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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiset Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> Analytical 819 Straker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9Z1-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-034Z <br /> Blaine Tech Services Client Prol ID Chevron 9-4275/980326-G1 Sampled 03/26/98 <br /> 1680 Rogers Avenue Sample Descript MW-4 Received 03/27/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 04/02/98 <br /> Attention Fran Thie Lab Number 9803157-04 Reported 04J12198 <br /> QC Batch Number GC040298STEX07A _ <br /> Instrument ID GCHP7 <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 65 <br /> Methyl t-Butyl Ether 25 1300 <br /> Benzene 0 50 1 9 <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Unidentified HC C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 107 <br /> Analytes reported as N D ere iot present above the stated limit of detection <br /> SEQUO YTI AL - ELAP #1210 <br /> y Penner <br /> ect Manager Page 12 <br />