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C middot Emiddot Sltgt middot UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
wAsHINGTON DC 10410 bull 1
-~ JUL 11983
01CIO 10110 WAaTI AND IMiflOINCV IIIIPONN
808JBCT1 Record of Deciaion for tM a-Solve lite North Dartaouth MaaaacbuHtta
nt0111 Willi- bullmiddot aectn Jr Director OfUca of -rgancy and -dial r-bullJionaeshy
101 tH 11 -middotmiddot Acting Aaoiotant Adainhtrator OfUca of SOlid Waata and -rgancy aaponH
I - raqueatlng your approval of tha aalactlon of tha coatshyaffactha bull-dial action for tha a-lolva aita in llortb~r-tb Jlaaaacbuaetta Tbe rbull~nded redial action wbicb ia the ttanaportation and dlapoaal off-ait of haaardoua aubatancea and capping tha alta vaa daaclibadmiddot to yqu by Jobn -baa on JIIIM 24 ltU Tba propoHd reJldY affactoaly aitlgataa and ainiaioaa d-ga to and providaa adaquata protection of public haaltb vel(are and the bullnbullloonaent middot
c~ndatlon of thla actlon ia endoraed and aupported by the JteQional Office the ec-onwealth of M1aaachuaetta DepartMnt of Bnvlro-ntal (luality inglnaaring tba Town of Dartaoutb and by tba aajorlty of the reaidenta of Ortaoutb who attended public etlnga to diacuaa all available r dial optionbull on June 1 1913 and again Jllna bullbull un
middot~ccoai~b~~fir~a u-~~~n~fdtwhich were conaldered in the aelection of the coat-effective reaedial action for ~middot ltll-lolbullbull alte
At tachMnta
--~~
--
c c UNITED STATES ENVIRONMENTAL HOTECTION AGENCY
WASHINCITON DC ZOAIO
OfCIOP 80LID W AHD IMifiiOIMCV RIPCea
aaJBCrbull - ol Dociaicn 01 U 111-SDl Site IUth-
lKJII u 11 rri- ActlrQ Aoooclate Gonoral a-1pound1 8olld lloste ord liiiHIIOnCY Ra- Divlaicn (A-Ull
IDI _11Ulla bullbull -middotJr~ OUica ol ---=r ord -1 Jlolpolwe (-) z
n
I- --------shy
I do- r --------shy
I-with---1~ __middot v~-----Doto -+14fc=-3-- shy
~middot
fmiddot bull bull middot=middotmiddot -~ c
bull~
Re-Solve Inc middot lle~~edial Action Briefing Docu~~ent
bull lfbe Re-Solve Inc alte vaa uaed aa a aolvent reclaaation facility for approdbulltely 24 yeara activitieo tenainoting in 1980 The 80at recent owner perfored aobull aite cloaure activitiea aucb bullbull barrel reval building deolition and covered the aite with an unknown vol- of aand before declaring bankruptcy in 1981
bull On June 19 1911 llaaaacbuaetta Dtpartbullnt of lnvironMntal Quality Engineering (Dpound01) requeated Superfund aaaiatance for ~~~
bull In October 1911 -Solw Inc vaa placed on the interia 1iat of 115 pdority vaate oitea propooed for CEaCLA funding middot
bull On July 26 1912 IPA releaaed a llebulldial Action llaoter Plan (lAIII) prepared by the ampOM contractor Cp Dreaaeer bull McKee (Cml) bull
bull On Deco-r 30 1912 lle-8olve Inc wao placed 156 on tbe Propooed Rational Prioritiea Liot of 411 buardouo vaate aiteo Pliabed 1ft- _ ~e ~l lledater _
bull On llay 25 1983 aegiOD I nleaaed ampbe reMdial inveatigation and feaaibility otudy for public review tnd c-nt
bull On June 1 and June 1 1U llegion 11e1d p~lic bulletinga at ~middot DartiiOUtb foVn Ball to receive cG~~Mnt on the propoaed rebullbullSial alternativea be bullbulltlnga were well attended and all procHdinga wre tape recorded for fu~ure conaideratlon
bull On June 14 1913 a _eting of 172 potential reoponaible portieo vaa beld at Borticultural Ball Boaton KA to begin ne4iotiatlona to detemine vbetber or not any reaponaible party vaa willing and able to undertake reMdlal deaign and conatructlon Tbe partiea were given a abort deadline to preaent their propoaala If tbe
propoaala are inad~uate or if the work cannot be undert~ten on a tiMtable equivalent or faater than oura an enforceMnt releaae for deoign and conotruction will be given ~lately
bull The acbedule for work calla for dealgn ty the Corpa of lngineera to be cobullpleted by Auguat 1 1983 and lbullplebullntation of conatruction by November 15 1983 If weather conditione penit conatructlon will be ccgtbullplete by January 15 1983 The otfite feaoibU ity atudy will be completed bi the Pall 1983 and implementation of th recoa110nded opt on by Spring 1914
middot c c middot middot ~ aecHal lllplementation
Alternative Selection a-solve Inc Site
North Dartmouth Maaaachuaatta
On May zs 1983 tho Booton rogionol office of IPA relooood tho Preliain~~ry baolllal Invootigation and Poaoibility Studyfor a-solve Inc Baampardoua Waate ampita Dartaoutb Maaaachuaattabull prepared by the conaultlng fira of Callp Draaaar 6 Me~bullbull IDC Copiaa of the C~port vera diatributad by tha Town a Bazardoua Waata Coordinator to the aaabera of the Board of Baaltb and lelacten Coplaa wra alao placed in the Tovn library Town offfceo and in tho neighboring town of Wootport Io addition a copy of tbe atudy bullbullbull delivered to each of the tvo abutting property ownaro
Pnampl relaaaaa and notlcaa vera placed in the local nenpaper announcing tba availabllity of the atudy and announcing two public Matingamp to be bald on rune 1 ltll and June 1 11131 napectlvaly The purpoaa of the June 1 ltll -bullting vaa to preHnt tho finllingo of tho otudy and to diocuoo tho reaa41al
- - optio~ which have been conaidered middotThe purpon of the June 1 ltiJ etlng vaa to receive input frca the affecte4 ~unity oa tbe re~nded alterutivaa andreceive public input on the
~c~~~tn11r~ai~ t~t~l~U~i~ centonal office for review
PIASIIILITY STUD ALTIIUIATlYIII
The object of the feaaibility atudy vaa to develop aource control r dtal actlona which would reduce andor aliainata the off-alta aigration of contuinantl and al1ainata the axiatlng direct contact hazarda at the alta aaanating fra four unlined lagoona and a foDMr oil apraading area The raaulta of the r dial invaatigation have indicated that contaa1Mnta have aigrate4 off the alta via aurface runoff and ground vatal ~middot con~antrationa bull of contuinanta on-alta are vary l-lgh and aoat notably PCIa are
middot in the tbouaanda of PPII range volatile organ~ca in the hundreda of ppa range and heavy aetala aa bigh a1 6 A plae ia aoving towarda a recreational pond knovn aa cornell Pond vhich
middot draina into a lake dealgnated aa a aecondary water aupply for the City of Pall River In add1tion the aite ia located over an aquifer which aervea aa a recharge area for a portion of the
- Town where a nev aunicipal well ia achaduled to be 1natalled within the year The town ia currently purchaaing water fr011 a neighboring tovn on an lntarla basia and auat develop future
I
c -2shy
-shyauppliea adeqUate to bullbullrvbull t~e - tovnbulla needa
The priaary aourcaa of contampJDi~ation at the alta that muat be addraaaad by ruedial alternatives area
( l) Pour unlined lagoona in the northern portion of the alta 12) A forioer coollng pond area fllled with aand C3) An oil apraading area in the vaatarn portion of tha alta (4) Other contiAinatad aoil araaa ( bullhot apotabull)
be initial liat of raaadial actions conaicSarad includach No action Black topping tha entire alta Kicrobiological treataent ~
middot Excavation of middothazardous aubatancaa and atockpiling ~~ rntainme ntIaolation ~ ampxcavation traataent and ancapaulation onaita noorlxcavation traataent (onoff-alta) and off-alta diapoaal -laquo ccbinationa of the above ltmiddot ~
Tha initial acreaning of altarnativaa focuHd on Zthe geologic mnconclltiona and otMr cbaracteriatica of the aite the type1 and n concentrationbull of conttnanta aDd the ability of the alternativea bull 0
to effectively bullltigate the threat to public health welfare or el the environt The prlaary featurebull of the lite are highly fractured bedroCk a high ground water table and high concentrationa of tcabulla volatile organica and heavy aetala The aite baa beea found to be a continuoua aource of cbebulllcal contaairiatldh to tM middotadjacent vetlanda and aurface hter bodiea PCBa are bullgrating over the aurface of the aoil by pby ical forebullbull aucb aa 1urface runoff and -atherlng
The lnltlal ecreenlng reeulted in rejecting aanr of the ftlt~nativea AI docuaented in the attached Bealth and Riak middot Alaeant then ia a aignificant rtk to public health bullII through direct contact inhalation andor denaal expoaure fro vi~ blown particulatbullbullmiddot middotThe continuoua leaching of contuinanta fro the aite to the environaent threaten potential contbullination of water auppliea Tbe no action alternative waa rejected blcauH of the health babullarda and the availability of feaaible alternativea Part~al action aucb ampI atockpiling or black topping vaa detemined not to be aufficient to prevent continuoua enviroNRental degradatlo bull 8
middot lhe bullixture of waatea in aucb high and toxic concentrationbull de middot the option of bulltcrobtal treatent ineffective WI detenained middot wthat any fora of inaitu containaent or iaolalion would not be in~~~~ b~=b~~auabull of the highly fractured bedrock and
The reaulta of the initial acreenlng idenitfied two alternativebull aa being technically feaaible to aitigate the threat to public health welfare or the environment The two ~e~t~ri =~e~~~t a public meeting on June 1 1983
middot=
middotmiddot middotmiddotI c -3shy
middot 1 Excavation of hazardoua aubatanceaJ treataant on aite
and ancapaulation 2 ~ Excavation trans port and diapoaal off-site of hazar doua
aubatancaa and alta capping
Alternative 1 (excavation treatment on alta and ancapaulation) vaa further deacribe CS aa a vaata atabilizationfixation procaaa in which tha contulnatad aatariala once excavated and aolidUiad are cbically and aachanically atabla Thaaa solid aatariala would than be placed on a two-foot clay linad baaa with a leachate collection ayat and atoraga Any leachate collected would be bulliniaal in voluaa and tranaportad by truck to a traataant facility A four-foot aaparation betwan high groundwater an4 the bottaa
- of tha vaataa would be aaintained and the final alope of the aite once fully encapaulated would be lOt Thia remedial action la ~atiaatecS to have a capital coat of $1854000 a preaentworth 20-year coat of $2270000 and have an annual operation
~~~ aalntenance coat of stasoo
~ middot Alternative 2 (excavation off-aite diapoaal and alte capping) middot middot middot iiiVolvea Hveralmiddot off-aite diapoaal optiona auch aa c incineratioa
middot - middot (of the lAgoon contentamp) r aolicllfication or fixation prior to ahis-ent ~o a diapoaal facilityr or fixation traataent and diopooalmiddot ot on off-oite facility Approdaotely 3100 cubic middot middot jarda of lagoon waate and 3900 cubic yarda of contaainated aoila will need to bo re110vod frca the oite It io onticipota tbot middot S
trucko per day will bo loaded ond bullent fr- tho oito for a poriod of 70 to 90 daya After the contbulllnanta have been reaoved frca the oite clean fill will bo brollh~in tho oite graded and a
~middotrl~~~o~tieio-~r~tJbullomiddot~~~ooo abd an annual operation middot~~ aaintenanc_e coat of fl 000 middot
b a reault of c~enta received at the June 1 public Meting middot middotCDM waa taakad to perfora varioua leachability teata deacribed
inmiddot tbo BPA bullanual - Guide to the DioSTul of Chemically Stabilioed arid SOlidified hate (Septelibir 198 on the aolldihed aiudgeA bull-pia of the waatea waa aolidified by the SOlid Tak (Morrow Georgie) proceaa Tbe taata performed includadc(l) an organic BP TOdcity Scan(2) a PCB IP ntract1 and(]) a modified ~bull extraction for volatile organica The reaulta ahovad that tha bullbulltala and PCB bulla were bound by the proceaa but that the organlea did leach out Aa a reault of theue tbullata the atabllatlon of
the contaainanta on the aite would not be a reliable alternative _ and the aora extenaiue containaett ayatea would ~ neceaaary
In addition and in reaponae to commentamp received at the June 1 183 bulleating a 7th option wae developed that would
middotmiddotprovide bull aore axtenai ve containment ayaua
u
i
I
f
bullII 8
middot middotmiddot c- cmiddot
-middotshyr) The aaauptiona uaad for tha 110ra axtanaiva containment ayataa
option are aa follovaa
bull Double liner ayataa ( aynthatlcclay) bull Leachate collection above each liner bull Clay cap bull Mlnlaua of 10 feat between tha high groundwater and tha botta
of tha waataa middot middot bull Integrated layer of peat between the vaata aatarlal and tha
firat liner to retard tha waata avnt bull No aol141flcatlon of vaataa bull Segregation of aludgaaoil vaata froa the aaaaonal high gr~und
