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Sequoia 819 arAvenue, 8 <br /> Sacramento. <br /> 958amento,CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> FAX(915192bs.com <br /> wwwsequoiala6s.com <br /> Delta Environmental Consultants Project: ARCO 5469,Stockton,CA Sampled: 615100 to 618/00 <br /> 3164 Gold Camp Drive,Ste,200 Project Number: NIA Received: 619/00 <br /> Rancho Cordova,CA 95670 Project Manager: Jay Johnson Reported: b/28100 <br /> 'rfi iu V+ Y F <br /> .� j _-•r t,� .- .� - ..Y S UE�'T°%Quaii�y control � �. ,tF �. <br /> Date Spike Sample QC Reporting Limit Reeov, RPD RPD <br /> Anal}rte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Blank(continued 0060149-BLKI <br /> Surrogate: a,a,a-Trifluorotoluene 6/14/00 0.200 0.234 mg/kg 60.0-140 117 <br /> LC-S 0060149-BSI <br /> Benzene 6/14/00 0.200 0.219 mg/kg 70.0-130 109 <br /> Toluene 0?00 0.220 70,0-130 110 <br /> E-thylbenzene „ 0.200 0.213 70.0-130 106 <br /> Xylenes(total) 11 0.600 0.585 70.0-130 97.5 <br /> Methyl Cert-butyl ether 0.200 0.217 70.0-130 108 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.237 60.0-140 118 <br /> Matrix Spike 0050149-MSI S006136-07 <br /> Benzene 6/14/00 0.200 ND 0.161 mg/kg 60,0-140 80.5 <br /> Toluene „ 0.200 ND 0.165 60.0-140 82-5 <br /> 13nzene 0.200 ND 0.161 " 60.0-140 80.5 <br /> X*-, (total} 0.600 ND 0.448 60.0-I40 74.7 <br /> Methyl Cert-butyl ether 0.200 ND 0.218 60.0-140 109 <br /> Surrogate: a,a,a-TriJluorotoluene 11 0.200 0.234 60.0-140 117 -- <br /> Matrix Spike Dun 0060149-MM M S006136-07 <br /> Benzene 6/14100 0.200 ND 0.I61 mg/kg 60.0-140 80.5 25.0 0 <br /> Toluene „ 0.200 ND 0.167 " 60.0-146 83.5 25.0 1 <br /> Ethylbenzene 0.200 ND 0.162 .20 <br /> 60.0-140 81.0 25.0 0..20 <br /> Xylenes(total) 0.600 ND 0.454 60.0-140 75.7 25.0 1.33 <br /> Methyl tent-butyl ether 0.200 ND 0.201 60.0-I40 5. 25.0 7.62 <br /> Su,rogate: a,a,a-TrOuorotoluene 0.200 0.218 60.0-140 109 <br /> Batch: 0060151 hate Pre ared: 6115100 Extraction Method: EPA 5030B (11MeOH) <br /> Blank 0060151-BLKI <br /> Purgeable Hydrocarbons 6115100 ND mg/kg 1.00 <br /> Benzene 1. <br /> Nb 0.00500 <br /> Toluene „ <br /> Ethylbenzene NNDD 0.00500 xylenes{fatal} 0.00500 <br /> „ N7D 0.00500 <br /> vrethyl tert-butyl ether ND 0.0500 <br /> iurrogate: a,a,a-Trifluorotoluene 0.200 0.183 60.0-140 91.5 -� <br /> LCS fl060151-1351 <br /> 3enzene 6115100 0.200 0,181 mg/kg 70.0-130 90.5 <br /> Toluene 0.200 <br /> �thylbenzene 0'188 " 7Q0-130 94.0 <br /> 0.200 0.188 70,0-130 94.0 <br /> ty (total} " �1,600 <br /> 0.52$ 70.0-130 88.0 <br /> equoia Analytical-Sacramento *Refer to end of report for text ofnotes and defnitiarrs. <br /> Page 18 of 25 <br />