Remedial Action, Decision Document, Leaseback Area, Alabama Army Ammunition Plant.

摘要

The Alabama Army Ammunition Plant (AAAP) is located in Talladega County in northeastern Alabama, approximately 4 miles north of Childersburg and 40 miles southeast of Birmingham. The plant was established in 1941 as the Alabama Ordnance Works on 13,233 acres of land located near the junction of the Talladega Creek and the Coosa River. The terrain is level to rolling and largely suited to pasture and timberland, with elevations ranging from 384 to 600 feet above Mean Sea level (MSL). In 1977, a 1,354 acre parcel was sold to Kimberly Clark Corporation. Contained within this parcel were nitrocellulose and smokeless powder manufacturing areas. To allow the government to remove the equipment and decontaminate these manufacturing facilities for industrial use, a 272 acre area was leased back to the government until August. A 1983 (Rockwell, 1982). This area, on which this Decision Memorandum is based, is referred to as the Leaseback Area. A detailed diagram of the Leaseback Area is shown in Figure 3. An aerial photograph of the area is shown in Figure 4. Contaminated soil has been the primary source of surface and groundwater contamination. The groundwater resources below the AAAP consist of the dolomite aquifer of the Coosa Valley and a shallow, low yielding residual clay aquifer. The dolomite aauifer is the productive potable groundwater resource. The shallow aquifer is considerably less productive than its deeper counterpart. The groundwater flows in a west-northwesterly direction towards the Coosa River, and away from the 140 residences which lie within a mile or two of the AAAP and use groundwater sources for potable water.