famptar tabla aa follovaa
2 of clay IIA8D
1 of gravel middot-- abull of peat
1 of aaDd middot of undardraln ayatbull1 1
2 bull of clay ayntbetic u r _ bull middot 1 of vnderdrain ayatbull 2 of clayayntbetic liner
10 bull of clean fill middot Bigb grOWidvatec rk) I
The aatlllatad cona for tblo r-r arei U205000 capital jooata U020000 2CI-year prant vcrtb ancl bullbullaooo annual 1 ~ration and tntananca coeu
Tha following tabla la a a-ary of the capital annual I opera~lon and aamplnteraance a~d prceent worth coata for each alternAtlbulle
ALTIUAlIVI middotmiddotmiddot
1 bcabullatlon trea~nt on aite and encapaulatlon 2 ampxcavatlon off-al te middotdlashy
bull pol ancl capping middot 3middot lxcabullation~ 110re
extenalve contaiNMnt
COMMUNITY INVOLVshy
CAPITAL ARNUAL PltiSIIIIT Dill IIORTII
nes4ooo 500 U270000
uosoooo uooo u36oooo
U205000 fiiOOO U020000
Many Queationa were aaked about the effectrvefteaa of aolldlficatlon eapeclally on PCBbull and organic waatea A ampelectaan for the town atated that -only off- a itbull diapoaal would be technically adequate toprotect the underlying aquifer which aerved tha town bulla well (now cloaed) and which will be uaed for a future well alte
---- - c-- - --shy-sshy
-i Be did not believe that the toWn would accept solidification and ~ capping _becauae of the poaaibility that leaching of contaminantbull
could occur in 20 to 30 yeara Be indicated that the town c11d not vlab to rely excluaively on the C011111onwealtha operation and aalntenance becauae in 20 to 30 yeara the political clite middotcould be aignificantly changed Be waa Concerned that any failure of tbe cap or aolidification proceaa would aean an exceaaive burden to the town in years to coae middot middot
Sibullilar concerns vera voiced by aaveral of the residents lgtpresent One abutting property owner stated that abe vaa in 0
favor of On-site encapsulation instead of off-alta disposal 3 because aha did not viah the truck traffic and decontamination z
~procedurebull to potentially dlaflgure her property _ 00
At the aecond public aeetlng fifteen people teatlfled Jgtr -olt
and all bUt one aupported off-al te dlapoaal bullbull the final ruedlal ~ ltmiddotactionmiddot In addition 9 written atatementa were received and 7 aupported off-alte and 2 aupported on alta encapaulatlon without Z aolldlflctlon COplea of the written coenta received are 0bull middot attached and the reglatratlon foraa of the apeakera Tbe public 0
middot ~nta received tended to reiterate four aajor pointas (U that 0
the nature of the alta ltaelf la lllauited for onalte rdyI- -- aO td~goY~~ntetlbea~~~~it~~rr~r vneamp ouppli rCZl tbat oolidiflcatlQn io otill unproven becbnology and in tblo cbull bad bean found not to bind the organlcorUl
that tbere ia a general lack of conftdence in tbe long tem middot
~~l=~lhfbullnd~c=~middot~ir~nad~nance off_-elte diapoaal to another area of tbe country better aulted fo~ aaaardoua wrbulltbull diapoaa~- la tbe 110at reliable deciaion
JtECOIUINDED ACTIO
Sctlon 30068(j) -of the National Contingency Plan (NCP) [47rR 31180 July U ltl3] otatea that the appproprlate extent of redy ahall be deterained by the lead agencybull middotaelection of
the reMdlal alternative which the agency deterair bullbull ia cort shy effective U e the loveat coat alternative that ia technologishy cally feaaible and reliable) and which effectively bullitlgatea and ainibullizea daaage to and providea adequate protection of public health Vlfare or the enviroNMnt Baaed on our evaluation of the coat-t~ffectlveneaa of each of the propoaed alternativeamp the commentbull received froa the public the additional inforaation aupplled by our conaultant in reaponae to the public commentamp received at the flrat bulleating and information received fra the atate we recommend the excAvation tranaport and off-altbull dlapoaal of hazardoua aubatancea and aite capping ampI the aource control remedial _a~tion middot
I I I I
( __
~~
OUr reaaona for thia rec01111endation are that there are phyaical alta characterlatica which lillit true effectiveneaa of aolidification or encapaulation aa the final oneite reiledy TheM llaitationa are a highly fluctuating aeaaonal groundwater table low lying adjacent wetlands and private water walla which drav on the underlying aquifer The reaulta of the aolidification leaching teata ahoved that the organic c011pounda did not bind in the aolidified aaaa With organic concentratione in the hundreda of ppa range middot we believe that encapaulation ia inaiSequate to protect auch a water aenaitlve area The axtanaiva public comaent received in aupport of off-alta dlapoaal for thaae reaaona further juotlfioo tho addltlonll expenditure of fundo for ro100val of 7000 cubic yarda middotof aaterial Alao the additional expenditure prOYidea a auch ore reliable cleanup and eliainatea the potential to further contbulllnate a public water supply
BTATII IIPOT
middotof eat~t~bullui~~~middot~oh0p~~~o=~lbullbullbull Maaaacbu-tta Dlpartent of ampnviroental Quality lnginearino n~nda excavation transport and off-alta dia~al of babullardoua aubetancea middot and alta capping A letter confinling the Statebulla concurrence with thia nc~ndation ia attached
PIIOIOBBD ACTIOII
bull rwqueot your approval of tbbull offolto dlopoool r-y Dur abodule callo for doalgn by tho Co~ of BnglnHro to be COIIplotecl by Auguat 1 1183 wlth conatnactiont-o proceed by Roveaber 15 1913 and coapletion of tbia aource control raMdy by January 1- ltl4 ltu follnwing bulletlonu need to be coapleted to initiate theae activitleas middot middot
middot middot1middot ampn~er into a Superfundmiddot State Contract
2 Develop An InterageneY Agrbullbull-nt with the Corpbull of lngineera for deaign and eo~atructlon aetivitiel
middot middot~
--
c c UNITED STATES ENVIRONMENTAL HOTECTION AGENCY
WASHINCITON DC ZOAIO
OfCIOP 80LID W AHD IMifiiOIMCV RIPCea
aaJBCrbull - ol Dociaicn 01 U 111-SDl Site IUth-
lKJII u 11 rri- ActlrQ Aoooclate Gonoral a-1pound1 8olld lloste ord liiiHIIOnCY Ra- Divlaicn (A-Ull
IDI _11Ulla bullbull -middotJr~ OUica ol ---=r ord -1 Jlolpolwe (-) z
n
I- --------shy
I do- r --------shy
I-with---1~ __middot v~-----Doto -+14fc=-3-- shy
~middot
fmiddot bull bull middot=middotmiddot -~ c
bull~
Re-Solve Inc middot lle~~edial Action Briefing Docu~~ent
bull lfbe Re-Solve Inc alte vaa uaed aa a aolvent reclaaation facility for approdbulltely 24 yeara activitieo tenainoting in 1980 The 80at recent owner perfored aobull aite cloaure activitiea aucb bullbull barrel reval building deolition and covered the aite with an unknown vol- of aand before declaring bankruptcy in 1981
bull On June 19 1911 llaaaacbuaetta Dtpartbullnt of lnvironMntal Quality Engineering (Dpound01) requeated Superfund aaaiatance for ~~~
bull In October 1911 -Solw Inc vaa placed on the interia 1iat of 115 pdority vaate oitea propooed for CEaCLA funding middot
bull On July 26 1912 IPA releaaed a llebulldial Action llaoter Plan (lAIII) prepared by the ampOM contractor Cp Dreaaeer bull McKee (Cml) bull
bull On Deco-r 30 1912 lle-8olve Inc wao placed 156 on tbe Propooed Rational Prioritiea Liot of 411 buardouo vaate aiteo Pliabed 1ft- _ ~e ~l lledater _
bull On llay 25 1983 aegiOD I nleaaed ampbe reMdial inveatigation and feaaibility otudy for public review tnd c-nt
bull On June 1 and June 1 1U llegion 11e1d p~lic bulletinga at ~middot DartiiOUtb foVn Ball to receive cG~~Mnt on the propoaed rebullbullSial alternativea be bullbulltlnga were well attended and all procHdinga wre tape recorded for fu~ure conaideratlon
bull On June 14 1913 a _eting of 172 potential reoponaible portieo vaa beld at Borticultural Ball Boaton KA to begin ne4iotiatlona to detemine vbetber or not any reaponaible party vaa willing and able to undertake reMdlal deaign and conatructlon Tbe partiea were given a abort deadline to preaent their propoaala If tbe
propoaala are inad~uate or if the work cannot be undert~ten on a tiMtable equivalent or faater than oura an enforceMnt releaae for deoign and conotruction will be given ~lately
bull The acbedule for work calla for dealgn ty the Corpa of lngineera to be cobullpleted by Auguat 1 1983 and lbullplebullntation of conatruction by November 15 1983 If weather conditione penit conatructlon will be ccgtbullplete by January 15 1983 The otfite feaoibU ity atudy will be completed bi the Pall 1983 and implementation of th recoa110nded opt on by Spring 1914
middot c c middot middot ~ aecHal lllplementation
Alternative Selection a-solve Inc Site
North Dartmouth Maaaachuaatta
On May zs 1983 tho Booton rogionol office of IPA relooood tho Preliain~~ry baolllal Invootigation and Poaoibility Studyfor a-solve Inc Baampardoua Waate ampita Dartaoutb Maaaachuaattabull prepared by the conaultlng fira of Callp Draaaar 6 Me~bullbull IDC Copiaa of the C~port vera diatributad by tha Town a Bazardoua Waata Coordinator to the aaabera of the Board of Baaltb and lelacten Coplaa wra alao placed in the Tovn library Town offfceo and in tho neighboring town of Wootport Io addition a copy of tbe atudy bullbullbull delivered to each of the tvo abutting property ownaro
Pnampl relaaaaa and notlcaa vera placed in the local nenpaper announcing tba availabllity of the atudy and announcing two public Matingamp to be bald on rune 1 ltll and June 1 11131 napectlvaly The purpoaa of the June 1 ltll -bullting vaa to preHnt tho finllingo of tho otudy and to diocuoo tho reaa41al
- - optio~ which have been conaidered middotThe purpon of the June 1 ltiJ etlng vaa to receive input frca the affecte4 ~unity oa tbe re~nded alterutivaa andreceive public input on the
~c~~~tn11r~ai~ t~t~l~U~i~ centonal office for review
PIASIIILITY STUD ALTIIUIATlYIII
The object of the feaaibility atudy vaa to develop aource control r dtal actlona which would reduce andor aliainata the off-alta aigration of contuinantl and al1ainata the axiatlng direct contact hazarda at the alta aaanating fra four unlined lagoona and a foDMr oil apraading area The raaulta of the r dial invaatigation have indicated that contaa1Mnta have aigrate4 off the alta via aurface runoff and ground vatal ~middot con~antrationa bull of contuinanta on-alta are vary l-lgh and aoat notably PCIa are
middot in the tbouaanda of PPII range volatile organ~ca in the hundreda of ppa range and heavy aetala aa bigh a1 6 A plae ia aoving towarda a recreational pond knovn aa cornell Pond vhich
middot draina into a lake dealgnated aa a aecondary water aupply for the City of Pall River In add1tion the aite ia located over an aquifer which aervea aa a recharge area for a portion of the
- Town where a nev aunicipal well ia achaduled to be 1natalled within the year The town ia currently purchaaing water fr011 a neighboring tovn on an lntarla basia and auat develop future
I
c -2shy
-shyauppliea adeqUate to bullbullrvbull t~e - tovnbulla needa
The priaary aourcaa of contampJDi~ation at the alta that muat be addraaaad by ruedial alternatives area
( l) Pour unlined lagoona in the northern portion of the alta 12) A forioer coollng pond area fllled with aand C3) An oil apraading area in the vaatarn portion of tha alta (4) Other contiAinatad aoil araaa ( bullhot apotabull)
be initial liat of raaadial actions conaicSarad includach No action Black topping tha entire alta Kicrobiological treataent ~
middot Excavation of middothazardous aubatancaa and atockpiling ~~ rntainme ntIaolation ~ ampxcavation traataent and ancapaulation onaita noorlxcavation traataent (onoff-alta) and off-alta diapoaal -laquo ccbinationa of the above ltmiddot ~
Tha initial acreaning of altarnativaa focuHd on Zthe geologic mnconclltiona and otMr cbaracteriatica of the aite the type1 and n concentrationbull of conttnanta aDd the ability of the alternativea bull 0
to effectively bullltigate the threat to public health welfare or el the environt The prlaary featurebull of the lite are highly fractured bedroCk a high ground water table and high concentrationa of tcabulla volatile organica and heavy aetala The aite baa beea found to be a continuoua aource of cbebulllcal contaairiatldh to tM middotadjacent vetlanda and aurface hter bodiea PCBa are bullgrating over the aurface of the aoil by pby ical forebullbull aucb aa 1urface runoff and -atherlng
