### Supcriun dRecord s Cente r SITE : ^ BREAK : OTHER :

SDM S DocI D 25930 2



### SUPERFUN D SITE PRELIMINAR Y CLOS E OU T REPOR T (Non-Tim e Critica l Remova l Actio n an dFina l Sit e Actio n - O U I )

Eastlan dWoole n Mil l Superfun dSit e

Corinna , Main e Septembe r

200 6EASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOUT REPOR T I . INTRODUCTIO N Thi s Preliminar y Close-Ou t Repor t document s tha t

EP A ha s complete dconstructio n activitie s fo r bot h th e non-tim e critica l remova l actio n (NTCRA ) an dth e fina l Sit e action , referre dt o a s Operabl e Uni t

I (O U I ) a t

th e Eastlan dWoole n Mil l Superfun dSit e i n accordanc e wit h th e EP A guidanc e "Clos e Ou t

Procedure s fo r

Nationa l Prioritie s Lis t

Sites" , OSWE RDirectiv e 9320.2

- 09A-P , January 2000 . EP A an dth e Stat e o f Main e conducte dapre-fina l inspectio n o f th e Site o n Septembe r

19 , 200 6 an ddetermine dtha t n o furthe r

respons e i s anticipate dan dtha t EPA' s contractor s hav e constructe dth e respons e action s i n accordanc e wit h th e desig n plan s an d specification s whic h wer e approve db y EPA . N o additiona l constructio n activitie s ar e anticipate dat

th e Site . II . SUMMAR Y O FSITE CONDITION S a. . Sit e Description : Th e Eastlan dWoole n Mil l Superfun dSit e i s locate di n th e Tow n o f Corinna , Penobsco t

County , Maine , approximatel y 6 mile s nort h o f Newport an d2 5 mile s northwes t

o f Bangor , Maine . Approximatel y 80 0 peopl e liv e withi n on e mil e o f th e Sit e an d2,50 0 liv e withi n fou r miles . Th e Tow n o f Corinn ai s locate dwithi n th e Eas t Branc h o f

th e Sebasticoo k

Rive r (EBSR ) watershed , whic h drain s t o Sebasticoo k Lak e approximatel y thre e mile s south o f th e Town . Topograph y withi n th e watershe di s typifie db y gentl y rollin g hill s t o steepl y slopin g ridges, varyin g fro m narro w valley s t o fairl y expansiv e low-lyin g floodplains . Elevation s withi n th e immediat e vicinit y o f

Corinn arang e fro m20 0 t o 32 0 fee t abov e mea n se aleve l (msl) . Th e forme r Eastlan d Woole n Mil l straddle dth e EBS Ran dth e southern portio n o f th e forme r

Mil l Pond . Th e futur e lan dus e assumption s fo r th e 2 5 acre Site an dsurroundin g area s ar e base do n th e Reus e Pla n tha t

wa s develope db y th e Tow n o f Corinna . Th e larg e lan dare ai n th e cente r o f town , currentl y occupie db y th e Site , ha s bee n targete dfo r ami x o f commercial , residentia l an d mixed-us e development . An expansio n of the wate r suppl y has bee n implemente dby the local wate r distric t t o support

futur e growth . Th e majorit y o f th e Sit e i s availabl e fo r

re-us e sinc e th e curren t cleanu p progra monl y occupie s abou t thre e o f th e 2 5 acre s covere db y th e Site . Th e availabl e 2 2 acre s ar e currentl y bein g markete db y th e Tow n o f Corinna . Th e bac k

portio n o f

th e Site ha s alread y bee n brough t int o productiv e re-use . A 2 0 uni t senio r housin g facility , Corunde l Commons , opene do n thi s portio n o f th e Site i n February 2006 . b . Sit e History : Th e Site wa s propose dfo r inclusio n o n th e NP L o n Apri l 23,199 9 (6 4 Fed . Reg . 19968) . I t wa s liste dfo r fina l inclusio n o n th e NP L o n Jul y 22,199 9 (6 4 Fed . Reg . 39878-39885) . Th e Eastlan d Woole n Mil l operate datextil e mil l i n Corinna , Main e fro mabou t 190 9 t o 1996 . Liqui dwaste sEASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOUT REPOR T wer e discharge ddirectl y int o th e EBS Runti l 1972 , whe n th e liqui dwaste s wer e sen t t o th e loca l sewag e treatmen t

plant . I n 1983 , loca l wate r supplie s wer e foun dt o b e contaminate dwit h chlorinate dbenzen e compound s release db y th e Eastlan dWoole n Mill . A s aresul t o f thi s contamination , fiv e location s wer e fitte dwit h carbo n filter s i n 1983 . Thi s numbe r increase dt o te n location s b y 1988 . I n 1995 , awate r lin e wa s installe dt o serv e th e propertie s wit h contaminate dwate r

supplies . Fro m198 4 - 1995 , th e Eastlan dWoole n Mil l performe daserie s o f environmenta l assessments . Th e EastlandWoole n Mil l cease dt o operat e i n 1996 . Al l o f th e equipmen t

an dlan dwer e eithe r

sol da t acredito r auctio n o r

take n b y th e Tow n o f

Corinn at o addres s ta x liability . Afte r th e closure o f

th e Eastlan dWoole n Mill , th e Stat e o f Main e performe darespons e actio n i n 199 7 t o remov e hazardou s material s fro mth e forme r mil l buildings . Th e Stat e o f Main e als o provide dtechnica l an dfinancia l support t o maintai n th e Corinn aWate r Distric t afte r closur e o f the mill . In 1998 , EPA began investigatio n activitie s at the Eastlan dWoole n Mill . In Jul y 1999 , EP A place dth e Eastlan dWoole n Mil l sit e o n th e Nationa l Prioritie s Lis t an dsigne da n Actio n Memorandu mt o begi n aNon-Time-Critica l Remova l Actio n (NTCRA ) t o addres s sourc e materials . Fro m199 9 throug h 2002 , EP A performe dth e RI/F S fo r th e Eastlan dWoole n Mill . I n Septembe r

