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_ h <br /> SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX(916) 921-0100 <br /> ERM West Client Project ID: Safeway-Stockton <br /> 2001 P Street,Suite 200 <br /> -Sacramento,CA 95814 Reported: Nov 18, 1991 <br /> ;Attention: Shannon Sadler QG Sample Group 111-0063 <br /> QUALITY CONTROL DATA REPORT <br /> Ethyl- <br /> ANALYTE7cluene Benzene xylenes Diesel <br /> Benzene <br /> EPA <br /> Methrd: EPA 8020 EPA 8020 EPA 8020 EPA 8020 8015 Mod. <br /> Anuiyst: C.Chapman C.Chabman C.Chapman C.Cppbmu^ M.ppb s <br /> Reporting Units: Ppb pP <br /> Date Analyzed:QC Sample#: Nov 11110043H 1 Nov 1111004311 1 Nov 11110043H 1 11110043H 1 �BLK1111911 <br /> t <br /> N.D. tl.D. N.D. N.D. <br /> Sample Conc.: N.D. <br /> r:... <br /> Spike Cone. 100 100 200 600 <br /> -e Added. 100 - - <br /> Conc.Matrix 110 110 220 500 <br /> Spike: 100 <br /> Matrix Spike <br /> %Recovery: 100 110 ii0 110 83 <br /> - Cone.Matrix 110 110 220 430 <br /> Spike Dup.: 100 <br /> Matrix Spike <br /> Duplicate 100 110 110 220 72 <br /> %Recovery: <br /> Relative 0.0 0.0 0.0 14 <br /> %Difference: 0.0 <br /> %Recover Conc.of M.S. Cone.of Sample x 100 <br /> -" SEQUOIA ANALYTI AL y' $pike Conc.Added <br /> - - -- <br /> Relative%Difference: Conc.of M.S.-Conc.of M.S,D. x 100 <br /> c, Rick R.DllMalo (Conc.of M.S.+ Conc.of M.S.D.)!P 111t?062.ERS <6> <br /> I : <br /> Project Manager <br />