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1551 industrial Road <br /> Sequoia San Carlos, CA 94070-4111 <br /> (650) 232-9600 <br /> 6D <br /> Analytical FAX (650) 232-9612 <br /> Blaine Tech Services Project Chevron(3) Sampled 11/17/99 <br /> 1680 Rogers Avenue Project Number Chevron 9-6I71/991117-R2 Received 11/18/99 <br /> San Jose,CA 95112 Project Manager Scott Boor Reported 12/7/99 <br /> Total Purgeuble Hydrocarbons-(C6-C12),BTEX and MTBE by DHS LUFTIQuahty Control <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 /> Matrix Spike(continued) 9120001-MSI L911191-06 <br /> Xylenes(total) 12/1/99 300 ND 283 ug/l 600-140 943 <br /> Surrogate a,a,a-Triuorotoluene It100 102 700-130 102 <br /> Matrix Spike Dup 9120001-MSD1 L911191-06 <br /> Benzene 12/1/99 100 ND 9 96 ugll 600-140 99.6 250 621 <br /> Toluene It100 ND 9 74 " 600-140 97 4 250 7 12 <br /> Ethylbenzene 100 ND 103 600-140 103 250 924 <br /> Xylenes(total) 300 ND 308 600-140 103 250 882 <br /> Surrogate a,a a-Trifluorotoluene 100 986 700-130 98 6 <br /> I <br /> Batch 9120002 Date Prepared 12/1/99 Extraction Method EPA 5030B IP/T] <br /> Blank 9120002-BLKI <br /> Purgeable Hydrocarbons as Gasoline 12/1/99 ND ug/l 500 <br /> zene 11 ND 0 500 <br /> ne ND 0 500 <br /> ,'benzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl text-butyl ether ND 5 00 <br /> Surrogate a,a,a-Triuorotoluene 100 997 700-130 99 7 <br /> LCS 9120002-1351 <br /> Benzene 12/1/99 100 8 96 ug/l 700-130 896 <br /> Toluene 100 892 700-130 89 2 <br /> Ethylbenzene 100 912 700-130 912 <br /> Xylenes(total) 300 275 700-130 91 7 <br /> Surrogate a,a a-Trifluorotoluene 100 8 71 700-130 871 <br /> LCS 9120002-BS2 <br /> Purgeable Hydrocarbons as Gasoline 1211199 250 245 119/1 700-130 98 0 <br /> Surrogate a,a a-Triuorotoluene 100 722 700-130 722 <br /> Matrix Spike 9120002-MSI L911230-15 <br /> Benzene 12/2/99 100 ND 898 ug/l 600-140 898 <br /> Toluene 100 ND 894 600-140 894 <br /> Ethylbenzene 100 ND 9 15 600-140 91.5 <br /> Xylenes(total) 300 ND 274 600-140 91.3 <br /> Surrogate a a,a-Trifluorotoluene 106 8 63 700-130 863 <br /> Matrix Spike Dun 9120002-MSD1 L911230-15 <br /> Benzene 12/2/99 100 ND 9 75 ug/l 600-140 975 250 8,22 <br /> Toluene 100 ND 9 71 600-140 971 25 0 826 <br /> oia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 8 of 12 <br />