2002 , EP A signe daRO D fo r O U I o f th e Eastlan dWoole n Mil l Superfun dSit e t o addres s contaminan t

sourc e materia l remainin g afte r th e NTCR A a s wel l a s th e associate d groundwate r

contamination . The OU I RI/F S als o identifie danddesignate dsedimen t and associate dfloodplai n area s o f th e EBS Ra s wel l a s th e ol ddum p a s asecon doperabl e uni t (O U II ) fo r th e Site . EP A signe daN o Furthe r Actio n RO D fo r

th e O U I I portio n o f

th e Sit e i n Septembe r

2004 .

c. . Enforcemen t

History : Enforcemen t

activitie s hav e bee n limite db y th e lac k o f viabl e potentiall y responsibl e partie s (PRPs ) at th e Site . Eastlan dWoole n Mil l cease dt o operat e i n 1996 . Th e family-owne d compan y i s no w defunc t

(i t cease doperation s shortl y afte r completin g areorganizatio n pla n pursuan t t o Chapte r

7 o f th e Bankruptc y Code) , an dmos t o f it s officer s ar e deceased . Th e Site i s currentl y owne db y numerou s entities , includin g th e Tow n o f Corinn aan dth e Stat e o f Maine . Th e Stat e acquire dit s titl e throug h eminen t domai n an dabandonment , an dth e Tow n o f Corinn aacquire dits titl e throug h tax foreclosure/eminen t domain . Ther e is currentl y one privat e owner o f aportio n o f

th e Mil l comple x wh o acquire dtitl e a t acreditor' s auction . EP A i s continuin g t o investigat e it s enforcemen t option s a t

th e Eastlan dWoole n Sit eEASTLAN D WOOLE N MIL LPRELIMINAR Y CLOSEOU T REPOR T

d . Remedia l Constructio n Activities : 

### Constructio n fo r

th e NTCR A wa s performe dfro m199 9 throug h200 5 an dconsiste dof : demolitio n o f

th e mil l comple x buildings , constructio n o f atemporar y low-temperatur e therma l desorptio n soi l treatmen t

system ; excavation , stockpiling , an don-sit e therma l treatmen t o f contaminate dsoil s fro mfiv e areas ; rive r channe l diversio n an drelocation ; remova l an ddisposa l o f debri s an dhazardou s waste ; constructio n o f atemporar y groundwate r

extractio n an dtreatmen t syste mt o contro l groundwate r encountere ddurin g excavatio n activitie s an dsubsurfac e investigations ; constructio n o f temporar y in-sit u chemica l oxidatio n (ISCO ) injectio n well s i n thre e overburde n sourc e area s fo r remedia l treatmen t

applications , surveyin g services , an dsite restoration . Constructio n fo r

th e O U I Remedia l Actio n wa s performe dfro m200 5 throug h2006 , consistin g o f publi c wate r

supply connections , temporar y ISC O injectio n wel l constructio n i n on e bedroc k sourc e area , temporar y groundwate r extractio n well s t o assis t

i n oxidan t

contro l durin g treatment , overburde n an dbedroc k long-ter mmonitorin g wel l installations , an dsit e restoration . Constructio n Contractor s 

### Th e U.S . Arm y Corp s o f

Engineer s (USAGE) , throug ha n interagenc y agreement , provide d residen t engineerin g service s an dconstructio n administratio n fo r th e NTCR A an dRemedia l Action . Th e USAG E contracte dwit hWesto n Solutions , Inc . (Weston ) o f Manchester , Ne w Hampshir e t o provid e th e followin g services : demolitio n o f th e mil l comple x buildings ; rive r channe l diversio n an drelocation ; roadwa y an dbridg e constructio n an dda mrepair ; constructio n o f atemporar y low-temperatur e therma l desorptio n soi l treatmen t system ; excavation , undergroun dstorag e tan k removal ; stockpiling , an don-sit e therma l treatmen t o f contaminate dsoil s fro mfiv e areas ; remova l an ddisposa l o f

debri s an dhazardou s waste ; constructio n o f atemporar y groundwate r extractio n an dtreatmen t

system ; surveying ; an dsit e restoration . Lower-tie r subcontractor s t o Westo n include dCianbr o Corporatio n (Cianbro ) o f Pittsfield , Maine , Charte r

Environmenta l o f Wilmington , Massachusett s (Charter ) t o provid e genera l constructio n service s an dtransport an d off-sit e disposal services , an dSever n Tren t Laboratorie s o f

Framingham , Massachusett s t o provid e on-sit e mobil e laboratory analytica l service s Th e USAG E contracte dwithNobi s Engineering , Inc . (Nobis ) o f Concord , Ne w Hampshir e t o provid e th e followin g services : constructio n o f temporary ISC O injectio n well s i n thre e overburde n sourc e area s an don e bedroc k sourc e are afo r

remedia l treatmen t

applications , construction o f

temporary groundwate r

extractio n well s t o assis t

i n oxidan t

contro l durin g treatment , long-termmonitorin g wel l installation s i n overburde n an dbedrock , surveyin g services , an dsite restoration . Lower-tie r subcontractor s t o Nobi s include dCharte r t o provid e general constructio n service s an dtranspor t an doff-sit e disposa l services ; Clean Harbor s o fEASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOU T REPOR T Bangor , Main e t o provid e transpor t an doff-sit e disposa l services ; Boart Longyea r

o f Nort h Reading , Massachusett s t o provid e drillin g an dwel l installatio n services ; Ne w Hampshir e Borin g o f Londonderry , Ne w Hampshir e t o provid e drillin g an dwel l installatio n services ; Great Work s Tes t Boring , o f

