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''Y' * 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N W,8et Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> — Analytical 819 Straker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(915)921-010 0 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br />• <br /> Blaine Tech Services, Inc Client Project ID Shell, 4445 Pershing Ave <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thle Work Order# 9808904 05-08 Reported Sep 8, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes BTEC as TPH <br /> Benzene <br /> CC Batch# GC082698802009A GC082698802009A GC082698802009A GCO82698802009A GCO82698802009A <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 # 8080596 8080596 8080596 8080595 8080596 <br /> Sample Conc. ND ND N D ND N D <br /> Prepared Date 8/26/98 8/26/98 8/26/98 8/26/98 8/26/98 <br /> Analyzed Date 8/26/98 8/26/98 8/26/98 8/26/98 8/26/98 <br /> Instrument I D # HP9 HP9 HP9 HP9 HP9 <br /> Conc Spiked 20 ug/L 20 ug/L 20 ug/L 60 jig/L 240 ug/L <br /> Result 19 20 21 65 240 <br /> MS % Recovery 95 100 105 108 100 <br /> Dup Result 19 21 21 65 240 <br /> MSD % Recov 95 105 105 108 100 <br /> RPD 00 49 00 00 00 <br /> RPD Limit 0-20 0-20 0-20 0-20 0-50 <br /> LCS # LCS082698 LCS082698 LCS082698 LCS082698 LCS082698 <br /> Prepared Date 8/26/98 8/26/98 8/26/98 8/26/98 8/26/98 <br /> Analyzed Date 8/26/98 8/26/98 8/26/98 8/26/98 8/26/98 <br /> Instrument I ❑ # HP9 HP9 HP9 HP9 HP9 <br /> Conc Spiked 20ug/L 20ug/L 20ug/L 60ug/L 240yg/L <br /> LCS Result 22 23 24 - 75 260 <br /> LCS % Recov 110 115 120 125 108 <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 /> U IA A ALYTICAL preparation,and analytical methods employed for the samples The matrix spike Is an aliquot of sample <br /> 127 f6rtified 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 /> eggy enner <br /> P ec Manager **MS=Matrix Spike, MSD=IVIS Duplicate, RPD=Relative%Difference 9808904 BLA <2> <br />