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• Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (650) 164.9600 FAX (650)364-9233 <br /> 404 N Wiget Lane Walnut Creek, CA 94598 (510) 988-9600 FAX (510) 988-9673 <br /> ilk Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX (916)921-0100 <br /> %Blaine Tech Services, Inc. Client Project ID: Chevron 9-0557 /971124-S2 <br /> <1680 Rogers Ave. Matrix: Liquid <br /> .:San Jose, CA 95112 <br /> .'Attention: Fran Thie Work Order#: 9711G09-07 Reported: Dec 22, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Methanol Ethanol Iso-Propanol <br /> QC Batch#: GC1209971SHSHSB GC1209971SHSHSB GC1209971SHSHSB <br /> Analy. Method: ISHS ISMS ISHS <br /> Prep. Method: HS HS HS <br /> Analyst: T.Tran T.Tran T.Tran <br /> MS/MSD #: 9711 G1 903 9711G1903 9711G1903 <br /> Sample Cone.: N.D. N.D. N.D. <br /> Prepared Date: 12/9/97 12/9/x7 12/9/97 <br /> Analyzed Date: 12/9/97 12/9/97 12/9/97 <br /> Instrument I.D.#: GCV1 GCV1 GCV1 <br /> Cone. Spiked: 8.0 mg/L 8.0 mg/L 8.0 mg/L <br /> Result: 8.3 8.8 8.9 <br /> MS % Recovery: 104 110 111 <br /> Dup. Result: 8.4 8.5 8.4 <br /> MSD % Recov.: 105 106 105 <br /> RPD: 1,2 3.5 5.8 <br /> RPD Limit: 0-50 0-50 0-50 <br /> LCS #: BLK120997 BLK120997 BLK120997 <br /> Prepared Date: 12/9/97 12/9/97 12/9/97 <br /> Analyzed Date: 12/9/97 12/9/97 12/9/97 <br /> Instrument I.D.#: GCV1 GCV1 GCV1 <br /> Cone. Spiked: 8.0 mg/L 8.0 mg/L 8.0 mg/L <br /> LCS Result: 8.1 7.6 8.6 <br /> LCS % Recov.: 101 95 108 <br /> LCS <br /> Control Limits 50-150 50-150 50-150 <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> S IA NALYTICAL 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 /> I!nterference,the LCS recovery is to be used to validate the batch. <br /> e Penner <br /> Oject Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference 9711G09.BLA <10> <br /> `fid+ <br />