MEMORANDU M DATE : BREAK : _ OTHfcR : U.S . ENVIRONMENTA L PROTECTIO N AGENC Y

REGIO N I 1 CONGRES S STREET , SUIT E 1100 , BOSTON , M A 02114-202 3

Jun e 20 , 200 0 Superfun dRecord ^ Cente r 

### SITE : Eqyito M

>3 

## ,\ M

TO : SUBJ : ACTIO N MEMORANDU M - Reques t fo r aceilin g increas e fo r

th e Non-Tim e Critica l Remova l Actio n a t th e Eastlan dWoole n Mil l Superfun dSite , Corinna^Main e



# ;x : FROM : Edwar dM . Hathaway , Remedia l Projec t Manage r ME/VT/C T Superfun dSectio n THRU : Do n Berger , Ch i

OSRRI I Bran . Richar dCavagnero , Chie f Emergenc y Plannin g an dR 'anc h Patrici aL . Meaney , Directo r Offic e o f Sit e Remediatio n an dRestoratio n Sit e ID #01T 6 I . PURPOS E Thi s Actio n Memorandu mrequest s an ddocument s you r approva l o f

aceilin g increas e fo r

th e non-time-critica l remova l actio n (NTCRA ) describe dherei n fo r th e Eastlan dWoole n Mil l Superfun dSite , locate do n Rout e 7 i n Corinna , Maine . Th e Jul y 22 , 199 9 Actio n Memorandu mapprove daconsistenc y exemptio n fro mth e $ 2 millio n an d1 2 mont h statutory limit s o n fun dlea dremova l actions . Th e sam e basi s fo r astatutor y exemptio n applie s t o thi s ceilin g increase . Th e Jul y 22 , 199 9 Actio n Memorandu mapprove daremova l ceilin g o f $9. 7 million . Base dupo n additiona l cost s relate dto:(l ) th e increase dvolume s o f contaminatio n identifie ddurin g th e NTCR A pre-desig n activities ; (2 ) th e nee dfo r extensiv e pretreatmen t

o f certai n soil s prio r

t o excavation ; (3 ) th e nee dfo r apilo t stud y involvin g in-sit u pretreatmen t o f certai n soil s prio r

t o excavation ; (4 ) re-locatio n o f abuildin g a s require db y th e Nationa l Histori c Preservatio n Act ; an d(5 ) cos t

increase s relatin g t o actua l cos t estimate s i n compariso n t o th e initia l estimates . A s state di n th e Jul y 22 , 199 9 Actio n Memorandum , th e overal l objectiv e o f th e NTCR A i s t o eliminat e th e sourc e o f

th e soil , groundwater , an dsedimen t contaminatio n i n orde r

t o protec tACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E

curren t an dfutur e user s o f

groundwate r

at o r near th e Site , futur e user s o f

th e Sit e property , an d ecological receptors . I n genera l terms , th e NTCR A consist s o f th e excavatio n o f

soil s wit h concentration s o f

monochlorobenzene , benzene , (1,2 ; 1,3 ; an d1,4 ) dichlorobenzene , an d(1,2, 3 an d1,2,4 ) trichlorobenzen e abov e th e soi l cleanu p level s establishe di n th e Jul y 22 , 199 9 Actio n Memorandum . Thi s NTCR A wil l b e performe db y EP A usin g fun dmone y a s n o PR P i s availabl e t o implemen t

th e respons e actio n i n atimel y manner . Thi s Actio n Memorandu mdoe s no t includ e an y activitie s tha t

woul drequir e Post-Remova l Site Contro l (PRSC) . Thi s NTCR A wil l ensur e tha t EP A ca n provid e atimel y respons e t o effectivel y minimiz e threat s t o publi c healt

h o r welfar e o r

th e environmen t

whic h ma y resul t

fro mth e continuin g releas e and/o r threat o f releas e o f hazardou s substance s at

an dfro mth e Site , an di s consisten t with EPA' s Superfun dAccelerate dCleanup Mode l (SACM) . II . SIT E CONDITION S AN D BACKGROUN D A . Sit

e Descriptio n CERCLI S I D No. : MED98091547 4 Sit e ID . No. : 01T 6 Categor y Non-time-critical Th e Sit e include s th e forme r

