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Sequoia 819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> (916) 921-9600 <br /> Analytical <br /> FAX(916)921-0100 <br /> IT Corporation-Sacramento Project NIA Sampled 1131100 <br /> 1433 N Market Blvd, Ste 1 Project Number 880-039 ]A Received 1/31/00 <br /> Sacramento CA 95834 Project Manager Chet Zaveri Reported 211, 14/00 <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 /> LA,alvte Analvzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0020009 Date Prepared 1/31100 Extraction Method EPA 5030B(PIT) ' <br /> Blank 0020009-B LK 1 <br /> Purgeable Hydrocarbons 1/31/00 ND mg/ml 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 a a-Trifluorotoluene� 200 186 600-140 93 0 <br /> LCS 0020009-BSI <br /> Benzene 1/31/00 200 181 mg/ml Air 700-130 905 <br /> Toluene 200 1 81 700-130 905 <br /> Ethylbenzene 200 1 77 700-130 88 5 <br /> Xylenes(total) 600 5 55 700-130 925 <br /> Methyl tert_butyl ether 200 _ 1 80_" 700-130 900 <br /> Surrogate a a a-Trtfluorotoluene 2 00 186 600-140 930 <br /> LCS Dun 0020009-BSD1 <br /> Benzene 1/31/00 200 182 mg/ml Air 700-130 91 0 250 0 551 <br /> Toluene 200 1 82 11700-130 910 250 0 551 <br /> Ethylbenzene 200 1 79 700-130 895 250 1 12 <br /> Xylenes(total) 600 559 700-130 93 2 250 0 754 ' <br /> Methyl tert-butyl ether _ " 200 Y 1 88 _ _ _ 700-130 940 250 4 35 <br /> Surrogate a a a-Trifluorotoluene 200 187 600-140 935 <br /> Batch 0020062 Date Prepared 21_1100 Extraction Method _EPA 5030B(M) ' <br /> Blank 0020062-BLK 1 <br /> Purgeable Hydrocarbons 2/1/00 NTD mg/ml Air 10/�0 <br /> 1Jel]LGne " 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,a,a-Trtfluorotoluene 200 185 600-140 925 <br /> LCS 0020062-BSI <br /> Benzene 2/1/00 200 1 92 mg/ml Air 700-130 960 <br /> Toluene 200 2 01 700-130 too <br /> Ethylbenzene 200 203 700-130 101 <br /> Xylenes(total) 600 634 700-130 106 <br /> Methvl tert-butvl ether 200 204 700-130 102 <br /> Sequoia Analytical- Sacramento *Refer to end of report for text of notes and definitions <br /> Page 7 of 1 I ' <br />