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KEI-P92-0205.R2
<br /> December 1, 1992
<br /> Page 2
<br /> additionally excavated from the diesel fuel tank pit. Three
<br /> composite samples (designated as Comp H, Comp I , and Comp J) were
<br /> collected and stored as described above. Sample point locations
<br /> are as shown on the attached Site Plan, Figure 1.
<br /> On September 30, 1992 , a representative of KEI returned to the site
<br /> to re-sample the approximately 255 cubic yards of stockpiled soil
<br /> on-site. Three composite soil samples (designated as Camp Al, Comp
<br /> B1, and Comp C1) were collected and stored as described above.
<br /> These samples were collected in order to analyze for EPA method
<br /> 8010 constituents, which was necessary to meet the requirements of
<br /> the proposed landfill. The previous composite samples were beyond
<br /> their hold time for these analyses.
<br /> Soil samples were analyzed to determine concentrations of total
<br /> petroleum hydrocarbons (TPH) as gasoline by EPA method 5030 3n
<br /> conjunction with modified 8015 , TPH as diesel by EPA method 3550 in
<br /> conjunction with modified 8015 , and benzene, toluene, xylenes, and
<br /> ethylbenzene by EPA method 8020 . In addition, Comp Al, Comp B1,
<br /> and Comp C1 were analyzed for EPA method 8010 constituents and the
<br /> metals arsenic, barium, cadmium, chromium, cobalt, copper, lead,
<br /> mercury, nickel, and zinc. Soil sample Comp Al was also analyzed
<br /> for corroszvity, ignitabzlity, and reactivity. Analytical results
<br /> of the soil samples (Comp A, Comp B, Comp C, Comp D, Comp E, Comp
<br /> F, Comp G, Comp H, Comp I and Comp J) indicated levels of TPH as
<br /> gasoline ranging from non-detectable to 170 ppm, and levels of TPH
<br /> as diesel ranging from 9 . 8 ppm to 670 ppm. Results of the soil
<br /> analyses are summarized in Table 1 and Table 2 . Copies of the
<br /> laboratory analyses and the Chain of Custody documentation are
<br /> attached to this report.
<br /> Based on the analytical results of the soil samples, approximately
<br /> 230 cubic yards of stockpiled soil, represented by samples Comp A,
<br /> Comp B, Comp C, Comp D, Comp E, Comp F, Comp H, Comp I and Comp J,
<br /> were disposed of at BFI Waste Systems (an approved class III
<br /> landfill) by Dillard Trucking of Byron, California, on November 16,
<br /> 1992 . However, prior to loading and off-hauling of the stockpiled
<br /> soil, KEI recommended that if obvious isolated areas of contamina-
<br /> tion were detected within the stockpiled soil, those portions of
<br /> the soil be separately stockpiled for further treatment and
<br /> sampling.
<br /> In addition, approximately 25 cubic yards, represented by Comp G,
<br /> were left on-site for further treatment.
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