 2 2 mg/kg ) o f

0.2 , whic hi s belo w th e targe t threshol do f

1.0 . Exposur e at

Bruc e Elementar y Schoo l i s expecte dt o b e fo r

amaximu mo f

8 year s instea do f

th e 3 0 year s exposur e assume di n th e abov e exposur e calculations . (Se e th e Uncertaint y Sectio n fo r Bruc e Elementar y i nSectio n 12.2. 3 o f thi s ROD )

2 7Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 Kell y Villag e Part o f th e Kell y Villag e Publi c Housin g fel l withi nth e depositio no f lea disoplet hmode l leve l whic hdelineate dth e exten t o f contaminatio nan dinvestigatio no f th e offsit e residentia l area s fo r th e MD I site . Th e housin g sectio neas t o f Grov e stree t

wa s include di nthi s investigation . Thi s are ai s mad e u p o f thre e blocks , eac hbloc k

ha s fou r buildin g apartments . Th e thre e bloc k are awa s subdivide dint o approximatel y 2,50 0 square-foo t subareas , eac ht o b e counte da s adiscret e residentia l "yard, " althoug hthe y migh t b e par t o f alarge r residentia l parcel . A composit e soi l sampl e wa s collecte dfro meac h2,50 0 square-foo t "yard, " a t th e fou r differen t dept hintervals . T o bette r

understan dth e ris k

t o achil dlivin g i nan y sectio no f th e Kell y Villag e housin g complex , thre e exposur e area s wer e identifie dt o calculat e a nexposur e poin t concentratio nrepresentin g th e concentratio no f soi l tha t achil dwoul db e expose dt o ove r time . Th e whol e Kell y Villag e housin g are ainvestigate dwa s considere da s on e exposur e area , that i s achil dcoul dcom e i n contac t wit hal l th e contaminate dsoi l ove r time . A 9 5 UC Lo n th e arithmeti c mea no f

232.4 5 mg/k g wa s calculate dan dinpu t i n th e IEUB K

lea dmodel . Th e estimate dgeometri c mea nbloo dlea dleve l wa s 2.88 5 fig/d L.Th e estimate dpercentag e o f childre npredicte dt o hav e ablood-lea dleve l greate r tha n1 0 u.g/dLwa s 0.40 9 percent , whic hi s belo w th e EPA OSWERgoa l o f 5 percent . Th e sam e wa s performe dfo r exposur e area s o f

hal f abloc k an dablock . Childre nplayin g i nBloc k No . 2 (Refer

t o th e HHR A repor t

i nth e Administrativ e Recor dfo r Figure s o nKell y Village ) wer e foun dpotentiall y a t a nincrease dris k

o f havin g abloo dlea dleve l exceedin g 1 0 |ig/d Lwhethe r w e assume dth e exposur e are at o b e hal f th e bloc k o r th e whol e bloc k

area . Th e estimate dpercentag e o f

childre npredicte dt o hav e ablood-lea dleve l greate r tha n1 0 ^g/d Lwa s 9. 8 percen t an d3 4 percen t

respectively , whic hi s abov e th e EP A OSWE Rgoa l o f n o mor e tha n5 percen t exceedin g abloo dlea dleve l o f 1 0 |ig/dL . However , mos t

o f th e contaminatio ni s foun d a t 0. 5 foo t bg s an d1. 5 foo t

bgs , whic hprevent s curren t

exposure . I norde r

t o preven t futur e exposur e i nth e even t

th e contaminate dsoi l a t

dept hi s expose dt o th e surface , EP A recommend s tha t th e are ab e remediated . Se e Sectio n15. 0 an d15. 1 fo r additiona l informatio nregardin g th e Kell y Villag e Housin g Complex . 12. 2 Uncertaintie s i n th e Ris k Assessmen t 12.2. 1 Lea d There ar e uncertaintie s associate dwit hth e exposur e assumption s i n th e ris k assessment . Thes e exposur e assumptio nuncertaintie s concern th e us e o f th e defaul t 70 % mas s correlatio no f P b concentration s wit houtsid e soi l t o indoo r dust . A potentia l sourc e o f

uncertaint y associate dwit hth e exposur e assessmen t i s th e 70 % contributio no f

P b i nyar dsoi l t o P b concentration s in'indoo r dust . Indoo r

dus t dat aar e no t 2 8Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio nfo r

Operabl e Uni t

2 availabl e fo r

OU2 ; therefore , th e EEUB K

Mode l defaul t

valu e o f 70 % wa s assumed . Thi s mean s tha t P b i nyardsoi l wa s assume dt o contribut e 70 % o f th e P b concentration s i nindoo r dust . Base do nmeasure dindoo r

dus t concentration s a t

othe r Superfun dsite s withi nEP A Regio n6 (e.g. , RS Ran dTa r

Cree k Superfun dsites) , th e 70 % dus t lea denrichmen t

valu e ma y b e a n overestimatio no f

th e actua l contributio nfro moutdoo r soil . Thi s defaul t

valu e resulte di na n overestimatio no f

thi s sit e specifi c ris k

evaluation , tha t

i s th e percentag e o f

childre no f

n o mor e tha n5% , slightl y exceede dth e 1 0 ug/d Lblood-P b leve l establishe db y th e CDC . 12.2. 2 Arseni c - Residentia l Yar d A conservativ e defaul t

assumptio nfo r

arsenic' s relativ e bioavailability , whic hi s 10 0 percent , wa s use di n th e EP A MSS Lcalculation . However , th e TCE Q ha s adopte dareduce d bioavailabilit y facto r

o f 7 8 percent . I f

thi s scientificall y vali dbioavailabilit y facto r wer e applie d t o th e arseni c MSSL , th e soi l ingestio ncontributio nt o th e MSS Lwoul db e decrease db y 2 2 percent , reducin g th e cance r

ris k t o 2 x 10" 5 an dth e hazar dinde x t o 0.3 . 12.2. 3 Arseni c - Bruc e Elementar y Th e ris k assessmen t

assume daresidentia l scenari o i nwhic haresiden t woul db e expose d t o th e arseni c concentratio nfo r aperio do f 3 0 years . Sinc e exposur e a t

th e elementar y schoo l yar di s no t th e sam e a s exposur e ove r

3 0 years , th e estimate dris k

i s overestimated . A site

specifi c chil dassessmen t

woul dyiel dlowe r

cance r risk s an dnoncance r

hazards , give ntha t exposure woul db e expecte dt o occur onl y over th e elementary school-ag e year s (age s 4 t o 1 2 at Bruc e Elementary) , whic hwoul damoun t t o approximatel y 8 year s o f

exposur e rathe r

tha n3 0 year s o f exposure . 13. 0 BLOO D LEA D STUD Y Th e Cit y o f Houston' s Departmen t

o f Healt han dHuma nService s (HDHHS , Childhoo d Lea dPoisonin g Preventio nProgram ) performe dblood-P b screenin g o f Fift hWar dchildre n durin g th e "Screenin g Targete dArea s a t Ris k (STAR ) Project " whic hoccurre do n Jul y 2 9 an d Augus t 21 , 2003 . Th e EP A participate di n th e Augus t 21 s t effor t an dtargete dth e R I stud y area . Th e HDHHS' s analysi s o f

th e STA RProjec t

blood-P b dat aindicate dtha t non e o f th e 4 9 childre n teste dvenousl y exhibite dblood-P b level s greate r tha nth e 1 0 ug/d Lleve l establishe db y th e federa l CDC . 14. 0 CONCLUSION S Al l residentia l propert y yard s an dhig hacces s area s (fo r whic hEP A receive dsite-access ) withleadconcentration s abov e 50 0 mg/kg were addresse db y aremova l action . A tota l o f 14 8 propertie s wer e remediated . TCE Q conducte daremova l o f 8 9 propertie s durin g 199 8 an d1999 , an dEP A conducte daremova l o f 5 9 propertie s i nNovembe r

200 3 an dJun e 2005 . EP A believe s 2 9Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 tha t th e remova l action s hav e eliminate dth e existin g an dpotentia l risk s t o huma n healt han dth e environmen t

s o that n o furthe r actio n i s necessary . 14. 1 Lea dContaminatio n an dRisk s Base do n th e blood-P b screenin g dat ab y th e Cit y o f Housto n Healt han dHuma n Service s an dth e blood-P b level s predicte db y th e IEUB K Model , th e EP A believe s tha t P b i n soi l doe s no t presen t asignifican t

ris k t o th e community , especiall y sinc e th e residentia l yard s withi nth e stud y are ahav e bee n remediated . Althoug hth e percentage s o f th e residua l lea dafte r

th e remova l actio n excee dth e EP A OSWE Rrecommende dris k reductio n goa l tha t

limi t exposur e t o soi l lea d level s suc htha t

atypica l (o r

hypothetical ) chil do r

grou p o f similarl y expose dchildre nwoul d hav e a n estimate dris k

o f n o mor e tha t

5 % o f exceedin g a1 0 u.g/dLbloo dlea dlevel , th e experienc e o f

Regio n 6 wit hothe r

superfun dsite s (RSR , Ta r

Creek , an dDelatt e Superfun dsites ) wit hlea dcontaminatio n sho w tha t th e remova l actio n o f

50 0 mg/k g i s protectiv e fo r huma n healt han dth e environmen t 14. 2 Arseni c Contaminatio n an dRisk s Th e arseni c concentration s are withi n th e ris k managemen t

rang e o f 10" 4 t o 10~ 6

. Base d upo n th e assumption s an ddefault s use di n th e ris k assessment , th e arseni c risk s ar e overestimated . Secondly , arseni c i s no t

achemica l tha t

wa s associate dwit hth e foundr y operation s an di s mos t likel y aresul t

o f backgroun dconcentrations . Therefore , th e arseni c concentration s a t on e residentia l are aan dth e 4 area s locate da t Bruc e Elementar y Schoo l d o no t pos e aris k

tha t need s t o b e addressed . 14. 3 Sourc e Evaluatio n Th e EPA' s recommendatio n o f "n o furthe r

remedia l action " i s als o base do n th e uncertaintie s associate dwit hth e additiona l analyse s performe di n orde r t o evaluat e othe r potentia l source s o f

contaminatio n i n th e residentia l yard s an dHAA s o f th e Site . Thes e additiona l analyse s include dacompariso n o f th e rati o o f

certai n metal s i n soil , evaluatio no f scatte r plots , an dth e us e o f

microscopi c techniques . Th e compariso n o f

th e rati o o f

certai n metal s i n soil , includin g th e ba g hous e wast e representin g aspecifi c tim e perio do f ai r emissions , an dth e evaluatio n o f scatte r plot s conclude d that th e forme r foundr y i s no t

th e sourc e o f

widesprea dcontaminatio n i n th e residentia l yard s an d HAA s o f th e Site . Base do n thes e evaluations , th e EP A believe s tha t likel y source s contributin g t o th e concentration s o f

P b i n th e soil s ar e tai l pip e emission s fro mvehicle s an dPb-base dpaint , amon g othe r

possibl e sources . Th e compariso n o f th e rati o o f

certai n metal s i n soi l an dth e evaluatio n o f

scatte r plot s ar e describe di n mor e detai l i n th e "Sourc e Evaluatio n - Rati o o f 3 0Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 Metal s i n Soils " an d"Sourc e Evaluatio n - Scatte r Plots " section s o f

thi s ROD . Throug hth e us e o f

microscopi c analyses , NERL

- L V an dEMS Lconclude dtha t a definitiv e connectio n coul dno t b e establishe dbetwee n th e P b contaminatio n foun don-site , withi nth e fence dboundarie s o f th e Site , an dth e off-sit e P b contamination , th e residentia l area s o f th e Site . Base do nth e bes t

availabl e data , eve n i f

limited , th e EP A believe s tha t th e forme r foundr y i s no t

th e sourc e o f

widesprea dcontaminatio n i nth e residentia l yard s an dHAA s o f th e Site , sinc e n o clearl y definabl e marke r compound s coul db e establishe dbetwee n th e on-sit e sample s an dth e off-sit e residentia l an dbackgroun dsamples . 15. 0 SIGNIFICAN T CHANGE S Th e propose dpla n fo r

th e Man y Diversifie dInterest s Superfun dSit e Operabl e Uni t 2 wa s release do n Jul y 29 , 2005 . Th e propose dpla n recommende d"n o furthe r remedia l action " fo r Operabl e Uni t

2 . Th e publi c commen t

perio dwa s hel dfro mAugus t 8 , 2005 , t o Septembe r

8 , 2005 . EP A reviewe dth e transcrip t fro mth e publi c meetin g o nAugus t 16 , 2005 , an dn o writte n o r verba l comment s wer e submitte ddurin g th e publi c commen t period . EP A ha s determine dtha t n o significan t

change s t o th e remed y o f

"n o furthe r remedia l action" , a s originall y identifie di n th e propose dplan , wer e necessary . On e chang e fro mth e propose dpla n i s th e scop e o f Operabl e Uni t

2 . Th e propose dpla n identifie dOff-Sit e Residentia l Soil s an dHig hAcces s Areas , whic hinclude dconductin g a remova l actio n a t

th e northeaster n portio n o f

th e Kell y Villag e Housin g complex . Sinc e sit e acces s wa s no t

grante db y th e Cit y o f

Housto n prio r

t o th e issuanc e o f

thi s RO D fo r

th e conduc t o f th e remova l action , th e Kell y Villag e Housin g Comple x wil l b e addresse dunde r Operabl e Unit3 . 15. 1 Kell y Villag e Housin g Comple x Histor y h i Jul y 2005 , th e EP A bega n plannin g fo r aremova l actio n a t

th e northeaster n portio n o f th e Kell y Villag e Housin g comple x wher e th e concentration s o f lea di n th e soi l exceede dth e cleanu p goal o f

50 0 mg/kg . Al l o f

th e soi l sample s collecte dfro mKell y Villag e fro m0 t o 0. 5 foo t belo w groun dsurfac e (bgs ) containe dlea dconcentration s les s tha n th e 46 3 mg/k g practica l cleanu p leve l fo r

lea di n soi l an dtherefor e doe s no t pos e athrea t

t o th e community . Th e soi l sampl e dat adi didentif y lea dcontaminatio n a t

9 gri darea s rangin g fro m0. 5 t o 1. 5 fee t bg s i nth e northeaster n portio n o f th e complex , bu t

thi s als o doe s no t

pos e acurren t immediat e threa t

t o th e communit y becaus e o f th e clean soi l an dadequat e gras s cove r fro m0 t o 0. 5 foo t bgs . However , a s aconservativ e measure , th e EP A recommende dperformin g aremova l actio n i n thes e area s t o preven t futur e exposur e i n th e even t

th e deepe r soi l i s expose dt o th e surfac e b y futur e constructio n o r othe r excavatio n activities . 3 1Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio nfo r

Operabl e Uni t

2 O n Jul y 28 , 2005 , EP A requeste daceilin g increas e an da n amendmen t t o th e Remova l Actio nt o includ e th e Kell y Villag e Housin g Complex . A t th e tim e o f

th e issuanc e o f

th e propose dpla nfo r

thi s Operabl e Unit , th e EP A wa s i nth e proces s o f coordinatin g wit hth e Cit y o f Housto nHousin g Authorit y t o conduc t aremova l actio na t

th e Kell y Villag e Housin g Complex . EPA' s objectiv e fo r

aremova l actio nwa s t o remov e surfac e soi l (t o adept ho f 1. 5 fee t bgs ) wit h concentration s o f

lea dtha t equale do r exceede dth e cleanu p goa l o f 50 0 mg/k g t o reduc e futur e exposur e o f

childre nan dadult s t o lead , i nth e even t constructio nactivitie s expos e th e deepe r soi l t o th e surface . Severa l meeting s an dcommunication s betwee nth e EP A an dth e Cit y o f Housto n Housin g Authorit y hav e occurred : Jul y 26 , Jul y 29 , an dAugus t 18,2005 . O nAugus t

18,2005 , EP A me t wit hth e Cit y o f

Housto nHousin g Authorit y t o furthe r explai nEPA' s recommendation . A s o f th e dat e o f thi s ROD , th e EP A ha s no t

obtaine dsit e acces s t o conduc t th e remova l action . Th e EP A wil l b e discussin g option s wit hth e Cit y o f Housto nHousin g Authorit y an dth e fina l decision s fo r

th e Kell y Villag e Publi c Housin g Comple x wil l b e documente di nth e RO D fo r Operabl e Uni t

3 . 16. 0 STAT E ROL E Th e Texa s Commissio no n Environmenta l Quality , o n behal f o f th e Stat e o f

Texas , ha s concurre dwit hth e EPA' s recommendatio no f N o Furthe r Remedia l Action . Th e Stat e ha s als o reviewe dth e Remedia l Investigation , Ris k Assessmen t

an dFeasibilit y Stud y t o determin e i f th e selecte dremed y i s i ncomplianc e wit happlicabl e o r relevan t an dappropriat e Stat e environmenta l law s an dregulations . Th e Stat e o f Texas ' lette r

o f suppor t fo r th e selecte dremed y fo r

th e Man y Diversifie dInterest s Superfun dSit e Operabl e Uni t 2 i s include di nAppendi x B . 17. 0 COMMUNIT Y ACCEPTANC E Th e publi c commen t

perio dbega no nAugus t

8 , 2005 , an dconclude do nSeptembe r 8 , 2005 . On e lette r

wa s submitte dt o th e Agenc y o nSeptembe r 6 , 200 5 vi aemai l an dfollowe db y a lette r sen t expres s mail . Th e letter , submitte db y th e 5 t hWar dMother s fo r Clea nAir , th e TA G recipien t fo r th e Site , wa s i n support

o f th e Agency' s recommendatio no f "N o furthe r

remedia l action " fo r Operabl e Uni t

2 .

