Wells G&H Superfund Site Southwest Properties (SWP), OU4 July … · 2020-04-02 · Wells G&H...
Transcript of Wells G&H Superfund Site Southwest Properties (SWP), OU4 July … · 2020-04-02 · Wells G&H...
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Wells G&H Superfund Site Southwest Properties (SWP), OU4 July 13, 2017 Agenda: • Proposed Cleanup Plan for Public Review & Comment • Overview of SWP Contamination, Transport and Risk • Proposed Cleanup Plan Process • Cleanup Alternatives & Preferred Cleanup Plan • 30 Day Public Comment Period (7/14/17 thru 8/14/17) • Questions?
EPA Project Manager: Joseph LeMay, P.E. (617) 918-1323 [email protected]
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ROUTES 128/tS
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A
FIGURE 7 SOUTHWEST PROPERTIES
(SWP) LOCATION WITHIN THE WELLS
G&H SUPERFUND SITE
--0 Wells G & H
l Site BoundaryJ
Cl Southwest Properties
~·if Wetland
1,000 2,000 ---===-----Feet source oaia: Ma&5GIS
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Legend 100
- Property Line
200 Feet
FIGURE 1-2 SOUTHWEST PROPERTIES
WOBURN, MA
DATE: 1111612016 DRWN: PROJECT 60312288
SWP = 13.2 acres Murphy Property (4.0 ac) Whitney Property (2.7 ac) Aberjona Property (6.5 ac)
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Wetland Alea Forema SCruD srvu:,
se.a:sona11y PonCleoMa
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\'Vf ltSG& H OOUTHW'EST PROPERTIES
VI06tJRN. MA
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Wetlands known as “Murphy Wetlands” (1.7 acres)
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egend I I! - \\'eG:IIXI
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-- ''"""' +I l •=· 1if
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MURPHY WASiE Olt PROPERTY 250& 252 S31=mSt
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@ Nc:llo( Ol1o hffl Ai)od I- Jt.le .1,1419 (FIRM) illonel 2S011C0407E,. PJta/ltld to, fl• ,,_,_.. E-o,,nc:,M..,-,-,c,;erey. M'l'Ehd.•0. -"•1c.20"' St.pet• 0. $oue.: W...0$ " "' ,_,
\'Vf ltSG& H OOUTHV•'EST PROPERTIES
VI06tJRN. MA
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FJGU'-E l •l ~ IAA FLOOO H,\Z,\RO
FEMA Floodplain
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AECOM
MW.10 NM
...0-.
Measurement Location
. \ \ \
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\ 42.70 • \ \ • BSW.8 \ \ 42.98
\ \
' ' - Southwest Properties --·- Stream/lllott?rbody • Groundwater Bewtion (July 2013)
Line of 6:jual Groundwatu -- Bewtion (feet MSL) (Dashed Vbhere hferred)
~ f'ence
-+- Pailroad Road = = Treatment Cell Sewer Line ••• Wetland Boundary
NM= Not Measured
.ABERJONAAUTO PARTS PROPERTY
""
AB-2M 42.81
•
WELLS G & H WILDWOOD PROPERTY
WOBURN,MA
··.. . ... ··:;; .........
'"' DATE: 11/17/2016 OR\fl/N: PROJECT 60160533
Noties: 1. To be con siSt»? nt w Rh the conceptual
siti-? model br groundwa?r, some data were rejecti-?d in the drawing of gro undw a?r contours, i.e .. --2. NM= Not Measured
FIGURE 3-13 INTER MEDIATE OVER BU RO EN G ROU NO WATER
ELEVATION CONTOURS JU LY 22. 2013
General Groundwater Flow Direction
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OF SOil EXCEEDING LEACHNG TO GROUNDWATER PRGs
Legend - Property Line 0
\VELI.SG& H SOUTHWEST PROPERTIES
WOBURN.MA
FIGURE l~ O'IE'RVIEW OF SOl.
l&=ACTSIJM\JRPHY
Soil Impacts – Murphy Property
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OF LOWER SOIL IMPACTS (GENERALLY <10X PRGs)
HIGHEST lEVEI.S OF voes. METALS, SVOCs AND Pf TICl>ES IN SOIL
AREA WITH HIGHEST LEVEL OF CVOCs IN GROUNDWATER (>100X PRGs)
AECOM Legend
- Property Line .,
"" -WEU.S G &H
SOUTHWEST PROPER'ITES W06URN. W.
FIGURE 1-S OVC.Jtl/lE'N OF SO!L It.FACTS
IJ'NHITNS't
Soil Impacts – Whitney Property
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egend
EZ3CapArea - Property Line
. ·~·· • ..
