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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 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> Smith -Canonie Environ+mental Client Project 1D 940367-10, Stockton Fire #2 <br /> 1710 Main Street Matrix Liquid <br /> Escalon, CA 95320 <br /> Attention Jeanne Hornsey Work Order# 9508K37 01-03, 05-06 Reported Sep 18, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GCO8319513TEX06A GCW3195BTE>MA GCO83195BTEX06A GC083195BTEX06A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst G Garcia G Garcia G Garcia G Garcia <br /> MS/MSD#- 9508,31504 950SJ1504 9508JI504 950SJ1504 <br /> Sample Conc - N D N D N 0 N D <br /> Prepared Date- 8/31/95 8/31/95 8/31/95 8/31/95 <br /> Analyzed Date: 8/31/95 8/31/95 8/31/95 8/31/95 <br /> Instrument I.D.#: GCHP6 GCHP6 GCHP6 GCHP6 <br /> Conc. Spiked- 10ftg/L 10jag/L 10pg/L 30Ng/L <br /> Result: 95 9 6 9 6 28 <br /> MS % Recovery: 95 96 96 93 <br /> Dup. Result: 92 9 2 9 2 27 <br /> MSD % Recov.: 92 92 92 90 <br /> RPD. 32 43 43 36 <br /> RPD Limit. 0-50 0-50 0-50 0-50 <br /> ,.. r , v row ,. v wwr r vin, v x}+ m.r. .. ] v r ]+ ' r n r v,'r^ ] v + + ' r + r . •+n+ ' <br /> LCS#- - - - - <br /> Prepared Date. - - - - <br /> Analyzed Date - - - - <br /> Instrument I.D.#: - - - - <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 /> n fortified with known quantities of specific compounds and subjected to the entire analytical procedure It <br /> 1V!1r�lY` 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 /> Vickie Tague Clark <br /> Project Manager *"MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9508K37 CAN <2> <br />