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- i <br /> + r <br /> t <br /> 1 i <br /> RECEIVED MAY 3 <br /> SEQUOIALT L <br /> 680 Chesapeake Drive • Redwood City,CA 940633 <br /> ' (415)364-9600 • FAX(415)364-9233 <br /> Icy <br /> .,. ...>'....,,.'&.«: �. :�..... <br /> �" Cifent Project ID.beeves Exxon.388 <br /> z.Waterwork <br /> t 1710 Main Street <br /> �Escalon CA 95320 Reported Matt 1991 <br /> w Attention Sill Channell OC Sample Grcup 104-2984 . w ; <br /> x: 1 � 3 k�:v Vw,*:-'; a..caa>�mnY;3ar3tN:w'o7su t,.••;. .,i;.+,;>.,>w.�xk:.-�..... v. �:� <br /> QUALITY CONTROL DATA REPORT <br /> i- <br /> ftyl <br /> rANAt_YTI~ <br /> i 9enzene Toluene Benzene X saes <br /> Method: EPA SMO EPA 8020 EPA$= EPA 8020 <br /> Analyst: S.Hoffmann S.Hoffmann S.Hoffmann S.Hoffmann <br /> Reporting Units: ng ng ng n4 <br /> Date Analyzed: Apr 18. 1991 Apr 18, 19S1 Apr 18, 1991 Apr 18, 1991 <br /> QC Sample GBLK041991 GBLK04MI OBLK041891 GBUK041891 <br /> tea - <br /> io Sample Conc: N.D. N.D. N.D. N.D. <br /> a� Spike Conc. 100 100 300 <br /> Added: 100 <br /> s- Conc.Matrix <br /> Spike: 100 160 100 300 <br /> rN Matrix Spike 100 100 i00 <br /> %Recovery: 100 <br /> Cane.Matrix <br /> Spike Dup.: 100 100 100 300 <br /> Matrix Spike <br /> Duplicate <br /> v %Recovery: 100 100 100 100 <br /> -- ive <br /> - =- Difference: --- 0.0 0 0 ----0.0 -- 0.0 <br /> .6 <br /> --- e <br /> SEbUDEA ANALY71CAt. 9t Recovery Conn.of M.S. 00 <br /> .Conc.of Sample r 1 <br /> o, Spike Conc.Added <br /> TTT Relative 76 Difference. Conc.of M.S. Conc.at M.S Q. i 100 <br /> }' a eth . ac I (Cone.of M.S.+Conc.or M.S.D.) 2 1042§".WAT e9> <br /> oJect Manager <br />