J lj:s/PEJROLEUM FRACTIONS EXCEEDING LEACHING TO ~OUNDWTE 1'RGs
,.. ,_, WELLSG&H
SOUTHWEST PROPERTIES WOBURN.MA
FIGURE H oveR\'lE'li OF sot. IMPACTS
ATASaJONA
Soil Impacts – Aberjona Property
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"'"" (1) Excavatron a."N& to tie ~ea as part d ~ rtvKGgltlon. (2) NA?l prochlCt or glOOUleS ~ r.oatrng In l'OOf'i.:ortng v,--ei:15 [J) -'4)proX!l'l\T.~ 2 rw, d&OI remo-.'ed as pa,tOf MlrPflY SM-Janmatt.-e (4) Whitney NA.PL area te!TIO'o-ea a$ pa,t or 'MV!ney S'N-3 ar.:ma:-;e
WEUS G& H OOUTHW'EST PROPERTIES
VI06tJRN. >I.A
~ 1~$-14 C~E'PT\..W. Pl.AN FOR NAPL
M.TE.:;;."1\TI\IE IH
NAPL Impacts
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• Bedrock Well CJ Bedrock ExoeedYloes (Dashed 'Mlere lnmed) • lotarnedate'Deep \'li'eU CJlntamedate Exoeedances • Shallow WeU CJSh..lllow Exceedanoes
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275SALEM ST
\'VEUSG &H SOUTHWEST PROPERTIES
WOBURN.ti.A
271SM.EMST
AGU'.:: 1-7 ~RVIEW CF S\\'P.\\\'OE GROUN"1NIJE'A~ CTS
Groundwater Impacts
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LEAD > 3,300 (DEEPER EXCAVATION)
$-1~8~
RES10RE TO OAIONM. CAAOE...V.O REIIE(jEW'E
EXCA.V...TE, 8ACl<ALL TO ME-EXCA.V...~ El.£\II.TION WlH.c.w£N:lEOSOIL.AND
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NOTE. EXCAVATION DETAIL 1 exo,.,,.TIOtW..clO'llLOEPTHIS~Ta.Y 1
FOOTEllCS'T FOR 'OES'ER E)(C.l,),',f,.TJOH" AAEA!I.
CHROMIUM > 1,300 ppm (DEEPER EXCAVATION)
2. 'OEEPER exc ....... noN' AAEA.S EXCA.'AT'E APPOftXlwATELY 2-3 FEET lH ~S Of
I E1.E\Olt'EOCHROM.W,.LEAO,ANDPCflio. -'
!\ ~ -.... ,...
Legend
tii!1 PCS~ EXCEEOAkCE3 l!)X PRG lii!m lEAO EXCEEOANCSS 10.X MG
PCBS > 13 PPM cn ~i=P ~R i=x r.AVATION)
MURPHY WASTE OIL PROPE.=rrY 2SO & 252 SALEM ST
" !O ,~ @ ~ CHROMIUM U CEEOANCSS ,ox F"G e '.N'S.TL.,\NOSAAL=t..e l OC.,,.TION'S excaEOING PRG3
(
c1e.an H O!'$,.amp11ng JOcauons w c:ugr ea ttom ptint maps anc, are approx1nu:: \'Vf ltS G &H
OOUTHW'EST PROPERTIES VI06tJRN. MA
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FIGURE S-15 OONCEPTUAI!. PV.N FOR \\~ T\.AXO
Al.TERNATIVE wn -4 SSONENT/SOIL
Wetland Impacts
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WI-IITNEY B.ARREL PROPERTY
7
n LEGEND:
FUTURE TAI' W"TER ISK TO RESIOBNT
ABERJ0 t'4AAUTO PARTS PROPERTY
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PROPEFm' UNE:
sm EM..! OR RIVER
Wien.ANO l'!OUNOARY
SWP-Wide Groundwater: Tap Water Risk
14Vapor Intrusion evaluation required for new buildings/uses
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FORMER OIL YARD
n
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ABER.JONA AUTO PAR.TS PROPER.TY
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PROPEFm' LINE
sm EAM OR RIVER
'1/ CTLANCI BOUNDARY
Shallow Groundwater Risk
15
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n
'.ill~I ITNEY BARREL PROPERTY ABER.JONA AUTO PARTS l"ROPERTY
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~ SE:OIMENT iillSK TO USKRAT, ~HF!E'/1 ~ SOIL RISK TO SHREW ~ MIO SEOllm/iT OllCA'NIS~S i:;,xx_;:j
FVTURE EDl!!El<T RISK 10 n ESP,o.SSIJR AND REOREATIO AL \llSITOR
PROPERTY LINE
SlREAM ~ · F!IVEI'!
