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�1 Sequoia <br />Analytical <br />819 Stnker Avenue Suite 8 <br />Sacramento CA 95834 <br />(916) 921 9600 <br />FAX (916) 921 -0100 <br />www sequoiafabs com <br />0 <br />SECOR International - Rancho Cordova Project Chevron 9-5775 Sampled 6/14100 to 6116/00 <br />3017 Kilgore Road, Suite 100 Project Number 077 41991 043 Received 6/19100 <br />Rancho Cordova, CA 95670 Pr41ect Manager David Evans Reported 6123, 27100 <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 />Analyzed Level Result Result Units Recov limits % Limit % Notes* <br />Blank(continued) 0060257-BLK1 <br />Surrogate a a,a-Trifluorotoluene —_6/27/00 0200 0 238 mg/kg 600-14 119 <br />LCS <br />0060257 -BSI <br />S006257-41 <br />Benzene <br />6/27/00 <br />0200 <br />ND <br />0 188 mglkg <br />700-130 <br />940 <br />Toluene <br />25 6 <br />0200 <br />0200 <br />0 228 <br />700-130 <br />114 <br />Ethylbenzene <br />250 <br />0200 <br />Ethylbenzene <br />0 239 <br />700-130 <br />119 <br />Xylenes (total) <br />920 <br />0 600 <br />103 <br />0 672 <br />700-130 <br />112 <br />Methyl tert-butyl ether <br />600-140 <br />0200 <br />250 <br />0 168 <br />700-130 <br />840 <br />Surrogate a a a-Triuorotoluene <br />0 140 <br />0200 <br />700 <br />0 238 <br />600-140 <br />119 <br />Matrix Spike <br />0060257-MS1 <br />0 221 <br />500625741 <br />110 <br />Benzene <br />6127100 <br />0200 <br />ND <br />0 154 mg/kg <br />60 0-140 <br />77 0 <br />Toluene <br />0200 <br />ND <br />0 192 <br />600-140 <br />960 <br />Ethylbenzene <br />0200 <br />ND <br />0204 <br />600-140 <br />102 <br />Xylenes (total) <br />0 600 <br />ND <br />0 575 <br />600-140 <br />95 8 <br />Methyl tert-butyl ether <br />0200 <br />ND <br />0 131 <br />600-140 <br />655 <br />Surrogate a a,a-Trifluorotoluene <br />0200 <br />0 224 <br />600-140 <br />112 <br />Matrix Spike Dup <br />0060257-MSD1 <br />S006257-41 <br />Benzene <br />6/27100 0200 <br />ND <br />0 158 mg/kg <br />600-140 <br />790 <br />250 <br />25 6 <br />Toluene <br />0200 <br />ND <br />0 187 <br />600-140 <br />935 <br />250 <br />264 <br />Ethylbenzene <br />0200 <br />ND <br />0 184 <br />600-140 <br />920 <br />250 <br />103 <br />Xylenes (total) <br />tp0 600 <br />ND <br />0 533 <br />600-140 <br />888 <br />250 <br />758 <br />tcrt-butyl ether <br />0 200 <br />ND <br />0 140 <br />600-140 <br />700 <br />250 <br />664 <br />_Methyl <br />Surrogate a,a,a-Trifluorotoluene <br />6200 <br />0 221 <br />600-140 <br />110 <br />Sequoia Analytical - Sacramento <br />*Refer to end of report for text of notes and <br />Page 7 of 8 <br />p <br />