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t• <br /> a <br /> 819 Striker Avenue Sulte <br /> Sequoia Saaam(916)9 195834 <br /> i! l FAX(916)921-0100 <br /> Analytical www sequoialabs com <br /> O—Ur <br /> Gettler-Ryan-Dublin Project Tosco 6981, Stockton CA Sampled 8/31/00 <br /> 6747 Sierra Court, Ste 1 Project Number N/A Received 8131100 <br /> Dublin,CA 94568 Project Manager S Polston Reported 9/12100 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE in Air by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov Limas IN, Limit % Notes* <br /> Batch 0080366 Date Prepared 8131100 Extraction Method EPA 5030E P/T <br /> Blank 0080366-BLKI <br /> Purgeable Hydrocarbons 8/31100 ND mg/m'Air 100 <br /> Benzene " ND 00500 <br /> Toluene ND 00500 <br /> Ethylbenzene ND 00500 <br /> Xylenes(total) ND 00500 <br /> Methyl tert-butyl ether ND 0 500 <br /> Surrogate a aa-Trifluorotoluene 200 198 600-140 990 <br /> LCS 0080366-BSI <br /> Benzene 8/31/00 200 195 mg/ml Air 700-130 975 <br /> Toluene 200 191 700-130 95 5 <br /> y[benzene 200 185 700-130 925 <br /> eves(total) 600 507 700-130 84 5 <br /> ethyl tent-butyl ether 200 228 700-130 114 <br /> Surrogate a a a-Trifluorotoluene 200 209 600-140 104 <br /> L_CS Dup 0080366-BSD/ <br /> Benzene 8/31/00 200 191 mg/ml Air 70 0-130 955 25 0 207 <br /> Toluene 200 189 700-130 945 250 105 <br /> Ethylbenzene 200 181 700-130 905 250 2 19 <br /> Xylenes(total) 600 496 700-130 827 25 0 2 1[5 <br /> Methyl tert-butyl ether 200 237 700-130 118 25 0 3 45 <br /> Surrogate a aa-Triuorotolu me 200 206 600-140 103 <br /> 0 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> I <br /> I <br /> I <br /> Page 4 of 6 <br />