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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 /> 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 /> Blaine Tech Services, Inc Client Project ID Shell 3725 Tracy Blvd <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9808903 -01-04 Reported Sep 2, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Methanol <br /> QC Batch#- GC0814981SHSHSB <br /> Analy Method: ISHS <br /> Prep Method: HS <br /> Analyst- T S <br /> MS/MSD#. N D <br /> Sample Conc ND <br /> Prepared Date 8/14/98 <br /> Analyzed Date 8/14/98 <br /> Instrument I D # GCV01 <br /> Conc Spiked 8 0 mg/L <br /> Result 67 <br /> MS % Recovery 64 <br /> Dup. Result 61 <br /> MSD % Recov 75 <br /> RPD 94 <br /> RPD Limit. 0-50 <br /> LCS # LCS081498 <br /> Prepared Date 8/14/98 <br /> Analyzed Date- 8/14/98 <br /> Instrument I.D #- GCv01 <br /> Conc Spiked 8 0 mg/L <br /> LCS Result 78 <br /> LCS % Recov 98 <br /> 50-150 <br /> LCS 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 /> AN ICAL 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 /> eg enner <br /> Pr lett Manager '"*MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9808903 SLA <1> <br />