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Sequoia 660 Chesapeake Drive Redwood Cuty,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> (1) 404 N Wtgct Lane Walnut Creek,CA 94596 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite B Sacramento CA 95834 (9t6) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services Client Proj ID Shell Stockton/970709-F1 Sampled 07/09/97 <br /> " 1680 Rogers Avenue Sample Descript VEW-1 Received 07/10/97 <br /> San Jose, CA 95112 Matrix LIQUID ; <br /> Analysis Method 8015Mod/8020 Analyzed 07/17/97 <br /> Attention Fran The Lab Number 9707592-08 " Reported 07J23197 <br /> QC Batch Number GC071797BTEX02A- <br /> Instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> i <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 ... 21 <br /> Benzene 0 50 N D <br /> Toluene 0 50 ND <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 90 <br /> Analytes reported as N D ere not present above the stated limit of detection <br /> SEQUOI L ICAL - ELAP #1210 <br /> y Penner <br /> Project Manager Page 8 <br />