Rollinsford , Ne w Hampshir e t o provid e drillin g an dwel l installatio n services , Oes t Associate s o f

Portland , Main e t o provid e topographi c an dlocatio n surveyin g services ; an d Amr o Environmenta l Laboratorie s o f Merrimack , Ne w Hampshir e t o provid e off-site , fixe d laboratory analytica l services . Buildin g Demolitio n an dRelocatio n T o provid e acces s t o contaminate dsoi l an dsedimen t beneat h th e Mil l an dresidential/commercial building s tha t

wer e source s o f

contaminatio n t o loca l groundwater , buildin g demolition s wer e performe db y Weston , Cianbro , an dthei r subcontractors . Th e mil l building s wer e demolishe d an dremove dt o thei r

foundation s b y betwee n Novembe r 199 9 an dMa y 2000 . Th e Pum p Hous e demolitio n wa s performe di n 2001 . Fiv e residential/commercia l buildin g wer e als o demolishe d i n 200 0 i n Are a1 . I n additio n th e wor k include dth e relocatio n o f th e Od dFellow s buildin g i n Octobe r 200 0 an dth e re-locatio n o f undergroun dsewe r

an dwate r

utilitie s fro mJul y throug h Octobe r 2000 . Rive r Channe l Diversio n An dRelocatio n Betwee n Jun e an dAugus t 2001 , Westo n relocate dth e EBS Rt o ane w channel , eas t o f th e origina l channel , t o enabl e acces s t o contaminate dsoi l i n Are a1 belo w tha t ol dchanne l an dt o alig n th e ne w channe l wit h th e ne w Rout e 7 bridge . Wate r began flowin g throug h thi s ne w channe l o n Augus t

17 , 2001 . Additiona l rive r ban k gradin g an dplanting/restoratio n activitie s nort h o f th e Rout e 7 bridg e wer e conducte di n Septembe r 2003 . Roadwa y an dBridg e Constructio n an dDa mRepai r T o allo w acces s t o th e contaminate dsoi l an dby-pas s traffi c durin g excavatio n activities , a temporary realigne dRout e 7 an dbridg e wa s constructe db y Cianbr o betwee n Octobe r 200 0 an d Augus t 200 1 t o allo w abandonmen t an ddemolitio n o f

th e ol dRout e 7 an dbridg e t o acces s contaminate dsoi l underlyin g Are a1 . Cianbr o wa s als o responsibl e fo r th e installatio n o f

erosio n controls , stormdrains , curb s an dsidewalks , pavemen t markings , an dlandscaping . Thi s phas e o f work include dth e constructio n o f ane w Rout e 7 bridg e t o cros s th e relocate drive r channel . Th e ne w roa dalignmen t

an dbridg e wa s surveye db y th e MEDOT . Upo n completion , MEDO T accepte dresponsibilit y fo r thes e feature s an dcomplete dth e work t o provid e fo r

th e permanen t roa dalignmen t

i n tha t location . Betwee n Jun e an dAugus t 2002 , th e ne w Rout e 42/Palmyr aSpu r Roadwa s constructe db y Frank L . Woodworth (subcontracto r t o Weston) . Thi s work

include dth e constructio n o f aroadway tha t extend s fro mth e intersectio n o f Palmyr aRoa dan dSt . Alban s Roa d(Rout e 43 ) t o th e ne w Rout eEASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOUT REPOR T 

### 7 . T o replac e th e railroa dbridg e demolishe ddurin g th e excavatio n activities , ane w recreationa l bridg e wa s constructe db y York Bridg e (subcontracto r

t o Weston ) betwee n Octobe r an d Novembe r

2001 t o span th e relocate drive r channe l south o f

th e realigne dRout e 7 bridg e t o provid e recreationa l us e o f th e rai l trail . Du e t o th e lowerin g o f

wate r i n Mil l pon da s part

o f th e rive r relocatio n activities , seepag e throug h th e eas t

sid e o f th e Corunde l Darn' s earthen/roc k fille dembankmen t

worsene dan d require drepair . Thi s work wa s performe db y Westo n betwee n October an dNovembe r

2001 . Undergroun dStorag e Tan k Remova l Undergroun dstorag e tank s (USTs ) tha t wer e formall y associate dwith th e Mil l t o store chemical s an dfue l wer e decontaminate dan dremove dfro mth e Sit e b y Westo n durin g 200 0 an d2001 . Al l US T removal s wer e performe di n accordanc e wit h MEDE P protocols . US T removal s included : tw o 10,00 0 gallo n No . 6 fue l oi l UST s i n Are a4 - Buildin g 9 (remove dOctobe r 2000) ; on e 30,00 0 gallo n No . 6 fue l oi l US T i n Are a4 (remove dDecembe r 2000) ; apotio n o f

on e 30,00 0 gallo n US T i n Are a4 - Pum p Hous e (remove dJul y t o Septembe r 2001) ; on e US T locate dbelo w th e forme r

Chemica l Storag e Buildin g an dpresume dt o hav e containe deithe r dy e ai do r ammoni a(remove di n Octobe r 2001) ; on e 90 0 gallo n No . 2 fue l oi l US T locate di n Lo t 11 8 (remove di n 2001) . Contaminate dSoi l Excavation , Stockpiling , an dOn-Sit e Therma l Treatmen t Durin g 200 0 an d2001 , Westo n excavate dan dstockpile dapproximatel y 50,00 0 cubi c yard s o f chlorinate dbenzen e contaminate dsoil s fro mArea s 1 an d4 (30,00 0 gallo n US T Area , US T Area , an dBuildin g 9 ) an d25,00 0 cubi c yard s o f soi l fro mArea s 2 an d3 . A tota l o f approximatel y 75,00 0 cubi c yard s o f

chlorinated-benzen e contaminate dsoil s wer e excavated . Followin g excavation , th e contaminate dsoi l wa s screene dt o remov e oversiz e materia l an d temporaril y stockpile dat

th e site i n line dcontainmen t structures . Th e oversiz e materia l wa s crushe dan dwashe db y Charte r an drecycle don-site a s backfil l o r drainag e material . Soi l screenin g t o remov e oversize dmateria l wa s performe dbetwee n Jul y an dDecembe r 2001 . Betwee n October

