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Sequoia 680 Chesapeake Drive Redwood Cim CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 Ni Wiget lane Walnut Creek,CA 94599 (510) 988 4600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> ' -M3 <br /> vices, I -5/9508258lalne Tech c CD <br /> y�985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9508K52 -01-04 v, Reported Sep 6, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: GC0829958TEX22A GCO82995BTEX22A GCO82995BTEX22A GCO82995BTEX22A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Pree Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. R Geckler R Geckler R Geckler R Geckler <br /> MS/MSD#: 9508D7403 950BD7403 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 #- GCHP22 GCHP22 GCHP22 GCHP22 <br /> Conc Spiked: 10jig/L long/L 1opg/L 30jig/L <br /> Result, 10 10 11 32 <br /> MS %Recovery 100 1150 110 107 <br /> Dup. Result' 11 11 11 33 <br /> MSD %Recov.: 110 110 110 110 <br /> RPD 95 95 00 31 <br /> RPD Limit: 0-50 0-50 050 0-50 <br /> LCS #' - <br /> Prepared Date. - - <br /> Analyzed Date: - - - <br /> Instrument I D #* - - - <br /> Conc Spiked. - <br /> LCS Result - - - <br /> LCS%Recov .. - - - <br /> MS/MSD <br /> LCS 71-133 72-128 72130 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 /> . SE O A ICAL 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 recovery is to be used to validate the batch <br /> gg enner <br /> 9508K52 BLA <1> <br /> Project Manager "MS-Matrix Spike, MSD-MS Duplicate, RPD=Relative%Di Difference <br />