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Sequoia <br />/ <br />hesapeake Drive <br />. Wiget lane <br />Redwood City. 4 <br />Walnut Creek, CAA 945 <br />00 (650) 364-96 <br />(925) 988-9600 <br />FAX (650) 3649233 <br />FAX (925) 988-9673 <br />Project Number: <br />819 Stoker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />Analytical <br />1455 McDowell Blvd. North, Ste. D <br />Petaluma. CA 94954 <br />(707) 792-1865 <br />FAX (707) 792-0342 <br />�F <br />1551 Industrial Road <br />San Carlos. CA 94070-4 1 1 1 <br />(650) 232-9600 <br />FAX (650) 232-9612 <br />;ambria Environmental <br />Project. <br />EQUILON, 1313 E. Charter Way, Stockton, CA Sampled: <br />4/29/99 <br />70 Perkins Street <br />Project Number: <br />N/A Received: <br />4/29/99 <br />lonoma, 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 />Analvte Number Preoared Analvzed Limits Limit Result Units Notes• <br />0&13DopffM. T.P <br />Surrogate. I <br />11 11 60.0-140 102 % <br />T$_17=14' S904402-06 <br />5904402-09 <br />EOji <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 " " " 60.0-140 98.8 % <br />DS=L-i S904402-07 <br />5904402-09 <br />sail <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-DC444 " " " 60.0-140 101 °r) <br />DS -2.4.5' S904402-08 <br />5904402-09 <br />sail <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 " " " 60.0-140 98.0 % <br />DS - 3-4.5' <br />5904402-09 <br />sail <br />Tert-butyl alcohol <br />9050049 5/4/99 5/6/99 <br />10.0 <br />ND <br />mg/kg <br />Methyl tert-butyl ether <br />0.100 <br />ND <br />" <br />Di -isopropyl ether <br />0.100 <br />ND <br />" <br />Ethyl cert -butyl ether <br />0.100 <br />ND <br />" <br />Tert-amyl methyl ether <br />0.100 <br />ND <br />" <br />Surrogate: 1,2 -DCA -d4 <br />60.0-140 <br />99.2 <br />% <br />DS4-4' <br />S904402-10 <br />Sail <br />Tert-butyl alcohol <br />9050049 5/4/99 5/6/99 <br />10.0 <br />ND <br />mg/kg <br />Sequoia Analytical - Sacramento <br />'Refer to end of report for test of notes and definitions. <br />-A <br />\ <br />1 <br />andra R. Hanson, Client Services Representative <br />Page 8 of 15 <br />rII <br />