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. Sequoia 680 Chesapeake Drive Redwood Gty,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 /> flip Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921-0100 <br />' Blaine Tech Services - Client Prol ID -- Shell Stockton/980112-H2- Sampled 01/13/98 <br /> 1680 Rogers Avenue Sample Descrlpt MW-4 Received 01/14/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 01/27/98 <br /> Attention_Fran Th1e _ _ Lab Number 9801694-06 Reported_ 01130198 ; <br /> QC Batch Number GC0127986TEX07A - <br /> Instrument ID GCHP07 <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 25 N D <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 103 <br /> Analytes reported as lel D were not present above the stated limit of detection <br /> SEQUOIA A CAL - ELAP #1210 <br /> Peggy Penner <br /> Project Manager Page 17 <br />