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a€ s KEI-P91-0202.R5 October 16, 1991 Page 3 i analyzed to determine levels of total petroleum hydrocarbons (TPH) as gasoline. Product pipe trench samples P1 througn P3, and samples Al and A2, were also analyzed for TPH as diesel. Soil samples WO1, collected from beneath the waste oil tank, and P12, collected from beneath the waste oil remote fill line, were analyzed for BTX&E, halogenated volatile organics using EPA method 8010, total extractable petroleum hydrocarbons (TEPH) , polychlorin- ated biphenyls (PCB's) , and the metals cadmium, chromium, lead, and zinc. Sample W01 was also analyzed for TPH as gasoline. Analytical results of the initial soil samples collected from the fuel tank pit (samples Al, A2, B1, B2, C1, and C2) indicated non- detectable levels of TPH as gasoline or TPH as diesel (as applic- able) for all samples, eZf,� !jam _Q which showed ,,TPH as gasoline at 3,900 ppm, with benzene at 7.4 ppm. Analytical results of these six samples also indicated non-detectable levels of both total lead and EDB for all six samples. Analytical results of the soil samples collected after additional excavation at sample point C2 [i.e. samples C2 (26) , SW-N, SW-S, SW-E and SW-W] indicated non- detectable levels of TPH as gasoline, with benzene levels at 0.0057 ppm and 0.057 ppm, for samples SW-N and SW-E, while samples C2(26) , SW-S and SW-W showed levels of TPH as gasoline ranging from 2.5 ppm to 6.1 ppm, with benzene levels ranging from 0.19 ppm to 0.57 ppm. Analytical results of the 11 product pipe trench samples indicated non-detectable levels of TPH as gasoline, total lead and EDB for all samples, with benzene levels ranging from 0.0068 ppm to 0.018 ppm. The analytical results also indicated non-detectable levels of TPH as diesel for samples P1 through P3. The analytical results of the soil samples collected from beneath the waste oil tank and remote fill line (samples W01 and P12) indicated non-detectable levels of TEPH, BTX&E, PCB's, and all EPA method 8010 constituents for both samples. The analytical results also indicated a non-detectable level of TPH as gasoline for sample WO1. Metal concentrations for each sample are as indicated in Table 5. Results of the soil analyses are summarized in Tables 4 and 5. To comply with the requirements of the regulatory agencies and based on the analytical results, KEI proposed installation of three monitoring wells. Documentation of tank removal protocol, soil ------_,__.......__.._.._.._.___.__._...-----.__ _...---........._....----sample--collection-techniques,.....and-results-of---the--soil--samples--from--------..__.._.---.----.._.----------._...-------------.-----_-_--- the tank excavation are summarized in KEI's report (KEI-J91- 0202.R1) dated April 9, 1991.