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I t Sequoia <br />Analytical <br />SECOR International - Rancho Cordova <br />3017 Kilgore Road, Suite 100 <br />Rancho Cordova, CA 95670 <br />Project Chevron 9-5775, Lodi, CA <br />Project Number 077 41991 043 <br />'roiect Manager David Evans <br />819 Sinker Avenue Suite 8 <br />Sacramento CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www sequotalabs com <br />Sampled 717100 <br />Received 7110100 <br />Reported 7112100 <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 RI'D <br />Vrialyte Analyzed Level Result Result Units Recov Limits % Limit % Notes <br />Batch 0070098 <br />Blank <br />Purgeable Hydrocarbons <br />Benzene <br />Toluene <br />Ethylbenzene <br />Xylenes (total) <br />Methyl tert-butyl ether <br />Surrogate a a a-Trifluorotoluene <br />LCS <br />Benzene <br />Toluene <br />Ethylbenzene <br />Ou"on,s (total) <br />hyl tent -butyl ether <br />ogate a a a-Trifluorotoluene <br />Date Prepared 7/11100 Extraction Method EPA 5030B McOH <br />0070098-BLK1 <br />7111100 ND mg/kg 100 <br />ND 000500 <br />ND 000500 <br />ND 000500 <br />ND 000500 <br />ND 00500 <br />0200 0 183 600-140 915 <br />0070098-BS1 <br />0070098-MS1 <br />S007070-24 <br />7111100 0200 <br />0 174 mg/kg <br />700-130 <br />870 <br />" 0200 <br />0 193 <br />700-130 <br />965 <br />" 0200 <br />0 192 <br />70 0430 <br />960 <br />" 0 600 <br />0 533 <br />700-130 <br />898 <br />" 0200 <br />0 158 <br />70 0430 <br />790 <br />ff 0200 <br />0 191 " 6U U -14U y> > <br />Matrix Spike <br />0070098-MS1 <br />S007070-24 <br />Benzene <br />7111100 <br />0200 <br />ND <br />0 177 mg/kg <br />600-140 <br />885 <br />Toluene <br />0200 <br />ND <br />0202 <br />600-140 <br />101 <br />Ethylbenzene <br />0200 <br />ND <br />0202 <br />600-140 <br />101 <br />Xylenes (total) <br />0 600 <br />ND <br />0 571 <br />600-140 <br />952 <br />Methyl tert-butyl ether <br />0200 <br />ND <br />0 160 <br />600-140 <br />800 <br />Surrogate a,a a-Trifluorotoluene <br />0200 <br />0172 <br />600-140 <br />860 <br />Matrix Spike Dup <br />0070098-MSD1 <br />S007070-24 <br />Benzene <br />7111/00 <br />0200 <br />ND <br />0 180 mg/kg <br />600-140 <br />900 <br />25 0 <br />168 <br />Toluene <br />0200 <br />ND <br />0 189 " <br />600-140 <br />945 <br />25 0 <br />665 <br />Ethylbenzene <br />0200 <br />ND <br />0208 <br />600-140 <br />104 <br />250 <br />293 <br />Xylenes (total) <br />0 600 <br />ND <br />0 583 <br />600-140 <br />972 <br />250 <br />208 <br />Methyl tert-butyl ether <br />0200 <br />ND <br />0 164 <br />600-140 <br />820 <br />250 <br />_2 47 <br />Surrogate aa a-Trifluorotoluene <br />0200 <br />0 178 <br />600-140 <br />890 <br />Analytical - Sacramento <br />*Refer to end ofrepori for test of notes and definitions <br />Page 4 of 5 <br />