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Sequoia �„ 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> FAX(916)92 i-0100 <br /> EMCON-Sac <br /> Project: ARCO 2186,Stockton,CA Sampled: 6117/99 <br /> 1433 N.Market Blvd. Project Number: NIA Received: 6117/99 <br /> Sacramento,CA 95834 Project Manager: Dave Foley Reported: 6130/99 <br /> t Total Metals byaEVA,4 0170008 16s Method's"IQiiality'Control <br /> sSCYqpO! <br /> a Analytical Sacramento �,: <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed .Level Result Result Units ' Recov.Limits % Limit % Notes] <br /> BAICh: 9060290 Dat�Prepared: 6/21/99 FalEactiQn MethQd: EPA 3050H <br /> Blank 9060290.- ,tti <br /> Lead <br /> 6/22/99 <br /> ND mg/]cg 2.50 <br /> 11cS 9060290-13 S 1 <br /> Lead 6/22199 50.0 48.9 mg/kg 80.0-120 97.8 <br /> Matrix Spike J 9.060290- S7?1 5906308-06 <br /> Lead 6/22/99 50.0 12.2 52.2 mg/kg 80.0-120 80.0 p <br /> MAtrIxSnike Dun 9 6[) 0290_ 4I11 S906308-06 <br /> Lead 6/22/99 50.0 12.2 53.6 mg/kg 80.0-120 82.8 20.0 3,44 D <br /> I <br /> I <br /> Sequoia Analytical-Sacramento *Refer to end of r-epori for text ofnotes and definitions. <br /> Page 3 of 4 <br />