200 1 an dDecembe r

2002 , pilo t

an dperformanc e testin g o f on-sit e low

temperatur e therma l desorptio n soi l treatmen t (LTTT ) system s wa s performed . Th e result s o f thes e pilo t

test s indicate dtha t

LTT T coul dmee t

establishe dtreatmen t

goal s an dth e treate dsoi l woul db e suitabl e fo r

us e a s backfil l i n th e excavate dareas . Westo n conducte dengineerin g an d procuremen t

o f th e LTTT syste mbetwee n Marc h an dApri l 200 2 an dconstructio n o f th e syste m began i n May 2002 . Th e syste mconsiste do f eigh t treatmen t

bins , aho t

ai r injectio n system , proces s emissio n extraction an dtreatmen t system , contro l an dmonitorin g equipment , an daEASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOUT REPOR T condensat e an dsurfac e wate r collectio n system . Full-scal e on-sit e treatmen t o f contaminate dsoi l began i n Ma y 200 3 an dwa s complete di n Octobe r 2003 . Durin g pilot-testin g an dfull-scal e treatment , approximatel y 89,00 0 ton s o f contaminate dsoi l wa s treate db y LTTT . Constructio n o f

th e Temporar y Groundwate r Extractio n an dTreatmen t Syste m T o support

th e NTCR A excavation , therma l treatmen t activities , an dISC O treatmen t program , a temporar y groundwate r

extractio n an dtreatmen t

syste mwa s constructe dt o ai di n contro l o f groundwate r

infiltratio n an dmigration . On e bedroc k wel l an dfou r

overburde n well s wer e connecte dt o th e temporary treatmen t syste mbetwee n Augus t

an dSeptembe r

2001 . Thi s syste m remaine doperational unti l Novembe r 200 4 t o provid e hydrauli c contro l over th e groundwater plum e durin g th e initia l phas e o f th e NTCRA . Sinc e th e excavatio n activitie s wer e completed , th e temporary groundwate r extractio n an dtreatmen t

syste mha s bee n operate da s necessar y t o support th e NTCR A ISC O program . Fou r additiona l temporar y overburden/shallo w bedroc k extractio n well s wer e installe di n Septembe r 200 4 an dJul y 200 6 t o support Are a1 ISC O pre desig n studie s an dISC O treatment . Th e temporar y groundwate r extractio n an dtreatmen t

syste m i s complete dan dn o furthe r constructio n i s necessary . Th e syste mwil l b e de-commissione dafte r th e completio n o f

th e ISC O progra mi n 2008/2009 . Remova l an dDisposa l o f Debri s an dHazardou s Wast e Asbesto s containin g material s (ACM ) wer e remove dfro mth e Site , thoroughl y wetted , doubl e bagged , seale dan dproperl y labeled . Containerize dAC M wa s dispose do f in-stat e b y Wast e Managemen t

Disposal Service s o f

Norridgewock , Maine . AC M include d30,00 0 squar e fee t o f roofing , transite , insulatio n an dtile s an d16,50 0 linear fee t o f pipin g an droofing . Hazardou s material s wer e transporte dfo r off-sit e disposa l betwee n 199 9 an d2004 . Th e majorit y o f th e hazardou s waste wa s remove ddurin g th e buildin g demolitio n phase . Approximatel y 7,00 0 ton s o f contaminate dsoi l di dno t mee t th e Soi l Treatmen t

Goal s an dwa s transporte doff-sit e b y Charte r fo r furthe r treatmen t

an ddisposa l b y GS I Environmental , Inc. . Bedroc k Pre-Desig n Studie s an dInvestigation s A serie s o f

additiona l studie s an dinvestigation s were performe dbetwee n 200 3 an d200 5 t o develo p th e desig n fo r

th e NTCR A ISC O progra man dth e in-sit u treatmen t portio n o f

th e Site Action. Th e informatio n fro mth e studie s wa s als o use dt o develo p th e Remedia l Desig n tha t wa s approve di n Augus t

200 5 an dt o develo p th e implementatio n work plan s fo r th e O U I Remedia l Actio n an dinclude dth e followin g activities : Fiftee n bedroc k

borehole s wer e drille di n Are a1 durin g Jun e an dJul y 2004 . Bedroc k fracture s wer e characterize db y borehol e geophysics , an dwate r sample s wer e collecte db y packe r methods . Shallo w fractur e DNAP L distributio n androc k matri x propertie s wer e assesse dbyEASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOU T REPOR T methano l extracte droc k

sample s (MERC) . Thes e wel l location s provid e characterizatio n dat a fo r th e Are a1 bedroc k

groundwate r

an dcontribut e t o th e overal l understandin g o f th e bedroc k fractur e syste man dit s behavio r unde r pumpin g conditions . A multi-wel l hydrauli c contro l pum p tes t wa s conducte di n Septembe r an dOctobe r

