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^ ^ ^ % UNITE D STATE S ENVIRONMENTA LPROTECTIO N AGENC Y 

## I ^ 5 i REGIO N 1

° X\R Z ^

" I CONGRESS STREET , SUIT E 110 0 \^^l^,o » BOSTON , MASSACHUSETT S 02114-202 3



## September

22 , 200 8 Scot t Acone , P.E. , PM P U S ArmyCorp s o f

Engineers , Ne w Englan d 69 6 Virgini aRoad Concord , Massachusett s 0174 2 Re : Interi mRemedialActio nReport fo r th eEastlan dWoolenMillSuperfundSite , Corinna , Main e Dea r Mr

. Acone : Thi s letter

document s EPA' s approvalo f th eSeptember

200 8 Interi mRemedialActio nReport prepare dbyth eUSACE' s contracto r Nobi s Engineering , Inc

. fo r EPApursuant

to IAG #DW96

- 940205-01

. Thi s document was als o reviewe dbyth eMain eDepartment o f Environmental Protection

. EPAreceive daletter fromth eMaineDepartment o f EnvironmentalProtecfio non September

10 , 200 8 approvin g th eInteri mRemedialActio nReport andconcurrin g that

th e RemedialActio ni s OperationalandFuncfional

. Upo nsignatureo f thi s letter , EPAwill transitio nth eEastlan dWoolenMil linto th eLong-Ter mRespons eActio nphase

. Pleas econtac t

EdwardHathawayo f

m ystaf f a t (617 ) 918-137 2i f

youhav ean

yquesfions

. Sincerely , Larr yBrill , Chie f Offic eo f SiteRemediatio nandRestoratio n Remediatio n& Restoratio nIBranc h

cc : Mar

yJan eO'Donnell , Sectio nChie f EdwardHathaway , RPM Rebecc aHewett , M EDE P

Tol l Fre e •1-888-372-734 1 Interne tAddres s (URL ) •http://www.epa.gov/region 1 RecyclecVRacyclabl e •Printe d wit h Vegetabl e Oi l Base d Ink s o n Recycle d Pape r(Minimu m 30% Postconsumer)•• • STAT EO FMAIN E DEPARTMEN TO FENVIRONMENTA LPRC~)TECTIO N

JOH N f^LIA S BALDACC I DAVI D P LITTEL L

r.,'"'\/rnri{". H COMMIfiSIOrjE R Septembe r 10 , 2 00 8

Mr . Edwar d Hathawa y U.S . EPA , Regio n 1 1 Congres s Stree t Suit e 1100 , (HBT ) Boston , MA02114-202 3 Subject : Interi mRemedia l Actio n Report , Eastlan d Woole n Mil l Superfun d Site ,

Corinna , Maine , receive d Augus t 18 , 200 8 an d Operationa l & Functiona l statu s concurrenc e

Dea r M r .^^.iWEnaway : Th e Main e Departmen t o f Environmenta l Protectio n (MEDEP ) ha s reviewe d th e Interi m Remedia l Actio n Report , Eastlan d Woole n Mil l Superfun d Site , Corinna , Maine . Nobi s Engineering , Inc . (Nobis ) submitte d th e repor t t o th e MEDE P o n Augus t 18 , 2008 . MEDEP' s revie wcomment s ar e liste d i n Attachmen t At o thi s letter . Additionally , a s yo u know , o n Augus t 4 , 2008 , we , alon g wit ha representativ e fro m Nobis , conducte d a remedia l actio n pre-fina l inspection . Th e MEDE P concur s tha t n o constructio n punch-lis t item s wer e identifie d durin g th e inspectio n and , therefore , th e inspectio n i s als o considere d th e fina l inspection . Further , base d o n MEDEP' s Interi mRemedia l Actio n Repor t revie wan d ou r August ; 4 , 2008 , inspection , MEDE P understand s tha t th e 200 6 Amende d RO D selecte d remedia l actio n fo r th e sit e ha s bee n implemente d and ha s attaine d "operationa l an d functional " statu s a s define d byth e NCP . Therefore , MEDE P concur s tha t th e remedyi s Operationa l an d Functiona l an d tha t th e 1 0 yea r perio d fo r th e Long-Ter mRespons e Actio n ha s begun . I loo k forwar d t o workin g wit hyo u a s th e remedia l cleanu p continue s a t thi s site . I f yo u hav e anyquestion s i n regard s t o thi s letter , pleas e cal l m e directl ya t (207 ) 287-855 4 an d a t (207 ) 287-2651 . Sincerely ,

