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' <br />Se1 UOIa <br />580 Chesapeake Drive <br />��N. Wlget Lane <br />Walnut Creek. 598 <br />(925) 988-9600 <br />819 Striker Avenue, Suite 8 <br />819 <br />m <br />Sacraento. CA 95834 <br />(916) 921-9600 <br />Ma orial�dd.North.Ste.D <br />Tow <br />Analytical <br />1555 <br />Redwood City, C' 14063 <br />(650) 36496M <br />FAX (650) 3649233 <br />Walnut Creek. 598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />m <br />Sacraento. CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />Petaluma, CA 94954 <br />(707) 792-1865 <br />FAX (707) 792-0342 <br />San Carlos, CA 94070-4111 <br />(650) 232-9600 <br />FAX (650) 232-9612 <br />Cambria Environmental <br />Project: <br />EQUILON, 1313 E. Charter Way, Stockton, CA Sampled: <br />4/29/99 <br />270 Perkins Street <br />Project Number: <br />N/A Received: <br />4/29/99 <br />Sonoma, CA 95476 <br />Project Manager: <br />Aubrey Cool Reported: <br />5/4, 7/99 <br />Volatile Oxygenate Compounds by EPA Method 8260A <br />Sequoia Analytical - Sacramento <br />Batch Date Date Surrogate Reporting <br />Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br />DS4-4' (continued) 5904402-10 5411 <br />Methyl tert-butyl ether 9050049 5/4/99 5/6/99 0.100 ND mg/kg <br />Di -isopropyl ether 0.100 ND " <br />Ethyl tert-butyl etlier 0.100 ND " <br />Tert-amyl methyl ether 0.100 ND " <br />Surrogate: 1,2 -DCA -d4 11 11 1160.0-140 99.6 % <br />P-1-5' 5904402-11 <br />$oil <br />Tert-butyl alcohol 9050049 5/4/99 5/6/99 <br />10.0 <br />ND mg/kg <br />Methyl tert-butyl ether <br />0.100 <br />ND " <br />Di -isopropyl ether <br />0.100 <br />ND " <br />Ethyl tert-butyl ether <br />0.100 <br />ND ' <br />Tert-amyl methyl ether <br />0.100 <br />ND " <br />Surrogate: 1,2 -DCA -d4 " "1160.0-140 103 % <br />P-2-4.5' 5904402-12 <br />Ssil <br />Tert-butyl alcohol 9050049 5/4/99 5/6/99 <br />10.0 <br />ND mg/kg <br />Methyl tert-butyl ether <br />0.100 <br />ND <br />Di -isopropyl ether <br />0.100 <br />ND <br />Ethyl tert-butyl ether <br />0.100 <br />ND <br />Tert-amyl methyl ether <br />0.100 <br />ND <br />Surrogate: 1,2 -DCA -d4 "11" 60.0-140 103 % <br />P-3.3.5, 5904402-13 <br />S4i1 <br />Tert-butyl alcohol 9050049 5/4/99 5/6/99 <br />10.0 <br />ND mg/kg <br />Methyl tert-butyl ether <br />0.100 <br />ND <br />Di -isopropyl ether <br />0.100 <br />ND <br />Ethyl tert-butyl ether <br />0.100 <br />ND <br />Teri -amyl methyl ether <br />0.100 <br />ND " <br />Surrogate: 1,2 -DCA -d4 " " " 60.0-140 105 % <br />P4-5' S904402-14 <br />S-QU <br />Tert-butyl alcohol 9050049 5/4/99 5/6/99 <br />10.0 <br />ND mg/kg <br />Methyl tert-butyl ether <br />0.100 <br />ND <br />Di -isopropyl ether <br />0.100 <br />ND <br />Ethyl tert-butyl ether <br />0.100 <br />ND <br />Tert-amyl methyl ether <br />0.100 <br />ND <br />Sequoia <br />Analytical - Sacramento *Refer to end of report for text of notes and definitions. <br />Sandra R. Hanson, Client Services Representative Page 9 of 15 <br />