Sharpe Army Depot
EPA #: CA8210020832
State: California(CA)
County: San Joaquin
City: 1.5 miles east of Lathrop
Congressional District: 11
Other Names:
Description and History
NPL Listing History
NPL Status: Final
Proposed Date: 10/15/1984
Final Date: 07/22/1987
Deleted Date:
The 724-acre Sharpe Army Depot site has been involved in the storage, shipping, packaging, and maintenance of general supplies. Between 1941 and 1975, maintenance of aircraft, vehicles, industrial equipment, and medical equipment resulted in the generation of a variety of chemical wastes produced on site were disposed of in multiple locations, including the South Balloon Area, the Burning Pits Area, and the North Balloon Area. The wastes include sludge containing phenols, polychlorinated hydrocarbons, and used paints and solvents. Wastes have contaminated both soil and groundwater. All maintenance activities have ceased, and the waste areas no longer are used. The Depot employs approximately 1,200 people. The contaminated sole source aquifer supplies water to approximately 33,600 people within 3 miles of the facility. The San Joaquin River is 2 miles from the depot.
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Contaminants and Risks
Contaminated Media:
Groundwater
Soil and Sludges
Groundwater and soil contain volatile organic compounds (VOCs) including trichloroethylene (TCE). Soil contains metals and pesticide contamination. People who accidentally ingest contaminated groundwater or come in direct contact with site contaminants may be at risk.
Who is Involved
This site is being addressed through Federal actions.
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Investigation and Cleanup Activities
This site is being addressed in three stages: immediate actions and two long-term remedial phases focusing on cleanup of the entire site and groundwater cleanup.
Immediate actions: The Army built an interim groundwater treatment system at the South Balloon Area. Extraction and treatment of groundwater to remove VOC began in early 1987. A second interim groundwater treatment system became operational in the North Balloon area in late 1990. A Removal Action for pesticides in soil has been completed.
Entire Site: A final base-wide ROD was signed in March 1996. The Remedy selections included excavations and disposal of soils contaminated with metals and soil vapor extraction for several areas of VOC contaminated soils. The remedial actions for contaminated soil are nearing completion.
Groundwater: The Record of Decision (ROD) for treatment of VOCs in GW was signed in 1993. The system is constructed and in operation. Cleanup is expected to continue for approximately 15 years.
The Sharpe Army Depot is participating in the Installation Restoration Program, a specially funded program established by the Department of Defense (DOD) in 1978 to identify, investigate, and control the migration of hazardous contaminants at military and other DOD facilities.
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Cleanup Results to Date
The 3 Groundwater extraction and treatment systems are constructed and operating effectively. Cleanup at contaminated soil areas is nearing complete. A Removal Action was completed for a small area of pesticides contamination.
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Potentially Responsible Parties
Potentially responsible parties (PRPs) refers to companies that are potentially responsible for generating, transporting, or disposing of the hazardous waste found at the site.
Online information about the PRPs for the site is not yet available.
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Public Information Repositories
The most complete collection of documents
is the official EPA site file, maintained at
the following location:
Superfund Records Center
Mail Stop SFD-7C
95 Hawthorne Street, Room 403
San Francisco, CA 94105
(415) 536-2000
Enter main lobby of 75 Hawthorne street,
go to 4th floor of South Wing Annex.
The public information repositories for
the site are at the following locations:
Manteca Library (Administrative File Index), 320 West Center Street,
Manteca, CA 95336
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Contacts
|
Name |
Phone Number |
Email |
Address |
| EPA Site Manager |
Michael Work |
(415) 972-3024 |
work.michael@epa.gov |
US EPA Region 9, SFD-8-3
75 Hawthorne Street
San Francisco, CA 94105 |
EPA Community
Involvement Coordinator |
|
1-800-231-3075 |
|
|
EPA Public Information
Center |
|
(415) 947-8701 |
r9.info@epamail.epa.gov |
|
| State Contact |
Peter MacNicholl |
916-255-3713 |
|
|
| PRP Contact |
John Guzman |
(209) 839-4129
|
|
|
| Community Contact |
|
|
|
|
| Other Contacts |
|
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|
|
After Hours
(Emergency Response) |
US EPA |
(800) 424-8802 |
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