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COLUMBIA ANALYTICAL SERVICES, INC. <br /> i <br /> Client: EMCON Associates . pate Rocehred: 06/04/91 <br /> Submitted By: Client Worts Omer*,. SJei-0787 <br /> - Project: Nor Cal Beverage/G05-01.01 Sample Matrbc: Water <br /> QA/QC Report <br /> Surrogate Recovery Summary <br /> STEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS WFF Method <br /> Sample Name D02 Anafto Paresnt Ftaadvary <br /> 4-Bromaguorobenzone <br /> �., MW-1 06/06/91 91. <br /> Method Blank 06/06/91 91. <br /> CAS Acceptanc,9 Criteria 70-140 <br /> TPH Total Petroleum Hydrocarbons <br /> Approved by_4 � —Date <br /> — <br /> 6 <br /> 1921 Ringwood Avenut • Son Jose,Coli}oinio 951;1 o Telephone 4081437.2400 a Fox 408/437.9336 <br />