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+ �Y Sequoia680 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 /> Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> Blaine Tech Services, Inc Client Project ID Shell, Stockton, 960730-H1 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9608098 -03 Reported Aug 22, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GCO80996BTEX02A GC080996BTEX02A GC080996BTEX02A GC0809968TEX02A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst 1) Jirsa D Jirsa D Jirsa D Jirsa <br /> MS/MSD# G9608244-06 079608244-06 G9608244-06 G9608244-06 <br /> Sample Cone N D N D N D N D <br /> Prepared Date 8/9/96 6/9/96 8/9/96 8/9/96 <br /> Analyzed Date 8/9/96 8/9/96 8/9/96 8/9/96 <br /> Instrument I D # GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> Result 11 11 11 31 <br /> MS % Recovery 110 110 110 103 <br /> Dup Result 11 11 11 32 <br /> MSD % Recov 110 110 110 107 <br /> RPD 00 00 00 32 <br /> RPD Limit 0-25 0-25 0-25 0-25 <br /> LCS # GBLK080996 GBLK080996 GBLK080996 GBLK080996 <br /> Prepared Date 8/9/96 8/9/96 8/9/96 8/9/96 <br /> Analyzed Date. 8/9/96 8/9/96 8/9/96 8/9/96 <br /> Instrument I D.# GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc. Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> LCS Result 10 10 10 31 <br /> LCS %Recov 100 100 100 103 <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 /> QLIOIA NALYTICAL 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 io validate the batch <br /> eg <br /> ct Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9608098 BLA <2> <br />