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C68O sapeake Drive Redwood City,CA 9401-3411111) (650)364-9600 FAX(650)364-9233 <br /> J <br /> qUOla 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue.Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> frill>I� Analytical 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-034Z <br /> >` > . : > >>> » > <br /> < <>r ' .......................................................................... <br /> ATC Associates, Inc. Tient Project......... <br /> panDYenPop/N&SIrri9ation <br /> .....1260 Graphics Drive Matrix: Liquid <br /> Modesto, CA 95351-1502 <br /> Attenti n: Jeanne <br /> Homsey Work Order# 9807772-05-08 Reported: Jul....3...1..� <br /> ... .. ... ......................... . .. . . . ....i. <br /> .9...9...8..;:>:':: <br /> CQUALITY CONTROL DATA REPORT <br /> Analyte: MTBE <br /> L. QC Batch#: MS071798MTBEH6A <br /> Analy. Method: EPA 8260 <br /> rPrep. Method: N.A. <br /> L,r Analyst: M.Williams <br /> MS/MSD#: 980790907 <br /> Sample Conc.: N.D. <br /> Prepared Date: 7/17/98 <br /> Analyzed Date: 7/17/98 <br /> Instrument I.D.#: H6 <br /> rConc. Spiked: 50 Ng/L <br /> �.i <br /> Result: 51 <br /> MS % Recovery: 102 <br /> LDup. Result: 52 <br /> MSD % Recov.: 104 <br /> RPD: 1.9 <br /> RPD Limit: 0-25 <br /> ...................................................................................................................... <br /> LCS#: LCS071798 <br /> Prepared Date: 7/17/98 <br /> Analyzed Date: 7/17/98 <br /> Instrument I.D.#: H6 <br /> Conc. Spiked: 50 Ng/L <br /> LCS Result: 53 <br /> LCS % Recov.: 106 <br /> C <br /> 60-140 <br /> LCS 70-130 <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 /> 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 n Kimy <br /> Project Manager **MS=Matrix Spike,MSD MS Duplicate,RPD=Relative%Difference 9807772.AAA <3> <br />