200 4 utilizin g te n pumpin g well s (EW-2 , EW-3 , EW-4 , EW-5 , EW-6 , EW-7 , BM-31 , BM-35 , BM-36 , an dBM-04) . Durin g th e test , individua l wel l flo w rate s wer e graduall y increase do r decrease ddependin g o n individua l wel l responses . Followin g th e hydrauli c contro l pump test , aconservativ e interwel l trace r tes t (CITT ) wa s designe dan dperforme ddurin g Octobe r 200 4 unde r

force dgradien t

condition s t o demonstrat e tha t measurabl e flo w path s exis t withi n th e aquifer . A partitionin g trace r tes t (PITT ) wa s als o performe di n conjunctio n wit h th e CIT T t o asses s th e volum e o f DNAP L contacte dwithi n th e swep t aquife r volume . Electrica l resistivit y tomograph y (ERT ) an dinduce dpolarizatio n tomograph y (IPT ) wa s conducte dprio r t o an di n conjunctio n wit h th e CIT T t o identif y preferentia l pathway s an dpotentia l DNAP L i n th e bedrock . Durin g Novembe r

an dDecembe r

2004 , thre e off-sit e bedroc k borehole s wer e installe do n th e propert y Map 1 8 Lo t

9 3 an dagroundwate r

pumpin g tes t

wa s complete dusin g thes e borehole s t o refin e estimate s o f

aquife r transmissivit y an danisotrop y a t location s eas t

o f th e EBS Rt o b e use d i n groundwate r

flo w an dcontaminan t

transport numerica l mode l simulation s Constructio n o f

Temporar y In-Sit u Chemica l Oxidatio n Injectio n Well s Thre e area s o f

contaminate dsoi l coul dno t b e excavate ddurin g th e NTCR A du e t o th e dept h o f th e contaminatio n an dproximit y t o Rout e 7 . On e are awa s locate dwithi n Are a1 an dth e othe r tw o withi n th e Are a4 US T Are aan dBuildin g 14 . Thes e remainin g contaminate dsoil s ar e locate di n th e saturate dzon e betwee n depth s o f si x t o 4 0 fee t

belo w groun dsurfac e (bgs) . Soi l contaminatio n i n th e US T Are aattributabl e t o th e Sit e i s assume dt o exten dalimite ddistanc e beneath Rout e 7 . Th e fina l phas e o f

th e NTCR A targete dth e reductio n o f contaminatio n i n thes e sourc e area s usin g a n ISC O program . I n Jun e an dJul y 2004 , 2 3 ISC O injecto r well s wer e installe di n Are a1 t o depth s rangin g fro m3 5 t o 4 0 fee t bgs . Followin g injecto r

installations , afield-scal e pilo t stud y wa s performe di n Novembe r 200 4 t o evaluat e th e effectivenes s o f tw o potential oxidan t technologies , Fenton' s reagen t an diron-catalyze dsodiu mpersulfat e (ICP) . Th e result s o f thi s pilo t stud y indicate dtha t

IC P achieve dsuperio r

subsurfac e distributio n relativ e t o Fenton' s reagen t du e t o it s longe r

reactio n half-life . Post-pilo t stud y soi l samplin g suggeste dthat a48 % tota l mas s reductio n attributabl e t o IC P wa s achieve dove r th e pilo t stud y area . Base dupo n thes e results , IC P wa s selecte da s th e oxidan t fo r full-scal e treatmen t

applicatio n fo r

th e NTCR A an d Remedia l Actio n ISC O programs . I n sprin g 2005 , ful l scal e NTCR A ISC O began , an d2 0 injecto r well s wer e installe di n th e US T Are aan dth e forme r

Buildin g 1 4 Are at o depth s rangin g fro m1 5 t o 3 0 fee t bg s t o treat

th eEASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOUT REPOR T remainin g contaminate dsoi l belo w th e wate r table . ISC O treatmen t

consiste do f

tw o full-scal e injection s o f

ICP , followe db y confirmator y soi l boring s an dgroundwate r sampling . Thes e injection s wer e performe di n Jul y an dOctober/Novembe r 2005 . A tota l o f

13,31 9 gallon s o f persulfat e solutio n an d13,51 4 gallon s o f chelate diro n solutio n wer e delivere dt o th e US T an d Buildin g 1 4 areas . Confirmator y soi l boring s an dgroundwate r samplin g indicate da n approximat e 90 % reductio n o f dissolve dphas e contaminatio n an dan approximat e 71 % reductio n i n sorbe dphas e soi l contaminatio n followin g th e initia l ISC O program . Th e O U I Remedia l Actio n wil l includ e long-termmonitorin g of the UST andforme r

Buildin g 14 area s to confir m whethe r groundwate r

restoratio n i s achieved . I n Augus t 2005 , on e full-scal e roun do f ISC O treatmen t

wa s appliedt o th e remainin g soi l contaminatio n i n Are a1 . IC P wa s delivere dt o th e subsurfac e vi a1 1 ISC O injecto r wells . Approximatel y 19,25 6 gallon s o f persulfat e an d19,42 3 gallon s o f chelate diro n solutio n wer e delivere dt o th e treatmen t

area . Confirmator y groundwate r samplin g performe dfollowin g full

scal e ISC O applicatio n indicate dareductio n o f dissolve dphas e contaminatio n b y approximatel y 

### 63% . I n Jun e an dJul y 2006 , fou r shallo w bedroc k

injecto r well s wer e installe di n Are a1 t o provid e ISC O treatmen t

o f shallo w bedroc k

contamination . A s part

o f th e Remedia l Action , additiona l full-scal e ISC O injection s ar e planne dfo r th e Are a1 overburde n an dbedrock . A t th e en do f

th e ISC O program , al l well s no t include di n th e long-ter mmonitorin g progra mo r bio-stimulan t

injectio n progra mwil l b e de-commissioned . N o additiona l injecto r well s ar e planne dfo r

th e ISCO . Surveyin g Service s Periodi c topographi c mappin g o f th e sit e wa s performe dbetwee n 200 0 an d200 4 b y Weston . Additiona l as-buil t

monitorin g well an dtreatmen t wel l survey s wer e conducte db y OES T Associates , In c i n Jul y 2004 . Subsequently , locatio n survey s wer e performe do n several occasion s t o determin e th e horizonta l coordinate s and/o r vertica l elevation s o f

monitorin g an d treatmen t well s tha t

were installe dat

differen t times . A n as-buil t

surve y o f th e restore dSite , redevelopment , an dabuttin g propert y boundarie s wa s complete db y Webbe r Surveying , Inc . i n Novembe r

