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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> 404 N W19et hne Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)911 0100 <br /> 40M <br /> PDS Services Client Project ID Unocal#5886,2701 W March Ln Stockton Sampled Dec 6, 1996 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descript Water Received Dec 6, 1996 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Dec 23, 1996 <br /> Attention Jarrel Crider First Sample# 612-0681 <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- Ng/L µg/L rig/L Mg/L <br /> 612-0681 MW-1 ND ND ND ND ND <br /> 612-0682 MW-2 ND ND ND ND 60 <br /> 612-0683 MW-3 ND ND ND ND ND <br /> Detection Limits 50 0 50 050 0 50 050 <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 /> 09nature on File <br /> Alan B Kemp <br /> Project Manager Page 1 of 2 <br /> 6120681 MPD <1> <br />