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All soil samples were submitted using chain-of-custody protocol to McCampbell Analytical, Inc. <br /> (McCampbell) for lead analysis. Eight samples were further analyzed for CAM 17 metals, tin, and <br /> polynuclear aromatic hydrocarbons (PAHs) as requested by SJCEHD. <br /> With the exception of lead, CAM 17 metals, tin, and PAHs were not detected at concentrations <br /> exceeding the site cleanup goals established in the SJCEHD-approved Soil Remedial Excavation <br /> Workplan (SREW). Lead was reported in three samples (P16, G12, and G13) at concentrations <br /> exceeding its cleanup goal of 80 mg/kg. Lead results are summarized in Table 2, CAM 17 metals and <br /> tin results are summarized in Table 3, and PAH results are summarized in Table 4. Analytical <br /> laboratory reports are included as Attachment A. <br /> The areas of P16, G12, and G13 were further excavated on June 1, 2, and 5, 2017, to remove soil with <br /> lead concentrations exceeding the 80 mg/kg cleanup goal. Geocon collected 14 additional confirmation <br /> samples on June 5, 2017, and submitted the samples to McCampbell for lead analysis. As summarized <br /> on Table 2, all remaining confirmation samples at the site had a reported lead concentration less than <br /> the cleanup goal of 80 mg/kg. <br /> Based on the final confirmation sample results, and with the concurrence of SJCEHD during a <br /> June 14, 2017, telephone call between Mr. Kith and Andy Mantell of NV 5, remediation was <br /> considered complete and the Site was rough graded to level on June 15 to 17, 2017. <br /> Based on Geocon's field records, 65 truckloads of non-RCRA hazardous waste and 47 truckloads of <br /> RCRA hazardous waste were removed from the site for disposal at Clean Harbors Buttonwillow <br /> Class I landfill. The truck loading dates were as follows: <br /> DATE Non-RCRA Loads RCRA Loads <br /> March 7, 2017 10 5 <br /> March 8, 2017 12 4 <br /> March 9, 2017 12 5 <br /> March 10, 2017 1 5 <br /> March 13, 2017 5 5 <br /> March 14, 2017 5 5 <br /> March 15, 2017 5 5 <br /> March 16, 2017 0 8 <br /> March 17, 2017 2 4 <br /> June 2, 2017 7 1 <br /> June 5, 2017 5 1 0 <br /> June 8, 2017 1 0 <br /> Total 65 47 <br /> Geocon Project No.ESS57-02-02 -2- August 25,2017 <br />