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Sequoia 660 Chesap<ake Drive Redwood City,CA 94063 (650) 364.9600 FAX(650)364.9233 <br /> Sequoia N.Wiget Cane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988.9673 <br /> t: 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921.0100 <br /> �rill> <br /> _ F Analytica(D l <br /> I r <br /> Bla ne Tech Services, Inc. Client Project ID: Chevron 9-8632/970902-F2 <br /> 1680 Rogers Ave. Matrix: Liquid <br /> `>San Jose, CA 95112 <br /> "'Attention: Fran Thie Work Order#: 9709126 -05 Reported: Sep 17, 1997..:. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Total Recoverable <br /> Petroleum Hydrocarbons <br /> QC Batch#: IN091197418100A <br /> Analy. Method: EPA 418.1 <br /> Prep. Method: N.A. <br /> Analyst: S. Fong <br /> MS/MSD#: BLK091197 <br /> Sample Cone.: N.D. <br /> Prepared Date: 9/11/97 <br /> Analyzed Date: 9/12/97 <br /> Instrument I.D.#: FTIR1 <br /> Conc. Spiked: 4.2 mg/L <br /> Result: 5.1 <br /> MS % Recovery: 121 <br /> Dup. Result: 4.2 <br /> MSD % Recov.: 100 <br /> RPD: 19 <br /> RPD Limit: 0-30 <br /> LCS #: - <br /> t Prepared Date: <br /> Analyzed Date: <br /> Instrument I.D.#: <br /> Conc. Spiked: <br /> 1 <br /> LCS Result: - <br /> LCS %Recov.: - <br /> 60-140 <br /> LCS 70-130 <br /> Control Limits <br /> Please Note: <br /> i The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> tE S O NALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> I fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br /> i the recovery of analytes from the matrix spike does not fait within specified control limits due to matrix <br /> jinterference,the LCS recovery is to be used to validate the batch. <br /> e Penner <br /> ect Manager •*MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9709126.BLA c1> <br />