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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> 404 iii Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suitc 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Enviros Client Prol ID Shell 4315 Waterloo, Stockton Sampled 02/21/96 <br /> 270 Perkins Ave Sample Descript SB-5-8 Received 02/22/96 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 02/27/96 <br /> Analysis Method 8015Mod/8020 Analyzed 02/28/96 <br /> Attention Joe Neely Lab Number 9602G24-03 Reported 03101196 <br /> JC Batch Number GCO22796BTEXEXA <br /> nstrument 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 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 /> Tnfluorotoluene 70 130 85 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> regory <br /> ct Manager Page 3 <br />