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R ' <br /> Chew <br /> pea <br /> 1 City,CA {650}364-9600 <br /> FAX(650)364-9233 <br /> ® S e�uOla 404 N. keret Lane Laneve Redwood CiWalnut Creek:CA 94598 (925)988-9600 FAX(9251 988-9673 <br /> 819 Striker Avenue;Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(9 W)921-0100 <br /> 1455 McDowell Blvd. North,Ste..D Petaluma,CA 94954 (707)792-1865 FAX(707}792-0342 <br /> Analytic <br /> 15 5 1 Industrial Road San Carios,CA 94070-41 1 1 (650)232-9600 FAX{650}232-9G 12 <br /> .s . <br /> Pinnacle-C.P. Project: ARCO,5469,-Stockton CA Sampled: 211 1199 <br /> 3939 Cambridge Road, Ste. 220 Project Number: N/A Received: 2112199 <br /> Cameron Park,CA 95682 Project Manager: Mark Capps Reported: 3/1199 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical -Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits' Limit Result Units <br /> �.Notes:* <br /> EL 10(4,Y) 5.92174-10.. SAW. <br /> Tert-butyl alcohol 9020206 2/17/99 .2/17/99 i00 44.0, mg/kg <br /> Methyl tert-butyl ether 0.100 5.16,• " <br /> Di-isopropyl ether 0.100 ND " <br /> Ethyl tent-butyl ether 4: 0.100 ND " <br /> Teri-amyl methyl ether 0.100 ND " <br /> Surrogate: 1,1-DCA-d4 60.0-140 ND <br /> 5902174-1 i4i1 <br /> Tert-butyl alcohol 9020206 2/17/99 2/17/99 10.0 ND mg/kg <br /> Methyl tert-butyl ether 0..100 0.482 " <br /> :Di-isopropyl ether 0.I00 ND <br /> 'Ethyl tert-butyl ether 0.100 ND <br /> Tert-amyl methyl ether 0.100 ND " <br /> iSurrogate: 1,2-DCA-d4 " 60.0140 101 <br /> 5902174-12 <br /> SW <br /> Vert-butyl alcohol 9020206 2/17/99 2/17/99 E0.0 ND mg/kg " <br /> .Methyl tert-butyl ether 0.1 .0 ND " <br /> Di-isopropyl ether 0.100 ND <br /> Ethyl tert-butyl ether 0.100 NQ " <br /> Tert-amyl methyl ether 0.100 ND " <br />` Surrogate: 1,2-DCA-d4 <br /> 60.0-140 102 <br /> 1 <br /> 551174-13° SAW " <br /> Tert-butyl alcohol 9020206 2/17/99 2117/99 10.0 ND mg/kg <br /> Methyl tett-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 /> Surrogate: 1,2-DCA44 " 60.0'140 103 <br /> 5902174=L4 .. <br />:Tert-butyl alcohol 9020206 2/17/99 2/17/99 < - 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 /> i <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> a <br /> Ronald W. Bobel,Client Services Representative q. Page e 9 of 15 <br /> t j <br /> i <br />