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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364-9233 — <br /> 4D 404 N Wiget Lane Walnut Creek CA 94598 {925)988 9600 FAX(925)988 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 {916)921-9600 FAX(916)9Z1-0100 <br /> Blv <br /> Analytical 1555 Industrial <br /> Road San <br /> North Ste D PetSanaluma CarlosCA 94954 (707)CA 94070 41 1 1 (650)232- FAX 1650)232-96 <br /> 19600 865 FAX�707) 412 <br /> SECOR International Project ARCO 2133,Stockton,CA Sampled 3118199 <br /> 9912 Business park Drive, Ste 100 Project Number 7G600-019-04 Received 3/18/99 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 4/1199 <br /> Volatile Oxygenate Compounds by EPA Method 8260A <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> PL-10-2.5' ied) 5903255-05 &.111 <br /> Ethanol 9030387 3129/99 3/30/99 3000 ND mg/kg D <br /> Surrogate 12-DCA-d4 600-140 100 % D <br /> P1,-11}.5' 5903255-06 SJW <br /> Tert-butyl alcohol 9030387 3/29/99 3/30199 10 0 ND mg/kg <br /> Methyl tert-butyl ether 0 100 ND " <br /> Di-isopropyl ether 0 100 ND " <br /> Ethyl tert-butyl ether 0 100 ND <br /> Tert-amyl methyl ether 0 100 ND " <br /> Ethanol 150 ND " <br /> Surrogate 1 2-DCA-d4 600-140 93 6 % <br /> PL-12=3' 5903255-07 SAW <br /> rt-butyl alcohol 9030387 3129199 3/29/99 10 0 ND mg/kg <br /> hyl tert-butyl ether ;i 0 100 ND i <br /> ,-isopropyl ether 0 100 ND <br /> Ethyl tert-butyl ether 0 100 ND " <br /> Tert-amyl methyl ether 0 100 ND " <br /> Ethanol 150 ND " <br /> Surrogate 12-DCA-d4 600-140 956 YO <br /> PLL—' S903255-08 5�w <br /> Tert-butyl alcohol 9030387 3/29/99 3/29199 100 ND mg/kg <br /> Methyl tert-butyl ether 0 100 ND " <br /> Di-isopropyl ether 0 100 ND " <br /> Ethyl tert-butyl ether 0 100 ND " <br /> Tert-amyl methyl ether 0 100 ND " <br /> Ethanol 150 ND " <br /> Surrogate l 2-DCA-d4 600-140 948 YG <br /> U-14-3' S903255-09 51W <br /> Tert-butyl alcohol 9030387 3/29/99 3/29/99 100 ND mg/kg <br /> Methyl tert-butyl ether 0 100 ND " <br /> Di-isopropyl ether 0 100 ND " <br /> Ethyl tert-butyl ether 0 100 ND " <br /> Tert-amyl methyl ether 0 too ND <br /> Ethanol 150 ND <br /> Surrogate 1 2-DCA-d4 600-140 940 % <br /> ola Analytical- Sacramento *Refer to end of report for text of notes and def nrtions <br /> C&"PrA --k <br /> andra R anson,Client erv,ces Re resen�,ve Page 6 of l I <br /> p g <br />