Gila River Boundary

All POLREP's for this site Gila River Boundary
Laveen, AZ - EPA Region IX
POLREP #1 - Initiation of Action
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On-Scene Coordinator - Harry Allen IV 4/18/2004
Time-Critical - Removal Action Pollution Report (POLREP) #1
Start Date: 4/15/2004
Site Description
EPA is responding to soils contaminated with the pesticide toxaphene, resulting from the disposal activities of a pesticide aerial applicator who ceased operations over 20 years ago.  The Site is on lands of the Gila River Indian Community (GRIC).  Extensive planning with the Tribe over the past year has resulted in this removal action.  Toxaphene concentrations over portions of this 17 acre site pose human health and environmental threats.
Bench-scale and pilot-scale studies over the past yearr have confirmed the effectiveness of anaerobic bioremediation in treating his contamination to levels below concern.


Current Activities
Personnel and equipment were mobilized to the Site on April 14, 2004.  Excavation of soils commenced and soils were stockpiled for treatment.  As of April 18th, approximately 3,045 cubic yards have been excavated and stockpiled.
Meetings were held with Tribal environmental personnel to review operations.  Dust control has been effective.  No problems have been encountered tus far.


Planned Removal Actions
Excavation of soils will continue during the week of April 19th.  Then the treatment cells will be prepared.  The contaminated soils will be mixed with treatment amendments and water, and loaded into the lined cells.  Areas where contaminated soils were removed will be back-filled with clean soil.  

Key Issues
This removal is on the Gila River Indian Community so close coordination with the Tribe is very important.