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(1) Identified as diesel. Comments: Samples were prepared by EPA Method 3540 (Soxhlett extraction), followed by concentration, per DHS/Tri-Regional Board guidelines. Gas chromatographic analysis using flame ionization detection (LUFT Manual procedure, "Modified 80150), quantitated using diesel response factor. Commercial diesel was used as comparison standard. Results reported in milligrams per kilogram, wet (as received) weigh basis. Analyst Lynn Perrine Manager This report applies only to the sample Investigated and is not necessarily indicative of the quality or apparently identical or similar samples. The liability of the laboratory is limited to the amount paid for the report by the issues. The issues assumes all liability for the further distribution of this report or its contents and by making such distribution agrees to hold the laboratory harmless against all claims of persons so informed of the contents hereof. Ile - LABORATORY REPOF3T Kennedy/Jenks/Chilton, Laboratory Division 303 Second Street, Tenth Floor North San Francisco, CA 94107 415-362-6065 For: Helmick and Lerner Received 12/07/90 Reported 12/24/90 Attention: Noel Lerner — Address: 3750 Auburn Blvd, Suite A Sacramento, CA 95821 (HLI 0089002) Source: Edison High School — Lab. No.: 908998 Sample I.D.: 025 Matrix: Soil — Depth: 14 ft. Date Collected: 12/06/90 Time Collected: 1354 — Collected by: HLI Date Extracted: 12/11/90 Date Analyzed: 12/13/90 — Analytical Method: 8015 Analysis Units Analytical Results Det. Lim. Semivolatile Petroleum Hydrocarbons (1) mg/Kg 430 1 (1) Identified as diesel. Comments: Samples were prepared by EPA Method 3540 (Soxhlett extraction), followed by concentration, per DHS/Tri-Regional Board guidelines. Gas chromatographic analysis using flame ionization detection (LUFT Manual procedure, "Modified 80150), quantitated using diesel response factor. Commercial diesel was used as comparison standard. Results reported in milligrams per kilogram, wet (as received) weigh basis. Analyst Lynn Perrine Manager This report applies only to the sample Investigated and is not necessarily indicative of the quality or apparently identical or similar samples. The liability of the laboratory is limited to the amount paid for the report by the issues. The issues assumes all liability for the further distribution of this report or its contents and by making such distribution agrees to hold the laboratory harmless against all claims of persons so informed of the contents hereof.