The lnltlal ecreenlng reeulted in rejecting aanr of the ftlt~nativea AI docuaented in the attached Bealth and Riak middot Alaeant then ia a aignificant rtk to public health bullII through direct contact inhalation andor denaal expoaure fro vi~ blown particulatbullbullmiddot middotThe continuoua leaching of contuinanta fro the aite to the environaent threaten potential contbullination of water auppliea Tbe no action alternative waa rejected blcauH of the health babullarda and the availability of feaaible alternativea Part~al action aucb ampI atockpiling or black topping vaa detemined not to be aufficient to prevent continuoua enviroNRental degradatlo bull 8
middot lhe bullixture of waatea in aucb high and toxic concentrationbull de middot the option of bulltcrobtal treatent ineffective WI detenained middot wthat any fora of inaitu containaent or iaolalion would not be in~~~~ b~=b~~auabull of the highly fractured bedrock and
The reaulta of the initial acreenlng idenitfied two alternativebull aa being technically feaaible to aitigate the threat to public health welfare or the environment The two ~e~t~ri =~e~~~t a public meeting on June 1 1983
middot=
middotmiddot middotmiddotI c -3shy
middot 1 Excavation of hazardoua aubatanceaJ treataant on aite
and ancapaulation 2 ~ Excavation trans port and diapoaal off-site of hazar doua
aubatancaa and alta capping
Alternative 1 (excavation treatment on alta and ancapaulation) vaa further deacribe CS aa a vaata atabilizationfixation procaaa in which tha contulnatad aatariala once excavated and aolidUiad are cbically and aachanically atabla Thaaa solid aatariala would than be placed on a two-foot clay linad baaa with a leachate collection ayat and atoraga Any leachate collected would be bulliniaal in voluaa and tranaportad by truck to a traataant facility A four-foot aaparation betwan high groundwater an4 the bottaa
- of tha vaataa would be aaintained and the final alope of the aite once fully encapaulated would be lOt Thia remedial action la ~atiaatecS to have a capital coat of $1854000 a preaentworth 20-year coat of $2270000 and have an annual operation
~~~ aalntenance coat of stasoo
~ middot Alternative 2 (excavation off-aite diapoaal and alte capping) middot middot middot iiiVolvea Hveralmiddot off-aite diapoaal optiona auch aa c incineratioa
middot - middot (of the lAgoon contentamp) r aolicllfication or fixation prior to ahis-ent ~o a diapoaal facilityr or fixation traataent and diopooalmiddot ot on off-oite facility Approdaotely 3100 cubic middot middot jarda of lagoon waate and 3900 cubic yarda of contaainated aoila will need to bo re110vod frca the oite It io onticipota tbot middot S
trucko per day will bo loaded ond bullent fr- tho oito for a poriod of 70 to 90 daya After the contbulllnanta have been reaoved frca the oite clean fill will bo brollh~in tho oite graded and a
~middotrl~~~o~tieio-~r~tJbullomiddot~~~ooo abd an annual operation middot~~ aaintenanc_e coat of fl 000 middot
b a reault of c~enta received at the June 1 public Meting middot middotCDM waa taakad to perfora varioua leachability teata deacribed
inmiddot tbo BPA bullanual - Guide to the DioSTul of Chemically Stabilioed arid SOlidified hate (Septelibir 198 on the aolldihed aiudgeA bull-pia of the waatea waa aolidified by the SOlid Tak (Morrow Georgie) proceaa Tbe taata performed includadc(l) an organic BP TOdcity Scan(2) a PCB IP ntract1 and(]) a modified ~bull extraction for volatile organica The reaulta ahovad that tha bullbulltala and PCB bulla were bound by the proceaa but that the organlea did leach out Aa a reault of theue tbullata the atabllatlon of
the contaainanta on the aite would not be a reliable alternative _ and the aora extenaiue containaett ayatea would ~ neceaaary
In addition and in reaponae to commentamp received at the June 1 183 bulleating a 7th option wae developed that would
middotmiddotprovide bull aore axtenai ve containment ayaua
u
i
I
f
bullII 8
middot middotmiddot c- cmiddot
-middotshyr) The aaauptiona uaad for tha 110ra axtanaiva containment ayataa
option are aa follovaa
bull Double liner ayataa ( aynthatlcclay) bull Leachate collection above each liner bull Clay cap bull Mlnlaua of 10 feat between tha high groundwater and tha botta
of tha waataa middot middot bull Integrated layer of peat between the vaata aatarlal and tha
firat liner to retard tha waata avnt bull No aol141flcatlon of vaataa bull Segregation of aludgaaoil vaata froa the aaaaonal high gr~und
famptar tabla aa follovaa
2 of clay IIA8D
1 of gravel middot-- abull of peat
1 of aaDd middot of undardraln ayatbull1 1
2 bull of clay ayntbetic u r _ bull middot 1 of vnderdrain ayatbull 2 of clayayntbetic liner
10 bull of clean fill middot Bigb grOWidvatec rk) I
The aatlllatad cona for tblo r-r arei U205000 capital jooata U020000 2CI-year prant vcrtb ancl bullbullaooo annual 1 ~ration and tntananca coeu
Tha following tabla la a a-ary of the capital annual I opera~lon and aamplnteraance a~d prceent worth coata for each alternAtlbulle
ALTIUAlIVI middotmiddotmiddot
1 bcabullatlon trea~nt on aite and encapaulatlon 2 ampxcavatlon off-al te middotdlashy
bull pol ancl capping middot 3middot lxcabullation~ 110re
extenalve contaiNMnt
COMMUNITY INVOLVshy
CAPITAL ARNUAL PltiSIIIIT Dill IIORTII
nes4ooo 500 U270000
uosoooo uooo u36oooo
U205000 fiiOOO U020000
Many Queationa were aaked about the effectrvefteaa of aolldlficatlon eapeclally on PCBbull and organic waatea A ampelectaan for the town atated that -only off- a itbull diapoaal would be technically adequate toprotect the underlying aquifer which aerved tha town bulla well (now cloaed) and which will be uaed for a future well alte
---- - c-- - --shy-sshy
-i Be did not believe that the toWn would accept solidification and ~ capping _becauae of the poaaibility that leaching of contaminantbull
could occur in 20 to 30 yeara Be indicated that the town c11d not vlab to rely excluaively on the C011111onwealtha operation and aalntenance becauae in 20 to 30 yeara the political clite middotcould be aignificantly changed Be waa Concerned that any failure of tbe cap or aolidification proceaa would aean an exceaaive burden to the town in years to coae middot middot
Sibullilar concerns vera voiced by aaveral of the residents lgtpresent One abutting property owner stated that abe vaa in 0
favor of On-site encapsulation instead of off-alta disposal 3 because aha did not viah the truck traffic and decontamination z
~procedurebull to potentially dlaflgure her property _ 00
At the aecond public aeetlng fifteen people teatlfled Jgtr -olt
and all bUt one aupported off-al te dlapoaal bullbull the final ruedlal ~ ltmiddotactionmiddot In addition 9 written atatementa were received and 7 aupported off-alte and 2 aupported on alta encapaulatlon without Z aolldlflctlon COplea of the written coenta received are 0bull middot attached and the reglatratlon foraa of the apeakera Tbe public 0
middot ~nta received tended to reiterate four aajor pointas (U that 0
the nature of the alta ltaelf la lllauited for onalte rdyI- -- aO td~goY~~ntetlbea~~~~it~~rr~r vneamp ouppli rCZl tbat oolidiflcatlQn io otill unproven becbnology and in tblo cbull bad bean found not to bind the organlcorUl
that tbere ia a general lack of conftdence in tbe long tem middot
~~l=~lhfbullnd~c=~middot~ir~nad~nance off_-elte diapoaal to another area of tbe country better aulted fo~ aaaardoua wrbulltbull diapoaa~- la tbe 110at reliable deciaion
JtECOIUINDED ACTIO
Sctlon 30068(j) -of the National Contingency Plan (NCP) [47rR 31180 July U ltl3] otatea that the appproprlate extent of redy ahall be deterained by the lead agencybull middotaelection of
the reMdlal alternative which the agency deterair bullbull ia cort shy effective U e the loveat coat alternative that ia technologishy cally feaaible and reliable) and which effectively bullitlgatea and ainibullizea daaage to and providea adequate protection of public health Vlfare or the enviroNMnt Baaed on our evaluation of the coat-t~ffectlveneaa of each of the propoaed alternativeamp the commentbull received froa the public the additional inforaation aupplled by our conaultant in reaponae to the public commentamp received at the flrat bulleating and information received fra the atate we recommend the excAvation tranaport and off-altbull dlapoaal of hazardoua aubatancea and aite capping ampI the aource control remedial _a~tion middot
I I I I
( __
~~
OUr reaaona for thia rec01111endation are that there are phyaical alta characterlatica which lillit true effectiveneaa of aolidification or encapaulation aa the final oneite reiledy TheM llaitationa are a highly fluctuating aeaaonal groundwater table low lying adjacent wetlands and private water walla which drav on the underlying aquifer The reaulta of the aolidification leaching teata ahoved that the organic c011pounda did not bind in the aolidified aaaa With organic concentratione in the hundreda of ppa range middot we believe that encapaulation ia inaiSequate to protect auch a water aenaitlve area The axtanaiva public comaent received in aupport of off-alta dlapoaal for thaae reaaona further juotlfioo tho addltlonll expenditure of fundo for ro100val of 7000 cubic yarda middotof aaterial Alao the additional expenditure prOYidea a auch ore reliable cleanup and eliainatea the potential to further contbulllnate a public water supply
BTATII IIPOT
middotof eat~t~bullui~~~middot~oh0p~~~o=~lbullbullbull Maaaacbu-tta Dlpartent of ampnviroental Quality lnginearino n~nda excavation transport and off-alta dia~al of babullardoua aubetancea middot and alta capping A letter confinling the Statebulla concurrence with thia nc~ndation ia attached
PIIOIOBBD ACTIOII
bull rwqueot your approval of tbbull offolto dlopoool r-y Dur abodule callo for doalgn by tho Co~ of BnglnHro to be COIIplotecl by Auguat 1 1183 wlth conatnactiont-o proceed by Roveaber 15 1913 and coapletion of tbia aource control raMdy by January 1- ltl4 ltu follnwing bulletlonu need to be coapleted to initiate theae activitleas middot middot
middot middot1middot ampn~er into a Superfundmiddot State Contract
2 Develop An InterageneY Agrbullbull-nt with the Corpbull of lngineera for deaign and eo~atructlon aetivitiel
middot middot~
fmiddot bull bull middot=middotmiddot -~ c
bull~
Re-Solve Inc middot lle~~edial Action Briefing Docu~~ent
bull lfbe Re-Solve Inc alte vaa uaed aa a aolvent reclaaation facility for approdbulltely 24 yeara activitieo tenainoting in 1980 The 80at recent owner perfored aobull aite cloaure activitiea aucb bullbull barrel reval building deolition and covered the aite with an unknown vol- of aand before declaring bankruptcy in 1981
bull On June 19 1911 llaaaacbuaetta Dtpartbullnt of lnvironMntal Quality Engineering (Dpound01) requeated Superfund aaaiatance for ~~~
bull In October 1911 -Solw Inc vaa placed on the interia 1iat of 115 pdority vaate oitea propooed for CEaCLA funding middot
bull On July 26 1912 IPA releaaed a llebulldial Action llaoter Plan (lAIII) prepared by the ampOM contractor Cp Dreaaeer bull McKee (Cml) bull
bull On Deco-r 30 1912 lle-8olve Inc wao placed 156 on tbe Propooed Rational Prioritiea Liot of 411 buardouo vaate aiteo Pliabed 1ft- _ ~e ~l lledater _
bull On llay 25 1983 aegiOD I nleaaed ampbe reMdial inveatigation and feaaibility otudy for public review tnd c-nt
bull On June 1 and June 1 1U llegion 11e1d p~lic bulletinga at ~middot DartiiOUtb foVn Ball to receive cG~~Mnt on the propoaed rebullbullSial alternativea be bullbulltlnga were well attended and all procHdinga wre tape recorded for fu~ure conaideratlon
bull On June 14 1913 a _eting of 172 potential reoponaible portieo vaa beld at Borticultural Ball Boaton KA to begin ne4iotiatlona to detemine vbetber or not any reaponaible party vaa willing and able to undertake reMdlal deaign and conatructlon Tbe partiea were given a abort deadline to preaent their propoaala If tbe
propoaala are inad~uate or if the work cannot be undert~ten on a tiMtable equivalent or faater than oura an enforceMnt releaae for deoign and conotruction will be given ~lately
bull The acbedule for work calla for dealgn ty the Corpa of lngineera to be cobullpleted by Auguat 1 1983 and lbullplebullntation of conatruction by November 15 1983 If weather conditione penit conatructlon will be ccgtbullplete by January 15 1983 The otfite feaoibU ity atudy will be completed bi the Pall 1983 and implementation of th recoa110nded opt on by Spring 1914