Eastlan dWoole n Mil l an dth e loca l area s contaminate db y th e releas e o f hazardou s substance s fro mth e Eastlan dWoole n Mill . Eastlan dWoole n Mil l wa s a textil e mil l that

began operatio n i n approximatel y 1909 . Th e Eastlan dWoole n Mil l cease d operatio n i n 199 6 an dth e majority o f th e Mil l propert

y i s no w owne db y th e Tow n o f Corinna . 1 . Remova l Sit e Evaluatio n Se e Jul y 22 , 199 9 Actio n Memorandu mfo r thi s information , excep t

that th e forme r

mil l building s hav e no w bee n remove da s part o f th e on-goin g EP A respons e action . 2 . Physica l Locatio n Th e Eastlan dWoole n Mil l Sit e i s locate di n th e Tow n o f Corinna , Penobsco t

County , Maine . Th e Tow n o f

Corinn ai s locate dapproximatel y 2 5 mile s northwes t o f Bangor , Maine . Approximatel y 80 0 person s liv e withi n 1 mil e o f th e Sit e an d2,50 0 wit h 4 miles . Th e Site wa s originall y dominate db y th e 250,00 0 squar e foo t Eastlan dWoole n Mill . Th e forme r

mil l ha s bee n removed . Thre e dam s ar e foun di n th e vicinit y o f th e Site . On e da mi s approximatel y 50 0 fee t nort h (upstream ) o f

th e Eastlan dWoole n Mil l an dserve sACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E

a s th e outle t

fo r Corrunde l Lake . A secon dda mi s locate dbeneat h th e Eastlan dWoole n Mil l an dserve s a s th e outle t fo r th e Mil l Pond . Th e thir dda mi s locate dapproximatel y 0. 5 mile s dow n rive r

o f th e Eastlan dWoole n Mill . Th e Sit e ha s bee n use da s industria l property sinc e at leas t 1912 . Th e Eastlan dWoole n Mil l buildin g ma y hav e bee n constructe da s earl y a s th e lat e 1800's . Th e Eastlan d Woole n Mil l Compan y owne dan doperate dth e mil l fro m193 6 unti l 1996 . Th e compan y asset s wer e sol dat

area l estat

e foreclosur e auctio n i n 1997 . I n 1997 , th e Tow n o f Corinn atoo k

titl e t o th e parce l o n whic h th e majorit y o f th e Eastlan dWoole n Mil l building s ar e located . Th e Eastlan dWoole n Mil l an dit s associate dsid e building s ar e currentl y abandoned . 3 . Site Characteristics : Se e Jul y 22 , 199 9 Actio n Memorandu mfo r thi s information , excep t that th e forme r

mil l building s hav e no w bee n remove da s part o f th e on goin g EP A respons e action . 4 . Releas e o r

Threatene dRelease : Se e Jul y 22,199 9 Actio n Memorandu mfo r thi s information , excep t

tha t th e forme r

mil l building s hav e no w bee n remove da s part o f th e on-goin g EPA respons e action . 5 . NPL Status : Th e Sit e wa s place do n th e NPL i n Jul y 1999 . 6 . Maps , pictures , an dothe r graphi c representations : Se e Jul y 22 , 199 9 Actio n Memorandu mfo r

thi s information , excep t

tha t th e forme r

mil l building s hav e no w bee n remove da s part

o f th e on-goin g EP A respons e action . 7 . Curren t

Statu s o f NTCR A Th e NTCR A wa s initiate dwith th e signin g o f th e Actio n Memorandu mi n Jul y 1999 . Durin g fal l 1999 , EP A bega n th e desig n fo r th e excavatio n an dtreatmen t activitie s an d th e demolitio n o f

th e forme r

Eastlan dWoole n Mill . Th e Mil l buildin g demolitio n wa s complete di n Ma y 2000 . Th e desig n o f th e NTCR A i s expecte dt o b e complet e i n Jun e 2000 . A pre-desig n effor t

t o bette r defin e th e exten t

o f th e contaminatio n requirin g excavatio n wa s performe di n fal l 199 9 an dasecon ddelineatio n progra mwil l b e performe di n May/Jun e 2000 . Mobilizatio n fo r th e excavatio n activitie s shoul doccu r i n Jun e 2000 . Th e NTCR A i s expecte dt o b e complete db y Decembe r 2001 .ACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E

