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MegansettHarbor
SqueteagueHarbor
Red BrookHarbor
HenCove
PocassetHarbor
Phinney's Harbor
Cape Cod Canal
Cape Cod Bay
Wild Harbor
Route
28
Route 151
Route 28
Route 13
0
Route 6
Route 130
Route
28
LongPond
CS-23
J-3
FS-28
CS-10
Quaker Meetinghouse
Rd
L Range
LF-1
!!
MoodyPond
Several FS-12 extraction and reinjection wellsare turned off (not shown at this scale)
J-1
WesternBoundary
CS-21
All SD-5 extractionwells are turned off
AshumetValley
AshumetValley
CS-10CS-10
CS-20
CS-20
Joint Base Cape Cod
Burgoyne Rd
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"S
"S
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FTA-2
PFSA
JohnsPond
Wakeby Pond
MashpeePond
AshumetPond
PetersPond
CoonamessettPond
SnakePond
JenkinsPond
WeeksPond
Crooked Pond
Deep Pond
CS-10LF-1
FS-28
AshumetValley
FS-29
CS-21FS-1
CS-20
FS-12
CS-4
CS-19
LF-1
J-2
Demolition Area 1
Central Impact Area
NorthwestCorner
Demolition Area 2
Gree
nway
RdWood Rd
Jefferson Rd
Barlo
w RdGibbs Rd
Connery Rd
Turpe
ntine
Rd
Frank
Perkin
s Rd
Pew
Rd
Cana
l View
Rd
WS-4
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#
MegansettHarbor
SqueteagueHarbor
Red BrookHarbor
HenCove
PocassetHarbor
Phinney's Harbor
Cape Cod Canal
Cape Cod Bay
Wild Harbor
Route
28
Route 151
Route 28
Route 13
0
Route 6
Route 130
Route
28
LongPond
CS-23
J-3
FS-28
CS-10
Quaker Meetinghouse
Rd
L Range
LF-1
!!
MoodyPond
Several FS-12 extraction and reinjection wellsare turned off (not shown at this scale)
J-1
WesternBoundary
CS-21
All SD-5 extractionwells are turned off
AshumetValley
AshumetValley
CS-10CS-10
CS-20
CS-20
Joint Base Cape Cod
Burgoyne Rd
"S
"S
"S
"S
FTA-2
PFSA
JohnsPond
Wakeby Pond
MashpeePond
AshumetPond
PetersPond
CoonamessettPond
SnakePond
JenkinsPond
WeeksPond
Crooked Pond
Deep Pond
CS-10LF-1
FS-28
AshumetValley
FS-29
CS-21FS-1
CS-20
FS-12
CS-4
CS-19
LF-1
J-2
Demolition Area 1
Central Impact Area
NorthwestCorner
Demolition Area 2
Gree
nway
RdWood Rd
Jefferson Rd
Barlo
w RdGibbs Rd
Connery Rd
Turpe
ntine
Rd
Frank
Perkin
s Rd
Pew
Rd
Cana
l View
Rd
WS-4
Surface water from Long Pond is alsoused as a drinking water source forthe town of Falmouth
Path: Y:\Figures\General\ERC_Plumemap\GIS\20140408\GIS\Arcmap\erc_plumemap_20140410.mxd Date: 6/12/2014 Time: 9:08:37 AM User: 1272479611E
Bourne
Sandwich
Falmouth Mashpee
MCL – Maximum Contaminant LevelMMCL – Massachusetts Maximum Contaminant LevelHA – Federal Lifetime Health AdvisoryGW-1 – State default cleanup value to be used in lieu of site-specific risk-based level10 – EPA level resulting in an excess cancer risk of one in a millionRBC - Site Specific Risk Based Concentration
Chlorinated Solvents Plume - Concentrations Exceed MCLs TCE = 5.0 µg/L PCE = 5.0 µg/LEDB Plume -Concentrations Exceed MMCL = 0.02 µg/LPerchlorate Plume - Concentrations Exceed MMCL = 2.0 µg/L
Town Boundary
Treatment System Pipeline:Infiltration Trench/Gallery
Influent Effluent
Legend
Contaminant of Concern (COC)TCE – trichloroethenePCE – perchloroetheneCCI4 – carbon tetrachlorideEDB – ethylene dibromidebenzenevinyl chloride1,1,2,2-tetrachloroethane1,4-dichlorobenzenemanganesethalliumleadtolueneRDX - hexahydro-1,3,5-trinitro-1,3,5-triazine
perchlorate
Type of Contaminantsolvent solventsolventfuel-related compoundfuel-related compoundsolventsolventsolventmetalmetalmetalfuel-related compoundexplosive
oxidizer
Risk-Based LevelMCL = 5 µg/LMCL = 5 µg/LMCL = 5 µg/LMMCL = 0.02 µg/LMCL = 5 µg/LMCL = 2 µg/LGW-1 = 2 µg/LMCL = 5 µg/LEPA Health Advisory = 300 µg/LMCL = 2 µg/L15 µg/L (treatment technique action level for water distribution systems)MCL = 1,000 µg/LHA = 2 µg/LGW-1 = 1 µg/L10 = 0.6 µg/LHA = 15 µg/LMMCL = 2 µg/L
C5-C8 aliphatic hydrocarbons
The areas of contaminationshow the combined contaminants
of concern within each plume.
Note: ppb = parts per billion andis a measure of concentration.
It is approximately equivalent tomicrograms per liter (µg/L).
Scale: 1 inch = 1 mile
Municipal Water Supply Well#*
RDX Plume - Concentrations exceed EPA 10-6 risk-based level = 0.6 ppb
Extraction Well
"S Treatment Facility
Reinjection Well!!D Extraction Well (Off)
!!D Reinjection Well (Off)Outflow Bubbler
O0 0.5 1
Miles
Plumes with Remedy in Place
Plumes with Interim Remedy in Place
Fuel Plume - The Following Contaminants Exceed AssociatedMCP GW1 or RBC Groundwater Standards:C5-C8 aliphatic hydrocarbons, GW-1 = 300 µg/LC9-C10 aromatic hydrocarbons, GW-1 = 200 µg/LC9-C12 aliphatic hydrocarbons, GW-1 = 700 µg/LC11-C22 aromatic hydrocarbons, GW-1 = 200 µg/L1,2,4-TMB, RBC = 19 µg/L1,3,5-TMB, RBC = 19 μg/L2-methylnaphthalene, GW-1 = 10 µg/L
fuel-related compound GW-1 = 300 µg/LC9-C10 aromatic hydrocarbons fuel-related compound GW-1 = 200 µg/LC9-C12 aliphatic hydrocarbons fuel-related compound GW-1 = 700 µg/LC11-C22 aromatic hydrocarbons fuel-related compound GW-1 = 200 µg/L1,2,4-TMB fuel-related compound RBC = 19 µg/L1,3,5-TMB fuel-related compound RBC = 19 µg/L2-methylnaphthalene fuel-related compound GW-1 = 10 µg/L
Joint Base Cape CodGroundwater Plume Map
Issued June 2014
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