middot c c middot middot ~ aecHal lllplementation
Alternative Selection a-solve Inc Site
North Dartmouth Maaaachuaatta
On May zs 1983 tho Booton rogionol office of IPA relooood tho Preliain~~ry baolllal Invootigation and Poaoibility Studyfor a-solve Inc Baampardoua Waate ampita Dartaoutb Maaaachuaattabull prepared by the conaultlng fira of Callp Draaaar 6 Me~bullbull IDC Copiaa of the C~port vera diatributad by tha Town a Bazardoua Waata Coordinator to the aaabera of the Board of Baaltb and lelacten Coplaa wra alao placed in the Tovn library Town offfceo and in tho neighboring town of Wootport Io addition a copy of tbe atudy bullbullbull delivered to each of the tvo abutting property ownaro
Pnampl relaaaaa and notlcaa vera placed in the local nenpaper announcing tba availabllity of the atudy and announcing two public Matingamp to be bald on rune 1 ltll and June 1 11131 napectlvaly The purpoaa of the June 1 ltll -bullting vaa to preHnt tho finllingo of tho otudy and to diocuoo tho reaa41al
- - optio~ which have been conaidered middotThe purpon of the June 1 ltiJ etlng vaa to receive input frca the affecte4 ~unity oa tbe re~nded alterutivaa andreceive public input on the
~c~~~tn11r~ai~ t~t~l~U~i~ centonal office for review
PIASIIILITY STUD ALTIIUIATlYIII
The object of the feaaibility atudy vaa to develop aource control r dtal actlona which would reduce andor aliainata the off-alta aigration of contuinantl and al1ainata the axiatlng direct contact hazarda at the alta aaanating fra four unlined lagoona and a foDMr oil apraading area The raaulta of the r dial invaatigation have indicated that contaa1Mnta have aigrate4 off the alta via aurface runoff and ground vatal ~middot con~antrationa bull of contuinanta on-alta are vary l-lgh and aoat notably PCIa are
middot in the tbouaanda of PPII range volatile organ~ca in the hundreda of ppa range and heavy aetala aa bigh a1 6 A plae ia aoving towarda a recreational pond knovn aa cornell Pond vhich
middot draina into a lake dealgnated aa a aecondary water aupply for the City of Pall River In add1tion the aite ia located over an aquifer which aervea aa a recharge area for a portion of the
- Town where a nev aunicipal well ia achaduled to be 1natalled within the year The town ia currently purchaaing water fr011 a neighboring tovn on an lntarla basia and auat develop future
I
c -2shy
-shyauppliea adeqUate to bullbullrvbull t~e - tovnbulla needa
The priaary aourcaa of contampJDi~ation at the alta that muat be addraaaad by ruedial alternatives area
( l) Pour unlined lagoona in the northern portion of the alta 12) A forioer coollng pond area fllled with aand C3) An oil apraading area in the vaatarn portion of tha alta (4) Other contiAinatad aoil araaa ( bullhot apotabull)
be initial liat of raaadial actions conaicSarad includach No action Black topping tha entire alta Kicrobiological treataent ~
middot Excavation of middothazardous aubatancaa and atockpiling ~~ rntainme ntIaolation ~ ampxcavation traataent and ancapaulation onaita noorlxcavation traataent (onoff-alta) and off-alta diapoaal -laquo ccbinationa of the above ltmiddot ~
Tha initial acreaning of altarnativaa focuHd on Zthe geologic mnconclltiona and otMr cbaracteriatica of the aite the type1 and n concentrationbull of conttnanta aDd the ability of the alternativea bull 0
to effectively bullltigate the threat to public health welfare or el the environt The prlaary featurebull of the lite are highly fractured bedroCk a high ground water table and high concentrationa of tcabulla volatile organica and heavy aetala The aite baa beea found to be a continuoua aource of cbebulllcal contaairiatldh to tM middotadjacent vetlanda and aurface hter bodiea PCBa are bullgrating over the aurface of the aoil by pby ical forebullbull aucb aa 1urface runoff and -atherlng
The lnltlal ecreenlng reeulted in rejecting aanr of the ftlt~nativea AI docuaented in the attached Bealth and Riak middot Alaeant then ia a aignificant rtk to public health bullII through direct contact inhalation andor denaal expoaure fro vi~ blown particulatbullbullmiddot middotThe continuoua leaching of contuinanta fro the aite to the environaent threaten potential contbullination of water auppliea Tbe no action alternative waa rejected blcauH of the health babullarda and the availability of feaaible alternativea Part~al action aucb ampI atockpiling or black topping vaa detemined not to be aufficient to prevent continuoua enviroNRental degradatlo bull 8
middot lhe bullixture of waatea in aucb high and toxic concentrationbull de middot the option of bulltcrobtal treatent ineffective WI detenained middot wthat any fora of inaitu containaent or iaolalion would not be in~~~~ b~=b~~auabull of the highly fractured bedrock and
The reaulta of the initial acreenlng idenitfied two alternativebull aa being technically feaaible to aitigate the threat to public health welfare or the environment The two ~e~t~ri =~e~~~t a public meeting on June 1 1983
middot=
middotmiddot middotmiddotI c -3shy
middot 1 Excavation of hazardoua aubatanceaJ treataant on aite
and ancapaulation 2 ~ Excavation trans port and diapoaal off-site of hazar doua
aubatancaa and alta capping
Alternative 1 (excavation treatment on alta and ancapaulation) vaa further deacribe CS aa a vaata atabilizationfixation procaaa in which tha contulnatad aatariala once excavated and aolidUiad are cbically and aachanically atabla Thaaa solid aatariala would than be placed on a two-foot clay linad baaa with a leachate collection ayat and atoraga Any leachate collected would be bulliniaal in voluaa and tranaportad by truck to a traataant facility A four-foot aaparation betwan high groundwater an4 the bottaa
- of tha vaataa would be aaintained and the final alope of the aite once fully encapaulated would be lOt Thia remedial action la ~atiaatecS to have a capital coat of $1854000 a preaentworth 20-year coat of $2270000 and have an annual operation
~~~ aalntenance coat of stasoo
~ middot Alternative 2 (excavation off-aite diapoaal and alte capping) middot middot middot iiiVolvea Hveralmiddot off-aite diapoaal optiona auch aa c incineratioa
middot - middot (of the lAgoon contentamp) r aolicllfication or fixation prior to ahis-ent ~o a diapoaal facilityr or fixation traataent and diopooalmiddot ot on off-oite facility Approdaotely 3100 cubic middot middot jarda of lagoon waate and 3900 cubic yarda of contaainated aoila will need to bo re110vod frca the oite It io onticipota tbot middot S
trucko per day will bo loaded ond bullent fr- tho oito for a poriod of 70 to 90 daya After the contbulllnanta have been reaoved frca the oite clean fill will bo brollh~in tho oite graded and a
~middotrl~~~o~tieio-~r~tJbullomiddot~~~ooo abd an annual operation middot~~ aaintenanc_e coat of fl 000 middot
b a reault of c~enta received at the June 1 public Meting middot middotCDM waa taakad to perfora varioua leachability teata deacribed
inmiddot tbo BPA bullanual - Guide to the DioSTul of Chemically Stabilioed arid SOlidified hate (Septelibir 198 on the aolldihed aiudgeA bull-pia of the waatea waa aolidified by the SOlid Tak (Morrow Georgie) proceaa Tbe taata performed includadc(l) an organic BP TOdcity Scan(2) a PCB IP ntract1 and(]) a modified ~bull extraction for volatile organica The reaulta ahovad that tha bullbulltala and PCB bulla were bound by the proceaa but that the organlea did leach out Aa a reault of theue tbullata the atabllatlon of
the contaainanta on the aite would not be a reliable alternative _ and the aora extenaiue containaett ayatea would ~ neceaaary
In addition and in reaponae to commentamp received at the June 1 183 bulleating a 7th option wae developed that would
middotmiddotprovide bull aore axtenai ve containment ayaua
u
i
I
f
bullII 8
middot middotmiddot c- cmiddot
-middotshyr) The aaauptiona uaad for tha 110ra axtanaiva containment ayataa
option are aa follovaa
bull Double liner ayataa ( aynthatlcclay) bull Leachate collection above each liner bull Clay cap bull Mlnlaua of 10 feat between tha high groundwater and tha botta
of tha waataa middot middot bull Integrated layer of peat between the vaata aatarlal and tha
firat liner to retard tha waata avnt bull No aol141flcatlon of vaataa bull Segregation of aludgaaoil vaata froa the aaaaonal high gr~und
famptar tabla aa follovaa
2 of clay IIA8D
1 of gravel middot-- abull of peat
1 of aaDd middot of undardraln ayatbull1 1
2 bull of clay ayntbetic u r _ bull middot 1 of vnderdrain ayatbull 2 of clayayntbetic liner
10 bull of clean fill middot Bigb grOWidvatec rk) I
The aatlllatad cona for tblo r-r arei U205000 capital jooata U020000 2CI-year prant vcrtb ancl bullbullaooo annual 1 ~ration and tntananca coeu
Tha following tabla la a a-ary of the capital annual I opera~lon and aamplnteraance a~d prceent worth coata for each alternAtlbulle
ALTIUAlIVI middotmiddotmiddot
1 bcabullatlon trea~nt on aite and encapaulatlon 2 ampxcavatlon off-al te middotdlashy
bull pol ancl capping middot 3middot lxcabullation~ 110re
extenalve contaiNMnt
COMMUNITY INVOLVshy
CAPITAL ARNUAL PltiSIIIIT Dill IIORTII
nes4ooo 500 U270000
uosoooo uooo u36oooo
U205000 fiiOOO U020000
Many Queationa were aaked about the effectrvefteaa of aolldlficatlon eapeclally on PCBbull and organic waatea A ampelectaan for the town atated that -only off- a itbull diapoaal would be technically adequate toprotect the underlying aquifer which aerved tha town bulla well (now cloaed) and which will be uaed for a future well alte
---- - c-- - --shy-sshy
-i Be did not believe that the toWn would accept solidification and ~ capping _becauae of the poaaibility that leaching of contaminantbull
could occur in 20 to 30 yeara Be indicated that the town c11d not vlab to rely excluaively on the C011111onwealtha operation and aalntenance becauae in 20 to 30 yeara the political clite middotcould be aignificantly changed Be waa Concerned that any failure of tbe cap or aolidification proceaa would aean an exceaaive burden to the town in years to coae middot middot
Sibullilar concerns vera voiced by aaveral of the residents lgtpresent One abutting property owner stated that abe vaa in 0
favor of On-site encapsulation instead of off-alta disposal 3 because aha did not viah the truck traffic and decontamination z
~procedurebull to potentially dlaflgure her property _ 00
At the aecond public aeetlng fifteen people teatlfled Jgtr -olt
and all bUt one aupported off-al te dlapoaal bullbull the final ruedlal ~ ltmiddotactionmiddot In addition 9 written atatementa were received and 7 aupported off-alte and 2 aupported on alta encapaulatlon without Z aolldlflctlon COplea of the written coenta received are 0bull middot attached and the reglatratlon foraa of the apeakera Tbe public 0
middot ~nta received tended to reiterate four aajor pointas (U that 0
the nature of the alta ltaelf la lllauited for onalte rdyI- -- aO td~goY~~ntetlbea~~~~it~~rr~r vneamp ouppli rCZl tbat oolidiflcatlQn io otill unproven becbnology and in tblo cbull bad bean found not to bind the organlcorUl
that tbere ia a general lack of conftdence in tbe long tem middot
~~l=~lhfbullnd~c=~middot~ir~nad~nance off_-elte diapoaal to another area of tbe country better aulted fo~ aaaardoua wrbulltbull diapoaa~- la tbe 110at reliable deciaion
JtECOIUINDED ACTIO
Sctlon 30068(j) -of the National Contingency Plan (NCP) [47rR 31180 July U ltl3] otatea that the appproprlate extent of redy ahall be deterained by the lead agencybull middotaelection of
the reMdlal alternative which the agency deterair bullbull ia cort shy effective U e the loveat coat alternative that ia technologishy cally feaaible and reliable) and which effectively bullitlgatea and ainibullizea daaage to and providea adequate protection of public health Vlfare or the enviroNMnt Baaed on our evaluation of the coat-t~ffectlveneaa of each of the propoaed alternativeamp the commentbull received froa the public the additional inforaation aupplled by our conaultant in reaponae to the public commentamp received at the flrat bulleating and information received fra the atate we recommend the excAvation tranaport and off-altbull dlapoaal of hazardoua aubatancea and aite capping ampI the aource control remedial _a~tion middot
I I I I
( __
