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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 9 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> N <br /> Smith Environmental Client Project ID 21160, 94-331 01-06 <br /> 1260 Graphics Drive Matrix Liquid <br /> Modesto, CA 95351-1502 <br /> Attention Jeanne Homsey Work Order# 9608J33 01, 02 Reported Sep 13, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> QC Batch# GC0911960HBPEXA <br /> Analy Method EPA 8015M <br /> Prep Method EPA 3510 <br /> Analyst a Sullivan <br /> MS/MSD # 9608J1202 <br /> Sample Cone 2300 <br /> Prepared Date 9/11/96 <br /> Analyzed Date 9/12/96 <br /> Instrument I D # GCHP198 <br /> Cone Spiked 100o fig/L <br /> Result 3000 <br /> MS % Recovery 70 <br /> Dup Result 2800 <br /> MSD % Recov 50 <br /> RPD 69 <br /> RPD Limit 0-50 <br /> LCS.# BLK091196 <br /> Prepared Date 9/11/96 <br /> Analyzed Date 9/12/96 <br /> Instrument I D # GCHPI9B <br /> Cone Spiked 1000 fig/L <br /> LCS Result 1100 <br /> LCS % Recov 110 <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 ANALYTI preparation,and analytical methods employed for the samples The matrix spike 1s an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> rA/ai <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 batchV <br /> Project Manager **IVIS=Matrix Spike, MSD=IVIS Duplicate, RPD=Relative% Difference 9608.133 SSS <1> <br />