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1 vv <br /> Sp� 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> equoia 404 N Wiget lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> gill# Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX{916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 707 792-1865 FAX 707)792-0342 <br /> u} l t s <br /> Gettler Ryan%Geostrategles Client Project ID Unocal 5886, 180137 85 <br /> {6747 Sierra Court, Ste J Matrix Liquid <br /> €Dublin, CA 94568 f <br /> Attention Deanna Harding Work Order# 9806C26 01-10 Reported Jul 13, 1998 <br /> n <br /> w 9806C27 11, 12 A <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes BTEX as TPH <br /> Benzene <br /> CC Batch# GCO62998802002A GCO62998802002A GC062998802002A GCO62998802002A GCO62998802002A <br /> Analy. Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. D Newcomb D Newcomb D Newcomb D Newcomb D Newcomb <br /> MS/MSD #. 8061848 8061848 8061848 8061848 8061848 <br /> Sample Cone : N D N D N 0 N D N D <br /> Prepared Date: 6/29/98 6/29/98 6/29/98 6/29/98 6/29/98 <br /> Analyzed Date- 6/29/98 6/29/98 6/29/98 6/29/98 6/29/98 <br /> Instrument LD # HP2 HP2 HP2 HP2 H132 <br /> Cone Spiked 20ug/L 20ug/L 20ug/L 60ug/L 360pg/L <br /> Result 18 18 19 57 330 <br /> MS % Recovery 90 90 95 95 92 <br /> Dull Result 18 18 18 57 320 <br /> Q MSD % Recov 90 90 90 95 89 <br /> RPD 00 00 54 00 31 <br /> RPD Limit. 0-20 0-20 0-20 0-20 0-50 <br /> LCS # LC8062998 LCS062998 LCS062998 LCS062998 LCS062998 <br /> Prepared Date 6/29/98 6/29/98 6/29/98 6/29/98 6/29/98 <br /> Analyzed Date 6/29/98 6/29/98 6/29/98 6/29/98 6/29/98 <br /> Instrument I D # HP2 HP2 HP2 HP2 HP2 <br /> Cone Spiked. 20ug/L 20ug/L 20ug/L 60ug/L 360ug/L <br /> LCS Result- 17 17 17 54 320 <br /> LCS % Recov : 85 85 85 90 89 <br /> LCS 70-130 70-130 70-130 70-130 60-140 <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 /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> ,ELAP #1271 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 /> Tod Granlcher <br /> Project Manager *'MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9806C26 GET <2> <br />