3 2Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 PAR T 3 : RESPONSIVENES S SUMMAR Y 18. 0 RESPONSIVENES S SUMMAR Y O n Augus t 16 , 2005 , th e EP A hel dapubli c meetin g a t th e 5 l hWar dMulti-Servic e Cente r i nHouston , Texas , t o discus s an danswe r question s regardin g Operabl e Uni t 2 . Al l o f EPA' s response s t o th e question s durin g tha t publi c meetin g ar e presente di n Appendi x C . Th e publi c commen t

perio dwa s fro mAugus t

8 , 200 5 t o Septembe r

8 , 2005 . On e lette r wa s submitte dt o th e Agenc y o n Septembe r 6 , 200 5 vi aemai l an dfollowe db y ahar dcop y o f th e lette r sen t expres s mail . Th e lette r

wa s submitte db y th e 5 t hWar dMother s fo r Clea n Air , th e TA Grecipien t

fo r th e MD I Superfun dSite . A cop y o f th e lette r i s include di n Appendi x D . Overall , th e comment s submitte db y th e TA Gwer e i n suppor t o f th e recommendation s i n th e propose dpla n fo r

OU2 . Th e TA Gdi dhav e comment s regardin g th e upcomin g RI/F S fo r Operabl e Uni t

3 . EP A wil l b e workin g wit hth e TA Ga s wel l a s othe r City , State , an dFedera l Agencie s t o obtai n informatio n tha t wil l assis t i nsecurin g sit e acces s fo r

propertie s withi nth e stud y are at o conduc t

samplin g a s wel l a s clean-up , i f necessary . EP A ha s determine dtha t th e comment s receive dfro mth e TA Gd o no t chang e th e recommendatio n fo r Operabl e Uni t

2 , whic h i s "n o furthe r

remediatio n action. " Th e followin g i s asummar y o f th e comment s receive dfro mth e 5 t hWar dMother s fo r Clea n Ai r an dth e Agency' s response . TA GCommen t 1 . W e concu r

wit hth e finding s o f

th e R I an dF S report s i n tha t al l site s containin g lea d concentration s whic hexceede d50 0 mg/k g wer e remediate db y soi l remova l or , i nth e cas e o f Kell y Villag e area , remediatio n wil l soo n b e completed . EP A respons e to statemen t

1 : EP A ha s complete dclean-u p a t 5 9 propertie s t o date . Th e TCE Q complete dclean-u p a t 8 9 propertie s i n 199 8 t o 1999 . EP A wa s no t abl e t o obtai n sit e acces s fro mth e Housin g Authorit y a s o f

th e dat e o f

thi s RO D t o bega n th e soi l remova l a t th e Kell y Villag e Housin g Complex . Currently , th e soi l contaminatio n a t Kell y Villag e i s no t

acurren t ris k t o th e public ; a s th e are aha s a n adequat e gras s cover . EPA' s recommendatio n fo r a remova l actio n i s base do n th e assumptio n tha t i n th e future , ther e ma y b e th e potentia l tha t th e soi l contaminatio n coul db e sprea dt o th e surfac e b y constructio n o r othe r activities . EP A wil l continu e t o work wit hth e Housin g Authorit y t o presen t option s fo r addressin g th e soi l contaminatio n a t adept ho f 0. 5 fee t an dth e fina l decision s wil l b e documente di n th e RO D fo r

Operabl e Uni t

3 . 3 3Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio n fo r

Operabl e Uni t

2 TA GCommen t 2. We als o concur

tha t sinc e all know n area s of

soil s containin g greate r

tha n 500 mg/k g lea d concentration s hav e bee n remediated , tha t th e n o actio n alternativ e fo r

th e Feasibilit y Stud y i s th e appropriat e conclusion . EP A response t o statemen t

2 : EP A agree s tha t

al l residentia l an dhig hacces s area s withi n th e scop e o f thi s Operabl e Uni t hav e bee n remediated . TA GCommen t 3 . W e agre e wit hth e decisio n t o carry ou t a nOperabl e Uni t

3 R I an dF S t o cove r

th e 11 2 propertie s no t

sample dan dt o evaluat e additiona l crawlspaces . EP A respons e t o statemen t

3 : EP A thank s th e TA Gfo r

thei r support . Operabl e Uni t

3 wil l includ e th e 11 2 propertie s no t sample dpreviously , crawlspaces , an dth e Kell y Villag e Housin g Complex . TA GCommen t 4 . W e are , however , very concerne dabou t th e leve l o f

effor t tha t EP A ha s expended , t o date , i n tryin g t o obtai n acces s t o th e 11 2 propertie s no t sampled . Thes e 11 2 propertie s represen t 27 % o f th e potentiall y affecte dproperties . W e believ e tha t EP A need s t o mak e gainin g acces s t o thes e propertie s areal priority . T o allo w 27 % o f th e potentiall y contaminate dsite s i n th e 5" ' Ward , ahistori c minorit y area , t o g o unsampled , raise s rea l question s abou t

Environmenta l Justice . W e ar e especiall y concerne dwhe n w e ar e tol d tha t on e reaso n wa s becaus e EP A work s throug hth e Departmen t o f Justic e an dth e Departmen t

o f Justic e doe s no t

se e thi s projec t

a s ahig henoug hpriorit y t o suppor t EPA . I f thi s i s th e case , the n EP A shoul das k th e loca l citizen s fo r

assistanc e s o tha t

w e ca n mobiliz e ou r

local an dnationa l politica l representative s t o pu t pressur e o n th e Departmen t

o f Justice . I a msur e ou r

state representative s a s wel l a s ou r U.S . Senator s an dmember s o f

th e U.S . Hous e o f

Representative s woul dprovid e suppor t an dpu t pressur e o n th e Departmen t

o f Justic e i f the y ar e no t

supportin g EP A i n thi s matter . EPA respons e to statemen t

4: EP A ha s expende dnumerou s hour s workin g t o obtai n sit e acces s fro mal l propert y owner s i n th e Stud y Area . EP A ha s attempte dt o mee t wit hth e propert y owners , lef t flyer s i f th e owne r wa s no t available , an dha s sen t

mor e tha n on e lette r

t o th e propert y owner s o f recor d(owner s accordin g t o th e Harri s Count y Appraisa l District ) requestin g site access . EP A ha s als o use davariet y o f source s t o obtai n aphon e numbe r t o contac t th e propert y owners . Th e EP A a s wel l a s th e Departmen t o f Justic e i s committe dt o conductin g athoroug hinvestigatio n o f th e propertie s withi nth e Stud y Area . A s EP A began s th e investigatio n fo r

OU3 , th e Agenc y wil l b e workin g wit hth e TA Ga s wel l a s othe r City , State , an dFederal Agencie s t o obtai n informatio n tha t wil l assis t i nsecurin g 3 4Man y Diversifie dInterests , Inc . Superfun dSit e Recor do f Decisio nfo r

Operabl e Uni t

2 sit e acces s t o th e propertie s withi nth e stud y are at o conduc t samplin g a s wel l a s clean-up , i f necessary . EP A wil l b e keepin g th e TA Gan dcommunit y awar e o f ou r progres s o f securin g sit e acces s throug hcommunit y meeting s a s wel l a s fac t sheets .

3 519. 0 REFERENCE S

Bomar , Georg e W . 1983 . "Texa s Weather. " Universit y o f Texa s Press . Austin , T X City o f Houston . 2002 . "Man y Diversifie dInterests , Inc . (MDI) , Federa l Superfun dSite , Houston , Texas , Reus e Assessmen t Report. " Mayor' s Offic e o f

Environmenta l Policy . Fina l Draft . May . Eagl e Constructio nan dEnvironmenta l Services , L.P . 1999 . "Final Projec t Report , MD I Residentia l Are aSoi l Removal , Houston , Texas. " July . Ecolog y & Environmen t

(E&E) , Inc . 1998 . HR S Documentatio nRecord , Man y Diversifie d Interests , Inc. , Houston , Texas , CERCLI S I D Number : TXD008083404 . Prepare dfo r th e U.S . Environmenta l Protectio nAgency , Regio n6 , Dallas , TX . September . EPA . 1997 . "Recordo f

Decision , Residentia l Areas , Operabl e Uni t 2 , Ta r Cree k Superfun dSite , Ottaw aCounty , Oklahoma. " EP A Regio n6 . August . EPA . 1995 . "Recordo f

Decision , RS RCorporatio nSuperfun dSite , Operabl e Uni t No . 1 - Residentia l Property , Dallas , Texas. " EP A Regio n6 . May . o EPA . 2000 . "Recordo f

Decision , Delatt e Metal s Superfun dSite , Ponchatoula/Tangipaho a Parish , Louisiana. " EP A Regio n6 . September . EPA . 2002b . "Calculatin g Uppe r Confidenc e Limit s fo r

Exposur e Poin t

Concentration s a t Hazardou s Wast e Sites. " OSWE R9285.6-10 . December . EPA . 2003a . "Superfun dLead-Contaminate dResidentia l Site s Handbook. " OERR . Lea dSite s Workgroup . OSWE R9285.7-50 . June . EPA . 2003b . "Integrate dExposur e Uptak e Biokineti c Mode l fo r Lea di nChilren , Window s Versio n(ffiUBKwi nvl. O buil d254). " September . Availabl e a t http://www.epa.gov/superfund/programs/lead/products.htm . EPA . 2003c . "Sa

nJacint o Foundry , Detaile dFacilit y Report. " July . Availabl e o nth e Interne t a t http://www.epa.gov/cgi-bin/getlcReport.cgi?IDNumber= l 100050373161&tool=rad01ech o EPA . 2003d . "Sa

nJacint o Foundry , Detaile dFacilit y Report. " July . On-lin e address : http://oaspub.epa.gov/env

j ust/ej_master.fii_retrieve?database_type=EJ . Tetr aTec hEM I Inc . (Tetr aTech) . 2003a . "Fiel dSamplin g Plan , Remedia l Investigatio nan d Feasibilit y Study , Man y Diversifie dInterest s Superfun dSite. " Marc h26 . 3 6Tetr aTech . 2005 . "Remedial Investigatio n Repor t fo r Operabl e Uni t

2 , Man y Diversifie d Interest s Superfun dSite , Houston , Texas. " July . U.S . Departmen t

o f Agricultur e (USDA) . 1976 . Soi l Surve y o f Harri s County , Texas . Augus t Westo n Solutions , Inc . (Weston) . 2004 . "MD I Offsit e Propertie s Remova l Report , Houston , Harri s County , Texas. " Prepare dfo r EP A Regio n 6 . March . Weston . 2005 . "Addendu mt o th e MD I Offsit e Propertie s Remova l Report , Houston , Harri s County , Texas. " Prepare dfo r EP A Regio n 6 . June .

3 7

# FIGURE SBUFFAL O BAYO U

MD I SUPERFUN D SITE HOUSTON , TEXA S 0 1000 200 0

1 SCAL EI NFEET FIGUR E 1 SIT E LOCATIO N SOURCE : MODIFIE D FRO M USGS , SETTEGAST ,

TEXAS , QUADRANGLE . 198 2N

MD I SUPERFUN D SIT E HOUSTON , TEXA S FIGUR E 2 SUMMAR Y O F EP A AN D TNRC C ACTIVITIE S &EP AMD I SUPERFUN D SIT E HOUSTON , TEXA S FIGUR E 3 AREA S EVALUATE D DURIN G REMEDIA L INVESTIGATIO N O F O U 2 £EP AMD I SUPERFUN D SIT E HOUSTON , TEXA S FIGUR E 4 PREDICTE D DEPOSITIO N ARE A BASE D O N AI R QUALIT Y IMPACT MODE L oEP A

# APPENDI X A

### Prepared for United States Environmental Protection Agency Region 6 RECORD OF DECISION OPERABLE UNIT No. 2 ADMINISTRATIVE RECORD INDEX for MANY DIVERSIFIED INTERESTS INC. EPA ID No. TXD008083404 ESS II Task Order No. 091-021 Rafael A. Casanova Remedial Project Manager U.S. EPA Region 6 Prepared by Science Applications International Corporation 555 Republic Drive, Suite 300 Plano, TX 75074 October 5, 20051 

### PREAMBLE The purpose of this document is to provide th e public with an index to the Administrative Record File (AR File) for the U.S. Environmen tal Protection Agency’s (EPA) selected remedial action to respond to conditions at the Many Diversified Interests Inc. (the “Site”). EPA’s action is authorized by the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), 42 U.S.C. Section 9601 et seq . Section 113 (j)(1) of CERCLA, 42 U.S.C. Sec tion 9613 (j)(1), provides that judicial review of the adequacy of a CERCLA response action sha ll be limited to the Administrative Record (AR). Section 113 (k)(1) of CERCLA, 42 U.S.C. Section 9613 (k)(1), requires the EPA to establish an AR upon which it shall base the selection of its remedial actions. As the EPA de cides what to do at the site of a release of hazardous substances, it comp iles documents concerning the site and it’s decision into an “AR File.” This mean s that documents may be added to the AR File from time to time. After the EPA Regional Administrator or the Administrator’s delegate signs the Action Memorandum or the Record of Decision memoria lizing the selection of the action, the documents which form the basis for the selection of the re sponse action are then known as the Administrative Record “AR.” Section 113(k)(1) of CERCLA requires the EPA to make the AR File available to the public at or near the site of the re sponse action. Accordingly, the EPA has established a repository where the AR File may be reviewed near the Site at: 5 th

### Ward Multi-Service Center Branch Library 4014 Market Houston, TX 77020

Contact: Jo Blair Telephone: (832) 393-1770 The public also may review the AR File at the EPA Region 6 office in Dallas, Texas, by contacting the Remedial Project Manager at the addr ess listed below. The AR File is available for public review during normal business hours. The AR File is treated as a non-circulating reference document. Any document in the AR File may be photocopied according to the procedures used at the repository or at the EPA Region 6 office. This index and the AR File were compiled in accordance with the EPA’s Final Guidance on Ad ministrative Records for Selecting CERCLA Response Actions, Office of Solid Waste and Emergency Response (OSWER) Directive Number 9833.3A1 (December 3, 1990). Documents listed as bibliographic sources for other documents in the AR File might not be listed separately in the index. Where a document is listed in the index but not located among the documents which the EPA has made available inthe repository, the EPA may, upon request, include the document in the repository or make the documen t available for review at an alternate location. This applies to documents such as verified sampling data, chain of custody forms, guidance and policy documents, as well as voluminous site-specific reports. It does not apply to documents in EPA’s confidential file. (Copies of guidance documents also can be obtained by calling the RCRA/Superfund/Title 3 Hotline at (800) 424-9346.)2 

### These requests should be addressed to: Rafael A Casanova Remedial Project Manager U.S. EPA Region 6 1445 Ross Avenue Dallas, Texas 75202-2733 (214) 665-7437 The EPA response selection guidance compendium index has not been updated since March 22, 1991 (see CERCLA Administrative Record s: First Update of the Compendium of Documents Used for Selecting CERCLA Response Actions [March 22, 1991]); accordingly, it is not included here. Moreover, based on resource considerations, the Region 6 Superfund Division Director has decided not to maintain a Region 6 compendium of response selection guidance. Instead, consistent with 40 CFR Section 300.805( a)(2) and 300.810(a)(2) and OSWER Directive No. 9833.3A-1 (page 37), the AR File Index includes lis tings of all guidance documents which may form a basis for the selection of the response action in question. The documents included in the AR File index are arranged predominantly in chronological order. The AR File index helps locate and retrie ve documents in the file. It also provides an overview of the response action history. The index includes the following information for each document: • Doc ID - The document identifier number. • Date - The date the document was published and/or released. “01/01/2525" means no date was recorded. • Pages - Total number of printed pages in the document, including attachments. • Title - Descriptive heading of the document. • Document Type - General identification, (e.g. correspondence, Remedial Investigation Report, Record of Decision.) • Author - Name of originator, and the name of the organization that the author is affiliated with. If either the originator name or the organization name is not identified, then the field is captured with the letters “N/A”. • Addressee - Name and affiliation of the addressee. If either the originator name or the organization name is not identified, then the field is captured with the letters “N/A”.

