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• sr <br /> Sequoia 1455 McDowell Blvd North,Ste D <br /> Petaluma,CA 94954 <br /> C (707)792-1865 <br /> V,1F Analytical FAX(707) l 42 <br /> www sequotalabs abs com <br /> Gettler-Ryan-Dublin Project Tosco <br /> 6747 Sierra Ct,Suite J Project Number 2701 West March Lane,Stockton,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 02/27/01 10 24 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015MI8020M - Quality Control <br /> Sequoia Analytical- Petaluma <br /> Reporting Spike Source %REC RPD <br /> '--alms Result Limit Units Level Result /RHC Limas <br /> RPD lama Notes <br /> Batch 1020053-EPA 5030,waters <br /> Blank(1020053-BLKI) Prepared&Analyzed 02/02/01 <br /> Gasoline ND 500 ug/l <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tent-butyl ether ND 250 " <br /> Surrogate a a a-Trifluorotoluene 290 300 967 65-135 <br /> Surrogate 4-Bromofluorobenzene 289 300 963 65-135 <br /> LCS(1020053-BSI) Prepared&Analyzed 02/02/01 <br /> Gasoline 2240 50 0 ug/1 2750 81 5 65-135 <br /> Benzene 340 0 500 320 106 65-135 <br /> WIberizene <br /> e181 0500 193 938 65-135 <br /> 455 0 500 460 989 65-135 <br /> Xylenes(total) 227 0 500 231 983 65-135 <br /> Methyl tert-butyl ether 65 7 2 50 520 126 65-135 <br /> Surrogate a a a Trifluorotoluene 346 300 115 65-135 <br /> Surrogate 4-Bromofluorobenzene 304 300 101 65-135 <br /> Matrix Spice(1020053-MS1) Source P101733-02 Prepared&Analyzed 02/02/01 <br /> Gasoline 2350 500 ug/1 2750 109 81 5 65-135 <br /> Benzene 496 0 500 320 17 8 99 4 65-135 <br /> Toluene 171 0 500 193 ND 88 6 65-135 <br /> Ethylbenzene 513 0 500 460 656 973 65-135 <br /> Xylenes(total) 219 0 500 231 ND 94 8 65-135 <br /> Methyl tert-butyl ether 768 2 50 520 13 9 121 65-135 <br /> Surrogate a a a-Trifluorotoluene .344 300 115 65-135 <br /> Surrogate 4-Bromofluorobenzene 308 300 103 65-135 <br /> Sequoia Analytical-Petalu= The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 8 of 14 <br />