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� , I <br /> r <br /> 1 <br /> 885 Jarvis Drive <br /> 5037 <br /> (408)776 9600 <br /> Sequoia Morgan Hit] CA 95037 <br /> Analytical FAX r <br /> (448}782 5308 <br /> www sequwalabs com. <br /> e <br /> n <br /> Secor-Rancho Cordova(ARCO) Project ARCO#0595,Stockton,CA MNA0270 <br /> 3017 Kilgore Rd Suite 100 Project Number 38983 - - - L Reported -. <br /> Rancho Cuidova CA,95670 Project Manager Rusty Benkogky 101126/04'14 13 <br /> - ----- —_-- Volatde'Organlc 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 />— r <br /> Batch 4A19002-EPA 5030B PIT <br /> Blank(4A19002-BLK1) Prepared 01/19/04 Analyzed 01/20/04 <br /> Ethanol ND 100 ugll <br /> tert-Butyl alcohol ND 20 " <br /> Methyl tent-butyl ether ND 050 t <br /> " <br /> De-isopropyl ether ND 0 50 ' <br /> Ethyl tert-butyl ether ND 0 50 " <br /> tent-Amyl methyl ether , MND 4 0 50 " <br /> 1 ' 4 F <br /> 1,2-Dechloroethane ND a 050 " <br />__-t-__..__—_1,2-Dibrotnoeth_an_e(EDB)- ND �0 50 <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 <br /> Ethylbenzene _ - - ND4__ 0 50 <br /> Xylenes(total) SND <br /> Gasoline Range Organics ND 50 <br /> Surrogate 1 2-Dechloroethane-d4 542 5 00 108' 78-129 <br /> Laboratory Control Sample(4A19002-BSI) Prepared 01/19/04 Anal ed 01/20/04 <br /> Ethanol 188 100 ug/l 200 940, 31-143 <br /> tert-Butyl alcohol =—� `49=1 ===20 <br /> Methyl tert-butyl ether 997 0 50 10 0 99 7 63-137 <br /> De-isopropyl ether - — - --- __to 1_-'--0 5o -- ----10 0�-- -101—- 76-130 - <br /> Ethyltert-butylether 11 0 0 50 10 0 110 81-121 <br /> tert-Amyl methyl ether 108 0 50 10 0 108 82-140 <br /> 1,2-Dechloroethane 11 4 050 100 114 77-136 <br /> 1,2-Debromoethane(EDB) 10 8 0 50 100 108 77-132 <br /> Benzene 10 1 0 50 10 0 to] 69-124 <br /> Toluene 10 2 0 50 10 0 102 78-129 <br /> Ethylbenzene 997 0 50 10 0 997 84-132 <br /> Xylenes(total) 31 7 050 30 0 106 83-137 <br /> Surrogate 1 2-Dechloroethane-d4 m 5 63 - - 500 '113 7S-129-- <br /> Sequoia <br /> 8-129--Sequoia Analytical-Morgan Hell The results to this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 10 of 18 <br />