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rl t i <br /> 985 Jarvis Drove <br /> Sequoia Morgan Holl 095037 <br /> (408)7776-9600 <br /> FAX Analytical wwseq 9) labsco92 8 <br /> www scqumalebs coni <br /> URS Corporation[Arcot] Project ARCO#0760,Lodi,CA MPA1406 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number GOC8R-0002 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 02110/06 16 30 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %R.EC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 6BO6031 -EPA 5030B PIT 1 EPA 8260B <br /> Blank(6B06031-BLK1) Prepared&Analyzed 02/06/06 <br /> tert-Amyl methyl ether ND 050 ug/I <br /> Benzene ND 0 50 <br /> tert Butyl alcohol ND 20 <br /> Di-isopropyl ether ND 050 <br /> 1,2-Dibromoethane(EDB) ND 0 50 <br /> 1,2 Dichloroethane ND 050 <br /> Ethanol ND 300 <br /> Ethyl tert-butyl ether ND 050 <br /> Ethylbenzene ND 050 " <br /> Methyl tert-butyl ether ND 050 <br /> Toluene ND 050 <br /> ]encs(total) ND 050 S <br /> ohne Range Organics(C4-C 12) ND 50 <br /> z <br /> Surrogate 12-Dwhloroethane-d4 459 500 92 60-135 <br /> I <br /> Laboratory Control Sample(6806031-BSI) Prepared&Analyzed 02/06/06 <br /> tort-Amyl methyl ether 168 050 ug/1 163 103 80 115 <br /> Benzene 495 050 504 98 65-115 <br /> tert-Butyl alcohol 150 20 ' 169 89 75-150 - - <br /> Di-isopropyl ether 165 050 162 102 75-125 <br /> 1 2 Dibromoethane(EDB) 15 8 050 166 95 85-120 <br /> 1,2-Dichloroethane 148 050 15 5 95 85-130 <br /> Ethanol 134 300 165 81 70-135 - <br /> Ethyl tert-butyl ether 15 9 0 50 164 97 75-130 <br /> Ethylbenzene 6 32 050 7 28 87 75-135 <br /> Methyl tert-butyl ether 747 050 7 84 95 65-125 <br /> Toluene 406 050 380 107 85-120 <br /> Xylenes(total) 399 050 40 8 98 85-125 <br /> Gasoline Range Organics(C4 C)2) 389 50 440 88 60-140 <br /> Surrogate 12 Dichloroethane-d4 4 76 500 95 60-135 <br /> Sequoia Analytical -Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 6 of 8 <br />