8 . Basi s fo r

Ceilin g Increas e Th e initia l $9. 7 millio n dollar estimat e fo r

th e NTCR A that

wa s presente di n th e Engineerin g Evaluatio n an dCos t Analysi s (EE/CA ) an dJul y 199 9 Actio n Memorandu m wa s base dupo n th e informatio n know n a t th e tim e an dusin g EP A an dU S Arm y Cor p cos t estimate s fo r

th e wor k t o b e performed . Thi s ceilin g increas e i s base dupo n an numbe r o f factors : (1 ) an additional 10,000 cubi c yard s o f materia l are estimate dt o requir e excavatio n an d treatmen t wit h an anticipate dcos t

o f $1. 8 million . Thi s increas e i s du e t o th e detectio n o f additiona l contaminatio n abov e cleanu p level s beyon dth e railroa dbridg e a s wel l a s an increas e i n th e estimate dvolum e withi n th e origina l area s o f contamination . Th e complexity o f

th e excavatio n ha s als o increase da s th e dept h o f contaminatio n i n certai n area s approache d4 0 feet . Increase dpre-desig n cost s are du e t o an extensiv e borin g progra mto ma p th e contaminatio n wit

h a n anticipate dadditiona

l cos t o f $ 1 million . A comprehensiv e soil borin g progra mwa s implemente di n fal l 199 9 t o delineat e th e area s abov e cleanup levels . Thi s dat awa s the n evaluate dan dincorporate dinto adatabas e tha t wa s usedto confirmtha

t n o additiona

l contaminant s o f

concer n wer e presen t i n th e excavatio n areas . (2 ) pre-treatment

o f th e soil to reduc e wate r

conten t an dvolatil e emission s ar e estimate d to cos t $0. 8 million . Muc h o f

th e contaminate dsoil i s belo w th e wate r table . Also , DNAPL i s presen t

i n alarg e are awithi n on e o f th e excavatio n areas . T o reduc e th e potentia l fo r

DNAP L mobilizatio n durin g excavatio n an dt o preven t th e creatio n o f

an ambien t ai r hazard , aDNAP L recover y an dvapo r

reductio n pre-treatmen t

progra mwil l b e implemented . Availabl e DNAP L wil l b e remove dfro mth e soi l usin g pumps . Th e water level i n th e soil wil l b e lowere dan davapo r extractio n syste mwil l b e employe dto remov e th e volatil e fractio n fro mth e contaminate dsoil . (3 ) a$1. 2 millio n dolla r

cos t t o pilo t tes t a n in-sit u treatmen t

technolog y a s part

o f th e desig n t o determin e i f

ful l scal e implementatio n o f thi s technolog y shoul db e propose dt o th e public . Ther e i s a n are awher e th e contaminatio n i s locate di n anarro w zon e tha t i s beneat h 25

- 3 5 fee t

o f clea n soil . Th e cos t

t o remov e th e clea n soi l ha s cause dEP A t o re evaluat e th e bes t

cleanu p approac h fo r

thes e soils . A pilo t

tes t fo r in-sit u treatmen t

woul d us e eithe r afento n lik e proces s o r

apotassiu mpermanganate . A n Actio n Memorandu m an dpubli c commen t

perio dwoul db e require dprio r t o ful l scal e implementatio n o f th e in-sit u treatment . Se e tabl e 1 fo r alin e ite mcompariso n o f th e EE/ C A an dcurren t

desig n cos t estimates .ACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E (4 ) Re-locatio n o f

abuildin g pursuan t

t o th e National Histori c Preservatio n Ac t (NHPA) . On e structur e that

i s locate dwithi n th e are ao f excavatio n ha s bee n determine dt o b e eligibl e fo r

th e National Register

o f Histori c Places . A s require db y th e NHPA , EP A mus t minimiz e th e advers e impac t o n ahistori c property . T o accomplis h this , EP A wil l re-locate thi s structure durin g excavation . Th e owne r o f th e structure wil l ow n th e lan d upo n whic h th e structur e wil l b e placed . Thi s wil l allo w th e structur e t o remai n a t thi s locatio n an dreduc e th e cost s to EP A b y no t requirin g asecondre-location . (5 ) Cost s hav e increas e i n anumbe r o f othe r items : (1 ) th e highway bridg e wa s originall y estimate dat