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

161406 Docid: 000001 Bates: 000009 To: 03/27/1986 Date: 9 Pages: INTERIM RCRA/CERCLA GUIDANCE ON NON-CONTIGUOUS SITES AND ON-SITE MANAGEMENT OF WASTE AND TREATMENT RESIDUE Title: Doc Type: MEMORANDUM ELECTRONIC RECORD Name Organization Author: PORTER, J W U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

161398 Docid: 000010 Bates: 000195 To: 10/01/1988 Date: 186 Pages: GUIDANCE FOR CONDUCTING REMEDIAL INVESTIGATIONS AND FEASIBILITY STUDIES UNDER CERCLA Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

161390 Docid: 000195.001 Bates: 000195.287 To: 12/01/1989 Date: 287 Pages: RISK ASSESSMENT GUIDANCE FOR SUPERFUND VOLUME I HUMAN HEALTH EVALUATION MANUAL [PART A] INTERIM FINAL Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

Page 1 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

161376 Docid: 000196 Bates: 000201 To: 04/01/1990 Date: 6 Pages: A GUIDE TO SELECTING SUPERFUND REMEDIAL ACTIONS

Title: Doc Type: ELECTRONIC RECORD FACTSHEET Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

161381 Docid: 000202 Bates: 000212 To: 04/22/1991 Date: 11 Pages: ROLE OF THE BASELINE RISK ASSESSMENT IN SUPERFUND REMEDY SELECTION DECISIONS [OSWER DIRECTIVE 9355.0-30] Title: Doc Type: MEMORANDUM ELECTRONIC RECORD Name Organization Author: CLAY, DON R U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

161394 Docid: 000213 Bates: 000288 To: 10/01/1991 Date: 76 Pages: RISK ASSESSMENT GUIDANCE FOR SUPERFUND VOLUME 1 - HUMAN HEALTH MANUAL (PART C, RISK EVALUATION OF REMEDIAL ALTERNATIVES) Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

161393 Docid: 000289 Bates: 000352 To: 12/01/1991 Date: 64 Pages: RISK ASSESSMENT GUIDANCE FOR SUPERFUND VOLUME1 - HUMAN HEALTH EVALUATION MANUAL (PART B, DEVELOPMENT OF RISK-BASED PRELIMINARY REMEDIATION GOALS) Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, NONE U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

169292 Docid: 000353 Bates: 000370 To: 08/01/1994 Date: 18 Pages: OSWER DIRECTIVE NO. 9355.4-12: REVISED INTERIM SOIL LEAD GUIDANCE FOR CERCLA SITES AND RCRA CORRECTIVE ACTION FACILITIES Title: Doc Type: MEMORANDUM ELECTRONIC RECORD Name Organization Author: NONE, OFFICE OF SOLID WASTE AND EMERGENCY RESPONSE U.S. EPA Name Organization Addressee: NONE, NONE

93081 Docid: 000371 Bates: 000372 To: 08/28/1994 Date: 2 Pages: FIELD ACTIVITY REPORT FOR THE MANY DIVERSIFIED INTEREST SUPERFUND SITE

Title: Doc Type: REPORT / STUDY Name Organization Author: WINKELMANN, ROGER TEXAS DEPARTMENT OF HEALTH Name Organization Addressee: NONE, NONE

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

155397 Docid: 000373 Bates: 000373 To: 03/29/1995 Date: 1 Pages: [NOTIFICATION THAT SITE IS IN A RESIDENTIAL NEIGHBORHOOD AND LIGHT INDUSTRIAL AREA] Title: Doc Type: E-MAIL MESSAGE Name Organization Author: POTEET, DIANE TEXAS NATURAL RESOURCE CONSERVATI0N COMMISSION Name Organization Addressee: MEADOURS, STENNIE CORRIGAN CONSULTING INCORPORATED

155371 Docid: 000374 Bates: 000374 To: 04/11/1995 Date: 1 Pages: [RESULTS OF AIR SAMPLING AT SAN JACINTO FOUNDARY]

Title: Doc Type: E-MAIL MESSAGE Name Organization Author: HAMM, STEVE TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: NEWBERRY, WESLEY G TEXAS NATURAL RESOURCE CONSERVATION COMMISSION MEADOURS, STENNIE CORRIGAN CONSULTING INCORPORATED POTEET, DIANE TEXAS NATURAL RESOURCE CONSERVATI0N COMMISSION

161397 Docid: 000375 Bates: 000385 To: 05/25/1995 Date: 11 Pages: [LAND USE IN THE CERCLA REMEDY SELECTION PROCESS][OSWER DIRECTIVE NO. 9355.7-04] Title: Doc Type: MEMORANDUM ELECTRONIC RECORD Name Organization Author: LAWS, ELLIOT P U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Page 4 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

93121 Docid: 000386 Bates: 000389 To: 03/27/1996 Date: 4 Pages: [CONCERNS REGARDING THE TEXAS ELECTRIC STEEL CASTING COMPANY]

Title: Doc Type: CORRESPONDENCE Name Organization Author: BRYANT, CHARLES BLANCHE K BRUCE ELEMENTARY SCHOOL Name Organization Addressee: YORK, HAROLD HOUSTON INDEPENDENT SCHOOL DISTRICT

93202 Docid: 000390 Bates: 000390 To: 04/08/1996 Date: 1 Pages: [TRANSMITTAL OF RESULTS FROM THE INORGANIC CONTRACT LABORATORY PROGRAM FOR THE RESIDENTIAL AND SCHOOL YARD SAMPLES FOR THE MANY DIVERSIFIED INTEREST SUPERFUND SITE] Title: Doc Type: FAX TRANSMITTAL / COVER SHEET Name Organization Author: SEILS, ALLAN M TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: CABALLAS, BARTOLOME' J U.S. ENVIRONMENTAL PROTECTION AGENCY

93122 Docid: 000391 Bates: 000392 To: 05/08/1996 Date: 2 Pages: [TNRCC'S ANSWERS TO QUESTIONS RAISED DURING THE APRIL 19, 1996 BLANCHE KELSO BRUCE ELEMENTARY SCHOOL STAFF MEETING] Title: Doc Type: CORRESPONDENCE Name Organization Author: NEWBERRY, WESLEY G TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: BRYANT, CHARLES BLANCHE K BRUCE ELEMENTARY SCHOOL

Page 5 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

93058 Docid: 000393 Bates: 000393 To: 08/13/1996 Date: 1 Pages: [DISCUSSION WITH THE CITY OF HOUSTON REGARDING RESULTS OF CHILDREN TESTED FOR LEAD] Title: Doc Type: MEMORANDUM Name Organization Author: GARZA, JANIE NONE Name Organization Addressee: FERGUSO, B NONE

93061 Docid: 000394 Bates: 000394 To: 08/15/1996 Date: 1 Pages: [SCHOOL PRINCIPAL REQESTS UPDATE ON HAZARDOUS WASTE AND SAMPLING RESULTS FOUND AT BLANCHE K. BRUCE ELEMENTARY SCHOOL] Title: Doc Type: CORRESPONDENCE Name Organization Author: NEWBERRY, WESLEY G TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: MEADOURS, STENNIE TEXAS NATURAL RESOURCE CONSERVATION COMMISSION

161380 Docid: 000395 Bates: 000402 To: 09/01/1996 Date: 8 Pages: [THE ROLE OF COST IN THE SUPERFUND REMEDY SELECTION PROCESS]

Title: Doc Type: ELECTRONIC RECORD FACTSHEET Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

161375 Docid: 000403 Bates: 000429 To: 08/01/1997 Date: 27 Pages: RULES OF THUMB FOR SUPERFUND REMEDY SELECTION [OSWER 9355.0-69]

Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

161395 Docid: 000430 Bates: 000474 To: 08/01/1997 Date: 45 Pages: EXPOSURE FACTORS HANDBOOK

Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

93050 Docid: 000475 Bates: 000476 To: 10/07/1997 Date: 2 Pages: [REQUEST FOR AN EPA LEAD TIME CRITICAL REMOVAL ACTION TO ADDRESS THE IMMEDIATE THREATS POSED BY THE MANY DIVERSIFIED INTEREST SUPERFUND SITE IN THE RESIDENTIAL AREAS] Title: Doc Type: CORRESPONDENCE Name Organization Author: DAVIS, DAVID L TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: KNUDSON, MYRON O U.S. ENVIRONMENTAL PROTECTION AGENCY

Page 7 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

93198 Docid: 000477 Bates: 000478 To: 04/16/1998 Date: 2 Pages: COMMUNICATION STRATEGY FOR REMOVAL ACTION FOR THE MANY DIVERSIFIED INTEREST SUPERFUND SITE Title: Doc Type: FAX TRANSMITTAL / COVER SHEET CORRESPONDENCE Name Organization Author: NEWBERRY, WESLEY G TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: BROYLES, RAGAN U. S. ENVIRONMENTAL PROTECTION AGENCY

93048 Docid: 000479 Bates: 000483 To: 04/29/1998 Date: 5 Pages: [REQUEST FOR AN EPA TIME CRITICAL REMOVAL IN THE RESIDENTIAL AREA ADJACENT TO THE MANY DIVERSIFIED INTEREST SUPERFUND SITE] Title: Doc Type: CORRESPONDENCE Name Organization Author: DAVIS, DAVID L TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: KNUDSON, MYRON O U.S. ENVIRONMENTAL PROTECTION AGENCY

104342 Docid: 000484 Bates: 000490 To: 06/22/1998 Date: 7 Pages: POLLUTION REPORT 1 FOR THE MANY DIVERSIFIED INTERESTS SUPERFUND SITE

Title: Doc Type: REPORT / STUDY Name Organization Author: MEADOURS, STENNIE TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: GAZDA, CHARLES A U.S. ENVIRONMENTAL PROTECTION AGENCY

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

931480 Docid: 000491 Bates: 000551 To: 07/01/1998 Date: 61 Pages: [STATUS REPORT OF THE TEXAS NATURAL RESOURCE CONSERVATION COMMISSION] [CASE NO. 94-43489-H3-7] Title: Doc Type: REPORT / STUDY Name Organization Author: MORRIS, HAL F ASSISTANT ATTORNEY GENERAL Name Organization Addressee: NONE, NONE

93186 Docid: 000552 Bates: 000552 To: 07/08/1998 Date: 1 Pages: [AFFIDAVIT OF DANIEL BENSON REGARDING THE RECEIPT OF FINDINGS FOR THE MANY SITE] Title: Doc Type: AFFIDAVIT Name Organization Author: BENSON, DANIEL R TEXAS NATURAL RESOURCE CONSERVATION COMMISSION WENZEL, ELLEN R NONE Name Organization Addressee: NONE, NONE

93189 Docid: 000553 Bates: 000553 To: 07/08/1998 Date: 1 Pages: [AFFIDAVIT FOR SIDNEY CHARLES REGARDING THE RECEIPT OF FINDINGS FOR THE MANY DIVERSIFIED INTEREST SUPERFUND SITE] Title: Doc Type: AFFIDAVIT Name Organization Author: WHEAT, SIDNEY C TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: NONE, NONE

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

93173 Docid: 000554 Bates: 000555 To: 07/20/1998 Date: 2 Pages: [A RESOLUTION AUTHORIZING THE EXECUTIVE DIRECTOR OR HIS DESIGNEE TO ENTER INTO ONE OR MORE CONTRACTS TO REMOVE LEAD CONTAMINATED SOILS FROM THE MANY DIVERSIFIED INTEREST SUPERFUND SITE] Title: Doc Type: RESOLUTION Name Organization Author: MCBEE, BARRY R TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: NONE, NONE

93180 Docid: 000556 Bates: 000567 To: 07/20/1998 Date: 12 Pages: [ORDER AUTHORIZING THE USE OF FUNDS FROM THE HAZARDOUS WASTE DISPOSAL FEE FUND FOR AN IMMEDIATE REMOVAL ACTION IN THE MANY DIVERSIFIED INTEREST SUPERFUND SITE] Title: Doc Type: OTHER ORDERS Name Organization Author: MCBEE, BARRY R TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: NONE, NONE

93177 Docid: 000568 Bates: 000569 To: 07/23/1998 Date: 2 Pages: [TRANSMITTAL OF ORDER AUTHORIZING THE USE OF FUNDS FROM THE HAZARDOUS WASTE DISPOSAL FEE FUND FOR THE MANY DIVERSIFIED INTEREST SUPERFUND SITE] Title: Doc Type: MAILING LIST / CONTACT Name Organization Author: BRUMM, EUGENIA K TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: NONE, TEXAS ELECTRIC STEEL CASTING COMPANY HOWARD, ROBERT A CAN-AM RESOURCES GROUP INCORPORATED WALDRON, ROBBYE R MANY DIVERSIFIED INTERESTS INCORPORATED BENSON, DANIEL R TEXAS NATURAL RESOURCE CONSERVATION Page 10 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION Name Organization Addressee: COMMISSION NONE, SAN JACINTO FOUNDRY INCORPORATED NEHMAN, LARA TEXAS NATURAL RESOURCE CONSERVATION COMMISSION

104343 Docid: 000570 Bates: 000576 To: 07/30/1998 Date: 7 Pages: POLLUTION REPORT NUMBER 2 REPORT FOR THE MANY DIVERSIFIED INTERESTS SUPERFUND SITE Title: Doc Type: REPORT / STUDY Name Organization Author: MEADOURS, STENNIE TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: GAZDA, CHARLES A U.S. ENVIRONMENTAL PROTECTION AGENCY

93123 Docid: 000577 Bates: 000577 To: 09/03/1998 Date: 1 Pages: [EPA'S RESPONSE TO TNRCC'S REQUEST FOR A SUPERFUND REMOVAL ACTION AT THE MANY DIVERSIFIED INTERESTS SITE] Title: Doc Type: CORRESPONDENCE Name Organization Author: KNUDSON, MYRON O U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: SAITAS, JEFFERY A TEXAS NATURAL RESOURCE CONSERVATION COMMISSION

161408 Docid: 000578 Bates: 000591 To: 10/01/1998 Date: 14 Pages: MANAGEMENT OF REMEDIATION WASTE UNDER RCRA [EPA530-F-98-026]

Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Page 11 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION Name Organization Addressee: NONE, NONE

104345 Docid: 000592 Bates: 000594 To: 12/28/1998 Date: 3 Pages: SITE UPDATE: EPA, TNRCC BEGIN PLANS FOR MDI SITE CLEAN UP

Title: Doc Type: FACTSHEET Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

104344 Docid: 000595 Bates: 000600 To: 01/14/1999 Date: 6 Pages: POLLUTION REPORT NUMBER 5 FOR THE MANY DIVERSIFIED INTERESTS SUPERFUND SITE Title: Doc Type: REPORT / STUDY Name Organization Author: MEADOURS, STENNIE TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: GAZDA, CHARLES A U.S. ENVIRONMENTAL PROTECTION AGENCY

904214 Docid: 000601 Bates: 000606 To: 02/18/1999 Date: 6 Pages: POLLUTION REPORT NUMBER 7 FOR MANY DIVERSIFIED INTERESTS INCORPORATED

Title: Doc Type: REPORT / STUDY Name Organization Author: MEADOURS, STENNIE TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: GAZDA, CHARLES A U.S. ENVIRONMENTAL PROTECTION AGENCY

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

128530 Docid: 000607 Bates: 000612 To: 03/04/1999 Date: 6 Pages: POLUTION REPORT NUMBER 8 FOR MANY DIVERSIFIED INTERESTS INCORPORATED

Title: Doc Type: REPORT / STUDY Name Organization Author: MEADOURS, STENNIE TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: GAZDA, CHARLES A U.S. ENVIRONMENTAL PROTECTION AGENCY

107847 Docid: 000613 Bates: 000613 To: 05/27/1999 Date: 1 Pages: [NOTIFICATION OF TNRCC'S COMPLETION OF THE REMOVAL OF CONTAMINATED SOIL, BACKFILLING AND RESTORATION AT 89 SITES AND TRANSMITTAL OF NEWS RELEASE] Title: Doc Type: CORRESPONDENCE Name Organization Author: DAVIS, DAVID L TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: LEE, SHEILA J CONGRESS

107850 Docid: 000614 Bates: 000614 To: 06/01/1999 Date: 1 Pages: NEWS RELEASE: TNRCC COMPLETES MDI RESIDENTIAL CLEAN UP

Title: Doc Type: PRESS RELEASE Name Organization Author: NONE, TEXAS NATURAL RESOURCE CONSERVATI0N COMMISSION Name Organization Addressee: NONE, NONE

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

907283 Docid: 000615 Bates: 000615 To: 06/30/1999 Date: 1 Pages: [AGREEMENT TO TAKE LEAD AGENCY STATUS FOR REMEDIAL INVESTIGATION/FEASIBILITY STUDY] Title: Doc Type: CORRESPONDENCE Name Organization Author: CROUCH , SCOTT T TEXAS NATURAL RESOURCE CONSERVATION COMMISSION Name Organization Addressee: HONKER, WILLIAM K U.S. ENVIRONMENTAL PROTECTION AGENCY

917234 Docid: 000616 Bates: 000629 To: 08/29/2002 Date: 14 Pages: FINAL SITE MANAGEMENT PLAN FOR REMEDIAL INVESTIGATION AND FEASIBILITY STUDY

Title: Doc Type: WORK PLAN / AMENDMENT Name Organization Author: NONE, TETRA TECH EM INCORPORATED Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

917243 Docid: 000630 Bates: 000643 To: 08/29/2002 Date: 14 Pages: FINAL POLLUTION CONTROL AND MITIGATION PLAN FOR REMEDIAL INVESTIGATION AND FEASIBILITY STUDY Title: Doc Type: WORK PLAN / AMENDMENT Name Organization Author: NONE, TETRA TECH EM INCORPORATED Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

