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885 Jarvis Drive <br /> Sequoia Morgan Hill CA 95037 <br /> {408)700 <br /> Analytical FAX(408)78282 63 6308 <br /> www sequmatabs com <br /> 721 <br /> S Corporation [Arcola Project ARCO 46100,Tracey,CA MOL0796 <br /> 0 Gateway Oaks Dr, Ste 300 Project Number GOC I Y-0005 Reported <br /> ramento CA,95833 Project Manager Jay Johnson 01/16/06 16 27 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source °/.REC APD <br /> Analyte Result Lima Units Level Result %REC Limits RPD Lima Notes <br /> Batch 6A03003-EPA 5030B P/T/EPA 8260B <br /> Laboratory Control Sample(6AO3003-BSI) Prepared&Analyzed 01/03/06 <br /> tert-Amyl methyl ether 760 050 ug/I 752 101 80-115 <br /> Benzene 260 050 258 101 65-115 <br /> tert-Butyl alcohol 924 5 0 71 6 129 75-150 <br /> Di-isopropyl ether 7 92 050 7 56 105 75-125 <br /> 1 2-Dibromoethane(EDB) 727 050 744 98 85-120 <br /> 1,2-Dichloroethane 7 68 050 736 104 85-130 <br /> Ethanol 909 100 70 8 128 70-135 <br /> Ethyl tert-butyl ether 744 050 752 99 75-130 <br /> Ethylbenzene 329 050 3 77 87 75-135 <br /> Methyl tert-butyl ether 3 39 050 3 51 97 65-125 <br /> Toluene 180 050 18 6 97 85-120 <br /> es(total) 222 050 ii 20 6 108 85-125 <br /> me Range Organics(C4-C12) 225 50 220 102 60-140 <br /> Surrogate 1 2-Dichloroethane-d4 2 41 250 96 60-135 <br /> Matrix Spike(6AO3003-MSI) Source MOL0995-03 Prepared&Analyzed 01/03/06 <br /> tert-Amyl methyl ether 853 5 0 ug/I 75 2 ND 113 80-115 <br /> Benzene 274 5 0 258 ND 106 65-115 <br /> tert-Butyl alcohol 1020 50 716 ND 142 75-120 LM <br /> Di-isopropyl ether 829 5 0 75 6 ND 110 75-125 <br /> 1 2-Dibromoethane(EDB) 75 2 5 0 744 ND 101 85-120 <br /> 1,2-Dichloroethane 750 5 0 73 6 ND 102 85-130 <br /> Ethanol 805 1000 708 ND 114 70-135 <br /> Ethyl tert-butyl ether 845 5 0 752 ND 112 75-130 <br /> Ethylbenzene 348 5 0 377 ND 92 75-135 <br /> Methyl tert-butyl ether 672 5 0 351 660 34 65-125 BB LN <br /> Toluene 168 5 0 186 ND 90 85-120 <br /> Xylenes(total) 216 5 0 206 ND 105 85-125 <br /> Gasoline Range Organics(C4-C12) 2840 500 2200 570 103 60-140 <br /> Surrogate 1,2-Dichloroethane-d4 2 42 250 97 60-135 <br /> uoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise slated results are reported on a wet weight basis <br /> This analytical report must he reproduced in its entirety <br /> Page 14 of 19 <br />