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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 (925)988-9600 FAX(925)988-9673 <br /> a- —N <br /> Analytical gig Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)92t-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232 9612 <br /> Blaine Tech Services, Inc Client Project ID Shell 3725 S Tracy Blvd <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order # 9903442 -01-03 Reported Mar 23, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol Ethanol Iso-Propanol <br /> QC Batch# GC0316991SHSHSB GCO316991SHSHSB GCO316991SHSHSB <br /> Analy Method ISHS ISHS ISHS <br /> Prep Method HS HS HS <br /> Analyst MM M M MM <br /> MS/MSD# 990344203 990344203 990344203 <br /> Sample Conc N D N D N D <br /> Prepared Date 3/16/99 3/16/99 3/16/99 <br /> Analyzed Date 3/16/99 3/16/99 3/16/99 <br /> Instrument I D # GCV1 GCv1 GCv1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 78 87 87 <br /> evS % Recovery 98 109 109 <br /> Dup Result 79 89 94 <br /> MSD %Recov 99 111 118 <br /> RPD 13 23 77 <br /> RPD Limit 0-50 0-50 0-50 <br /> LCS # LCS031699 LCS031699 LCS031699 <br /> Prepared Date 3/16/99 3/16/99 3/16/99 <br /> Analyzed Date 3/16/99 3/16/99 3/16/99 <br /> Instrument I D # GCv1 GCv1 GCvi <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> LCS Result 80 87 90 <br /> LCS % Recov loo 109 113 <br /> 50-150 50-150 50-150 <br /> LCS 70-130 70-130 70-130 <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 /> QUOIA ANALYTICAL 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 It <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 /> Ka Kimyal **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference <br /> Project Manager 9903442 BLA 1 <br />