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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> . (415) 364-9600 • FAX(415) 364-9233 <br /> rn .Vs Hd �?a•+Na.c3�:}71 N rRSC'.y+s'N n t s;-r:' '<�f n' iy .r .. »„s kc" r c x '; y 3�Y yY y 3 �+e�..eersa� me.vcv o• .<uc:s r*�3S S$,f'!jO v &.,C`8o• S.,fida..`v'h`�v <br /> } `..".w '-` r' w 7P K ,iax�c+ms�t•.rym 4'3� S 'H'S �}�',�S.,wy...,.,."`"'!!.":v'. �: <br /> , fog ,`w,.`.,.,i�Ncu�,y,o.�,.x mak, v k•••• ta-x�ysc yap ,aw.,,. ;c.} ..S,^?`x�`,..o,}rv� Y; <br /> RESNA Client Project ID W0388,Reeves Exxonfrracy <br /> ;;1710 Main Street <br /> w Escalon, CA 95320 <br /> Attention Grey Stahl QC Sample Group 204-4326 Reported May 7, 1992 <br /> ry ti .ctv `y x Yr cA s v s.x ov} } ,t, �irrv' ,,.. s hx M ry s.at;,s >•{sf•' t"a;,ro n. Sc,o-}h x1 ..c sir ,. .. m�y�r xcly\ }+r+-„GrC".rv,.t <br /> Wwn,i�v v'ir v v nr� w qv{�`5i O”N 4G t.�ni�rvt.fnn A3�.as vry Jn���rv�h�4k}4v`v. vv�vi xJCv �L luN.hn{ n v� +l`.n O'.{Ls4v0.w4 v , O vx}rte.�*�rin.YiM.L v'ron f,4 wOeri�i5aW3�$'w 4T <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Zinc Arsenic Selenium Lead <br /> Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Analyst M htstry M Mistry M Mistry M Mistry <br /> Reporting Units mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed Apr 30, 1992 Apr 30, 1992 Apr 30, 1992 Apr 30, 1992 <br /> QC Sample# 204-4a52 204-4= 204-4W 204.4&92 <br /> Sample Conc: 44 14 N D 83 <br />�} Spike Cone. <br /> Added: 50 50 50 50 <br /> Conc. Matrix <br /> Spike: 94 63 41 58 <br /> Matrix Spike <br /> %Recovery: 100 98 82 99 <br /> Conc. Matrix <br /> Spike Dup.: 96 64 42 59 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 104 100 84 101 <br /> Relative <br /> % Difference: 21 16 24 17 <br /> SEQUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sample x 100 <br /> W v <br /> Spike Conc Added <br /> v`n Relative%Difference Conc of M S -Conc of M S D x 100 <br /> Fl.acLee (Conc of M S + Conc of M5D 2 <br /> anager 2044326 WAT <9> <br />