~~
OUr reaaona for thia rec01111endation are that there are phyaical alta characterlatica which lillit true effectiveneaa of aolidification or encapaulation aa the final oneite reiledy TheM llaitationa are a highly fluctuating aeaaonal groundwater table low lying adjacent wetlands and private water walla which drav on the underlying aquifer The reaulta of the aolidification leaching teata ahoved that the organic c011pounda did not bind in the aolidified aaaa With organic concentratione in the hundreda of ppa range middot we believe that encapaulation ia inaiSequate to protect auch a water aenaitlve area The axtanaiva public comaent received in aupport of off-alta dlapoaal for thaae reaaona further juotlfioo tho addltlonll expenditure of fundo for ro100val of 7000 cubic yarda middotof aaterial Alao the additional expenditure prOYidea a auch ore reliable cleanup and eliainatea the potential to further contbulllnate a public water supply
BTATII IIPOT
middotof eat~t~bullui~~~middot~oh0p~~~o=~lbullbullbull Maaaacbu-tta Dlpartent of ampnviroental Quality lnginearino n~nda excavation transport and off-alta dia~al of babullardoua aubetancea middot and alta capping A letter confinling the Statebulla concurrence with thia nc~ndation ia attached
PIIOIOBBD ACTIOII
bull rwqueot your approval of tbbull offolto dlopoool r-y Dur abodule callo for doalgn by tho Co~ of BnglnHro to be COIIplotecl by Auguat 1 1183 wlth conatnactiont-o proceed by Roveaber 15 1913 and coapletion of tbia aource control raMdy by January 1- ltl4 ltu follnwing bulletlonu need to be coapleted to initiate theae activitleas middot middot
middot middot1middot ampn~er into a Superfundmiddot State Contract
2 Develop An InterageneY Agrbullbull-nt with the Corpbull of lngineera for deaign and eo~atructlon aetivitiel
middot middot~
middot c c middot middot ~ aecHal lllplementation
Alternative Selection a-solve Inc Site
North Dartmouth Maaaachuaatta
On May zs 1983 tho Booton rogionol office of IPA relooood tho Preliain~~ry baolllal Invootigation and Poaoibility Studyfor a-solve Inc Baampardoua Waate ampita Dartaoutb Maaaachuaattabull prepared by the conaultlng fira of Callp Draaaar 6 Me~bullbull IDC Copiaa of the C~port vera diatributad by tha Town a Bazardoua Waata Coordinator to the aaabera of the Board of Baaltb and lelacten Coplaa wra alao placed in the Tovn library Town offfceo and in tho neighboring town of Wootport Io addition a copy of tbe atudy bullbullbull delivered to each of the tvo abutting property ownaro
Pnampl relaaaaa and notlcaa vera placed in the local nenpaper announcing tba availabllity of the atudy and announcing two public Matingamp to be bald on rune 1 ltll and June 1 11131 napectlvaly The purpoaa of the June 1 ltll -bullting vaa to preHnt tho finllingo of tho otudy and to diocuoo tho reaa41al
- - optio~ which have been conaidered middotThe purpon of the June 1 ltiJ etlng vaa to receive input frca the affecte4 ~unity oa tbe re~nded alterutivaa andreceive public input on the
~c~~~tn11r~ai~ t~t~l~U~i~ centonal office for review
PIASIIILITY STUD ALTIIUIATlYIII
The object of the feaaibility atudy vaa to develop aource control r dtal actlona which would reduce andor aliainata the off-alta aigration of contuinantl and al1ainata the axiatlng direct contact hazarda at the alta aaanating fra four unlined lagoona and a foDMr oil apraading area The raaulta of the r dial invaatigation have indicated that contaa1Mnta have aigrate4 off the alta via aurface runoff and ground vatal ~middot con~antrationa bull of contuinanta on-alta are vary l-lgh and aoat notably PCIa are
middot in the tbouaanda of PPII range volatile organ~ca in the hundreda of ppa range and heavy aetala aa bigh a1 6 A plae ia aoving towarda a recreational pond knovn aa cornell Pond vhich
middot draina into a lake dealgnated aa a aecondary water aupply for the City of Pall River In add1tion the aite ia located over an aquifer which aervea aa a recharge area for a portion of the
- Town where a nev aunicipal well ia achaduled to be 1natalled within the year The town ia currently purchaaing water fr011 a neighboring tovn on an lntarla basia and auat develop future
I
c -2shy
-shyauppliea adeqUate to bullbullrvbull t~e - tovnbulla needa
The priaary aourcaa of contampJDi~ation at the alta that muat be addraaaad by ruedial alternatives area
( l) Pour unlined lagoona in the northern portion of the alta 12) A forioer coollng pond area fllled with aand C3) An oil apraading area in the vaatarn portion of tha alta (4) Other contiAinatad aoil araaa ( bullhot apotabull)
be initial liat of raaadial actions conaicSarad includach No action Black topping tha entire alta Kicrobiological treataent ~
middot Excavation of middothazardous aubatancaa and atockpiling ~~ rntainme ntIaolation ~ ampxcavation traataent and ancapaulation onaita noorlxcavation traataent (onoff-alta) and off-alta diapoaal -laquo ccbinationa of the above ltmiddot ~
Tha initial acreaning of altarnativaa focuHd on Zthe geologic mnconclltiona and otMr cbaracteriatica of the aite the type1 and n concentrationbull of conttnanta aDd the ability of the alternativea bull 0
to effectively bullltigate the threat to public health welfare or el the environt The prlaary featurebull of the lite are highly fractured bedroCk a high ground water table and high concentrationa of tcabulla volatile organica and heavy aetala The aite baa beea found to be a continuoua aource of cbebulllcal contaairiatldh to tM middotadjacent vetlanda and aurface hter bodiea PCBa are bullgrating over the aurface of the aoil by pby ical forebullbull aucb aa 1urface runoff and -atherlng
The lnltlal ecreenlng reeulted in rejecting aanr of the ftlt~nativea AI docuaented in the attached Bealth and Riak middot Alaeant then ia a aignificant rtk to public health bullII through direct contact inhalation andor denaal expoaure fro vi~ blown particulatbullbullmiddot middotThe continuoua leaching of contuinanta fro the aite to the environaent threaten potential contbullination of water auppliea Tbe no action alternative waa rejected blcauH of the health babullarda and the availability of feaaible alternativea Part~al action aucb ampI atockpiling or black topping vaa detemined not to be aufficient to prevent continuoua enviroNRental degradatlo bull 8
middot lhe bullixture of waatea in aucb high and toxic concentrationbull de middot the option of bulltcrobtal treatent ineffective WI detenained middot wthat any fora of inaitu containaent or iaolalion would not be in~~~~ b~=b~~auabull of the highly fractured bedrock and
The reaulta of the initial acreenlng idenitfied two alternativebull aa being technically feaaible to aitigate the threat to public health welfare or the environment The two ~e~t~ri =~e~~~t a public meeting on June 1 1983
middot=
middotmiddot middotmiddotI c -3shy
middot 1 Excavation of hazardoua aubatanceaJ treataant on aite
and ancapaulation 2 ~ Excavation trans port and diapoaal off-site of hazar doua
aubatancaa and alta capping
Alternative 1 (excavation treatment on alta and ancapaulation) vaa further deacribe CS aa a vaata atabilizationfixation procaaa in which tha contulnatad aatariala once excavated and aolidUiad are cbically and aachanically atabla Thaaa solid aatariala would than be placed on a two-foot clay linad baaa with a leachate collection ayat and atoraga Any leachate collected would be bulliniaal in voluaa and tranaportad by truck to a traataant facility A four-foot aaparation betwan high groundwater an4 the bottaa
- of tha vaataa would be aaintained and the final alope of the aite once fully encapaulated would be lOt Thia remedial action la ~atiaatecS to have a capital coat of $1854000 a preaentworth 20-year coat of $2270000 and have an annual operation
~~~ aalntenance coat of stasoo
~ middot Alternative 2 (excavation off-aite diapoaal and alte capping) middot middot middot iiiVolvea Hveralmiddot off-aite diapoaal optiona auch aa c incineratioa
middot - middot (of the lAgoon contentamp) r aolicllfication or fixation prior to ahis-ent ~o a diapoaal facilityr or fixation traataent and diopooalmiddot ot on off-oite facility Approdaotely 3100 cubic middot middot jarda of lagoon waate and 3900 cubic yarda of contaainated aoila will need to bo re110vod frca the oite It io onticipota tbot middot S
trucko per day will bo loaded ond bullent fr- tho oito for a poriod of 70 to 90 daya After the contbulllnanta have been reaoved frca the oite clean fill will bo brollh~in tho oite graded and a
~middotrl~~~o~tieio-~r~tJbullomiddot~~~ooo abd an annual operation middot~~ aaintenanc_e coat of fl 000 middot
b a reault of c~enta received at the June 1 public Meting middot middotCDM waa taakad to perfora varioua leachability teata deacribed
inmiddot tbo BPA bullanual - Guide to the DioSTul of Chemically Stabilioed arid SOlidified hate (Septelibir 198 on the aolldihed aiudgeA bull-pia of the waatea waa aolidified by the SOlid Tak (Morrow Georgie) proceaa Tbe taata performed includadc(l) an organic BP TOdcity Scan(2) a PCB IP ntract1 and(]) a modified ~bull extraction for volatile organica The reaulta ahovad that tha bullbulltala and PCB bulla were bound by the proceaa but that the organlea did leach out Aa a reault of theue tbullata the atabllatlon of
the contaainanta on the aite would not be a reliable alternative _ and the aora extenaiue containaett ayatea would ~ neceaaary
In addition and in reaponae to commentamp received at the June 1 183 bulleating a 7th option wae developed that would
middotmiddotprovide bull aore axtenai ve containment ayaua
u
i
I
f
bullII 8
middot middotmiddot c- cmiddot
-middotshyr) The aaauptiona uaad for tha 110ra axtanaiva containment ayataa
option are aa follovaa
bull Double liner ayataa ( aynthatlcclay) bull Leachate collection above each liner bull Clay cap bull Mlnlaua of 10 feat between tha high groundwater and tha botta
of tha waataa middot middot bull Integrated layer of peat between the vaata aatarlal and tha
firat liner to retard tha waata avnt bull No aol141flcatlon of vaataa bull Segregation of aludgaaoil vaata froa the aaaaonal high gr~und
famptar tabla aa follovaa
2 of clay IIA8D
1 of gravel middot-- abull of peat
1 of aaDd middot of undardraln ayatbull1 1
2 bull of clay ayntbetic u r _ bull middot 1 of vnderdrain ayatbull 2 of clayayntbetic liner
10 bull of clean fill middot Bigb grOWidvatec rk) I
The aatlllatad cona for tblo r-r arei U205000 capital jooata U020000 2CI-year prant vcrtb ancl bullbullaooo annual 1 ~ration and tntananca coeu
Tha following tabla la a a-ary of the capital annual I opera~lon and aamplnteraance a~d prceent worth coata for each alternAtlbulle
ALTIUAlIVI middotmiddotmiddot
1 bcabullatlon trea~nt on aite and encapaulatlon 2 ampxcavatlon off-al te middotdlashy
bull pol ancl capping middot 3middot lxcabullation~ 110re
extenalve contaiNMnt
COMMUNITY INVOLVshy
CAPITAL ARNUAL PltiSIIIIT Dill IIORTII
nes4ooo 500 U270000
uosoooo uooo u36oooo
U205000 fiiOOO U020000
Many Queationa were aaked about the effectrvefteaa of aolldlficatlon eapeclally on PCBbull and organic waatea A ampelectaan for the town atated that -only off- a itbull diapoaal would be technically adequate toprotect the underlying aquifer which aerved tha town bulla well (now cloaed) and which will be uaed for a future well alte
---- - c-- - --shy-sshy
-i Be did not believe that the toWn would accept solidification and ~ capping _becauae of the poaaibility that leaching of contaminantbull
could occur in 20 to 30 yeara Be indicated that the town c11d not vlab to rely excluaively on the C011111onwealtha operation and aalntenance becauae in 20 to 30 yeara the political clite middotcould be aignificantly changed Be waa Concerned that any failure of tbe cap or aolidification proceaa would aean an exceaaive burden to the town in years to coae middot middot
Sibullilar concerns vera voiced by aaveral of the residents lgtpresent One abutting property owner stated that abe vaa in 0
favor of On-site encapsulation instead of off-alta disposal 3 because aha did not viah the truck traffic and decontamination z
~procedurebull to potentially dlaflgure her property _ 00
At the aecond public aeetlng fifteen people teatlfled Jgtr -olt
