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Sequoia <br />Analytical <br />1551 Industrial Road <br />San Carlas CA 94070-4111 <br />(650)232-9600 <br />FAX (650) 232-9612 <br />www sequoiatabs [- <br />Gettler-Ryan/Geostrategies(1) Protect Gettler-Ryan/Chevron(I) Sampled 7110100 <br />6747 Sierra Court, Suite J Project Number Chevron #9-5775/ 301 West Kettleman Ln Received 7/11/00 10 55 <br />Dublin, CA 94568 Project Manager Scott Polston Reported 7/11/00 14 45 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX by DHS LUFT/Quality Contrc►1 <br />Sequoia Analytical - San Carlos <br />Date Spike Sample QC Reporting Lntnt Recov RPD RPD <br />e„A1. rP Analvzed Level Result Result Units Recov Limits % Limit % Notes* <br />Batch 0070040 <br />Date Preoared <br />_ 7111100 <br />Extraction Method EPA 5030B [P/T1 <br />Blank <br />0070040-BLK1 <br />Purgeable Hydrocarbons as Gasoline <br />7111/00 <br />ND <br />ug/l <br />500 <br />Benzene <br />° <br />ND <br />" <br />0.500 <br />Toluene <br />ND <br />0 500 <br />Ethylbenzene <br />ND <br />0 500 <br />Xylenes (total) <br />itND <br />0 500 <br />Surrogate a s a-Trifluorotoluene <br />of100 <br />968 <br />600-140 <br />968 <br />LCS <br />0070040 -BSI <br />Bene <br />7/11/00 <br />100 <br />946 <br />ugll <br />700-130 <br />94 6 <br />Toluene <br />100 <br />863 <br />700-130 <br />863 <br />Ethylbenzene <br />too <br />866 <br />700-130 <br />86 6 <br />Xylenes (total) <br />300 <br />260 <br />700-130 <br />867 000000w <br />Surrogate a,a,a-Trifluorotoluene <br />100 <br />103 <br />600-140 <br />103 <br />LCS <br />0070040-BS2 <br />Purgeable Hydrocarbons as Gasoline <br />7/11/00 <br />250 <br />241 <br />ug/1 <br />700-130 <br />964 <br />Surrogate a s a-Trifluorotoluene <br />11100 <br />999 <br />If600-140 <br />999 <br />Batch 0070041 <br />Date Pre ared <br />7111100 <br />Extraction Method EPA 5030B PIT <br />Blank <br />0070041-BLKI <br />Purgeable Hydrocarbons as Gasoline <br />7/11/00 <br />ND <br />ug/1 <br />500 <br />Benzene <br />" <br />ND110 <br />500 <br />Toluene <br />ND <br />" <br />0 500 <br />Ethylbenzene <br />ND <br />0 500 <br />Xylenes (total) <br />ND <br />0 500 <br />Sarrogate a,a,a-Trifluorotoluene <br />of100 <br />105 <br />600-140 <br />105 <br />LCS <br />0070041 -BSI <br />Bene <br />7/11/00 <br />100 <br />9 15 <br />ug/1 <br />700-130 <br />915 <br />Toluene <br />100 <br />868 <br />700-130 <br />968 <br />Ethylbenzene <br />100 <br />841 <br />700-130 <br />84 1 <br />Xylenes (total) <br />300 <br />255 <br />700-130 <br />850 <br />Surrogate a,a a-Trifluorotoluene <br />100 <br />933 <br />600-140 <br />933 <br />LCS I0070041-BS2 <br />Purgeable Hydrocarbons as Gasoline <br />7111100 <br />250 <br />210 <br />ug/1 <br />700-130 <br />840 <br />Surrogate a,a,a-Trifluorotoluene <br />1110 <br />0 <br />989 <br />01600-140 <br />989 <br />0 <br />Sequoia Analytical - San Carlos *Refer to end of report for text of notes and definitions <br />Page 3 of 4 <br />