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ecology and environment,inc. <br /> ................................................................................................................................................................................................................................................... <br /> 3. Objectives <br /> E <br /> The screening data plus 10% definitive data will be the results <br /> from the XRF analysis(soils) with at least 10%of the samples <br /> analyzed by a definitive method. Non-definitive geological and <br /> E lithological information will be generated from logging of core <br /> samples from Geoprobe®boreholes. <br /> Definitive data will include data resulting from the laboratory <br /> analysis of 10%of the XRF soil samples and samples collected <br /> E solely for laboratory analysis. All data generated for this project <br /> are intended to meet the specification of definitive category data as <br /> defined in the ERO Quality Assurance Project Plan (QAPP). All <br /> j definitive analytical methods employed for this project will be <br /> methods approved by the EPA. <br /> E <br /> 3.3.3 DQO Quality Indicators <br /> DQO Quality Indicator Goals (Table 5-2) for this project have been <br /> developed following guidelines specified in the ERO QAPP. <br /> 3.4 Action Levels <br /> I <br /> Data generated by this investigation will be compared to the <br /> established industrial preliminary remediation goals (PRGs) <br /> presented below. The PRGs developed by the EPA combine EPA <br /> toxicity values with reasonable maximum exposure factors to <br /> estimate concentrations in environmental media that are protective <br /> of humans, including sensitive groups, over a lifetime of exposure. <br /> I <br /> Soil Action Levels <br /> Contaminant . . . . . . . . . . . . . . . . . . . . . . . . . PRG Value <br /> Industrial Soils <br /> Metals <br /> Zinc (noncancer endpoint) . . . . . . . . . . . . . . . . . . . 100,000 mg/kg <br /> Lead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,000 mg/kg <br /> Arsenic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480 mg/kg <br /> Cadmium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 930 mg/kg <br /> Chromium 450 mg/kg <br /> Non-Metals <br /> Phenol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100,000 mg/kg <br /> Pentachlorophenol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 mg/kg <br /> Benzene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 mg/kg <br /> Ethyl Benzene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 mg/kg <br /> 09:C:\MyFiles\PROJECT\Tracy_Tire\QASP\QASP_0339.%vN-11/30/98 3-2 <br />