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Sequoia 680 Ctiesapcake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 7233 <br /> 404 N W,S,t Lane Watnut Creck CA 94598 (510) 988 9600 FAX(510)989 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95814 (916) 921 9600 FAX(916)921 0100 <br /> PDS Services Client Project ID Tosco#5886 2701 W March Ln Stockton Sampled May 2, 1997 <br /> 401 Stanwell Dr , Ste 300 Matrix Descnpt 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 # 705-0197 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> ug/L ug/L Ng/L ug/I- pg/L <br /> 705-0197 MW-1 NO ND ND NO ND <br /> 705-0198 MW-2 NO 43 NO NO NO <br /> 705-0199 MW-3 NO 32 ND ND NO <br /> 705-0200 MW 4D NO NO NO NO NO <br /> 705-0201 MW-4S NO NO ND NO NO <br /> 705-0202 MW 5D ND NO NO NO NO <br /> 705-0203 MW-5S ND NO NO NO NO <br /> 705-0204 MW-6D ND ND ND ND ND <br /> 705-0205 MW-6S ND NO ND NO NO <br /> 705-0206 MW-7D NO ND NO ND NO <br /> Detection Limits 50 050 050 050 050 <br /> Total Purgeable Petroleum hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as NO were not present above the stated limit of detection <br /> ANALYTICAL,SEQUOIA ANA , #1271 <br /> Oanature on File <br /> n B Kemp <br /> Project Manager Page 1 of 2 <br /> 7050197 MPD <1> <br />