and all bUt one aupported off-al te dlapoaal bullbull the final ruedlal ~ ltmiddotactionmiddot In addition 9 written atatementa were received and 7 aupported off-alte and 2 aupported on alta encapaulatlon without Z aolldlflctlon COplea of the written coenta received are 0bull middot attached and the reglatratlon foraa of the apeakera Tbe public 0
middot ~nta received tended to reiterate four aajor pointas (U that 0
the nature of the alta ltaelf la lllauited for onalte rdyI- -- aO td~goY~~ntetlbea~~~~it~~rr~r vneamp ouppli rCZl tbat oolidiflcatlQn io otill unproven becbnology and in tblo cbull bad bean found not to bind the organlcorUl
that tbere ia a general lack of conftdence in tbe long tem middot
~~l=~lhfbullnd~c=~middot~ir~nad~nance off_-elte diapoaal to another area of tbe country better aulted fo~ aaaardoua wrbulltbull diapoaa~- la tbe 110at reliable deciaion
JtECOIUINDED ACTIO
Sctlon 30068(j) -of the National Contingency Plan (NCP) [47rR 31180 July U ltl3] otatea that the appproprlate extent of redy ahall be deterained by the lead agencybull middotaelection of
the reMdlal alternative which the agency deterair bullbull ia cort shy effective U e the loveat coat alternative that ia technologishy cally feaaible and reliable) and which effectively bullitlgatea and ainibullizea daaage to and providea adequate protection of public health Vlfare or the enviroNMnt Baaed on our evaluation of the coat-t~ffectlveneaa of each of the propoaed alternativeamp the commentbull received froa the public the additional inforaation aupplled by our conaultant in reaponae to the public commentamp received at the flrat bulleating and information received fra the atate we recommend the excAvation tranaport and off-altbull dlapoaal of hazardoua aubatancea and aite capping ampI the aource control remedial _a~tion middot
I I I I
( __
~~
OUr reaaona for thia rec01111endation are that there are phyaical alta characterlatica which lillit true effectiveneaa of aolidification or encapaulation aa the final oneite reiledy TheM llaitationa are a highly fluctuating aeaaonal groundwater table low lying adjacent wetlands and private water walla which drav on the underlying aquifer The reaulta of the aolidification leaching teata ahoved that the organic c011pounda did not bind in the aolidified aaaa With organic concentratione in the hundreda of ppa range middot we believe that encapaulation ia inaiSequate to protect auch a water aenaitlve area The axtanaiva public comaent received in aupport of off-alta dlapoaal for thaae reaaona further juotlfioo tho addltlonll expenditure of fundo for ro100val of 7000 cubic yarda middotof aaterial Alao the additional expenditure prOYidea a auch ore reliable cleanup and eliainatea the potential to further contbulllnate a public water supply
BTATII IIPOT
middotof eat~t~bullui~~~middot~oh0p~~~o=~lbullbullbull Maaaacbu-tta Dlpartent of ampnviroental Quality lnginearino n~nda excavation transport and off-alta dia~al of babullardoua aubetancea middot and alta capping A letter confinling the Statebulla concurrence with thia nc~ndation ia attached
PIIOIOBBD ACTIOII
bull rwqueot your approval of tbbull offolto dlopoool r-y Dur abodule callo for doalgn by tho Co~ of BnglnHro to be COIIplotecl by Auguat 1 1183 wlth conatnactiont-o proceed by Roveaber 15 1913 and coapletion of tbia aource control raMdy by January 1- ltl4 ltu follnwing bulletlonu need to be coapleted to initiate theae activitleas middot middot
middot middot1middot ampn~er into a Superfundmiddot State Contract
2 Develop An InterageneY Agrbullbull-nt with the Corpbull of lngineera for deaign and eo~atructlon aetivitiel
middot middot~
c -2shy
-shyauppliea adeqUate to bullbullrvbull t~e - tovnbulla needa
The priaary aourcaa of contampJDi~ation at the alta that muat be addraaaad by ruedial alternatives area
( l) Pour unlined lagoona in the northern portion of the alta 12) A forioer coollng pond area fllled with aand C3) An oil apraading area in the vaatarn portion of tha alta (4) Other contiAinatad aoil araaa ( bullhot apotabull)
be initial liat of raaadial actions conaicSarad includach No action Black topping tha entire alta Kicrobiological treataent ~
middot Excavation of middothazardous aubatancaa and atockpiling ~~ rntainme ntIaolation ~ ampxcavation traataent and ancapaulation onaita noorlxcavation traataent (onoff-alta) and off-alta diapoaal -laquo ccbinationa of the above ltmiddot ~
Tha initial acreaning of altarnativaa focuHd on Zthe geologic mnconclltiona and otMr cbaracteriatica of the aite the type1 and n concentrationbull of conttnanta aDd the ability of the alternativea bull 0
to effectively bullltigate the threat to public health welfare or el the environt The prlaary featurebull of the lite are highly fractured bedroCk a high ground water table and high concentrationa of tcabulla volatile organica and heavy aetala The aite baa beea found to be a continuoua aource of cbebulllcal contaairiatldh to tM middotadjacent vetlanda and aurface hter bodiea PCBa are bullgrating over the aurface of the aoil by pby ical forebullbull aucb aa 1urface runoff and -atherlng
The lnltlal ecreenlng reeulted in rejecting aanr of the ftlt~nativea AI docuaented in the attached Bealth and Riak middot Alaeant then ia a aignificant rtk to public health bullII through direct contact inhalation andor denaal expoaure fro vi~ blown particulatbullbullmiddot middotThe continuoua leaching of contuinanta fro the aite to the environaent threaten potential contbullination of water auppliea Tbe no action alternative waa rejected blcauH of the health babullarda and the availability of feaaible alternativea Part~al action aucb ampI atockpiling or black topping vaa detemined not to be aufficient to prevent continuoua enviroNRental degradatlo bull 8
middot lhe bullixture of waatea in aucb high and toxic concentrationbull de middot the option of bulltcrobtal treatent ineffective WI detenained middot wthat any fora of inaitu containaent or iaolalion would not be in~~~~ b~=b~~auabull of the highly fractured bedrock and
The reaulta of the initial acreenlng idenitfied two alternativebull aa being technically feaaible to aitigate the threat to public health welfare or the environment The two ~e~t~ri =~e~~~t a public meeting on June 1 1983
middot=
middotmiddot middotmiddotI c -3shy
middot 1 Excavation of hazardoua aubatanceaJ treataant on aite
and ancapaulation 2 ~ Excavation trans port and diapoaal off-site of hazar doua
aubatancaa and alta capping
Alternative 1 (excavation treatment on alta and ancapaulation) vaa further deacribe CS aa a vaata atabilizationfixation procaaa in which tha contulnatad aatariala once excavated and aolidUiad are cbically and aachanically atabla Thaaa solid aatariala would than be placed on a two-foot clay linad baaa with a leachate collection ayat and atoraga Any leachate collected would be bulliniaal in voluaa and tranaportad by truck to a traataant facility A four-foot aaparation betwan high groundwater an4 the bottaa
- of tha vaataa would be aaintained and the final alope of the aite once fully encapaulated would be lOt Thia remedial action la ~atiaatecS to have a capital coat of $1854000 a preaentworth 20-year coat of $2270000 and have an annual operation
~~~ aalntenance coat of stasoo
~ middot Alternative 2 (excavation off-aite diapoaal and alte capping) middot middot middot iiiVolvea Hveralmiddot off-aite diapoaal optiona auch aa c incineratioa
middot - middot (of the lAgoon contentamp) r aolicllfication or fixation prior to ahis-ent ~o a diapoaal facilityr or fixation traataent and diopooalmiddot ot on off-oite facility Approdaotely 3100 cubic middot middot jarda of lagoon waate and 3900 cubic yarda of contaainated aoila will need to bo re110vod frca the oite It io onticipota tbot middot S
trucko per day will bo loaded ond bullent fr- tho oito for a poriod of 70 to 90 daya After the contbulllnanta have been reaoved frca the oite clean fill will bo brollh~in tho oite graded and a
~middotrl~~~o~tieio-~r~tJbullomiddot~~~ooo abd an annual operation middot~~ aaintenanc_e coat of fl 000 middot
b a reault of c~enta received at the June 1 public Meting middot middotCDM waa taakad to perfora varioua leachability teata deacribed
inmiddot tbo BPA bullanual - Guide to the DioSTul of Chemically Stabilioed arid SOlidified hate (Septelibir 198 on the aolldihed aiudgeA bull-pia of the waatea waa aolidified by the SOlid Tak (Morrow Georgie) proceaa Tbe taata performed includadc(l) an organic BP TOdcity Scan(2) a PCB IP ntract1 and(]) a modified ~bull extraction for volatile organica The reaulta ahovad that tha bullbulltala and PCB bulla were bound by the proceaa but that the organlea did leach out Aa a reault of theue tbullata the atabllatlon of
the contaainanta on the aite would not be a reliable alternative _ and the aora extenaiue containaett ayatea would ~ neceaaary
In addition and in reaponae to commentamp received at the June 1 183 bulleating a 7th option wae developed that would
middotmiddotprovide bull aore axtenai ve containment ayaua
u
i
I
f
bullII 8
middot middotmiddot c- cmiddot
-middotshyr) The aaauptiona uaad for tha 110ra axtanaiva containment ayataa
option are aa follovaa
bull Double liner ayataa ( aynthatlcclay) bull Leachate collection above each liner bull Clay cap bull Mlnlaua of 10 feat between tha high groundwater and tha botta
of tha waataa middot middot bull Integrated layer of peat between the vaata aatarlal and tha
firat liner to retard tha waata avnt bull No aol141flcatlon of vaataa bull Segregation of aludgaaoil vaata froa the aaaaonal high gr~und
famptar tabla aa follovaa
2 of clay IIA8D
1 of gravel middot-- abull of peat
1 of aaDd middot of undardraln ayatbull1 1
2 bull of clay ayntbetic u r _ bull middot 1 of vnderdrain ayatbull 2 of clayayntbetic liner
10 bull of clean fill middot Bigb grOWidvatec rk) I
The aatlllatad cona for tblo r-r arei U205000 capital jooata U020000 2CI-year prant vcrtb ancl bullbullaooo annual 1 ~ration and tntananca coeu
Tha following tabla la a a-ary of the capital annual I opera~lon and aamplnteraance a~d prceent worth coata for each alternAtlbulle
ALTIUAlIVI middotmiddotmiddot
1 bcabullatlon trea~nt on aite and encapaulatlon 2 ampxcavatlon off-al te middotdlashy
bull pol ancl capping middot 3middot lxcabullation~ 110re
extenalve contaiNMnt
COMMUNITY INVOLVshy
CAPITAL ARNUAL PltiSIIIIT Dill IIORTII
nes4ooo 500 U270000
uosoooo uooo u36oooo
U205000 fiiOOO U020000
Many Queationa were aaked about the effectrvefteaa of aolldlficatlon eapeclally on PCBbull and organic waatea A ampelectaan for the town atated that -only off- a itbull diapoaal would be technically adequate toprotect the underlying aquifer which aerved tha town bulla well (now cloaed) and which will be uaed for a future well alte
---- - c-- - --shy-sshy
-i Be did not believe that the toWn would accept solidification and ~ capping _becauae of the poaaibility that leaching of contaminantbull
could occur in 20 to 30 yeara Be indicated that the town c11d not vlab to rely excluaively on the C011111onwealtha operation and aalntenance becauae in 20 to 30 yeara the political clite middotcould be aignificantly changed Be waa Concerned that any failure of tbe cap or aolidification proceaa would aean an exceaaive burden to the town in years to coae middot middot
Sibullilar concerns vera voiced by aaveral of the residents lgtpresent One abutting property owner stated that abe vaa in 0
favor of On-site encapsulation instead of off-alta disposal 3 because aha did not viah the truck traffic and decontamination z
~procedurebull to potentially dlaflgure her property _ 00
At the aecond public aeetlng fifteen people teatlfled Jgtr -olt
and all bUt one aupported off-al te dlapoaal bullbull the final ruedlal ~ ltmiddotactionmiddot In addition 9 written atatementa were received and 7 aupported off-alte and 2 aupported on alta encapaulatlon without Z aolldlflctlon COplea of the written coenta received are 0bull middot attached and the reglatratlon foraa of the apeakera Tbe public 0
middot ~nta received tended to reiterate four aajor pointas (U that 0
the nature of the alta ltaelf la lllauited for onalte rdyI- -- aO td~goY~~ntetlbea~~~~it~~rr~r vneamp ouppli rCZl tbat oolidiflcatlQn io otill unproven becbnology and in tblo cbull bad bean found not to bind the organlcorUl
that tbere ia a general lack of conftdence in tbe long tem middot
