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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (415) 364 9600 FAX(415)364 9233 <br /> ,5)— Analytical 1900 Bates Avenue,Suite L Concord, CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> qwr B 19 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> OMPDS Services Tient Project Ii) Unocal#2859 1665 Pacific Avenue,Stockton Sampled Feb 7, 1995 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descript Water Received Feb 7, 1995 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Reported Feb 23, 1995 <br /> Attention Sarkis Karkarian First Sample # 502-0605 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sample Purgeable Ethyl Total <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> Ng/L Ng/L rug/L p9/L ug/L <br /> 502-0605 MW1 ND ND ND ND ND <br /> 502-0606 MW2 120,000 13,000 60,000 5,500 29,000 <br /> 502-0607 MW3 1,700 330 ND 69 82 <br /> 502-0608 MW4 69 ND ND ND ND <br /> 502-0609 MW5 ND ND ND ND ND <br /> 502-0610 MW6 120 1 1 ND 59 24 <br /> 502-0611 MW7 ND ND ND ND ND <br /> 502-0612 MW8 70* ND ND ND ND <br /> 502-0613 MW9 77* ND ND ND ND <br /> Hydrocarbons detected did not appear to be gasoline <br /> Detection Limits 50 050 050 0 50 650 <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 /> Oignature on File <br /> Alan B Kemp <br /> Project Manager <br /> 5020605 MPD <1> <br />