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' Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-%00 FAX(650)364-9233 <br /> 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)921-9600 FAX(916)921-0100 <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 1267 Country Club <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9811690 -01-06 Reported Dec 2, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> OC Batch# SP1120988015EXA <br /> Analy Method EPA8015M <br /> Prep Method EPA 3510 <br /> Analyst K Grubb <br /> MS/MSD # BLK112098 <br /> Sample Conc N D <br /> Prepared Date 11/20/98 <br /> Analyzed Date 11/20/98 <br /> Instrument I D # HP3 <br /> Conc Spiked 500pg/L <br /> Result 460 <br /> MS % Recovery 92 <br />. Dup Result Soo <br /> MSD % Recov 100 <br /> RPD 83 <br /> RPD Limit 0-50 <br /> LCS # LCS112098 <br /> Prepared Date 11/20/98 <br /> Analyzed Date 11/20/98 <br /> Instrument I D # HP3 <br /> Conc Spiked 500 ue/L <br /> LCS Result 470 <br /> LCS % Recov 94 <br /> 50-150 <br /> LCS 60-140 <br /> Control Limits <br /> Please Note <br /> SEQU ANALYTICAL The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> EI 1 71 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 /> egg Penner <br /> OJe Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9811690 SLA <1> <br />