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Sequoia <br />680 Chesapeake DTIVe Redwood City CA 94063 <br />404 N Wiget Lane Walnut Creek CA 94598 <br />(650) 364 9600 <br />(925) 988-9600 <br />FAX (650) 364-9233 <br />FAX (925) 988-9673 <br />10 <br />819 Striker Avenue Suite 8 Sacramento CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 <br />1551 Industrial Road San Carlos CA 94070-4111 <br />(707) 792-1865 <br />(650) 232-9600 <br />FAX (707) 792-0342 <br />FAX (650) 232-9612 <br />rier-Ryan <br />N D <br />N D <br />N D <br />- Dublin <br />Client Project ID Chevron #9-5775, Lodi <br />Sampled <br />Jan 25-27, 1999 <br />6747 Sierra Court, Suite J <br />Sample Matrix Sod <br />Received <br />Jan 29, 1999 <br />Dublin, CA 94568 <br />Analysis Method EPA 5030/8015 Mod /8020 <br />Reported <br />Feb 10, 1999 <br />Attention Barbara Slem(nski <br />First Sample # 902-0080 <br />Revised <br />Apr 28, 1999 <br />TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE <br />Ethyl Benzene <br />Reporting <br />Sample Sample Sample Sample <br />Sample <br />Sample <br />Analyte Limit <br />I D I D I D I D <br />I D <br />I D. <br />mg/Kg <br />902-0080 902-0081 902-0082 902-0083 <br />902-0084 <br />902-0085 <br />00073 <br />MW4-45 MW4-50 MW4-53 5 MW4-61 <br />MW4-64 5 <br />SB1-30 <br />Purgeable <br />1 0 <br />10 <br />1 0 <br />10 <br />1 0 25 <br />Date Analyzed <br />2/5/99 <br />Hydrocarbons <br />10 <br />N D <br />N D <br />N D <br />N D <br />N D <br />160 <br />Benzene <br />00050 <br />N D <br />N D <br />N D <br />0 058 <br />00081 <br />081 <br />Toluene <br />00050 <br />N D <br />N D <br />N D <br />N D <br />N D <br />40 <br />Ethyl Benzene <br />00050 <br />N D <br />N D <br />N D <br />N D <br />N D <br />25 <br />Dotal Xylenes <br />00050 <br />0 019 <br />N D <br />0 014 <br />00073 <br />N D <br />18 <br />MTBE <br />0 050 <br />N D <br />0 062 <br />0 071 <br />N D <br />020 <br />95 <br />Chromatogram Pattern <br />-- <br />- <br />-- <br />-- <br />-- <br />Gasoline & <br />Unidentified <br />Hydrocarbons <br />C6 C12 <br />lauainy L:ontrol Uata <br />Report Limit Multiplication Factor <br />1 0 <br />10 <br />1 0 <br />10 <br />1 0 25 <br />Date Analyzed <br />2/5/99 <br />2/5/99 <br />2/5/99 <br />2/5/99 <br />2/5/99 2/5/99 <br />Instrument Identification <br />HP -4 <br />HP -4 <br />HP -4 <br />HP -4 <br />HP -4 HP -4 <br />Surrogate Recovery, % <br />84 <br />90 <br />87 <br />82 <br />80 <br />(QC 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 />UOIA ANALYTICAL, #1271 <br />anne Fegley <br />Project Manager <br />Please Note <br />* Surrogate recovery below detection limit due to dilution <br />9020044 GET <7> <br />