Wells G&H Superfund Site Southwest Properties (SWP), OU4 July … · 2020-04-02 · Wells G&H Superfund Site Southwest Properties (SWP), OU4 July 13, 2017 . Agenda: • Proposed Cleanup

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 lemay.joe@epa.gov

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)

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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

... _ .,.,. = c.pLW ,_ - IWl!o,,d ---- S......Ule --SU..n.\W.1"°'*'

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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. -'

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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

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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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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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. 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

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- wetland

-- Bolding

F•nce

- - Sewe-r Line

--P,q,e<tyLine

-- Road -+-+- Raik'o3d

------ Streams

AECOM

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WILDWOOD PROPERTY

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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 __

- -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

-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>

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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

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f ! t t t 1

j

f

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• + 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 lemay.joe@epa.gov

EPA Community Relations Coordinator: Jim Murphy (617) 918-1028 murphy.jim@epa.gov