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COLUMBIA ANALYTICAL SERVICES, INC. <br /> Client: EMCON Associates Date Received: 05/29/91 <br /> Submitted By. Client Work Order #: SJ91-0751 <br /> Project: Nor Cal Beverage/G05-01.01 Sample Matrix: Soil <br /> QA/QC Report <br /> Surrogate Recovery Summary <br /> TPH as Diesel <br /> DHS LUFT Method . <br /> Ssmole Name Date Analyggg Percent Recgv�ry <br /> P-Terphenyf <br /> MW-1 171h-18' 06/03/91 103. <br /> • MW-141-411/2' 06/03/91 114. <br /> Method Blank 06/03/91 117. <br /> CAS Acceptance Criteria 55-145 <br /> TPH Total Petroleum Hydrocarbons <br /> Approved by ,' r Date <br /> 5 <br /> 1921 Ringwood Avenue Son Jose. Colifornia 95131 • Telephone 408/437-2400 • Fox 4081487.9356 <br />