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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364,;923 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> • 819 Striker Avenue Suite 6 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Anal teal 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792 1865 FAX(707)792-0342 <br /> Cambria Client Proj ID Shell 2494 Fremont Sampled 04/30/98 <br /> 270 Perkins Ave Sample Descript S-1-65' 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 9805086-03 Reported 05f 18/98 <br /> OC 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 250 1600 <br /> Methyl t-Butyl Ether 62 N D <br /> Benzene 1 2 N D <br /> Toluene 12 - 21 <br /> Ethyl Benzene 1 2 11 <br /> Xylenes (Total) 1 2 56 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 135 Q <br /> 4-Bromofluorobenzene 60 140 90 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA L ICAL - ELAP #1210 <br /> Pen <br /> Project Manager Page s <br />