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Sequoia 680 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 /> �,,,�► Analytical 819 Striker Avenue,Suite 8 Satramegto,CA 95834 (916) 921-9600 FAX (916)921 0100 <br /> Cambria Client Prol ID Shell 2575 Country Club Blvd Sampled 12/11/97 <br /> 270 Perkins Ave Sample Descript MW-14-5G Received 12/19/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 12/22/97 <br /> Analysis Method 8015Mod/8020 Analyzed 12/22/97 <br /> Attention Joe Neely Lab Number 9712C80-01 Reported 12131197 <br /> _ - - - <br /> QC 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 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 /> Trlfluorotoluene 70 130 80 <br /> 4-Bromofluorobenzene 60 140 79 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> e regory <br /> Project Manager Page 1 <br />