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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 /> Attention John Russell Received 08/20/91 <br /> Address 3750 Auburn Blvd. , Suite A Reported 08/28/91 <br /> Sacramento, CA 95821 <br /> Quality Control Page <br /> Source: Stockton Unified School District, Pro) . No. 0089003 <br /> Lab. No. : 917646 <br /> Sample T.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: 08/22/91 <br /> EPA Method: 8020 <br /> Analysis units Replicate Analytical Results Det. Lim. <br /> Benzene ug/Kg 27 26 Spk. Rec. 118% 1 <br /> Toluene ug/Kg 94 96 Spk. Rec. 1170 1 <br /> Ethylbenzene ug/Kg 9 10 1 <br /> Total Xylene ug/Kg 59 68 1 <br /> Comments: Results reported in micrograms per kilogram. <br /> fc-r- <br /> Analyst Polly Cheung Manager kdl:�a� <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 />