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819 Striker Avenue Suite 8 <br /> Sequoia SacramentoCA 95834 <br /> (9t916)9z1-96o0 <br /> 4 FAX(916)921-0100 <br /> 4D Analytical www sequoialabs corn <br /> CPO <br /> SECOR international-Rancho Cordova Project ARCO 2093,Tracy,CA Sampled 6129100 <br /> 3017 Kilgore Road,Suite 100 Project Number NIA Received 6129100 <br /> Rancho Cordova,CA 95670 Project Mana er Rusty Benkosky Reported 7128,817100 <br /> Total Purgeable Hydrocarbons(C6-C12), BTEX and MTBE in Air(ppmv)by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> LaIre Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0070109 Date Prepared 6130100 Extraction Method EPA 5030B PIT <br /> Blank 0070109-BLK1 <br /> Purgeable Hydrocarbons 6130100 ND ppmv 2 80 <br /> Benzene ND 00160 <br /> Toluene ND 00130 <br /> Ethyibenzene ND 00120 <br /> Xylenes(total) ND 00120 <br /> Methyl tent-butyl ether " ND 0 140 <br /> Surrogate a,a a-Trifluorotoluene 000200 000197 60 0-140 985 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> pgge 6 of 8 <br />