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680 Chesapeake Drive Redwood Clty.CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N.Wlget Lane Walnut Creek,CA 94598 (915)988-9600 FAX(925)988-9673 <br /> a- ) Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd.North.Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> settler-Ryan- Dublin Client hrojecf"ID: Tosco SP#11195,"Lathrop" Sampled. Dec 31, 1998. <br /> 6747 Sierra Court, Suite J Sample Matrix: Soil Received: Dec 31 1998:, <br /> Dublin, CA 94568 Analysis Method: EPA 5030/8015 Mod./8020 Reported: Jan 20, 1999:;::'_ <br /> Attention: Clyde Galantine First Sample#: 901-0016 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D. I.D. I.D. I.D. I.D. I.D. <br /> mg/Kg 901-0016 901-0017 901-0018 901-0019 901-0020 901-0021 <br /> TX-7-11.5 TX-8-11.5 TL-1-2.5 TL-1-10.5 TL-2-3 TL-3-4 <br /> Purgeable <br /> Hydrocarbons 1.0 N.D. N.D. 50 820 N.D. N.D. <br /> Benzene 0.0050 N.D. N.D. N.D. N.Q. N.D. N.D. <br /> Toluene 0.0050 N.D. N.D. N.D. 0.56 N.D. N.D. <br /> Ethyl Benzene 0.0050 N.D. N.D. N.D. 12 N.D. N.D. <br /> Total Xylenes 0.0050 N.D. N.D. N.D. 85 N.D. N.D. <br /> MTBE 0.050 29 22 N.D. N.D. 0.17 N.D. <br /> Chromatogram Pattern: Unidentified Gasoline& <br /> Hydrocarbons Unidentified <br /> >C9 Hydrocarbons <br /> >C7 <br /> Quality Control Data <br /> Report Limit Multiplication Factor: 5.0 1.0 50 100 1.0 1.0 <br /> Date Analyzed: 1/6/99 1/7/99 1/6/99 1/6/99 1/7/99 1/7/99 <br /> Instrument Identification: HP-4 HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, %: 93 82 * * 80 82 <br /> (OC Limits = 40-140%) <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 Please Nate: <br /> " Surrogate recovery below control limit due to dilution. <br /> iianne Fegley <br /> Project Manager <br /> 9010010.GET <2> <br />