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Sequoia 680 Chesapeake Drive Redwood Clty,CA 94063 (550)364-9600 FAX(650)354 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 /> IWO Analytical 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 /> �-07 <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#: 9901E88-01-06 Reported: Feb 19, 1999','.. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Methanol Ethanol iso-Propanol <br /> QC Batch#: GCO203991SHSHSB GCO203991SHSHSB GCO203991SHSHSB <br /> Anally. Method: 1SHS 1SHS 1SHS <br /> Prep. Method: HS HS . HS <br /> Analyst: M.M. M.M. M.M. <br /> MS/MSD #: 9901EB801 9901E8801 9901EB301 <br /> Sample Conc.: N.D. N.D. N.D. <br /> Prepared Date: 2/3/99 2/3/99 2/3/99 <br /> Analyzed Date: 2/3/99 2/3/99 2/3/99 <br /> Instrument I.Q.#: GCV1 GCV1 GCV1 <br /> Conc. Spiked: 8.0 mg/L 8.0 mg/L 8.0 mg/L <br /> Result: 6.4 7.5 7.6 <br /> MS % Recovery: 80 94 95 <br /> Dup. Result: 6.0 6.8 7.1 <br /> MSD % Recov.: 75 85 89 <br /> RPD: 6.5 9.8 6.8 <br /> RPD Limit: 0-50 0-50 0-50 <br /> LCS #: LC6020399 LCS020399 LCS020399 <br /> Prepared Date: 2/3/99 2/3/99 2/3/99 <br /> Analyzed Date: 2/3/99 2/3/99 2/3/99 <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: 6.1 6.6 6.6 <br /> LCS % Recov.: 76 B3 83 <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. 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 /> Kayv imya' <br /> Project Manager **MS Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9901E86.SLA <9> <br />