7
Wetland Sediment/Soil Risk
16
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n FU RE SQIL RISK 1•()
. S~ UCTlON \\'ORKER
WHITNIEY BARREL PROP ERTY ABERJONA AUTO PARTS PROPERTY
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PROPEF!lY LINE:
STREAM OR RI\ID?
7
Soil Risk
17
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egend
- wetland
-- Bolding
F•nce
- - Sewe-r Line
--P,q,e<tyLine
-- Road -+-+- Raik'o3d
------ Streams
AECOM
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ecn o,-11.,. ..-..r~ r .. >o .,r,11
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WILDWOOD PROPERTY
\ ' \ \ [ f/N-2 \ \
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u··-:;.::\ .
• lnterrn.etla:e."Deep Oven:iu::IM VI-el
~ Sl\a!Jo"# Ovatlun:ten 'Nell
• 6ecr'Ocl Gl'Ol.l'IO&'ata' Well
'• ..
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A5ERJONA AlJTOF¥.RTS PROP-ERTY 280SalanSt
120 , .. , WEUSG&H SOUTHWEST PROPERTIES
WOBURN. MA
OATE: 2/24.'2015 D."lWN:J.E.8. PROJECT 60312288
·-·- ·'
• LEGEND Representative VOCs
Co-Cio •
Cu-Ctt
Naphthalene •
0 TCE
., ...... cis-1.2-0CE · ... •"
i_ .• • ,'
• For ne ~ voe w.. exceeoanCK no; rroppeo are naprrJ\aiene ai MI.Qhy ana ~ 10 a1 wtir.ney ana Murpny. rnese are generally 51nila to or wrnn arN& &hOWn t>r Cu¼
see T.ltlle 3 tir 116.:& 01 an voe ana app,ca01e pe1r01eum tracoon INCl'llng e.xceeaa'leff oy --f OO!pflnt6 d $011 leactllng PRG exc.eecl31"1Ce$
are Oa&ed on 2011/2013 ~ter resu:15 en:.eea:ng me propo&e(I 9f"Ol.l'IOA'alff PRG6.
Figure 1 - Soil Areas Exceeding the Proposed Soil Leaching PRGs
FS Soil Leaching Model
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Feasibility Study - Nine Criteria • Overall protection of human health and the environment • Compliance with Applicable or Relevant and Appropriate
Requirements (ARARs) • Long-term effectiveness and permanence • Reduction of toxicity, mobility or volume through treatment • Short-term effectiveness • Implementability • Cost • State acceptance • Community acceptance
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-3/SM-3/SA-3 - Soil
Nine Cr iteria Excavat ion, Off-Site Disposal, SW-4/SM-4/ SA-4 - Soil
SW-1/SM-1/SA-1- No SW-2/SM-2/ SA-2 - Capping Capping and Inst itut ional Excavaton, Off-Site Disposal
Act ion and Inst itut ional Cont rols Cont rols and Inst itutional Cont rols
Protects Human Health and the D 00 00 00 Environment
Meets Federal & State D D 00 00 Requirements
Provides Long-Term Protect ion D 0 00 00 Reduces Mobility, Toxicity &
D D 0 0 Volume
Provides Short-Term Protect ion 00 0 0 0 Implementability 00 00 00 00 Cost (millions)
Capital Cost - SW/SM/SA $2.7 $7.5 $16.3
Cont ingency - SW/SM/SA $0 $0.89 $2.1 $4.7
O&M - SW/SM/SA $0.65 $0.76 $0.78
Tota l Cost - SW/SM/SA $4.3 $10.4 $21.9
State Agency Acceptance To be determined after public comment period Community Acceptance To be determined after public comment period
Soil Alternatives
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Legend EZ:ICapArea C Deeper Excavation fmExc..wation - Property Li.ne
~ OVE APPftOXlMATElY 2 FEET C'/"~'!_ REI.ACE WITH CAP SEE FIGURE 5
FOR D~AlLS
EXCAVATE lOAPPROXlMATELY>-15' AND SOil BlEND TO APPROXIMATELY 24' SEE FIGURE5
REMOVE APPROXIMATELY 2 FEET AND RELACE WITH CAP SEE FIGURE 5 FOR DETAILS
/, MOVEAPPROXIMATElY2FEEl AND REl.ACE WITH CAP SEE FIGURE"s FOR Dl;J'AllS
• WCU.SG&H
SOUTHWEST -PROPERTIES VIC6URN, ll'A
-I l!leNlftrGl'll"'eMvet1o;o!e>'lollld ___ jj __
- -I'd.I' i.d.11! ... i,., _.....,.. .,. _ _ ,, • .,....,
ln•~•fo! dnohcl .._On ?.111•1kaibaol.@flll'ld'*"O'\ct-- 'Ml i..!M•......cl
NlodOftc,'..,...,lffV~...So.i.i.i ~ :s. th.-C~"'*"ll>cl'.u»lc1t-. w~ ,r•no-W1e ... ~ o
,ni: OO(l!O,I d .... ,.ev.,. .ai..i,,,,. IMld:,Q ,, :._ vie -'lolln•~-_. __ ""PRCI.
