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Sequoia680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364.9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> i W <br /> Analytical 819 Striker Avenue Suite B Sacramento CA 95834 {916}921-9600 FAX(916)921-0100 <br /> r 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> • <br /> " Cambria Client Prod ID Shell 2494 Fremont Sampled 04/30/98 ,,, <br /> 270 Perkins Ave Sample Descrlpt S-3-65' Received 05/01/98 <br /> t' Sonoma, CA 95476 Matrix SOLID Extracted 05/12/98 <br /> Analysis Method 8015Mod/8020 Analyzed 05/12/98 <br /> Attention Mike Murphy Lab Number 9805086-05 Reported 05J18J98 <br /> TQC Batch Number GC051298BTEXEXA <br /> Instrument ID GCHP22 <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 1 0 N D <br /> Methyl t-Butyl Ether 0 025 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 96 <br /> 4-Bromofluorobenzene 60 140 96 <br /> • <br /> Analytes reported as N D were not present alcove the stated lima of detection <br /> SEQUOI LYTiCAL - ELAP #1210 <br /> PW nner <br /> Project Manager Page 15 <br />