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]
ROUTES 128/tS
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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
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)
egend I I! - \\'eG:IIXI
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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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MW.10 NM
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Measurement Location
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\ 42.70 • \ \ • BSW.8 \ \ 42.98
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' ' - 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
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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
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
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
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
• 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
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
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
FORMER OIL YARD
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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
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'.ill~I ITNEY BARREL PROPERTY ABER.JONA AUTO PARTS l"ROPERTY
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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
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?
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Soil Risk
17
egend
- wetland
-- Bolding
F•nce
- - Sewe-r Line
--P,q,e<tyLine
-- Road -+-+- Raik'o3d
------ Streams
AECOM
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WILDWOOD PROPERTY
\ ' \ \ [ f/N-2 \ \
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• 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
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
-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
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 __
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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
-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
• -.... _ .,_ = ~Lim! , _ _..... ,_llood ----S...., Utt>
--&!•MW.~ - -M
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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
-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
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
-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
I
- R.3il!C'1!d --- - &-v;er L Tt ir ---- ·Het!lrA
@
l •
f ! t t t 1
j
f
I l t
• + I
I 1 t i
APPROXfMATE EXCAVATE AND CAP
SHR!J8UPUN0
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
. RE810RE
EXCA\/ATIQN PEIAU
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t \ I I I t \ I
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Note:
-
- 1
..... -c..
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
' ·®,· •
" IO ,_,
M:IIERJONA....UTO f>,I.R18
'"°"'"" 27M!!OSA.LEMST
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
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
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]
