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680 Chesapeake Drive Redwood City CA 94063 (650) 3649600 FAX(650)364-9233 <br /> Sequoia 404 N W1get Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue 5ulte 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 41� Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX{707}792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Gettler-A an -Dublin Client project ID Unocal 88#5098, Stockton 'Sampled Jun 17, 1'999 <br /> 6747 Sierra Court, Suite J Sample Matrix Water Received Jun 18, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Reported Jun 30, 1999 <br /> i Attention Deanna Harding First Sample# 906-1562 <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. LD I.D. <br /> lig/L 906-1562 906-1563 906-1564 906-1565 906-1566 906-1567 <br /> TB-LB MW-10A MW-10 MW-11 MW-12 MW-13 <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D 23,000 550 N D <br /> Benzene 050 N D N D N D 6,000 23 N D <br /> Toluene 0 50 N D N D N D 250 N D N D <br /> Ethyl Benzene 050 N D N D N D 250 61 N D <br /> Total Xylenes 050 N D N D N D 1,900 N D N D <br /> Chromatogram Pattern - -- Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 200 10 1 0 <br /> Date Analyzed 6/25/99 6/25/99 6/25/99 6/25/99 6/25/99 6/25/99 <br /> Instrument Identification HP-4 HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 89 89 89 97 89 92 <br /> (OC 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 /> SEQUOIA ANALYTICAL, #1271 <br /> anne Fegley <br /> Project Manager <br /> 9061562 GET <1 <br /> cx� <br />