2005 . Constructio n o f

Long-Ter mMonitorin g Well s I n support o f th e Site Long-TermMonitorin g Plan , 1 1 overburde n an d4 bedroc k monitorin g well s wer e installe dat , o r

i n th e vicinit y o f

th e Sit e fro mJun e throug h Jul y 2006 . Th e ne w overburde n well s wer e installe dutilizin g cas e an dwas h o r rotasoni c drillin g techniques . Th e monitorin g well s wer e develope dusin g acombinatio n o f overpumping , manua l surging , an d bailing . Wel l Constructio n an ddevelopmen t wa s performe di n accordanc e wit h th e Sit e Long

-EASTLAN D WOOLE NMIL L PRELIMINAR Y CLOSEOU

T REPOR T TermMonitorin g Pla n date dApri l 14 , 200 6 an dth e USAG E Enginee r Manua l No . EM-1110-1

- 4000 , Monitorin g Wel l Design , Installation , andDocumentatio n at Hazardous , Toxic , or Radioactiv e Wast e Sites , Novembe r 1998 . Publi c Wate r

Suppl y Connection s I n suppor t o f th e Institutional Contro l Zone , constructio n o f publi c wate r

supply connectio n to thre e residence s (Ma p 1 8 Lo t 52 , Ma p 1 8 Lo t 43 , an dMa

p 1 8 Lo t 39 ) wa s performe dbetwee n Septembe r

an dNovembe r

200 5 b y Paradis (subcontracto r t o CENAE) . Th e Institutiona l Control s are bein g developed . EP A an dMain e DE P are workin g together t o implemen t

th e institutiona l controls . Th e expectatio n i s tha t restrictiv e covenant s wil l b e use dt o preven t futur e groundwate r

use . Th e Tow n o f

Corinn awoul dals o institut e a n ordinanc e t o prohibi t groundwate r

us e i n th e Institutiona l Contro l Zone . Constructio n Chronolog y A summar y o f

constructio n chronolog y i s presente dbelow . Th e Actio n Memorandu mwa s signe di n Jul y 1999 . On-sit e NTCR A activitie s commence di n 199 9 an dwer e conclude do n Decembe r 23 , 2005 . Durin g thi s period , constructio n activitie s occurre dwithi n separate work area s ove r differen t period s o r

a s ne w development s a t

th e sit e resulte di n th e expansio n o f ongoin g activities . NTCR A wor k area s ar e describe das : Are a1 (th e regio n underlyin g mil l Building s 1 , 1A , an d3) , Are a2 (th e rive r segmen t dow n rive r

fro mth e mil l t o th e abandone d railroa dtrestle) , Are a2 a(th e rive r segmen t unde r th e abandone drailroa dtrestl e an doverlappin g Are a2 an dAre a3) , Are a3 (th e rive r segmen t fo r adistanc e severa l hundre dfee t beyon dth e railroa dtrestle) , an dAre a4 (includin g Lo t 88 , Buildin g 9 , US T Area , an dothe r miscellaneou s areas) . NTCR A Chronolog y Decembe r 199 9 t o May 200 0 Demolitio n an dremova l o f th e mil l building s Jul y 200 0 Are a4 - Buildin g 4 soi l excavatio n an dbackfil l Jul y t o Octobe r

200 0 Sewe r

an dwate r

utilit y relocatio n Jul y t o Octobe r

200 0 Are a3 soi l excavatio n an dbackfil l Augus t t o Octobe r

200 0 Are a2 an dAre a2. asoi l excavatio n an dbackfil l October 200 0 Relocatio n o f OD D Fellow s Hal l 1 0EASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOUT REPOR T Octobe r 200 0 Are a4 - Lo t 8 8 soi l excavatio n an dbackfil l Octobe r t o Novembe r

200 0 Are a4 - Buildin g 9 US T removal , soi l excavatio n an dbackfil l an dJun e 200 1 Octobe r 200 0 t o Augus t

200 1 Constructio n o f

temporar y by-pas s fo r

Rout e 7 , includin g bridg e fo r Rout e 7 Novembe r

t o Decembe r

200 0 an dJun e t o Jul y 200 1 Jun e t o Augus t

200 1 Jul y t o Septembe r

200 1 Jul y t o Decembe r

200 1 Augus t 200 1 Augus t t o Decembe r

2001 Augus t t o Decembe r

200 1 Septembe r

t o Octobe r

200 1 Octobe r 200 1 October t o Novembe r

200 1 May t o Decembe r

200 2 Jun e t o Augus t

200 2 May t o Octobe r

200 3 Augus t 200 4 200 4 Jun e t o Jul y 200 4 Are a4 - 30,00 0 gallo n US T removal , soi l excavatio n an d backfil l Rive r diversio n Are a4 - Pum p Hous e soi l excavatio n an dbackfil l Contaminate dsoi l screenin g an doversiz e materia l washin g Are a1 - Buildin g 1 A soi l excavatio n an dbackfil l Are a1 soi l excavatio n an dbackfil l Constructio n o f

NTCR A groundwate r

extractio n an dtreatmen t syste m Restoratio n o f

Mil l Pon d Are a1 Chemica l Storag e Buildin g US T remova l Corunde l Da mrepai r Low-temperatur e therma l desorptio n (LTTT ) syste mpilo t stud y an dperformanc e testin g Rout e 42/Palmyr aSpu r

