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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 4404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988-9673 <br /> 11%0- Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> IRPDS Services Client Project ID Unocal#6981,4707 Pacific Ave,Stockton Sampled Jan 24-25, 1996 <br /> 2401 Stanwell Dr, Ste 300 Matrix Descnpt Water Received Jan 25, 1996 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015 Mod /8020 Reported Feb 9, 1996 <br /> Attention Jarrel Crider First Sample # 601-1538 <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 µg/L pg/L pg/L pg/L <br /> 601-1538 MW-1 ND ND ND ND ND <br /> 601-1539 MW-2 2,100 510 29 ND 11 <br /> 601-1540 MW-3 ND ND ND ND ND <br /> 601-1541 MW-4 ND 14 ND ND ND <br /> 601-1542 MW-5 86 69 085 ND 084 <br /> 601-1543 MW-6 ND ND ND ND ND <br /> 601-1544 MW-7 76 18 ND ND 055 <br /> 601-1545 MW-8 ND ND ND ND 065 <br /> 601-1546 MW-9 ND ND ND ND ND <br /> 601-1547 MW-10 ND ND ND ND ND <br /> etectian Limits 50 050 050 050 050 <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 /> 69nature on File <br /> Alan B Kemp <br /> Project Manager Page 1 of 2 <br /> 6011538 MPD <1> <br />