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Sequoia <br />Analytical <br />819 Striker Avenue Suite 8 <br />Sacramento CA 95834 <br />(916)921-9600 <br />FAX (916) 921-0100 <br />www sequoialabs co - <br />settler -Ryan - Dublin <br />Project <br />Chevron 9-5775, Lodi , CA <br />Sampled <br />8116100 <br />1747 Sierra Court, Ste 7 <br />Project Number <br />101207 01 <br />Received <br />8116100 <br />)ublin CA 94568 <br />Project Manager <br />S Polston <br />Reported <br />8/17-18/00 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX by DHS LUFTIQualtty Control <br />Sequoia Analytical - Sacramento <br />Date Spike Sample QC Reporting Limit Recov RPD RPD <br />Analvte Analvzed Level Result Result Units Recov Limits % Limit % Notes* <br />Batch 0080204 Date Prepared 8_117/00 Extraction Method EPA 5030E (MeOH) <br />Blank 0080204-BLK 1 <br />Purgeable Hydrocarbons 8117/00 ND ug/I 500 <br />Benzene I.ND 0 500 <br />Toluene ND 0 500 <br />Ethylbenzene ND 0 500 <br />Xylenes (total) ND 0 500 <br />Surrogate a a,a-Trifluorotoluene 100 912 600-140 912 <br />LCS <br />0080204 -BSI <br />105 <br />600-140 <br />105 <br />Benzene <br />8/1[7/00 100 <br />966 ug/l <br />700-130 <br />966 <br />Toluene <br />10 0 <br />932 <br />700-130 <br />932 <br />Ethylbenzene <br />10 0 <br />930 <br />700-130 <br />930 <br />hlenes (total) <br />300 <br />290 <br />700-130 <br />933 <br />a a a -e rijiuorotomene <br />Matrix Spike <br />Benzene <br />Toluene <br />Ethylbenzene <br />Surrogate a a a-Trifluorotoluene <br />Matrix Spike Dui <br />Benzene <br />Toluene <br />Ethylbenzene <br />Surrogate a a a -Tri luorotoluene <br />• <br />100 <br />ND <br />105 <br />600-140 <br />105 <br />0080204-MS1 <br />S008142-05 <br />" 100 <br />ND <br />947 <br />8117100 100 <br />ND <br />998 ug/l <br />600-140 <br />998 <br />" 100 <br />ND <br />955 <br />600-140 <br />955 <br />" 100 <br />ND <br />968 <br />600-140 <br />968 <br />" 300 <br />ND <br />290 <br />600-140 <br />967 <br />100 <br />600-140 <br />915 <br />600-140 <br />915 <br />0080204-MSD1 S008142-05 <br />8117100 100 <br />ND <br />991 ug/l <br />600-140 <br />991 <br />250 <br />0 704 <br />" 100 <br />ND <br />947 <br />600-140 <br />947 <br />250 <br />0 841 <br />" 100 <br />ND <br />960 <br />600-140 <br />960 <br />250 <br />0 830 <br />" 300 <br />ND <br />286 <br />600-140 <br />953 <br />250 <br />146 <br />100 <br />990 <br />600-140 <br />990 <br />Sequoia Analytical - Sacramento *Refer to end of report for text of notes and definitions <br />Page 10 of 16 <br />