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Sequoia Morgan MSHi Jarvis 95037 <br /> ll CA 95037 <br /> (408)776 9600 <br /> Analytical FAX(408)782(308 <br /> www scyuotalabs cont <br /> 1JRS Corporation[Art,olI Project ARCO 95469, Stockton CA MPC0315 <br /> 2870 Gateway Oaks Dr,Ste 300 Project Number GOBZP-0010 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 03/30/06 14 47 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 6018011 -EPA 50308 P/T/EPA 8260E <br /> Blank(6018011_BLKI) _ _ Prepared&Analyzed 03/18/06 <br /> tert-Amyl methyl ether ND 050 ug/l <br /> Benzene ND 050 PE <br /> tert-Butyl alcohol ND 20 " <br /> Di-isopropyl ether ND 050 " <br /> 1 2-Dtbromoethane(EDB) ND 050 <br /> 1,2-Dtchloroethane ND 050 " <br /> Ethanol ND 300 <br /> Ethyl tert butyl ether ND 050 " <br /> EthylbLnzenL ND 050 <br /> Methyl tert-butyl ether ND 050 " <br /> Toluene ND 050 <br /> Xylenes(total) ND 050 <br /> Gasoline Range Organics(C4-C12) ND 50 — <br /> Surrogate 12-Dichlorocthane-d4 4 73 5 00 95 60 135 <br /> Surrogate Toluene-d8 521 5 00 104 70 120 <br /> Surrogate Dibromofluoromethane 4 78 5019 96 65-130 <br /> Surrogate 4 Bromofluorobenzene 4 99 5 00 100 70-120 <br /> Laboratory Control Sample(6C18011-BS1) Prepared&Analyzed 03/18/06 <br /> tort-Amyl methyl ether 167 050 ug/l 16 3 102 80 its <br /> Benzene 600 0 50 504 119 65 115 HL PE <br /> tert Butyl alcohol 149 20 169 88 75 150 <br /> Di isopropyl ether 177 0 50 162 109 75-125 <br /> 1 2-Dibrontot thane(EDB) 16 5 050 166 99 85 120 <br /> 1 2-Dtchloroethane 17 1 050 15 5 110 85-130 <br /> Ethanol 132 300 165 80 70-135 <br /> Ethyl tert butyl ether 17 8 050 164 109 75-130 <br /> Ethylbenzene 760 050 728 104 75-135 <br /> Methyl tert-butyl ether 808 050 7 84 103 65-125 <br /> Toluene 36 1 050 380 95 85-120 <br /> Xylenes(total) 42 2 050 408 103 85-125 <br /> Gasoline Range Organics(C4-C 12) 442 50 440 100 60-140 <br /> Surrogate 1 2 Drrhloroethanc d4 5 15 500 103 60-135 <br /> Surrogate Toluenc d8 522 500 104 70-120 <br /> Surrogate Dtbromofluoromethane 511 500 102 65-130 <br /> Surrogate 4-Bromofluorobcnzene 5 03 500 101 70-120 <br /> Sequoia Analytical -Morgan Hill The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherKtse stated results are reported on a wet weight basis <br /> • This analytical report must be reproduced to its entirety <br /> Page 21 of 29 <br />