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j SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> 4D lqr <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> '"vri+J'airM'v�4$��MGnl''Fti P YR L.viv v.0+rvSU rNaG lry i . fir$ �v'� vN ♦ hHv v J~v r ] ry v6s vV S n v ] hA[w+rJ+.r vn:..'.�+..v vv rl Sv Y <br /> IYV~ Xk x,r.#.:p,,,p,?i„ry�i14 + • .'.r i v.�a.rs v YYi.iC+.lk2v.wt2.hli2 � ^Rr 2 v J..n fiw` <br /> RESNA Industries w Client Project ID Arco#2168, Stockton <br /> 3164 Gold Camp Dr, Sude 200 <br /> Rancho Cordova, CA 95670 <br /> Attention Eloise Cherven QC Sample Group 205-0148 Reported May 12, 1992 <br /> tivry i. O <br /> v u v 1 r <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Lead <br /> Method EPA 6010 <br /> Analyst S Foster <br /> Reporting Units mg/kg <br /> Date Analyzed May 12, 1992 <br /> QC Sample# 205-0197 <br /> Sample Conc: 64 <br /> Spike Conc. <br /> Added: 50 <br /> Conc. Matrix <br /> Spike. 52 <br /> Matrix Spike <br /> %Recovery- 91 <br /> Conc.Matrix <br /> Spike Dup 52 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery- 91 <br /> Relative <br /> %Difference: 00 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> • SEQUOIA ANALYTICA %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> Relative 96 Difference Conc of M S -Conc of M S D x 100 <br /> Michael R Giles (cone of M S + Conc of M S D) 2 <br /> Laboratory Director <br /> 2050148 RES <5> <br />