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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget lane Walnut Creek, CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical Bt9 Sinker Avenue,Suite 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-4-25 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- 9602G24-01 _ Reported 03101196 <br />:)C 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 44 <br /> Methyl t-Butyl Ether 0 025 38 <br /> Benzene 00050 00082 <br /> Toluene 00050 0 024 <br /> Ethyl Benzene 00050 0 058 <br /> Xylenes (Total) 00050 0 66 <br /> Chromatogram Pattern C8-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 93 <br />• <br /> Analytes reported as H D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - el-AP 01210 <br /> Gregory <br /> Cf Manager Page � <br />