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Sequoia 885 Jarvis 5037 <br /> Morgan 1-t41 CA 95037 <br /> 4 (408) 776-}600 <br /> (D Analytical FAX(408) 782-6308 <br /> Blame Tech Services(Shell) Project Equiva Sampled 8/5/99 <br /> 1680 Rogers Avenue Project Number 2494 Fremont St, Stockton Received 8/9/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 8/24/99 <br /> Total Purgeable Hydrocarbons(C&C12),BTEX and MTBE by DHS LUFT/Quality Control <br /> m _ - Sequoia Analytical-Morgan Hill <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> [:alyte Analyzed Level Result Result Units Recov Limits % Lima % Notes* <br /> Batch 9080624 Date Prepared 8118199 Extraction Method EPA 5030B[P/Tl <br /> Blank 9080624-BLK 1 <br /> Purgeable Hydrocarbons 8/18/99 ND ug/1 500 <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 250 <br /> Surrogate a a a-Trifluorotoluene 100 969 700-130 969 <br /> LC S 9080624-BSI <br /> Purgeable Hydrocarbons _8_/18199 250 _ W_ 205 ug/l_- _ 70 0-130 820---- _ <br /> Surrogate a a a-Trifluorotoluene 100 12 7 _ 700-130 127 <br /> Matrix Spike 9080624-MS] 9080493-07 <br /> Purgeable Hydrocarbons _ _ 8118/99 250 ND _ 262_ ug/l _ 600-140 105__- <br /> Surrogate a a,a-Tnfluorotoluene 100 12 6 700-130 126 <br /> Matrix Spike Dup 9080624-MSD1 9080493-07 <br /> Purgeable Hydrocarbons _ 8/18/99250 ND - 239_ ug/l _ 600-140__ _ 95 6 _ 250 _ 937— <br /> Surrogate a a a-Tnfluorotoluene 100 12.5 70 0-130 12-5 <br /> Batch 9080678 Date Prepared 8/19/99 Extraction Method EPA 5030B IP/fl <br /> Blank 9080678-BLK I <br /> Purgeable Hydrocarbons 8/19/99 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 ----—250 -- <br /> Surrogate a s a-Trtfluorotoluene 100 883 700-130 883 <br /> LCS 9080678-BS 1 <br /> Benzene 8/19/99 100 851 ug/l 700-130 85 1 <br /> Toluene 100 822 700-130 82 2 <br /> Ethylbenzene 100 867 700-130 867 <br /> Xylenes(total) 300 254 _- 700-130 847 -_ <br /> Surrogate a s a-Tnfluorotoluene 100 840 700-130 840 <br /> Matrix Spike 9080678-MSI 9080303-02 <br /> Benzene 8119/99 100 ND 838 ug/l 600-140 838 <br /> Toluene 100 ND 808 600-140 808 <br /> Sequoia Analytical-Morgan Hill *Refer to end of report for text of notes and definitio <br /> Page 3 of 5 <br />