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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek.CA 94598 (915)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 49 <br /> Blaine Tech Services, Inc Client Project ID Shell 620 W Charter Way <br /> 1680 Rogers Ave Matrix Liquid <br /> San.lose, CA 95112 <br /> Attention Fran Thie Work Order# 9811689 -01-10 Reported Dec 2, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Gasoline <br /> QC Batch# 6110247 <br /> Analy Method EPA 8015M/8020M <br /> Prep Method EPA 5030 <br /> Analyst - <br /> MS/MSD # P811143-02 <br /> Sample Conc N D <br /> Prepared Date 11/16/98 <br /> Analyzed Date 11/16/98 <br /> Instrument I D # - <br /> Conc Spiked 1000pg/L <br /> Result 1140 <br /> MS % Recovery 103 <br /> Dup Result 1110 <br /> MSD % Recov 998 <br /> RPD 267 <br /> RPD Limit 0-12 <br /> LCS # LCS 111698 <br /> Prepared Date 11/16/98 <br /> Analyzed Date 11/16/98 <br /> Instrument I D # - <br /> Conc Spiked 1000pg/L <br /> LCS Result 1080 <br /> LCS % Recov 108 <br /> 53-146 <br /> LCS 79-127 <br /> Control Limits <br /> Please Note <br /> S QOIA NALYTICAL The LCS is a control sample of known,interferent-tree matrix that is analyzed using the same reagents, <br /> #22 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 /> Pe enner <br /> ect Manager **MS=Matrix Spike, MSD=MS Duplicate RPD=Relative% Difference 981168.9 BLA <11> <br />