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<br /> Sequoia 680 Chesapeake Dnve Redwood Gty CA 94� (415) 364 9600 FAX(415) 364-9233
<br /> 404 N Wiget Lane Walnut Creek CA 94 (510) 988 9600 FAX(510)988 9673
<br /> e:i) Analytical 819 Sinker Avenue suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100
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<br /> ,Smdh Environmental talent Project ID 15733,94-319 01-10
<br /> 1260 Graphics Drive MatrDL Liquid
<br /> Modesto, CA 95351-1502
<br /> ,Attention Jeanne Hornsey _ Work Order#
<br /> 9604568 r , -01-03 Repirmo.yr,tev?r'd�nOAp,xrc s 1a1,{1996`-
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<br /> QUALITY CONTROL DATA REPORT
<br /> Analyte' Hexavalent
<br /> Chromium
<br /> QC Batch#: IN040896719600A
<br /> Analy. Method: EPA 7196
<br /> Prep. Method: N/A
<br /> Analyst: D Lawrence
<br /> MS/MSD#: 9604s68o1
<br /> Sample Conc.: 00081
<br /> Prepared Date: 4/8/96
<br /> Analyzed Date. 4/8/96
<br /> Instrument I.D.#: Manual
<br /> Conc. Spiked: 0 50 mg/L
<br /> Result: 053
<br /> MS%Recovery- 104
<br /> Dup. Result: 062
<br /> MSD %Recov.: 102
<br /> RPD- 19
<br /> RPD Lund. 0.30
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<br /> LCS#: LCSO40896
<br /> Prepared Date: 4/8/96
<br /> Analyzed Date: 4/8/96
<br /> Instrument E.D.#: Manual
<br /> Conc.Spiked: 0 50 mg/L
<br /> LCS Result: 052
<br /> LCS% Recov: 104
<br /> 70.130
<br /> LCS 80-120
<br /> Control Limits
<br /> Please Note
<br /> The LCS is a control sample of known,interferent-free matnx that is analyzed using the same reagents,
<br /> 0001A ANALYT A preparation,and analytical methods employed for the samples The matnx spike is an aliquot of sample
<br /> fortrfied with known quantities of speafic compounds and subjected to the entire analytical procedure if
<br /> the recovery of analytes from the matnx spike does not fail within specified control limits due to matnx
<br /> i terference,the LCS recovery is to be used to validate the batch
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<br /> Project Manager "MS-Matnx Spike,MSD=MS Dupilcate,RPD-Relative%Difference 9604588 SSS <1>
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