United
States Environmental Protection Agency
Region I
POLLUTION REPORT
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Date: |
Wednesday, September 2, 2009
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From: |
Mike Barry, OSC
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Subject:
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Final POLREP
Aranco Tanker Rollover
Rt 95 North Bound,
Newburyport, MA
Latitude: 42.8275000 Longitude: -70.9158000
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POLREP No.: |
5
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Site #:
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Z1BY
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Reporting Period: |
7/9 to 9/2/2009
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D.O. #:
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Start Date: |
7/6/2009
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Response Authority:
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OPA
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Mob Date: |
7/6/2009
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Response Type:
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Emergency
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Demob Date: |
7/7/2009
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NPL Status:
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Non NPL
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Completion Date: |
8/7/2009
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Incident Category:
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CERCLIS ID #: |
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Contract #
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RCRIS ID #: |
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Reimbursable Account #
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FPN# |
E09110
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Monday July 6, 2009: At approximately 9 am, a tanker truck was involved in an accident on Route 95N in Newburyport, MA. As a result, the truck released approximately 8,600 gallons of gasoline onto the road. The gasoline flowed into the storm drain and an unknown amount entered the Merrimack River.
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Since POLREP #4: Source Area: -3004 tons of gasoline-contaminated soil have been removed at up to 18.5 feet below grade (in the source area) and sent off-site for asphalt batching. -Excavation to uncontaminated soil at depth was obtained in all but the release source area. -Six monitoring wells were advanced in the release area. Only one detected gasoline and at level slightly above the MassDEP Drinking Water standard. -The release area was backfilled with clean fill.
Storm Sewer: -The storm sewer and catch basins were cleared of gasoline contaminated solid and liquid during the week of 13-17 July. -The storm sewer was flushed out and liquids collected on July 21.
Merrimack River: -Booming and shore operations concluded on July 27. -Sediment fro various locations along the riverbank were sampled on July 22. -No further sheen or gasoline odor is observed.
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RP contractor plans to install additional monitoring wells to characherize grounwater conditions and to periodically test monitoring wells under MassDEP supervision.
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RP Contractor will file a report with the MassDEP.
Active oversight/coordination by EPA ended on 7/27/2009. EPA direct, START and ERRS final costs are now available for a final POLREP.
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Accurate mass balence of gasoline loss portion to Merrimack River and soil isn't possible.
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All wastes; contaminated soil, sorbent pads, booms and PPE, etc were generate by the RP's contractor, ENPRO, Inc and disposed of by ENPRO. Approximately 3000 tons of gasoline contaminated soil were generated.
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response.epa.gov/ArancoTankerRollover
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