$237,00 0 an di s no w estimate dat $550,000 ; (2 ) th e roa ddetou r estimat e ha s increase dfro m$250,00 0 to $400,000 ; an d(3 ) th e re-locatio n o f th e histori c buildin g ha s increase dfro m$50,00 0 t o $300,000 . Thes e ne w estimate s ar e base dupo n draf t fina l desig n package s an dpreliminary contracto r estimate s an drepresent s a n additiona

l $713,00 0 i n cost . I n addition , th e complexit y o f th e desig n wil l resul t

i n a$0. 5 millio n increas e i n desig n costs . The desig n wil l require the integratio n o f multipl e state , local , an d federal agencie s t o resolv e issue s regardin g traffi c flow , utilities , buildin g demolition , rive r re-locatio n an d restoration , an d air

quality . Th e result

ha s been amuc h longe

r an d more detaile d desig n than anticipated , an d Whil e th e cost s hav e increased , al l o f th e activitie s are consistent wit h th e origina

l scop e o f th e NTCRA . Th e additiona l volume i s basedupo n abette r understandin g o f

th e contaminan t

distribution . Th e additional cost s fo r th e bridge , road , an drelocatio n are basedupo n th e more specifi c estimat e tha t ca n b e prepare da

t th e draf t fina l desig n stage . I n addition , th e complexity o f thi s projec t

ha s necessitate dasignifican t increas e i n th e pre-desig n an d desig n activitie s require dto assur e tha t th e NTCR A wil l b e implemente d i n amanne r

that doe s no t creat e unacceptabl e impact s t o ai r quality , traffi c flow , o r

utility services .

### ACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E
NTCR A COS T TABL E Tas k Descriptio n Pre-Desig n Investigation s Estimate d Cost $260,54 1 Curren

t Cost $1,338,73 0 Differenc e

$1,078,18 9 Design/Wor

k Plan s Buildin g Demolitio n Sit e Preparatio n Soi l Excavatio n Are a1 Are a2 Are a3 Are a4 Are a5 River Diversio n Roa dDetou r $115,20 0 $3,828,00 0 $80,20 0 $790,571 * N o Cos t $168,19 8 N o Cos t $325,90 0 $37,80 0 Bridg e J $237,200 Buildin g Relocation (Oddfellows ) | $50,00 0 L

### $517,88 0 $3,635,60 0 $150,00 0 $1,250,00 0 $120,00 0 $110,00 0 $476,050* * $500,00 0 $325,90 0 $400,000 $550,000 $325,00 0 $402,68 0 ($192,400 ) $69,800 $459,57 1 $120,00 0 $110,00 0 $307,85 2 500,00 0 0 

### 362,20 0 312,80 0 | 275,000 On-Sit e Soil Treatment Soil Screening/Washing Pilo t Scal e Ful l Scale $55,700 $84,600 $728,73 0 $55,700

$84,60 0 $1,000,00 0 0 0 

### 271,27 0 Backfil l an dRestoratio n $771,55 8 | $771,558 1 0 

### Soi l Pre-Treatment DNAP L Recovery Multi-Phas e Extractio n N o Cos t N o Cos t $300,00 0

$500,00 0 $300,00 0

$500,00 0 IIn-Sit u Treatmen t N o Cos t | $1,200,000 | $1,200,00 0 Other Cost s (PM , Con . S&A , ED C ontmgenc y (approx . 5% ) TOTAL : $9,700,00 0 $14,611,01 8 $4,911,01 8 *Not e tha t thi s cos t include s Are a2 , whic h wa s originall y though t t o b e part o f Are a1 . **Not e tha t

thi s cos t include s remova l o f

severa l chemica l UST' s associate dwit h th e mil l tha t wer e originall y coste dint o th e buildin g dem o tas k an drepresen t

roughl y $150,00 0 o f

th e differenc e betwee n th e tw o costs .ACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E

