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COLUMBIA ANALYTICAL SERVICES, INC. <br /> ' Analytical Report <br /> Client: EMCON Associates Date Received: 08/26/92 <br /> Project: A. Teichert & Sans, Inc./F90-02.01 Work Order #: SJ92-1072 <br /> Sample Matrix: Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS LUFT Method <br /> ,ug/L (ppb) <br />' Sample Name: MW-10 MW-11 MW-12 <br /> Date Analyzed: 09/04/92 09102/92 09/02/92 <br />' Analyte MRL <br /> Benzene 0.5 18, <6.- N D <br />' Toluene 0.5 16. 3.3 ND <br /> Ethylbenzene 0.5 3. 0.8 ND <br /> Total Xylenes 0.5 15. 3.6 ND <br /> TPH as Gasoline 50 290. 100. ND <br /> TPF/ Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br />' ND None Detected at or above the method reporting limit <br /> Raised MRL due to matrix interference. <br /> Approved by Date <br />' 3 <br /> 1921 Ringwood Avenue • San Jose, California 95131 • Telephone 4081437-2400 • Fox 4081437-9356 <br />