Stage of Clean-up: Construction Completed
Conditions at proposal (June 24, 1988): The Riverbank Army Ammunition Plant (RBAAP) covers approximately 173 acres about 10 miles northeast of Modesto, California, on the northern border of Stanislaus County. The main facility comprises 145 acres. Four unlined industrial waste treatment ponds in the floodplain of the Stanislaus River approximately 1.5 miles north of the main facility account for the remaining 28 acres. In 1942, the ALUMINUM Co. of America constructed RBAAP as an ALUMINUM reduction plant to supply the military. It closed in 1944. Since reopening in 1951, the facility, with Norris Industries, Inc., as the operating contractor, has manufactured materials such as cartridge cases, grenades, and projectiles. As a result of industrial activities, RBAAP has generated varying quantities of corrosive wastes (PHOSPHORIC ACID, SULFURIC ACID, and caustic cleaners), solvents, spent pickle liquids, and waste water containing metals. More...
Sources of Contamination:
- Manufacturing process
- Waste pile