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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 /> 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 /> 1551 Industrial Road San Carlos, CA 94070-4111 (650) 232-9600 FAX(650)232-9612 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-9840, 4344 Waterloo <br /> 1680 Rogers Ave Matrix Liquid <br /> Sari Jose, CA 95112 <br /> Attention Christine Lillie Work Order# 9903691 01-03 Reported Apr 27, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol Ethanol Iso-Propanol <br /> CC Batch# GC03309918HSHSB GCO330991SHSHSB GC0330991SHSHSB <br /> Analy Method ISHS ISHS ISHS <br /> Prep Method HS HS HS <br /> Analyst M M M M M M <br /> MS/MSD# 9903A8204 9903A82D4 9903A82D4 <br /> Sample Conc N D N D N D <br /> Prepared Date 3/29/99 3/29/99 3/29/99 <br /> Analyzed Date 3/29/99 3/29/99 3/29/99 <br /> Instrument I.D# GCv1 GCv1 GCv1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> Result 79 89 91 <br /> MS %Recovery 99 111 114 <br /> Dup Result 81 92 96 <br /> MSD % Recov 101 115 120 <br /> RPD 25 33 53 <br /> RPD Limit o-40 0-40 0-40 <br /> LCS# LCS033099 LCS033099 LCS033099 <br /> Prepared Date 3/30/99 3/29/99 3/29/99 <br /> Analyzed Date 3/30/99 3/29/99 3/29/99 <br /> Instrument I D # GCv1 GCv1 GCv1 <br /> Conc Spiked 8 0 mg/L 8 0 mg/L 8 0 mg/L <br /> LCS Result 79 88 88 <br /> LCS % Recov 99 110 110 <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 y 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 /> Ka imyMS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> Pro)ect Manager 9903891 BLA <1> <br />