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COLUMBIA ANALYTICAL SERVICES, INC. <br /> Client: EMCON Associates Date Received: 03/29/91 <br /> Submitted By: Client Work Order#: SM-0751 <br /> Preled: Nor Cal Beverage/G05-01.01 Sample Matrbc: Sad <br /> QA/QC Report <br /> Surrogate Recovery Summary <br /> 8TEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS WFr Method <br /> Ssmlaie Name Date Analyzed P=gnt-R <br /> 4-Bromoliuorobenzene <br /> MW-1 17$At-18' 05/30/91 92. <br /> ^ ' MWA 41-41'A 05/30/91 105. ff <br /> Method Blank 05/30/91 79. <br /> CAS Acceptance Criteria 70-140 <br /> 'SPH Total Petroleum Hydrocarbons <br /> Approved tryJJ Date17- <br /> e <br /> 021 Ringwood Avenue 4 Son lose. Caillomio 95`131 • Telephone 4091437.2400 • fax 4081437.9355 <br />