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i <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 6) 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 /> Cambria Client Prof ID Shell 2575 Country Club Blvd Sampled 12/11/97 <br /> 270 Perkins Ave Sample Descript MW-12-865 Received 12/19/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 12/22/97 <br /> Analysis Method 8015Mod/8020 Analyzed 12/23/97 <br />' Attention Joe Neely Lab Number 9712CSO-08 Reported 12131197 „ <br /> OC Batch Number GC122297BTEXEXB - <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 10 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 /> Trlfluorotoluene 70 130 91 <br /> 4-Bromofluorobenzene 60 140 78 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Ahzzo� <br /> reigory <br /> Project Manager Page e <br />