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5037 <br /> Sequoia 77 <br /> 885 Jarvis Dmc <br /> Morgan Hill, <br /> S .960 <br /> a (aos)776-9600 <br /> Analytical FAXequo labs,c rn <br /> +.vww scquoialabscom <br /> Secor-Rancho Cordova(ARCO) Project ARCO#2133,Rancho Cordova,CA MMI0807 <br /> 3017 Kilgore Rd Suite 100 Project Number NIP Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 10/20/03 16 45 <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 3J08045-EPA 5030B Modified <br /> Matrix Spike Dup(3J08045-MSDI) Source MM10807-12 Prepared 10/08/03 Analyzed 10/09/03 <br /> Gasoline Range Organics(C6-C 10) 376 50 ug/l 440 ND 855 70 113 3 79 9 <br /> Methyl tert-butyl ether 793 0 50 101 0 13 772 63-137 0 887 13 <br /> Benzene 532 0 50 648 0 070 81 0 78-124 0 749 12 <br /> Toluene 31 2 0 50 297 029 104 78-129 459 10 <br /> Ethylbenzene 7 51 050 720 ND 104 84-117 4 63 10 <br /> Xylenes(total) 37 3 050 33 7 039 110 83-125 244 11 <br /> Surrogate 12-Dichloroethane-d4 550 500 110 78-129 <br /> Batch 3J09001 -EPA 5030B PIT <br /> Blank(3J09001-BLKI) Prepared&Analyzed 10/09/03 <br /> Gasoline Range Organics(C6 C10) ND 50 Ug/1 <br /> th u ND 100 <br /> Butyl alcohol ND 20 <br /> Methyl tert-butyl ether ND 050 <br /> Di-isopropyl ether ND 050 " <br /> Ethyl tert butyl ether ND 050 " <br /> tert-Amyl methyl ether ND 050 " <br /> 1,2-Dichloroethane ND 050 " <br /> 1,2-Dtbromoethane(EDB) ND 050 " <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate 12-Dichloroethane-d4 481 5 00 962 78-129 <br /> Laboratory Control Sample(3J09001-BS1) Prepared&Analyzed 10/09/03 <br /> Ethanol 179 100 ug/l 200 895 31-186 <br /> tert-Butyl alcohol 569 20 500 114 0-206 <br /> Methyl tert-butyl ether 943 050 100 943 63-137 <br /> Di-isopropyl ether 9 63 050 100 963 76-130 <br /> Ethyl tert-butyl ether 938 050 100 938 61-141 <br /> tert-Amyl methyl ether 925 050 100 925 56-140 <br /> 1,2-Dichloroethane 9 67 050 100 967 77-136 <br /> 1,2-Dtbromoethane(EDS) 106 050 100 106 77-132 <br /> Benzene 946 050 100 946 78-124 <br /> Toluene 988 050 10 0 98 8 78-129 <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 busts <br /> This analytical report must be reproduced in its entirety <br /> 17 of 22 <br />