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1,I <br /> 819 Sinker Avenue Suite 8 <br /> y Sacramento CA 95834 <br /> Sequoia (916)921-9600 <br /> 1 FAX(916)92 l-O 100 <br /> Analytical www sequoialabs com <br /> i <br /> :SECOR International-Rancho Cordova Project Arco 4932,Stockton,CA Sampled 8/21/00 to 8122140 <br /> 3017 Kilgore Road, Suite 100 Project Number NIA Received 8/24/00 <br /> Rancho Cordova,CA 95670 Project Manager Rusty Benkosky Reported 9111/00 <br /> Total Purgeable Hydrocarbons(C6-C12), BTEX and MTBE 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 Limits % Limit % Nates* <br /> 'LCS(continued) 0090039-BS1 <br /> Methyl tert-butyl ether 9/5100 0200 0 185 mg/kg _ 700-130 92 5----- <br /> Surrogate <br /> _ __Surrogate a a a-Trefluorotoluene 0200 0 191 600-140 9-55 <br /> ,Matrix Spike 0090039-MSI S008348-18 <br /> Benzene 9/5100 0200 ND 0 160 mg/kg 600-140 800 <br /> Toluene " 0200 ND 0 155 600-140 775 <br /> tEthylbenzene „ 0200 ND 0 169 600-140 845 <br /> ylenes(total) 0 600 ND 0 473 11600-140 78 8 <br /> Methyl tert-butyl ether 0200 ND 0 156 600-140 78 0 __ <br /> Surrogate a a a Trefluorotoluene 0200 0204 600-140 102 <br /> Matrix Spike Dup 0090039-MSD1 5008348-18 <br /> 1Petne 915100 0200 ND 0 163 mg/kg 600-140 815 250 186 <br /> lC 1. 0200 ND 0 178 600-140 890 250 138 <br /> enzene 0200 ND 0 171 600-140 855 250 118 <br /> Xylenes(total) 0 600 ND 0 476 600-140 793 250 0 633 <br /> 'Methyl tert-butyl ether 0200 ND 0 139 600-140 695 25 0 115 <br /> Surrogate a a a-Trifluorotoluene 0200 0207 600-140 103 <br /> 1' <br /> 1 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> 1 Page 17 of 20 <br />