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sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-4bP <br /> 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 /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Analytical <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 107 North Main Street <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9901 E85 -01-03 Reported Feb 22, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol Ethanol Iso-Propanol <br /> QC Batch# GCO202991SHSHSB GCO202991SHSHSB GCO202991SHSHSB <br /> Analy Method. ISHS ISHS ISHS <br /> Prep Method: HS HS HS <br /> Analyst MM M M MM <br /> MS/MSD# 9901 E8601 9901 E8601 9901 E8601 <br /> Sample Conic N D N D N D <br /> Prepared Date 2/2/99 2/2/99 2/2/99 <br /> Analyzed Date 2/2/99 2/2/99 2/2/99 <br /> Instrument 1 D# GCV1 GCV1 GCV1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 66 66 64 <br /> MS % Recovery, 83 83 80 <br /> Dup Result 56 70 70 <br /> MSD % Recov. 83 88 88 <br /> RPD 00 59 90 <br /> RPD Limit 0-50 0-50 0-50 <br /> LCS # LC8020299 LCS0202-99 LCS02Oa9 <br /> Prepared Date. 2/2/99 2/2/99 2/2/99 <br /> Analyzed Date: 2/2/99 2/2/99 2/2/99 <br /> Instrument LD # GCV1 GCV1 GCv1 <br /> Conc. Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> LCS Result 64 62 63 <br /> LCS % Recov 80 78 79 <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 /> SEQUOIA 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 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 /> Kayvan Kimyar--- <br /> Project Manager MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9901 E85 BLA <1> <br />