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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N 1Mget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> r > y, of :,, , -�'. i. , -.. ., o <br /> n Gettler=Ryan - Dublin` V Client Pro'ect Ib Unocal SS#o187,`Siockton H Sampled Feb 5,r 1999 <br /> 3L 6747 Sierra Court, Suite J Sample Matrix Water Received Feb 5, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Reported Feb 12, 1999•, <br /> Attention Deanna Harding First Sample# 902-0657 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I.D. I.D. I D I D <br /> pg/L 902-0657 902-0658 902-0659 902-0660 902-0661 902-0662 <br /> U-7 U-8 NP-2-116 NP-2-60' NP-2-22 NP-1-111 <br /> Purgeable <br /> Hydrocarbons 50 N D 73 920 9,700 690 1,800 <br /> Benzene 050 N D N D 86 950 15 19 <br /> Toluene 050 1 4 15 90 290 N D 18 <br /> Ethyl Benzene 050 N D N D 24 710 94 N D <br /> i <br /> Total Xylenes 0 50 1 7 20 130 680 18 210 <br /> Chromatogram Pattern -- Gasoline Gasoline Gasoline Gasoline Gasoline& <br /> Unidentified <br /> Hydrocarbons <br /> C6-1012 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 20 100 10 10 <br /> Date Analyzed 2/10/99 2/10/99 2/10/99 2/11/99 2/10/99 2/11/99 <br /> Instrument Identification HP-5 HP-5 HP-5 HP-5 HP-5 HP-5 <br /> Surrogate Recovery, % 96 95 87 91 91 89 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> UOIA ANALYTICAL,#1271 <br /> IEanne Fegley <br /> reject Manager <br /> 9020651 GET c2> <br />