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• •� Sequoia 680 Chesapeake Dnve Redwoad 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 /> qlW Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> 0G"fl=L Yt� Y v v nw Client Project It) Chevron #9-4275 r 4< <br /> 4211 May Ave Matra Liquid <br /> Wichita, KS 67209 v <br /> `Attention Justin Ward QC Sample Group 5120579-588 Reported Dec 20, 1995, <br /> (QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#. GC121595 GC121595 GC121595 GC121595 <br /> 802009A 802009A 802009A 802009A <br /> Analy Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> AnalystN Beaman N Beaman N Beaman N Beaman <br /> MS/MSD#. 5120539 5120539 5120539 5120539 <br /> Sample Cone. NO N D NO NO <br /> Prepared Date: 12/15/95 12/15/95 12/15/95 12/15/95 <br /> Analyzed Date 12/15/95 12/15/95 12/15/95 12/15/95 <br /> Instrument I D #- HP 9 HP-9 HP-9 HP 9 <br /> Cone Spiked 20 ug/L 20}rg/L 20 ug/L 60 ug/L <br /> Result. 18 19 19 66 <br /> MS % Recovery 90 95 95 110 <br /> Dup Result 18 19 19 66 <br /> MSD% Recov 90 95 95 110 <br /> RFD: 00 00 00 00 <br /> RPD Limit 0-20 0.20 0-20 0-20 <br /> LCS#: 4LCS121595 4LCS121595 4LCS121595 4LCS121595 <br /> Prepared Date 12/15/95 12/15/95 12/15/95 12/15/95 <br /> Analyzed Date 12/15/95 12/15/95 12/15/95 12/15/95 <br /> Instrument LD# HP-9 HP-9 HP-9 HP-9 <br /> Cone. Spiked- 20pg/L 20pg/L 20pg/L 60yg/L <br /> LCS Result 18 19 19 64 <br /> LCS% Recov - 90 95 95 107 <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Please Note <br /> The LCS 1s a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> NALYTICAL, #1271 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 /> Interference,the LCS recovepl is to be used to validate the batch <br /> Ke a Imer "* =Matrix pike,M Duplicate,RPD=Relative% lfference <br /> Proje Manager <br /> 5120579 GTW <3> <br />