4 'REWOVE~WA1£LY2 FEET'• ~j)'-N llooa -,c,t'--m!!PinhFI....,.,._
Fl~ 1 CONCEPTI.IN. PL,\N .;'~ 8:>'-
6M-l , S '/H & &A•i ALT:i;x.+.lt'/:S
EPA Proposed Soil Alternative: SW/SM/SA-3
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-2 - NAPL Nine Criteria Skimming/Recovery and N-3 - Excavat ion and Off-Site
N-1 - No Act ion Inst itut ional Cont rols Disposal
Protects Human Health and the D 00 00 Environment
Meets Federal & State D 00 00 Requirements
Provides Long-Term Protection D 0 00 Reduces Mobil ity, Toxicity &
D 0 0 Volume
Provides Short-Term Protection 00 0 0 Implementability 00 0 00 Cost (mill ions)
• <.FtpitFt l Cost $0.S4 $7.fi • Contingency
$0 $0.14 $0.66
• O&M $0.09 $0.13 • Total Cost $0.76 $3.4
State Agency Acceptance To be determined after public comment period Community Acceptance To be determined after public comment period
NAPL Alternatives
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(1) Exe.wattoe'I .n-a, to tiermeo as pan ot l)C'e<lKISJ'I WlYKdgJ!lon. ('2) NA?t proauct or 91oouie, 01)61:Ned tloal:fng 1n toori'lOl'!ng w.115 [J) -'4)proXlma::I)' 2:ee; ot&OI ten'IO\'ed as p.lltot Mtrpl'ly SM-3anana1to<e (4) \'Vnltney NA.PL area remo-.-ea as pa,t or 1A'111ney s•N-J ar.:n a:.ve-
\'VfUS G&H SOUTHW'EST PROPERTIES
W06tJRN. W.
: 1~1 CONCE:.=TI..W. ~ FOR NAPL
AI.TE:.o;;N,\TI\IE IH
EPA Proposed NAPL Alternative: N-3
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-3 - Monitored Natural GW-4 - In Situ Biologica l GW-5 - In Situ Chemica l Nine Criteria GW-2 - Institutional Attenuation and Inst itut ional Treatment and Institut ional Oxidation and Inst itut ional GW-6 - Pump and Treat and
GW-1 - No Action Controls Controls Contro ls Controls Institutional Controls
Protects Human Health and the D D D 00 00 00 Environment
Meets Federal & State D D D 00 00 00 Requirements
Provides Long-Term Protection D D D 0 0 00 Reduces Mobility, Toxicity &
D D 0 0 0 00 Volume
Provides Short-Term Protection 00 00 00 00 0 00 Implementability 00 00 00 0 0 00 Cost (millions)
• Capita l Cost $0 $1.1 $5.3 $21.6 $1.8 • Cont ingency
$0 $0 $0.28 $1.7 $5.40 $0.58
• O&M $0.05 $0.05 $0.05 $0.05 $1.8
• Tota l Cost $0.05 $1.5 $7.1 $27.0 $4.2 State Agency Acceptance To be determined after public comment period Community Acceptance To be determined after public comment period
Groundwater Alternatives
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es
1. Plume boundaries defined as where one or more VOCs exceed PRGs. Source removal is assumed ,;is shown.
2.AreasofVOCsimpact.;ibove PRGsare approximate b.;ised on data from existing monitoring well network. The lateral .;ind vertical extent of these ,;ireas will be refaned during pre-design investig.a:ion.
3. Preliminary extraction well ne~work design by EPA 4. Predesign investigation to define tteatment areas
for .;ill COCs. 5. Final extraction well n&tWork to be detennined based
on pumping tests a nd other predesign activities.
