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404 N Wiget Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> -9600 <br /> 4 i!D <br /> (925)988-9600 <br /> FAX(925)98&9673 <br /> Analytical www sequoialabs com <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco# 11192 Reported <br /> Dublin CA,94568 Project Manager Doug Lee 11-Jan-01 18 32 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015NV8020M- Quality Control <br /> Sequoia Analytical -Petaluma <br /> Reportuig Spike Source °/oREC RPD <br /> Analyte Result Lunt Units Level Result %REC Lunits RPD Lunt Notes <br /> Batch 1010098-EPA 5030,waters <br /> Blank(1010098-BLKI) Prepared&Analyzed 05-Jan-01 <br /> Gasohne ND 500 ug/1 <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Surrogate a Aa-Tnfluorotoluene 296 300 98 7 65-135 <br /> Surrogate 4-Bromoj7uombenzem 291 300 970 65-135 <br /> LCS(1010098-BSI) Prepared&Analyzed 05-Jan-01 <br /> Gasohne 2800 500 ug/1 2750 102 65-135 <br /> Benzene 398 0 500 320 124 65-135 <br /> Toluene 207 0 500 193 107 65-135 <br /> tie 437 0 500 460 95 0 65-135 <br /> (tZ) 222 0 500 231 961 65-135 <br /> Surrogate a as a-Trlf luorotoluene 346 300 115 65-135 <br /> Surrogate 4-Bramofluorobenzene 320 300 107 6S-135 <br /> Matrix Spike(1010098-MSJ) Source P101036-02 Prepared&Analyzed 05-Jan-01 <br /> Gaaolme 2970 500 ug/1 2750 ND 108 65-135 <br /> Benzene 406 0 500 320 ND 127 65-135 <br /> Toluene 215 0 500 193 ND 111 65-135 <br /> Ethylbenzene 448 0 500 460 ND 974 65-135 <br /> Xylenes(tom) 229 0 500 231 ND 991 65-135 <br /> Surrogate a Ao-Trnfluorotoluene 343 300 114 65-135 <br /> Surrogate 4-Bromofluorobemene 324 300 108 65-135 <br /> Matrix Spike Dup(1010098-MSD1) Source P101036-02 Prepared&Analyzed 05-Jan-01 <br /> Gasoline 3010 500 ug/1 2750 ND 109 65-135 134 20 <br /> Benzene 409 0 500 " 320 ND 128 65-135 0 736 20 <br /> Toluene 220 0 500 193 ND 114 65-135 230 20 <br /> Ethylbenzene 478 0 500 460 ND 104 65-135 648 20 <br /> Xylenes(total) 237 0 500 " 231 ND 103 65-135 343 20 <br /> Surrogate ga o-Trtjluorotoluene 340 300 Ila 65-135 <br /> Surrogate 4-Bromofluorohemene 319 300 106 65-135 <br /> Sola Analytical-Walnut Creek The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document Tlas analytical report must be reproduced to its entirety <br /> Page 6 of 7 <br />