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b80 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(6510)364-9233 <br /> Sequoia 404 N wi$et Lane walnut Creek CA 94598 (9Z5)988-9600 FAX(925)988-9473 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br />_ Blaine Tech Services Client Prof ID Shell 6131 Pacific Ave Sampled 02/24/99 <br /> 1680 Rogers Avenue Sample Descnpt MW-7 Received 02/25/99 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/10/99 <br /> Attention -FranThle Lab Number-9902D75-07 Repo rted-03f29f99— <br /> CC Batch Number GCO31099BTEX30A <br /> Instrument ID GCHP30 <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 5000 30000 <br /> Methyl t-Butyl Ether 250 1200 <br /> Benzene 50 5600 <br /> Toluene 50 3800 <br /> Ethyl Benzene 50 820 <br /> Xylenes (Total) 50 3000 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 322 Q <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br />— s <br /> r <br /> Project Manager Page ge <br />