929969 Docid: 000644 Bates: 000645 To: 08/29/2002 Date: 2 Pages: COMMENTS ON THE TRANSPORTATION AND DISPOSAL PLAN FOR INVESTIGATION DERIVED WASTE Title: Doc Type: CORRESPONDENCE Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, TETRA TECH EM INCORPORATED

929972 Docid: 000646 Bates: 000646 To: 08/29/2002 Date: 1 Pages: COMMENTS ON THE HEALTH AND SAFETY PLAN

Title: Doc Type: CORRESPONDENCE Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, TETRA TECH EM INCORPORATED

917246 Docid: 000647 Bates: 000787 To: 08/29/2002 Date: 141 Pages: FINAL HEALTH AND SAFETY PLAN FOR REMEDIAL INVESTIGATION AND FEASIBILITY STUDY Title: Doc Type: REPORT / STUDY Name Organization Author: NONE, TETRA TECH EM INCORPORATED Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

917244 Docid: 000788 Bates: 000800 To: 08/29/2002 Date: 13 Pages: FINAL TRANSPORTATION AND DISPOSAL PLAN

Title: Doc Type: REPORT / STUDY Name Organization Author: NONE, TETRA TECH EM INCORPORATED Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

929992 Docid: 000801 Bates: 000802 To: 08/29/2002 Date: 2 Pages: COMMENTS ON THE SITE MANAGEMENT PLAN

Title: Doc Type: CORRESPONDENCE Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, TETRA TECH EM INCORPORATED

929995 Docid: 000803 Bates: 000804 To: 08/29/2002 Date: 2 Pages: COMMENTS ON THE POLLUTION CONTROL AND MITIGATING PLAN

Title: Doc Type: CORRESPONDENCE Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, TETRA TECH EM INCORPORATED

Page 16 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

161389 Docid: 000805 Bates: 000893 To: 09/01/2002 Date: 89 Pages: GUIDANCE FOR COMPARING BACKGROUND AND CHEMICAL CONCENTRATION IN SOIL FOR CERLCA SITES Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

917236 Docid: 000894 Bates: 000894 To: 09/03/2002 Date: 1 Pages: [TRANSMITTAL OF COMMENTS ON THE HEALTH AND SAFETY PLAN]

Title: Doc Type: CORRESPONDENCE Name Organization Author: CASANOVA, RAFAEL U. S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: FRIDAY, CANDACE TETRA TECH EM INCORPORATED

917239 Docid: 000895 Bates: 000895 To: 09/03/2002 Date: 1 Pages: [TRANSMITTAL OF COMMENTS ON THE SITE MANAGEMENT PLAN]

Title: Doc Type: CORRESPONDENCE Name Organization Author: CASANOVA, RAFAEL U. S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: FRIDAY, CANDACE TETRA TECH EM INCORPORATED

Page 17 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

917237 Docid: 000896 Bates: 000896 To: 09/03/2002 Date: 1 Pages: [TRANSMITTAL OF COMMENTS ON THE TRANSPORTATION AND DISPOSAL PLAN FOR INVESTIGATION DERIVED WASTE] Title: Doc Type: CORRESPONDENCE Name Organization Author: CASANOVA, RAFAEL U. S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: FRIDAY, CANDACE TETRA TECH EM INCORPORATED

917238 Docid: 000897 Bates: 000897 To: 09/03/2002 Date: 1 Pages: [TRANSMITTAL OF COMMENTS ON THE POLLUTION CONTROL AND MITIGATION PLAN]

Title: Doc Type: CORRESPONDENCE Name Organization Author: CASANOVA, RAFAEL U. S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: FRIDAY, CANDACE TETRA TECH EM INCORPORATED

923232 Docid: 000898 Bates: 000898 To: 11/21/2002 Date: 1 Pages: CATALYST / SLAG ANALYSIS

Title: Doc Type: E-MAIL MESSAGE Name Organization Author: FRIDAY, CANDACE TETRA TECH EM INCORPORATED Name Organization Addressee: CASANOVA, RAFAEL U. S. ENVIRONMENTAL PROTECTION AGENCY

Page 18 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

161392 Docid: 000899 Bates: 000930 To: 12/02/2002 Date: 32 Pages: CALCULATING UPPER CONFIDENCE LIMITS FOR EXPOSURE POINT CONCENTRATIONS AT HAZARDOUS WASTE SITES Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

923521 Docid: 000931 Bates: 000938 To: 12/19/2002 Date: 8 Pages: [COMMENTS REGARDING DRAFT QUALITY ASSURANCE PROJECT AND DRAFT FIELD SAMPLING PLAN] Title: Doc Type: MEMORANDUM Name Organization Author: CASANOVA, RAFAEL U. S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: BENNETT, STACEY U. S. ENVIRONMENTAL PROTECTION AGENCY

923489 Docid: 000939 Bates: 000941 To: 12/24/2002 Date: 3 Pages: PROPOSED REVISIONS TO THE MDI APPROVED WORK PLAN BUDGET CONTRACT NUMBER 68-W6-0037, WA NUMBER 107-RICO-06CN Title: Doc Type: MEMORANDUM Name Organization Author: BENNETT, STACEY U. S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: STANLEY, CORA U.S. ENVIRONMENTAL PROTECTION AGENCY

Page 19 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

943673 Docid: 000942 Bates: 000942 To: 03/26/2003 Date: 1 Pages: [TRANSMITTAL OF THE FIELD SAMPLING PLAN REVISION 2]

Title: Doc Type: CORRESPONDENCE Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY

943674 Docid: 000943 Bates: 001341 To: 03/26/2003 Date: 399 Pages: FIELD SAMPLING PLAN REVISION 02

Title: Doc Type: WORK PLAN / AMENDMENT ELECTRONIC RECORD Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

169979 Docid: 001342 Bates: 001487 To: 03/27/2003 Date: 146 Pages: QUALITY ASSURANCE PROJECT PLAN REVISION 02

Title: Doc Type: WORK PLAN / AMENDMENT ELECTRONIC RECORD Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

Page 20 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

943675 Docid: 001488 Bates: 001488 To: 03/27/2003 Date: 1 Pages: [TRANSMITTAL OF THE QUALITY ASSURANCE PROJECT PLAN REVISION 02]

Title: Doc Type: CORRESPONDENCE Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY

160906 Docid: 001489 Bates: 001601 To: 05/09/2003 Date: 113 Pages: SUMMARY OF SAMPLING RESULTS FOR THE BLANCHE KELSO BRUCE ELEMENTARY SCHOOL Title: Doc Type: SAMPLING / ANALYSIS Name Organization Author: NONE, TETRA TECH EM INCORPORATED Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

929863 Docid: 001602 Bates: 001603 To: 06/01/2003 Date: 2 Pages: COMMUNITY MEETING MANY DIVERSIFIED INTERESTS (TESCO) SUPERFUND SITE

Title: Doc Type: NOTICE ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

Page 21 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

161382 Docid: 001604 Bates: 001727 To: 08/01/2003 Date: 124 Pages: SUPERFUND LEAD-CONTAMINATED RESIDENTIAL SITES HANDBOOK FINAL

Title: Doc Type: ELECTRONIC RECORD REPORT / STUDY Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

190282 Docid: 001728 Bates: 001738 To: 10/14/2003 Date: 11 Pages: EXPLORATORY ANALYSIS OF SOIL DATA FOR THE MANY DIVERSIFIED INTERESTS INCORPORATED SITE Title: Doc Type: SAMPLING / ANALYSIS Name Organization Author: ENGLUND, EVAN J U. S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

951248 Docid: 001739 Bates: 002178 To: 12/15/2003 Date: 440 Pages: [DATA EVALUATION SUMMARY REPORT FOR OPERABLE UNIT 2]

Title: Doc Type: ELECTRONIC RECORD REPORT / STUDY Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

Page 22 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

169224 Docid: 002179 Bates: 002180 To: 12/18/2003 Date: 2 Pages: [CONCURRENCE COPY OF THE RESPONSE TO THE SEPTEMBER 15, 2003 LETTER REGARDING THE SUPERFUND REMOVAL ACTION] Title: Doc Type: CORRESPONDENCE Name Organization Author: COLEMAN, SAMUEL U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: RACKLEFF, NEAL HOUSING AUTHORITY OF THE CITY OF HOUSTON

936987 Docid: 002181 Bates: 002249 To: 02/13/2004 Date: 69 Pages: PROPOSED PLAN ADMINISTRATIVE RECORD INDEX FOR MANY DIVERSIFIED INTEREST

Title: Doc Type: INDEX Name Organization Author: NONE, SCIENCE APPLICATIONS INTERNATIONAL CORPORATION GEOMARINE, INCORPORATION Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

164864 Docid: 002250 Bates: 003744 To: 03/01/2004 Date: 1495 Pages: REMOVAL REPORT FOR MDI OFF-SITE PROPERTIES

Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: BECK, ROBERT WESTON SOLUTIONS INCORPORATED Name Organization Addressee: CARTER, LINDA U.S. ENVIRONMENTAL PROTECTION AGENCY

Page 23 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

190281 Docid: 003745 Bates: 003759 To: 03/22/2004 Date: 15 Pages: MICROSCOPY ANALYSIS OF LEAD-CONTAMINATED SOILS

Title: Doc Type: SAMPLING / ANALYSIS ELECTRONIC RECORD Name Organization Author: NONE, NONE Name Organization Addressee: NONE, NONE

951249 Docid: 003760 Bates: 003760 To: 03/22/2004 Date: 1 Pages: [TRANSMITTAL OF THE MICROSCOPY ANALYSIS OF LEAD-CONTAMINATED SOILS]

Title: Doc Type: ELECTRONIC RECORD SAMPLING / ANALYSIS Name Organization Author: PEARSON, GARETH U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: CASANOVA, RAFAEL U.S. ENVIRONMENTAL PROTECTION AGENCY

169304 Docid: 003761 Bates: 003762 To: 05/26/2004 Date: 2 Pages: [TRANSMITTAL OF THE FIELD SAMPLING PLAN ADDENDUM FOR THE PHASE II INVESTIGATION] Title: Doc Type: CORRESPONDENCE Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY

Page 24 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

943663 Docid: 003763 Bates: 003779 To: 05/26/2004 Date: 17 Pages: FIELD SAMPLING PLAN ADDENDUM REVISION NO. 3

Title: Doc Type: WORK PLAN / AMENDMENT Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

169790 Docid: 003780 Bates: 003785 To: 06/14/2004 Date: 6 Pages: FIELD ACTIVITIES SUMMARY REPORT - PHASE II INVESTIGATION

Title: Doc Type: SAMPLING / ANALYSIS Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY

170590 Docid: 003786 Bates: 004035 To: 07/30/2004 Date: 250 Pages: RECORD OF DECISION FOR OPERABLE UNIT 1: ON-SITE SOILS AND GROUND WATER

Title: Doc Type: RECORD OF DECISION / AMENDMENT ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

Page 25 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

951687 Docid: 004036 Bates: 004117 To: 06/01/2005 Date: 82 Pages: [REDACTED]REMOVAL REPORT ADDENDUM FOR MANY DIVERSIFIED INTERESTS, INCORPORATED OFF - SITE PROPERTIES Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, WESTON SOLUTIONS INCORPORATED Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

190666 Docid: 004118 Bates: 004128 To: 07/05/2005 Date: 11 Pages: SITE STATUS SUMMARY FOR THE MANY DIVERSIFIED INTERESTS INCORPORATED SUPERFUND SITE Title: Doc Type: ELECTRONIC RECORD FACTSHEET Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

191059 Docid: 004129 Bates: 004136 To: 07/25/2005 Date: 8 Pages: HIGH INTENSITY TARGETED SCREENING PROJECT / CITY OF HOUSTON CHILDHOOD LEAD POISONING PREVENTION PROGRAM Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, NONE Name Organization Addressee: NONE, NONE

Page 26 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

191142 Docid: 004137 Bates: 004159 To: 07/28/2005 Date: 23 Pages: [REQUEST FOR CEILING INCREASE AND AMENDMENT TO THE ACTION MEMORANDUM AT THE HIGH ACCESS AREAS OF THE MANY DIVERSIFIED INTERESTS, INCORPORATED SUPERFUND SITE] Title: Doc Type: MEMORANDUM Name Organization Author: FIFE, GREGORY E U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: COLEMAN, SAMUEL U.S. ENVIRONMENTAL PROTECTION AGENCY BROYLES, RAGAN U.S. ENVIRONMENTAL PROTECTION AGENCY

191204 Docid: 004160 Bates: 004179 To: 07/28/2005 Date: 20 Pages: PROPOSED PLAN FOR OPERABLE UNIT 2 (OFF-SITE RESIDENTIAL YARDS AND HIGH ACCESS AREAS) Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

191206 Docid: 004180 Bates: 004211 To: 07/29/2005 Date: 32 Pages: FEASIBILITY STUDY FOR OPERABLE UNIT 2 (OFF-SITE RESIDENTIAL YARDS AND HIGH ACCESS AREAS) Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY CASANOVA, RAFAEL U.S. ENVIRONMENTAL PROTECTION AGENCY Page 27 of 33 10/05/2005

### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

950698 Docid: 004212 Bates: 004213 To: 07/29/2005 Date: 2 Pages: [TRANSMITTAL OF THE FEASIBILITY STUDY FOR OPERABLE UNIT 2 (OFF-SITE RESIDENTIAL YARDS AND HIGH ACCESS AREAS)] Title: Doc Type: CORRESPONDENCE ELECTRONIC RECORD Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY

950701 Docid: 004214 Bates: 004215 To: 07/29/2005 Date: 2 Pages: [TRANSMITTAL OF THE REMEDIAL INVESTIGATION REPORT FOR OPERABLE UNIT 2 (OFFSITE RESIDENTIAL YARDS AND HIGH ACCESS AREAS)] Title: Doc Type: ELECTRONIC RECORD CORRESPONDENCE Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY

950702 Docid: 004216 Bates: 004230 To: 07/29/2005 Date: 15 Pages: [TETRA TECH EM INCORPORATED'S RESPONSE TO COMMENTS FOR THE REMEDIAL INVESTIGATION / FEASIBILITY STUDY / HUMAN HEALTH RISK ASSESSMENT REPORTS FOR Title: Doc Type: ELECTRONIC RECORD CORRESPONDENCE Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

950700 Docid: 004231 Bates: 004232 To: 07/29/2005 Date: 2 Pages: [TRANSMITTAL OF THE HUMAN HEALTH RISK ASSESSMENT FOR OPERABLE UNIT 2 (OFFSITE RESIDENTIAL YARDS AND HIGH ACCESS AREAS)] Title: Doc Type: ELECTRONIC RECORD CORRESPONDENCE Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY

191207 Docid: 004233 Bates: 005984 To: 07/29/2005 Date: 1752 Pages: REMEDIAL INVESTIGATION FOR OPERABLE UNIT 2 (OFF-SITE RESIDENTIAL YARDS AND

Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY

191208 Docid: 005985 Bates: 006399 To: 07/29/2005 Date: 415 Pages: HUMAN HEALTH RISK ASSESSMENT FOR OPERABLE UNIT 2 (OFF-SITE RESIDENTIAL YARDS AND HIGH ACCESS AREAS) Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: VEGA, LUIS TETRA TECH EM INCORPORATED Name Organization Addressee: BENNETT, STACEY U.S. ENVIRONMENTAL PROTECTION AGENCY

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

191215 Docid: 006400 Bates: 006400 To: 08/01/2005 Date: 1 Pages: [ENGLISH VERSION] NEWSPAPER PUBLIC NOTICE FOR PROPOSED PLAN FOR OPERABLE UNIT 2 (OFF-SITE RESIDENTIAL YARDS AND HIGH ACCESS AREAS) Title: Doc Type: ELECTRONIC RECORD NOTICE Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

191216 Docid: 006401 Bates: 006401 To: 08/01/2005 Date: 1 Pages: [SPANISH VERSION] NEWSPAPER PUBLIC NOTICE FOR PROPOSED PLAN FOR OPERABLE UNIT 2 (OFF-SITE RESIDENTIAL YARDS AND HIGH ACCESS AREAS) Title: Doc Type: ELECTRONIC RECORD MEDIA CLIPPING NOTICE Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

191234 Docid: 006402 Bates: 006404 To: 08/01/2005 Date: 3 Pages: FACT SHEET: PROPOSED PLAN FOR OPERABLE UNIT 2 (OFF-SITE RESIDENTIAL YARDS AND HIGH ACCESS AREAS) Title: Doc Type: ELECTRONIC RECORD FACTSHEET Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

191418 Docid: 006405 Bates: 006437 To: 08/08/2005 Date: 33 Pages: PROPOSED PLAN ADMINSTRATIVE RECORD INDEX FOR THE MANY DIVERSIFIED INTERESTS SUPERFUND SITE OPERABLE UNIT 2 Title: Doc Type: INDEX ELECTRONIC RECORD Name Organization Author: NONE, SCIENCE APPLICATIONS INTERNATIONAL CORPORATION Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

