Final field sampling plan for area 4 of the Camp Edwards impact area groundwater quality study: Massachusetts Military Reservation, Cape Cod, Massachusetts

24 Pages·1997·1 MB·English

1 M
>
FINAL
FIELD SAMPLING PLAN FOR
AREA
4
OF THE
CAMP EDWARDS IMPACT AREA
GROUNDWATER QUALITY STUDY
MASSACHUSETTS MILITARY RESERVATION
CAPE COD, MASSACHUSETTS
>
Prepared for
NATIONAL GUARD BUREAU
ARLINGTON, VIRGINIA
Prepared by
OGDEN ENVIRONMENTAL AND ENERGY SERVICES
239 Littleton Road, Suite IB
Westford, Massachusetts 01886
> L:\MMR\PLAN\FINAL\DFSP4.DOC October6 1997
169
Digitized by the Internet Archive
2013
in
http://archive.org/details/finalfieldsampli04camp
FINAL
FIELD SAMPLING PLAN FOR
AREA
4
OF THE
CAMP EDWARDS IMPACT AREA
GROUNDWATER QUALITY STUDY
MASSACHUSETTS MILITARY RESERVATION
CAPE COD, MASSACHUSETTS
Prepared for
NATIONAL GUARD BUREAU
ARLINGTON, VIRGINIA
Prepared by
OGDEN ENVIRONMENTAL AND ENERGY SERVICES
239 Littleton Road, Suite IB
Westford, Massachusetts 01886
L:\MMR\PLAN\FINAL\DFSP4.DOC October6 1997

Final FSP Area 4
DISCLAIMER:
This document has been prepared pursuant to a government administrative order (U.S. EPA
SDWA
Region I DocketNo. 1-97-1019) and is subject to approval by the U.S. Environmental
Protection Agency. The opinions, findings, and conclusions expressed are those ofthe authors
and not necessarily those ofthe Environmental Protection Agency.
>
L:\MMR\PLAN\FINAL\DFSP4.DOC October6, 1997

Final FSP Area 4
A.6 Area 4 Field Sampling Plan
A.6.1 Background and Focal Area(s)
Area 4 is located on Tank Alley, as indicated in Figure A.6-1. Area 4 consists of two earthen
mounds located just north of Tank Alley where it turns toward the south as seen in aerial
photographs from 1963 to 1991 and Figure A.6-2. These mounds appearto be backstops for targets
that were fired upon from the J-l ranges locatedto the southeast. The mounds are located atthe end
ofthe 2000-meter range for J-l, based on a schematic diagram ofJ-l ranges (see Area 5 FSP). No
targets other than tanks are visible inthis area. The mounds are a focal area.
Additionally, the topographic depression located adjacent to the Tank Alley Road is a focal area. A
1971 aerial photograph indicated that liquid was visible in this depression after significant rain.
Based on interviews, depleted uranium (DU) rounds may have been used by R&D contractors inthe
DU
J-l range in the past because is extremely dense and provides high penetration. Depleted
uranium contains 99.7% U primarily an alpha emitter, and 0.3% U a naturally occurring or
23g 235,
enriched high-energy gamma emitter. IfDU rounds were used in the past there may be alpha and
DU
low energy beta-gamma radiation present in the area, due to fracturing ofthe material.
Two focal areas are identified for Area 4, as indicated in Figure A.6-2:
• the 120x70-foot mound, closest to the road, with an estimated area of0.2 acres and
the 270x100-foot mound, north ofthe road andthe smallermound, with an estimated area of0.6
acres; and
• the topographic depression south ofTank Alley Road and in the vicinity ofthe mounds with an
estimated area of0.1 acre.
&
A.6.2 Sampling Analysis Methods
Area 4 sampling will include surface soil at each ofthe focal areas. Sampling grids for the
mounds will be located at the top ofeach mound, at the toe ofthe slope facing the firing
positions, and between the mounds, since these locations are potential areas for contaminants to
collect via atmospheric deposition or surface water runoff. Grid positions are indicated in Figure
L:\MMR\PLAN\FINAL\DFSP4.DOC 1 October6, 1997

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L:\MMR\PLAN\FINAL\DFSP4.DOC October6, 1997
Final FSP Area 4
itj
DRILL PAD
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GroundwaterFlow
MOUND
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MOUND
Topographic
Depression
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r SoilSampleGrids
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Photograph Locations
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Personnel Carrier
(APC)
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F I G U R E
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Area4 Sampling Points A.6-2
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L:\MMR\PLAN\FINAL\DFSP4.DOC October6. 1997