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• Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> RESNA Client Project ID 150070 01, Chase Chevrolet <br /> 1710 Main Street Matrix LIQUID <br /> Escalon, CA 95320 <br /> Attention Greg Stahl Work Order# 9412F68 05-07 Reported Jan 6, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> CC Batch# GC122994BTEX03A GC122994BTEX03A GC122994BTEX03A GC122994BTEX03A <br /> Analy Method E=PA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method N A N A. N A N A <br /> Analyst J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD # 9412F6514 9412F6514 9412F6514 9412F6514 <br /> Sample Cone N D N D N 0 N D <br /> Prepared Date N A N X N A N A <br /> Analyzed Date 12/29/94 12/29/94 12/29/94 12/29/94 <br /> Instrument I D # GCHP3 GCHP3 GCHP3 GCHP3 <br /> Cone Spiked 10,ug/L 10ug/L 1OHg/L 30ug/L <br /> Result 9 2 93 92 28 <br /> MS % Recovery 92 93 92 93 <br /> Dup Result' 9 9 99 9 9 30 <br /> MSD % Recov: 99 99 99 100 <br /> RPD 73 63 73 69 <br /> RPD Limit 0-50 0-50 0-50 0-50 <br /> LCS# - - <br /> Prepared Date - <br /> Analyzed Date - - - <br /> Instrument I D # - - <br /> Cone Spiked - <br /> LCS Result - <br /> LCS % Recov - - - - <br /> 71-133 72-128 72-130 71-120 <br /> LCS <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 h <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 /> Vicki <br /> e ague Clark <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9412F68 WAT <3> <br /> m <br />