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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364.9600 FAX(650)364-9233 <br /> 404 N.Wig,,Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988.9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)92 <br /> �,r Analytical <br /> Blaine Tech Services Client Proj. ID: Chevron 9-8632/970902-F2 Sampled: 09/02/97 <br /> 1680 Rogers Avenue Sample Descript: TB Received: 09/03/97 <br /> San.dose, CA 95112 Matrix: LIQUID <br /> Analysis Method: 8015Mod/8020 Analyzed: 09/08/97 <br /> Attention: Fran Thie Lab <br /> Number: 970912fi-0fi <br /> Re orted: 09 16 97 <br /> ............................................................................................................................................................................... ..............................P.............................1.........1........- - <br /> .:........ ............................................ ............. ...................................................................... ............................................................................................. ................. <br /> QC Batch Number: GCO90897BTEX21A <br /> I Instrument ID: GCHP21 <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 2.5 N.D. <br /> Benzene 0.50 N.D. <br /> Toluene 0.50 N.D. <br /> Ethyl Benzene 0.50 N.D. <br /> Xylenes (Total) 0.50 N.D. <br /> Chromatogram Pattern: ; <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 90 <br /> j <br /> j <br /> 1 <br /> I <br /> Analytes reported as N.D.were not present above the stated limit of detection. <br /> SEQUOI YTICAL - ELAP #1210 <br /> i Peggy P er <br /> ' Project Manager Page: 16 <br />