Rebecc a L . Hewett , Projec t Coordinato r Divisio n o f Remediatio n Burea u o f Remediatio n & Wast e Managemen t pc : Mar yJan e O'Donnell , EP A

Davi d Wright , MEDE P Te d Wolfe , MEDE P Han k Andolsek , MEDE P Fre d Lavallee , MEDE P InterimRemedialActionRepor t 8-2008.do c

AUGUST A 17 STAT EHOUS ESTATIO NBANGO RPORTLAN D PRESQU EISL E AUGUSTA , MAIN E04r>3-OOI 7 10 6 HOGA NROA D 31 2CANC O ROA D 123 5 CENTRA LDRIVE , SKYWA YPAR K (207 ) 2H7.76S K

FAX : (207 ) 2S7.7N2rt BANCiOR , MAIN E0440 1 PORTLAND , MAIN E0410 3 PRESQU EISLE , MAIN E04769-209 4 RA YBLDC;. , HOSPITA LST

. (207)941-457 0EAX : (207 ) 941-45,S 4 (207)822-630 0EAX : (207 ) 822-63 03 (207 ) 764-047 7 EAX : (207 ) 760-314 3 wi h Mli : ww«.m..ini|.,. vJi[ > prinlf d n n recycle d pape rInteri m Remedia l Actio n Report

09/10/0 8 

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Attachmen t A Genera lComment : Th e repor t summarize s activities/action s conducte d a t th e sit e fro mdiscovery , removals , NP L listing , RI/F S t o implementatio no f th e remedia l action . Numerou s well s (drinkin g water , monitoring , injection , etc. ) existe d o r wer e installe d an d utilize d throughou t th e investigatio nan d cleanu p activities . Atabl e containin g a maste r listing/inventor yo f al l th e well s installe d an d utilize d ove r tim e a t th e sit e tha t als o present s th e typ e (monitoring , injection , drinkin g water , etc. ) an d th e statu s (decommissioned , active, inactive , etc. ) o f eac hliste d wel l need s t o b e develope d an d include d i nthi s document . 1 . Pag e 6 , Sectio n2.1.4 , Non-Tim e Critica l Remova l Actio n(Soi l Excavatio nan d Treatment) , 2"' ' paragraph , 7" ^ sentence : Amen d th e tex t t o read , "Th e NTCRAsoi l cleanup standard s ar e include d i nTabl e 2. " Th e groundwate r cleanu p level s presente d i n Tabl e 2 wer e use d fo r th e in-sit u chemica l oxidatio nactivitie s (ISCO) . [Pleas e not e tha t durin g th e NTCR Ath e soi l cleanu p level s presente d i n Tabl e 2 wer e use d fo r th e soi l an d extracte d groundwate r wa s treate d t o mee t level s fo r surfac e wate r discharg e tha t hav e bee npresente d i npas t NTCFI A document s i na tabl e title d "Treate d Effluen t Surfac e Wate r Qualit yDischarg e Criteria" . Th e "Groundwate r Cleanu p Level " level s presente d i nTabl e 2 o f thi s documen t wer e establishe d fo r th e remedia l actio nan d originat e fro m"Tabl e 2 2 - Interi mGroundwate r Cleanu p Levels " o f th e Septembe r 200 2 Recor d o f Decisio n (200 2 ROD ) document . Th e 200 2 RO D Interi mGroundwate r Cleanu p Level s wer e use d fo r th e ISC O activitie s conducte d a s par t o f th e NTCRA. ] 2 . Pag e 8 , Sectio n2.1.4 , Phas e I Activities , to p lin e o npage : Amen d th e tex t t o read , '...soil sample s collecte d fro m th e bas e of... " 3 . Pag e 10 , Sectio n3.0 , 1^ " bulle t i n2"" ^ se t o f bullets : Ad d a perio d (. ) t o th e en d o f th e bulle t text . 4 . Pag e 11 , Sectio n 3.1 , 2"' ^ paragraph , 1^ ' sentence : Amen d th e tex t t o read , "...th e implementatio no f institutiona l controls , wil l greatl yreduce... " 5 . Pag e 11 , Sectio n 3.2 , 1^ ' paragraph , 2"' ^ sentence : Ad d a colo n(: ) afte r th e wor d 'are ' befor e th e firs t bullet . 6 . Pag e 14 , Sectio n4.2 , 1^ ' paragraph , 1^* ^ sentenc e an d Tabl e 3 : Th e numbe r o f P2-04

