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Sequoia 680 Chesapeake Drive Redwood Gty 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 /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707) 792-0342 <br /> Cambria Environmental Project EQUILON,420 Kettlemen LN Lodi, CA Sampled 1/22199 <br /> 270 Perkins Street Project Number N/A Received 1/22/99 <br /> Sonoma, CA 95476 Project Manager Aubrey Cool Re orted 1/26,27,28/99 <br /> MTBE by DHS-L.UETIQuality 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 /> Batch, 9010294 Date Prepared. 1122/99 l".XaraSSI9n Method. EPA 5030E(NeOH) <br /> Blank 9010294-BLK1 <br /> Methyl tert-buty€ether 1/22/99 ND mg/kg 00500 <br /> Surrogate a,a a-7rifluorotoluene 0200 0199 600-140 995 <br /> LU 9010294-BSI <br /> Methyl tert-butyl ether 1/22/99 0200 0 195 mg/kg 700-130 975 <br /> Surrogate a,a a-Trifluorotoluene " 0200 0201 600-140 101 <br /> Matrix Spike 9010294-MSI 5901263-04 <br /> Methyl tert-butyl ether 1122199 0200 0 111 0 223 mgrkg 600-140 560 8 <br /> Surrogate a,a a-Trifluorotoluene " 0200 0196 600-140 980 <br /> 9010294-MSD/ 5901263-04 <br /> I*- 'Iate <br /> tert-butyl ether 1/22/99 0200 0 111 0 230 mg/kg 600-140 595 250 606 _ 8 <br /> aaa-Tr�uorotoluene 0200 0195 600-140 975 <br /> latch- 9010295 Date,Prepared 1122199 Extraction Method EPA 5030B(MeOHI <br /> Blank 9010295-BLK1 <br /> Methyl tert-butyl ether 1122/99 ND mg/kg 00500 <br /> Surrogate a a a-Trrfluorotoluene 0200 0 19.3 600-140 965 <br /> LCs 9010295-BSI <br /> Methyl tert-butyl ether 1/22/99 0200 0 182 mg/kg 700-130 91 0 <br /> Surrogate a a a-Trifluorotoluene 110200 0 196 600-140 980 <br /> Matrix Spike 9010295-MSI 5901263-20 <br /> Methyl tert-bury€ether 1122199 0200 00508 0202 mg/kg 600-140 756 <br /> Surrogate a a a-Trtfluorotoluene 1, 0200 0 192 600-140 960 <br /> 9010295-MSD1 S901263-20 <br /> Methyl tert-butyl ether 1/22199 0200 00508 0202 mg+kg 600-140 756 250 0 <br /> Surrogate a a a-Trrfluorotcluene 110200 0189 " 600-140 94.5 <br /> Batch. 9010296 Date Prepared. 1125/99 Extraction Method. EPA,,U30B-(MeOHU <br /> Blank 9010296-BLKI <br /> Methyl tert-butvl ether 1/25/99 ND mg/kg 00500 <br /> Surrogate a a a-Trifluorotoluene 110200 0 182 600-140 91 0 <br /> LLS 9010296-BSI <br /> l tert-bury€ether 1/25/99 0200 0 212 mg/kg 700-130 106 <br /> 5 ate a a a-Trifluorotoluene 0200 0185 600-140 925 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Sandra R Hanson, Client Services Representative Page 22 of 27 <br />