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EnviroTech Consultants, Inc. Page 21 <br /> Site Investigation: Sampling Report <br /> Louise Avenue Water Treatment Facility <br /> 6.2 Confirmation Sample Analytical Result Summary <br /> Table 3 summarizes the soil sample analytical results and includes the SFBRWQCB ESLs for Direct <br /> Exposure Soil for Construction/Trench Worker and the EPA Carcinogenic Target Risk Dermal Screening <br /> Levels for comparison. The complete laboratory reports are included in Attachment 4. <br /> All six of the confirmation samples had arsenic concentrations below the SFBRWQCB ESL threshold of 10 <br /> mg/kg and the EPA dermal screening level of 17 mg/kg. Vanadium concentrations detected in all of the <br /> samples did not exceed the TTLC of 2,400 mg/kg. There is no EPA Dermal Screening Level for vanadium. <br /> 5400 Rosedale Highway 0 Bakersfield, CA 93308 0 Tel 661.377.0073 9 Fax 661.377.0074 <br />