III . THREAT S T O PUBLI C HEALT H O RWELFAR E O RTH E ENVIRONMENT . AN D STATUTORY AN D REGULATOR Y AUTHORITIE S Section 300.415(b)(2 ) o f

th e National Contingenc y Plan (NCP ) list s anumbe r o f factor s fo r

EP A t o conside r

i n determinin g whethe r

aremova l actio n i s appropriate , including : (i ) Actual o r

potentia l exposur e t o nearb y huma n populations , animals , o r th e foo d chai n fro mhazardou s substance s o r pollutant s o r

contaminants ; (ii ) Actua l o r potential contaminatio n o f drinkin g water

supplie s o r

sensitiv e ecosystems ; (iii ) Hazardou s substance s o r pollutant s o r

contaminant s i n drums , barrels , tanks , o r othe r bul k storag e containers , that

may pos e athreat

o f release ; (iv ) Hig h level s o f

hazardou s substance s o r

pollutant s o r

contaminant s i n soil s largel y a t o r nea r th e surface , that

ma y migrate ; (v ) Weather

condition s tha

t ma y caus e hazardou s substance s o r pollutant s o r contaminant s to migrate o r b e released ; (vi ) Threa t o f fir e or explosion ; (vii ) Th e availability o f

other appropriate federa l o r

stat e respons e mechanism s t o respon dt o th e release ; an d (viii ) Othe

r situation s o r

factor s that

ma y pos e threat s t o publi c healt h o r welfar e o f th e Unite dState s o r

th e environment . Thi s Actio n Memorandu mi s base dupo n th e same factor s a s th e Jul y 22 , 199 9 Actio n Memorandum . Th e pre-desig n investigation s hav e confirme dtha t substantia l concentration s o f chlorobenzene s presen t

i n th e soi l an dgroundwate r at th e Site . Thi s contaminatio n i s havin g an impac t o n th e ecologica l communit y an dthreaten s loca l wate r supplies ^ACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E

IV . ENDANGERMEN T DETERMINATIO N Actua l o r threatene drelease s o f

hazardou s substances , pollutants , o r contaminants , fro mthi s Site , i f no t addresse db y implementin g th e respons e actio n selecte di n thi s Actio n Memorandum , ma y presen t an imminen t

an dsubstantia

l endangermen t

t o publi c health , o r

welfare , o r

th e environment . V . EXEMPTIO N FRO M STATUTOR Y LIMIT S Thi s ceilin g increas e wil l requir e additiona l fundin g abov e th e statutory ceilin g o f $ 2 millio n dollar s an dmay requir e mor e tha n 1 year t o implement . A s documente di n th e Jul y 22 , 199 9 Actio n Memorandum , thi s NTCRA wil l require fundin g abov e th e statutor y ceilin g o f

$ 2 millio n dollar s an dwil l requir e mor e than 1 year t o implement . Th e Jul y 22 , 199 9 Actio n Memorandu mprojecte dcost s o f $9. 7 millio n an datim e fram e o f 18-24 month s t o complete . Th e revise dceilin g fo r

th e NTCR A wil l b e $1 5 millio n wit h aprojecte dtime frame o f 2 4 -3 0 month s to complete . Th e sam e basi s fo r

th e statutor

y requirement s apply to thi s Actio n Memorandum . Thi s Actio n Memorandu mre-affirm s th e findin g that a"consistency " exemptio n i s appropriate i n order

t o implemen t

th e NTCR A propose di n thi s Actio n Memorandum . The proposed respons e actio n describe d i n the Jul y 22 , 199 9 Actio n Memorandu man d thi s Actio n Memorandum , are otherwis e appropriate an dconsisten t with th e remedial actio n t o b e taken . Th e NTCR A include di n thi s Actio n Memorandu mwil l remov e th e sourc e o f contaminatio n to th e bedroc k aquife r an dth e Eas t

Branc h o f

th e Sebasticoo

k River . Excavatio n an don-sit e treatmen t

i s arespons e actio n tha

t woul db e consistent

wit h th e typ e o f

action s tha

t woul db e considere da s part o f th e expecte dremedia l respons e an dd o no t preclud e an y futur e remedia l respons e that

may b e necessary . Th e implementatio n o f

th e NTCR A i s necessary t o preven t th e furthe r

migratio n o f

th e contaminatio n i n th e soils . Authorizatio n is , therefore , hereb y requeste dfo r a"consistency " exemptio n t o excee dth e statutory limit s o f $ 2 millio n an d1 year

o n remova l action s i n orde r t o implemen t

th e NTCR A a s describe di n thi s Actio n Memorandum .ACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E

