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k`■ KLEINEELDER FILE NO. 20-3978-01.WR6 FEBRUARY 24, 1997 5 RESULTS 5.1 RESULTS OF CHEMICAL ANALYSIS (SOIL) Thirty-two (32) soil samples were submitted under chain-of-custody procedures to Sequoia Analytical Laboratory of Sacramento, California. Sequoia is a State of California Department of Toxic Substances Control (DTSC) certified laboratory for the analyses requested. The soil samples selected for analysis were based on the objectives of the work scope. For additional information please refer to Table 1 and 2 or the laboratory data sheets and Chain-of-Custody records in Appendix C. 5.1.1 Metals Analysis A total of twenty-eight (28) soil samples were analyzed. The metal analyses conducted on the soil samples collected from borings 6-1 through 6-27 yielded levels above the detection limit for arsenic, barium, cadmium, chromium, cobalt, copper, lead, mercury, molybdenum, nickel, vanadium and zinc. The soil sample analyses for all other CAM 17 metals yielded no detection. 5.1.2 Hydrocarbons The only petroleum hydrocarbons detected were unidentified extractable compounds with not less than 14 carbon chains. These were detected in all but five (5) of the samples analyzed. Of these 5, all but one were samples taken at a depth of five feet. Detectable quantities of the organochlorine pesticides 4,4'-DD and/or 4,4'-DDT were found in four (4) surface samples (sample locations 6-7, 6-13, 6-14, and 6-15). Detectable quantities of the chlorinated herbicides 2, 4-1) and/or 2,4-DB were found in six (6) surface samples (sample locations 6-6, 6-9, 6-13, 6-14, 6-15 and 6-18). No semi-volatile organics were detected using the EPA Method 8270 other than those tentatively identified compounds (TICs) found using the GC/MS "open scan." Of those detections, only cyclohexanone, heptacosane, heptadecane, 9-octyl, and several unknowns were detected in more than one sample. 20-3978-01.WR61207RE074.doc Page 11 of 17 01997,Kleinfelder,Inc.