~~l=~lhfbullnd~c=~middot~ir~nad~nance off_-elte diapoaal to another area of tbe country better aulted fo~ aaaardoua wrbulltbull diapoaa~- la tbe 110at reliable deciaion
JtECOIUINDED ACTIO
Sctlon 30068(j) -of the National Contingency Plan (NCP) [47rR 31180 July U ltl3] otatea that the appproprlate extent of redy ahall be deterained by the lead agencybull middotaelection of
the reMdlal alternative which the agency deterair bullbull ia cort shy effective U e the loveat coat alternative that ia technologishy cally feaaible and reliable) and which effectively bullitlgatea and ainibullizea daaage to and providea adequate protection of public health Vlfare or the enviroNMnt Baaed on our evaluation of the coat-t~ffectlveneaa of each of the propoaed alternativeamp the commentbull received froa the public the additional inforaation aupplled by our conaultant in reaponae to the public commentamp received at the flrat bulleating and information received fra the atate we recommend the excAvation tranaport and off-altbull dlapoaal of hazardoua aubatancea and aite capping ampI the aource control remedial _a~tion middot
I I I I
( __
~~
OUr reaaona for thia rec01111endation are that there are phyaical alta characterlatica which lillit true effectiveneaa of aolidification or encapaulation aa the final oneite reiledy TheM llaitationa are a highly fluctuating aeaaonal groundwater table low lying adjacent wetlands and private water walla which drav on the underlying aquifer The reaulta of the aolidification leaching teata ahoved that the organic c011pounda did not bind in the aolidified aaaa With organic concentratione in the hundreda of ppa range middot we believe that encapaulation ia inaiSequate to protect auch a water aenaitlve area The axtanaiva public comaent received in aupport of off-alta dlapoaal for thaae reaaona further juotlfioo tho addltlonll expenditure of fundo for ro100val of 7000 cubic yarda middotof aaterial Alao the additional expenditure prOYidea a auch ore reliable cleanup and eliainatea the potential to further contbulllnate a public water supply
BTATII IIPOT
middotof eat~t~bullui~~~middot~oh0p~~~o=~lbullbullbull Maaaacbu-tta Dlpartent of ampnviroental Quality lnginearino n~nda excavation transport and off-alta dia~al of babullardoua aubetancea middot and alta capping A letter confinling the Statebulla concurrence with thia nc~ndation ia attached
PIIOIOBBD ACTIOII
bull rwqueot your approval of tbbull offolto dlopoool r-y Dur abodule callo for doalgn by tho Co~ of BnglnHro to be COIIplotecl by Auguat 1 1183 wlth conatnactiont-o proceed by Roveaber 15 1913 and coapletion of tbia aource control raMdy by January 1- ltl4 ltu follnwing bulletlonu need to be coapleted to initiate theae activitleas middot middot
middot middot1middot ampn~er into a Superfundmiddot State Contract
2 Develop An InterageneY Agrbullbull-nt with the Corpbull of lngineera for deaign and eo~atructlon aetivitiel
middot middot~
middotmiddot middotmiddotI c -3shy
middot 1 Excavation of hazardoua aubatanceaJ treataant on aite
and ancapaulation 2 ~ Excavation trans port and diapoaal off-site of hazar doua
aubatancaa and alta capping
Alternative 1 (excavation treatment on alta and ancapaulation) vaa further deacribe CS aa a vaata atabilizationfixation procaaa in which tha contulnatad aatariala once excavated and aolidUiad are cbically and aachanically atabla Thaaa solid aatariala would than be placed on a two-foot clay linad baaa with a leachate collection ayat and atoraga Any leachate collected would be bulliniaal in voluaa and tranaportad by truck to a traataant facility A four-foot aaparation betwan high groundwater an4 the bottaa
- of tha vaataa would be aaintained and the final alope of the aite once fully encapaulated would be lOt Thia remedial action la ~atiaatecS to have a capital coat of $1854000 a preaentworth 20-year coat of $2270000 and have an annual operation
~~~ aalntenance coat of stasoo
~ middot Alternative 2 (excavation off-aite diapoaal and alte capping) middot middot middot iiiVolvea Hveralmiddot off-aite diapoaal optiona auch aa c incineratioa
middot - middot (of the lAgoon contentamp) r aolicllfication or fixation prior to ahis-ent ~o a diapoaal facilityr or fixation traataent and diopooalmiddot ot on off-oite facility Approdaotely 3100 cubic middot middot jarda of lagoon waate and 3900 cubic yarda of contaainated aoila will need to bo re110vod frca the oite It io onticipota tbot middot S
trucko per day will bo loaded ond bullent fr- tho oito for a poriod of 70 to 90 daya After the contbulllnanta have been reaoved frca the oite clean fill will bo brollh~in tho oite graded and a
~middotrl~~~o~tieio-~r~tJbullomiddot~~~ooo abd an annual operation middot~~ aaintenanc_e coat of fl 000 middot
b a reault of c~enta received at the June 1 public Meting middot middotCDM waa taakad to perfora varioua leachability teata deacribed
inmiddot tbo BPA bullanual - Guide to the DioSTul of Chemically Stabilioed arid SOlidified hate (Septelibir 198 on the aolldihed aiudgeA bull-pia of the waatea waa aolidified by the SOlid Tak (Morrow Georgie) proceaa Tbe taata performed includadc(l) an organic BP TOdcity Scan(2) a PCB IP ntract1 and(]) a modified ~bull extraction for volatile organica The reaulta ahovad that tha bullbulltala and PCB bulla were bound by the proceaa but that the organlea did leach out Aa a reault of theue tbullata the atabllatlon of
the contaainanta on the aite would not be a reliable alternative _ and the aora extenaiue containaett ayatea would ~ neceaaary
In addition and in reaponae to commentamp received at the June 1 183 bulleating a 7th option wae developed that would
middotmiddotprovide bull aore axtenai ve containment ayaua
u
i
I
f
bullII 8
middot middotmiddot c- cmiddot
-middotshyr) The aaauptiona uaad for tha 110ra axtanaiva containment ayataa
option are aa follovaa
bull Double liner ayataa ( aynthatlcclay) bull Leachate collection above each liner bull Clay cap bull Mlnlaua of 10 feat between tha high groundwater and tha botta
of tha waataa middot middot bull Integrated layer of peat between the vaata aatarlal and tha
firat liner to retard tha waata avnt bull No aol141flcatlon of vaataa bull Segregation of aludgaaoil vaata froa the aaaaonal high gr~und
famptar tabla aa follovaa
2 of clay IIA8D
1 of gravel middot-- abull of peat
1 of aaDd middot of undardraln ayatbull1 1
2 bull of clay ayntbetic u r _ bull middot 1 of vnderdrain ayatbull 2 of clayayntbetic liner
10 bull of clean fill middot Bigb grOWidvatec rk) I
The aatlllatad cona for tblo r-r arei U205000 capital jooata U020000 2CI-year prant vcrtb ancl bullbullaooo annual 1 ~ration and tntananca coeu
Tha following tabla la a a-ary of the capital annual I opera~lon and aamplnteraance a~d prceent worth coata for each alternAtlbulle
ALTIUAlIVI middotmiddotmiddot
1 bcabullatlon trea~nt on aite and encapaulatlon 2 ampxcavatlon off-al te middotdlashy
bull pol ancl capping middot 3middot lxcabullation~ 110re
extenalve contaiNMnt
COMMUNITY INVOLVshy
CAPITAL ARNUAL PltiSIIIIT Dill IIORTII
nes4ooo 500 U270000
uosoooo uooo u36oooo
U205000 fiiOOO U020000
Many Queationa were aaked about the effectrvefteaa of aolldlficatlon eapeclally on PCBbull and organic waatea A ampelectaan for the town atated that -only off- a itbull diapoaal would be technically adequate toprotect the underlying aquifer which aerved tha town bulla well (now cloaed) and which will be uaed for a future well alte
---- - c-- - --shy-sshy
-i Be did not believe that the toWn would accept solidification and ~ capping _becauae of the poaaibility that leaching of contaminantbull
could occur in 20 to 30 yeara Be indicated that the town c11d not vlab to rely excluaively on the C011111onwealtha operation and aalntenance becauae in 20 to 30 yeara the political clite middotcould be aignificantly changed Be waa Concerned that any failure of tbe cap or aolidification proceaa would aean an exceaaive burden to the town in years to coae middot middot
Sibullilar concerns vera voiced by aaveral of the residents lgtpresent One abutting property owner stated that abe vaa in 0
favor of On-site encapsulation instead of off-alta disposal 3 because aha did not viah the truck traffic and decontamination z
~procedurebull to potentially dlaflgure her property _ 00
At the aecond public aeetlng fifteen people teatlfled Jgtr -olt
and all bUt one aupported off-al te dlapoaal bullbull the final ruedlal ~ ltmiddotactionmiddot In addition 9 written atatementa were received and 7 aupported off-alte and 2 aupported on alta encapaulatlon without Z aolldlflctlon COplea of the written coenta received are 0bull middot attached and the reglatratlon foraa of the apeakera Tbe public 0
middot ~nta received tended to reiterate four aajor pointas (U that 0
the nature of the alta ltaelf la lllauited for onalte rdyI- -- aO td~goY~~ntetlbea~~~~it~~rr~r vneamp ouppli rCZl tbat oolidiflcatlQn io otill unproven becbnology and in tblo cbull bad bean found not to bind the organlcorUl
that tbere ia a general lack of conftdence in tbe long tem middot
~~l=~lhfbullnd~c=~middot~ir~nad~nance off_-elte diapoaal to another area of tbe country better aulted fo~ aaaardoua wrbulltbull diapoaa~- la tbe 110at reliable deciaion
JtECOIUINDED ACTIO
Sctlon 30068(j) -of the National Contingency Plan (NCP) [47rR 31180 July U ltl3] otatea that the appproprlate extent of redy ahall be deterained by the lead agencybull middotaelection of
the reMdlal alternative which the agency deterair bullbull ia cort shy effective U e the loveat coat alternative that ia technologishy cally feaaible and reliable) and which effectively bullitlgatea and ainibullizea daaage to and providea adequate protection of public health Vlfare or the enviroNMnt Baaed on our evaluation of the coat-t~ffectlveneaa of each of the propoaed alternativeamp the commentbull received froa the public the additional inforaation aupplled by our conaultant in reaponae to the public commentamp received at the flrat bulleating and information received fra the atate we recommend the excAvation tranaport and off-altbull dlapoaal of hazardoua aubatancea and aite capping ampI the aource control remedial _a~tion middot
I I I I
( __
~~
OUr reaaona for thia rec01111endation are that there are phyaical alta characterlatica which lillit true effectiveneaa of aolidification or encapaulation aa the final oneite reiledy TheM llaitationa are a highly fluctuating aeaaonal groundwater table low lying adjacent wetlands and private water walla which drav on the underlying aquifer The reaulta of the aolidification leaching teata ahoved that the organic c011pounda did not bind in the aolidified aaaa With organic concentratione in the hundreda of ppa range middot we believe that encapaulation ia inaiSequate to protect auch a water aenaitlve area The axtanaiva public comaent received in aupport of off-alta dlapoaal for thaae reaaona further juotlfioo tho addltlonll expenditure of fundo for ro100val of 7000 cubic yarda middotof aaterial Alao the additional expenditure prOYidea a auch ore reliable cleanup and eliainatea the potential to further contbulllnate a public water supply
BTATII IIPOT
middotof eat~t~bullui~~~middot~oh0p~~~o=~lbullbullbull Maaaacbu-tta Dlpartent of ampnviroental Quality lnginearino n~nda excavation transport and off-alta dia~al of babullardoua aubetancea middot and alta capping A letter confinling the Statebulla concurrence with thia nc~ndation ia attached
PIIOIOBBD ACTIOII
bull rwqueot your approval of tbbull offolto dlopoool r-y Dur abodule callo for doalgn by tho Co~ of BnglnHro to be COIIplotecl by Auguat 1 1183 wlth conatnactiont-o proceed by Roveaber 15 1913 and coapletion of tbia aource control raMdy by January 1- ltl4 ltu follnwing bulletlonu need to be coapleted to initiate theae activitleas middot middot
middot middot1middot ampn~er into a Superfundmiddot State Contract
2 Develop An InterageneY Agrbullbull-nt with the Corpbull of lngineera for deaign and eo~atructlon aetivitiel
middot middot~
middot middotmiddot c- cmiddot
-middotshyr) The aaauptiona uaad for tha 110ra axtanaiva containment ayataa
option are aa follovaa
bull Double liner ayataa ( aynthatlcclay) bull Leachate collection above each liner bull Clay cap bull Mlnlaua of 10 feat between tha high groundwater and tha botta
of tha waataa middot middot bull Integrated layer of peat between the vaata aatarlal and tha
