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LABORATORY REPORT PACIFIC ENVIRONMENTAL LABORATORY <br /> 674 Harrison Street <br /> San Francisco, CA 94107 <br /> 415-243-2580 <br />• For Helmick & Lerner, Inc. <br /> Attentlon John Russell Received 08/20/91 <br /> Address 3750 Auburn Blvd. , Suite A Reported 08/28/91 <br /> Sacramento, CA 95821 <br /> Amended 09/06/91 � <br /> Source: Stockton Unified School District, Pro] . No. 0089003 <br /> Lab. No. : 917646 <br /> Sample I.D. : 136 <br /> Matrix: Soil <br /> Depth: -- <br /> Date Collected: 08/19/91 <br /> Time Collected: 1139 <br /> Collected by: HLI <br /> Date Extracted: -- <br /> Date Analyzed: 08/22--23/91 <br /> Analytical Method: Calif. DHS LUFT Manual <br /> Analysis Units Analytical Results Det. Lim. <br /> Volatile Petroleum <br /> Hydrocarbons (1) mg/Kg <5* 5 <br /> I <br /> *Sample shows presence of diesel. <br /> Volatile Petroleum Hydrocarbons could not be detected below 5 mg/Kg due to <br /> the interference of diesel peak. <br /> Comments: Gas chromatographic analysis using flame ionization detection <br /> (LUFT Manual procedure, "Modified 8015") . Results reported in milligrams per <br /> kilogram. (1) By purge-and-trap, quantitated using gasoline response factor. <br /> Analyst L. Perrine B. Johnston finager Le <br /> L. Kennedy <br /> This report applies only to the sample investigated and is not necessarily indicative of the quality of apparently identical or <br /> similar samples The liability of the laboratory is limited to the amount paid for the report by the issuee. The issuee assumes <br /> all liability for the further distribution of this report or its contents and by making such distribution agrees to hold the <br /> Laboratory harmless against all claims of persons so informed of the contents hereof. <br /> x <br />