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® 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364 9233 <br /> Sequoia 404 N Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)92t-9600 FAX(916)921 0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792 0342 <br /> 0 <br />�— Blaine Tech Services Client Prod ID Shell 6131 Pactfic Ave Sampled 02/24/99 <br /> 1680 Rogers Avenue Sample Descript VEW 2 Received 02/25/99 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/07/99 <br /> Attention Fran Thle Lab-Number-9902D75`08 - YReported 03J29f99—, <br /> QC Batch Number GCO30799BTEX22A <br /> Instrument ID GCHP22 <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 10000 75000 <br /> Methyl t-Butyl Ether 250 310 <br /> Benzene 100 2400 <br /> Toluene 100 14000 <br /> Ethyl Benzene 100 1400 <br /> Xylenes (Total) 100 14000 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 84 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> Project Manager Page 15 <br />