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COLUMBIA ANALYTICAL SERVICES, INC. <br />' Analytical Report <br /> Client: EMCON Associates Date Received: 12/08/92 <br /> Project: Teichert Construction/01790-002.01 Service Request No.: SJ92-1540 <br /> Sample Matrix: Water <br /> BTEX and TPH as Gasoline <br />' EPA Methods 5030/8020/California DHS LUFT Method <br /> Ng/L Ippb? <br />' Sample Name: MW-1 3 Method Blank Method Blank <br /> Date Analyzed: 12/11192 12/08/92 12111/92 <br /> Analyto MRL <br /> Benzene 0.5 490• ND ND <br /> Toluene 0.5 300. ND ND <br /> Ethylbenzene 0.5 33. ND ND <br /> Total Xylenes 0.5 470. ND ND <br /> TPH as Gasoline 50 8,800. ND ND <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> 9 <br /> Approved by: <br /> Date: / <br /> ' 3 <br /> 1921 Ringwood Avenue • Son Jose. California 95131 • telephone 4081437.2400 Fox 4081437 935b <br />