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Sequoia 6B°Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(915)988-9673 <br /> Analytical <br /> SM Striker Avenue Suite 8 Sacramento CA 95834 (916)92I-%00 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> lk ^ t o '6-`d "" ` c :: :a . .... .r,,,.v .,ray -• i v t <br /> ler-kyan- Dublin Y A nt`Project ID Unocal SS#0187,'Stockton �� y —Sam;.pledr V Feb 5,"1999 <br /> 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# 902-066.3 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit ID I.D. 11.13 1.13 ID ID <br /> pg/L 902-0663 902-0664 902-0665 902-0666 902-0667 902-0668 <br /> NP-1-65 NP-1-22 U-9 Dup-2 EB-2 U-3 <br /> Purgeable <br /> Hydrocarbons 50 73,000 22,000 200 28,000 N D 27,000 <br /> Benzene 050 7,000 930 11 4,300 N D 4,200 <br /> Toluene 050 19,000 190 53 2,300 0 53 2,200 <br /> Ethyl Benzene 0 50 2,400 2,000 42 1,000 N D 300 <br /> •Total Xylenes 0 50 14,000 2,300 25 4,000 1 2 3,800 <br /> Chromatogram Pattern Gasoline Gasoline& Gasoline Gasoline -- Gasoline <br /> Unidentified <br /> Hydrocarbons <br /> C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 200 100 1 0 100 1 0 100 <br /> Date Analyzed 2/11/99 2/10/99 2/10/99 2/11/99 2/10/99 2/10/99 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % 108 114 104 115 105 114 <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 /> QUOTA ANALYTICAL, #1271 <br /> Tfi <br /> anne Fegl'ey <br /> Project Manager <br /> 9020651 GET <3> <br />