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S I E R R A <br /> ANALYTICAL • <br /> Shaw Environmental&Inf-astructure,Inc Project Don Rogers <br /> 1326 N Market Blvd #1 Project Number 880039 IA/01020000 Reported <br /> Sacramento CA,95834 Project Manager David Herzog 10/28/03 15 10 <br /> BTEXIMTBEfIWH»Gasoline Range Hydrocarbons(C4-C12) by EPA Method 8021B and 9015B in series-Quality Control <br /> Sierra Analytical Labs,Inc. <br /> Reporting Spike Source %REC RPD <br /> Analyte Result L¢iut Units Level Result %REC Limits RPD Lumt Notes <br /> Batch B3J1511 -EPA 5030B P&T , <br /> Blank(B3J1511-BLK1) - '.-Prepared&Analyzed 10/15/03 —� <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-Ci2) ND 12 " <br /> Surrogate a a,a-Trruorotoluene 303 335 904 70-125 <br /> LCS(B3J1511.BS1) Prepared&Analyzed 10/15/03 ' <br /> Benzene 144 0 16 ppmv 125 115 80-120 <br /> Toluene 12 2 0 13 10 6 115 80-120 <br /> Ethylbenzene 10 4 0 12 923 113 80-120 <br /> Gasolme Range Hydrocarbons(C4-C12) 126 12 147 857 80-120 <br /> Duplicate(BU1511-DUPl) Source 0310191-01 Prepared&Analyzed 10/15/03 <br /> Benzene-- -- - — — ---- ND — 0 16 ppmv ND 30 <br /> Toluene ND 013 ND 30 <br /> Efltylbenzene ND 012 ND 30 <br /> Gasoline Range Hydrocarbons(C4-C 12) ND 12 ND 30 ' <br /> 1 <br /> The results to this report apply to the samples analyzed in accordance with the chain of custody document Thu analytical report must be reproduced in its entirety <br /> 26052 MERIT CIRCLE SUITE 105, LAGUNA HILLS, CALIFORNIA 92653 , <br /> TELEPHONE (949) 348-9389 FAx (949) 348-9115 <br /> E-MAIL SIERRALAeS @ SIERALABS NET Page 3 of 4 <br />