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Site Number: |
01LW |
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Contract Number: |
EP-W-08-062 |
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D.O. Number: |
0042 |
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Action Memo Date: |
7/30/2014 |
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Response Authority: |
CERCLA |
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Response Type: |
Time-Critical |
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Response Lead: |
EPA |
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Incident Category: |
Removal Action |
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NPL Status: |
Non NPL |
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Operable Unit: |
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Mobilization Date: |
9/22/2014 |
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Start Date: |
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Demob Date: |
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Completion Date: |
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CERCLIS ID: |
MAN000100746 |
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RCRIS ID: |
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ERNS No.: |
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State Notification: |
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FPN#: |
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Reimbursable Account #: |
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1.1.1 Incident Category
Time Critical Removal Action - see Closure Memorandum July 21/2014
1.1.2 Site Description
The Site is a 0.56-acre portion of 31 Water Street (which consists of an inactive, vacant parcel located along the banks of the Powow and Back Rivers). The majority of the central portion of the 31 Water Street parcel, further defined on the Amesbury Assessors’ Map 53, Lot 103, is level and contains areas with concrete foundation from the former on-site manufacturing building. The parcel is bordered to the north by Water Street, to the west by the City of Amesbury Public Works Department building, to the east by the Back River, and to the south by the Powwow River. The steep slope along the eastern side leading to the Back River has been stabilized with crib work and has several pipes protruding out from the bank. The southernmost portion contains a steep slope to the Powwow River. There is a paved, public walkway/bike path along the eastern and southern borders of the property that is used by the general public.
1.1.2.1 Location
The 31 Water Street Site property is located at 31 Water Street in Amesbury, Essex County,
Massachusetts. The geographic coordinates of the approximate midpoint along the center of 31
Water Street are 42° 51′ 22.1″ north and 70° 55′ 38.5″ west. The property is bordered to the north by Water Street, to the west by the City of Amesbury Public Works Department building, to the east by the Back River, and to the south by the Powow River. It is also defined on the Amesbury Assessors’ Map 53, Lot 103
1.1.2.2 Description of Threat
The presence of Aroclor-1254 at levels up to 740 mg/Kg in soil samples collected by EPA and others indicates that an uncontrolled release of PCBs has occurred at some unknown time in the past at this Site, resulting in contamination to surface and subsurface soils adjacent to the Powwow River and the Back River. The origin, amount and intended use (if any) of Aroclor-1254 at this Site has not been determined, and is likely to remain unknown. PCBs are the primary contaminant of concern at the Site. Elevated levels of lead, arsenic, chromium and petroleum hydrocarbons have also been identified in the soils at the Site and will be addressed in the Removal Action.
1.1.3 Preliminary Removal Assessment/Removal Site Inspection Results
On May 19, 2014, the EPA OSC and contractor personnel mobilized to the property to initiate a Preliminary Assessment/Site Investigation (PA/SI). After visual inspection of the Site and sample location selection by the OSC, a total of thirty-eight soil samples were collected from nine soil boring locations. In addition, six surface soil samples were collected from soils adjacent to waste pipes associated with the Site. The samples were analyzed at the EPA New England Regional Laboratory in Chelmsford, MA for PCBs and metals.
Analytical results indicated that one PCB (Aroclor-1254) was detected in several surface and subsurface soil samples at levels exceeding the MCP Imminent Hazard Level for PCBs of 10 mg/Kg and the EPA Regional Removal Management Levels (RMLs). Also, five metals (arsenic, barium, chromium, lead, and zinc) were detected at concentrations exceeding MCP S-1 standards in one or more of the samples. The lead and arsenic levels also exceeded the EPA RMLs.
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2.1.1 Narrative
On September 22, 2014 the OSC met at the Site with the ERRS contractor Response Manager to conduct a site walk and prepare a site plan. A temporary work trailer was delivered to the site.
2.1.2 Response Actions to Date
The larger site in general has been undergoing environmental investigations since at least the year 2000. Data from the previous work identified elevated levels of volatile organic compounds, total petroleum hydrocarbons, semi-volatile organic compounds and metals. Low levels of PCBs (below 50 mg/Kg) were identified in shallow soils over a large area of the Lower Millyard project and are being addressed by the City with MassDEP regulatory oversight. The removal action area is a small parcel contained on the larger 31 Water Street property which in turn is a segment of the Lower Millyard redevelopment project. The City is referring to the removal action area as the Lower Millyard Riverfront. EPA’s removal action is a separate and distinct effort. In addition to EPA’s 2014 PA/SI findings, the City’s information will serve to help inform the EPA removal action.
There have been no previous EPA response actions to date.
2.1.3 Enforcement Activities, Identity of Potentially Responsible Parties (PRPs)
The City of Amesbury is the current property owner, having aquired the property as a result of non-payment of taxes from the previous owner. No viable PRPs have been identified to date.
2.1.4 Progress Metrics
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