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f <br /> r + r <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 903 (415) 364-9600 FAX(415) 364.9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510) 988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921.0100 <br /> bel-TechCl -ient Project D: Sinclair Trucking" <br /> 10624 Olive Ave. Matrix: Soil <br /> Oakdale, CA 95361 <br /> Attention: Don Light OC Sample Group: 506-1226 Reported: Jun 27, 1995 <br /> ... <br /> QUALITY CONTROL DATA REPORT <br /> ' ANALYTE <br /> Lead <br /> Method: EPA 6010 <br /> Analyst: K. Barta <br /> Concentration <br /> Spiked: 50 mg/kg <br /> ' LCS Batch#: LCS062495 <br /> Date Prepared: 6/24/95 <br /> Date Analyzed: 6/27/95 <br /> Instrument I.D.#: P-40 <br /> LCS % <br /> b Recovery: 94 <br /> Control Limits: 80-120 <br /> :.,.:. <br />' MS/MSD <br /> Batch #: 5061240 <br /> Date Prepared: 6/24/95 <br />' Date Analyzed: 6/27/95 <br /> Instrument I.D.#: P-40 <br /> Matrix Spike <br /> % Recovery: 90 <br /> Matrix Spike <br /> Duplicate% <br />' Recovery: 90 <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 MS/MSD's are advisory only <br /> and are not used to accept or resect batch results. <br /> Janet tan <br /> Project Manager <br /> I5061223.DDD <2> <br /> M <br />