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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 /> X111 Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> QPDS Services Client Project ID Unocal#2859, 1665 Pacific Ave ,Stockton Sampled Feb 14, 1997 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descrlpt Water Received Feb 14, 1997 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Mar 4, 1997 <br /> Attention Jarrell Crider First Sample # 702-0891 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> N9/L Fig/L Ing/L pg/L Fig/L <br /> 702-0891 MW-1 NO NO NO NO NO <br /> 702-0892 MW-2 110,000 1,500 29,000 4,100 20,000 <br /> 702-0893 MW-3 NO NO NO NO NO <br /> 702-0894 MW-4 120 NO 069 NO NO <br /> 702-0895 MW-5 NO NO NO NO NO <br /> 702-0896 MW-6 NO NO NO NO NO <br /> 702-0897 MW-7 NO NO NO NO NO <br /> 702-0898 MW-8 NO NO ND NO NO <br /> 702-0899 MW-9 53* NO NO NO NO <br /> * Hydrocarbons detected did not appear to be gasoline <br /> Detection Limits 50 050 050 050 050 <br /> Total Purgeabie 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 /> signature on File <br /> Alan B Kemp <br /> Project Manager Page 1 of 2 <br /> 7020891 M P D <1 <br />