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Sequoia W0 Chesapeake Drive Redwood City,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 /> 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916)9Z1-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North,Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 2vizu;aS2 <br /> Gettler RyanlGeostrategles Client Prof—ID Chevron 9-6171, S ockto ,-Sa d 051198 <br /> 5747 Sierra Court Suite J Sample Descrlpt TB-LB �u e 'I<red 05/11/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020rm* 5/98 <br /> Attention Deanna Harding - - _ Lab Number 9805584-01__ - _ _ _ Re5porta_2j98_ <br /> GE��RA <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 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 97 <br /> analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41849 <br /> Anil <br /> re ory <br />]ro]ect Manager Page 1 <br />