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P F ii � r I1 <br /> SII I <br /> SEQUOIA AN,�, ALYT'ICAL <br /> 680 Chesapeake Drive • Rec&ood City, CA 94063 <br /> �r (418) 364.9600� - FAX(415).364.9233 <br /> e <br /> .t�a?r <br /> R�SNA Client Project 1D: VIf9388, Reeves Exxon <br /> i <br /> 11710 Main Street <br /> Esealon, CA 96320 <br /> !Attention Grp�Stahl I CC Sample Grou 208-071 4 Rafortett Aug 12, 1� <br /> S '+17 ', w '��.a;'%ni,i� ars�.Sa..�w�'�,rx•� <br /> :swrt,�{�F` '.`.r��"iJ%y.�'�r.x�X°�,M1 1v VD:4'Ml .� � ,;i?FSv7i;�a R'u ssrw'�r�I'��5>�Nr�,3'/f�h n;��.:b:G..?.'�s6K.'..n...:s a�C•��ic .. wm� .. ' <br /> 1p r <br /> QUALITY CONTROL DATA REPORT <br /> Ethyl. <br /> Benzene ',� Toluelne benzene ane% <br /> Method: EPA 8024 EPA 8020 EPA 8020 EPA a020 <br /> Analyst: R.Gockler' R.Geckler R.Geck:pr R.Geckief <br /> Reporting Units: mg/kg mg/kg Mq/kg m9/ks <br /> Date Analyzed: Aug 7, 1992 Aag 7, ,j7902 Aug 7, 1992 Aug 7. 1A2 <br /> CSC Sarnple ! : GBLKOW792 GELKdB{M GSLK080792 GBLK080792 <br /> Sample Conc.. N.D. N.D. N.D. N.D. <br /> Spike Corin. 1 <br /> 1 <br /> Added: 0.20 0,20 0.20 0.60 <br /> Conc. Matrix Ni <br /> Spike: 0118 ;I O.t9 0.18 0.53 <br /> a <br /> Matrix Spike <br /> % Recovery: 90 95 90 88 <br /> i Conc. Matrix <br /> Spike Dup.: 0.19 0.20 0.19 0.57 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 95 '� 100 95 95 <br /> Relative <br /> % Difference; 5.4 5.1 5.4 7.3 <br /> F <br /> SEQUOIA ANALYTICAL I Z Reco++ery-:,p Cane,a1 KS,•Conc of Sample x 100 <br /> Spike Conc Aoasd <br /> I <br /> Q k R4lali�o%Difference! Cane,of M,S.-Cone.of M.S.D. x 1Q0 <br /> ri L S '!': (Cone,of M.S. + Conc,of M.S.D.4 2 <br /> roject Manager E 2OW71 SHAT <2> <br /> .d [ J,JdSE: :t ?h, GT F-'jnd <br />