VI . PROPOSE D ACTION S AN D ESTIMATE D COST S Th e followin g remova l actio n objective s hav e bee n develope dfo r th e Site : * Prevent , t o th e exten t practicable , direc t

contac t with an dingestio n o f

surfac e an d subsurfac e soil s tha t

represen t a n unacceptabl e healt h risk ; * Prevent , t o th e exten t practicable , th e migratio n o f chlorinate dbenzene s (an d othe r contaminants ) i n soil s t o th e groundwate r an dsurfac e water ; an d * Prevent , t o th e exten t practicable , th e releas e o f contaminatio n believe dt o b e withi n th e buildin g t o th e environmen t throug h floodin g an dfurthe r degradatio n o f th e structur e fro mfire . T o meet th e removal actio n objectives , EP A selecte di n th e Jul y 22 , 199 9 Actio n Memorandum , aNTCR A t o remov e th e sourc e o f th e soi l an dgroundwate r contamination . Thi s alternativ e wa s referre dt o a s Alternativ e 2 i n th e EE/CA . Th e scop e o f th e NTCR A ha s no t

significantl y change dsinc e th e Jul y 22 , 199 9 Actio n Memorandum. . 1 . Proposed Actio n Descriptio n (See Jul y 22 , 1999 Actio n Memorandum) Th e action s propose di n th e Jul y 22 , 199 9 Actio n Memorandu mremai n th e same . However , desig n activitie s conducte dsinc e Jul y 22 , 199 9 hav e clarifie dsom e o f th e detail s o f

th e action s previousl y proposed :

(1 ) Excavatio n exten t

an dvolume : Th e excavatio n o f contaminate dsoil s i s likel y t o exten dt o th e forme r

Moosehea dMil l complex . Pre-desig n activitie s hav e identifie dadditiona l contaminate dabov e cleanu p level s extendin g a t leas t t o th e forme r Moosehea dMill . (2 ) Pretreatmen t

o f soils : Pre-excavatio n activitie s i n th e soi l wil l includ e DNAP L recovery , de-watering , an dvapo r recover y t o decreas e ai r

emission s durin g excavation . Wate r

collecte da s part

o f th e NTCR A wil l b e treate dan ddischarge d t o th e Eas t

Branc h o f

th e Sebasticoo k

River . (3)'In-sit u Pilot : A ful l scal e pilo t o f in-sit u treatmen t

technologie s wil l b e implemente dt o determin e i f in-situ technologie s ar e capabl e o f treatin g th e deep contaminate dsoil s t o th e cleanu p levels .ACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E (4 ) Additiona l pre-desig n work wa s require dt o evaluate th e Nationa l Histori c Preservatio n Ac t

requirement s regardin g th e Od dFellow s building . A structure determine dt o b e eligibl e fo r listin g o n th e Nationa l Registe r o f Histori c Places . Also , additiona l desig n wor k regardin g ai r

emission s durin g excavation , wate r treatment , DNAP L i n th e subsurface , an dtreatmen t option s fo r

dee p soi l contaminatio n wer e necessar y t o complet e th e desig n o f th e NTCRA . (5 ) Surfac e Water

Management : Th e surfac e wate r o f th e Eas t Branc h o f

th e Sebasticoo k

Rive r wil l b e manage db y re-locatin g th e rive r t o ane w permanen t location . Thi s decisio n wa s determine dto b e th e mos t cos t effectiv e approach . EP A wil l leav e th e re-locatio n i n plac e pursuan t t o th e restoratio n request s o f th e anticipate d landowner s o f th e parcel s containin g bot h th e curren t

an dfutur e location s o f

th e rive r (both ar e governmental entities , Tow n o f Corinn aan dState o f Maine) . Th e Mil l Pon dwil l ceas e t o exis t a s aresul t

o f desig n requiremen t regardin g floodplai n elevation s an drestoratio n o f th e expose dsection s o f

Mil l Pon dwil l als o b e par

t o f th e NTCRA . (6 ) Traffi c Management : Th e final locatio n o f th e traffi c detou r

that wil l re-rout e traffi c t o allo w fo r

th e excavatio n o f

Mai n Street

ha s bee n establishe dpursuan t t o discussion s betwee n EPA , State o f Maine , an dth e loca

l community . EP A wil l instal l th e detou r

an dafte r completion , th e M E DO T wil l conver t th e detou r

into a permanen t re-alignmen t

o f th e highway pursuan t

t o th e restoratio n request s o f th e owner s o f th e parcel s containin g bot h th e curren t

an dfutur e location s o f

Mai n Street . Th e State o f

Main e ha s requested , an dEP A agrees , that th e replacement o f th e Mai n Stree

