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,N 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 /> 1)fr�ll� Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> }r ~i 4ir•r r " ry <br /> ,.Blaine Tech'Servicers,r Inc Client Project ID Shell, Stockton/960516-A1 <br /> «985 Timothy Drive Matroc Liquid <br /> ,}San Jose, CA 95133 <br /> "Attention Jim Keller Work Order# 9605C69-02, 05 Reported May 29, 1996' <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> GC Batch#' GCO523966TEX02A GCO52396BTEX02A GCO52396BTEX02A GC052396STEX02A <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 Woo J Woo J Woo J Woo <br /> MS/MSD # 960597801 960597801 960597801 960597801 <br /> Sample Cone. N D N D N D N D <br /> Prepared Date, 5/23/96 5/23/96 5/23/96 5/23/96 <br /> Analyzed Date: 5/23/96 5/23/96 5/23/96 5/23/96 <br /> Instrument l.D.#: GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc.Spiked: 10pg/L 10pg/L 10ug/L 30pg/L <br /> Result 9 2 8 9 8 6 24 <br /> MS%Recovery 92 89 86 so <br /> Dup. Result 79 78 80 20 <br /> MSD % Recov• 79 78 80 67 <br /> RPD. 15 13 72 18 <br /> RPD Limit: 0.25 0-25 0-25 0-25 <br /> vv vv,v , + r , „ +} ' v r r t ` , rr v v.. ' . 4~♦ ,r v rvt v• ♦ , r n v r .,r v.v <br /> LCS #: BLK0523% BLKD52396 BLK0523% BLK0523% <br /> Prepared Dale, 5/23/96 5/23/96 5/23/96 5/23/96 <br /> Analyzed Date: 5/23/96 5/23/96 5/23/96 — 5/23/96 <br /> Instrument I D.#: GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc.Spiked: 10pg/L 10pg/L 10pg/L 30pg/L <br /> LCS Result. 11 11 98 30 <br /> LCS%Recov : 110 110 98 100 <br /> 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70.130 70-130 <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 /> I A ALYTICAL 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 /> eg <br /> P ct anager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9605069 BLA <2> <br />