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a <br /> ` SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 i <br /> (415) 364-9600 FAX(415) 364-9233 - <br /> 1 vs s�i,m.mr VNs-{tea} tiYty �•1�2F/a+su K rrs �s 6s5'ti�- }s 0!{��v$'s Sv,es`s+r�'isJV q�xsCrri Vxy"N+�n��hn��tiy�avt ntwvtiss <br /> waterwork Cie"Jnt F'r6.:e-c`'4!DW6a56o4'.,.`.�D,a ia�..`4.m��t*on<dx:xWawlNnu,u..¢t£, <br /> wa�Y.... .. J,`- �....�r..,w`. �ro�,d,;.u�cwi„t•,�,,,...z,a. <br /> ' {-,1710 Main Street <br /> "Escalon, CA 95320 <br /> ,-Attention Bill_Channell OC Sample Group 112-3105-10 Rep/orted. Jan 8, 1992 <br /> C.4,•F ,.{ S'+M'ry, ""+rp f}yA p} %{+.tt"W.[{:�10{•."s.',"}Yi gYY+'�ctn'sM+rv�^��wp.:k-y.�r <br /> H}c^�.a�r rJ�.'t-..,,,..,y.A..,o'^��s ✓zd s*!"'y"�2}ix`v�vi`'�p Ss 14.G�`nyy u'vuY i� }vM0 M � J <br /> now w---, <br /> "',A xay^"�t�;�'� w�:.c � c"'"` �vn awra`'�.,;�ieua>:�„'.e••):,r,r e�"".,.wta��vno;rwcahq E�..rx `SRPIc„G3wa:,�:.vw.%.4 k,rxK4�.wo,,f cw:wfowf�am�#,�`,.rcgix.:,4;.;.,.:.wa.�.a•-� <br /> [QUALITY CONTROL DATA REPORT <br /> ' f <br /> ANALYTE Hexavalent Ethylene <br /> ' Chromium Chrorsuum GiycoE <br /> Method EPA 200 7 EPA 7196 S A. <br /> Analyst R.Sharma v Ankaths L Haar <br /> Reporting Units mg/L m9/L mg/L <br /> Date Analyzed Dec 30, 1991 Dec 19, 1991 Jan 7, 1992 <br /> QC Sample# 112-3516 112-3110 BLK010792 <br /> Sample Conc.: N D N D N D <br /> Spike Conc. <br /> Added- 50 050 100 <br /> Conc. Matrix <br /> Spike: 47 053 110 <br /> Matrix Spike <br /> %Recovery: 94 106 110 <br /> ' Conc. Matrix <br /> Spike Dup : 48 054 100 <br /> Matrix Spike <br /> ' Duplicate <br /> % Recovery- 96 108 100 <br /> Relative <br /> % Difference 21 19 95 <br /> SEQUOIA ANALYTICAL. %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> po'le � Reiatrve%Ohfference Conc of M S -Cone of M S D x 100 <br /> ct� <br /> ee (Conc of M S + Conc of M S O 2 <br /> Manager 1123105 WAT <a> <br />