Roadconstructio n LTT T full-scal e soi l treatment , backfill , an doff-sit e transport Buildin g 1 4 Soi l Excavatio n Westo n Site,Restoratio n Are a1 constructio n o f

temporary overburde n an dbedroc k ISC O 

### 1 1EASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOUT REPOR T

injectio n well s an dbedroc k borehole s Novembe r

200 4 Are a1 overburde n ISC O pilo t stud y an dperformanc e testin g Ma y t o Jun e 200 5 Are a4 - Buildin g 1 4 an dUS T Are aconstructio n o f temporar y overburde n ISC O injectio n well s Jul y t o Novembe r

200 5 Are a4 - Buildin g 1 4 an dUS T Are afull-scal e overburde n ISC O

treatment s September 200 5 Are a1 full-scal e overburde n ISC O treatment s Decembe r 200 5 NTCR A fiel dactivitie s complet e Remedia l Actio n Chronolog y Septembe r

t o Octobe r

200 5 Constructio n o f publi c wate r

suppl y connection s May t o Septembe r

200 6 Are a4 wel l decommissionin g an dsit e restoratio n (Buildin g 1 4

an dth e US T Area ) Jun e t o Jul y 200 6 Constructio n o f long-ter mmonitorin g well s i n overburde n an d bedroc k Jun e t o Jul y 200 6 Constructio n o f temporary bedroc k

borehole s an dgroundwate r extractio n well s fo r

ISC O applicatio n Jun e t o Septembe r

200 6 Bedroc k

ISC O benc h studie s an dperformanc e testin g September 200 6 Lo t 8 8 wel l decommissionin g sit e restoration September 200 6 O U I Constructio n activitie s complet e Septembe r

t o Novembe r

200 6 Are a1 ongoin g full-scal e ISC O treatmen t o f overburde n an d bedroc k

1 2EASTLAN D WOOLE N MIL L PRELIMINAR Y CLOSEOU T REPOR T



### III . DEMONSTRATIO N O FQUALIT Y ASSURANC E AN D QUALIT Y CONTRO L Al l wor k performe da t

th e Sit e wa s consisten t

wit hth e Actio n Memorandum , O U I ROD , an dth e fina l desig n th e NTCR A an dO U I . EPA , o n it s own , an dthroug hth e U.S . Arm y Corp s o f Engineer s performe doversigh t o f th e NTCR A an dO U I constructio n activitie s i n additio n t o th e qualit y contro l an dqualit y assuranc e activitie s performe db y th e contractor . Al l samplin g wa s implemente dusin g EPA , ASTM , o r othe r standar dpractices . Al l constructio n qualit y an dperformanc e dat awa s reviewe db y EP A a s part o f th e oversigh t

o f th e constructio n activities . Th e dat apertainin g t o th e limit s o f excavatio n an dth e treatmen t o f soi l alon g withth e performanc e dat afro mth e in-situ oxidatio n programwa s use dt o documen t th e achievement

o f th e desig n requirement s fo r thes e component s o f

th e work . Ambien t

ai r samplin g wa s performe d t o confir mcomplianc e wit hth e Main e Ambien t Ai r Standard s an dEP A ris k

base dstandard s durin g th e excavatio n an dex-sit u treatmen t activities . Al l construction qualit y contro l an dqualit y assuranc e informatio n i s availabl e a t th e EP A Regio n I Record s Cente r

i n Boston , MA . Th e QA/Q C progra mutilize dthroughou t th e constructio n progra mwa s sufficientl y rigorou s an dwa s adequatel y complie dwit ht o enabl e EP A an dth e Stat e t o determin e tha t

th e result s reporte dar e accurat e t o th e degre e neede dt o assur e satisfactor y executio n o f

th e NTCR A consisten t

wit hth e Actio n Memorandu man dth e O U I RO D an dth e accepte ddesig n fo r

O U I . EP A an dMain e DE P performe dafina l inspectio n o n Septembe r 19 , 2006 . Bot

hEP A an dMain e DE P conclude dtha t

constructio n activitie s wer e complete . N o punc hlis t item s were identified .

1 3EASTLAN D WOOLE N MIL L PRELIMINAR Y CLOSEOU T REPOR T

IV . ACTIVITIE S AN D SCHEDUL E FO RSITE COMPLETIO N 

### Th e followin g activitie s wil l b e complete daccordin g t o th e schedul e i n Tabl e I below : TABL E 1 TAS K Operatio n an dFunctiona l Determinatio n Institutiona l Control s De-commissio n ISC O well s an d temporary groundwate r

extractio n an dtreatmen t

syste m Long-ter mRespons e Actio n Activitie s (monitorin g an dperiodi c injections ) Fiv e Yea r Revie w Long-TermMonitorin g Completio n Interi mR A Report Fina l R A Report Final Inspectio n Fina l Clos e Ou t

Report / Approva l ESTIMATE D

COMPLETIO N Septembe r

200 7 200 7 2008/200 9 

### 201 7

Septembe r

2 0 1 1 Septembe r

208 7 Septembe r

200 7 Septembe r

208 7 September

208 7 Septembe r

208 7 RESPONSIBL E ORGANIZATIO N EP A an dMain e DE P EP A an dMain e DE P EP A 

### EP A responsibl e fo r

1 0 year s afte r Operationa l an dFunctiona l Determination , unles s groundwate r

restoratio n i s achieve d EP A 

### EP A fo r year s 1-10(2007

- 20017 ) an dStat e o f

Maine , thereafte r EP A EP A EP A EP A 

### Al l preliminar y completio n requirement s fo r th e Site hav e bee n me t

a s specifie di n Clos e Ou t Procedure s fo r

Nationa l Prioritie s Lis t

Sites, " OSWE RDirectiv e 9320.2-09A-P , Januar y 2000 . Specifically , al l constructio n activitie s identifie di n th e NTCR A an dO U I RO D hav e bee n successfull y implemente dan dafina l inspectio n b y EP A an dth e Stat e ha s bee n conducted . Th e NTCR A an dO U I constructio n activitie s hav e bee n completed . Th e long-ter mrespons e actio n wil l b e performe db y EP A fo r 1 0 years . EP A wil l perfor m periodi c injection s o f

in-situ reagent s an dbiostimulants . Th e long-ter mrespons e actio n wil l ru n unti l 201 7 whe n th e State o f Main e wil l tak e contro l o f th e remedia l action . 1 4EASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOUT REPOR T Th e fina l RO D fo r

th e Sit e ha s bee n completed . Th e O U I RO D Amendmen t complete di n Septembe r

