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�- SEQUOIA ANALYTICAL <br /> .� 680 Chesapeake Drive • Redwood Co.CA 94083 <br /> (4157 384-9600 - FAX(415),364-8233 <br /> MM 11010,1311,0111l Illilsollellion <br /> LAttentlon <br /> D Main Street <br /> lon,CA 95320 Tina!#! QC* e Gfol 1050430-0432 <br /> Repqned 20, 1991 <br /> QUALITY CONTROL DATA REPORT <br /> Ed+vl- <br /> """ Bsasene Tokmw scram <br /> EPA EPA EPA EPA <br /> Method sots/8020 8015/0= 8015/sm 8015/8= <br /> Artaf}'et. J Fw t cM J Fontscha J Fomscha J Fmtecha <br /> Raporting(!nits. mg/kg moAg mg/kg mg,'kg <br /> Date Anal may 12, 1991 May 12, 1981 May 12, 1091 May 12, 1991 <br /> �. QC Sample fi< 105.0004 1050004 105-M 1054M <br /> , n <br /> Sample Cone.- N D N D N D N D <br /> Spike Cone. <br /> Added. 040 040 040 1.2 <br /> • Conc Matrix <br /> -� Spike- 044 040 040 11 <br /> Matrix Spike <br /> %Recovery: 1t0 100 100 92 <br /> Conc Matrix <br /> Spike Dup- 046 036 026 11 <br /> Matrix Spike <br /> Duplicate <br /> a, %Recovery: 120 90 6s 92 <br /> r <br /> Relative <br /> %Difference: 44 10 42 00 <br /> l + <br /> r�SE FOIA ANAt.YTI %Fboovery nc.of M s- m a Sample X100 <br /> aa <br /> ke AddAdamRall%Oderence Conn of Ks-C M of K&D n too <br /> of M + of M D 7 <br /> oJeat Manager 1060430 WAT c2a <br />