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V <br /> SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue - Suite LM - Concord, California 94520 <br /> (510) 686-9600 - FAX (510) 686-9689 <br /> . ...:..::::..................:::............:.........:.:......:::....:::.:....:..... <br /> AF'DS Services Clieni Projec .... <br /> ID: Unoca10788;8203 East 11th"Street,Tracy... <br /> 2401 Stanwell Dr., Ste. 400 <br /> Concord, CA 94520 <br /> Attention: Avo Avedessian QC Sample Group: 3120109-15 Reported: Dec 16, 1993:;:: <br /> QUALITY CONTROL DATA REPORT <br /> SURROGATE <br /> Method: EPA 8015 EPA 8015 EPA 8015 EPA 8015 EPA 8015 EPA 8015 EPA 8015 <br /> Analyst: K.Wimer K.Wimer K.Wimer K.Wimer K.Wimer K.Wimer K.Wimer <br /> Reporting Units: µg/L Ng/L Ng/L . ug/L Ng/L Ng/L pg/L <br /> j Date Analyzed: 12/8/93 12/8/93 12/8/93 12/8/93 12/8/93 12/8/93 12/8/93 <br />{' Sample#: 312-0109 312-0110 312-0111 312-0112 312-0113 312-0114 312-0115 <br />{ <br /> I <br /> Surrogate <br /> % Recovery: 100 90 95 97 98 99 92 <br /> i <br /> I <br /> i <br /> r <br /> 1 <br /> ff; <br /> SEQUOIA ANALYTICAL %Recovery: Cone.of M.S.-Conc.of Sample x 100 <br /> "\f Spike Conc.Added <br /> Relative%Difference: Conc.of M.S.-Conc.of M.S.D. x 100 <br /> Alan em (Conc.of M.S. + Conc,of M.S.D.)/2 <br /> I P lect Manager <br /> 3120109.MPD <6> <br /> s <br />