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ICES <br /> 6. 1 Laboratory Analytical Results <br /> Results of the preliminary sampling activities indicated that <br /> organochlorine pesticides, lead, and mercury were below their <br /> respective residential environmental screening levels (ESLs) The <br /> only detectable organochlorine pesticide was DDT . DDT <br /> concentrations ranging from less than 0 . 00010 mg/kg (not detected) <br /> to 0 . 00020 mg/kg were substantially below the residential ESL of <br /> 1 . 9 mg/kg. <br /> Arsenic concentrations ranging from 1 . 9 mg/kg to 3 . 0 mg/kg were <br /> above the residential ESL of 0 . 067 mg/kg and within typical arsenic <br /> background levels of up to 11 mg/kg. Contaminant concentrations <br /> that are within background levels are considered acceptable by <br /> regulatory agencies where their background levels exceed the <br /> corresponding ESL. Lead and mercury were below their respective <br /> residential ESLs of 82 mg/kg and 13 mg/kg. <br /> 7 .0 DISCUSSION <br /> Based on the findings of this preliminary site investigation, it <br /> appears that the soil within the Site had not been impacted by <br /> agricultural activities that were formerly conducted at the <br /> Site . Organochlorine pesticides, lead, and mercury were below <br /> their respective residential ESLs; and arsenic concentrations were <br /> within background levels . <br /> 8 .0 EXCLUSIONS <br /> ICES assumes no responsibility or liability for the reliance hereon <br /> or use hereof of information contained in this report by anyone <br /> other than the party to whom it is addressed. <br /> The evaluations and recommendations presented in this report are <br /> based on the sampling results available at this time and could be <br /> revised if new information necessitating further review of the Site <br /> becomes available. <br /> - 3 - <br />