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COLUMBIA ANALYTICAL SERVICES, INC. <br /> Client: EMCON Associates Date Received: 06/D4/91 <br /> . Submitted By: Client Work Order #: SJ91-0787 <br /> Project: Nor Cal Beverage/G05-01.01 Sample Matrix: Water <br /> QA/QC Report <br /> Surrogate Recovery Summary <br /> TPH as Diesel <br /> DHS LUFT Method <br /> Sample Name Date Analyzed Pmoerrt Figcovery <br /> P-Terphenyl <br /> MW-1 06/11/91 120• <br /> Method Blank D6/11/91 426• <br /> CAS Acceptance Criteria 55-145 <br /> TPH Total Petroleum Hydrocarbons <br /> Approved by Date <br /> 5 <br /> 1921 Ringwood Avenue • Son Jose, Colifornio 95131 • Telephone 4081437-2400 Fox 4081437-9356 <br />