193697 Docid: 006437.001 Bates: 006437.001 To: 08/11/1999 Date: 1 Pages: [DOI PARTICIPATION IN SUPERFUND PLANNING PROCESS APPEARS TO BE UNNECESSARY] Title: Doc Type: CORRESPONDENCE Name Organization Author: SEKAVEC, GLENN DEPARTMENT OF INTERIOR Name Organization Addressee: WILLIAMS, RUBY U.S. ENVIRONMENTAL PROTECTION AGENCY

192641 Docid: 006438 Bates: 006488 To: 08/16/2005 Date: 51 Pages: [U.S. EPA PUBLIC MEETING REGARDING THE MANY DIVERSIFIED INTERESTS, INCORPORATED (MDI, TESCO) SUPERFUND SITE] Title: Doc Type: PUBLIC MEETING TRANSCRIPT Name Organization Author: ANTONE, PEGGY A ALLIED ADVANCED REPORTING INCORPORATED Name Organization Addressee: NONE, NONE

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

951835 Docid: 006489 Bates: 006492 To: 09/01/2005 Date: 4 Pages: COMMENTS ON THE MDI SUPERFUND SITE REMEDIAL INVESTIGATION AND FEASIBILITY STUDY REPORTS FOR OU 2, DATED 07/29/2005] Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: NONE, FIFTH WARD CHAPTER OF MOTHERS FOR CLEAN AIR Name Organization Addressee: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY

192633 Docid: 006493 Bates: 006493 To: 09/01/2005 Date: 1 Pages: [TRANSMITTAL OF COMMENTS ON THE MDI SUPERFUND SITE REMEDIAL INVESTIGATION AND FEASIBILITY STUDY REPORTS FOR OU 02, DATED 07/29/2005] Title: Doc Type: REPORT / STUDY ELECTRONIC RECORD Name Organization Author: FULLER, RICHARD H SOUND ENVIRONMENTAL SOULUTIONS INC. Name Organization Addressee: CASANOVA, RAFAEL U.S. ENVIRONMENTAL PROTECTION AGENCY

193699 Docid: 006494 Bates: 006638 To: 09/23/2005 Date: 145 Pages: RECORD OF DECISION OPERABLE UNIT 2, OFF-SITE RESIDENTIAL YARDS AND HIGH

Title: Doc Type: RECORD OF DECISION / AMENDMENT Name Organization Author: NONE, U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: NONE, NONE

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### ADMINISTRATIVE RECORD INDEX 10/05/2005 ADMINISTRATIVE RECORD Site Name: CERCLIS: OUID: SSID: Action: MANY DIVERSIFIED INTERESTS INC. TXD008083404 02 CN RECORD OF DECISION

193698 Docid: 006639 Bates: 006645 To: 10/04/2005 Date: 7 Pages: [DENIED ACCESS FOR EPA TO CONDUCT A REMOVAL ACTION AT THE KELLY VILLAGE HOUSING COMPLEX] Title: Doc Type: CORRESPONDENCE Name Organization Author: COLEMAN, SAMUEL U.S. ENVIRONMENTAL PROTECTION AGENCY Name Organization Addressee: ALLISON, HORACE C HOUSTON HOUSING AUTHORITY

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# APPENDI X BKathlee n Hartnet t White , Chairman R . B . "Ralph " Marquez , Commissione r Larr y R . Soward , Commissione r Glen nShankle , Executiv e Directo r 

# TEXA S COMMISSIO NO NENVIRONMENTA LQUALIT Y

Protectin g Texas b y Reducin g an dPreventin g Pollutio n

September

14 , 200 5

Mr . Richar dE . Greene , Regiona l Administrato r (6RA ) U.S . Environmenta l Protectio n Agenc y Regio n 6 1445 Ros s Avenue , Suit e 1200 Dallas , Texa s 7520 2 Re : Recordo f

Decision , Operabl e Uni t

2 , Off-Sit e Residentia l Soil s an dHig hAcces s Area s Man y Diversifie dInterests , Inc . Superfun dSite , TXD00808340 4 Houston , Texa s Dea r Mayo r Greene : Th e Texa s Commissio n o n Environmenta l Quality ha s complete drevie w o f th e above-reference d Recor do f Decision . W e concu r

wit hth e findin g that , du e t o th e effec t o f complete dremova l actions , n o furthe r

respons e actio n i s require dto addres s risk s formerl y presente db y Operabl e Uni t 2 , Off-Sit e Residentia l Soil s an dHig hAcces s Areas , Man y Diversifie dInterests , Inc . Superfun dSite .

Tay Carsten , Manage r Environmenta l Cleanu p Sect : o n Remediatio n Divisio n JC/AE/c w

P.O . Bo x 13087 • Austin , Texa s 78711-308 7 • 512/239-100 0 • Interne t address : www.tceq.state.tx.u s

# APPENDI X C942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 1

U.S. EPA REGION 6 MANY DIVERSIFIED INTERESTS, INC. (MDI, TESCO) SUPERFUND SITE PUBLIC MEETING HOUSTON, TEXAS 8-16-2005

Reported By: Peggy Ann Antone, CSR, RMR, CRR Allied Advanced Reporting, Inc. 1647 Colquitt Houston, Texas 77006 713.524.6777 1.800.223.9409942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 2 1 P R O C E E D I N G S 2 MR. JOHN HEPOLA: Okay. We're going to 3 open the public meeting now. First, I'd like to thank 4 everyone for coming out tonight. Everyone has a lot of 5 19:11 things to do and I appreciate everyone being here.

6 My name is John Hepola, and I'm the 7 chief of the Arkansas-Texas Superfund branch with EPA 8 Region 6 in Dallas, Texas. There are several other EPA 9 employees with me tonight: The remedial project 10 19:12 managers -- Rafael Casanova is here, Stacey Bennett,

11 who will be speaking later -- and Gus Chavarria in the 12 back over there, the remedial supervisor. Donn Walters 13 is our community involvement coordinator. 14 And we also have a gentleman from 15 19:12 Houston Housing Authority, Jay Patel. Is there anyone

16 else representing any organization from the city or the 17 state? 18 MR. BRAD RAFFLE: We're together. 19 MR. JOHN HEPOLA: You're together. 20 19:12 MR. BRAD RAFFLE: I'm with Baker, Botts.

21 We work sometimes with the Housing Authority. 22 MR. RAFAEL CASANOVA: Richard Fuller 23 with the TAG group. 24 MR. JOHN HEPOLA: And Richard Fuller 25 19:12 with the TAG group. Thank you very much.942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 3 1 The purpose of tonight's meeting is to 2 present the Proposed Plan for the OU2, which is the 3 residential yards and high access areas of the MDI 4 Superfund site, and we have a court reporter who's 5 19:12 making a transcript of the proceedings, and that will

6 be available in the administrative record. 7 EPA is issuing this Proposed Plan in 8 accordance with its public participation and 9 responsibilities under the Comprehensive Environmental 10 19:13 Response Compensation and Liability Act or, as we call

11 it, the Superfund law, and the National Oil and 12 Hazardous Substance Pollution Contingency Plan. 13 The recommendations in the Proposed 14 Plans have -- are based on the administrative file, 15 19:13 which is available locally over in the Fifth Ward Multi

16 Service Building if you have an interest in seeing it. 17 It's also available in the EPA office in Dallas, Texas. 18 What we hope to do is present the plan 19 tonight, and we will take any comments you have. The 20 19:13 comment period is actually open until September the

21 8th, and you can provide comments to Rafael Casanova at 22 the address in the handout sheet that is available on 23 the table over there. 24 Once EPA reviews the comments, we will 25 19:14 prepare a responsiveness summary based on public942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 4 1 comments, and that will become part of the Record of 2 Decision, which lays out the final remedy that we will 3 select, and that will then also become part of 4 the official record. 5 19:14 So I'm going to now turn it over to

6 Stacey, who will present the Proposed Plan for OU2, and 7 we'll go from there. Stacey. 8 MS. STACEY BENNETT: Thank you, John. 9 Can y'all hear me? Do I need a mic? 10 19:14 Okay. I'll go ahead and use the -- use

11 the mic so that the court reporter can hear me, as 12 well. There we go. 13 Okay. The many diversified interests 14 Superfund site. What John talked about during his 15 19:15 presentation was that we're only going to deal with

16 Operable Unit 2. What EPA did was divide the site into 17 smaller portions so that we could address certain areas 18 so that it wouldn't hold up the whole site. 19 So Operable Unit 1, which we wrote a 20 19:15 Record of Decision on last year, dealt with the actual

21 facility, inside the fenced properties; okay? 22 Operable Unit 2, which is the subject of 23 our meeting tonight, deals only with the residential 24 yards and what we call high access areas. High access 25 19:15 areas are your churches, your schools, playgrounds, and942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 5 1 daycares. Okay? So that's what we're going to deal 2 with tonight. 3 And this is just a picture of Operable 4 Unit 1, which is on the property itself. 5 19:16 We've already discussed about the

6 purpose of the meeting and -- okay. Our proposed 7 remedy that we're going to talk to you about tonight is 8 no further action needed on the residential yards for 9 which EPA sampled and got access to. We're going to 10 19:16 talk a little bit more later on about the properties in

11 which we did not get access to and what's our plan for 12 addressing those. 13 And then at the end of the meeting, 14 we'll have comments on Operable Unit 2, which is what 15 19:16 we're getting ready to talk about, which are the

16 residential yards and high access areas. 17 Okay. The first thing we want to talk 18 about is our strategy for the residential sampling; 19 okay? One of the things when we first met with the 20 19:16 community back in June of 2003 and we had an

21 informational meeting during that time, one of the 22 things that the residents were concerned with was that 23 they felt like previous investigations did not address 24 all the properties that could have been affected by the 25 19:17 air from the result of the foundry. So what EPA did942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 6 1 was we came up with an air dispersion model so that we 2 could determine: What are the boundaries for the 3 residential areas? 4 Secondly, during the meeting, a lot of 5 19:17 youall told us that there were areas or houses that you

6 knew that people had taken gravel and sand from the 7 foundry and had put it in their yards, so we also 8 wanted to address that, also, during this sampling that 9 we did. 10 19:17 And then, thirdly, we had some comments

11 during that initial meeting in which people stated that 12 they felt like there was contamination underneath their 13 homes -- in other words, in the crawl spaces -- and so 14 what we agreed to do was do some sampling beneath the 15 19:18 houses in only limited areas; okay?

16 And this is the area -- the boundaries 17 of the study area for Operable Unit 2, for the 18 residential areas. 19 And I'm going to let Rafael talk more 20 19:18 about how we arrived at these boundaries and what all

21 this means. 22 MR. RAFAEL CASANOVA: Early on in the 23 investigation, we realized that we had to set some 24 special boundaries for the investigation; otherwise, 25 19:18 we'd be sampling forever, I think, and I think you -- I942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 7 1 really think you'd find lead in a lot of places that 2 really wasn't -- that really didn't come from the 3 foundry. 4 So the best way, we thought, to go about 5 19:18 it, since there was a foundry problem where we would

6 have air emissions from the foundry, and what we needed 7 to find was where particulates containing lead would 8 have been emitted from the foundry, we decided to do an 9 air dispersion modeling. We did the industrial source 10 19:19 complex, long-term model, and it's basically a computer

11 model. So we input data, all the data that we had 12 about the foundry. We used conservative assumptions 13 about the foundry, and we came up with an isopleth, and 14 an isopleth is this purple area. This is what the 15 19:19 model predicted would be deposited on the ground, and

16 what this means is -- an isopleth is an equal line of 17 concentration or line of equal concentration, and it 18 equals to 400 milligram per kilogram of lead. 19 And this is what the -- what the model 20 19:19 predicted. So we decided, you know, we think we have a

21 conservative model, and we decided that was going to be 22 our study area. 23 So we sampled every home within this air 24 dispersion predictive modeling, every home. We didn't 25 19:20 sample industrial areas, because that wasn't the942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 8 1 subject our -- of our investigation. We sampled some 2 crawl spaces. We sampled schools, daycare centers, 3 churches, and then there was an area down here that 4 wasn't accounted for in the model. Some people 5 19:20 reported to us that live in this area, said that there

6 used to be some blowers here that would constantly blow 7 in that direction. So we decided to extend the study 8 area to include this area. 9 So the area that we studied in the 10 19:20 remedial investigation in January of 2003 was this

11 entire area predicted by the model and then this 12 blowdown area over here. 13 These other areas were actually studied 14 by the Texas Commission on Environmental Quality back 15 19:21 in 1998.

16 So this was the entire study area. 17 MS. STACEY BENNETT: Okay. Like Rafael 18 said, that's the diagram, so you can look at that and 19 see all of the areas that we did study, so everything 20 19:21 that's within the purple area, as well as the yellow

21 area, at some point in time, whether it was EPA or 22 whether it was the state, which is the Texas Commission 23 of Environmental Quality, did sampling in those yards. 24 Okay? And, again, that's for properties in which we 25 19:21 got access to.942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 9 1 Our scheme for sampling is that we look 2 at a 2500-cubic-yard -- 3 MR. RAFAEL CASANOVA: Square foot. 4 MS. STACEY BENNETT: -- square-foot 5 19:22 area, and so normally what we did was we divided,

6 depending on how your house is located on the property, 7 you had a front yard and a backyard, and we took five 8 samples in the front yard and five samples in the 9 backyard, and we took them at different depths. Okay? 10 19:22 And what we did was we put all those

11 samples together, so, in other words, if we sampled at 12 half a foot, the five points, they were compositted 13 together, and that's how we got our concentration that 14 was in your yard. 15 19:22 We collected soil samples to a depth of

16 18 inches below the ground surface. We analyzed the 17 samples for lead and also other metals. And we used 18 what we call an XRF analyzer, and, basically, it's just 19 an instrument to where you put it down in the ground 20 19:22 and it tells you instantaneously what the concentration

21 is for lead. 22 Now, if you kind of think back to that 23 particular map that we had, there are 418 properties 24 within that purple area as well as the yellow area, 25 19:23 that kind of outline. 19 were industrial properties,942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 10 1 of which we did not sample. Okay? Because that was 2 not the purpose of this particular study. 3 181 properties is what EPA sampled 4 during our investigation. 5 19:23 106 properties had been previously

6 sampled by the state, TCEQ, as well as EPA under some 7 other previous investigations. 8 And then there were 112 properties that 9 we did not sample because we could not get access to 10 19:23 those properties. We'll talk about that a little bit

11 later. 12 Now, once we looked at the results of 13 those samples, we had to come up with a criteria, and 14 what we did was, because we know that children play in 15 19:23 the area and we didn't want to wait until -- normally,

16 the process is, after we determine what the 17 contamination is, then we normally do like we're doing 18 tonight, we have a Proposed Plan, then we write a 19 Record of Decision, and then later on we do a cleanup 20 19:24 action.

21 But what we decided to do was to move 22 things a whole lot faster. We have a group in our 23 agency called emergency response, and what we did is 24 because we know that children are more susceptible to 25 19:24 lead contamination, we used their authority so that we942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 11 1 could do a cleanup at the time that we discovered that 2 there were high concentrations. 3 So we had a -- basically, a priority 4 scale. High access areas were first. 5 19:24 In other words, Bruce Elementary School,

6 the Fifth Ward Community Center, and any vacant lots, 7 because people have access to that, or children could 8 have access to those, those were the areas that we 9 cleaned up first, or, rather, that's the ones that we 10 19:24 had first priority.

11 Second priority were residential 12 properties for which there were documented cases to 13 where children had high blood levels. Okay? 14 Third priority were residential 15 19:25 properties with pregnant mothers or children that were

16 less than four years of age. 17 Then we did residential properties with 18 children between the ages of four and seven that 19 were -- that were above the 500 parts per million lead. 20 19:25 Then any residential property that was

21 greater than 1200. 22 And then residential properties which 23 were greater than or equal to 500. 24 So, in other words, we addressed every 25 19:25 property that was 500 parts per million lead.942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 12 1 Now, when we did our cleanup, we made 2 sure, because with the XRF, you want to make sure, 3 because that's an instantaneous reading, so what we did 4 was we compensated for, in case there may be a margin 5 19:25 of error with our instruments, so we actually cleaned

6 up to 463 parts per million lead, and that's just to 7 account for the instrument in case there were 8 differences in the reading for the instrument. 9 Okay. So based on the study area that 10 19:26 we talked about, we talked about the number of

11 properties that EPA actually addressed or sampled, 12 which was 181. We actually, out of that 181, found out 13 that 59 properties were above the 500 parts per million 14 lead, and so we actually did a cleanup. We started the 15 19:26 cleanup in November of 2003, and we finished in June of

16 2005, which was two months ago. 17 TCEQ had previously conducted a cleanup 18 for 89 properties, and they did that back in 1998 to 19 1999, and that was based on the 106 properties that 20 19:26 they sampled that were located to the west of the

21 property. 22 And these are just some pictures of what 23 we actually did. We actually go in, depending on your 24 yard, we excavate down to whatever the contamination is 25 19:27 that we've determined is the level at which it's 500,942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 13 1 so we dug as deep as we could to address that, and we 2 did -- I think no property was over 18 inches that we 3 cleaned up, and then we backfilled with clean soil and 4 then we put seeds down for the grass to grow. 5 19:27 Now, here's a map that kind of shows you

6 everything, whether it was EPA or the Texas Commission 7 of Environmental Quality. 8 Okay. Looking at the study area, 9 everything that you see in yellow are the industrial 10 19:27 properties, so we did not look at those.

