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Sequoia 680 Chesapeake Drive Redwood City CA 9491 (51 <br /> 3 0)364-9600 FAX(550)364-9233 <br /> (D— 404 N Wiget Lane Walnut Creek.CA 94598 (510)988-9600 FAX(510)988-9573 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Prol ID Shell 141 N El Dorado Sampled 04/22/98 <br /> " 1680 Rogers Avenue Sample Descript MW-5 Received 04/24/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 05/04/98 L= <br /> Attention Fran Thie - - - Lal?Number 9804GS"7 _ _ _ _ = Reported O5JI4198 - <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether .. 25 210 <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 68 Q <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA A YTICAL - ELAP #1210 <br /> Peggy <br /> Pt Mahager Page �7 <br />