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680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)92l-9600 FAX(916)921-0104 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792 1865 FAX(707)792-0342 <br /> Blaine Tech Services, Inc Client Project ID Shell 620 W Charter Way <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9808909 01, 03, 05-11, 12 Reported Sep 8, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes STEX as TPH <br /> Benzene <br /> QC Batch# GCO82798802005A CCO82798802005A GC082798802005A GC082798802005A GCO82798802005A <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 # 8081494 8081494 8081494 8081494 8081494 <br /> Sample Conc. ND N D ND NO N D <br /> Prepared Date 8/27/98 8/27/98 8/27/98 8/27/98 8/27/98 <br /> Analyzed Date 8/27/98 8/27/98 8/27/98 8/27/98 8/27/98 <br /> Instrument I D # HP5 HP5 HP5 HP5 HP5 <br /> Conc. Spiked 20Ng/L 20pg/L 20ug/L 60ug/L 220 ug/L <br /> Result 18 18 19 59 220 <br /> MS % Recovery so 90 95 98 100 <br /> Dup Result 18 19 19 59 220 <br /> MSD % Recov .. 90 95 95 98 100 <br /> RPD 00 54 00 00 00 <br /> RPD Limit- 0-20 0-20 0-20 0-20 0-50 <br /> LCS # LC8082798 LCS082798 LCS082798 LCS082798 LCS082798 <br /> Prepared Date- 8/27/98 8/27/98 8/27/98 8/27/98 8/27/98 <br /> Analyzed Date 8/27/98 8/27/98 8/27/98 8/27/98 8/27/98 <br /> Instrument I D #. HP5 HP5 HP5 HP5 HP5 <br /> Conc. Spiked 20pg/L 20ug/L 20,rg/L 60pg/L 220 pg/L <br /> LCS Result 19 19 19 r- 60 240 <br /> LCS % Recov.. 95 95 95 100 109 <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 /> SEA ALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> P 271 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 /> e gy nner <br /> Pro Vc Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference 9808909 BLA <1> <br />