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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> Analytical ei9 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> QPDS Services Client Project ID Tosco#5886,2701 W March Ln, Stockton Sampled May 2, 1997 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descript Water Received May 3, 1997 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported May 14, 1997 <br /> Attention Jarrel Crider First Sample# 705-0207 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> Ng/L Mg/L Ng/L Ing/L Fig/L <br /> 705-0207 MW-7S ND ND ND ND ND <br /> 705-0208 ES-1 ND ND ND ND ND <br /> 705-0209 ES-2 ND ND ND ND ND <br /> 705-0210 ES-3 ND ND ND ND ND <br /> S <br /> etection Limits so 050 0 50 050 050 <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 /> nature on File <br /> Alan B Kemp <br /> Project Manager Page 1 of 2 <br /> 7050197 MPD <3> <br />