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i <br /> SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> i (916) 921-9g6.y0gu0 • FAX (916)) 921-0100 <br /> � 4 1 :..� .v uFi'rp�i 44b•�"�cn..'ivY��vry�nrvry v. t vr. ✓ r� t1 ,. J.n >rt s r•IMrrvcMn.n.v.wC.tS';^�wt+,�c,, ,.h'rrmy"., <br /> RESNA Industries n, Client Project ID i3wm-s,Arco,79W N 'o Dorado,Stodmn~ Y <br /> 3164 Gold Camp Dr, Suite 200 <br /> Rancho Cordova, CA 95670 <br /> Attention Matthew Taylor OC Sample Group 2100306-12 _ Reported Oct 19, 1992 <br /> 7SKSCJi' $r,2/nn:LSL .}. 12\.� 3v o rv�ni 9;ansc,.dc..F. x .., ,;..e�, > A s. ,., G:v '?.`,C.r N;,`�r.N;s 4,....�, ';'t� ..<.f <br /> QUALITY CONTROL DATA REPORT <br /> l ANALYTE <br /> Benzene Toluene Ethylbenzene Xylenes <br /> Method EPA 602 EPA 602 EPA 602 EPA 602 <br /> Analyst Chiaravalloti Chiaravalioti Chraravallotr Chiaravailoti <br /> Reporting Units erg/L pg/L jjg/L Ng/L <br /> i Date Analyzed Oct 16, 1992 Oct 16, 1992 Oct 16, 1992 Oct 16, 1992 <br /> QC Sample# BLK101692 BLK101692 BLK101692 BLK101692 <br /> Sample Conc.: N D N D N D N D <br /> Spike Conc. <br /> Added: 10 10 10 20 <br /> Conc. Matrix <br /> Spike: 83 86 83 16 <br /> Matrix Spike <br /> % Recovery: 83 86 83 80 <br /> Conc. Matrix <br /> Spike Dup.: 88 92 91 17 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 88 92 91 85 <br /> Relative <br /> % Difference: 58 67 92 61 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> iSEQUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> SIG"u" <br /> Relative%Difference Conc of M S -Conc of M S D x 100 <br /> Michael R Giles {Conc of M S + Conc of M S D) 2 <br /> Laboratory Director <br /> 2100306 RES <4> <br />