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SEQUOIA ANALYTICAL � <br /> Y� 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX(415) 364-9233 <br /> Waterwork Client Project ID: #490,Thorpe /Weber Ave. Sampled: Apr 10, 1991 <br /> 1710 Main Street Matrix Descript Soil Received: Apr 10, 1991 I <br /> iEscalon, CA 95320 Analysis Method: EPA 5030/8015/8020 Analyzed: Apr 22, 1991 <br /> ;Attention: Bill Channell First Sample #: 104-1933 Reported Apr 25 1991 <br /> ,. <br /> TOTAL PETROLEUM FUEL HYDROCARBONS with BTEX DISTINCTION (EPA 8015/8020) <br /> Sample Sample Low/Medium B.P. Ethyl <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> mg/kg mg/kg mg/kg mg/kg mg/kg <br /> (ppm) (ppm) (ppm) (ppm) (ppm) <br /> 104-1933 T/W-G-E15 33 0.026 0.022 0.025 0.042 <br /> 104-1934 T/W-G-W15 13 N.D. 0.010 0.0057 0.016 <br /> Detection Limits: 1.0 0.0050 0.0050 0.0050 0.0050 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard. <br /> Analytes reported as N.D.were not present above the stated limit of detection. <br /> S <br /> EIA ANALYTICAL <br /> �/e W. Hac IManager 1041931.WAT <2> <br /> C � <br />