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819 Striker Avenue Suite 8 <br /> i Sacramento CA 95834 <br /> Sequoia (916)921-9600 <br /> a- -N <br /> FAX(916)921-0100 <br /> 4 ,,, Analytical www sequoialabs com <br /> ATC Associates Inc - Modesto Project SUSD Franklin HS Sampled 9/8/00 <br /> 1117 Lone Palm Ave, Ste B Project Number 54 17292 0001 Received 9111100 <br /> Modesto CA 95351 Project Manager Tom Lutterman Reported 9122/00 <br /> Total Purgeable Hydrocarbons (C6-C12)and BTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Llmlt Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0090178 Date Prepared 9118/00 Extraction Method EPA 5030B(MeOH) <br /> Blank 0090178-B LK I <br /> Purgeable Hydrocarbons 9118100 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 /> Surrogate a a a-Trifluorotoluene 100 799 600-140 799 <br /> LCS 0090178-BSI <br /> Benzene 9/18100 100 840 ug/1 700-130 840 <br /> Toluene 100 832 700-130 83 2 <br /> Ethylbenzene 100 860 700-130 860 <br /> Xylenes(total) 300 256 700-130 85 3 <br /> 49ogate a a a-Triuorotoluene 100 7 74 600-140 774 <br /> Matrix Spike 0090178-MS1 5009116-01 <br /> Benzene 9/18100 100 ND 877 ug/1 600-140 877 <br /> Toluene 100 ND 871 600-140 87 1 <br /> Ethylbenzene 100 ND 883 600-140 883 <br /> Xylenes(total) 300 ND 264 600-140 880 <br /> Surrogate a a a-Triuorotoluene 100 7 71 600-140 771 <br /> Matrix Spike Dap 0090178-MSD1 5009116-01 <br /> Benzene 9118/00 100 ND 896 ug/1 600-140 896 250 2 14 <br /> Toluene 100 ND 902 600-140 902 250 350 <br /> Ethylbenzene 100 ND 899 600-140 899 25 0 180 <br /> Xylenes(total) 300 ND 270 600-140 900 250 225 <br /> Surrogate a a a-Trifluorotoluene 100 734 600-140 734 <br /> 0 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 4 of 6 <br />