[Federal Register: August 1, 2007 (Volume 72, Number 147)]
[Proposed Rules]
[Page 41976-42001]
[DOCID:fr01au07-32]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 300

[FRL-8447-3]

National Oil and Hazardous Substances Pollution Contingency Plan;
National Priorities List; Partial Deletion of Sites From the Otis Air
National Guard Base/Camp Edwards Superfund Site

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of intent.

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SUMMARY: EPA is announcing its intent to partially delete 61 source
area sites on the Otis Air National Guard Base/Camp Edwards Superfund
Site from the National Priorities List (NPL) and requests public
comment on this action. A source area site is defined by: soil;
structures, if present; and does not include any contaminated
groundwater plume that may be below the site. Otis Air National Guard
Base/Camp Edwards is a Federal Facility Superfund Site known locally as
the Massachusetts Military Reservation (MMR), so this notice will use
MMR as the abbreviation to describe the entire Superfund Site. The
United States Air Force is the lead agency at the MMR Superfund Site.
    EPA bases its proposal to partially delete the 61 source area sites
from the MMR Superfund Site on the determination of EPA and the
Commonwealth of Massachusetts, through the Massachusetts Department of
Environmental Protection (MassDEP), that all appropriate response
actions under the Comprehensive Environmental Response, Compensation,
and Liability Act (CERCLA) have been implemented to protect human
health, welfare, and the environment and that no further response
actions by responsible parties, at these 61 sites, are appropriate.
Based on all investigations completed to date, there are 80 source area
sites at MMR. Upon conclusion of this process, there would be 19 source
area sites remaining. This partial deletion pertains to only the
surface area of sites investigated (and in some cases cleaned-up) for
soil contamination, and does not pertain to any of the 12 groundwater
plumes associated with MMR Superfund Site. All other sites (including
all contaminated groundwater plumes on the Site) not included in this
notice will remain on the NPL. In the northern half of the MMR, there
are source area sites and groundwater plumes associated with an
investigation and cleanup program known as the Impact Area Groundwater
Study Program which is being conducted under the authority of Safe
Drinking Water Act Administrative Orders. These sites and groundwater
plumes are not the subject of this partial deletion proposal.
    The NPL, promulgated pursuant to section 105 of CERCLA, as amended,
is Appendix B of 40 CFR part 300, which is the National Oil and
Hazardous Substances Pollution Contingency Plan (NCP). This partial
deletion of the Otis Air National Guard Base/Camp Edwards Superfund
Site is proposed in accordance with 40 CFR 300.425(e) and the Notice of
Policy Change: Partial Deletion of Sites Listed on the National
Priorities List (60 FR 55466). This action is being proposed by EPA
with the concurrence of the Commonwealth of Massachusetts, through the
MassDEP, because EPA has determined that all appropriate response
actions under CERCLA have been completed and, therefore, further
remedial action pursuant to CERCLA is not appropriate.

DATES: Comments concerning this proposed partial deletion may be
submitted on or before August 31, 2007.

ADDRESSES: Submit your comments identified by Docket ID No. EPA-HQ-
SFUN-1989-0007, by one of the following methods:
     http://www.regulations.gov. Follow the online instructions

for submitting comments.
     E-mail<EMAIL_ADDRESS>     Fax:<PHONE_NUMBER>.
     Mail: Bob Lim, Remedial Project Manager, U.S. EPA. New
England Region, One Congress Street, Suite 1100 (HBT), Boston, MA
02114.
     Hand Delivery: Records Center, One Congress Street, Suite
1100, Boston, MA 02114. Such deliveries are only accepted during the
Docket's normal hours of operation, and special arrangements should be
made for deliveries of boxed information.
    Instructions: Direct your comments to Docket ID No. EPA-HQ-SFUND-
1989-0007. EPA's policy is that all comments received will be included
in the public docket without change and may be available online at
http://www.regulations.gov, including any personal information

provided, unless the comment includes information claimed to be
Confidential Information (CBI) or other information whose disclosure is
restricted by statute. Do not submit information that you consider to
be CBI or otherwise protected through http://www.regulations.gov or e-mail. The http://www.regulations.gov Web site is an ``anonymous

access'' system, which means EPA will not know your identity or contact
information unless you provide it in the body of your comment. If you
send an e-mail comment directly to EPA without going through http://www.regulations.gov
, your e-mail address will be automatically captured

and included as part of the comment that is placed in the public docket
and made available on the Internet. If you submit an electronic
comment, EPA recommends that you include your name and other contact
information in the body of your comment and with any disk or CD-ROM you
submit. If EPA cannot read your comment due to technical difficulties
and cannot contact you for clarification, EPA may not be able to
consider your comment. Electronic files should avoid the use of special
characters, any form of encryption, and be free of any defects or
viruses.
    Docket: All documents in the docket are listed in the http://www.regulations.gov
 index. Although listed in the index, some

information is not publicly available, e.g., CBI or other information
whose disclosure is restricted by statute. Certain other material, such
as copyrighted material, will be publicly available only in hard copy.
Publicly available docket materials are available only in hard copy.
Publicly available docket materials are available either electronically
in http://www.regulations.gov or in hard copy at

the EPA's New England Region Superfund Records Center, One Congress
Street, Suite 1100, Boston, MA 02114 and the Information Repositories
at AFCEE/IRP Office at Building 322 on MMR, by appointment only Monday
through Friday 8 am to 5 pm,<PHONE_NUMBER> ext 1, and the Information
Repositories in the Towns of Bourne, Falmouth, Sandwich, and Mashpee.

FOR FURTHER INFORMATION CONTACT: Bob Lim, Remedial Project Manager,
U.S. Environmental Protection Agency, One Congress Street, Suite 1100
(HBT), Boston, Massachusetts 02114-2023,<PHONE_NUMBER>, Fax (617) 918-
1291, e-mail<EMAIL_ADDRESS>
SUPPLEMENTARY INFORMATION:

Table of Contents

I. Introduction
II. NPL Deletion Criteria
III. Deletion Procedures
IV. Basis for Intent for Partial Site Deletion
    A. Site Histories for Partial Deletion Sites
    1. Investigation Findings for No Action Sites
    2. Investigation Findings and Response Action Summaries
    B. Community Involvement
    C. Current Status

I. Introduction

    EPA is announcing its intent to partially delete 61 source area
sites on the Otis Air National Guard Base/Camp Edwards Superfund Site
from the National Priorities List (NPL) and requests public comment on
this action. A source area site is defined by: Soil; structures, if
present; and does not include any contaminated groundwater plume that
may be below the site. Otis Air National Guard Base/Camp Edwards is a
Federal Facility Superfund Site known locally as the Massachusetts
Military Reservation (MMR), so this notice will use MMR as the
abbreviation to describe the entire Superfund Site. Furthermore to
avoid confusion, this notice will use a lowercase ``s'' when referring
to the individual source area sites and a uppercase ``S'' for the
entire Superfund Site. The United States Air Force through the Air
Force Center for Engineering and Environment (AFCEE) is the lead agency
at the MMR Superfund Site.
    The NPL was promulgated pursuant to section 105 of the
Comprehensive Environmental Response, Compensation, and Liability Act.
EPA identifies sites that appear to present a significant risk to
public health or the environment and maintains the NPL as the list of
those sites. This partial deletion of the 61 sites on the MMR Superfund
Site is proposed in accordance with 40 CFR 300.425(e) and Notice of
Policy Change: Partial Deletion of Sites Listed on the National
Priorities List (60 FR 55466 (Nov. 1, 1995)). EPA will accept comments
on the proposal to delete the 61 sites for thirty (30) days after
publication of this document in the Federal Register.
    EPA and the Massachusetts Department of Environmental Protection
(MassDEP) have determined that remedial action on site soil and, if
present, structures at these clearly defined 61 sites have been
successfully completed. The remaining sites of the MMR Superfund Site
will remain on the NPL (all groundwater, surface water and soil not
contained in these 61 portions (see Table 1)) for remedial
investigation, remedial action, and continued monitoring. MMR occupies
over 22,000 acres of land in portions of the Towns of Bourne, Falmouth,
Mashpee, and Sandwich. MMR was listed on the National Priorities List
in 1989 (CERCLIS ID--MA2570024487).
    A two-party Federal Facility Agreement which was signed in 1991,
and as subsequently amended, requires the Air Force to take the lead on
cleanup activities for Installation Restoration Program sites at MMR.
    The military's Installation Restoration Program (IRP) was
established in 1982 leading to numerous soil and groundwater
investigations and cleanups in the southern, developed southern half of
the base. In addition, the military has extended public water supply
lines into neighborhoods where plumes have affected groundwater
underneath homes which had relied on private wells. To date,
investigations have identified 80 source area sites and 12 groundwater
plumes. Figures and tables supporting this notice are found in separate
appendices in the Deletion Docket. Figure 1 shows all IRP source area
sites and IRP plumes. For more information on the site history and
current news at MMR, visit the program's Web site (http://www.mmr.org).

    This partial deletion proposal pertains to the soil and, if
present, structures at 61 sites ranging in size from half an acre to
80.7 acres. The total proposed area is 482.1 acres. Acreage and
coordinates for each individual site are presented in each site
summary. In addition, the Deletion Docket contains a file with a table
of all sites with the area and coordinates of each site. Table 1
identifies structures as being present with an asterisk next to the
site name and noted in those site summaries. Based on all
investigations completed to date, there are 80 source area sites at
MMR. Upon conclusion of this process, there would be 19 source area
sites remaining. Even though some of the sites appear to be above
contaminated groundwater plumes, this partial deletion does not include
any plumes of contaminated groundwater because data shows that the
sites are not related to the plumes.
    Figure 1 identifies the 12 plumes of contaminated groundwater
associated with MMR Superfund cleanup. They are: Ashumet Valley,
Chemical Spill-4 (CS-4); CS-10; CS-19; CS-20; CS-21; CS-23; Fuel Spill-
1 (FS-1); FS-12; FS-28; FS-29; and Landfill-1. Primary contaminants of
concern in these plumes include solvents (i.e., trichloroethylene,
tetrachloroethylene), fuel components (i.e., ethylene dibromide), and
an explosive compound (i.e., 1,3,5-hexahydro-1,3,5-trinitrotoluene
(RDX)), in the CS-19 plume. There are currently eleven groundwater pump
and treat cleanup remedies for which cleanup on some plumes is expected
to continue for over 25 years. AFCEE currently operates groundwater
cleanup systems for 11 groundwater plumes and treats over 18 million
gallons per day. From 1997 to March 2007, over 32 billion gallons of
contaminated groundwater have been extracted and treated.
    In the northern half of MMR, there is a separate, ongoing
investigation and cleanup program known as the Impact Area Groundwater
Study Program (IAGWSP). These sites and groundwater plumes are not the
subject of this Notice of Intent for Partial Deletion. The authority
for this program is based upon EPA's Safe Drinking Water Act (SDWA)
Program. In February 1997, EPA's New England regional office (EPA New
England) issued SDWA Administrative Order 1-97-1019 (AO1) requiring
investigation of contamination at or emanating from the Training Ranges
and Impact Area upon the sole source aquifer that underlies MMR and
surrounding communities. In May 1997, EPA New England issued SDWA
Administrative Order 1-97-1030 (AO2), which prohibited all live firing
of mortars and artillery, firing of lead from small arms, planned
detonation of ordnance or explosives at or near the Training Ranges and
Impact Area except for UXO activities, and certain other training
related activities. In January 2000, EPA New England issued SDWA
Administrative Order 1-2000-0014 (AO3), which required the IAGWSP to
implement Rapid Response Actions (RRAs) and remedial actions to ``abate
the threat to public health presented by the contamination from past
and present activities and sources at and emanating from the Training
Ranges and Impact Area.'' The Department of the Army is undertaking the
investigation and

cleanup under the Administrative Orders. EPA has issued a total of four
Administrative Orders for investigation and cleanup, and prohibition of
all live fire of munitions, propellants and pyrotechnics, demolition
training, firing of lead from small arms, planned detonation of
ordnance, or explosives except for UXO activities and certain other
training related activities. Figure 1 shows a number of plumes which
have been identified in the IAGWSP investigations. The primary
contaminants of concern in these plumes are 1,3,5-hexahydro-1,3,5-
trinitrotoluene (RDX) and perchlorate, which are mapped to their non-
detect boundary (i.e., 0.35 parts per billion for perchlorate and 0.25
parts per billion for RDX). The MassDEP has promulgated a 2.0 part per
billion groundwater cleanup standard for perchlorate. There is no
promulgated groundwater standard for RDX, but its Health Advisory is
2.0 parts per billion and its risk-based action level for a one-in-
million excess cancer risk probability is 0.6 parts per billion.
    Shown on Figure 1, the IAGWSP plumes of contaminated groundwater
are: Central Impact Area (CIA); Demolition Area 1 (Demo 1); Demo 2; J-1
North; J-2 North; J-2 East; J-3; L-Range; and Northwest Corner. IAGWSP
source area sites are not shown on Figure 1. In 2004 and 2005, short-
term response actions were undertaken to address both soil and
groundwater contamination. Currently, there are temporary groundwater
cleanup systems for Demo 1, J-2 North and J-3 South plumes. For more
information on this program, visit the program's Web site (http://groundwaterprogram.army.mil
).

