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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 Stnker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Cambria -- - _ Client Prod ID Shell 2575 Country Club Sampled 12/12/97 <br /> 270 Perkins Ave Sample Descript MW-13-A1 Received 12/19/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 12/23/97 <br /> Analysis Method 8015Mod/8020 Analyzed 12/24/97 <br /> I Attention ,Joe Neely - _ Lab Number 9712C93-01 _ _ Reported 01 j05j98 ' <br /> QC Batch Number GC122397BTEXEXB <br /> Instrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Lima Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 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 70 130 117 <br /> 4-Bromofluorobenzene 60 140 82 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Am <br /> `lVe tregory <br /> Project Manager Page 2 <br />