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■ Z1 tNC The soil samples were collected under the oversight o PHSEHD personnel. Soil samples were collected as depicted on Exhibit 3. Soil samples TK-I and TK-2 were collected at depths of 7.5 and 3 feet below ground surface, respectively. Soil sample SP 1-Site 92 was collected from a pile of excavated soil that appeared to be strongly impacte I by hydrocarbon staining. The soil samples were analyzed by a California state ertified analytical laboratory using United States Environmental Protection Agency(USEPA) Tt st Methods 5030 and 8020 for total petroleum hydrocarbons as gasoline fuel and benzene toluene, ethyl benzene and xylene, respectively. USEPA Test Method 3550 was used to determine concentrations of total petroleum hydrocarbons as diesel fuel and/or oil. The laborato analytical results for the soil samples are included as Appendix II. Results for these analyses a summarized in Table 1. Analyses for polychlorinated biphenyls (PCB's)was conducted using USEPA Test Method 8080 and volatile organic compounds (VOC's)by U EPA Test Method 8010. Results for these analyses are summarized in Table 2. The soil sample 3 were also analyzed for hexavalent chrome, cadmium, lead, nickel, zinc, and chrome III i ising USEPA Test Methods 7196, 6010, 7420, 6010, 6010, and 6010, respectively. Results for these analyses are summarized in Table 3. The soil samples were reported to contain maximum oncentrations of potentially hazardous hydrocarbon constituents in soil as follows: total petrleum hydrocarbons as gasoline fuel (4.4 mg/kg); total petroleum hydrocarbons as diesel or oil (7,400 mg/kg); benzene (below detection limit); toluene (21 ug/kg); ethyl benzene(710 ug/kg) and total xylene (4,500 ug/kg). Analyses of the soil samples for volatile organic compounds were reported to contain: Trichloroethene (6.1 ug/kg); Tetrachloroethane (21 ug/kg); 1,4-Dichlorobenzene (78 ug/kg); and 1,2-Dichlorobenzene (44 ug/kg). Laboratory analyses of soil samples for other constituents of concern included PCB's (below detection limits). Maximum metal concentrations in the soil were reported as follows: hexavalent chrome (below detection limit); <admium (below detection limit); lead (14 mg/kg); nickel (6 mg/kg); zinc(170 mg/kg); and chr me III (10 mg/kg). 08420010.001 2