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Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> Analytical <br /> (916)9z1-9606 <br /> FAX(916)9zt-6100 <br /> vwvwsequoiaiabs.com <br /> Delta Environmental Consultants Project: ARCO 5469, Stockton,CA <br /> 3164 Gold Camp Drive,Ste.200 Project Number: NIA Sampled: 615/00 to 6!8100 <br /> Rancho Cordova, CA 95670 Pro'ect Manager: Jay Johnson Received: 619/00 <br /> Re otted: /00 <br /> �,x � � - n -��ydrucarbonsr;(C6 C12),BTE�anc���1'fTB "bye <br /> Analyte Date Spike Sample <br /> Anal zed QC Reporting Limit Recov. RPD RPD <br /> Y Level Result Result Units Recov.Limits % Limit % Notes* <br /> LCS continued <br /> L060151-BSI <br /> Methyl Cert-butyl ether 6/15/00/00 0.200 <br /> Surrogate: a,a,a-Tr�uorotoluene 0200 0.165 mg/kg 70.0-I30 82.5 <br /> 0.190 60.0-140 95.0 <br /> Matrix S ike 0060151-MSI S006I35-0g <br /> Benzene 6/15/00 0.200 Toluene 0.200 ND 0.162 mg/kg 60.0-140 81.0 <br /> Ethylbenzene 0.200 ND 0.17ND 0.170 60.0-140 80.5 <br /> 0.600 ND 0.471 <br /> Xylenes(total) 1 60.0-140 85.0 <br /> 60.0-I40 78.5 <br /> Methyl tent-butyl ether 0200 ND <br /> Surrogate: a,a,a-Tri uarotoluene 0'144 " 60.0-140 72.0 <br /> � O.Z00 0.195 " <br /> 60.0-140 97.5 <br /> Matrix Spike Dup 006011-AISDI 5006_136_08 <br /> Benzene 6/15/00 0.2.00 <br /> T e N 0.200 ND 0,164 mg/kg 60A-140 82.0 25.0 1.23 <br /> E m7ene ND 0.170 60.0-140 85.0 25.0 5.44 <br /> Xylenes(total) <br /> 0.200 ND 0.172 60.0-140 86.0 25.0 1.17 <br /> 0.600 <br /> Methyl tert-butyl ether ND 0.494 60.0-140 82.3 25.0 4.73 <br /> 0.200 ND 0.147 60.0-140 73.5 25.0 2.06 <br /> Surrogate: a,a,a-Trifluorotoluene " 0.200 <br /> 0.197 60.0-140 98.5 -'�"`-'-- <br /> Batch: 0060157 Date P__renared: 6/15!00 <br /> Blank _ Extraction Methnd: EPA 50308(iVieO <br /> 00601_ 57_SLIt1 <br /> Purgmble Hydrocarbons 6%15/00 <br /> Benzene ND mg/kg 1.00 <br /> Toluene ND 0.00500 <br /> Ethylbenzene ND " 0.00500 <br /> Xylenes(total) ND 0.00500 <br /> Methyl tert-butyl ether ND 0.00500 <br /> ND <br /> Surrogate: a,a,a-Truarotoluene 0.200 0.0500 <br /> 0.231 60.0-140 116 <br /> LCS 0060157-SSI <br /> Benzene 6/16/00 0.200 <br /> Toluene 0.192 mg/kg 70.0-130 96.0 <br /> 6/15/00 0.200 0.195 <br /> Bthylb 0.200 0.189 70.0-130 97.5 <br /> Xyleness(total) " 0.600 70.0-130 94.5 <br /> *!ethyl tert-butyl ether „ 0.543 0.200 70.0-130 9D.5 <br /> surrogate: a,a,a-Tr�uor0.206 70.0-130 103 <br /> otoluene 0200 <br /> 0.229 -" --370.0-140 114 -`-'�- <br /> ►'iatrix Spike 0060157-NISI 5006174-02 <br /> 3enzene 6115/00 0.200 <br /> `oluene ND 0.141 mg/kg 60.0-140 70.5 <br /> ith zene „ 0.200 ND 0,153 " <br /> 0.200 ND 60.0-140 76.5 <br /> 0.155 60.0-140 77.5 <br /> equoia Analytical-Sacramento <br /> *Refer to end of report for text of notes and definitions. <br /> i <br /> `i <br /> ,i <br /> Page 19 of 25 <br />