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A II II <br /> (tN Sequoia 885 Jarvis Drive <br /> Morgan Hill CA 95037 <br /> Analytical <br /> N-0 (408) 776-9640 <br /> FAX (408) 782-6308 <br /> ATC Associates lnc -Modesto Protect Stockton Fire Station#2 Sampled 12/14/99 <br /> 1 1 l7 Lone Palm Avenue Project Number 45462574 0001 Received 12/17/99 <br /> Modesto CA 95351-1502 Project Manager Jeanne Homsev Reported 1/14/00 <br /> Total Purgeable Hydrocarbons(C6-C12), BTEX and MTBE by DHS LUFT1Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Blank(continued/ 9120818-BLKI <br /> Benzene 12/28/99 ND ug/l 0 500 <br /> Toluene <br /> Ethylbenzene ND 0 500 <br /> ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> ivfcthvl tert-butvl ether ND ? 50 <br /> Surrogate a a a-Trtfluorotoluene --- 10 0 — - --- 10 7 ----�---70 0_130 107 <br /> LCS 9120818-BSI <br /> Benzene 12/28/99 100 849 ug/l 700-130 849 <br /> Toluene too 850 700-130 850 <br /> Ethvlbenzene 100 840 700-130 84 0 <br /> Xylenes(total) 300 264 700-130 88 0 <br /> 00t1'rix <br /> ogate a a a-Trifluorotoluene 100 108 700-130 108 <br /> Spike 9120818-MSI M912730-06 <br /> Benzene 12/28/99 100 ND 8 55 ug/l 600-140 855 <br /> Toluene 100 ND 8 50 600-140 85 0 <br /> Ethylbenzene too ND 824 600-140 824 <br /> Xylenes(total) _ 300 ND 265600-140 _ 883 <br /> Surrogate a a a-Trifluorotoluene 11100 105 700-130 10.5 <br /> _Matrix Spike Dun 9120818-V1SD1 V1912730-06 <br /> Benzene 12/28/99 too ND 807 ug/1 600-140 807 25 0 5 78 <br /> Toluene too ND 807 600-140 80 7 25 0 5 19 <br /> Ethylbenzene 100 ND 7 93 600-140 793 25 0 3 83 <br /> Xylenes(total) 300 ND 24 8 60 0-140 82 7 25 0 6 55 <br /> Surrogate a a a-Trrfluorotoluene 100 106 <br /> 700-130 106 <br /> Sequoia Analytical- Morgan Hill *Refer to end of report for text of notes and definitions <br /> Page 7 of 9 <br />