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' 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N WISet Lane walnut Creek CA 94598 (925)988-%oo FAX(925)988-9673 <br /> � Analytical <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)92]-0500 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> • <br /> Cambria Environmental Project EQUILON,420 Kettlemen LN Lodi,CA Sampled 1/22/99 <br /> 270 Perkins Street Project Dumber N/A Received 1/22/99 <br /> Sonoma, CA 95476 Project Manager Aubrey Cool Reported 1/26,27,28/99 <br /> Volatile Organic Compounds by-EPA Method 8260A/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> MatAB ke DU(continued) 9010282-MSD1 S901Z63-14 <br /> Surrogate 12-DCA-d4 1126199 150 234 mglkg 600-140 93 6 <br /> Batch. 9014284 late Prepared, 127/99 EXtraction Method, EEA 5030B [Me0JU <br /> Blank 9010284-BLKI <br /> Tert-butyl alcohol 1127199 ND mg/kg 10 0 <br /> Methyl tert-butyl ether ND 0 100 <br /> Di-isopropyi ether ND 0 100 <br /> Ethyl tert-butyl ether ND 0 100 <br /> Tert-amyl methyl ether ND 0 100 <br /> Surrogate 12-DCA-d4 250 2 53 600-140 101 <br /> 9010284-BSI <br /> l tert-butyl ether 1127199 250 2 68 mg/kg 70 0-130 107 <br /> SIKgate 1,2-DCA-d4 11250 2 60 600-140 104 <br /> Matrix Spike 9010284=m1 5901145-14 <br /> Methyl tert-butyl ether 1/27/99 250 ND 247 mg/kg 600-140 988 <br /> Surrogate 11-DCA-d4 11150 239 600-140 95 6 <br /> Matrix Spike Duo 9010284--M D1 S901145-14 <br /> Methyl tert-butyl ether 1/27/99 250 ND 2 81 m_u ka 60 0-140 112 25 0 123 <br /> Surrogate 12-DCA-d4 150 2 74 600-140 110 <br /> • <br /> Sequoia Analytical -Sacramento *Refer 10 end of report for text of notes and definitions <br /> la � . zz7L� <br /> Sandra R Hanson,Client Services Representative Page 26 of 27 <br /> M - - <br />