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SEQUOIA P ALYTICA►L <br /> 1900 Bates Avenue • Suit • Concord, CRlifornia'94520 <br /> (510) 686-9600 FAX (510) (186-9689 C f <br /> E i,T$$ <br /> r„<Ewn..v.$.i'.r�.o�.Y.n.m�e-,ntf a�l.Associates Client <br /> �.Pn rojecD. <br /> ..a#.{0.;0�5'r 7 <br /> P. 0. Sox 2242 <br /> Merced, CA 95344 <br /> httention: 'Kevin Koehn QC Sample Group: 202-0962 Reported: Mar 17, 1992 <br /> e <br /> .,-.,..:f..- .-..r..,.0,:51.rr.:�.�..::.:.:...?i�L�l•.r��d`...:-r,5 :.! ::.'�.�;,.r���:..>,.- ...>..::: .- �r. Y,_';:+^..... ..-.k:! ... -.... ........... �.......t....-, ....�....._- ..,�.�r_._-.�...��2� -f-... I. <br /> f r <br /> I <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Cadmium chromiurlr Lead Nickel Zinc <br /> Method: EIA 7130 PFA 7191 EPA 7421 EPA 75n EPA TASo <br /> Analyst: K.Anderson K.Andsreon K.Ander94n K.Anderson K.Anderoon <br /> Reporting Units: MQ/KA mg/Kg mg/4 rng/Kg mg/Kg <br /> Dale Analyzed: Mar 13, 1992 Mar 11, 1992 Mar 13, 1992 Mar 13, 1P92 Meir its, 1992 <br /> OC SOmple W: 202-0952 202-0952 202-0952 202.0962 202.0902 <br /> t <br /> Sampiv Conc.: 0.90 5.n 170 10 78 <br /> r <br /> Spike Cone. <br /> Added: 50 50 50 60 50 <br /> w <br /> Cone, Metrix <br /> Spike: 52 60 21u 65 120 <br /> , <br /> Matrix Splk• <br /> % Recovery. 102 102 8u 110 94 <br />`F <br /> i <br /> Y <br /> Cone. Matrix <br /> Spike Dup.: 52 52 210 54 140 <br /> f Matrix Spika <br /> Duplicate <br /> % Recovery: 102 86 60 88 124 <br /> i <br /> Rela11vr3 <br /> % Difference: 0.0 14 0.0 18 15 <br /> SEQ OIA ANALYTICAL it riecovery: Conc.of M.S.•Cone of Sample x 104 <br /> Spike uric. Added <br /> s, Relaflve ' Dilrarence: Caro,of M.S.-Conc.of M.S.O. x 100 <br /> nit A. C Ie o (Conc.of 5.9. + Canc.of M.3.0. 2 <br /> f'ro�pot Manager 20P0962.5F.E rfsy <br />