t bridg e wil l occur

alon g th e detou

r an dne w roadalignment . 2 . Contributio n t o Remedia l Performanc e Th e NTCR A propose di n thi s documen t i n combinatio n wit h th e Jul y 22 , 199 9 Actio n Memorandu mi s expecte dt o contribut e significantl y t o th e long-ter mremedia l action . Th e remedia l goa l fo r

thi s Sit e i s t o protec t

publi c healt h an dth e environment . Mor e specifically , th e remedia l response wil l see k t o restor e th e Sit e t o aconditio n tha t wil l allo w fo r futur e Sit e us e an dminimiz e an y lon g ter mthreat s t o th e Eas t Branc h o f

th e Sebasticoo k

Rive r an dth e associate decosystem s an dt o protec t privat e wate r

supplies . Th e remova l o f

th e sourc e o f

th e contaminatio n i s entirel y consisten t wit h al l potentia l futur e remedia l responses . Th e RI/F S i s expecte dt o identif y an y furthe r

cleanu p action s necessary a t th e Site . Long

ter mgroundwate r

restoration , downstrea msedimen t contamination , an dth e forme r dum p fo r th e Eastlan dWoole n Mil l ar e al l issue s tha t wil l b e addresse db y th e RI/FS . 1 0ACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E

B . Estimate d Cost

s Extramura l Cost s Regiona l Allowanc e Cost s $ 15,000,00 0 (Mone y fro mnationa l cleanu p fun dwith contingency ) Othe r extramura l cost s CLP $80,00 0 Stat e o f Main e Cooperativ e Agreemen t $20,00 0 Sub-Tota l Extramural Cost s $ 15,100,00 0

Tota l Extramural $ 15,100,00 0 Intramura l Cos t Intramura l Direc t

$50,00 0 Intramura l Indirec t

$100,00 0 Total Intramura l $ 150,00 0 Total Estimate dRemova l Ceilin g $ 15,400,00 0 Origina l Remova l Projecte dCeilin g base dupo n Jul y 22 , 199 9 Actio n Memorandu m$9,700,00 0 Additiona l Ceilin g Increas e requested : $5,700,00 0 VII . EXPECTE D CHANG E I N TH E SITUATIO N SHOUL D ACTIO N B E DELAYE D O RNO T TAKE N I f th e NTCR A i s no t

implemented , th e contaminant s wil l continu e t o leac h fro mth e soil s int o th e groundwate r

furthe r contributin g t o th e groundwate r contaminatio n an dcausin g impact s t o th e Eas t Branc h o f

th e Sebasticoo k

River . Som e o f

th e loca l wate r

supplie s tha t

ar e no t o n th e 1 1ACTIO N MEMORANDU M FO RTH E EASTLAN D WOOLE N MIL L SIT E

water suppl y lin e hav e concentration s o f chlorobenzene s that

are increasing . Failure to implement

th e NTCRA mean s tha

t th e sourc e o f

th e groundwater

contaminatio n ha s no t beencontrolled . X . RECOMMENDATIO N Thi s decisio n document

represent s aceilin g increas e an d re-affirmatio n o f th e statutor

y basi s an dconsistenc y exemptio n fo r th e selecte dremoval actio n fo r th e Eastlan d Woole n Mil l Superfun dSite , i n Corinna , Penobsco t County , Maine , develope di n accordanc e with CERCL A a s amended , an di s no t

inconsisten t

wit h th e NCP . Thi s decisio n i s base dupo n th e Administrativ e Recordfo r th e Site . Condition s at

th e Site continu e t o mee t th e NC P criteri afo r

aremova l actio n a s specifie dat 4 0 C.F.R . § 300.415(b)(2 ) an dth e CERCL A sectio n 104(c ) consistenc y exemption . I recommen d you r approva l o f

th e propose dprojec t

ceilin g increas e o f

$5,700,000 . Th e tota l projec t ceilin g fo r th e NTCRA , i f

approved , wil l b e $15,400,000 . I als o recommen dan dreques t you r approva l o f a"consistency " exemptio n t o th e statutor y limit s o f $ 2 millio n an don e year

o n remova l actions . Approv e Disapprov e

Patrici aL . Meaney , Directo r Offic e o f Sit e Remediatio n an dRestoratio n

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