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Sequoia 680 Chesapeake Drive Redwood CityCA 94063 (650)364-9600 fA1X(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(92 5)9BB-9673 <br /> Analytical 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)792-1665 TAX(707)792-0342 <br /> Opg�adient Environmental Client project 10 Conrady Property Sampled Sep 24, 1098 <br /> P O Box 8002 Sample Descnpt Water, MW-4 Received Sep 24, 1998 <br /> Stockton,CA 95208 Analysis Method EPA 5030/8260 Analyzed Oct 7, 1998; <br /> Attention Vic Cherven Lab Number S809299 -04 Reported Oct 8, 1998 <br /> OXYGENATES by GC/MS (EPA 8260) <br /> Analyte Reporting Limit Sample Results <br /> pg/L. Vg/L <br /> Tertiary butanol 100 N D <br /> Methyl tertiary butyl ether(MTBE) 2 0 N D <br /> Di-Isopropyl ether(DIPS) 20 N D <br /> Ethyl tertiary butyl ether(ETRE) 2 0 N D <br /> Tertiary amyl methyl ether(TAME) 2 0 N D <br /> Surrogate Control Limits,% % Recovery <br /> 1,2-Dlchloroethane-d4 50-150 90 <br /> Analytes reported as N D were not detected at or above the reporting Itmil <br /> SEQUO A ANALYTICA , ELAP#1271 <br /> liSchneider <br /> ra�ect Manager/Sacramento Laboratory <br /> S309299 UES <4> <br />