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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9Z33 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> frilly Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> 1455 McDoweil Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792 0342 <br /> Blaine Tech Services Client Prol ID Chevron 9-1848/980520-1-2 Sampled 05/20/98 <br /> 1680 Rogers Avenue Sample Descrlpt C-1 Received 05/22/98 <br /> San.lose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 05/29/98 <br /> Attention Fran Th1e Lab Number 9805E65-01 Reported 06JO4198 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> u9/L ug/L <br /> TPPH as Gas 50 110 <br /> Methyl t-Butyl Ether 25 46 <br /> Benzene 0 50 062 <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 32 <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trltiuorotoluene 70 130 80 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANA YTICAL - ELAP #1849 <br /> IlWe ry <br /> ect Manager Page 2 <br />