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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 H Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> MPDS Services Client Project ID Unocal#0123 1034 Central Ave,Tracy Sampled Dec 6, 1995 <br /> 2401 Stanwell Dr , Ste 300 Matrix Descript Water Received Dec 6, 1995 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Dec 28, 1995 <br /> Attention Jarrel Crider First Sample # 512-0563 <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 Ng/L Fig/L Ng/L Ing/L <br /> 512-0563 U-1 f ND ND ND ND ND <br /> 512-0564 U-2 r/ ND ND ND ND ND <br /> 512-0565 U-3�/ ND ND ND ND ND <br /> 512-0566 ES1 ND ND ND ND ND <br />• 512-0567 ES2 ND ND ND ND ND <br /> 512-0568 ES3 ND ND ND ND ND <br /> Detection Limits 50 0 50 0 50 050 050 <br /> Total Purgeable Petroleum Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as ND were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> gnature on File <br /> Alan B Kemp <br /> Project Manager Page 1 of 2 <br /> 5120563 MPD <1> <br />