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United
States Environmental Protection Agency
Region IX
POLLUTION REPORT
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| Date: |
Monday, March 14, 2005
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| From: |
Harry Allen IV
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| To: |
Harry L. Allen, U.S. EPA Region 9
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Harry Allen, Environmental Response Team
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Michael Daniel, GRIC Department of Environmental Quality
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Wenona Wilson, U.S. EPA Region 9
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Subject:
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Treatment Cell Decommissioning
Gila River Boundary
51st Avenue and Komatke Lane,
Laveen, AZ
Latitude: 33.3239304
Longitude: -112.1724701
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| POLREP No.: |
6
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Site #:
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0963
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| Reporting Period: |
1/31 through 2/3/2005
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D.O. #:
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| Start Date: |
4/15/2004
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Response Authority:
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CERCLA
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Mob Date: |
4/14/2004
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Response Type:
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Time-Critical
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| Demob Date: |
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NPL Status:
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Non NPL
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| Completion Date: |
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Incident Category:
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Removal Action
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| CERCLIS ID #: |
AZD981621881
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Contract #
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| RCRIS ID #: |
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On January 31, 2005, the six treatment cells at the Site were decommissioned. First, a vacuum truck was used to remove pooled rainwater from the cell covers. The cell covers and sampling ports were then removed and disposed in a roll-off bin.
Following the uncovering of the cells, START collected soil samples in an atmept to further characterize residual toxaphene concentrations. Samples were collected at locations opposite the pre-existing sampling ports in a "mirror image" of previous sampling locations.
The excavator was used to poke holes in the bottom liner of each cell. Three holes were made per cell. This allowed the cells to begin draining and drying out.
The Site was regraded with the excavator, loader and bulldozer. One EPA OSC, one START member, 3 equipment operators and the project accountant were present. All demobilized on 2/3/2005.
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Fencing around the Site will remain until July. This should allow enough time for the former cells to dry completely. While wet, the cells pose a safety risk (slips, trips and falls) to persons trespassing on the Site.
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response.epa.gov/GilaBoundary
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