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Clayton <br /> LABORATORY <br /> SERVICES <br /> Page 5 of 15 <br /> Analytical Results <br /> for <br /> Pacific Gas & Electric Company <br /> Client Reference: MCDONALD ISL. GAS WELL 18W <br /> Clayton Project No. 98042 . 87 <br /> Sample Identification: 18W-1H-SOIL Date Sampled: 04/21/98 <br /> Lab Number: 9804287-05A Date Received: 04/21/98 <br /> Sample Matrix/Media: SOIL Date Extracted: 04/23/98 <br /> Extraction Method: EPA 3550 Date Analyzed: 04/27/98 <br /> Method Reference : EPA 8015 (Modified) Analyst: DTT <br /> Limit <br /> of <br /> Concentration Detection <br /> Analyte CAS # (mg/kg) (mg/kg) <br /> Total Extractables <br /> Total-Extractables -- 840 20 <br /> PH-Oil -- 830 80 <br /> 1-0 <br /> urrogates <br /> Recover C Limits M <br /> p-Terphenyl 92-94-4 74 50 - 150 <br /> ND: Not detected at or above limit of detection <br /> --. Information not available or not applicable <br /> Total Extractables = Extractable hydrocarbons from C10 to C42 quantitated as diesel. <br /> TPH-0 = Extractable hydrocarbons, that appear to match the typical oil pattern from C20 to C42 <br /> quantitated as hydraulic Oil. <br /> Results are reported on a wet weight basis, as received. <br /> Note: Detection limits increased due to dilution necessary for quantitation. <br />