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s w' ►+ irY <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 9459$ (SlD) 986-9600 FAX(510)98$9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> -Smith-Canonie Environmental v+µClient Profeci iD 940357-10, Stockton Fire#2 <br /> 1710 Main Street Matrvc Liquid <br /> Escalon, CA 95320 <br /> Attention Jeanne Hornsey Work Order# 9508K37 04, 07 Reported Sep 18, 1995 <br /> t L v r ♦ + v r vrn rtiv rvmv rrvx.v } v+v+ •v4 v w rr +- .... +nr +++ r ryrr rrt x n Y <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#. GC082995BTEX07A GCW299513TEX07A GC082995BTEX07A GCO82995STEX07A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: R.Geckler R Geckler R Geckler R Geckler <br /> MS/MSD#: 9508D7403 9WSD7403 9508D7403 9508D7403 <br /> Sample Conc.: N D N D N D N D <br /> Prepared Date: 8/29/95 8/29/95 8/29/95 8/29/95 <br /> Analyzed Date: 8/29/95 8/29/95 8/29/95 8/29/95 <br /> Instrument I.D.#' GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc Spiked. lour/L long/L 10pg/L 30Eig/L <br /> Result: 10 99 10 30 <br /> MS% Recovery: 100 99 100 100 <br /> Dup Result: 10 10 10 31 <br /> MSD% Recov.: 100 100 100 103 <br /> RPD: 00 10 00 33 <br /> RPD Limit 0-50 0-50 0.50 0-50 <br /> x v4 v + vY`+v u ^ x rry}tisv+r+xvv + n } vt r v v.J+ v vvr 1 +x AS v v{~i%i}nr h4ri n{vin rr n v-w v u x vv{i1A ]SQ v <br /> LCS#: - - - - <br /> Prepared Date: - - - - <br /> Analyzed Date: - - - - <br /> Instrument - <br /> Conc. Spiked: - - - - <br /> LCS Result- - - - - <br /> LCS % Recov - - - - <br /> LCS 71-133 72-128 72-130 71-120 <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 /> 1 interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9508K37 CAN 43> <br />