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c. <br /> ' y a <br /> COLUMBIA ANALYTICAL SERVICES, INC. <br /> i f <br /> Analytical Report <br /> Client: EMCON Associates Date Received: 03/05/93 <br /> Project: Teichert Construction-Tracy/OF90-004.01 Service Request No.: SJ93-0323 <br /> Sample Matrix: Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 503018020/California DNS LUFT Method <br /> pg/L (ppb) <br /> I <br /> Sample Name: MW-1 Method Blank <br /> Date Analyzed: 03/15/93 03/15/93 <br /> Anal-e MRL <br /> Benzene 0.5 ND ND <br /> Toluene 0.5 ND ND <br /> Ethylbenzene 0.5 ND ND <br /> I <br /> Total Xylenes 0.5 ND ND <br /> TPH as Gasoline 50 ND ND <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> Approved by: Date: <br /> 2 <br /> 19^ ' Ringwood Avenue • Son Jose. California 95131 • Telephone 4081437.2400 • Fox 4081437-9356 <br />