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` 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9Z33 <br /> Sequoia 404 N Wiget Lane Walnut Creek.CA 94598 (510)988-9600 PAX(510)988-9673 <br /> Analytical <br /> 819 Striker Avenue Suite$ Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blame Tech 8ervlces - - Client Prol ID Shell 141 N El Dorado - Sampled 04/22/98 - <br /> 1680 Rogers Avenue Sample Descrlpt VEW-4 Received 04/24/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> ' Analysis Method 8015Mod/8020 Analyzed 05/04/98 ;- <br /> Attention Fran Thie Lab Number_ 9804G89-11 - - - _ _ Reported 05J14j98 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detectson Limit Sample Results <br /> ug/L. ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether .... .. 25 ... .... 4.9 <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 90 <br /> Analytes reported a D were not present above the stated limit of detection <br /> SEQU N LVTICAIL - ELAP #1210 <br /> Pe g P nner <br /> Projec anager Page 12 <br />