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Drive <br /> Sequoia 885Jarvis <br /> 95037 <br /> Morgan Hill,CA 95037 <br /> a— ) (408)776 9600 <br /> Analytical FAX(408)782-6308 <br /> www sequoialabs con <br /> OURS Cormoration 111 Project ARCO#2093,Tracy,CA <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number ARCO#2093,Tracy,CA Reported <br /> Sacramento CA,95833 Project Manager Vern Elarih 09/30/02 09 20 <br /> Total Purgeable Hydrocarbons(C6-C10) by EPA 8015B modified,BTEX by EPA 8021B-Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limn Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2I23004-EPA 5030E [PITT <br /> Blank(2123004-BLKI) Prepared&Analyzed 09/23/02 <br /> Gasoline Range Organics(C6-C10) ND 50 ug/l <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Surrogate a a a-Trifluorotoluene 102 100 102 70-130 <br /> LCS(2123004-BSI) Prepared&Analyzed 09/23/02 <br /> Benzene 103 050 ugll 10 0 103 70-130 <br /> Toluene 9 59 0 50 too 959 70-130 <br /> Ethylbenzene 9 05 050 10 0 905 70-130 <br /> Xylenes(total) 263 0 50 30 0 87 7 70-130 <br /> *CrrS0(2,23004-.S2) <br /> gate a a a-Trifluorotoluene 986 100 986 70-130 <br /> Prepared&Analyzed 09/23/02 <br /> Gasoline Range Organics(C6-C10) 251 50 ug/l 250 100 70-130 <br /> Surrogate a a a-Trifluorotoluene 14 7 " 10 0 147 70-130 S-02 <br /> Matrix mike(2123004-MSI) Source MLI0355-09 Prepared&Analyzed 09/23/02 <br /> Gasoline Range Organics(C6-C10) 507 50 ugll 550 ND 92 2 60-140 <br /> Benzene 8 66 050 660 ND 131 60-140 <br /> Toluene 43 5 050 39 7 ND 110 60-140 <br /> Ethylbenzene 9 12 050 920 ND 99 1 60-140 <br /> Xylenes(total) 45 5 050 46 1 ND 98 7 60-140 <br /> Surrogate a a a-Trifluorotoluene 168 100 168 70-130 QM-07 <br /> Matrix Spike Dup(2123004-MSD,) Source ML10355-09 Prepared&Analyzed 09/23/02 <br /> Gasoline Range Organics(C6-C10) 496 50 ug/l 550 ND 90 2 60-140 2 19 25 <br /> Benzene 8 02 050 660 ND 122 60-140 7 67 25 <br /> Toluene 42 3 050 39 7 ND 107 60-140 2 80 25 <br /> Ethylbenzene 9 28 0 50 9 20 ND 101 60-140 1 74 25 <br /> Xylenes(total) 44 7 0 50 46 1 ND 970 60-140 1 77 25 <br /> Surrogate a a a-Trifluoratoluene 14 0 100 140 70-130 QM-07 <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report must be reproduced in its entirety <br /> 10 of 13 <br />