firat liner to retard tha waata avnt bull No aol141flcatlon of vaataa bull Segregation of aludgaaoil vaata froa the aaaaonal high gr~und
famptar tabla aa follovaa
2 of clay IIA8D
1 of gravel middot-- abull of peat
1 of aaDd middot of undardraln ayatbull1 1
2 bull of clay ayntbetic u r _ bull middot 1 of vnderdrain ayatbull 2 of clayayntbetic liner
10 bull of clean fill middot Bigb grOWidvatec rk) I
The aatlllatad cona for tblo r-r arei U205000 capital jooata U020000 2CI-year prant vcrtb ancl bullbullaooo annual 1 ~ration and tntananca coeu
Tha following tabla la a a-ary of the capital annual I opera~lon and aamplnteraance a~d prceent worth coata for each alternAtlbulle
ALTIUAlIVI middotmiddotmiddot
1 bcabullatlon trea~nt on aite and encapaulatlon 2 ampxcavatlon off-al te middotdlashy
bull pol ancl capping middot 3middot lxcabullation~ 110re
extenalve contaiNMnt
COMMUNITY INVOLVshy
CAPITAL ARNUAL PltiSIIIIT Dill IIORTII
nes4ooo 500 U270000
uosoooo uooo u36oooo
U205000 fiiOOO U020000
Many Queationa were aaked about the effectrvefteaa of aolldlficatlon eapeclally on PCBbull and organic waatea A ampelectaan for the town atated that -only off- a itbull diapoaal would be technically adequate toprotect the underlying aquifer which aerved tha town bulla well (now cloaed) and which will be uaed for a future well alte
---- - c-- - --shy-sshy
-i Be did not believe that the toWn would accept solidification and ~ capping _becauae of the poaaibility that leaching of contaminantbull
could occur in 20 to 30 yeara Be indicated that the town c11d not vlab to rely excluaively on the C011111onwealtha operation and aalntenance becauae in 20 to 30 yeara the political clite middotcould be aignificantly changed Be waa Concerned that any failure of tbe cap or aolidification proceaa would aean an exceaaive burden to the town in years to coae middot middot
Sibullilar concerns vera voiced by aaveral of the residents lgtpresent One abutting property owner stated that abe vaa in 0
favor of On-site encapsulation instead of off-alta disposal 3 because aha did not viah the truck traffic and decontamination z
~procedurebull to potentially dlaflgure her property _ 00
At the aecond public aeetlng fifteen people teatlfled Jgtr -olt
and all bUt one aupported off-al te dlapoaal bullbull the final ruedlal ~ ltmiddotactionmiddot In addition 9 written atatementa were received and 7 aupported off-alte and 2 aupported on alta encapaulatlon without Z aolldlflctlon COplea of the written coenta received are 0bull middot attached and the reglatratlon foraa of the apeakera Tbe public 0
middot ~nta received tended to reiterate four aajor pointas (U that 0
the nature of the alta ltaelf la lllauited for onalte rdyI- -- aO td~goY~~ntetlbea~~~~it~~rr~r vneamp ouppli rCZl tbat oolidiflcatlQn io otill unproven becbnology and in tblo cbull bad bean found not to bind the organlcorUl
that tbere ia a general lack of conftdence in tbe long tem middot
~~l=~lhfbullnd~c=~middot~ir~nad~nance off_-elte diapoaal to another area of tbe country better aulted fo~ aaaardoua wrbulltbull diapoaa~- la tbe 110at reliable deciaion
JtECOIUINDED ACTIO
Sctlon 30068(j) -of the National Contingency Plan (NCP) [47rR 31180 July U ltl3] otatea that the appproprlate extent of redy ahall be deterained by the lead agencybull middotaelection of
the reMdlal alternative which the agency deterair bullbull ia cort shy effective U e the loveat coat alternative that ia technologishy cally feaaible and reliable) and which effectively bullitlgatea and ainibullizea daaage to and providea adequate protection of public health Vlfare or the enviroNMnt Baaed on our evaluation of the coat-t~ffectlveneaa of each of the propoaed alternativeamp the commentbull received froa the public the additional inforaation aupplled by our conaultant in reaponae to the public commentamp received at the flrat bulleating and information received fra the atate we recommend the excAvation tranaport and off-altbull dlapoaal of hazardoua aubatancea and aite capping ampI the aource control remedial _a~tion middot
I I I I
( __
~~
OUr reaaona for thia rec01111endation are that there are phyaical alta characterlatica which lillit true effectiveneaa of aolidification or encapaulation aa the final oneite reiledy TheM llaitationa are a highly fluctuating aeaaonal groundwater table low lying adjacent wetlands and private water walla which drav on the underlying aquifer The reaulta of the aolidification leaching teata ahoved that the organic c011pounda did not bind in the aolidified aaaa With organic concentratione in the hundreda of ppa range middot we believe that encapaulation ia inaiSequate to protect auch a water aenaitlve area The axtanaiva public comaent received in aupport of off-alta dlapoaal for thaae reaaona further juotlfioo tho addltlonll expenditure of fundo for ro100val of 7000 cubic yarda middotof aaterial Alao the additional expenditure prOYidea a auch ore reliable cleanup and eliainatea the potential to further contbulllnate a public water supply
BTATII IIPOT
middotof eat~t~bullui~~~middot~oh0p~~~o=~lbullbullbull Maaaacbu-tta Dlpartent of ampnviroental Quality lnginearino n~nda excavation transport and off-alta dia~al of babullardoua aubetancea middot and alta capping A letter confinling the Statebulla concurrence with thia nc~ndation ia attached
PIIOIOBBD ACTIOII
bull rwqueot your approval of tbbull offolto dlopoool r-y Dur abodule callo for doalgn by tho Co~ of BnglnHro to be COIIplotecl by Auguat 1 1183 wlth conatnactiont-o proceed by Roveaber 15 1913 and coapletion of tbia aource control raMdy by January 1- ltl4 ltu follnwing bulletlonu need to be coapleted to initiate theae activitleas middot middot
middot middot1middot ampn~er into a Superfundmiddot State Contract
2 Develop An InterageneY Agrbullbull-nt with the Corpbull of lngineera for deaign and eo~atructlon aetivitiel
middot middot~
---- - c-- - --shy-sshy
-i Be did not believe that the toWn would accept solidification and ~ capping _becauae of the poaaibility that leaching of contaminantbull
could occur in 20 to 30 yeara Be indicated that the town c11d not vlab to rely excluaively on the C011111onwealtha operation and aalntenance becauae in 20 to 30 yeara the political clite middotcould be aignificantly changed Be waa Concerned that any failure of tbe cap or aolidification proceaa would aean an exceaaive burden to the town in years to coae middot middot
Sibullilar concerns vera voiced by aaveral of the residents lgtpresent One abutting property owner stated that abe vaa in 0
favor of On-site encapsulation instead of off-alta disposal 3 because aha did not viah the truck traffic and decontamination z
~procedurebull to potentially dlaflgure her property _ 00
At the aecond public aeetlng fifteen people teatlfled Jgtr -olt
and all bUt one aupported off-al te dlapoaal bullbull the final ruedlal ~ ltmiddotactionmiddot In addition 9 written atatementa were received and 7 aupported off-alte and 2 aupported on alta encapaulatlon without Z aolldlflctlon COplea of the written coenta received are 0bull middot attached and the reglatratlon foraa of the apeakera Tbe public 0
middot ~nta received tended to reiterate four aajor pointas (U that 0
the nature of the alta ltaelf la lllauited for onalte rdyI- -- aO td~goY~~ntetlbea~~~~it~~rr~r vneamp ouppli rCZl tbat oolidiflcatlQn io otill unproven becbnology and in tblo cbull bad bean found not to bind the organlcorUl
that tbere ia a general lack of conftdence in tbe long tem middot
~~l=~lhfbullnd~c=~middot~ir~nad~nance off_-elte diapoaal to another area of tbe country better aulted fo~ aaaardoua wrbulltbull diapoaa~- la tbe 110at reliable deciaion
JtECOIUINDED ACTIO
Sctlon 30068(j) -of the National Contingency Plan (NCP) [47rR 31180 July U ltl3] otatea that the appproprlate extent of redy ahall be deterained by the lead agencybull middotaelection of
the reMdlal alternative which the agency deterair bullbull ia cort shy effective U e the loveat coat alternative that ia technologishy cally feaaible and reliable) and which effectively bullitlgatea and ainibullizea daaage to and providea adequate protection of public health Vlfare or the enviroNMnt Baaed on our evaluation of the coat-t~ffectlveneaa of each of the propoaed alternativeamp the commentbull received froa the public the additional inforaation aupplled by our conaultant in reaponae to the public commentamp received at the flrat bulleating and information received fra the atate we recommend the excAvation tranaport and off-altbull dlapoaal of hazardoua aubatancea and aite capping ampI the aource control remedial _a~tion middot
I I I I
( __
~~
OUr reaaona for thia rec01111endation are that there are phyaical alta characterlatica which lillit true effectiveneaa of aolidification or encapaulation aa the final oneite reiledy TheM llaitationa are a highly fluctuating aeaaonal groundwater table low lying adjacent wetlands and private water walla which drav on the underlying aquifer The reaulta of the aolidification leaching teata ahoved that the organic c011pounda did not bind in the aolidified aaaa With organic concentratione in the hundreda of ppa range middot we believe that encapaulation ia inaiSequate to protect auch a water aenaitlve area The axtanaiva public comaent received in aupport of off-alta dlapoaal for thaae reaaona further juotlfioo tho addltlonll expenditure of fundo for ro100val of 7000 cubic yarda middotof aaterial Alao the additional expenditure prOYidea a auch ore reliable cleanup and eliainatea the potential to further contbulllnate a public water supply
BTATII IIPOT
middotof eat~t~bullui~~~middot~oh0p~~~o=~lbullbullbull Maaaacbu-tta Dlpartent of ampnviroental Quality lnginearino n~nda excavation transport and off-alta dia~al of babullardoua aubetancea middot and alta capping A letter confinling the Statebulla concurrence with thia nc~ndation ia attached
PIIOIOBBD ACTIOII
bull rwqueot your approval of tbbull offolto dlopoool r-y Dur abodule callo for doalgn by tho Co~ of BnglnHro to be COIIplotecl by Auguat 1 1183 wlth conatnactiont-o proceed by Roveaber 15 1913 and coapletion of tbia aource control raMdy by January 1- ltl4 ltu follnwing bulletlonu need to be coapleted to initiate theae activitleas middot middot
middot middot1middot ampn~er into a Superfundmiddot State Contract
2 Develop An InterageneY Agrbullbull-nt with the Corpbull of lngineera for deaign and eo~atructlon aetivitiel
middot middot~
I I I I
( __
~~
OUr reaaona for thia rec01111endation are that there are phyaical alta characterlatica which lillit true effectiveneaa of aolidification or encapaulation aa the final oneite reiledy TheM llaitationa are a highly fluctuating aeaaonal groundwater table low lying adjacent wetlands and private water walla which drav on the underlying aquifer The reaulta of the aolidification leaching teata ahoved that the organic c011pounda did not bind in the aolidified aaaa With organic concentratione in the hundreda of ppa range middot we believe that encapaulation ia inaiSequate to protect auch a water aenaitlve area The axtanaiva public comaent received in aupport of off-alta dlapoaal for thaae reaaona further juotlfioo tho addltlonll expenditure of fundo for ro100val of 7000 cubic yarda middotof aaterial Alao the additional expenditure prOYidea a auch ore reliable cleanup and eliainatea the potential to further contbulllnate a public water supply
BTATII IIPOT
middotof eat~t~bullui~~~middot~oh0p~~~o=~lbullbullbull Maaaacbu-tta Dlpartent of ampnviroental Quality lnginearino n~nda excavation transport and off-alta dia~al of babullardoua aubetancea middot and alta capping A letter confinling the Statebulla concurrence with thia nc~ndation ia attached
PIIOIOBBD ACTIOII
bull rwqueot your approval of tbbull offolto dlopoool r-y Dur abodule callo for doalgn by tho Co~ of BnglnHro to be COIIplotecl by Auguat 1 1183 wlth conatnactiont-o proceed by Roveaber 15 1913 and coapletion of tbia aource control raMdy by January 1- ltl4 ltu follnwing bulletlonu need to be coapleted to initiate theae activitleas middot middot
middot middot1middot ampn~er into a Superfundmiddot State Contract
2 Develop An InterageneY Agrbullbull-nt with the Corpbull of lngineera for deaign and eo~atructlon aetivitiel
middot middot~
