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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 /> full' Analytical 819 Striker Avenue Suite 8 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)79Z-034Z <br /> Blaine Tech Services Client Proj ID Chevron 9-2033/980521-L1 Sampled 05/21/98 <br /> 1680 Rogers Avenue Sample Descript MW-3 Received 05/22/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 05/28/98 <br /> Attention Fran Thle Lab Number 9805E75-03 Reported 06j03j98 <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 500 1100 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 50 33 <br /> Toluene 50 N D <br /> Ethyl Benzene so N D <br /> Xylenes (Total) - so - is <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 100 <br /> i <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1849 <br /> ary <br /> Project Manager Page 10 <br /> g� <br />