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}--�� <br /> Sequoia <br /> 8Jarvis Drive <br /> s� uQla Morgan Hill CA 95037037 <br /> �D7 <br /> 408)782-6300 <br /> Analytical <br /> FAX 408 782-6308 <br /> www sequoialabs com <br /> URS Corporation [Arcot I Project ARCO#6100,Tracey,CA MOL0796 <br /> 2870 Gateway Oaks Dr Ste 300 Project Number GOCI Y-0005 Reported <br /> Sacramento 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 RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 5L28012- EPA 5030B P/T/EPA 8260B <br /> Laboratory Control Sample Dup(5L28012-BSDI) Prepared&Analyzed 12/28/05 <br /> tert-Amyl methyl ether 8 16 050 ug/l 752 109 80-115 9 15 <br /> Benzene 3 17 050 258 123 65-115 3 20 HL <br /> tert-Butyl alcohol 78 1 20 71 6 109 75-150 5 25 <br /> Di-isopropyl ether 927 050 7 56 123 75-125 3 15 <br /> 1,2-Dtbromoethane(EDB) 841 050 744 113 85-120 4 15 <br /> 1 2-Dtchloroethane 101 0 50 736 137 85-130 24 20 HL,BA <br /> Ethanol 44 1 100 70 8 62 70-135 164 35 IC HM BA <br /> Ethyl tert-butyl ether 8 88 0 50 752 118 75-130 10 25 <br /> Ethylbenzene 394 0 50 3 77 105 75-135 3 15 <br /> Methyl tert-butyl ether 408 0 50 351 116 65-125 32 20 RB <br /> Toluene 21 1 0 50 18 6 113 85-120 0 5 20 <br /> Anes(total) 204 0 50 206 99 85-125 3 20 <br /> the Range Organics(C4-C12) 261 50 220 119 60-140 6 25 <br /> Surrogate 12-Dichloroelhane-d4 266 250 106 60-135 <br /> Batch SL29003-EPA 5030B PIT/EPA 8260B <br /> Blank(5L29003-BLKI) Prepared&Analyzed 12/29/05 <br /> tert-Amyl methyl ether ND 0 50 ug/l <br /> i <br /> Benzene ND 0 50 " <br /> tert-Butyl alcohol ND 5 0 <br /> Di-isopropyl ether ND 0 50 " <br /> 1,2-Dtbromoethane(EDB) ND 050 " <br /> 12-Dtchloroethane ND 050 " <br /> Ethanol ND 100 " <br /> Ethyl tent-butyl ether ND 050 " <br /> Ethylbenzene ND 050 " <br /> Methyl tert-butyl ether ND 0 50 " <br /> Toluene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Gasoline Range Organics(C4-C12) ND 50 " <br /> Surrogate 1 2-Dtchloroethane-d4 4 73 500 95 60-135 <br /> uota Analytical- Morgan H111 The results to this report apply to the samples analy_ed 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 be reproduced in its entirety <br /> Page 11 of 19 <br />