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Sequoia 670 Chetalxake Drive Redwood City,CA 94063 (650) 3649600 FAX(650)3649233 <br /> 804 N W�11et Lane Wa1rxu Creek CA 94593 (5101 "ll-9600 FAX(510)999-%73 <br /> Analytical 919 Striker Avenue,Suite a Sacramento.CA 9SR34 (916) 921-9600 FAX(916)92 1.01 on <br /> Elaine Tech Services, Inc. talent project to She <br /> Siockton J 90805 St <br /> 1680 Rogers Avenue Matrix: Liquid <br /> San Jose, CA 95112 <br /> Attention Fran The Work Order#: 9708341 -01,02, Reported: Aug 13, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: TCE p-Xylene <br /> OC Batch#: GCO811971SHSHSA GC0s11971SHSHSA <br /> Analy. Method: ISHS ISHS <br /> Prep. Method: HS HS <br /> Analyst: T Tran T.Tran <br /> MS/MSD#: 970816801 970816901 <br /> Sample Conc.: N D N D <br /> Prepared Date: 8/11/97 8/11/97 <br /> Analyzed Date: 8/11/97 8/11/97 <br /> Instrument I.D.#: GCv1 GCv1 <br /> Conc. Spiked: 1.0 mg/L 0.20 mg/L <br /> Result: 0.96 0-15 <br /> MS% Recovery: 96 75 <br /> Dup. Result: 0.79 0.15 <br /> MSD%Recov.: 79 75 <br /> RPD: 19 0.0 <br /> RPD Limit: 0-40 0-40 <br /> LCS#: BLK081197 BLK081197 <br /> Prepared Date: 8/11/97 8/11/97 <br /> Analyzed Date: 8/11/97 8/11/97 <br /> Instrument I.D.#: GCv1 GDv1 <br /> Conc. Spiked: 1.0 mg/L 020 mg/L <br /> LCS Result: 0.96 0.18 <br /> LCS%Recov.: 96 90 <br /> So-iso 50.150 <br /> LCS 70.190 70190 <br /> Control Limits <br /> Plesse Note, <br /> The LCS is a control sample of known,interferenidree matrix that is analyzed using the same reagents, <br /> SEQUOIA ALYTIC preparation,and analytical method&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 /> 44eilalyn ••M =Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> Project Mana er page 2 of 2 9708341.SLA <2> <br /> 011 <br /> 6 -d LJOdf Wd9V:Z L66L-VL-2 <br />