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5.0 Conclusions and Recommendation <br /> Based on laboratory results, current regulatory guidelines, and the judgment of Shaw, the <br /> following conclusions and recommendations are offe ed. <br /> • The soil samples collected from the site. were reported to contain O&G and heavy <br /> metals. The samples were not reported to contain TPHg, TPHd, VOCs, BTEX, <br /> fuel oxygenate compounds, ethanol/methanol, SVOCs, chlorinated hydrocarbons, <br /> or organochlorine pesticides. <br /> [ # The O&G detected in the soil samples may originate from the leach system. The <br /> reported concentrations are not considered to be high. <br /> • Soil samples collected from the site were reported to contain chromium, lead, <br /> nickel, and zinc. The soil samples i ere not reported to contain cadmium or <br /> hexavalent chromium. None of the detected heavy metals were present at <br /> concentrations that exceeded EPA, Region 9, industrial soil PRGs, TTLC values, or <br /> ten-times the respective STLCs. It is unlikely that the soil, should it become a <br /> waste, would be considered a hazardous waste. <br /> lF <br /> • Based on the soil results, the levels do not appe_ar.'to,pose a threat, and no further <br /> rassessment or remedial action is warranted._ <br /> Recommend a closure of the leachfield. <br /> F <br /> F <br /> F4, <br /> �i <br /> N.-L acDPL00031Pr11831835444.3ac.doc 5.1 <br />