200 6 documente dtha t

th e long-ter mgroundwate r extractio n an dtreatmen t

an d enhance dflushin g wit h surfactants/co-solvent s i s no t required . Therefore , n o additiona l constructio n activitie s ar e expecte da t thi s time . V . Cos t EP A provide dth e USAG E wit h $46,023,53 4 i n fundin g fo r th e NTCRA . O f

tha t $43,246,55 0 wa s expende dfo r

th e soi l excavatio n an dtreatmen t progra man d$2,776,98 4 fo r NTCR A ISC O Th e Remedia l Actio n ISC O i s expecte dt o cos t $3. 8 million . VI . FIV E YEA RREVIE W Th e fina l RO D fo r

th e Eastlan dWoole n Mil l Superfun dSit e wa s signe dpost-SAR A an dth e statut e require s afiv e year revie w i f wast e wil l remai n on-site . EP A wil l perfor mastatutor y fiv e yea r review s a t

thi s Site . Th e firs t

fiv e yea r revie w wil l b e complete db y Septembe r 2011 . EP A an dth e Stat e wil l determin e an ddocumen t sit e completio n i n accordanc e wit h "Clos e Ou t Procedure s fo r

Nationa l Prioritie s Lis t

Sites, " OSWE RDirectiv e 9320.2-09A-P , Januar y 2000 . A bibliograph y o f

al l report s relevan t

t o th e preliminar y completio n o f thi s Sit e unde r

th e Superfun dprogra mi s attached . Thes e document s ar e availabl e fo r revie w b y callin g th e Regio n I Record s Cente r

a t (617 ) 918-1453 . Approve dby :

Susan Studlien , Directo r

Dat e Offic e o f Site Remediatio n an dRestoratio n EP A Ne w Englan d

1 5EASTLAN D WOOLE NMIL L PRELIMINARY CLOSEOUT REPOR T 

### Bibliograph y Nobi s Engineering , Inc . (2003)
. Institutiona l Contro l Zon e Refinemen t Approac h an d Tas k Plan ; Operabl e Uni t 1 GW- 4 Remedia l Action , Eastlan d Woole n Mil l Superfun d Site , Corinna , Maine . Nobi s Engineering , Inc . (2004a)
. Fina l Conservativ e Interwel l Trace rTes t Desig n ; Operabl e Uni t 1 GW- 4 Remedia l Action , Eastlan d Woole n Mil l Superfun d Site , Corinna , Maine . Nobi s Engineering , Inc . (2004b)
. Phas e I I Tas k Pla n Rev . 01 ; Operabl e Uni t 1 GW- 4 Remedia l Action , Eastlan d Woole n Mil l Superfun d Site , Corinna , Maine . Nobi s Engineering , Inc . (2005a)
. Conceptua l Mode l Update ; Eastlan d Woole n Mil l Superfun d Site , Operabl e Uni t 1 GW- 4 Remedia l Action , Corinna , Maine . Nobi s Engineering , Inc . (2005b)
. Remedia l Design ; Operabl e Uni t 1 , Eastlan d Woole n Mil l Superfun d Site , Corinna , Maine , Augus t 2005 . Nobi s Engineering , Inc . (2005c)
. Phas e I Tas k Pla n Rev . 02a ; Operabl e Uni t 1 GW- 4 Remedia l Action , Eastlan d Woole n Mil l Superfun d Site , Corinna , Maine . Nobi s Engineering , Inc . (2005d)
. Are a Wid e Groundwate rSamplin g Technica l Memorandum ; Eastlan d Woole n Mil l Superfun d Site , GW- 4 Remedia l Action , Corinna , Maine , Marc h 2005 . Nobi s Engineering , Inc . (2005e)
. Institutiona l Contro l Zon e Groundwate rModelin g Report ; Eastlan d Woole n Mil l Superfun d Site , GW- 4 Remedia l Action , Corinna , Maine , 2005 . Nobi s Engineering , Inc . 200 5 Phas e I an d Phas e IIISC O Remedia l Performanc e Assessment , Ma y 200 6 Ro yF . Weston , (Weston ) (2001)
. Fina l Completio n Repor t Area s 2,3,4-Lo t 88an d 4-Buildin g 4 Soi l Remediatio n Non-tim e Critica l Remova l Action , Eastlan d Woole n Mil l Superfun d Site , Corinna , Maine , Jun e 2001 . Ro yF . Weston , (Weston ) (200 2 i n press)
. Fina l Completio n Repor t Area s 1 an d 4 Soi l Remediatio n Non-tim e Critica l Remova l Action , Eastlan d Woole n Mil l Superfun d Site , Corinna , Maine , Jun e 2001 . USEP A (2002)
. EP A Superfun d Recor d o f Decision : Eastlan d Woole n Mil l Superfun d Site , EP A ID : MED980915474 , O U 01 , Corinn a , Maine , Septembe r19 , 2002 , 9 1 pages . USEP A (2004 ) EP A Superfun d Recor d o f Decision : Eastlan d Woole n Mil l Superfun d Site
. O U II , Septembe r200 4 USEPA , EP A Superfun d Recor d o f Decisio n Amendmen t fo rO U I : Eastlan d Woole n Mill , O U I , Septembe r200 6

1 6