11 Everything that you see in green, EPA or 12 TCEQ sampled. If the green area has hatched marks in 13 it, that means that those properties were determined to 14 be above 500 parts per million lead and we did an 15 19:28 actual cleanup of those properties.

16 The areas that you see in red are part 17 of the 112 properties that we did not get access to, 18 so, therefore, those properties were not sampled. 19 Okay? 20 19:28 Now, there's one area that we haven't

21 talked about -- I talked about how we cleaned up all of 22 the residential properties above 500 and high access 23 areas. There's only one other area that we need to 24 address and that is Kelly Village, and they're really 25 19:28 considered a high access area, they're really not942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 14 1 considered a residential property, and what we 2 discovered when we did the sampling for Kelly 3 Village -- Kelly Village is just on the edge of our 4 study area, based on the air model; okay? And we 5 19:28 sampled these -- I think it's -- you can't see how many

6 complex -- I don't know if you call them three separate 7 complexes in a courtyard type area, and we sampled 8 within there, and what you see, when you see the square 9 areas, we divided them up into approximately 2500 10 19:29 square feet, because that's what we would do for a

11 residential area. 12 And then what we did was we sampled, 13 just like we would a residential yard. 14 And what we found is, even though there 15 19:29 was no contamination at the surface, which means from

16 zero to half a foot, we did find levels above 500 from 17 half a foot to a foot. 18 Now, normally, because you have a good 19 surface, you have -- there's no contamination on the 20 19:29 surface, you have a great grass cover, no one is being

21 exposed. But because we know that there's a lot of 22 construction activities going on in the Fifth Ward 23 area, we decided to go ahead and ask for permission to 24 go ahead and address those properties. And that's why 25 19:30 we're working with the Housing Authority to address942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 15 1 those nine areas, and I know it's kind of hard to see 2 on this diagram, but there's one area right here. 3 That's the first one. This is the second one, the 4 third one, the fourth one, the fifth one, the sixth 5 19:30 one. The seventh one is this whole area.

6 I think I'm missing two. It's nine -- 7 it's kind of hard -- oh, here -- here are the other 8 two. Seven, eight, nine. 9 So those are the nine areas in which at 10 19:30 half a foot to a foot, in which there are

11 concentrations above the 500 parts per million lead. 12 And we just want to go ahead and address those, because 13 we just don't want in the future for some type of 14 construction activity to where that material would be 15 19:30 placed on the surface, and even if it were placed on

16 the surface, you have to realize that our models are 17 based on a child playing in that area for seven years. 18 So they'd have to be exposed daily for seven years, 19 really, to have an effect on them. 20 19:31 MR. ALVIN BYRD: It doesn't -- it just

21 doesn't mean digging. You just -- you mean, they have 22 to be exposed -- 23 MS. STACEY BENNETT: Right. 24 MR. ALVIN BYRD: -- every day for seven 25 19:31 years, just playing in that particular area?942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 16 1 MS. STACEY BENNETT: Right. Right. 2 Right. In order for it to be -- to be a problem. Just 3 because you expose it to the surface, if no one comes 4 in contact with that -- and we're talking about a child 5 19:31 getting the soil on their hand and then it being

6 ingested -- so that's what it would -- would be, if 7 they were exposed over a period of seven years, then it 8 would be a problem. And that's the same way, really, 9 for the residential properties, too, you know, they 10 19:31 would have to be exposed over a period of years for

11 there to be really a risk to that particular child. 12 One of the things that we did after we 13 completed our investigation was we issued what we call 14 comfort letters to all of the residents, so everything 15 19:31 that was in green, everyone should have received a

16 letter. 17 The comfort letter, you had one of two 18 comfort letters. One said, "We sampled your property 19 and we did not find anything above 500." Okay? 20 19:32 Or you could have gotten a second letter

21 which said, "We sampled your property, it was above 22 500, and we did a cleanup of your property, and, 23 therefore, you can use this letter to document later on 24 that your property has been cleaned, that there is no 25 19:32 lead there."942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 17 1 For that reason, for the 181 properties 2 that we sampled, EPA's conclusion is that there's no 3 further remedial action that we need to do. I mean, 4 we've already conducted the cleanup of those properties 5 19:32 that are above what we call our action level of 500

6 parts per million. We cleaned up 59. The Texas 7 Commission of Environmental Quality cleaned up 89. 8 We're in the process of working with the Housing 9 Authority so that we can get Kelly Village addressed. 10 19:33 So for the properties that we looked at, there's

11 nothing more in the process that we could do. 12 Okay. Some other conclusions that 13 you'll find, if you read the documents that are placed 14 in the repository, one of the things that Rafael talked 15 19:33 about early on was that when we started this

16 investigation, we told the residents at that time that 17 EPA can only address contamination that is a result of 18 the foundry operations. So, in other words, if there 19 are other sources out there, under our authority, we 20 19:33 cannot address those properties.

21 Now, one of the things that we did find 22 is we did three different studies: Ratio of the metals 23 in soils, scatter plots of metals by location, and, 24 also, microscopic techniques, and I'm going to let 25 19:34 Rafael just talk briefly about those studies and who942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 18 1 conducted those studies for us just so that you have 2 that as background information. 3 MR. RAFAEL CASANOVA: For the ratios of 4 metals in soils, what we did was we compared the ratios 5 19:34 of certain metals on the site, the -- within the

6 boundaries of the site itself. We used some -- we also 7 took the ratios of metals from the off site areas in 8 the residential areas and we compared them, and the 9 ratios were totally different. You could see a pattern 10 19:34 where they were just totally different. They didn't

11 compare to each other. 12 So from that we concluded that the 13 foundry was not the source of widespread contamination. 14 It could have contributed some, but we didn't think it 15 19:34 was -- it was the source of widespread contamination.

16 We also did -- we also had our Las Vegas 17 lab do some scatter plots. These are basically 18 statistical plots where it looks for the distribution 19 of metals, of certain metals. So we took all these 20 19:35 metals, and we plotted these scatter plots, and what

21 you could see is, if you could visualize, some red 22 dots, some blue dots, some green dots. And say that 23 these are metals from background, these are metals from 24 the onsite, and these are metals from off site, and 25 19:35 when we compared we those, you could see the942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 19 1 distribution was totally different. Based on the 2 scatter plots, they were in totally different areas. 3 If they would have been related in any way, they would 4 have been closer together. So you could see the 5 19:35 distribution was very, very wide -- different using the

6 scatter plots. 7 The microscopic techniques, we actually 8 used electronmicro -- scanning electron microscopes 9 when we looked at the smallest particles of soil, and 10 19:35 what we were trying to do there, we were trying to look

11 for marker compounds, where we looked at soils from the 12 site itself, we looked at soils from the residential 13 areas, and we also looked at soils from bag house. 14 What bag house is, is using a process that the foundry 15 19:36 used, it was used like a filter, so we thought that if

16 we saw the marker compounds from the bag house or the 17 onsite and compared them to the soils in the 18 residential areas that we could conclude that maybe the 19 foundry did cause a lot of contamination there, but we 20 19:36 found no marker compounds.

21 So from these three studies, we 22 determined that really the foundry was not the source 23 of widespread contamination. It may have contributed 24 some, but we think we've addressed most of it through 25 19:36 our cleanup.942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 20 1 MR. ALVIN BYRD: When you say not the 2 source, but they contributed to some, from our 3 initial -- from your initial investigation, wasn't lead 4 one of the metals found at the foundry? 5 19:36 MR. RAFAEL CASANOVA: Yes.

6 MR. ALVIN BYRD: Okay. So through 7 emissions or through, I guess, with the drenching of 8 the floods and all of the different ways or travel 9 methods that these contaminants could have gotten into 10 19:37 residential, wouldn't you say that the foundry was a

11 major contributor to that lead being found in some of 12 our -- in some of the residential inspections you've 13 done? 14 MR. RAFAEL CASANOVA: And we think we've 15 19:37 addressed all those through our cleanup efforts.

16 MS. STACEY BENNETT: I think -- I think, 17 though, what we're trying to say is when you look under 18 a microscope and you look at what's on site, so if I 19 look under the microscope and I have lead, I'm looking 20 19:37 at how the particles are together; okay? And I'm

21 looking at those under a microscope. If that's not the 22 same blueprint that I see in the residential yards, 23 that tells me that it's not just the foundry. It has 24 to be something else there, and that's all we're 25 19:37 saying. We're not saying the foundry didn't cause some942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 21 1 of the contamination. We're just saying that as 2 widespread as what we saw, there's no way that the 3 foundry was the only source -- 4 MR. ALVIN BYRD: Right. Okay. 5 19:38 MS. STACEY BENNETT: -- for that lead

6 contamination, and that's all we're saying. We know 7 that there's a commingling of the waste between the 8 foundry and other sources, and that's why we have that 9 the other potential sources were -- you have lead-based 10 19:38 paint chips, okay? So you have chips coming off of

11 houses that are falling into the soil; okay? 12 That's one potential source. 13 Also, some of the homes were near the 14 freeway, and in the '70s, of course, you had leaded 15 19:38 fuel. Those could be a second source of contamination

16 of the yards during that time, but all we're saying is 17 that the foundry was not, because you still should see 18 some type of pattern when you look under a microscope 19 or when you're doing those other tests. It all -- it 20 19:38 should be that if I take one test and I take another

21 test, I should be able to put them over each other and 22 they should match, and what we're saying is they're not 23 matching, the DNA is not matching exactly. 24 MR. ALVIN BYRD: Would the percentage of 25 19:39 either one, would that matter?942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 22 1 MS. STACEY BENNETT: We didn't -- 2 MR. ALVIN BYRD: Which one contributed 3 the most? 4 MS. STACEY BENNETT: We don't know that. 5 19:39 We didn't go into that -- in that in-depth study of

6 that. We just didn't do that in-depth study. All we 7 can say is that the blueprints don't match exactly, so, 8 therefore, we know that there are other contributors. 9 MR. DONN WALTERS: This was Alvin Byrd. 10 19:39 MR. ALVIN BYRD: Oh, I'm sorry.

11 MR. DONN WALTERS: For the court 12 reporter. 13 MS. STACEY BENNETT: Okay. Thanks a 14 lot. 15 MS. DOROTHY WRIGHT: Let me ask you a 16 question. 17 MS. STACEY BENNETT: Could you come to 18 the mic so that the court reporter can hear you, just 19 state your name. 20 MS. DOROTHY WRIGHT: My name is Dorothy 21 Wright. I live right across the street from the lead 22 site. Okay. Why do they keep on -- 23 MS. STACEY BENNETT: You've got to 24 really speak into it. 25 19:40 MS. DOROTHY WRIGHT: Okay. My name is942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 23 1 Dorothy Wright. I live across the street from the lead 2 site. They still some old cans out on the other side 3 here. They're still dumping over there. 4 Now, on the day, down a little further, 5 19:40 towards the plant's right, water floods over there, I

6 suspect, over at Texas Electric. 7 MS. STACEY BENNETT: Okay. Now -- 8 MS. DOROTHY WRIGHT: It is really bad, 9 and our water is still yellow. 10 19:40 MS. STACEY BENNETT: Okay. That's

11 something we'll probably have to get with the City of 12 Houston. When we tested as part of the first study 13 that we did on site, we did test all of the water that 14 was backing up on the street, and we didn't find any 15 19:40 concentrations that would be harmful to people, and so

16 that's -- it's not a problem as far as a risk to your 17 health. However, it is a nuisance, and so that's 18 something that we'll have to address with the City of 19 Houston. 20 19:41 In answer to your second question about

21 the drums, we're aware that people keep putting drums 22 around -- right in front of the site, and we have been 23 working with the City of Houston to try to identify who 24 is putting those drums there. But I don't think those 25 19:41 drums are contributing to any contamination in your942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 24 1 yards. 2 MS. DOROTHY WRIGHT: You sure? 3 MS. STACEY BENNETT: I'm sure. 4 MS. DOROTHY WRIGHT: Okay. I'm going to 5 19:41 ask you one more question. Why -- how many feet y'all

6 go through the yard? Not too long ago, they all -- not 7 too long ago, they were working over there and quit. 8 MS. STACEY BENNETT: Are you talking 9 about the -- 10 19:41 MS. DOROTHY WRIGHT: On Nance Street,

11 across the street from my house. 12 MS. STACEY BENNETT: You talking about 13 the development? 14 MS. DOROTHY WRIGHT: Yes. 15 19:41 MS. STACEY BENNETT: Okay.

16 MS. DOROTHY WRIGHT: Why they quit 17 working on the property? 18 MS. STACEY BENNETT: I don't know. We 19 can -- we can assist you with trying to get ahold of 20 19:41 that developer and working with the City of Houston to

21 do that. I think most of that property wasn't in our 22 study area. It was right outside of that, so we didn't 23 do any type of investigation on that. 24 MS. DOROTHY WRIGHT: I have another 25 19:42 question. I live on Nance, I live right across the942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 25 1 street from the lead site, where that -- 2 MS. STACEY BENNETT: So she's talking 3 about on Nance Street. 4 MR. DONN WALTERS: Nance. 5 19:42 MS. DOROTHY WRIGHT: Uh-huh. I was

6 going to ask you -- I forgot now. Okay. Let me see. 7 What y'all going to put on the lead 8 site? 9 MS. STACEY BENNETT: Okay. This meeting 10 19:42 is just to deal with the residential properties.

11 MS. DOROTHY WRIGHT: Okay. 12 MS. STACEY BENNETT: Okay? But give us 13 a little chance, and when we finish with these slides, 14 we'll go to the Operable Unit 1, which is -- we're 15 19:42 going to have some upcoming meetings on that.

16 Right now, we just want to handle, if 17 you have any questions on the actual residential yards. 18 MS. DOROTHY WRIGHT: Okay. Thank you. 19 MS. STACEY BENNETT: Okay. Any more 20 19:43 questions up to this point about the contamination and

21 what EPA has done? Okay. 22 Okay. Now, remember at the very 23 beginning of the presentation, we had talked about some 24 of the people were concerned with crawl spaces up 25 19:43 underneath their houses? What EPA had done was we had942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 26 1 sampled approximately under 23 homes, and we chose 2 those homes based on previous removals that were 3 completed by the Texas Commission of Environmental 4 Quality, and that's because we hadn't sampled the rest 5 19:43 of the area yet, so we only wanted to deal with those

6 homes in which we knew a cleanup had already been 7 conducted. 8 And what we concluded from there is we 9 really don't have enough data to draw any conclusions. 10 19:43 So what we're going to do is we're going to do a third

11 study, and this will be our last study, and in this 12 study, we will address crawl spaces. 13 One of the things that we want to do is 14 look at the entire study area, which is really 399 15 19:44 homes, if you take out the 19 industrial properties of

16 the 418 that are within the study area, so we really 17 have 399. We really need to get a handle on how many 18 of those homes really have crawl spaces, whether a 19 child can get up underneath that crawl space and make a 20 19:44 determination before we do more investigation, but we

21 will be doing some more investigation, and that will be 22 handled in a separate investigation. 23 Also, under this separate investigation, 24 we're going to be addressing the 112 properties that we 25 19:44 did not sample -- that we did not sample. And those,942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 27 1 to give you a breakdown of those 112, 53, the owners 2 could not be located. What that means is that we were 3 looking at the Harris County Appraisal District 4 information, and there is no up-to-date information on 5 19:45 who the owner of those properties are. Okay? And that

6 also means that no taxes have been paid, usually, on 7 those properties, and that's the reason why they don't 8 have the up-to-date information. 9 Out of that 112, 43, the owners were 10 19:45 unresponsive, so we don't know if it's a person that's

11 deceased, we don't know if they've moved somewhere, but 12 we sent letters out and the letters came back 13 undeliverable to whoever that person was in the current 14 address. 15 19:45 And then we had 16 owners that outright

16 denied us access to sample their property, so we cannot 17 make a determination on whether or not they have the 18 issue in their yard or not. 19 What EPA is going to do is for the next 20 19:45 four months, we're going to be going back to the Harris

21 County Appraisal District, trying to get some 22 up-to-date information. Also, the TAG group has agreed 23 to help us with the properties to where the owners, 24 where no one knows who the owner is, there may be some, 25 19:46 I guess, oral history from people that we can get to942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 28 1 try to determine maybe who are the heirs of that 2 property or what have you, or who was the last owner, 3 since the appraisal district doesn't know. 4 Mr. Williams. 5 19:46 MR. EARNEST WILLIAMS: Yes, I was going

6 to ask you a question about, like the Harris County 7 Appraisal District, on them 53 homes have not been 8 sampled that y'all don't know -- don't have no data on 9 them. 10 19:46 MS. STACEY BENNETT: Right.

