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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 /> a- ) 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)79Z-0342 <br /> 1551 industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> .................................. <br /> ............ ........-..... <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 /> :rAttention: Fran Thie Work Order#: 9901 E87-01 Reported: Feb 19, 1999 .. <br /> . ............. <br /> ......... <br /> ........... <br /> .......................... <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Methanol Ethanol iso-Propanol <br /> OC Batch#: GCO209991SHSHSB GCO209991SHSHSB GCO209991SHSHSB <br /> Analy. Method: ISHS ISHS ISHS <br /> Prep. Method: HS HS HS <br /> Analyst: M.M. M.M. M.M. <br /> MS/MSD #: 9901E8801 9901E81301 9901E8801 <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.D.#: GCV1 GCV1 GCV1 <br /> Conc. Spiked: 8.0 mg/L 8.0 mg/L 8,0 mg1L <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 /> ......... ............... <br /> .............. <br /> ............ ........ ............ <br /> ............. <br /> .. ............ .......... ........... <br /> LCS #: LCS020999 LCS020999 LCS020999 <br /> Prepared Date: 2/9/99 2/9/99 2/9/99 <br /> Analyzed Date: 2/9/99 2/9/99 2/9/99 <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: 7.0 7.0 7.3 <br /> LCS % Recov.: 88 88 91 <br /> MS/MSD 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 analytica;procedure. If I <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> jKainterference, <br /> r4i�m the LCS recovery is to be used to validate the batch. <br /> Project Manager MS=Matrix Spike, MSD=NIS Duplicate, RPD=Relative%Difference 9901E86.13LA <7> <br />