    The EPA identifies sites that appear to present a significant risk
to public health or the environment and maintains the NPL as the list
of those sites. As described in Sec.  300.425(e)(3) of the NCP, sites
deleted from the NPL remain eligible for remedial actions if conditions
at a deleted site warrant such action.
    Section II of this document explains the criteria for deleting
sites from the NPL. Section III discusses the procedures EPA is using
for this action. Section IV discusses sites in detail, the soil portion
of each of the 61 sites, and explains how each site meets the deletion
criteria.

II. NPL Deletion Criteria

    The National Contingency Plan (NCP) establishes the criteria that
EPA uses to delete sites from the NPL. In accordance with 40 CFR
300.425(e), sites may be deleted from the NPL where no further response
is appropriate to protect public health or the environment. In making
such a determination pursuant to Sec.  300.425(e), EPA will consider,
in consultation with the State, whether the following criteria have
been met:
     300.425(e)(1)(i). Responsible parties or other persons
have implemented all appropriate response actions required; or
     Sec.  300.425(e)(1)(ii). All appropriate Fund-financed
response under CERCLA has been implemented; or
     Sec.  300.425(e)(1)(iii). The remedial investigation has
shown that the release poses no significant threat to public health or
the environment and, therefore, taking of remedial measures is not
appropriate.
    Deletion of a portion of a site from the NPL does not preclude
eligibility for subsequent Fund-financed actions at the area deleted if
future site conditions warrant such actions. Sec.  300.425(e)(3) of the
NCP provides that Fund-financed actions may be taken at sites that have
been deleted from the NPL.
    A partial deletion of a site from the NPL does not affect or impede
EPA's ability to conduct CERCLA response activities at area not deleted
and remaining on the NPL. In addition, deletion of a portion of a site
from the NPL does not affect the liability of responsible parties or
impede agency efforts to recover costs associated with response
efforts.
    In the case of MMR, the selected remedies are protective of human
health and the environment. Two five-year reviews have been conducted
at MMR. Copies are located at the repository previously noted. For
sites with remedies or final decisions, the remedies were deemed
protective, and no information existed to warrant any changes to
protectiveness statements for other sites.

III. Deletion Procedures

    Deletion of the 61 sites on the MMR Superfund Site from the NPL
does not itself create, alter, or revoke any person's rights or
obligations. Deletion of the site from the NPL does not preclude
eligibility for future response actions, NCP Sec.  300.425(e)(3). The
following procedures were used for the proposed deletion of the
following study areas from the MMR Superfund Site:
     EPA has recommended the partial deletion and has prepared
the relevant documents.
     EPA has consulted with the Commonwealth of Massachusetts
on the partial deletion of the sites from the NPL.
     The Commonwealth of Massachusetts concurred with the
partial deletion of the sites from the NPL.
     Concurrent with this national Notice of Intent for Partial
Deletion, a public notice will also appear in a local newspaper.
Additionally, notice has been distributed to appropriate Federal,
State, local officials, and other interested parties. These notices
announce a thirty (30) day public comment period on the deletion
package, which commences on the date of the publication of this
document in the Federal Register and a newspaper of record.
     All relevant documents have been compiled in the site
deletion docket and are available at the information repositories
listed previously.
    Upon completion of the thirty (30) day public comment period for
the deletion of the 61 sites on the MMR Superfund Site, EPA's New
England regional office will accept and evaluate all public comments
received before making a final decision to delete. If necessary, the
Agency will prepare a Responsiveness Summary to address any significant
public comments received. The Responsiveness Summary will be made
available to the public at the information repositories listed
previously (or in the site docket at http://www.regulations.gov). If,

after review of all public comments, EPA determines that the partial
deletion from the NPL is appropriate, EPA will publish a final Notice
of Partial Deletion in the Federal Register. Deletion of the 61 sites
does not actually occur until the final Notice of Partial Deletion is
published in the Federal Register.

IV. Basis for Intent for Partial Site Deletion

A. Site Histories for Partial Deletion Sites

    The following information presents EPA's rationale for deleting the
sites from the MMR Superfund Site. To aid in the understanding of the
61 sites that are the subject of this action, the site history
narratives are organized into two groups, Sections A.1 and A.2. A
summary of the site names are found in Table 1 which is found in a
tables appendix in the Deletion Docket. Section A.1 contains site
narratives where no cleanup action was taken because the investigation
found the site conditions to be protective of both human and the
environment. Section A.2 contains sites where actions (CERCLA and non-
CERCLA actions) have been completed.

1. Investigation Findings for No Action Sites
    The sites in this section have been investigated, but were found to
have no contamination and no CERCLA or non-CERCLA actions have been
taken. Sites with structures that are part of the partial deletion are
noted in the each narrative, if present, and are identified in Table 2
with an asterisk. Table 2 can be found in the tables appendix in the
Deletion Docket. Figures that are referenced in this section can be
found in a figures appendix in the Deletion Document.
    The no action decisions for these 17 sites have been documented in
decision documents called No Further Action Decision Documents. These
documents are jointly signed by representatives from EPA, the Air Force
and the Commonwealth of Massachusetts, and provide investigation
summaries and the conclusion of no action. At MMR and other Federal
Facility Superfund Sites, no action for sites, which have only been
investigated at the preliminary assessment/site inspection (PA/SI)
level of effort and found to require no action, are typically
documented via a No Further Action Decision Document rather than Record
of Decision.
Chemical Spill-5 (U.S. Coast Guard) (CS-5 (CG))
Site Location and History
    CS-5 (CG), U.S. Coast Guard Carpentry Shop, is located in the
Cantonment Area of the MMR, as shown in Figure 4. Its coordinates in
Easting and Northing coordinates (MA State Plane NAD27 feet) are:
856392, 242413; 856587, 242280; 856502, 242170; 856307, 242305; and
856392, 242413. The area CS-5 (CG) proposed for partial deletion
includes all surface soils and structures within these coordinates.
    CS-5 (CG) is a less than one-acre area which featured a carpentry
shop which operated from 1973 to the mid-1990s and housed paint wastes
such as turpentine, thinner, and excess paint.
Investigation and Feasibility Study Activities
    A Phase I Records Search was completed in December 1986. The site
was assessed and found to have no evidence of past disposal or spills
of hazardous substances.
    No feasibility study was conducted since the records search
concluded that the site did not impact the soil and groundwater.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in July 1991.
No risks are present at CS-5 (CG) and no institutional controls are
present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-7 (CS-7)
Site Location and History
    CS-7, Operational Motor Pool (Organizational Maintenance Shops-6),
is located in the Cantonment Area of the MMR, as shown in Figure 5. Its
coordinates in Easting and Northing coordinates (NAD27) are: 863203,
241519; 863318, 241471; 863243, 241297; 863129, 241345; and 863203,
241519. The area CS-7 proposed for partial deletion includes all
surface soils and structures within these coordinates.
    CS-7 is half-acre area which featured a vehicle maintenance shop
which was operated by the Air National Guard from 1966 to 1976. Wastes
were accumulated and eventually transported for off-site disposal, but
any spills would have flowed into the stormwater drainage system.
Currently, Massachusetts Army National Guard vehicles are maintained at
this location.
Investigation and Feasibility Study Activities
    A Phase I Records Search was completed in December 1986. The site
was assessed and found to have no evidence of past disposal or spills
of hazardous substances. Current hazardous waste management practices
were reviewed and found to be adequate in preventing spills and
releases to the environment.
    No feasibility study was conducted since the records search
concluded that the site did not impact the soil and groundwater.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in August 1990.
No risks are present at CS-7 and no institutional controls are present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-7 (U.S. Coast Guard) (CS-7 (CG))
Site Location and History
    CS-7 (CG), U.S. Coast Guard Dry Cleaning Facility, is located in
the Cantonment Area of the MMR, as shown in Figure 4. Its coordinates
in Northing and Easting coordinates (NAD27) are: 859050, 239116;
859086, 239098; 859043, 239010; 859006, 239028; and 859050, 239116. The
area CS-7 (CG) proposed for partial deletion includes all surface soils
and structures within these coordinates.
    CS-7 (CG) is a one tenth of an acre area which featured a dry-
cleaning facility which operated from the mid-1960s to 1975 using a
TCE-containing dry-cleaning compound. The dry-cleaning machines were
reported to have periodically leaked fluid on the floor which had floor
drains that were connected to the base sanitary sewer system.
Investigation and Feasibility Study Activities
    A Phase I Records Search was completed in December 1986. The site
was assessed and found to have no evidence of past disposal or spills
of hazardous substances onto site soil because any leaked or spilled
dry-cleaning fluids would have flowed into the building's floor drains
which are connected to the base sanitary sewer system.
    No feasibility study was conducted since the records search
concluded that the site did not impact the soil and groundwater.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in July 1991.
No risks are present at CS-7 (CG) and no institutional controls are
present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.

Chemical Spill-12 (CS-12)
Site Location and History
    CS-12, Veterans Administration Roads and Grounds Shop, is located
in the Cantonment Area of the MMR, as shown in Figure 4. Its
coordinates in Easting and Northing coordinates (NAD27) are: 851979,
246666; 852048, 246851; 852328, 246750; 852260, 246566; and 851979,
246666. The area CS-12 proposed for partial deletion includes all
surface soils and structures within these coordinates.
    CS-12 is a one-acre area which featured a maintenance shop for the
Veterans Administration which has operated since 1980. All generated
wastes are disposed at an off-site location, but any spills would have
flowed into floor drains which include an oil/water separator and
leaching pit.
    No significant spills of waste petroleum, oil or lubricants;
solvents; herbicides; or pesticides are know to have occurred.
Investigation and Feasibility Study Activities
    A Phase I Records Search was completed in December 1986. The site
was assessed and found to have no evidence of past disposal or spills
of hazardous substances. Investigation indicated no contamination
requiring action. Current hazardous waste management practices were
reviewed and found to be adequate in preventing spills and releases to
the environment.
    No feasibility study was conducted since the records search
concluded that the site did not impact the soil and groundwater.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in July 1991.
No risks are present at CS-12 and no institutional controls are
present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Coal Yard-1 (CY-1)
Site Location and History
    CY-1 is located in the western half of the Cantonment Area of the
MMR, as shown in Figure 4. Its coordinates in Easting and Northing
coordinates (NAD27) are: 855517, 240898; 856096, 240798; 856109,
240882; 856835, 240781; 856662, 240092; 856946, 240284; 855839, 239812;
855260, 239978; and 855517, 240898. The area CY-1 proposed for partial
deletion includes all structures and surface soils within these
coordinates.
    CY-1 is a 24.5-acre former U.S. Army coal storage area which
operated from 1940 to 1957. Coal was unloaded and stockpiled on the
ground surface prior to transport to individual power plants.
Investigation and Feasibility Study Activities
    Since CY-1 had a similar operational history to CY-2 and CY-4,
findings from CY-2 and CY-4 investigations were used to guide the CY-1
investigation. Investigations at CY-2 and CY-4 included: soil borings
and monitoring well installation; surface and subsurface soil samples;
and ash samples. Results from these investigations demonstrated that
coal storages did not cause soil or groundwater contamination. Of the
few detected analytes, all were below action levels.
    The distribution of PAHs at CY-2 suggests that significant leaching
of PAHs from coal storage activities has not occurred. Groundwater data
from CY-2 also confirms that PAHs are not migrating to groundwater. A
groundwater monitoring well at CY-1 was installed in 1998 and found not
to contact any site-related contaminants. Additional surface soil
sampling was conducted at CY-1 in June 2001. Samples were analyzed for
specific metals (i.e, arsenic, chromium, lead, vanadium, and zinc). All
results were below action levels.
    Based on the findings at CY-2 and CY-4, and of additional
investigations at CY-1 and CY-3, no further action was recommended at
CY-1. No feasibility study was conducted since the investigations
concluded that there were no risks to human health and the environment.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in January
2003. No risks requiring action are present at CY-1, and no
institutional controls are present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Coal Yard-3 (CY-3)
Site Location and History
    CY-3 is located in the western half of the Cantonment Area of the
MMR, as shown in Figure 4. Its coordinates in Northing and Easting
coordinates (NAD27) are: 854442, 243657; 855106, 243623; 854977,
243197; 854604, 243197; 854602, 243379; 854454, 243431; and 854442,
243657. The area CY-3 proposed for partial deletion includes all
surface soils within these coordinates.
    CY-3 is a five-acre area which was located at the former VA
hospital steam plant which operated from 1945 to 1972. Coal was stored
on an unbermed, paved pad before transfer to hopper bins. Coal ash was
temporarily stored in a pit before being taken to the on-base landfill.
All stockpiled coal and ash have been removed.
Investigation and Feasibility Study Activities
    Since CY-3 had a similar operational history to CY-2 and CY-4,
findings from CY-2 and CY-4 investigations were used to guide the CY-3
investigation. Investigations at CY-2 and CY-4 included: soil borings
and monitoring well installation; surface and subsurface soil samples;
and ash samples. Results from these investigations demonstrated that
coal storages did not cause soil or groundwater contamination. Of the
few detected analytes, all were below action levels.
    The distribution of PAHs at CY-2 suggests that significant leaching
of PAHs from coal storage activities has not occurred. Groundwater data
from CY-2 also confirms that PAHs are not migrating to groundwater. A
groundwater monitoring well at CY-1 was installed in 1998 and found not
to contact any site-related contaminants. Additional surface soil
sampling was conducted at CY-3 in June 2001. Samples were analyzed for
specific metals (i.e, arsenic, chromium, lead, vanadium, and zinc). All
results were below action levels.
    Based on the findings at CY-2 and CY-4, and of additional
investigations at CY-1 and CY-3, no further action was recommended at
CY-3. No feasibility study was conducted since the investigations
concluded that there were no risks to human health and the environment.

Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in January
2003. No risks requiring action are present at CY-3, and no
institutional controls are present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-2 (U.S. Coast Guard) (FS-2 (CG))
Site Location and History
    FS-2 (CG) is located in the western half of the Cantonment Area of
the MMR, as shown in Figure 4. Its coordinates in Easting and Northing
coordinates (NAD27) are: 856255, 237383; 857124, 237257; 857125,
236889; 856250, 237016, and 856255, 237383. The area FS-2 (CG) proposed
for partial deletion includes all surface soils within these
coordinates.
    FS-2 (CG) is a four-acre area which was a former location of a hot-
mix asphalt plant which operated between 1941 and 1943. It was reported
that asphalt transportation trucks were washed with kerosene or diesel
fuel at an unknown location within the area.
Investigation and Feasibility Study Activities
    A preliminary assessment in 1986 identified FS-2 (CG) as a
potential area of past uncontrolled releases of hazardous substances.
During field investigations between October 1990 and January 1991, and
in 1993, test pits were excavated and surface soil and subsurface soil
samples were collected and analyzed to evaluate site conditions. A
downgradient monitoring well was also installed and sampled. In 1995,
additional soil samples (surface and subsurface) were collected using a
hand-auger and analyzed.
    Soil data and field observations confirmed the presence of the past
asphalt-batching plant and construction debris. Semivolatile compounds
(i.e., those typically found in asphalt) were detected. Inorganics were
sporadically detected above background concentrations. Compounds
observed in soil were not observed in groundwater which is further
indication of no source areas at the site. Human health and ecological
risk was evaluated at the site and indicated that the site did not pose
a risk warranting any action.
    No feasibility study was conducted since a risk evaluation
concluded that there were no risks to human health and the environment.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in February
2000. No risks requiring action are present at FS-2 (CG), and no
institutional controls are present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-3 (FS-3)
Site Location and History
    FS-3, the Johns Pond Fuel Dump Site, is located south of the MMR
boundary, as shown in Figure 5. Its coordinates in Easting and Northing
coordinates (NAD27) are: 865984, 235664; 866044, 235743; 867241,
234840; 867181, 234760; and 865984, 235664. The area FS-3 proposed for
partial deletion includes all structures and surface soils within these
coordinates.
    FS-3 is a three-acre area which consists of a 1,500 foot road
section along Back Road and 50 feet on either side of the road. It was
estimated that between 1955 and 1962, an average of three aircraft
refueler trucks per week each drained 40 gallons of fuel or fuel-
contaminated water onto the shoulders of this road section.
Investigation and Feasibility Study Activities
    A preliminary assessment in 1986 identified FS-3 as a potential
area of past uncontrolled releases of hazardous substances. A site
investigation which included a soil gas survey, soil boring and
monitoring well installation, and collection and analysis of soil and
groundwater samples was conducted in 1988. Soil data showed an absence
of contaminant source areas and were consistent with background values
for inorganics. Fuel-related compounds were not detected in
groundwater. The investigation data supported that there was no
contaminated soil or groundwater from the historical releases.
    No feasibility study was conducted since a risk evaluation
concluded that there were no risks to human health and the environment.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in January
2000. No risks are present at FS-3 and no institutional controls are
present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-15 (FS-15)
    Site Location and History
    FS-15, Runway No. 5, is located in the secure flightline area of
the MMR, as shown in Figure 5. Its coordinates in Easting and Northing
coordinates (NAD27) are: 864651, 238513; 864787, 238949; 865144,
238777; 864832, 238386; and 864651, 238513. The area FS-15 proposed for
partial deletion includes all surface soils within these coordinates.
    FS-15 is a three-acre area which was known as the Runway No. 5 fuel
spill of aviation gasoline. It was reported to have occurred in the
early 1960s when a plane crashed near at the southern end of the runway
by the same name. A significant amount of the fuel was consumed in a
fire.
Investigation and Feasibility Study Activities
    A Phase I Records Search was completed in December 1986. The
records search concluded that there was negligible contaminant
migration into the soil and groundwater because the fire following the
fuel spill consumed the fuel.
    No feasibility study was conducted since the records search
concluded that the spill did not impact the soil and groundwater.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in August 1990.
No risks are present at FS-15 and no institutional controls are
present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.

Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-16 (FS-16)
    Site Location and History
    FS-16, Army Maintenance, Building 2816, is located in the secure
flightline area of the MMR, as shown in Figure 5. Its coordinates in
Easting and Northing coordinates (NAD27) are: 863696, 241715; 863796,
241952; 863998, 241855; 863892, 241627; and 863696, 241715. The area
FS-16 proposed for partial deletion includes all surface soils and
structures within these coordinates.
    FS-16 is a one-acre area which was located outside of Building
2816, the Army Helicopter Maintenance Building, where a tanker truck
spilled approximately 200 gallons of JP-4 in 1982. The spill was washed
off the tarmac and into the surrounding ground.
Investigation and Feasibility Study Activities
    A Phase I Records Search was completed in December 1986. The
records search concluded that there was negligible contaminant
migration into the soil and groundwater because the volume of spilled
fuel was small and it was assumed that a majority of the spilled fuel
volatilized and degraded over time.
    No feasibility study was conducted since the records search
concluded that the spill did not impact the soil and groundwater.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in July 1991.
No risks are present at FS-16 and no institutional controls are
present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-27 (FS-27)
Site Location and History
    FS-27 is located south of the MMR boundary, as shown in Figure 4.
It is three parcels with coordinates in Easting and Northing
coordinates (NAD27). The first parcel's coordinates are: 857983,
238854; 857986, 238536; 857917, 238536; 857918, 238854; and 857983,
238854. The second parcel's coordinates are: 855492, 242421; 855716,
242424; 855716, 242258; 855494, 242260; and 855492, 242421. The third
parcel's coordinates are: 858088, 244484; 859974, 243704; 859949,
243537; 860044, 243382; 860235, 243323; 860326, 243027; 862694, 241938;
861667, 239703; 861660, 239707; 862683, 241932; 860319, 243022; 860229,
243316; 860036, 243377; 859941, 243536; 859966, 243700; 858085, 244476;
854176, 246140; 854023, 245467; 853789, 245026; 853460, 244616; 853187,
244306; 853109, 243761; 853238, 243553; 852968, 243312; 852963, 243318;
853228, 243557; 853100, 243760; 853180, 244310; 853454, 244621; 853782,
245031; 854015, 245469; 854168, 246143; 852475, 246877; 850727, 248013;
850572, 248268; 850170, 249298; 849787, 249779; 849347, 250292; 849095,
250502; 848664, 250713; 848399, 250928; 848404, 250934; 848668, 250720;
849099, 250509; 849353, 250297; 849793, 249784; 850177, 249302; 850580,
248271; 850732, 248020; 852482, 246881; and 858088, 244484. The area
FS-27 proposed for partial deletion includes all surface soils within
these coordinates.
    FS-27 is composed of three areas totaling six acres where soil
excavated during the installation of a fiber-optic cable line along
Connery Avenue, West Hospital Road, North Inner Road, and Generals
Boulevard was stockpiled. The stockpiles were: beneath overhead power
lines off Guenther Road (approximately 1,000 cubic yards); and in an
embankment (approximately 480 cubic yards) behind Building 5202 (the 3-
in-1 Store).
Investigation and Feasibility Study Activities
    Investigation of potential contamination from FS-27 excavated soil
was initiated because petroleum hydrocarbons were detected in March
1990 in soil from the Guenther Road stockpile when it was used as
backfill at another site. A site inspection at FS-27 along the fiber
optic line was conducted in 1993. A remedial investigation of the area
adjacent to Building 5202 was conducted in 1993-1994. A supplemental
investigation was conducted in 1999. Activities included subsurface
soil sampling, installation of monitoring wells, and analyses of soil
and groundwater samples.
    Results from the investigations demonstrated that the soil was not
significantly impacted from site activities. Groundwater samples near
Building 5202 show that the soil is not contaminated and impacting the
groundwater.
    No feasibility study was conducted since a risk evaluation
concluded that there were no risks to human health or the environment.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in May 2001. No
risks are present at FS-27 and no institutional controls are present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Landfill-1 (U.S. Coast Guard) (LF-1 (CG))
    Site Location and History
    LF-1 (CG) is located in the southeastern portion of MMR, as shown
in Figure 5. Its coordinates in Easting and Northing coordinates
(NAD27) are: 866535, 243403; 866639, 242391; 865910, 242353; 865811,
243343; and 866535, 243403. The area LF-1 (CG) proposed for partial
deletion includes all surface soils within these coordinates.
    LF-1 (CG) is a 16-acre area that was used for disposal of asphalt
and debris generated during a runway extension project completed in the
1950s.
Investigation and Feasibility Study Activities
    This site was initially identified in the records search in 1986.
Empty containers and asphalt rubble were observed during a walkover
which was conducted in February 1990. A single downgradient monitoring
well was installed to monitor for potential impact of the site on
groundwater. Groundwater sampling results demonstrated no impact to
groundwater quality.
    No feasibility study was conducted since no contaminants of concern
were identified.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in December
1995. No risks are present at LF-1 (CG) and no institutional controls
are present.

Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Landfill-2 (U.S. Coast Guard) (LF-2 (CG))
Site Location and History
    LF-2 (CG), U.S. Coast Guard Rubble Landfill, is located in the
Cantonment Area of the MMR, as shown in Figure 4. Its coordinates in
Easting and Northing coordinates (NAD27) are: 855740, 242295; 856395,
242984; 856699, 242717; 856038, 242032; and 855740, 242295. The area
LF-(CG) proposed for partial deletion includes all surface soils within
these coordinates.
    LF-2 (CG) is a nine-acre area which was used for the disposal of
asphalt and concrete.
Investigation and Feasibility Study Activities
    A Phase I Records Search was completed in December 1986. The site
was assessed and found to have no evidence of past disposal or spills
of hazardous substances.
    No feasibility study was conducted since the records search
concluded that the site did not impact the soil and groundwater.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in July 1991.
No risks are present at LF-2 (CG) and no institutional controls are
present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Landfill-3 (LF-3)
    Site Location and History
    LF-3 is located in the northeastern edge of MMR, as shown in Figure
3. Its coordinates in Easting and Northing coordinates (NAD27) are:
875410, 267386; 875088, 267242; 874688, 268236; 875009, 268380; and
875410, 267386. The area LF-3 proposed for partial deletion includes
all surface soils within these coordinates.
    LF-3 consists of several piles of sand located along the eastern
edge of a deep, steep sloping kettle depression.
Investigation and Feasibility Study Activities
    In 1985, this unauthorized disposal area was identified from an
adjacent dirt road. It was reported to contain `household items, trash,
construction debris, mattresses, furniture, and brush piles.' No
evidence of hazardous waste (i.e., empty fuel or paint cans, or drums)
was observed.
    On August 6, 1996, representatives from EPA, MassDEP, Army, and
AFCEE conducted a site visit. At the time of the site visit, the area
was observed to be overgrown with trees and shrubs. No evidence of
waste, debris or contamination was visible.
    No feasibility study was conducted since past waste disposal was
determined not hazardous and removed, and then replaced with clean
sand.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in April 1997.
No risks are present at LF-3 and no institutional controls are present.
Response Actions and Cleanup Standards
    In 1985, following the discovery of the unauthorized dumping,
approximately two five-ton dump truck loads of debris was removed in a
non-CERCLA action, and taken to the main base landfill.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Landfill-3 (U.S. Coast Guard) (LF-3 (CG))
Site Location and History
    LF-3 (CG), U.S. Coast Guard Rubble Landfill, is located in the
Cantonment Area of the MMR, as shown in Figure 3. Its coordinates in
Easting and Northing coordinates (NAD27) are: 871815, 259843; 872208,
260744; 872648, 260310; 872235, 259424; and 871815, 259843. The area
LF-3 (USCG) proposed for partial deletion includes all surface soils
within these coordinates. LF-3 (CG) is a 13-acre area which was used
for the disposal of demolition rubble and debris.
    The site received sand and gravel excavated from the construction
of a dispensary building.
Investigation and Feasibility Study Activities
    A Phase I Records Search was completed in December 1986. The site
was assessed and found to have no evidence of past disposal or spills
of hazardous substances.
    No feasibility study was conducted since the records search
concluded that the site did not impact the soil and groundwater.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in July 1991.
No risks are present at LF-3 (CG) and no institutional controls are
present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Landfill-5 (LF-5)
Site Location and History
    LF-5, Rubble Landfill at Veterans Administration Cemetery, is
located in the Cantonment Area of the MMR, as shown in Figure 4. Its
coordinates in Easting and Northing coordinates (NAD27) are: 854089,
245737; 853972, 245339; 853768, 245007; 853211, 245502; 853293, 245758,
and 854089, 245737. The area LF-5 proposed for partial deletion
includes all surface soils within these coordinates.
    LF-5 is a ten-acre area which contained a concrete rubble and
debris fill area.
Investigation and Feasibility Study Activities
    A Phase I Records Search was completed in December 1986. The site
was assessed and found to have no evidence of past disposal or spills
of hazardous substances.
    No feasibility study was conducted since the records search
concluded that the landfill did not impact the soil and groundwater.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in August 1990.
No risks are present at LF-5 and no institutional controls are present.

Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Landfill-6 (LF-6)
Site Location and History
    LF-6, former U.S. Navy Construction Landfill, is located in the
secure flightline area just west of Runway 5, as shown in Figure 5. Its
coordinates in Easting and Northing coordinates (NAD27) are: 865512,
240132; 865654, 240686; 865844, 240664; 865915, 240040, and 865512,
240132.
    The area LF-6 proposed for partial deletion includes all surface
soils within these coordinates.
    LF-6 is a four-acre area which contained a debris and concrete
rubble fill area during expansion of the taxiway area and has been
paved over.
Investigation and Feasibility Study Activities
    A Phase I Records Search was completed in December 1986. The site
was assessed and found to have no evidence of past disposal or spills
of hazardous substances.
    No feasibility study was conducted since the records search
concluded that the landfill did not impact the soil and groundwater.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in August 1990.
No risks are present at LF-6 and no institutional controls are present.
Response Actions and Cleanup Standards
    No response actions have been taken and no cleanup standards have
been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
2. Investigation Findings and Response Action Summaries
    These sites have been investigated and have had actions (CERCLA
and/or non-CERCLA) to reduce and/or eliminate any risk to human health
and environment, and to prevent soil contamination from leaching into
groundwater. Sites with structures that are part of the partial
deletion are noted at the beginning of each of the descriptions. Table
3 which is found in a tables appendix in the Deletion Docket contains a
summary of the site names. There are a total of 44 sites in this group.
Figures showing the location of the following sites are found in the
figures appendix of the Deletion Docket.
Chemical Spill-1 (CS-1)
Site Location and History
    CS-1 is located on North Truck Road, as shown in Figure 4. Its
coordinates in Easting and Northing coordinates (NAD27) are: 864286,
242486; 860657, 244156; 860795, 244472; 861764, 243991; 861854, 244185;
864463, 242886; and 864286, 242486. The area CS-1 proposed for partial
deletion includes all surface soils and existing structures within
these coordinates.
    CS-1 was active from 1941 to 1946, and was a 40-acre vehicle
maintenance site with a motor pool, 11 vehicle maintenance buildings,
and 11 gas stations. Other components of the site included 12 catch
basins located within the paved motor pool areas, 11 leaching wells
associated with the vehicle maintenance buildings, and the fenced
perimeter that received surface runoff from the pavement.
Investigation and Feasibility Study Activities
    A site inspection at CS-1 was conducted in 1993 and led to two
rounds of confirmational sampling in 1995 and 1999. The site inspection
field work consisted of magnetometer surveys, surface and subsurface
soil sampling, monitoring well installation, and groundwater sampling.
    The field work identified two USTs, confirmed removal of USTs near
a taxiway, found metals (beryllium, chromium, lead, nickel, and
thallium) in unfiltered groundwater samples, detected low
concentrations of organic compounds in groundwater samples, and found
contamination in catch basins and vehicle maintenance building leaching
wells. Groundwater sampling in 1995 using the low flow purge and
sampling technique showed that metals were below action levels at the
site and earlier detections were due to suspended particulates. The
site inspection recommended removal of existing USTs, vehicle
maintenance building foundation slabs, work pits and associated soil,
and catch basins. A groundwater sampling event in 1999 confirmed that
there was no organic groundwater contamination present below the site.
    No feasibility study was conducted since response actions in the
form of CERCLA removal actions were conducted as part of the basewide
drainage structure removal program.
Characterization of Risk and Decision Document Findings
    Due to the response actions conducted under the drainage structure
removal program in 1996, a No Further Action Decision Document was
finalized in September 1999. No further risks are present at CS-1 and
no institutional controls are present.
Response Actions and Cleanup Standards
    In 1985 and 1986, nine USTs were removed under non-CERCLA authority
(i.e., no Action Memorandum was issued). In addition, as part of a
basewide drainage structure CERCLA removal program, a total of 49
drainage structures and associated contaminated soil (approximately 900
tons) were removed in 1996. Two 5,000 gallon USTs inside the flight
line area were identified and removed. Excavated soil was transported
to an on-base asphalt batching facility.
    Given its location in an active portion of the MMR, structures
related to airfield activities remain present within the former CS-1
site.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-1 (U.S.Coast Guard) (CS-1 (CG))
    Site Location and History
    Chemical Spill-1 (U.S. Coast Guard) (CS-1 (CG)) is also known as
the U.S. Coast Guard Transmitter Station and is shown in Figure 3. Its
coordinates in Easting and Northing coordinates (NAD27) are: 871486,
261949; 871765, 261814; 871693, 241646; 871825, 261572; 871681, 261267;
871107, 261544; 871292, 261850; 871406, 261794; and 871486, 261949. The
area CS-1 (CG) proposed for partial deletion includes all surface soils
and existing structures within these coordinates.
    CS-1 (CG) occupies a six-acre area where a building, a 4,000-gallon
underground storage tank, and storage sheds are located. Between 1968
and 1975, activities such as disposal of waste solvent on the ground
and burial of used electrical components may have released contaminants
into the environment. Drummed solvents were stored on-site; however the
storage area has since been removed of drums and covered by an addition
to the transmitter building.

Investigation and Feasibility Study Activities
    Site investigations were conducted to characterize the nature and
distribution of contaminants at CS-1 (CG) between 1986 and 1993. A
ground-penetrating radar survey identified anomalies in which
electrical cabinets were found and removed. The SI and RI did not
identify compounds at concentrations indicative of disposal of
hazardous substances.
    No feasibility study was conducted since the site did not pose a
risk.
Characterization of Risk and Decision Document Findings
    The investigations concluded that the site did not pose a risk. A
Record of Decision was finalized in September 1995 and selected no
further action with semi-annual groundwater monitoring for volatile
organic compounds. In July 2004, after several years of monitoring
data, an agreement was reached to cease groundwater monitoring as
concentrations were below any action levels.
    No further risks are present at CS-1 (CG) and no institutional
controls are present.
Response Actions and Cleanup Standards
    No response actions have been conducted, therefore no cleanup
standards have been set.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-2 (CS-2)
Site Location and History
    CS-2 is located in the Cantonment Area of the MMR, as shown in
Figure 5. It is composed of two parcels. Their coordinates in Easting
and Northing coordinates (NAD27) are: 863028, 237328; 863695, 238801;
863882, 238716; 863205, 237242; and 863028, 237328 for parcel A; and
863989, 240813; 864349, 240657; 864097, 240141; 863963, 240203; 864145,
240589; 863929, 240685; and 863989, 240813 for parcel B. The area CS-2
proposed for partial deletion includes all surface soils within these
coordinates.
    CS-2 is a ten-acre area composed of three former motor pools and
subsurface structures associated with a building. Each motor pool which
was active from 1941 to 1946 originally consisted of a vehicle
maintenance building, a gas station with a leaching well, one or two
underground storage tanks, and one or two other buildings.
Investigation and Feasibility Study Activities
    CS-2 was identified as a potential site from a records search which
was conducted in 1986. A sump investigation was conducted in 1991 which
led to a site inspection in 1993 and groundwater sampling in 1999. The
site inspection field work consisted of magnetometer surveys, surface
and subsurface soil sampling, monitoring well installation, and
groundwater sampling focusing on the presence or absence of
contamination associated with the former motor pools and subsurface
structures.
    The site inspection's magnetometer survey confirmed that five USTs
associated with Blocks 2, 4 and 5 were removed. Sampling results for
soil and groundwater did not identify significant organic or metals
contamination from historical uses. A groundwater sampling event in
1999 confirmed that there was no organic or metals contamination as the
results were below action levels.
    No feasibility study was conducted since a CERCLA removal response
action removed drainage structures which were potential contamination
sources, and a risk evaluation determined that there were no risks to
human health or the environment.
Characterization of Risk and Decision Document Findings
    Due to the response actions conducted under the drainage structure
removal program in 1996, a No Further Action Decision Document was
finalized in November 2000. No further risks are present at CS-2 and no
institutional controls are present.
Response Actions and Cleanup Standards
    In the early to mid-1980s, five USTs associated with Blocks 2, 4
and 5 were removed under non-CERCLA authority. In addition, as part of
a CERCLA basewide drainage structure removal program, a total of 18
drainage structures and associated contaminated soil were removed in
1996. Excavated soil was transported to an on-base asphalt batching
facility.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-2 (U.S. Coast Guard) (CS-2 (CG))
    Site Location and History
    CS-2 (CG) is located within the secured flightline area of the MMR,
as shown in Figure 5. The coordinates in Easting and Northing
coordinates (NAD27) are: 866410, 244042; 867591, 244186; 867664,
243676; 867263, 243637; 867313, 243185; 867049, 243157; 867000, 243604;
866463, 243551; and 866410, 244042. The area CS-2 (CG) proposed for
partial deletion includes all surface soils and existing structures
within these coordinates.
    CS-2 (CG) is a 16-acre area which featured U.S. Coast Guard Air
Station Hangars 3170 and 3172, a former auto hobby shop in Building
3161, a former Ground Support Shop in Building 3162, and administrative
facilities in Buildings 3163 and 3164.
Investigation and Feasibility Study Activities
    CS-2 (CG) was investigated several times between 1989 and 1995 with
additional groundwater and sediment sampling in 1999. Investigation
activities included a geophysical survey, soil gas survey, test
pitting, soil borings, installation of monitoring wells, and collection
and analysis of soil and sediment samples. Results of the site
investigations indicated minor releases of fuel, polychlorinated
biphenyls, and inorganic compounds in the area. However, based on the
results of a risk evaluation, unacceptable human health and ecological
risks are not expected from exposures to soil and groundwater.
    No feasibility study was conducted since a CERCLA response action
removed drainage structures which were potential contamination sources,
and a risk evaluation determined that there were no risks to human
health or the environment.
Characterization of Risk and Decision Document Findings
    Due to the response actions conducted under the drainage structure
removal program in 1996, a No Further Action Decision Document was
finalized in November 2000. No further risks are present at CS-2 (CG)
and no institutional controls are present.
Response Actions and Cleanup Standards
    In 1996, a leaching well and leach field associated with Building
3170 were removed in a CERCLA removal action as part of a basewide
drainage structure removal program. A dry well located west of Building
3162 was replaced in 1992 and contaminated sediments were removed. In
April 1993, an 8,000 gallon underground storage tank was removed in a
non-CERCLA action.

Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-3 (CS-3)
Site Location and History
    CS-3, South Truck Road Motor Pool, is located in the southern
portion of the MMR, as shown in Figure 5. Its coordinates in Easting
and Northing coordinates (NAD27) are: 858508, 238559; 858508, 238564;
861531, 237143; 851364, 236782; 860282, 237287; 860004, 236700; 859113,
237123; 859391, 237706; 858339, 238201; and 858508, 238559. The area
CS-3 proposed for partial deletion includes all surface soils and
existing structures within these coordinates.
    CS-3 is a 45-acre area which featured a motor pool which was used
by various agencies (U.S. Army from 1940 to 1946; Air National Guard
Civil Engineering from 1950 to 1973; and U.S. Air Force from 1955 to
1973).
Investigation and Feasibility Study Activities
    Following a preliminary assessment in 1986, CS-3 was investigated
and characterized during two site inspections in 1988 and 1989, and a
groundwater sampling program in 1999. Investigation activities
included: a soil gas survey; excavation of test pits; installation of
test boring and monitoring wells; and soil and groundwater sampling and
analysis. In 1991, sumps at CS-3 were investigated as part of a
basewide investigation program.
    Soil and groundwater sampling detected minimal contamination.
Results of the human health and ecological risk assessments suggest
that unacceptable levels of risk are not anticipated.
    No feasibility study was conducted since response actions in the
form of non-CERCLA and CERCLA removal actions were conducted and the
investigations concluded that the site did not pose a risk to human
health or the environment.
Characterization of Risk and Decision Document Findings
    The risk assessment concluded no significant risk to human health
and environment. A No Further Action Decision Document was finalized in
June 2000. No further risks are present at CS-3 and no institutional
controls are present.
Response Actions and Cleanup Standards
    Several response actions have been conducted at the site. In 1985,
six underground storage tanks were removed in a non-CERCLA action. In
1996, six underground drainage structures were removed in a CERCLA
action, and one was abandoned in place during a base-wide drainage
structural removal program.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-3 (U.S. Coast Guard) (CS-3 (CG))
Site Location and History
    CS-3 (CG) occupies approximately two acres in the south central
portion of the MMR, as shown in Figure 4. Its coordinates in Easting
and Northing coordinates (NAD27) are: 855290, 242137; 855401, 242259;
855631, 242260; 855777, 242169; 855597, 242919; and 855290, 242137. The
area CS-3 (CG) proposed for partial deletion includes all surface soils
and existing structures within these coordinates.
    CS-3 (CG) was the former location of an automobile service and
gasoline station. The site is currently occupied by a gasoline station,
convenience store, and garden shop. Activities that may have introduced
hazardous substances to this area occurred from 1951 to 1979.
Investigation and Feasibility Study Activities
    A records review for CS-3 (CG) was conducted in 1986. A remedial
investigation was conducted during 1991. Surface and subsurface soil
samples were collected from various locations such as former USTs and
the leaching well.
    In both soil and groundwater, there were sporadic detections of
VOCs (1,2-dichloromethane, toluene, xylenes, and ketones), TPH, SVOCs
(i.e., bis-2(ethylhexyl)phthalate, benzo(a)pyrene,
benzo(b)fluoranthene, trimethylbenzenes (in groundwater only)),
pesticides (i.e., chlordane, dichlorodiphenyltrichloroethane (DDT)) and
metals (in groundwater only) (i.e., arsenic, manganese, lead, and
thallium). Since soil and groundwater detections were detected
sporadically and below action levels, it was concluded that widespread
disposal of hazardous waste has not occurred at CS-3 (CG). Considering
that detections were below background concentrations and action levels,
the human health and ecological risk assessments determined that the
site does not pose a risk.
    No feasibility study was conducted since response actions in the
form of non-CERCLA and CERCLA removal actions were conducted and the
remedial investigation concluded that the site did not pose a risk to
human health or the environment.
Characterization of Risk and Decision Document Findings
    The risk assessment concluded no significant risk to human health
and environment. A No Action Record of Decision was finalized in
September 1998. No further risks are present at CS-3 (CG) and no
institutional controls are present.
Response Actions and Cleanup Standards
    In 1985, an underground storage tank was found to be leaking and a
non-CERCLA removal action was conducted to remove the UST and
associated petroleum contaminated soil. In 1994, three former gasoline
USTs were removed in a non-CERCLA action and replaced with aboveground
storage tanks. Approximately 340 cubic yards of contaminated soil was
removed during the UST removal. In 1996, sediment and sludge inside a
leaching well was removed in a CERCLA removal action, however the
leaching well and associated discharge pipes were not removed because
they are partly buried behind Building 5202 and it was determined that
the leaching well and discharge pipes did not pose a future source of
soil and/or groundwater contamination.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-4 (CS-4)
Site Location and History
    Chemical Spill-4 (CS-4) is located in the southern section of the
MMR within the outline of the CS-10 groundwater plume as shown on
Figure 4. CS-4 consists of two parcels whose coordinates in Easting and
Northing coordinates (NAD27) are: 859012, 243969; 859939, 243607;
860065, 243369; 859920, 243079; 859234, 243403; and 859012, 243969 for
parcel A; 858358, 241466; 858018, 241673; 858913, 243535; 859230,
243395; and 858358, 241466 for parcel B. The area CS-4 proposed for
partial deletion includes all surface soils and structures within these
coordinates.

    CS-4 is a 28 acre area to the northeast of West Truck Road and
Gaffney Road which contained a former gasoline station, and is an area
south of Gaffney Road which contained a former storage yard of the
Defense Property Disposal Office which operated from 1965 to 1985.
Military vehicles were maintained by the U.S. Army from 1940 to 1946
and by the U.S. Air Force from 1955 to 1973.
Investigation and Feasibility Study Activities
    Initial investigations in 1986 and 1988 identified petroleum-
related and chlorinated solvent contaminated soil and sediment in the
area known as West Truck Road Motorpool which is South of Truck and
Gaffney Roads. An engineering evaluation/cost analysis report to
address this contaminated soil in the West Truck Road Motorpool area
was prepared in May 1993.
    Investigations for the area to the northeast of West Truck and
Gaffney Roads were conducted in 1994, 1996, and 2001. The investigation
activities included: ten test pits; surface and surface soil samples;
installation of one monitoring well; and groundwater samples.
    Investigations indicated that pesticides and inorganics were
detected in soil and required action. Shallow groundwater sample
results did not indicate contamination requiring action.
    An engineering evaluation/cost analysis report was conducted to
evaluate removal action alternatives to address the contaminated soil
in the area to the northeast of West Truck Road and Gaffney Road.
Characterization of Risk and Decision Document Findings
    A non-time critical removal Action Memorandum for the West Truck
Road Motorpool documented the soil removal and treatment in 1994.
Investigations concluded that soil which was contaminated with volatile
organic compounds had a major source of the CS-4 groundwater plume and
was a continuing threat to the groundwater due to leaching.
    The Site Inspection Report concluded that: dieldrin, chromium,
cadmium, cyanide, lead, and zinc posed a human health and ecological
risk. An Action Memorandum for CS-4 was issued in January 2002.
Response Actions and Cleanup Standards
    By 1984, six 5,000 gallon underground storage tanks were removed in
non-CERCLA actions. In 1994, approximately 11,000 cubic yards (13,235
tons) of contaminated soil from the South Truck Road Motor Pool was
removed in a CERCLA non-time critical removal action. The soil was
treated on-base in a low temperature thermal desorption system. The
removal action cleanup standards were: 0.005 mg/kg for benzene
(leaching to groundwater); 0.005 mg/kg for trichloroethylene (leaching
to groundwater); and 0.005 mg/kg for perchloroethylene (leaching to
groundwater). A removal action report was issued in September 1999.
    In 2002, approximately 2,600 cubic yards of contaminated soil from
the area northeast of West Truck Road and Gaffney Road was removed in a
CERCLA removal action and transported off-site for treatment and/or
disposal. During this removal action, a 500-gallon underground storage
tank with 275 gallons of diesel fuel were discovered and also removed.
The removal action cleanup standards were: 99 mg/kg for Lead
(ecological); 68 mg/kg for Zinc (ecological); 1.0 mg/kg for Arochlor
1260 (human health); 0.227 mg/kg for 4,4'-DDE (ecological); 0.25 mg/kg
for 4,4'-DDT (ecological); 0.035 mg/kg for Dieldrin (ecological); 200
mg/kg for Total Petroleum Hydrocarbons; 1000 mg/kg (0-15 ft bgs)/5,000
mg/kg (greater than 15 ft bgs) for C9-C18
Aliphatic Hydrocarbons; 2,500 mg/kg (0-15 ft bgs)/5,000 mg/kg (greater
than 15 ft bgs) for C19-C36 Aliphatic
Hydrocarbons; 200 mg/kg (0-15 ft bgs)/200 mg/kg (greater than 15 ft
bgs) for C11-C22 Aromatic Hydrocarbons; 100 mg/kg
(0-15 ft bgs)/500 mg/kg (greater than 15 ft. bgs) for C5-
C8 Aliphatic Hydrocarbons; 1,000 mg/kg (0-15 ft bgs)/5,000
mg/kg (greater than 15 ft bgs) for C9-C12
Aliphatic Hydrocarbons; and 100 mg/kg (0-15 ft. bgs)/100 mg/kg (greater
than 15 ft bgs) for C9-C10 Aromatic Hydrocarbons.
The removal action for CS-4 was documented in a removal action report
which was issued in September 2005.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-4 (U.S. Coast Guard)/Fuel Spill-1 (U.S. Coast Guard)
(CS-4 (CG)/FS-1 (CG))
Site Location and History
    Chemical Spill-4 U.S. Coast Guard/Fuel Spill-1 U.S. Coast Guard
(CS-4 (CG)/FS-1 (CG)) is located in the southern section of the MMR, as
shown in Figure 5 within the outline of the CS-10 groundwater plume.
CS-4 (CG)/FS-1 (CG) coordinates in Easting and Northing coordinates
(NAD27) are: 867997, 238955; 868394, 238660; 868369, 238629; 868310,
238672; 868211, 238546; 868145, 238601; 868132, 238555; 867975, 238349;
867671, 238576; and 867997, 238955. The area CS-4 (CG)/FS-1 (CG)
proposed for partial deletion includes all surface soils and structures
within these coordinates.
    CS-4 (CG)/FS-1 (CG) is a five-acre area which featured Hangar
Building 128 and its surrounding area. From 1955 to 1970, Hangar 128
was used to maintain U.S. Air Force EC-121 (i.e., Super-Constellation)
aircraft. During that time, unknown quantities of solvents (i.e.,
toluene and TCE) and aviation gasoline washed into the stormwater
drainage system. From 1976 to 1988, Hangar was used by the USCG to
maintain fixed-wing aircraft. In 1978, two spills occurred at the
hangar. An aviation gasoline spill of approximately 1,000 gallons
occurred on the tarmac on the northern side of the hangar and was
washed into the stormwater drainage system.
    The second aviation gasoline spill of approximately 250 gallons
occurred on the southern side of the hangar and was washed onto
surrounding soil.
Investigation and Feasibility Study Activities
    The site was first investigated in 1993, then in 1995, a follow-up
investigation occurred. The soil and groundwater investigation focused
on the areas of the reported spills and an acid leaching pit on the
western side of the hangar. Groundwater did not require action, however
contaminated soil was recommended for a removal action.
    A site investigation was completed in 1993 and identified
pesticides as the contaminant of concern as there were no herbicides
detected. The investigation activities included: ten test pits; surface
and surface soil samples; installation of one monitoring well; and
groundwater samples.
    Investigations indicated that pesticides and inorganics were
detected in soil and required action. Groundwater sample results did
not indicate contamination requiring action.
    An engineering evaluation/cost analysis was conducted to evaluate
removal action alternatives.
Characterization of Risk and Decision Document Findings
    The Site Inspection Report concluded that: Dieldrin, Chromium,
Cadmium, cyanide, lead, and zinc posed a human health and ecological
risk. A multi-site Action Memorandum with CS-4 (CG)/FS-1 (CG) as one of
the sites was issued in 1999.

Response Actions and Cleanup Standards
    By August 2001, approximately 318 cubic yards of contaminated soil
was excavated and transported off-site for disposal. The removal action
cleanup standards were: 0.035 mg/kg for Dieldrin (ecological); 19 mg/kg
for Chromium (ecological); 1.8 mg/kg for Cadmium (ecological); 1.0 mg/
kg for cyanide (background); 99 mg/kg for lead (ecological); 68 mg/kg
for zinc (ecological). The removal action for CS-4 (CG)/FS-1 (CG) was
documented in a removal action report which was issued in April 2004.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-5 (CS-5)
Site Location and History
    Chemical Spill-5 (CS-5) is located in the Cantonment section of the
MMR, as shown in Figure 4, within the footprint of the CS-10
groundwater plume. CS-5 coordinates in Easting and Northing coordinates
(NAD27) are: 857269, 242122; 857465, 242403; 857647, 242423; 857839,
242306; 857906, 242189; 857850, 242105; 857797, 242082; 857664, 241877;
and 857269, 242122. The area CS-5 proposed for partial deletion
includes all surface soils and structures within these coordinates.
    CS-5 is a five-acre area adjacent to Building 3461 which was used
as a weapons repair shop from 1941 to 1946, and a refueler maintenance
and spray paint shop from 1955 to 1967. Releases from the building's
activities (i.e., oils, solvents, paints, fuel, etc) may be contributed
to site contamination.
Investigation and Feasibility Study Activities
    A soil, sediment, and groundwater investigation was completed in
October 1993. In 1996, as part of a basewide drainage structure removal
program, a leaching well at CS-5 was removed, and a wash rack was
decontaminated and abandoned in place by concrete. Groundwater did not
require action, however contaminated soil was recommended for a removal
action.
    Investigations were conducted in 1993 and 1995, and identified
polychlorinated biphenyl soil contamination which required cleanup.
    A preliminary assessment was completed in 1999 and identified
petroleum-contaminated soil requiring action. In the spring of 2000, a
non-CERCLA removal action was conducted, then the site was further
investigated in 2001.
    Seventeen additional surface soil and subsurface soil samples were
collected at the area of the previous excavation as well as debris
piles at the site. The site investigation and risk evaluation for human
health and ecological risk concluded that a removal action was needed
to address metals, petroleum and polynuclear-aromatic hydrocarbon
contamination. Prior to the removal action, an additional 95 soil
samples were collected at 47 locations.
    An engineering evaluation/cost analysis was conducted to evaluate
removal action alternatives.
Characterization of Risk and Decision Document Findings
    The Site Inspection Report concluded that Benzo(a)anthracene,
Benzo(b)anthracene, Benzo(k)anthracene, Benzo(k)anthracene,
Benzo(g,h,i)anthracene, Benzo(a)pyrene, Chrysene,
Dibenzo(a,h)anthracene, Fluoranthene, Indeno(1,2,3-c,d)pyrene, and
Phenanthrene posed a human health and ecological risk. A multi-site
Action Memorandum with CS-5 as one of the sites was issued in 1999.
Response Actions and Cleanup Standards
    By May 2001, approximately 86 cubic yards of contaminated soil was
excavated and transported off-site for disposal. The removal action
cleanup standards were: 5 mg/kg for Benzo(a)anthracene; 5 mg/kg for
Benzo(b)anthracene; 5 mg/kg for Benzo(k)anthracene; 5 mg/kg for
Benzo(k)anthracene; 5 mg/kg for Benzo(g,h,i)anthracene; 5 mg/kg for
Benzo(a)pyrene; 0.625 mg/kg for Chrysene; 5 mg/kg for
Dibenzo(a,h)anthracene; 7.81 mg/kg for Fluoranthene; 5 mg/kg for
Indeno(1,2,3-c,d)pyrene; and 0.625 mg/kg for Phenanthrene. The removal
action for CS-5 was documented in a removal action report which was
issued in April 2004.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-6/Fuel Spill-22 (CS-6/FS-22)
    Site Location and History
    CS-6/FS-22 is a nine-acre area located in Cantonment area of MMR,
as shown in Figure 4. The coordinates for CS-6 in Easting and Northing
coordinates (NAD27) are: 860916, 237702; 861142, 238157; 861650,
237928; 861426, 237463; and 860916, 237702. The coordinates for FS-22
in Easting and Northing coordinates (NAD27) are: 862327, 247882;
862853, 247110; 862794, 246747; 862334, 247011; 861977, 247666; 861907,
248078; and 862327, 247882. The area CS-6/FS-22 proposed for partial
deletion includes all surface soils and existing structures at CS-6
within these coordinates.
    CS-6/FS-22 includes Building 754 and the area immediately
surrounding it which has been used as a vehicle maintenance shop since
1967.
Investigation and Feasibility Study Activities
    CS-6/FS-22 was identified in a records search in 1986. CS-6
includes structures and features functioned as three waste discharge
points including a former oil/water separator, a leaching well, and
paved areas draining to the drainage structures or site perimeters. FS-
22 is a drainage ditch located south of and adjacent to CS-6 where in
1984 a 4,500 gallon fuel spill resulted in a discharge of fuel to the
drainage ditch.
    Subsurface soil samples were collected during a sump investigation
program and confirmed that the drainage structures have not caused any
soil contamination since results were below action limits. Groundwater
immediately downgradient of these structures was also not impacted.
    A Site Inspection investigation was conducted between November 1992
and March 1993. The investigation included surface soil sampling and
subsurface soil sampling at four areas, and groundwater sampling at
upgradient and downgradient locations. A follow-up investigation was
conducted in October 1994. Additional groundwater sampling in October
1998 supported that the site did not impact groundwater quality.
Sampling in the drainage ditch (FS-22) confirmed the presence of fuel
constituents but concentrations were below action levels.
    No feasibility study was conducted since response actions in the
form of a non-CERCLA spill response and soil removal action,
investigation data, and a tiered human health and ecological risk
evaluation support no further action.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in April 2000.
No risks requiring action are present at CS-6/FS-22 and no
institutional controls are required.

