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fftO <br /> Sequoia 404 Chesapeake Drrve Redwood City CA 94u63 (550)364-9600 FAX(§50)364;9233 <br /> 404 N Wiget Lane4 Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> a)— <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D f etalurn&CA 94954 (707)792-1865 FAX f707)792_0342 <br /> Cambria - - Client Pro' <br /> ID Shell 420 W-Keitleman Lane Sampled 10/29/98 µ <br /> 1144 65th St Suite C Sample Descript SB-C(11 5') Received 10/30/98 <br /> Oakland, CA 94608 Matrix SOLID Extracted 11/06/98 <br /> Analysis Method 8015Mod/8020 Analyzed 11/11/98 <br /> = Attention Aubrey Coal Lab Number 9811146-06 Reported 11 f 17f98 - <br /> QC Batch Number GC110698BTEXEXB - - - - -- - - - - <br /> Instrument ID GCHP31 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 1 0 <br /> Benzene N D0 0050 <br /> Toluene N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern 00050 N D <br /> Surrogates Control Limits % <br /> Trifluorotoluene % Recovery <br /> 4-Bromofluorobenzene 70 130 109 <br /> 60 140 92 <br /> Analytes reported as N D were not present above the stated omit of detection <br /> SEQUO ICAL - ELAP #1210 <br /> Pe n r <br /> Pro) t anager <br /> Page 14 <br />