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Sequoia <br />Analytical <br />SECOR [nternational - Rancho Cordova <br />3017 Kilgore Road, Suite 100 <br />Rancho Cordova, CA 95670 <br />Analvte <br />Project Chevron 9-5775 <br />Project Number 077 41991 043 <br />�rniect Manaeer David Evans <br />819 Striker Avenue Suite 8 <br />Sacramento CA 95834 <br />(916) 921-9600 <br />FAX (916) 92 1 -0 100 <br />www sequoialabs com <br />Sampled 6/20/00 <br />Received 6/21/00 <br />Reported 6/23/00 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX by DHS LUFT/Quality Control <br />Sequoia Analytical - Sacramento <br />Batch 0060232 <br />Blank <br />Purgeable Hydrocarbons <br />Benzene <br />Toluene <br />Ethylbenzene <br />Xylenes (total) <br />Surrogate a a a -Tris luorotoluene <br />Date Spike Sample QC Reporting Limit Recov RPD RI'D <br />Analvzed Level Result Result Units Recov Limits % Limit % Notes* <br />Date Prepared 6/23/00 Extraction Method EPA 5030E (MeOH) <br />0060232-BLK1 <br />6/23/00 ND mg/kg 100 <br />ND " 000500 <br />ND 000500 <br />ND 000500 <br />ND 000500 <br />0 200 0205 600-140 102 <br />LCS <br />0060232 -BSI <br />Benzene <br />6/23/00 <br />0200 <br />0 176 <br />mg/kg <br />70 0-130 <br />88 0 <br />Toluene <br />0200 <br />0203 <br />700-130 <br />101 <br />Eth}]benzene <br />0200 <br />0203 <br />I' <br />700-130 <br />101 <br />Aftenes (total) <br />0 600 <br />0 568 <br />700-130 <br />947 <br />IqWrogate a a,a-Trifluorotoluene <br />0200 <br />0203 <br />600-140 <br />101 <br />Matrix SAike <br />0060232-MS1 <br />5006242-01 <br />Benzene <br />6/23/00 <br />0200 <br />ND <br />0 189 <br />mg/kg <br />600-140 <br />945 <br />Toluene <br />0200 <br />ND <br />0202 <br />600-140 <br />101 <br />Ethylbenzene <br />0200 <br />ND <br />0203 <br />600-140 <br />101 <br />Xylenes (total) <br />0 600 <br />ND <br />0 564 <br />600-140 <br />940 <br />T <br />Surrogate a,a a-Trzfluorotoluene <br />0200 <br />0204 <br />600-140 <br />101 <br />Matrix Spike Dup <br />0060232-MSD1 <br />5006242-01 <br />Benzene <br />6/23/00 <br />0200 <br />ND <br />0 189 <br />mg/kg <br />600-140 <br />945 <br />25 0 0 <br />Toluene <br />tp <br />0200 <br />ND <br />0204 <br />600-140 <br />102 <br />25 0 0 985 <br />Ethylbenzene <br />0200 <br />ND <br />0202 <br />600-140 <br />101 <br />250 0 <br />Xylenes (total) <br />0 600 <br />ND <br />0 560 <br />600-140 <br />933 <br />250 0 747 <br />Surrogate a, a, a-Trifluorotoluene <br />0200 <br />0207 <br />600-140 <br />103 <br />Sequoia Analytical - Sacramento <br />*Refer to end of report for text of notes and <br />Page 4 of 6 <br />