Contamination Assessment Report, Site 4-6, Motor Pool Area. Task 38. Version 2.3.

摘要

This draft final report documents the phase I contamination survey of site 4-6, a vehicle maintenance area. A total of 36 borings, 1 soil grab sample, and 3 water samples yielded 169 samples. These samples were analyzed for volatile and semivolatile organics and metals with separate analyses for AS, HG, and DBCP. The following analytes were detected within or above their respective indicator rangers: C6H6, CHCL3, 11DCLE, ETC6H5, CH2CL2, TCLEE, MEC6H5, 111TCE, TRCLE, XYLEN, ALDRN, DBCP, CD, CR, CU, PB, ZN, AS, and HG. Because the phase I survey has defined the general extent of potential contamination, no phase II program is planned at this time. However, ground water monitoring and the drilling of a limited number of borings near the fuel storage tanks are recommended. The volume of potentially contaminated material presented is estimated at 180,000 cubic yards. Appendices : chemical names, phase I chemical data. jg.