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1 <br /> a <br /> AILRTCA <br /> NAYIAL <br /> Shaw Envummnental&Infrastructure,Inc Project Don Rogers <br /> 1326 N Market Blvd 411 Project Number 8800391A/01020000 Reported <br /> Sacramento CA,95834 Project Manager David Herzog 05/12/03 16 01 <br /> BTEX/MTBEITVPH-Gasohne Range Hydrocarbons(C4-C12)by EPA Method 8021B and 9015B m series-Quality Control <br /> Sierra Analytical Labs,Inc. <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limn Umts Level Result %RBC Lumts RPD Limit Rotes <br /> Batch B3E0625-EPA 5030B P&T <br /> Blank(WE0625-BLK1) Prepared 05/06/03 Analyzed 05/08/03 <br /> Benzene ND 016 ppmv ' <br /> Toluene ND 013 " <br /> Ethylbenzene ND 012 " <br /> Xylenes(total) ND 012 " <br /> Methyl tett-butyl ether ND 14 <br /> Gasoline Range Hydrocarbons(C4-C 12) ND 12 " <br /> Surrogate a,a,a-7r(fluorotoluene 261 335 779 70-125 <br /> LCS(WE0625-BSI) Prepared 05/06/03 Analyzed 05/08/03 <br /> Benzene 10 4 0 16 ppmv 125 832 80-120 <br /> Toluene 867 0 13 " 106 818 80-120 <br /> Ethylbenzene 801 0 12 923 868 80-120 <br /> Gasoline Range Hydrocarbons(C4-C12) 160 12 147 109 80-120 <br /> Duplicate(WE0625-DUP1) Source-0305064-02 Prepared 05/06/03 Analyzed 05/08/03 MINIM <br /> Benzene ND 016 ppmv ND 30 <br /> Toluene 0 446 0 13 " 044 135 30 <br /> Ethylbenzene ND 012 ND 30 <br /> Gasoline Range Hydrocarbons(C4-C12) 386 12 38 1 57 30 , <br /> 1 <br /> The results In this report apply to the samples analyzed in accordance with the chain of custody document This analytical report must be reproduced in its entirety <br /> 26052 MERIT CIRCLE SUITE 105, LAGUNA HILLS, CALIFORNIA 92653 J TELEPHONE (949) 348-9389 FAx (949) 348-9115 <br /> E-MAIL SIERRALABS @ SIERALABS NET Page 3 of 4 <br />