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--------------------------- <br /> Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N,Wigct 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 /> Iwo <br /> .,......:......:�: . <br /> ATC Client Project ID 18742,62574.0002 <br /> ::1260 Graphics Drive Matrix: Liquid = <br /> Medesto, CA 95351 1502 <br /> "-.Attention: Jeanne Hornsey Work Order#: 9801575 01-06 Reported: Jan 21, 1998;;- <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Diesel <br /> QC Batch#: GC0115980HBPEXC <br /> Analy. Method: EPA S015M <br /> Prep. Method: EPA3510 <br /> Analyst: D.Lockhart <br /> MS/MSD #: 980157501 <br /> Sample Cone.: N.D. <br /> Prepared Date: 1/15/98 <br /> Analyzed Date: 1/16/98 <br /> Instrument I.D.#: GCHP4A <br /> Cone. Spiked: 1000 ug/L <br /> Result: 750 <br /> -....,-.MS %Recovery: 75 <br /> E <br /> Dup. Result: 4.0 <br /> MSD % Recov.: 0.40 <br /> RPD: 198 <br /> RPD Limit: 0-50 <br /> LCS#: LCS011598 <br /> Prepared Date: 1/15/98 <br /> Analyzed Date: 1/16/98 <br /> Instrument I.D.#: GCHP4A <br /> Cone. Spiked: 1000 u9/L <br /> LCS Result: 770 <br /> LCS % Recov.: 77 <br /> 50-150 <br /> LCS 60-140 <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 /> J (1 fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br /> Jthe 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 /> Sheila Flynn <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate, RPL)=Relative% Difference 9801575.AAA <1> <br />