Response Actions and Cleanup Standards
    In 1984, a 4,500 gallon fuel spill occurred in a drainage ditch
associated with FS-22. All free product was removed and visibly
contaminated soil was excavated in a non-CERCLA action. In 1989, piping
between an oil/water separator and a leaching well was sealed. The
leaching well was filled with sand.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-6 (U.S. Coast Guard) (CS-6 (CG))
Site Location and History
    CS-6 (CG) is located in the south-central portion of the MMR, as
shown in Figure 4. Its coordinates in Easting and Northing coordinates
(NAD27) are: 854635, 241470; 854816, 241814; 855350, 241395; 855074,
241085; 855015, 241118; and 854635, 241470. The area CS-6 (CG) proposed
for partial deletion includes all surface soils and existing structures
within these coordinates.
    CS-6 (CG) is a six-acre area which includes U.S. Coast Guard
Building 5215 in which maintenance shops have been housed since 1973.
Prior to 1973, the building was used as a Noncommissioned Officers
Club.
Investigation and Feasibility Study Activities
    CS-6 (CG) was identified in a records search in 1986. CS-6 (CG)
consists of the U.S. Coast Guard Building 5215 which houses maintenance
shops. Wastes generated included oils, hydraulic fluid, and cleaning
solvents. A 2,000 gallon underground storage tank and two aboveground
storage tanks were noted at the site in an investigation in 1989.
    Surface soil results collected in 1989 indicated minor fuel spills
in the area around the former above ground storage tanks. Subsequent
soil sampling in 1999 confirmed that the soil removal was complete.
Groundwater sampling results show that site activities have not
adversely affected the groundwater quality.
    No feasibility study was conducted since response actions in the
form of non-CERCLA removal actions and investigation data support no
further action.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in June 2000.
No further risks are present at CS-6 (CG) and no institutional controls
are present.
Response Actions and Cleanup Standards
    In September 1990, approximately six cubic yards of contaminated
soil was removed in a non-CERCLA action after the removal of two above
ground storage tanks. In May 1993, a 2,000 gallon UST was removed in a
non-CERCLA action.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-8/Fuel Spill-21 (CS-8/FS-21)
Site Location and History
    CS-8/FS-21 are located next to each other in a three-acre area
which is located in the Cantonment portion of the MMR, as shown in
Figure 5. CS-8 coordinates in Easting and Northing coordinates (NAD27)
are: 862819, 237371; 862971, 237301; 862846, 237023; 862693, 237087;
and 862819, 237371. FS-21 coordinates in Easting and Northing
coordinates (NAD27) are: 862970, 237301; 863140, 237224; 862980,
236868; 862813, 236946; and 862970, 237301. The area CS-8/FS-21
proposed for partial deletion includes all surface soils and existing
structures within these coordinates.
    CS-8 is known as the Operational Motor Pool. It included an active
and an abandoned concrete wash pad, a cesspool, and a 12,500 gallon
diesel-fuel UST and pump island located west of a vehicle repair shop.
The vehicle repair shop ceased operations in 1998. FS-21 is the former
location of a 5,000 gallon motor vehicle gasoline UST known as Current
Product Tank No. 90. Wastes generated included waste solvents, oils,
battery electrolyte, and fuels.
Investigation and Feasibility Study Activities
    CS-8/FS-21 was initially identified in a records search in 1986.
Site investigations were developed to evaluate whether past maintenance
activities, waste-disposal methods, and potential leaks from USTs posed
a risk and required action. Investigation efforts, which included a
soil-gas survey, ten test pits, six soil boring, four monitoring wells,
soil samples, and groundwater samples, showed no significant
contamination of soil or groundwater. Investigation confirmed that the
UST removals were complete. Risks to human health and the environment
from exposure to detections were below levels requiring action.
    No feasibility study was conducted since response actions in the
form of non-CERCLA removal actions and investigation data support no
further action.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in October
2000. No risks requiring action are present at CS-8/FS-21, and no
institutional controls are present.
Response Actions and Cleanup Standards
    In 1988, a 5,000 gallon motor vehicle gasoline UST and a 12,500
gallon diesel fuel UST were removed in a non-CERCLA action and replaced
with double-walled tanks of the same size. The 5,000 gallon UST and the
12,500 gallon UST were removed in a non-CERCLA action in 1996 and 1999,
respectively. In 1996, a cesspool was removed in a CERCLA removal
action as part of a basewide drainage structure removal program.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-8 (U.S. Coast Guard) (CS-8 (CG))
Site Location and History
    CS-8 (CG) is located in the northern section of the MMR, as shown
in Figure 3. CS-8 (CG) is a collection of three parcels whose
coordinates in Easting and Northing coordinates (NAD27) are: 871484,
261883; 871510, 261938; 871570, 261911; 871544, 261854; and 871484,
261883 for parcel A; 872536, 261718; 872655, 261718; 872655, 261582;
872536, 261582; and 872536, 261718 for parcel B; 872547, 260877;
872645, 260877; 872645, 260751; 872547, 260751; and 872547, 260877 for
parcel C. The area CS-8 (CG) proposed for partial deletion includes all
surface soils within these coordinates.
    CS-8 (CG) is a less than one-acre area (400 square feet) known as
the Abandoned Radio Cabinet Area on the Coast Guard Transmitter Station
property near the eastern boundary of the MMR.

Investigation and Feasibility Study Activities
    CS-8 (CG) was investigated with a Preliminary Assessment in 1999
and a Site Investigation (SI) in 2001. The SI included the collection
of soil samples which identified soil contamination within the vicinity
of the radio cabinet. Human health and ecological risks were evaluated
and the SI concluded that a removal action was necessary to address
these risks.
    An engineering evaluation/cost analysis was conducted to evaluate
removal action alternatives.
Characterization of Risk and Decision Document Findings
    The Site Inspection Report concluded that cadmium, manganese and
PCB-1254 posed a human health and ecological risk. An Action Memorandum
documenting this non-time critical removal action was finalized in
August 2002.
Response Actions and Cleanup Standards
    In December 2002, approximately 25 cubic yards of contaminated soil
was removed and transported off-site for disposal in a CERCLA removal
action. The removal action cleanup standards were: 1.8 mg/kg for
cadmium; 274 mg/kg for manganese; and 1 mg/kg for PCB-1254 (Arochlor
1254). The removal action for CS-8 (USCG) was documented in a removal
action report which was issued in August 2003.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-9 (CS-9)
Site Location and History
    CS-9 is located in the Cantonment portion of the MMR adjacent to
the Landfill-1 source area, as shown in Figure 4. Its coordinates in
Easting and Northing coordinates (NAD27) are: 856956, 244929; 857918,
246417; 858598, 245943; 858240, 245412; 858123, 245484; 857508, 244681;
and 856956, 244929. The area CS-9 proposed for partial deletion
includes all surface soils within these coordinates.
    CS-9 is a 22-acre area which featured a former motor pool and
vehicle maintenance area which was used from 1941 to 1946 and had five
leaching wells, four sumps, and three underground storage tanks.
Investigation and Feasibility Study Activities
    A site investigation was conducted in 1993. Fifteen test pits were
excavated and stockpiled at a separate site. Soil and sump sediment
samples were collected. Two monitoring wells were installed to evaluate
the groundwater quality. The subsurface soil and groundwater data
indicated that motor pool-related compounds have not migrated
vertically within the site. Groundwater results from the investigation
showed low levels of fuel- and solvent type compounds that are likely
migrating from upgradient LF-1 rather than CS-9. Results of risk
evaluations suggested no unacceptable risks to human health or the
environment.
    No feasibility study was conducted since response actions in the
form of non-CERCLA removal actions and investigation data support no
further action.
Characterization of Risk and Decision Document Findings
    A No Further Action Decision Document was finalized in June 1998.
No further risks are present at CS-9 and no institutional controls are
present.
Response Actions and Cleanup Standards
    Three USTs were removed in a non-CERCLA action in 1985. In March
1994, sump structures and contents, and contaminated soil were removed
in a CERLCA removal action. Approximately 3,663 tons of soil was
treated between August and October 1995 at a low-temperature thermal
treatment unit which was located at MMR for another project.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-11 (CS-11)
Site Location and History
    Chemical Spill-11 (CS-11) is located in the southern section of the
MMR, as shown in Figure 4 within the outline of the CS-10 groundwater
plume. CS-11 coordinates in Easting and Northing coordinates (NAD27)
are: 859381, 238984; 859576, 238898; 859476, 238677; 859280, 238764;
and 859381, 238984. The area CS-11 proposed for partial deletion
includes all surface soils and structures within these coordinates.
    CS-11 is a one-acre area associated with Building 1116 which was
used for the storage and mixing of pesticides and herbicides from 1970
to 1983. Mixing of pesticides occurred on an asphalt concrete pad on
the eastern side of Building 1116.
Investigation and Feasibility Study Activities
    A site investigation was completed in 1993 and identified
pesticides as the contaminant of concern as there were no herbicides
detected. The investigation activities included: Ten test pits; surface
and surface soil samples; installation of one monitoring well; and
groundwater samples. Investigations indicated that pesticides and
inorganics were detected in soil and required action.
    Groundwater sample results did not indicate contamination requiring
action.
    An engineering evaluation/cost analysis was conducted to evaluate
removal action alternatives.
Characterization of Risk and Decision Document Findings
    The Site Inspection Report concluded that: Dieldrin, Chromium,
Cadmium, cyanide, lead, and zinc posed a human health and ecological
risk. A multi-site Action Memorandum with CS-11 as one of the sites was
issued in June 1999.
Response Actions and Cleanup Standards
    In 1983, when the pesticide shop was closed, approximately 200
pounds of pesticides were removed in a non-CERCLA action from Building
1116. In 2002, approximately 1,157 cubic yards of contaminated soil was
removed in a CERCLA removal action and transported off-site for
treatment and/or disposal. The removal action cleanup standards were:
0.035 mg/kg for Dieldrin (ecological); 19 mg/kg for Chromium
(ecological); 1.8 mg/kg for Cadmium (ecological); 1.0 mg/kg for cyanide
(background); 99 mg/kg for lead (ecological); 68 mg/kg for zinc
(ecological). The removal action for CS-11 was documented in a removal
action report which was issued in April 2004.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-14 (CS-14)
Site Location and History
    CS-14 is located in the southeastern portion of MMR within the
secure flightline area, as shown in Figure 5. Its coordinates in
Easting and Northing coordinates (NAD27) are: 867564, 238219; 867679,
238124; 867451, 237847; 867335, 237946; and 867564, 238219. The area
CS-14 proposed for

