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• COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 03/05/93 <br /> Project Te+chert Construction-Tracy/OF90-004 01 Service Request No SJ93-0323 <br /> • Sample Matrix Water <br /> • <br /> BTEX and TPH as Gasoline <br /> EPA Methods 503018020/California DHS LUFT Method <br /> 11g/L (Ppb) <br /> • <br /> • Sample Name MW-1 Method Blank <br /> Date Analyzed 03/15/93 03/15/93 <br /> Analyte MRL <br /> •• Benzene 0 5 NO ND <br /> Toluene 0 5 NO NO <br /> Ethylbenzene 0 5 ND NO <br /> h Total Xylenes 0 5 ND NO <br /> TPH as Gasoline 50 NO NO <br /> • <br />• <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Lima <br /> ND None Detected at or above the method reporting limit <br /> l <br /> Approved by Date Aln 22 1�3 <br /> 2 <br /> 19- Ringwood Avenue • Son Jose California 95131 • Telephone 4081437 2400 Fox 408/437 9356 <br />