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Sequoia 680 Chesapeake Drive Redwood City.CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N.WISet 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 /> Analytical 1455 McDowell Blvd. North.Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ....... .. --X1. X1. X <br /> .......................... <br /> ......... . <br /> 'A <br /> 7C Associates, Inc. Client Project ID: Inland Paint, 17295.0001 <br /> 1260 Graphics Drive Matrix: Solid <br /> Modesto, CA 95351-1502 <br /> .....Attention: Drew Van Allen Work Order#: 9809749-01-05 Reported: Sep 25, 1998.%; <br /> ............. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: MTBE <br /> OC Batch#: MS091598MTBEEXB <br /> Analy. Method: EPA 8260 <br /> Prep. Method: N.A. <br /> Analyst: L.Duong <br /> MS/MSD#: 980,984201 <br /> Sample Conc.: N.D. <br /> Prepared Date: 8/15/98 <br /> Analyzed Date: 8/15/98 <br /> Instrument 1,D.#: H6 <br /> Conc. Spiked: 2500 pg/Kg <br /> Result: 2200 <br /> MS %Recovery: 88 <br /> Dup. Result: 2200 <br /> MSD %Recov.: 88 <br /> RPD: 0.0 <br /> RPD Limit: 0-25 <br /> ........... <br /> .................. <br /> ..................................... .... ................................ <br /> LCS#: LCS091698 <br /> Prepared Date: 9/16/98 <br /> Analyzed Date: 9/17/98 <br /> Instrument 1,D.#: H15 <br /> Conc. Spiked: 2500,ug/Kg <br /> LCS Result: 2200 <br /> LCS%Recov.: Be <br /> MS/MSD 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 /> Kirny <br /> P oJect Manager MS=Matrix Spike,MSD=IVIS Duplicate, RPD=Relative%Difference 9809749.AAA <3> <br />