partial deletion includes all surface soils and structures within these
coordinates.
    CS-14 is a one-acre area associated with subsurface structures
between Building 156 and Hangar 158. These structures received liquid
waste such as solvents and petroleum products from these buildings.
Investigation and Feasibility Study Activities
    CS-14 was identified in a records search as a site requiring
additional investigation based on site history in 1986. Field
investigations were conducted between 1989 and 1992, and additional
groundwater samples were collected in 1999. Investigation activities
included a soil gas survey, installation and multiple sampling of three
groundwater wells, advancement of 12 Terraprobe borings and two test
trenches, and soil sampling and analysis. Exploration locations were
based on the findings of the records search and the observations of
conditions.
    Soil sampling and analysis was conducted during the completion of
test pits, soil borings, and monitoring wells. There were no detections
of surface or subsurface soil samples above action levels for VOCs,
SVOCs, Pesticides, PCBs, and inorganics. Groundwater sampling also did
not identify any actionable contamination as results were below action
levels.
    No feasibility study was conducted since response actions in the
form of a CERCLA removal action were conducted as part of the basewide
drainage structure removal program, and no human health or ecological
risk was identified in a risk evaluation.
Characterization of Risk and Decision Document Findings
    Due to the non-CERCLA response actions and the investigation
findings of no risk, a No Further Action Decision Document was
finalized in June 2000. No further risks are present at CS-14 and no
institutional controls are present.
Response Actions and Cleanup Standards
    In 1996, the leaching pit area was removed in a CERCLA removal
action as part of a basewide drainage structure removal program. The
oil/water separator associated with Hangar 158 and the sand/gas trap
associated with Building 156 was abandoned in 1989. The oil/water
separator was decontaminated in place and filled with concrete.
Building 156 continues to be used as an aircraft parts maintenance
facility with wastes managed according to the appropriate regulations.
Hangar 158 continues to be used as an aircraft maintenance facility.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-15 (CS-15)
Site Location and History
    CS-15, Former Run-up Area, is located on the southeast side of MMR,
on Reilly Road, as shown in Figure 5. Its coordinates in Easting and
Northing coordinates (NAD27) are: 869859, 236971; 870462, 237541;
870880, 237294; 870809, 237171; 870285, 236746; 870193, 236734; 870112,
236759; and 869859, 236971. The area CS-15 proposed for partial
deletion includes all surface soils within these coordinates.
    CS-15 was used for jet engine testing from 1949 until 1985. This
nine-acre site consisted for former Building 202, an outside testing
stand, former Building 204, and enclosed testing stand, and the area
surrounding these buildings.
Investigation and Feasibility Study Activities
    CS-15 was identified in a records search as a site requiring
additional investigation based on site history in 1986. Four field
investigations were conducted between 1989 and 1995, and additional
groundwater samples were collected in April 2000. Exploration locations
were based on the findings of the records search and the observations
of conditions. Three monitoring wells were installed.
    Soil sampling and analysis was conducted during the completion of
test pits, soil borings, and monitoring wells. There were no detections
of surface or subsurface soil samples above action levels for VOCs,
SVOCs, Pesticides, PCBs, and inorganics. Groundwater sampling also did
not identify any actionable contamination.
    No feasibility study was conducted since response actions in the
form of a CERCLA removal actions were conducted as part of the basewide
drainage structure removal program.
Characterization of Risk and Decision Document Findings
    Due to the response actions conducted under the drainage structure
removal program in 1996, a No Further Action Decision Document was
finalized in December 2001. No further risks are present at CS-15 and
no institutional controls are present.
Response Actions and Cleanup Standards
    In 1994, three hanging transformers west of Building 204 were
removed when Buildings 202 and 204 were demolished. In 1996, a gasoline
trap east of Building 204 was removed as part of a CERCLA removal
action known as the basewide drainage structure removal program. During
the removal of the gas trap, approximately 74 cubic yards of
contaminated soil was removed and treated at an on-base asphalt
batching facility. There are no remaining structures at CS-15.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-16/Chemical Spill-17/Drum Disposal Operable Unit (CS-16/
CS-17/DDOU)
Site Location and History
    CS-16/CS-17/DDOU is located in the southern section of the MMR, as
shown in Figure 4. CS-16/CS-17 coordinates in Easting and Northing
coordinates (NAD27) are: 859039, 234905; 860401, 235488; 861416,
235483; 861432, 235364; 862700, 234602; 862795, 234287; 862364, 233663;
and 859039, 234905. The area CS-16/CS-17 proposed for partial deletion
includes all surface soils and structures within these coordinates.
    Drum Disposal Operable Unit (DDOU) is located in the southern
section of the MMR within the boundaries of CS-16/CS-17, as shown in
Figure 4, near the southeastern boundary. DDOU coordinates in Northing
and Easting coordinates (NAD27) are: 862171, 244565; 862239, 234517;
862283, 234583; 862447, 234461; 862328, 234283; 862098, 234456; and
862171, 234565. The area DDOU proposed for partial deletion includes
all surface soils within these coordinates.
    CS-16/CS-17 is an 80-acre area which featured infiltration sand
filter and sludge drying beds which are associated with a former, on-
base sewage treatment plant which was decommissioned in 1997. Treated
effluent from the treatment plant was discharged to these beds and
contamination was suspected to have been caused by discharge of wastes
from on-base operations. The former sewage treatment plant was replaced
with an upgraded plant, and discharge effluent is piped off-site to new
sand filter beds located near the Cape Cod Canal.

    Drum Disposal Operable Unit (DDOU) was a one-acre area where a
total of 11 drums were discovered during investigation activities at
CS-16/CS-17.
Investigation and Feasibility Study Activities
    CS-16/CS-17 was investigated several times beginning with a site
investigation in 1987. This investigation included the collection of
surface soil and sludge samples from the active, inactive and abandoned
sludge drying beds, and the collection of groundwater samples. In 1990,
another site investigation included eleven soil borings with
installation of selected monitoring wells and 31 soil samples.
    In the remedial investigation which was conducted in 1990 and 1994,
CS-16/CS-17 was divided into seven areas for investigation: Active sand
filter beds; inactive sand filter beds; abandoned sand filter beds;
active sludge drying beds; inactive sludge drying beds; abandoned
sludge drying beds; and former sewage sludge disposal area. Surface and
subsurface soil sampling found that three of the seven areas contained
contaminants which posed an ecological risk because of metals
contamination.
    A Feasibility Study was conducted to evaluate remedial action
alternatives which ranged from no action to containment to excavation.
    The DDOU was discovered in 1994 during remedial investigation
activities as CS-16/CS-17. Based on the presences of drums, two surface
soil samples were collected. A separate investigation was conducted and
included 24 shallow soil borings and collection of soil samples for
field screening of pesticides and confirmatory analysis, 4 deep soil
borings as monitoring wells and groundwater samples, ten additional
surface soil samples and groundwater sampling.
    The investigation identified two areas containing DDT in high
concentrations 3,600 mg/kg and 4.1 mg/kg in areas one and two,
respectively. None of the four monitoring wells contained any
detectable concentrations of pesticides. A risk evaluation summary
concluded that site concentrations exceeded risk-based levels and a
removal action was necessary.
    An engineering evaluation/cost analysis for DDOU was conducted to
evaluate removal action alternatives.
Characterization of Risk and Decision Document Findings
    The Remedial Investigation Report for CS-16/CS-17 concluded that:
Arochlor 1254; Dieldrin; Arsenic; chromium; Copper; lead; and Zinc
posed an ecological risk and impact to groundwater risk. A ROD was
issued in May 1999.
    The Site Inspection Report for DDOU concluded that: 2-Chlorophenol;
1,2,4-Trichlorobenzene; 2,4-Dinitrotoluene; pentachlorophenol;
phenanthrene; 4,4'-DDD; 4,4'-DDE; 4,4'DDT; Alpha-BHC; arsenic;
chromium; lead; vanadium; and zinc posed a human health and ecological
risk. A multi-site Action Memorandum with DDOU as one of the sites was
issued in June 1999.
Response Actions and Cleanup Standards
    In 1994, eleven drums were discovered and removed in a non-CERLCA
action at DDOU. In 2002, approximately 213 cubic yards of contaminated
soil was removed in a CERCLA removal action and transported off-site
for incineration. The removal action cleanup standards were: 330 mg/kg
for 2-Chlorophenol (ecological); 9,250 mg/kg for 1,2,4-Trichlorobenzene
(human); 330 mg/kg for 2,4-Dinitrotoluene (human); 800 mg/kg for
pentachlorophenol (human/ecological); 0.625 mg/kg for phenanthrene
(ecological); 2.41 mg/kg for 4,4'-DDD (ecological); 0.227 mg/kg for
4,4'-DDE (ecological); 0.250 mg/kg for 4,4'DDT (ecological); 0.203 mg/
kg for Alpha-BHC (ecological); 7.1 mg/kg for arsenic (ecological); 19
mg/kg for chromium (ecological); 99 mg/kg for lead; 47 mg/kg for
vanadium; and 68 mg/kg for zinc. The removal action for DDOU was
documented in a removal action report which was issued in April 2004.
    In 2001, excavation activities under the CERCLA action authorities
were completed. A total of 4,000 cubic yards of contaminated soil was
removed and transported off-site for disposal. The remedial action
cleanup standards were: 1.00 mg/kg for Arochlor 1254 (ecological);
0.035 mg/kg for Dieldrin (ecological); 7.10 mg/kg for Arsenic
(ecological); 19 mg/kg for chromium (ecological); 61 mg/kg for Copper
(ecological); 99 mg/kg for lead (ecological); and 68 mg/kg for Zinc
(ecological). The remedial action for CS-16/CS-17 was documented in a
remedial action report which was issued in April 2003.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Chemical Spill-22 (CS-22)
Site Location and History
    CS-22 is located in the northern section of the MMR, as shown in
Figure 4. CS-22 coordinates in Easting and Northing coordinates (NAD27)
are: 862327, 247882; 862853, 247110; 862794, 246747; 862334, 247011;
861977, 247666; 861907, 248078; and 862327, 247882. The area CS-22
proposed for partial deletion includes all surface soils within these
coordinates.
    CS-22 is a 13-acre area near the east-central portion of MMR which
was a former sand and gravel pit.
Investigation and Feasibility Study Activities
    A preliminary assessment was completed in 1999 and identified
petroleum-contaminated soil requiring action. In spring 2000, a non-
CERCLA removal action was conducted. The site was further investigated
in 2001.
    Seventeen additional surface soil and subsurface soil samples were
collected at the area of the previous excavation as well as debris
piles at the site. The site investigation and risk evaluation for human
health and ecological risk concluded that a removal action was needed
to address metals, petroleum and polynuclear-aromatic hydrocarbon
contamination. Prior to the removal action, an additional 95 soil
samples were collected at 47 locations.
    An engineering evaluation/cost analysis was conducted to evaluate
removal action alternatives.
Characterization of Risk and Decision Document Findings
    The Site Inspection Report concluded that aluminum, arsenic,
chromium, lead, selenium, benzo(a)anthracene, benzo(a)pyrene,
benzo(b)fluoranthene, dibenz(a,h)anthracene, indeno(1,2,3-c,d)pyrene,
petroleum hydrocarbons, and tetrachloroethylene posed a human health
and ecological risk, and impact to groundwater risk. An Action
Memorandum documenting this non-time critical removal action was
finalized in August 2002.
Response Actions and Cleanup Standards
    In Spring 2000, approximately 418 tons of petroleum contaminated
soil was removed in a non-CERCLA action and transported off-site for
disposal. In 2002, approximately 440 cubic yards of contaminated soil
was removed in a CERCLA removal action and transported off-site for
disposal. The removal action cleanup standards were: 8,900 mg/kg for
aluminum (ecological); 3.6 mg/kg for arsenic (human); 19 mg/kg for
chromium (ecological); 99 mg/kg for lead (ecological); 1.0 mg/kg for
selenium (ecological); 0.7 mg/kg for benzo(a)anthracene (human); 0.625
mg/

