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• 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> Sequoia <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> a- Analyt eel 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921- 9600 FAX 916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 707 792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Proj-ID Shell 141 N EI Dorado Sampled 04/22/98 <br /> 1680 Rogers Avenue Sample Descript VEW-1 Received 04/24/98 µ <br /> San Jose, CA 95112 Matrix LIQUID _ <br /> Analysis Method 8015Mod/8020 Analyzed 05/04/98 „ <br /> Attention Fran Thie Lab Number 9804G89-08 Reported 05J14198 <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 - - .... 180 <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (rotal) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 89 <br /> 0 <br /> Analytes reported a were not present above the stated limit of detection <br /> SEQUOI N LVTICAL - ELAP #1210 <br /> Peggy Penner <br /> Project Manager Page 8 <br />