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Sequoia 680 Chesapeake Drive Redwood GM CA 94063 (415) 364-9600 FAX(415)364-9231 <br /> 404 N.Wiget Lane Walnut Creck,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacrarnmto,CA 95834 (916) 921.9600 FAX(916)921-0 100 <br /> ........... ........ n' <br /> ICleirifelder oW <br /> efitPrj Protect 20-3978-01. 35 <br /> 2825 East Myrtle St. Matrix: Sol[/Water <br /> Stockton, CA 95205 <br /> Attention Tony Martin QC Sample Group: 7090429A-31A Reported: Sep 25, 1997,,.... <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Methanol Methanol <br /> Method: ISMS ISHS <br /> Analyst: T.Tran T.Tran <br /> Concentration <br /> Spiked: 8.0 mg/L 8.0 mg/kg <br /> LCS Batch#: LCS092397B LCS092397A <br /> Date Prepared: 09/23/97 09/23/97 <br /> Date Analyzed: 09/23/97 09/23/97 <br /> Instrument I.D.#: GCV-01 GCV-01 <br /> LCS % <br /> Recovery: 104 104 <br /> Control Limits: 50-150 54150 <br /> MS/MSD <br /> Batch#: 9709777-03 9709G73-01 <br /> Date Prepared: 09/22/97 09/23/97 <br /> Date Analyzed: 09/22/97 09/23/97 <br /> Instrument I.D.#: GCV-01 GCV-01 <br /> Matrix Spike <br /> %Recovery: 100 150 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 100 150 <br /> Relative % <br /> Difference: 0.0 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 /> /'EQU IA ANA YT CA 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 reject batch results. <br /> a KC. Schne de,Vr ' <br /> reject <br /> eject Manager/Sacramento Laboratory <br /> 7090429XKLF <4> <br />