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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> [455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-034Z <br /> • <br /> Cambria Client Prol ID Shell 2494 Fremont Sampled 04/30/98 <br /> 270 Perkins Ave Sample Descript S-1-60' Received 05/01/98 <br /> " Sonoma, CA 95476 Matrix SOLID Extracted 05/12/98 <br /> Analysis Method 8015Mod/8020 Analyzed 05/12/98 <br /> Attention Mike Murphy Lab Number 9805086-02 Reported 05/18198 <br /> QC Batch Number GCO51298BTEXEXA <br /> Instrument ID GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas .. 500 5400 <br /> Methyl t-Butyl Ether 12 N D <br /> Benzene 2 5 N D <br /> Toluene 25 .. 120 <br /> Ethyl Benzene 25 44 <br /> Xylenes (Total) 25 260 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 1990 <br /> 4-Bromofluorobenzene 60 140 3 Q <br /> Analytes reported as D w re not present above the stated limit of detection <br /> SEQUO AL [CAL - ELAP #1210 <br /> Peggy Penner <br /> Prolect Manager Page 6 <br />