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1 <br /> S 1 E R R A <br /> ANALYTICAL <br /> Shaw Env=nmental&infrastructure,Inc Project Don Rogers <br /> 1326 N Market Blvd#1 Project Number 880039 IA/01020000 Reported <br /> Sacramento CA,95834 Project Manager David Herzog 02/12/03 12 10 <br /> BTEX(AME/TVPH-Gasohne Range Hydrocarbons(C4-C12) by EPA Method 8021B and 8015B in aeries-Quality Control <br /> Sierra Analytical Labs,Inc. <br /> Reporting Spike Source %REC RPA <br /> Analyte Result Lumt Units Level Result %REC Limits RPD Limit Notes <br /> Batch B3B0405-EPA 5030B P&T <br /> Blank(B3B0405-BLK1) Prepared 02/04/03 Analyzed 02/05/03 <br /> Benzene ND 016 ppmv <br /> lolueue NL 01.3 , <br /> &hylbenzene ND 012 " <br /> Xylenes(total) ND 012 " <br /> Methyl tert-butyl ether ND 14 ' <br /> Gasohne Range Hydrocarbons(C4-C12) ND 12 " <br /> Surrogate a,a,a-Tnfluorotoluene 403 335 120 70-115 <br /> LCS(B3B0405-BS1) Prepared 02/04/03 Analyzed 02/05/03 , <br /> Benzene 13 7 0 16 ppmv 125 110 80-120 <br /> Toluene 118 013 106 111 80-120 <br /> Etbylbenzene 108 012 923 117 80-120 <br /> Gasoline Range Hydrocarbons(C4-C12) 158 12 147 107 80-120 <br /> Duplicate(B3B0405-DUP1) Source 0302019-01 Prepared 02/04/03 Analyzed 02/05/03 <br /> Benzene ND 016 ppmv ND 30 <br /> Toluene ND 013 ND 30 <br /> mylbenzene ND 012 ND 30 <br /> Gasoline Range Hydrocarbons(C4-C12) ND 12 ND 30 'I <br /> 1 <br /> The results in this report apply to the samples analyzed to accordance with the chain of custody document This analytical report must be reproduced In Its enturety <br /> 26052 MERIT CIRCLE SUITE 105, LAGUNA Hus, CALIFORNIA 92653 ' <br /> TELEPHONE (949) 348-9389 FAX (949) 348-9115 <br /> E-MAIL SIERRALA135 ala SIERALABS NET Page 3 of 4 <br />