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Sequoia 819 Sulker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> 4D <br /> (916)921-96M <br /> FAX(916)921-0 100 <br /> 00 Analytical www sequoialabs com <br /> SECOR International-Rancho Cordova Project ARCO 2093 T'rdcy CA Sampled 7/27100 <br /> 3017 Kilgore Road,Suite 100 Project Number NIA Received 7/28100 <br /> Rancho Cordova,CA 95670 Project Manager Rusty BLnkosky Reported 817100 <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 /> lAnal)lc Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0080020 Date Prepared 7/31100 Extraction Method EPA 5030B MM <br /> Blank 0080020-B LK 1 <br /> Purgeable Hydrocarbons 7/31/00 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-Triuorotoluene 200 2 08 600-140 104 <br /> LCS 0080020-BS1 <br /> Benzene 7/31/00 200 2 09 mg/m'Air 700-130 104 <br /> Toluene 200 221 700-130 111 <br /> E nzene 200 2 14 700-130 107 <br /> Xis(total) 600 603 700-130 101 <br /> Methyl tert-butyl ether 200 218 700-130 109 <br /> Surrogate a a a-Trifluorotoluene 200 2 16 600-140 108 <br /> LCS Dup 0080020-BSD1 <br /> Benzene 7131100 2 00 2 13 mg/ml Air 700-130 107 25 0 284 <br /> Toluene 2 00 225 700-130 113 25 0 1 79 <br /> Ethylbenzene 200 2 21 700-130 111 250 3 67 <br /> Xylenes(total) 600 626 700-130 104 25 0 293 <br /> Methyl tert-butyl ether 200 230 700-130 115 25 0 536 <br /> Surrogate a a a-Trifluorotoluene 200 2 18 600-140 109 <br /> 0 <br /> Sequoia Analytical-Sacramento "Refer to end of report far text of notes and definitions <br /> Page 5 of 8 <br /> r�t <br />