11 MR. EARNEST WILLIAMS: When could EPA 12 get the right to just go in there and check and do a 13 sample? 14 MS. STACEY BENNETT: We have to be given 15 19:46 authority to be able to do that. We cannot go into

16 anyone's yard or else it's considered a takings issue, 17 and we can be sued, so, therefore, we have to go 18 through proper procedures to get access, so that's why 19 we cannot go on there. Unless you have documentation 20 19:46 that shows that there is an imminent and substantial

21 endangerment, which means that we had data to say that, 22 yes, it's above a risk number, that would be probably 23 the only way that we could go on there, but, right now, 24 we're going to have to work through our attorneys and 25 19:47 work with the City of Houston to try to get access to942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 29 1 those properties. We can't just go on the properties. 2 MR. ALVIN BYRD: What is TAG? 3 MS. STACEY BENNETT: The Technical 4 Assistance Group. That's the Mothers for Clean Air. 5 19:47 For every Superfund site, groups can apply to EPA to

6 receive a grant, and the whole purpose of the grant is 7 so that when information about the site that EPA is 8 working on, a lot of the technical information, they 9 get those reports from us and they interpret that 10 19:47 information for the public.

11 Donn, you have anything to add on that? 12 MR. DONN WALTERS: Yeah, I'll just 13 add -- Donn Walters -- the TAG is an important part of 14 many of our NPL sites. We've had one for approximately 15 19:48 three or four -- three or four years. The TAG group is

16 represented here this evening by Richard Fuller, and, 17 also, to -- in preparation for this meeting this 18 evening, I'll mention that we did meet with TAG 19 representatives several weeks ago to provide 20 19:48 information to them, as well.

21 MR. ALVIN BYRD: And that information 22 through TAG is filtered down. How is it filtered down 23 to the community? 24 MR. DONN WALTERS: Well, the TAG group 25 19:48 for a site, this site, represents the community. Their942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 30 1 technical advisor and representatives of the TAG group 2 talk with us, meet with us, and then provide the 3 information further to the communities, and I believe 4 that has happened here. 5 19:48 MR. RICHARD FULLER: The group that got

6 the grant is Mothers for Clean Air. 7 MR. DONN WALTERS: That's right. 8 Mothers for Clean Air, which is based here in Houston. 9 MR. RICHARD FULLER: Richard Fuller. 10 19:49 MS. STACEY BENNETT: And Richard can

11 give you information on who are the contacts for 12 Mothers for Clean Air, so if anyone has a question 13 about what EPA's doing at any point, if you can't reach 14 us, you can definitely call Mothers for Clean Air and 15 19:49 the contacts for them and they should be able to tell

16 you where we are in the process and what's going on 17 with the site. That's the whole purpose of the TAG is 18 to basically be a conduit to be able to get the 19 information from EPA and be able to interpret that 20 19:49 information for the community.

21 Over the next, like I said, three to 22 four months, we're going to be working very hard to try 23 to get access to the remainder of the 112 properties, 24 and, also, to make some determination regarding the 25 19:50 crawl spaces.942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 31 1 And this is just a diagram that talks 2 about the Superfund process. Right now, we just 3 completed the remedial investigation feasibility study, 4 which is basically the sampling, the sampling and the 5 19:50 reports for Operable Unit 2. And right now, we're

6 right here, we're doing the Proposed Plan, which we 7 wrote, and that's what the purpose of this meeting is, 8 to tell you what's in the Proposed Plan, and then after 9 that, we write what we call a Record of Decision, which 10 19:50 is we come up with our final remedy for the site, based

11 on comments that we get from the public and based on 12 all the data and information that we have in our 13 record. 14 And The Record of Decision, we're trying 15 19:50 to get that completed by the end of September. The

16 public comment period for your comments to us on what 17 we've proposed tonight to you under Operable Unit 2, 18 which are the residential properties and high access 19 areas, that comment period will end on September the 20 19:51 8th, so if you have any comments, please either tonight

21 ask those questions or there are sheets of paper on the 22 table in which you can write your questions and you can 23 give it to us tonight, or the other option is to mail 24 it in to us. 25 19:51 Let's go on to the next slide. I know942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 32 1 we had one more question that I wanted to address. Is 2 there another slide? Yeah. Okay. 3 I think some of you have been asking 4 about the onsite property. Right now, EPA is in 5 19:51 negotiations with the developer. One of the things

6 that the bankruptcy trustee had done when the property 7 was auctioned off was in there was a requirement that 8 whoever was the winning bidder that they would have to 9 enter into an agreed order with EPA to either conduct 10 19:52 the cleanup themselves or to make arrangements for EPA

11 to do the cleanup and they would give us the funds for 12 that cleanup. 13 So right now, we're in negotiations with 14 the developer for this agreed order. 15 19:52 And we anticipate an upcoming

16 information meeting, and that will be in late 2005 or 17 either early 2006. That's our current projection. 18 Secondly, we want to talk about OU3. 19 Again, one of the things that we plan on doing is we're 20 19:52 going to issue notification letters to the city for the

21 properties in which we did not sample and see if we can 22 get some help from the City of Houston. We're also 23 going to send out letters again to the residents -- 24 okay -- that we have on file and for those who denied 25 19:53 us access. We're going to send them another letter942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 33 1 and, basically, give them some more information about 2 why it's important to allow us to sample the property. 3 It's no cost to the resident for us to sample and it 4 has been no cost for us to do the cleanup, and also 5 19:53 we're going to use Mothers for Clean Air to try to help

6 us to determine some of the ownerships of the 7 properties that are not in the Harris County Appraisal 8 District system through oral histories. 9 One of the things that it's kind of 10 19:53 important to understand is once we send out these

11 letters and once we start the second round of sampling 12 for those 112 properties, once we're finished, we're 13 finished, so if we don't get access, sometimes there's 14 nothing that we can do. We cannot force access on 15 19:53 people. That has been the Region 6 EPA policy.

16 But we're going to do everything we can 17 with working with our attorneys and working with the 18 city and working with our Department of Justice to see 19 what we can do to locate those owners and to get access 20 19:54 onto those properties.

21 Okay? 22 MR. DONN WALTERS: Stacey, did you 23 mention the schedule for the OU3 investigation? 24 MS. STACEY BENNETT: Yes. We're going 25 19:54 to start in January, so that gives us about four months942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 34 1 to try to locate all those 112 parties. And we're 2 hoping that once we start the sampling, that this time 3 next summer we'll have the results of those last 112 4 properties as well as the crawl spaces, and we'll come 5 19:54 back to you again and tell you what are our findings

6 from that. 7 MR. ALVIN BYRD: In regards to OU1, in 8 the context of the community establishing the CAG, the 9 Citizen Advisory Group, along with four proposed 10 19:54 recommendations for reuse of the property, does that

11 hold any merit anymore? 12 MS. STACEY BENNETT: EPA can't make any 13 land use decisions. We -- we're not granted that 14 authority. Who you would have to work with is the City 15 19:55 of Houston, because they're the ones that issue the

16 permits for buildings and structures to go up. 17 We anticipate that when we have the 18 upcoming information meeting, the developers will be 19 there, so you will have the opportunity to ask those 20 19:55 types of questions to them at that time.

21 MR. ALVIN BYRD: Thank you. 22 MR. DONN WALTERS: And that CAG, Alvin, 23 was formed by a grant -- EPA grant to the City of 24 Houston. That's what they used to help form that CAG 25 19:55 to get input on that unit at that time.942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 35 1 MS. STACEY BENNETT: Okay. Any more 2 questions on -- let's go back to Operable Unit 2, 3 because that's what we're here tonight to address, and 4 that's if you have any questions on what we did on the 5 19:55 residential properties. Any questions on that?

6 MR. ALVIN BYRD: No, you pretty much 7 covered it. I guess the primary concern would be about 8 the 112 that you haven't been able to do. 9 MS. STACEY BENNETT: Right. And that 10 19:56 was the whole purpose of us creating a separate -- a

11 separate investigation to deal with that, because what 12 we didn't want to do is hold up letters and a process 13 that had already been established for the people that 14 we had already addressed their property, so that's the 15 19:56 reason why we separated those out into a separate

16 investigation. 17 MR. ALVIN BYRD: And the 181 that you 18 did -- 19 MS. STACEY BENNETT: Right. 20 19:56 MR. ALVIN BYRD: -- everybody got a

21 clean bill of health. 22 MS. STACEY BENNETT: Everyone has been 23 cleaned up and -- 24 MR. ALVIN BYRD: They got comfort 25 19:56 letters and everything?942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 36 1 MS. STACEY BENNETT: Correct. Correct. 2 Yes, Miss Carrie. 3 4 MS. CARRIE NICHOLSON: Those ones that 5 19:56 you did not test, how close are they to the ones that

6 you did test and would it make a difference? Would you 7 think it would make a difference? 8 MS. STACEY BENNETT: Go back, Luis, to 9 that map. 10 19:57 Okay. This just gives you an idea of

11 the properties. Again, the ones in red are the ones 12 that we did not sample, and your question is, if 13 they're located next to one that has been cleaned or 14 that one that has been sampled and it was okay, will 15 19:57 they affect those properties?

16 Our experience has been with metals, 17 with lead, it does not -- it does not move, so it 18 should not be traveling across into another yard, even 19 through water. Metals stay fixed to the soil, so, 20 19:57 therefore, it should not be a problem. It won't be a

21 problem in your yard. 22 Now, if children are playing in other 23 yards that are not their own and that soil hasn't been 24 tested, I mean, there is always a potential. But, 25 19:58 again, they have to be exposed over a period of years942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 37 1 for it to really have an effect on them. 2 So it's not going to recontaminate your 3 yard, but we still need to find out what's the status 4 of those other properties. 5 19:58 Any other questions?

6 MS. NICOLE BATES: I have some questions 7 about OU1? Can you address that? 8 MS. STACEY BENNETT: Can you come to a 9 mic? 10 19:58 MS. NICOLE BATES: You can't hear me?

11 MS. STACEY BENNETT: No, we have our 12 court reporter and she has to be able to hear you to 13 document the question. And your name, please. 14 MS. NICOLE BATES: Nicole Bates, State 15 19:58 Representative Harold Dutton's office. Okay.

16 Back on OU1, who are the developers? 17 MS. STACEY BENNETT: It's the Fifth Ward 18 Investment Corporation. 19 MR. RAFAEL CASANOVA: I think that's 20 19:59 changed now. I can't remember the name. Do you

21 remember the name now? 22 MR. RANDY ASHBY: They haven't told us 23 the final name. 24 MR. RAFAEL CASANOVA: Okay. 25 19:59 MS. STACEY BENNETT: It was Fifth Ward942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 38 1 when -- when the auction was held the name of record 2 was the Fifth Ward Investment Corporation. 3 MS. NICOLE BATES: And you say the name 4 has since been changed? 5 19:59 MS. STACEY BENNETT: From what I

6 understand from the bankruptcy trustee that they're 7 going through a name change. 8 MS. NICOLE BATES: But that name change 9 hasn't been completed yet; correct? 10 19:59 MR. RANDY ASHBY: Correct.

11 MS. STACEY BENNETT: Not to our 12 knowledge, it hasn't been completed. 13 MS. NICOLE BATES: Okay. And do we know 14 how much of the site that they're planning on 15 19:59 remediating?

16 MS. STACEY BENNETT: No, that's the 17 whole purpose of the negotiations, because whatever 18 they don't clean up, EPA has to clean up, so 19 regardless, the site will be addressed and it has to be 20 19:59 addressed in accordance with the Record of Decision

21 that we came out with last year in July. 22 MS. NICOLE BATES: Okay. And do you 23 know when remediations are set to begin? 24 MS. STACEY BENNETT: No, because we have 25 20:00 not finished the negotiations. Until we determine942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 39 1 who's doing what on the property, we can't actually 2 start the cleanup. 3 MS. NICOLE BATES: Okay. Now, if the 4 developers choose to be the one who are going to 5 20:00 remediate the site, how will youall determine that they

6 did exactly what they were supposed to do? Do you go 7 back and check? 8 MS. STACEY BENNETT: Because we have 9 oversight authority. EPA will -- Rafael and myself and 10 20:00 other EPA staff will be out there. They have to submit

11 work plans. There's a whole process that they will 12 have to go through, and once an order is signed, we'll 13 be coming back to the community and we'll be giving the 14 community all that information, so it'll talk about 15 20:00 what work plans are due, what remedy that they're going

16 to be -- that's documented in the ROD, what they're 17 actually going to be doing. It'll have time frames and 18 schedules, and there are also penalties in the order -- 19 EPA always has penalties associated in their order when 20 20:01 someone does not abide by the schedule or by the

21 procedures that have been laid out and agreed to. 22 So there will be checks and balances to 23 make sure that the cleanup is done accordingly to what 24 the Record of Decision is. 25 20:01 MR. RICHARD FULLER: Let me ask one942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 40 1 question the lady asked. Richard Fuller. 2 Stacey, is it my understanding that this 3 is the first time EPA has ever allowed a Superfund site 4 to be sold and then cleaned up by a new owner? 5 20:01 MS. STACEY BENNETT: I believe -- I

6 believe that that's correct. 7 MR. DONN WALTERS: Yeah, it's the first. 8 MS. STACEY BENNETT: This is the first 9 time. I mean, we've had prospective purchaser 10 20:01 agreements with other Superfund sites, but not in which

11 they're cleaning up a Superfund -- an NPL-listed 12 Superfund site. 13 MS. NICOLE BATES: Okay. Last question. 14 Are the developers going to guarantee that no latent 15 20:02 effect will result from whatever site cleanup that they

16 choose to do or -- 17 MS. STACEY BENNETT: Well, it's still on 18 EPA's responsibility, because whatever they're doing, 19 it's done according to an order, so they're being -- 20 20:02 there's an order created which basically is -- it has

21 penalties associated, so, basically, EPA guarantees 22 that it will be done in accordance with the Record of 23 Decision. 24 MS. NICOLE BATES: Okay. Now, when was 25 20:02 the property sold?942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 41 1 MS. STACEY BENNETT: It has been 2 auctioned, but from what I understand is that they have 3 not actually taken possession of the property and they 4 cannot do that until they complete the order with the 5 20:02 EPA, which states exactly what they're going to do. So

6 they won the auction, but they have not actually taken 7 possession of the property. 8 MS. NICOLE BATES: Do you know about how 9 long that's going to be? 10 20:02 MS. STACEY BENNETT: We don't know.

11 MS. NICOLE BATES: No estimate? Within 12 the next couple of years, maybe? 13 MS. STACEY BENNETT: We're hoping by the 14 end of this year that we would have reached an 15 20:02 agreement on exactly what they're going to do.

16 That's our hope. 17 MS. NICOLE BATES: And what if y'all 18 don't reach an agreement? 19 MS. STACEY BENNETT: Then EPA has to 20 20:03 clean up the site and they have to give us the funds

21 for that. 22 MS. NICOLE BATES: Okay. Thanks. 23 24 MS. CARRIE NICHOLSON: With reference to 25 20:03 the name change, is it just the Fifth Ward Investment,942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 42 1 Inc. going to change its name or -- 2 MS. STACEY BENNETT: I have no idea. I 3 really don't have all that information. Our EPA 4 attorney would have that type of information, and what 5 20:03 we can do is give you her name and e-mail address and

6 you can submit an e-mail to her asking about that. 7 8 MS. CARRIE NICHOLSON: What's her name 9 again, please? 10 20:03 MS. STACEY BENNETT: Barbara Nann, B A R

11 B A R A. Last name, Nann, N A N N, and her e-mail 12 address is the same as ours. It's last name, dot, 13 first name at EPA.gov. So that would be 14 NANN.Barbara@EPA.gov. 15 20:04 Any questions on the residential

16 properties or OU2? 17 MR. DONN WALTERS: Or just general 18 comments you'd like to make. 19 MS. STACEY BENNETT: Come up to the mic, 20 20:04 if anyone has any general comments or anything.

21 MS. DOROTHY WRIGHT: Okay. When y'all 22 get ready to do the yards, how many feet y'all going 23 down? 24 MS. STACEY BENNETT: We went down to 18 25 20:04 inches, which is a foot and a half.942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 43 1 MS. DOROTHY WRIGHT: I think y'all need 2 to go down a little further. 3 MS. STACEY BENNETT: Well, see, what we 4 did is 18 inches was the deepest depth at which we 5 20:04 found contamination. Below 18 inches we didn't find

6 anything that was above the 500. 7 MS. DOROTHY WRIGHT: Okay. Can I ask 8 you another question? 9 They found one tank over there. There's 10 20:05 two more tanks y'all got to find.

11 MS. STACEY BENNETT: Tanks, you talking 12 about on the site itself? 13 MS. DOROTHY WRIGHT: People were working 14 on that. They were since 1996. 15 20:05 MS. STACEY BENNETT: Okay.

16 MS. DOROTHY WRIGHT: When the people 17 came out, inspected, doing all the tests, okay, they 18 say they found two more tanks. 19 MS. STACEY BENNETT: They found tanks, 20 20:05 but those tanks are not leaking out onto residential

21 properties. So everything is contained within the 22 fenced boundaries. So we're going to make sure that 23 when they do handle the onsite, which is within the 24 fenced areas, that that is not going off site, and 25 20:05 that's one of the things that they have to do is they942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 44 1 have to put procedures in place to make sure that when 2 they remove those tanks, that none of that material 3 goes off site. So there will be procedures in place to 4 make sure that the residential properties aren't 5 20:05 affected.

