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++� I9UO Bates Avenue a 5uit;9 LM + Concord, Cellfornia 94520 <br /> l (510) 686-9600 FAX (F6B6-9689 <br /> ,44RfR'�k�YnS AW`:N$.?f::�� �rj;xa:f ii'.S;?3k':C�'r:^x',:S'3:.'iw'�i$•'K<CQ:1•;}: h:}•i�3,i; "{:1;<,;:eu:v};y <br /> r :. s.'�.....: •....•.:�. :.....:�.,:_,.�`.,s��,.:;r• �" '�f.�.:.rsr r r Ys� r s i s ,r. r as � wl•tit�,,,kks4�x��X• ;Y�3{asK�a.�sg rr'a�iR <br /> :�...., a .;r,{ ::. .s.,. 5.,.k - lS,.. erya- ,, ...•:.:..� ...:.•......:?� :.:..,$#;�;ir?{ <br /> ,ETS Envlronmenial Assoclmwi Client Project lD: #vOfi7 <br /> + PO. Box 2242 <br /> Merced, CA 95344 t; <br /> i}Attention• Kevin Koehn QC Sample Group; 202-0962 p 1982 <br /> R�biy{l�3inx e 3 sR kk 4 t$Y§ n< f r R Qd Mar 17, C <br /> # t jirrr x ?'. karl>'"•: fQ(Yk1a yEan; N� <br /> QUALITY CONTROL DATA REPORT � <br /> ANALYTE Ethyl. <br /> Banzene Toluene Benzene X Ienea <br /> EPA EPA EPA EPA <br /> Method, 0015/80zo 8015/smo . 9015/13020 9015/13020 <br /> Anel st: K,E• K.N- <br /> Y / /J F <br /> KF. K.N.IJ.F, <br /> K.E./K,rd./J.F. KF./K.N./J.F.RQ 7rtlr � ,r1t8: m0/ A . <br /> rn®/KSI mg/Kg m9/K9 <br /> DaIg Analy7od: Fab 28, 1492 Fob 28, IM Feb 28, 1992 Feb 29, 1942 <br /> QC sample #: Matrlx Blank McOiN S1ank Matt+x 01enk MAlrix Blank <br /> r Sample Cance: N.D. 'N.D. N.p. N.D, <br /> i <br /> Spike Cone. <br /> Addsd: 0.40 0.40 0.40 1.2 <br /> Cone. Matrix <br /> '1 <br /> Spike: 0.29 0.32 0.37 r,1 <br /> Matrix Sp1ka <br /> % Rftnvery: 73 F3U 93 92 <br /> Conc. Matrix <br /> Spike Dup.: 0.28 U.31 0.35 1.0 <br /> Matrix Spike <br /> Duplicate <br /> * Recovery., 70 78 88 63 <br /> Relative <br /> * Difference: 3.5 3.2. 5.5 9.5 <br /> ;S;EIQI OrA ANALYTICAL %Recovery: Gane,of M.S.•Conc.of Sarn le x foci <br /> F pure Conc. Added <br /> Relative % Difference! Conc.Of M.S.•Conc•of M.S.D. x 100 <br /> OttC l9 0 COna.of M.S. 4 Cance of M.3.O.)/2 <br /> Project Manager zo20952.!EEE <a> <br /> 8 <br />