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X141 l\ <br /> Sequoia <br /> 6$0 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N W4get Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 51nker Avenue Su-te 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> *PDS Services Client Project ID Unocal#0123, 1034 Central Ave Tracy Sampled Jun 10, 1996 <br /> 2401 Stanwell Dr , Ste 300 Matrix Descript Water Received Jun 10, 1996 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Jun 21, 1996 <br /> Attention Jarrel Crider First Sample # 606-0860 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> pg/L pg/L Ng/L pg/L pg/L <br /> 606-0860 U-1 63 ND 1 4 22 69 <br /> 606-0861 U-2 ND ND 054 1 0 ND <br /> 606-0862 U-3 ND ND ND ND ND <br /> 606-0863 ES-1 ND ND 064 ND 057 <br /> 606-0864 ES-2 ND ND 44 ND 3 8 <br /> 606-0865 ES-3 ND ND ND ND ND <br /> Defection Limits 50 0 50 050 050 050 <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 /> nature on File <br /> Alan B Kemp <br /> Project Manager Page 1 of 2 <br /> 6060860 MPD <1> <br />