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• and packed into a clean brass sample tube. The pea gravel stockpile samples were also collected in brass sample tubes. Tube ends were covered with Teflon tape and plastic end caps. Soil samples were labeled, placed into a cooler with ice, entered onto a chain of custody record, and transported to a California -certified analytical laboratory. With permission from SJCPHS/EHD, the stockpiled pea gravel was replaced in the former waste oil UST excavation. Hoist Soil Sampling: Cambria collected one soil sample in native soil from beneath each hydraulic hoist (H-1 and H-2) at approximate depths of 10 fbg (Figure 2). The soil samples were collected in the manner described above. Soil excavated from the hoist areas was stored onsite, covered with plastic sheeting, sampled, and profiled for disposal. Transportation and 9 disposal of this soil is currently pending completion of the laboratory analyses. Soil Analyses: The samples collected from the waste oil UST excavation and the stockpiled pea gravel were analyzed for total petroleum hydrocarbons as diesel (TPHd) by EPA Method 8015M, total petroleum hydrocarbons as gasoline (TPHg) and benzene, toluene, ethylbenezne, xylenes (BTEX) by EPA Method 8015M/8020M, oxygenates (TAME, TBA, DIPE, ETBE, and MTBE) by EPA Method 826013, halogenated volatile organic compounds (HVOCs) by EPA Method 802113, cadmium, total chromium, nickel, lead, and zinc by EPA Method 601013, hexavalent chromium by EPA Method 7196A, and polychlorinated biphenyls (PCBs) by EPA Method 8082. Soil samples from beneath the hydraulic hoists were analyzed for total recoverable petroleum hydrocarbons (TRPH) with silica gel cleanup. ANALYTICAL RESULTS Soil analytical results are summarized in Table 1, and the certified analytical reports are included as Appendix A. A discussion of these data is presented below. The soil sample collected from the UST excavation, WO -1, contained 11.2 parts per million (ppm) total chromium, 8.21 ppm nickel, and 46.3 ppm zinc. The composite sample collected from the stockpiled pea gravel, PG -1(A -D), contained 12.8 ppm total chromium, 0.0305 ppm hexavalent chromium, 11.7 ppm nickel, and 27.0 ppm zinc. These concentrations of metals are well below hazardous waste levels as defined by Title 22 of the California Code of regulations and may represent background levels. TPHd, TPHg, BTEX, oxygenates, HVOCs, PCBs, and cadmium were not detected in either of these samples. The soil sample collected from beneath the eastern hydraulic hoist (H-1) contained 820 ppm TRPH. TPRH was not detected in soil beneath the western hoist (H-2). Hydraulic oil is a heavy hydrocarbon that typically does not migrate far from the source. Therefore it is 0955 2