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Striker Avenue. Suite 8 <br /> Sequoia 819 Sacramento.CA 95834 <br /> 6) (916) 921-9600 <br /> Analytical FAX(916)921-0600 <br /> SECOR International Client Project 10 ARCO 434, Lodi, CA <br /> 9912 Business Park Dr., Ste. 100 Matrix Soil <br /> .Sacramento, CA 95827 <br /> Attention: Rusty Benkosky QC Sample Group: S906336 Reported: Jul 7, 1999 <br /> e <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Lead <br /> Method: EPA 6010 <br /> Analyst: J. Kelly <br /> Concentration <br /> Spiked: 50 mg/kg <br /> LCS Batch#: LCS070199 <br /> Date Prepared: 07101/99 <br /> Date Analyzed: 07/05199 <br /> Instrument I.D.#: MV-3 <br /> LCS % <br /> Recovery: 106 <br /> Control Limits: 80-120% <br /> ';m gggg: <br /> g'w n <br /> MS/MSD <br /> Batch #: 9062285 <br /> Date Prepared: 07/01/99 <br /> Date Analyzed: 07/05/99 <br /> Instrument I.D.#: MV-3 <br /> Matrix Spike <br /> % Recovery: 102 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 102 <br /> Relative % <br /> Difference: 0.0 <br /> Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> validation of sample batch results. Due to matrix effects,the QC limits for MSIMSD's are advisory only <br /> and are not used to accept or reject batch results. <br /> Sandra R. Hanson <br /> Project Manager/Sacramento Laboratory <br /> S906336.SES <2> <br /> Kg� <br />