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885 Jarvis Drive <br /> �Z_ Sequoia Morgan Hill CA 95037 <br /> (408)776-9600 <br /> Analytical FAX(408)782.6308 <br /> www sequoialab&com <br /> Secor-Rancho Cordova(ARCO) Protect ARCO#4932,Stockton,CA MMJ0401 <br /> 3017 Kilgore Rd Suite 100 Project Number 38984 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 11/06/03 08 05 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical -Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunn Units Level Result %REC Limns RPD Limit Notes <br /> Batch 3J22002-EPA 5030B P/T <br /> Matrix Spike(3J22002-MSI) Source MMJ0278-01 Prepared&Analyzed 10/22/03 <br /> Ethanol 105000 50000 ug/I 100000 ND 105 31-186 <br /> tert-Butyl alcohol 22800 10000 25000 ND 91 2 0-206 <br /> Methyl tert-butyl ether 27200 250 5000 22000 104 63-137 <br /> Di-isopropyl ether 5630 250 5000 ND 113 76-130 <br /> Ethyl tert-butyl ether 5910 250 5000 ND 118 61-141 <br /> tort Amyl methyl ether 5780 250 5000 ND 116 56-140 <br /> 1,2 Dtchloroethane 4970 250 5000 ND 994 77-126 <br /> I,2 Dtbromoethane(EDB) 5080 250 5000 ND 102 77-132 <br /> Benzene 5320 250 5000 ND 106 78 124 <br /> Toluene 4780 250 5000 ND 95 6 78-129 <br /> Ethylbenzene 5250 250 5000 ND 105 84-117 <br /> Xylenes(total) 14600 250 15000 ND 97 3 83-125 <br /> Surrogate 12-Dtchloroethane-d4 492 500 994 78-129 <br /> Matrix Spike Dup(3J22002-MSDI) Source MMJ0278-01 Prepared&Analyzed 10/22/03 <br /> Ethanol 105000 50000 ug/l 100000 ND 105 31-186 000 37 <br /> tort Butyl alcohol 24400 10000 25000 ND 97 6 0-206 678 22 <br /> Methyl tert-butyl ether 26700 250 5000 22000 940 63-137 186 13 <br /> Di-isopropyl ether 5560 250 5000 ND 111 76-130 125 9 <br /> Ethyl tert-butyl ether 5840 250 5000 ND 117 61-141 1 19 9 <br /> tort-Amy]methyl ether 5720 250 5000 ND 114 56-140 104 12 <br /> 1,2-Dtchloroethane 4960 250 5000 ND 992 77-126 0201 13 <br /> 1,2-Dtbromoethane(EDB) 5020 250 5000 ND 100 77-132 1 19 9 <br /> Benzene 5330 250 5000 ND 107 78-124 0188 12 <br /> Toluene 4780 250 5000 ND 95 6 78-129 000 10 <br /> Ethylbenzene 5210 250 5000 ND 104 84-117 0 765 10 <br /> Xylenes(total) 14800 250 15000 ND 98 7 83-125 136 11 <br /> Surrogate 12 Dtchloroethane-d4 482 500 964 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 basis <br /> This analytical report most be reproduced in its enttrety <br /> 15 of 21 <br />