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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 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Canorne Environmental Client Project ID 94-273, Quik Stop 132 <br /> 7901 Stoneridge Drive, Suite 100 Matrix Liquid <br /> Pleasanton, CA 94588 <br /> Attention Rich Garlow Work Order# 9502G45-02 Reported Mar 10, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GC030295BTEX02A GC030295BTDCO2A GCO30295BTEX02A GC030295BTEX02A <br /> Analy. Method. EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method. EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD #: 9502G2001 9502G2001 9502G2001 9502G2001 <br /> Sample Conc.: ND ND N D ND <br /> Prepared Date: 3/2/95 3/2/95 3/2/95 3/2/95 <br /> Analyzed Date. 3/2/95 3/2/95 3/2/95 3/2/95 <br /> Instrument 1 D.# GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc.Spiked- 10Ng/L 10pg/L 10ftg/L 30Ng/L <br /> Result 10 10 10 31 <br /> MS % Recovery. 100 100 100 103 <br /> Dup Result: 10 11 11 34 <br /> MSD % Recov.: 100 110 110 113 <br /> RPD: 00 95 95 92 <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> LCS #: - - - - <br /> Prepared Date: <br /> Analyzed Date. <br /> Instrument I.D #. - - <br /> Conic 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 /> SEQUOIrark <br /> L preparation,and analytical methods employed for the samples The matrix spike 1s 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 /> Vicki Ta <br /> ProjectManager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9502G45 CAN <2> <br />