6 MS. DOROTHY WRIGHT: Okay. 7 MS. NICOLE BATES: I have some more 8 questions. Sorry. 9 MS. STACEY BENNETT: Okay. Go right 10 20:06 ahead.

11 MS. NICOLE BATES: Who all is a part of 12 the Fifth Ward Investment Corporation? 13 MS. STACEY BENNETT: I don't know. 14 MS. NICOLE BATES: Would the bankruptcy 15 20:06 judge know?

16 MS. STACEY BENNETT: Bankruptcy, do 17 y'all know who all is part of the Fifth Ward? 18 MR. RANDY ASHBY: I haven't seen the 19 organizational structure, so I don't know. 20 20:06 MS. NICOLE BATES: What's their address?

21 MR. RANDY ASHBY: I don't have it with 22 me. 23 MS. NICOLE BATES: Do you have any 24 information at all? 25 20:06 MR. RANDY ASHBY: Well, I mean, I do942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 45 1 not -- recall offhand what their address is. They 2 would be with the Secretary of State, I would think. 3 It's Fifth Ward Development, LTD., I think. Limited is 4 L T D, period. 5 20:06 I'm sorry. It's Fifth Ward -- Fifth is

6 F I F T H, Ward Development, comma, L T D, period. Oh, 7 my name is Randy Ashby, A S H B Y. 8 MR. RICHARD FULLER: This is Richard 9 Fuller again. On that, weren't we told at our last 10 20:07 meeting, you and I, that the name Frank Lu was

11 associated with this -- the group that had just bought 12 that property? 13 MS. STACEY BENNETT: That was in the 14 newspapers. We have not -- we've never had a meeting 15 20:07 with Frank Lu.

16 MR. RICHARD FULLER: So we don't know 17 whether Frank Lu really is the main prime mover of this 18 group? 19 MS. STACEY BENNETT: We don't have -- I 20 20:07 don't have that information. And I'm not trying to get

21 off of OU1, but just realize this meeting is on OU2 and 22 that what we're trying to do is get your comments on 23 this and that with the upcoming meeting, after we 24 reach -- you know, when we have negotiations with 25 20:07 someone that's a potential buyer, we don't ever deal942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 46 1 with the person that's actually the buyer. You always 2 deal with a law firm. So our attorneys, they meet with 3 the attorneys of the person that they're representing, 4 so a lot of times we don't even know the identity of 5 20:08 that person until at the end in which the paperwork is

6 signed. 7 But you will have an opportunity to 8 comment, because once they sign an agreed order with 9 us, it'll have to go to the Federal Register, it'll be 10 20:08 published in the Federal Register, and there's a public

11 comment period on that, and so you will have an 12 opportunity to comment. So just be patient with us, 13 and hopefully at the end of this year, we'll be able to 14 have some type of information meeting, and we will try 15 20:08 to get the developer at that meeting so that you'll

16 have the opportunity to ask those questions. 17 But the main thing we just want to do is 18 get your comments on what we've done so far on the 19 residential areas. 20 20:09 MR. EARNEST WILLIAMS: About the cleanup

21 and everything, with the EPA; right? 22 MS. STACEY BENNETT: Right. EPA or the 23 Texas Commission on Environmental Quality, all the 24 properties that were above 500 parts per million lead 25 20:09 have been cleaned up.942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 47 1 MR. ALVIN BYRD: Well, you know, you've 2 done such a good job, Stacey, that the only remaining 3 questions is: Who are these developers? 4 MR. EARNEST WILLIAMS: Yeah, that's -- 5 20:09 MR. ALVIN BYRD: That's the primary

6 concern, and then I guess this lends toward an 7 opportunity every time we have a meeting, you know 8 we're going to ask you about it. 9 MS. STACEY BENNETT: That's true. 10 20:09 MR. ALVIN BYRD: So we can really clear

11 the air and just say who it is. 12 MS. STACEY BENNETT: Right. And we're 13 hoping at the end of this year, we'll be able to, once 14 we've reached an agreement -- the attorneys have 15 20:09 reached an agreement on that agreed order, that all of

16 those individuals will be present for a meeting and 17 you'll get an opportunity to ask those questions. 18 MR. ALVIN BYRD: Okay. 19 MS. STACEY BENNETT: Any other 20 20:09 questions?

21 MR. EARNEST WILLIAMS: That's about it 22 that I need. 23 MS. STACEY BENNETT: If not, you can 24 always give us a call on the fact sheet. You have 25 20:10 Rafael, myself, Donn Walters, all of our names, phone942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 48 1 numbers, and address, e-mail addresses. You can always 2 e-mail us a question. 3 But we want to thank you for taking time 4 out of your busy schedule tonight and for coming out to 5 20:10 the Proposed Plan meeting for the residential areas.

6 Thank you. 7 (Meeting adjourned at 8:10 p.m.) 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25942343ab-6c0e-4f35-ba6d-d84cc5cd7444 

## EPA Public Meeting 8/16/2005 Page 49 1 THE STATE OF TEXAS: 2 COUNTY OF HARRIS: 3 4 I, Peggy Ann Antone, Certified Shorthand 5 Reporter in and for the State of Texas, do hereby 6 certify that the foregoing proceedings were taken by me 7 in machine shorthand and later transcribed from machine 8 shorthand to typewritten form by me. 9 I further certify that the above and 10 foregoing proceedings, as set forth in typewriting, is 11 a full, true and correct transcript of the proceedings 12 had at the time of taking said proceedings. 13 GIVEN under my hand and seal of office 14 on this, the 28th day of August, 2005. 15 16 17 ----------------------------------- 18 Peggy Ann Antone, RMR, CRR

C.S.R. No. 755 Expires 12/31/06 19 Notary Public, State of Texas

Commission expires 8/20/08 20 Allied Advanced Reporting, Inc. 21 1647 Colquitt

Houston, Texas 77006 22 713.524.6777

aari@alliedadvancedreporting.com 23 24 25

# APPENDIX D

# Soun dEnvironmenta l Solutions , Inc .

Septembe r 6 , 200 5 Mr . Rafae l Casanov a Remedia l Projec t

Manage r Superfun dDivisio n (6SF-AP ) U . S . Environmenta l Protectio n Agenc y 144 5 Ros s Avenu e Suite 1200 Dallas , Texa s 75202-273 3 Subject : Comment s O n Th e Man y Diversifie dInterests , Inc . Superfun dSite , Remedia l Investigatio n An dFeasibilit y Stud y Report s Fo r Operabl e Uni t

2 . Dear Mr. Casanova : Th e Housto n Chapte r

o f Mother s fo r

Clea n Ai r ha s requeste dtha t

I submi t t o yo u th e attache d"Comment s O n Th e Man y Diversifie dInterests , Inc . Superfun dSite , Remedia l Investigatio n An dFeasibilit y Stud y Report s Fo r Operabl e Uni t

2" . W e trus t

tha t EP A wil l understan dou r

concern s abou t

th e nee dt o acces s al l propertie s i n th e stud y are as o tha t all contaminate dpropertie s can be remediated . Shoul dyo u hav e an y question s regardin g thes e comment s o r wis ht o discus s them , please dcontac t

me . Sincerely ,
Richar dH . Fuller , P.O. , C.P.G. , P.H.G . TA GTechnical Adviso r

t o Mother s fo r

Clean Ai r cc : Dr . Priscill aWeeks , Mother s fo r Clean Ai r Ms . Jan e Laping , Mother s fo r Clea n Ai r

Soun dEnvironmenta l Solutions , Inc . •1111 1 Kat y Freeway , Suit e 1004 , Houston , Texa s 7707 9

713/973-608 5 • Fax : 713/973-608 7 • E-mail : sesinc@ses-inc.ne tCOMMENT S O N TH E MAN Y DIVERSIFIE D INTERESTS , INC . SUPERFUN D SITE , REMEDIA L INVESTIGATIO N AN D FEASIBILIT Y STUD Y REPORT S FO R

OPERABL E UNI T 2 , DATE D JUL Y 29 , 200 5

Prepare dFo r U . S . Environmenta l Protectio n Agenc y

Regio n 6 Superfun dDivisio n

Prepare dB y Th e Fift hWar dChapte r

o f Mother s fo r

Clea n Ai r unde r A n EP A Technica l Assistanc e Gran t TA GTechnica l Adviso r Richar dH . Fuller , P.O. , C.P.G. , P.H.G . Soun dEnvironmenta l Solutions , Inc . 1111 1 Kat y Freeway , Suit e 100 4 Houston , Texa s 7707 9 Septembe r 1,200 5COMMENT S O N TH EMAN Y DIVERSIFIE D INTERESTS , INC . SUPERFUN D SITE ,

REMEDIA LINVESTIGATIO N AN D FEASIBILIT Y STUD Y REPORT S FO ROPERABL E UNI T 2 , DATE D JUL Y 29 , 200 5 Introductio n Th e Fift hWar dChapte r

o f Mother s fo r

Clea n Ai r i s anon-governmenta l organizatio n mad e u p o f citizen s wh o liv e predominantl y i n th e Fift hWar dare ao f Houston , Texas , th e are ai n whic h th e Man y Diversifie dInterests , Inc . (MDI ) Superfun dSit e i s located . I n Septembe r 2001 , Mother s fo r

Clea n Ai r receive da s Technica l Assistanc e Gran t fro mEP A Regio n 6 . Thi s gran t ha s allowe dthe mt o hir e aTechnica l Advisor , Soun dEnvironmenta l Solutions , Inc. , t o advis e th e grou p o n EP A activitie s at th e MD I site , revie w EP A document s o n th e MD I site , an dac t a s spokesperso n fo r

Mother s fo r

Clea n Ai r t o EP A Regio n 6 . Th e followin g comment s hav e bee n prepare db y Richar dH . Fuller , o f Soun dEnvironmenta l Solutions , Inc. , o n behal f

o f th e Fift hWar dChapte r

o f Mother s fo r

Clea n Air . Th e comment s ar e base do n arevie w o f

th e Jul y 29 , 200 5 Remedia l Investigatio n an dFeasibilit y Stud y Report s fo r Operabl e Uni t

2 . Remedia l Investigatio n Th e Remedia l Investigatio n fo r th e MD I Operabl e Uni t

2 (O U 2 ) covere dinvestigation s o f off

sit e occurrence s o f

metal s though t

t o hav e originate dfro mth e smelte r operation s a t

th e MD I site . 41 8 propertie s wer e identifie di n th e O U 2 stud y area . O f thes e properties , 10 6 propertie s ha d alread y bee n sample ddurin g th e 199 6 throug h199 9 stud y an dremediatio n that ha dbee n carrie d ou t b y EP A an dth e Texa s Natura l Resource s Conservatio n Commission , no w th e Texa s Commissio n o n Environmenta l Qualit y (TCEQ) . 18 1 propertie s wer e sample dan devaluate d durin g thi s Operabl e Uni t

2 investigation . 11 2 propertie s wer e no t evaluate dbecaus e asses s wa s denie d(1 6 properties) , th e owner s o f th e propert y coul dno t

b e determine d(5 3 properties ) o r th e owner s faile dt o respon dt o EP A letter s requestin g sit e asses s (4 3 properties) . A n additiona l 1 9 propertie s wer e no t

evaluate dbecaus e the y wer e classifie da s commercial/industrial . A cleanu p leve l o f

50 0 mg/k g fo r

lea dwa s established . Durin g th e previou s 199 6 throug h199 9 stud y ther e wer e 10 6 propertie s sample dan d8 9 propertie s wer e remediated . Durin g EPA' s Operabl e Uni t

2 investigatio n 5 9 o f

th e 18 1 propertie s sample dwer e foun dt o contai n lea d concentration s abov e th e 500-mg/k g cleanu p criteria . Thes e 5 9 site s wer e remediate db y th e remova l o f lea daffecte dsoils . A t 2 3 location s soi l sample s wer e collecte dfro mcrawlspace s unde r home s i n a n attemp t

t o determin e i f

th e lea dconcentratio n i n soil s beneat hcrawlspace s pose dahealt hrisk . I t wa s determine dtha t

additiona l samplin g o f

crawlspace s wa s necessary t o ascertai n i f concentration s o f lea dar e statisticall y significan t i n determinin g i f

ahealt hris k

exists . Thi s work

wil l b e carrie d a s par t o f th e Operabl e Uni t

3 activities . Operabl e uni t

3 activitie s wil l als o includ e effort s t o gai n acces s t o th e 11 2 propertie s that wer e no t previousl y investigate ddu e t o lac k o f sit e access .Feasibilit y Stud y

Al l propertie s tha t

wer e studie dan dfoun dt o contai n lea dconcentration s abov e cleanu p level s wer e remediate db y th e remova l o f lea daffecte dsoils . Th e feasibilit y stud y therefor e chos e th e n o actio n alternativ e fo r

furthe r remediatio n sinc e ther e wer e n o know n site s wher e soil s exceede dth e cleanu p levels . Comment s o n th e Finding s o f t he Remedia l Investigatio n an dFeasibilit y Stud y 1 . W e concu r

wit hth e finding s o f

th e R I an dF S report s i n tha t al l site s containin g lea d concentration s whic hexceede d50 0 mg/k g wer e remediate db y soi l remova l or , i n th e cas e o f th e Kell y Villag e area , remediatio n wil l soon b e completed . 2 . W e als o concu r

tha t sinc e al l know n area s o f

soil s containin g greate r

tha n 50 0 mg/k g lea d concentration s hav e bee n remediated , tha t th e n o actio n alternativ e fo r th e Feasibilit y Stud y i s th e appropriat e conclusion . 3 . W e agre e wit hth e decisio n t o carry ou t an Operabl e Uni t

3 R I an dF S t o cove r

th e 11 2 propertie s no t

sample dan dt o evaluat e additiona l sample s fro mcrawlspaces . 4 . W e are , however , ver y concerne dabou t th e leve l o f

effor t tha t EP A ha s expended, t o date , i n tryin g t o obtai n acces s t o th e 11 2 propertie s no t sampled . Thes e 11 2 propertie s represen t 27 % o f th e potentiall y affecte dproperties . W e believ e tha t EP A need s t o mak e gainin g acces s t o thes e propertie s area l priority . T o allo w 27 % o f th e potentiall y contaminate dsite s i n th e 5 th Ward , ahistori c minorit y area , t o g o unsampled , raise s rea l question s abou t Environmenta l Justice . W e ar e especiall y concerne dwhe n w e ar e tol dtha t on e reaso n tha t

EP A coul dno t us e th e court

syste mt o gai n acces s t o th e propertie s wa s becaus e EP A work s throug hth e Departmen t

o f Justic e an dth e Departmen t

o f Justic e doe s no t

se e thi s projec t

a s ahig h enoug hpriorit y t o support

EPA . I f thi s i s th e case , the n EP A shoul das k th e local citizen s fo r assistanc e s o tha t

w e ca n mobiliz e ou r

local an dnationa l politica l representative s t o pu t pressur e o n th e Departmen t

o f Justice . I amsure ou r

stat e representative s a s wel l a s ou r U . S . Senator s an dmember s o f

th e U.S . Hous e o f

Representative s woul dprovid e support an dpu t pressur e o n th e Departmen t

o f Justic e i f the y ar e no t

supportin g EP A i n thi s matter . W e sugges t

tha t th e followin g action s b e taken t o obtai n acces s t o th e unsample dsites :

• Fo r th e 1 6 site s wher e acces s wa s denied , w e believ e tha t EP A representatives , perhap s accompanie db y som e loca l concerne dcitizens , shoul dmee t wit hth e sit e owne r

t o explai n exactl y wha t

EP A i s proposin g t o d o an dt o explai n tha t al l work wil l b e don e a t n o cos t t o th e sit e owner .

• Extr aeffort s shoul db e expende dt o contac t th e owner s o f

th e 4 3 site s wher e n o respons e wa s obtaine dafte r

sendin g letter s notifyin g th e sit e owner s o f EP A reques t

t o sampl e th e sites. Additiona l letter s o f

reques t shoul db e sen t

out . Th e owner s shoul db e contacte d b y phon e i f

aphon e numbe r

ca n b e obtained . I f

thes e effort s fai l t o elici t

aresponse , the n the y shoul db e visite db y EP A representatives , perhap s accompanie db y som e loca lconcerne dcitizens , t o explai n exactl y wha t EP A i s proposin g t o d o an dt o explai n tha t al l wor k wil l b e don e a t

n o cos t t o th e sit e owner .

• Fo r th e 5 3 site s wher e n o owne r

ca n b e identifie dvi ath e ta x rolls , an dfo r an y o f th e 4 3 site s wher e tha t

owne r faile dt o respon dan dfurthe r effor t hav e resulte di n n o response , w e sugges t tha t EP A us e th e court

syste mt o gai n acces s an dsampl e th e propertie s base d o n th e premis e tha t

th e site s ma y constitut e adange r t o publi c healt han dth e environment . W e believ e tha t

EP A ha s no t

utilize dloca l citizen s group s enoug hi n attemptin g t o gai n sit e access . Local citizen s group s coul db e helpfu l i n determinin g sit e ownershi p an di n workin g wit h site owner s to gai n EPA acces s fo r samplin g an dsite cleanup .