kg (0-2 ft bgs) and 0.7 mg/kg (2-15 ft bgs) for benzo(a)pyrene (human/
ecological); 0.7 mg/kg for benzo(b)fluoranthene (human); 0.7 mg/kg for
dibenz(a,h)anthracene (human); 0.7 mg/kg for Indeno(1,2,3,-c,d)pyrene
(human); 200 mg/kg for total petroleum hydrocarbons (human/impact to
groundwater) (Aliphatic--100 mg/kg for C5-C8;
1,000 mg/kg for C9-C12; 1,000 mg/kg for
C13-C18; 2,500 mg/kg for C19-
C36; and Aromatic--100 mg/kg for C9-
C10; and 200 mg/kg for C11-C22); and
10 ug/kg for tetrachloroethylene (impact to groundwater). The removal
action for CS-22 was documented in a removal action report which was
issued in July 2003.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-2 (FS-2)
Site Location and History
    FS-2 is a seven-acre area located in the Cantonment area of the MMR
near its southern boundary, as shown in Figure 4. Its coordinates in
Easting and Northing coordinates (NAD27) are: 856255, 237383; 857124,
237257; 857125, 236889; 857250, 237016; and 856255, 237383. The area
FS-2 proposed for partial deletion includes all surface soils within
these coordinates.
    FS-2 was originally used for unloading and distributing jet fuel
and aviation gasoline. The area contains one main-line railroad track
and several rail sidings. Before decommissioning, the site contained a
petroleum unloading rack, a pump house and associated underground
piping. The unloading facility was taken out of service in 1965.
Investigation and Feasibility Study Activities
    FS-2 was first investigated in 1985 with the excavation of 18 test
pits and installation of two monitoring wells. A soil gas survey and
soil sampling at two test pits and four soil borings were completed in
1989. One monitoring well was installed in each of the four borings.
    Based on the investigations which were conducted in 1985 and 1989,
an RI Report which was issued in 1991 recommended removing contaminated
soil since historical fuel spills had caused near-surface soil stains
and contributed to the petroleum contamination of shallow soil near the
pump house and a monitoring well. A supplemental RI was carried out in
April 2000 to investigate the extent of any remaining petroleum
contamination in the surface and subsurface soil since a non-CERCLA
removal action was conducted in 1996. Petroleum-related semivolatile
organic compounds and metals were detected in soil and groundwater
samples. However, the concentrations were below action levels, and did
not pose a human health or ecological risk.
    No feasibility study was conducted since response actions in the
form of non-CERCLA removal actions were conducted and the supplemental
RI concluded that there were no risks.
Characterization of Risk and Decision Document Findings
    Due to the response action and the supplemental remedial
investigation which concluded that there were no site risks, a No
Further Action Record of Decision was finalized in February 2002.
    No further risks are present at FS-2 and no institutional controls
are present.
Response Actions and Cleanup Standards
    In 1992, the header piping which was part of the fuel distribution
system was removed. In 1996, approximately 520 tons of soil was removed
in a non-CERCLA action, and treated at an on-base low-temperature
thermal treatment system.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-4 (FS-4)
Site Location and History
    FS-4 is located in the Cantonment area of the MMR near its southern
boundary, as shown in Figure 5. Its coordinates in Easting and Northing
coordinates (NAD27) are: 865858, 238266; 866000, 238149; 865712,
237788; 865665, 237768; 865601, 237779; 865481, 237925; and 865858,
238266. The area FS-4 proposed for partial deletion includes all
surface soils within these coordinates.
    FS-4 is a two-acre area around the former Building 178 and a fuel
pumphouse with five underground storage tanks which were located on the
base airfield. From the late 1950s until the early 1970s, aviation
gasoline was pumped to the pumphouse and the tanks from an area known
as the Petroleum Fuels Storage Area.
Investigation and Feasibility Study Activities
    FS-4 was first evaluated as part of a records search in 1985. The
records search identified the presence of underground storage tanks. In
October 1993, a site investigation was conducted which included two
monitoring wells, one soil boring, and 30 soil gas samples. Although
this report recommended no further action, residual fuel contamination
was identified beneath several USTs based on qualitative
photoionization detector results following the removal and upgrade of
the fuel systems at FS-4 in 1994.
    An engineering evaluation/cost analysis was conducted and
alternatives included sampling and subsurface treatment of contaminated
soils by biosparging/soil vapor extraction.
Characterization of Risk and Decision Document Findings
    A multi-site Action Memorandum with FS-4 as one of the sites was
finalized in 1999 and selected subsurface soil sampling to determine if
biosparging/soil vapor extraction was needed to address risks from
contaminants leaching to groundwater. During remedial design, soil
sampling results demonstrated that concentrations of petroleum
hydrocarbons, benzene, toluene, ethylbenzene and xylenes were below
cleanup levels, and installation of the treatment system was
unnecessary. No further risks are present at FS-4 and no institutional
controls are present.
Response Actions and Cleanup Standards
    In 1993, as part of the Fuel Systems Upgrade program, the five
underground storage tanks along with a 25,000 gallon underground
storage tank were removed in a non-CERCLA action.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-7 (FS-7)
Site Location and History
    Fuel Spill-7 (FS-7) is located in the Cantonment section of the
MMR, as shown in Figure 4, within the footprint of the CS-10
groundwater plume. FS-7 coordinates in Easting and Northing coordinates
(NAD27) are: 860315, 243139; 860098, 243122; 860089, 243224; 860287,
243236; and 860315, 243139. The area FS-7 proposed for partial deletion
includes all surface soils within these coordinates.

    FS-7 consisted of a half-acre area in the vicinity of the former
Building 1820. A 500-gallon underground storage tank was installed in
1970 to store No. 2 fuel oil.
Investigation and Feasibility Study Activities
    A site investigation was completed in 1993. Investigation
activities included: soil gas samples; surface and subsurface soil
samples; and installation of one monitoring well. The site
investigation concluded that surface soil was impacted by polynuclear
aromatic hydrocarbons.
    A follow-up investigation was conducted in 1995. Investigation
activities included: test pitting; soil sampling from test pit and
surface soil; installation of two soil borings for monitoring wells;
and groundwater samples. This investigation confirmed the polynuclear
aromatic hydrocarbon contamination and concluded that detections in
groundwater were from another nearby site.
    An engineering evaluation/cost analysis was conducted to evaluate
removal action alternatives.
Characterization of Risk and Decision Document Findings
    The Site Inspection Report concluded that Benzo(a)anthracene,
Benzo(b)anthracene, Benzo(k)anthracene, Benzo(k)anthracene,
Benzo(g,h,i)anthracene, Benzo(a)pyrene, Chrysene,
Dibenzo(a,h)anthracene, Fluoranthene, Indeno(1,2,3-c,d)pyrene, and
Phenanthrene posed a human health and ecological risk. A multi-site
Action Memorandum with FS-7 as one of the sites was issued in 1999.
Response Actions and Cleanup Standards
    In 1985, a 500-gallon underground storage tank was removed in a
non-CERCLA action. In April 2001, approximately 18 cubic yards of
contaminated soil was excavated in a CERCLA removal action and
transported for off-site disposal. The removal action cleanup standards
were: 5 mg/kg for Benzo(a)anthracene; 5 mg/kg for Benzo(b)anthracene; 5
mg/kg for Benzo(k)anthracene; 5 mg/kg for Benzo(k)anthracene; 5 mg/kg
for Benzo(g,h,i)anthracene; 5 mg/kg for Benzo(a)pyrene; 0.625 mg/kg for
Chrysene; 5 mg/kg for Dibenzo(a,h)anthracene; 7.81 mg/kg for
Fluoranthene; 5 mg/kg for Indeno(1,2,3-c,d)pyrene; and 0.625 mg/kg for
Phenanthrene. The removal action for FS-7 was documented in a removal
action report which was issued in April 2004.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-9 (FS-9)
Site Location and History
    Fuel Spill-9 (FS-9) is located in the south central portion of the
MMR, as shown in Figure 4, within the footprint of the CS-10
groundwater plume. FS-9 coordinates in Easting and Northing coordinates
(NAD27) are: 858342, 241473; 858076, 240908; 857678, 241088; 857748,
241225; 858005, 241279; 858146, 241586; and 858342, 241473. The area
FS-9 proposed for partial deletion includes all surface soils and
structures within these coordinates.
    FS-9 is a four-acre area consisting of a motor pool which operated
from 1941 until 1986 and an undeveloped vegetated portion.
Investigation and Feasibility Study Activities
    The site was initially investigated in 1992. In 1998, a remedial
investigation was completed over five areas at FS-9: the motor pool and
fueling island and underground storage tanks; the leaching wells and
catch basins; the waste disposal area; the drainage ditch/swale area;
and the pond/wet area. Total petroleum hydrocarbons and several metals,
chromium, lead, vanadium and zinc, were identified as the contaminants
of concern posing human health and ecological risks.
    A Feasibility Study evaluated alternatives which ranged from no
action to excavation with soil treatment and disposal options.
Characterization of Risk and Decision Document Findings
    The Remedial Investigation Report concluded that total petroleum
hydrocarbons, chromium, lead, vanadium, and zinc posed human health and
ecological risks, and a threat to leaching to groundwater. A Record of
Decision was finalized in June 1999.
Response Actions and Cleanup Standards
    In 1994, three underground storage tanks and associated
contaminated soil were removed in a non-CERCLA action as part of the
Fuel Systems Upgrade Program. In 1996, waste disposal leaching wells
and a catch basin were removed in a CERCLA removal action as part of a
basewide drainage structure removal program. The leaching well adjacent
to Building 1369 was abandoned in place due to structural concerns
relative to the building. In 2001, approximately 125 cubic yards of
contaminated soil was excavated and transported off-site for disposal
which implemented the selected remedy in the Record of Decision. The
remedial action cleanup standards were: 19 mg/kg for chromium
(ecological); 300 mg/kg for lead (human); 47 mg/kg for vanadium
(ecological); 68 mg/kg for zinc (ecological); and petroleum
hydrocarbons (impact to groundwater) (Aliphatic--100 mg/kg for
C5-C8; 1,000 mg/kg for C9-
C12; 1,000 mg/kg for C13-C18; 2,500
mg/kg for C19-C36; and Aromatic--100 mg/kg for
C9-C10; and 200 mg/kg for C11-
C22).
    Sampling during remedial design determined that a contingency
remedy for a soil vapor extraction system was not necessary. The
remedial action for FS-9 was documented in a remedial action report
which was issued in September 2002.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-13 (FS-13)
Site Location and History
    Fuel Spill-13 (FS-13) is known as the Underground Fuel Line
Cantonment and is located in the central portion of the MMR within the
footprint of the CS-10 groundwater plume as shown in Figure 4. FS-13
coordinates in Easting and Northing coordinates (NAD27) are: 860489,
244233; 861055, 243973; 860571, 242911; 860391, 243006; 860283, 243360;
860352, 243494; 860343, 243638; 860260, 243718; and 860489, 244233. The
area FS-13 proposed for partial deletion includes all surface soils
within these coordinates.
    FS-13 is a 13-acre open area bounded by several roads near the main
rotary on base. A small portion of the site, east of the pipeline and
south of North Truck Road extends into the restricted flightline
operations area. A fuel spill was reported in 1972. Approximately 2,000
gallons of JP-4 jet fuel were observed at the ground surface during an
inspection.
Investigation and Feasibility Study Activities
    The site inspection was first conducted in 1996. Investigation
activities included: a soil gas survey; trench excavation and soil
sampling; soil boring completion and sampling; and monitoring well
installation and

sampling. Dieldrin and several metals were detected which led to the
need for additional investigations.
    A supplemental site inspection was conducted in 2004. Investigation
activities concentrated on previous detections in the subsurface. Ten
soil borings were advanced and subsurface soil samples were collected
for analysis. Later that year, additional soil samples were collected.
In April 2005, a test pit was excavated to assess the mobility of
metals and pesticides.
    Risks to human health and the environment, and risk of soil
contaminants leaching to groundwater were evaluated with the remaining
site data. The Supplemental Site Inspection Report concluded that
contaminants detected above screening levels did not pose a risk
because they were at background concentrations or were infrequently
detected.
    No feasibility study was conducted since the Supplemental Site
Inspection Report concluded that the site pose risk to human health,
environment or groundwater.
Characterization of Risk and Decision Document Findings
    The Supplemental Site Inspection Report concluded that did not pose
a human health and ecological risks, and a threat to leaching to
groundwater. A No Further Action Decision Document was finalized in
September 2006.
Response Actions and Cleanup Standards
    In 1972, a non-CERCLA removal action was conducted to remove
contamination from a spill of 2,000 gallons of JP-4 jet fuel from a
pipeline. In April 2005, approximately 14 tons of soil was removed from
a test pit in a non-CERCLA removal action.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-14 (FS-14)
Site Location and History
    FS-14 is located in the northern portion of the MMR as shown in
Figure 3. Its coordinates in Easting and Northing coordinates (NAD27)
are: 866044, 270557; 866268, 270558; 866267, 270300; 866047, 270299;
and 866044, 270557. The area FS-14 proposed for partial deletion
includes all surface soils within these coordinates.
    FS-14 is a one-acre site where a motor vehicle gasoline fuel spill
of approximately 500 gallons occurred in 1985.
Investigation and Feasibility Study Activities
    The site was investigated in 1995 to evaluate any remaining
contamination from the fuel spill. Surface and subsurface soil and
groundwater samples from four newly installed monitoring wells were
collected. An additional round of groundwater samples was collected in
1999, and it was determined that the site did not require any further
action.
    No feasibility study was conducted since response actions in the
form of non-CERCLA removal actions were conducted and the
investigations concluded that the site did not pose a risk to human
health or the environment.
Characterization of Risk and Decision Document Findings
    The risk assessment concluded no significant risk to human health
and environment. A No Further Action Decision Document was finalized in
April 2000. No further risks are present at FS-14 and no institutional
controls are present.
Response Actions and Cleanup Standards
    In 1985, thirty cubic yards of contaminated soil was removed in a
non-CERCLA action immediately following a release of approximately 500
gallons of fuel.
Operation and Maintenance & Five-Year Review
    No operation and maintenance or Five-Year Reviews are required for
this site.
Fuel Spill-17 (FS-17)
Site Location and History
    FS-17 was a three and a half-acre site which is located west of the