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� D 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 /> WOF Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100
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<br /> S Blaine Tech Services, Inc v n dent Project ID V Shell,Stockton/960515-T1
<br /> x,965 Timothy Drive Matra Liquid
<br /> ;San Jose, CA 95133
<br /> �Attentlon Jim Keller Work Order# 9605C67-05-06 u w _Reported _ May 29, 1996
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<br /> QUALITY CONTROL DATA REPORT
<br /> Analyte: Benzene Toluene Ethyl Xylenes
<br /> Benzene
<br /> QC Batch#: GC052296BTM2-A GM52296BTEX02A GCO52296BTE(02A GCO522968TEX02A
<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#: 960SA6004 9605A6004 9605A6004 9605A6004
<br /> Sample Conc.: N D N D N D N D
<br /> Prepared Date: 5/22/96 5/22/96 5/22/96 5/22/96
<br /> Analyzed Date. 5/22/96 5/22/96 5/22/96 5/22/96
<br /> Instrument LD #: GCHP2 GCHP2 GCHP2 GCHP2
<br /> Conc Spiked 10pg/L 10pg/L 10pg/L 30pg/L
<br /> Result: 88 89 89 24
<br /> MS% Recovery: 88 89 89 80
<br /> Dup. Result 88 89 88 26
<br /> MSD%Recov.: 88 89 88 87
<br /> RPD 00 00 11 80
<br /> RPD Limit. 0-25 0-25 0-25 0-25
<br /> LCS#: BLK052296 BLK052296 BLK052296 BLK052296
<br /> Prepared Date: 5/22/96 5/22/96 5/22/96 5/22/96
<br /> Analyzed Date: 5/22/96 5/22/96 5/22/96 5/22/96
<br /> Instrument I.D #: GCHP2 GCHP2 GCHP2 GCHP2
<br /> Conc.Spiked. 10pg/L 10pg/L 10pg/L 30pg/L
<br /> LCS Result: 9 3 94 95 29
<br /> LCS % Recov.: 93 94 95 97
<br /> 60-140 60.140 60-148 60.140
<br /> LCS 70-130 7G-130 70-130 70-130
<br /> Control Limits
<br /> Please Note
<br /> The LCS is a control sample of known,interferent-free matnx that 1s analyzed using the same reagents,
<br /> IA 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 /> Ceg erect Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9605067 SLA <4>
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