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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9133 <br /> Sequoia 404 N Wiget Lane walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 14W Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 0 <br /> Blaine Tech Services, Inc Client Project ID Shell 2575 Country Club Blvd <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9810741-07, 9810742-18, Reported Nov 3, 1998 <br /> 9810743-19-24 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol Ethanol Iso-Propanol <br /> QC Batch# GC1015981SHSHSB GC101598ISHSHSB GC1015981SHSHSB <br /> Analy Method ISHS ISHS ISHS <br /> Prep Method HS HS HS <br /> Analyst T Sorokin T Sorokin T Sorokin <br /> MS/MSD # 981074217 981074217 981074217 <br /> Sample Conc ND ND ND <br /> Prepared Date 10/15/98 10/15/98 10/15/98 <br /> Analyzed Date 10/15/98 10/15/98 10/15/98 <br /> Instrument I D # GCV1 GCV1 GCV1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 72 84 87 <br /> MS % Recovery 90 105 109 <br /> Dup Result 70 81 85 <br /> MSD % Recov 88 101 106 10 <br /> RPD 28 36 23 <br /> RpD_Llmlt -o-5o 0-50 0-50 <br /> LCS # LCS101598 LCS101598 LCS101598 <br /> Prepared Date 10/15/98 10/15/98 10/15/98 <br /> Analyzed Date 10/15/98 10/15/98 10/15/98 <br /> Instrument I D # GCV1 GCV1 GCV1 <br /> Conc Spiked 8 0 mg/L 8 0 m9/L 8 0 mg/L <br /> LCS Result 76 82 87 <br /> LCS % Recov 95 103 109 <br /> 50150 50-150 50-150 <br /> LCS 70-130 70-130 70-130 <br /> Control Limits <br /> tPeyPlease Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> AL ICAL preparation,and analytical methods employed far the samples The matrix spike is an aliquot of sample <br /> fortified known quantities of specific compounds and subjected to the entire analytical procedure If <br /> t overy 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 /> ranager **MS=Matrix Spike MSD=MS Duplicate, RPD=Relative% Difference 9810737 BLA <13> <br />