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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br />*P0S Services Client Piaject I0 Unocal#5098,5606 Pacific Avenue,Stockton Sampled ` Feb 8, 1995 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descrlpt Water Received Feb 8, 1995 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Feb 24, 1995 <br /> Attention Sarkis Karkanan First Sample# 502-0647 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> pg/L pg/L pg/L pg/L pg/L <br /> 502-0647 MW10 82 12 ND ND ND <br /> 502-0648 MW11 96,000 11,000 19,000 1,800 10,000 <br /> 502-0649 MW12 22,000 550 700 280 1,400 <br /> 502-0650 MW13 ND ND ND ND ND <br /> 502-0651 MW14 ND ND ND ND ND <br /> 502-0652 MW15 ND ND ND ND ND <br /> etection Limits 50 050 050 050 050 <br /> Total Purgeable Petroleum Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as ND were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> 0gnature an File <br /> Alan B Kemp <br /> Project Manager <br /> 5020647 MPD <1> <br />