- serie s an d IM-04-serie s well s (2 4 an d 12 , respectively ) state d i nth e tex t d o no t agre e wit hth e numbe r o f well s liste d i nTabl e 3 (2 2 P2-04-serie s an d 9 IM-04

- serie s well s ar e liste d i n Tabl e 3) . Pleas e reconcil e th e numbers . 7 . Pag e 14 , Sectio n 4.2 , 2" ^paragraph , las t sentence : Amen d th e tex t t o read , "...additiona l rise r t o connec t injectio nequipment. " 8 . Pag e 17 , Sectio n4.8.2 , 2"" ^ paragraph , 3'^' ' sentence : Amen d th e tex t t o read , "...additiona l rise r t o connec t injectio nequipment. " 9 . Page s 1 9 t o 21 , Sectio n4.1 1 an d Tabl e 7 : Th e approximat e "gallon s o f activate d sodiumpersulfat e solutio ninjected " presente d i nth e tex t doe s no t agre e wit h volume s presente d i n th e correspondin g tables . Why ? Pleas e explai nho wth e volume s i n th e tex t relat e t o th e volume s presente d i nth e table . 10 . Pag e 21 , Sectio n 4.12 , 1^"^ paragraph , 1^" ^ sentenc e an d Figur e 8 : Th e tex t refer s t o wel l RB-04-0 5 an d the nreference s Figur e 8 . However , wel l RB-04-0 5 i s no t include d o n Figur e 8 . I s Figur e 8 th e correc t figure ? I f Figur e 8 i s th e correc t figure , pleas e amen d th e figur e t o sho wth e RB-04-0 5 location .Interi m Remedia l Actio n Report

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11 . Page s 2 2 t o 23 , Sectio n 4.1 3 an d Tabl e 8 : Th e approximat e "gallon s o f activate d sodiumpersulfat e solutio ninjected " presente d i nth e tex t doe s no t agre e wit h volume s presente d i nth e correspondin g tables . Why ? Please>explai nho wth e volume s i n th e tex t relat e t o th e volume s presente d i nth e table . 12 . Pag e 23 , Sectio n4.13 , 2"^ * bullet : Pleas e correc t th e numbe r presente d i nth e tex t a s "14,6500" . 1 3 . Pag e 24 , Sectio n4.16 , 2"" ^ paragraph , 1^ " bullet : Amen d th e BM-04-5 1 wel l referenc e t o rea d BM-04-37 . Also , base d o nTabl e 8 volumes , shouldn' t th e tex t gallon s rea d 45 , 10 0 an d 100 , respectively ? 14 . Pag e 28 , Sectio n 6.0 , 2"' ' paragraph , las t sentence : Amen d th e tex t t o read , "th e Main e Ambien t Ai r Guideline s an d EP Arisk... " 15 . Pag e 30 , Sectio n6.1 , paragrap hfollowin g bullets , las t sentence : Amen d th e tex t t o read , "...inspections an d reviewe d th e progress... " 16 . Pag e 31 , Sectio n7.1 , botto m paragraph : Amen d th e tex t t o read , " ...28 , 200 6 a s documente d in_. " 17 . Pag e 32 , Sectio n7.4 , 2" ^bullet , las t sentence : Amen d th e tex t t o read , "...n o ICZ

B propertie s sinc e al l o f th e forme r ICZ- B propertie s hav e bee nconnecte d t o th e waterline , movin g the mt o th e ICZ- Acategory . 18 . Tabl e 3 an d Tabl e 6 : Well s OM-05-6 3 an d OM-05-6 4 ar e liste d o nTabl e 6 a s abandone d wells . Wh yaren' t th e shade d o nTabl e 3 t o designate d the yhav e bee n abandoned ?