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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> t_l !D— 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Smith Environmental Client Project 1D 15666, 94-367 1 0-1 1 H N <br /> 1260 Graphics Drive Matrix Liquid <br /> Modesto, CA 95351-1502 <br /> Attention Jeanne Homseyr Work Order# 9607717-03-05 Reported Jul 29, 19% <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GC072096BTEX22A GC072096BTEX22A GC072096STEX22A GCO72096BTEX22A <br /> Ana ly Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method. EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J Heider J Helder J Helder J Heider <br /> MS/MSD #: 960782803 960782803 960782803 960782803 <br /> Sample Conc • N D N D N D N D <br /> Prepared Date 7/19/96 7/19/96 7/19/96 7/19/96 <br /> Analyzed Date. 7/19/96 7/19/96 7/19/96 7/19/96 <br /> Instrument I.D # GCHP22 GCHP22 GCHP22 GCHP22 <br /> Conc Spiked. 10 ug/L long/L 10 pg/L 30 Mg/L <br /> Result. 10 99 98 29 <br />• MS % Recovery, 100 99 98 98 <br /> Dup Result- 10 10 10 30 <br /> MSD % Recov 102 102 100 101 <br /> RPD' 20 30 30 27 <br /> RAD Limit 0-25 0-25 0-25 0-25 <br /> LCS#: BLK072096 BLK072096 ELK072096 ELK072096 <br /> Prepared Date: 7/19/96 7/19/96 7/19/96 7/19/96 <br /> Analyzed Date. 7/19/96 7/19/96 7/19/96 7/19/96 <br /> Instrument LD #: GCHP22 GCHP22 GCHP22 GCHP22 <br /> Conc. Spiked: 10ug/L 10Ng/L 10ug/L 30Ng/L <br /> LCS Result 98 10 99 30 <br /> LCS % Recov: 98 100 99 99 <br /> MS MS0 60-140 60-140 60-140 60-140 <br /> LCS 70.130 70-130 70-130 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 />�EWcManager <br /> ALYTIC preparation,and analytical methods employed for the samples The matrix spoke is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure tf <br /> the recovery of analytes from the matrix spoke does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Vyt <br /> Pro '*MS=Matrix Spoke,MSD=MS Duplicate, RPD=Relative%Difference 9607717 SSS <3> <br /> I <br />