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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-96M FAX(650)364-9233 <br /> 404 N Wlget lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> .1 !Z� 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> q1W Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> 0 <br /> Blaine Tech Services Project Chevron(3) Sampled 3/5/99 <br /> 1680 Rogers Avenue Project Number Chevron 9-3232,990305-J1 Received 3/8/99 <br /> San Jose,CA 95112 Project Manager Christine Lillie Reported 3/26/99 <br /> Total Purgeable Hydrocarbons(C�C12),BTEX and MTBE by DHS LVMQuality Confroim -- <br /> _Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9030039 Date Prepared 3/10/99 Extraction Method EPA 5030E [PIT] <br /> Blank 9030039-BLKI <br /> Purgeable Hydrocarbons as Gasoline 3110/99 ND ug/l 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 500 <br /> Surrogate a,a a-Tnfluorotoluene 100 112 700-130 112 <br /> LCS 9030039-BSI <br /> Benzene 3110/99 100 100 ug/1 700-130 100 <br /> Toluene 11 100 9 73 700-130 973 <br /> Ethylbenzene too 9 83 700-130 98 3 <br /> j Xylenes(total) 300 294 700-130 98 0 <br /> Wg—.le a s a-Tnfluorotoluene 100 114 700-130 114 <br /> I <br /> I <br /> Matrix Spike 9030039-MSI L903020-09 <br /> Benzene 3/10/99 too ND 991 ug/l 600-140 991 <br /> Toluene 100 ND 975 600-140 975 <br /> Ethylbenzene 100 ND too 600-140 100 <br /> Xylenes(total) 300 ND 294 600-140 98 0 <br /> Surrogate a s a-Tnfluorotoluene 100 999 700-130 999 <br /> Matrix Spike Dup 9030039-MSD1 L903020-09 <br /> Benzene 3/10/99 100 ND 103 ug/l 600-140 103 25 0 386 <br /> Toluene 100 ND 996 600-140 996 25 0 213 <br /> Ethylbenzene " 100 ND 947 600-140 94 7 25 0 544 <br /> Xylenes(total) 300 ND 302 600-140 101 25 0 3 02 <br /> Surrogate a a a-Trifluorotoluene 100 101 700-130 101 <br /> Batch 9030043 Date Prepared 3111199 Extraction Method_ EPA 5030B IPM <br /> Blank 9030043-BLKI <br /> Purgeable Hydrocarbons as Gasoline 3/11/99 ND ug/l 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methvl tert-butyl ether ND 500 <br /> Surrogate a a a-Try7uorotoluene 100 111 700-130 122 <br /> oia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> I <br /> Page 6 of 10 <br />