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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 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)9z l 0100 <br /> Vao Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 <br /> 1551 Industrial Road (707)792 1865 FAX(707) 792 0342 <br /> San Carlos CA 94070 4 E 1 t (650}232 9600 FAX((550) 232 9612 <br /> I* <br /> Emcon-Pinnacle Project Arco 2168,Stockton,CA <br /> 3939 Cambridge Road, Ste 202 Project Number 21775-234 004 Sampled 2/17/99 to 2/[8/99 <br /> Cameron Park,CA 95682 <br /> Project Manager Dave Foley Received 2/18/99Reported 3/4/99 <br /> Volatile Oxygenate Compounds by EPA Method 8260A <br /> Sequoia Analytical -Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits <br /> Y Limit Result Units Notes* <br /> MW-5�]_ lrntrnrrorll <br /> SQQ2274-f15 Water <br /> Surrogate 1 1-DCA-d4 <br /> 600-140 <br /> 856 <br /> MW-6 <br /> tylalcohol S202274-06TertLa' t <br /> 9020259 2/23/99 2/23/99 200 ND Ug/1 <br /> Methyl tert-butyl ether „ <br /> Di-isopropyl ether 200 ND " <br /> Ethyl tert-butyl ether2 00 882 <br /> „ <br /> Tert-amyl methyl ether 200 ND " <br /> 200 ND " <br /> Surrogate 12-DCA-d4 <br /> 600-140 872 <br /> WY-7(47') <br />[e ;s.Q02274-t)7 Water <br /> [ert-butyl ether rt-butyl alcohol 9020259 2/23/99 2/23/99 200 ND ug/l <br /> ;i <br /> Propyl ether 200 ND <br /> Ahyl tert-butyl ether 200 ND " <br /> ert-amyl methyl ether „ 200 ND <br /> 200 ND <br /> arrogate 12-DCA-d4 60 0-140 <br /> 95 6 % <br />) Analytical-Sacramento <br /> *Refer ro eracl of)epa a for rcpt of motes and defiruteoas <br /> laid W Bobe1,Client Services Representative <br /> Page 5 of 10 <br />