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4 <br /> ANALYTICAL� A <br /> ' <br /> Shaw Environmental&Infrastructure,Inc Project Don Rogers <br /> 1326 N Market Blvd 41 Project Number 880039 IA/01020000 Reported <br /> Sacramento CA,95834 Project Manager David Herzog 10/02/03 15 19 <br /> BTEX/MTBEf1WH-Gasoline Range Hydrocarbons(C4-C12)by EPA Method 8021B and 8015B in series-Quality Control <br /> Sierra Analytical Labs,Inc. <br /> Reportmg Spike Source %REC ::�RPDA�yte Result Lumt Units Level Result %REC Lumts RPD Notes <br /> Batch B3112515-EPA 5030B P&T <br /> Blank(B3][2515-BLKI) Prepared 09/24/03 Analyzed 09/25/03 <br /> Benzene ND 016 ppmv <br /> Toluene ND 013 ' <br /> Ethylbenzcne ND 012 " <br /> Xyieues(total) ND 012 " <br /> Methyl tertbutyl ether ND 14 " <br /> Gasoline Range Hydrocarbons(C4-C12) ND 12 <br /> Surrogate a a,a-7rouorotoluene 359 335 107 70-125 <br /> LCS(B312515-BSI) _ Prepared 09/24/03 Analyzed 09/25/03 ' <br /> Benzene 14 2 0 16 ppmv 12 5 114 80-120 <br /> Toluene 121 013 10 6 114 80-120 <br /> Ethylbenzene 104 012 923 113 80-120 <br /> Gasoline Range Hydmcarbons(C4-C12) 128 12 " 147 871 80-120 <br /> Duplieate(B312515-DUP1) Source 0309383-01 Prepared 09/24/03 Analyzed 09/25/03 <br /> 4d <br /> Benzene Y ND 016 ppmv ND 30 <br /> Toluene ND ND 013 ND 30 <br /> Ethylbenzene ND 0-12-" <br /> ND 30 <br /> Gasoline Range Hydrocarbons(04-C 12) ND I2 " ND 30 <br /> The results in this report apply to the samples analyzed to accordance with the chain ofcustody document This analytical report must be reproduced to its entare <br /> 26052 MERIT CIRCLE SUITE 105, LAGUNA HILLS, CALIFORNIA 92653 <br /> TELEPHONE (949) 346-9389 FAx (949) 348-9115 <br /> E-MAIL SIERRALABS @a SIERALABS NET Page 3 of <br />