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680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> a- ) <br /> Analytical 819 Straker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9Z!-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707) 792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Prol ID Shell 2575 Country Club Blvd Sampled 07/29/98 <br /> 1680 Rogers Avenue Sample Descript MW-6 Received 07/30/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/10/98 <br /> Attention_Fran Thie Lab Number_ 9807H87-05 Reported 08119198 <br /> QC Batch Number GC081098BTEX02A <br /> Instrument ID GCHP2 <br /> Total Purgeable 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 95 <br /> Benzene 0 50 052 <br /> Toluene 0 50 0 84 <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 0 50 077 <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 121 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOI LYTICAL - ELAP #1271 <br /> 9y Pe <br /> lect Manager Page 15 <br />