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MONO <br /> �. <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City,CA 94063 <br /> (415)364-9600 FAX(415):364-9233 <br /> ....- .w�wr �!:G'YL".."^=L✓FNGak:Yi;%,'-�.:.a _�S ,.../.a.rw.w......nwr..,...acw�'h.;:n:.....ww»�.w.v„�zU"s.T:�X�.__....u.:i- <br /> Waterwork Client Project ID: Ecktto[m <br /> 1710 Maln Street <br /> " Escalon,CA-95320 R ed <br /> rAttentlon: Bill Channall CC Sample Group. 104-,3733 eport M ay 6 1991 c; <br /> .. .,,. ..,.�._..:,n?""'=j"'X"•..G.�."w'aaos'."�»`:wwG,lr. ....c`�'. �"""�w��,.r-.L+,is��.wwcs�kaF.x '.LWT.'.�-�....c.w..rw��:.-�...c.,..:`.:.Ki'::P.�.....:..:�w.'�v..w..;.;r;:�u.:%:a,,.r�i`.r4.a.i.�r.:'vrR.��.c...a.w,..,....,...fu.:: <br /> QUALITY CONTROL C.="'4 REPORT <br /> ANALYTE <br /> Lead Cadmium Chromium Znc Dr anis Lead <br /> Method: EPA7421 EPA6010 EPA 6010 EPA 6010 WFr <br /> Analyst: V.Prdei S.Foster S.Foster S.Foster V.Patel <br /> Reporting Units: mglkg mg/kg mg/kg mg/kg -g/kg <br /> Date Analyzed: May 5, 1991 May 3, 1991 May 3. 1991 May 3, 1991 May 2. 1991 <br /> QC Sample#: 104 2.48 1043085 1N-3 1043aas Matrix <br /> Sample Conc.: 5.0 6.1 240 200 N.D_ <br /> Spike Cone. <br /> Added: 50 250 250 250 0.25 <br /> Conc.Matrix <br /> Spike: 45 270 530 510 0.23 <br /> Matrix Spike <br /> %Recovery: lid 110 120 120 92 <br /> Conc.Matrix <br /> Spike Dup.: 47 260 510 510 0.20 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 64 100 110 120 80 <br /> Relative <br /> %Difference: 4.3 3.8 3.8 0.0 14 <br /> Y 'E000tA ANALYTICAL %... : Cori.01 M.S.-Cans.a1 Sample X100 <br /> Spike Conc.Added <br /> Fietadtw%pFftntrwr Carrs-ar M.S.-Caro,c1 M.S.D. x 100 <br /> - th .Fla (Conc.of M.S.+Conc.ar M.S.b.) 2 <br /> ofed Manager to43731.wAT <m> <br />