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680 <br /> esap <br /> Redwood CLty CA <br /> 364-9600 FAX(650) 364-9233 <br /> 063 <br /> Sequoia 404 Nh Wlget�La prive Walt Creek CA 944 98 (9205)988-9600 FAX(925)988-9673 <br /> 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0 100 <br /> Analytical 1555 Induustrial`IBlvd Road North Ste d PetalumaCalosCA 94954 (707)792-1865 FAX(707)CA 94070-4111 (650)232 9600 FAX(6 0) 232-9612 <br /> Sherwood Labs Project Huckms Property Sampled 4/2199 <br /> P O Box 937 Project Number N/A Received 4/6/99 <br /> Hilmar,CA 95324 Project Manager Ste hang Rossow Reported 4/20/99 <br /> Volatile Oxygenate Compounds by EPA Method 8260A/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Anal zed Level Result Result Units Recov Limits % Limit % Nates* <br /> Batch, 9040118 pate Prenaled. 4115/99 Extraction Method. EPA 5030E IP/TI <br /> Bla n6 9040118-BL K I <br /> Tert-butyl alcohol 4/15199 ND ug/l 200 <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether ND 200 <br /> Surrogate 1 2-DCA-d4 500 504 600-140 101 <br /> 1.CS 9040118-BSI <br /> Methyl tert-butyl ether 4115199 500 542 ug/l 700-130 108 <br /> Surrogate 1,2-DCA-d4 11500 518 600-140 104 <br /> LCS Duu 9040118-BSDI <br /> °thy/tent-butyl ether 4/15/99 Soo 534 ug/l 700-130 107 25 0 0 930 <br /> rrogate 1 2-DCA-d4 500 51 6 600-140 103 <br /> quoia Analytical -Sacramento *Refer to end of repos t fur text of notes and definitions <br /> c <br /> Sandra R Hanson,Client Services Representative Page 4 of 5 <br />