@ • Shallow • Intermediate ... Bedrock
W1LDWOOO PROPERTY
ABERJON,\ AUTO PARTS PROPERTY 210 & 2eo saiem st
263SALEMST
275SALEMST
WELLSG&H SOUTHWEST PROPERTIES
WOBURN. MA
feiH OATE: 6.'30/2017 ORVIN: J.E.8. PROJ ECT 60312288
285SALEM
FIGURE3 CONCEPTUAL PLAN FOR GROUNDWATER
ALTERNATIVE GW-6
EPA Proposed Groundwater Alternative: GW-6
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-4 - Shallow Excavation,
Targeted Deeper Excavation, Nine Criteria Off-Site Disposal, Amended
WTL-2 - Monitored WTL-3 - Capping, Wetland Cap, Wetland Restorat ion, WTL-5 - Deep Excavation and
Natural Recovery and M it igation, Monitoring and Monitoring and Institutional Off-Site Disposal, Backfill, and WTL-1 - No Action Institut ional Cont rols Institutional Cont rols Cont rols Wetland Restoration
Protects Human Health and the D D 00 00 00 Environment
Meets Federal & State D D D 00 00 Requirements
Provides Long-Term Protection D D 0 0 00 Reduces Mobility, Toxicity &
D D D 0 0 Volume
Provides Short-Term Protection 00 00 D 0 0 Implementability 00 00 00 00 00 Cost (mill ions)
• Capital Cost $0.15 $0.75 $1.3 $1.5 • Cont ingency
$0 $0.04 $0.24 $0.44 $0.38
• O&M $0.03 $0.05 $0.10 $0.28 • Tota l Cost $0.22 $1.0 $1.9 $2.2
State Agency Acceptance To be determined after public comment period Community Acceptance To be determined after public comment period
Sediment Alternatives
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APPROXfMATE EXCAVATE AND CAP
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REnOR£ TO °"IONA.L ~ A.NO REVEOET--.TE
exe,-.,.-,re_ flA.CKFllL. TO PftE-EXC,1,l,,',f,.TJON £LEV>.TION Y«Tl-l AMENOED SOIL.A.NO
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c:::IApproximate Excavate and RestoreAl'N e Wetland Sample Loe.:ttion Exeeding PRGs
I) Prelininary Remedia'tion Go..lls
fOFiM0R 801Lt~ ~OOM
CO'-ICFitlE OM CRAOE
MURPHY WASTE Ort. PROPE.•nv 2$0-252 SALEM ST
' ·®,· •
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M:IIERJONA....UTO f>,I.R18
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19 78 A OOUIOM
flOOR ORAJM
w-lTNE'I' ...... -259S.lom81
~ 263 SAL-EM ST
a ea1 Haroors saTiping locaticns were dig:tized from print maps and .:tre approxim.1te
WELLSG &. H SOUTI"l'A'EST PROP-ERTIES
WOBURN. MA
PROJECT flC312l85
FJGUR:4 CON~Fl,Nf;c~ WETLMIO
Al!.1'£'-AAT'f\fe WTI.· S
EPA Proposed Sediment Alternative: WTL-5
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l Cos11: Con11:ig,e 1111 ,r,y O&M
A l1te1nm a11:ive ( CO ITI.Sil: 111.1 d i O Ill t Total Cost [conm octiorn"'
lmil ions) (mi imt1s:) (m illions} conti,genc :and o&r · J (m· lio ns:')
SW-3/ S M-3/ SA-3 - So~ I
Excavat jo n1 Off-S~t e $7.5 $2. $0.76 $
Disposal~ Capping and 0.4
~n stitut iona I Cont rol.s
1GW-6 - Pump arn d i r eat $1.8 $0 .58 $1.8 $4.2
an d I rn.stit urti o 11 ail Co rnt r o ls
N-3 - Excav at ion and Off-
Site D i.sposa I [l l $ L S $0.44 $0.13 $.2 .. 3
W i L -5 - Deep E:xcav.ati on
and Off-Si11:e Di :s po.sa t $1.5 $0 .38 $0 .28 $ 2.2
l:iackfil 11 and W etlan d
RestoraUo rn
Ov e ra 11 Cost for Prefer r ed Options I $19.1
Notes
[1) Co.st fo r A.Iter at ive -3 rn as !been adj u.sted down 'i.'Jar d be ca u.se A lt e m ativ e SW-3 in d udes excav atlon
w it h in t he ar ea w her e APL i.s preSse nt on t h e W h it n ev Pirope rtv-
EPA Proposed Cleanup Plan Costs: $19.1 Million
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Questions? • Proposed Plan: http://semspub.epa.gov/src/document/01/599262
• 30 Day Public Comment Period (7/14/17 thru 8/14/17)
EPA Project Manager: Joseph LeMay, P.E. (617) 918-1323 [email protected]
EPA Community Relations Coordinator: Jim Murphy (617) 918-1028 [email protected]