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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 1 404 N.1Nlget Lane Wainut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> t ....... <br /> ATC Associates, Inc. Client Project ID: Stockton Smith 62574.0002 <br /> =1260 Graphics Drive Matrix: Liquid <br /> :""Modesto, CA 9535 1-1 502 <br /> Attention <br /> y <br /> Jeanne Homse Work Order#: 9810767 01, 02 Reported: Oct 29 1998; <br /> .. ::.t.:.::.::.::.:::.:::.:: <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Diesel <br /> Analy. Method: EPA 815 Mod, <br /> Prep. Method: <br /> Analyst: N.Zahedi <br /> MS/MSD#: 981047103 <br /> Prepared Date: 10/12/98 <br /> Analyzed Date: 10/16/98 <br /> Instrument I.D.#: HP2 <br /> Conc.Spiked: 500,ug/L <br /> MS %Recovery: 61 <br /> MSD% Recov,: 54 <br /> RPD: 12 <br /> :..:., ......... <br /> LCS #: LCS101298 <br /> Prepared Date: 10/12/98 <br /> Analyzed Date: 10/16/98 <br /> Instrument I.D.#: HP2 <br /> LCS %Recov.: 66 <br /> 24-129 <br /> LCS 50-117 <br /> Control Limits <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 matrix spike is an aliquot of sample <br /> >ELAP #2000 fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch. <br /> ;Ka Imy 'ect M er **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9810767.AAA <1> <br />