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885 iaCV]S 9037 <br /> Sequoia MorgaziHtll CA 95437 <br /> � <br /> a_ _� (408)776-9600 <br /> Analytical FAX(403)782-6308 <br /> www sequoialabs com <br /> Secor-Rancho Cordova(ARCO) Project ARCO 114932,Stockton,CA MOJ0547 <br /> 3017 Kilgore Rd Suite 100 Project Number GOC BD-0001 Reported <br /> Rancho Cordova CA,95670 Project Manager Clinton Harms 10/20/05 12 56 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Sptke Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 5J15005-EPA 5030B P/T/EPA 8260B <br /> Matrix Spike(5315005-MSI) Source MOJ0565-01 Prepared&Analyzed 10/15/05 <br /> ten-Amyl methyl ether 314 10 ug/l 301 ND 104 80 115 <br /> Benzene 157 10 103 66 88 65 115 <br /> tert-Butyl alcohol 3040 400 2860 ND 106 75-120 <br /> Di-isopropyl ether 325 10 " 302 ND 108 75-125 <br /> 1,2-Dibromoethane(EDB) 302 10 298 ND 101 85120 <br /> 1 2-Dtchloroethane 322 10 294 ND 110 85-130 <br /> Ethanol 2890 2000 2830 ND 102 70-135 <br /> Ethyl tett-butyl ether 328 10 301 ND 109 75-130 <br /> Ethylbenzene 1180 10 151 1100 53 75-135 BB,LN <br /> Methyl tert-butyl ether 148 10 140 ND 106 65-125 <br /> Toluene 868 10 744 190 91 85-120 <br /> Xylenes(total) 2550 10 824 1900 79 85-125 LN <br /> Gasoline Range Organics(C4-C12) 27700 1000 8800 19000 110 60-140 <br /> Surrogate 12-Dichloroethane-d4 236 150 94 60-135 <br /> Matrix Spike Dup(5,115.005-MSDI) Source MOJ0565-01 Prepared 10/15/05 Analyzed 10/16/05 _ <br /> ten-Amyl methyl ether 319 10 ugA 301 ND 106 80-115 2 15 <br /> I <br /> Benzene 159 10 103 66 90 65-115 1 20 <br /> Cert-Butyl alcohol 2970 400 2860 ND 104 75-120 2 25 <br /> Di isopropyl ether 328 10 302 ND 109 75-125 0 9 15 <br /> 1,2-Dibromoethane(EDB) 299 10 298 ND 100 85-120 l 15 <br /> 1,2-Dichloroethane 322 10 294 ND 110 85-130 0 20 <br /> Ethanol 3140 2000 2830 ND 111 70-135 8 35 <br /> Ethyl Cert-butyl ether 330 10 301 ND 110 75-130 0 6 25 <br /> Ethylbenzene 1280 10 151 1100 119 75-135 8 15 <br /> Methyl tent-butyl ether 145 10 140 ND 104 65-125 2 20 <br /> Toluene 897 10 744 190 95 85-126 3 20 <br /> Xylenes(total) 2740 10 824 1900 102 85-125 7 20 <br /> Gasoline Range Organics(C4-C12) 28200 1000 8800 18000 116 60-140 2 25 <br /> Surrogate 12-Drchloroethane-d4 140 250 96 60-135 <br /> Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed rn accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight balls <br /> • This analytical report must be reproduced to its entirety <br /> Page 17 of 24 <br />