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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (415) 364-9600 FAX (415) 364-9233 <br /> 404 N. Wiget Lane Walnut Creek, CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> 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 9-0557/951116-Z3 <br /> 985 Timothy Drive Matrix: Liquid <br /> San Jose, CA 95133 <br /> Attention: Jim Keller Work Order #: 9511 D05-03-04, 08-07 Reported: Nov 29, 1995' <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: GC111795BTEX03B GC111795STEX03B GC111795BTEX03B GC1 1 1795BTEX038 <br /> Analy. Method: EPA 8020 EPA 6020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J.woo J.Woo J.Woo J.woo <br /> MS/MSD #: 951148101 951148101 951148101 951148101 <br /> Sample Conc.: N.D. N-D. N.D. N.D. <br /> Prepared Date: 11/17/95 11/17/95 11/17/95 11/17/95 <br /> Analyzed Date: 11/17/95 11/17/95 11/17/95 11/17/95 <br /> Instrument I.D.#: GCHP3 GCHP3 GCHP3 GCHP3 <br /> Cone. Spiked: 10ug/L 10ug/L 10ug/L 30u9/L <br /> Result: 9.5 9.3 9.2 27 <br /> MS % Recovery: 95 93 92 90 <br /> Dup. Result: 10 10 10 30 <br /> MSD % Recov.: 100 100 100 100 <br /> i <br /> RPD: 5.1 7.3 8.3 11 <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> LCS #: BLK111795 BLK111795 BLK111795 BLK111795 <br /> Prepared Date: 11/17/95 11/17/95 11/17/95 11/17/95 <br /> Analyzed Date: 11/17/95 11/17/95 11/17/95 11/17/95 <br /> Instrument I.D.#: GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc. Spiked: 10ug/L 10 p9/1- 10ug/L 30ug/L <br /> LCS Result: 10 10 10 30 <br /> LCS % Recov.: 102 102 101 101 <br /> MS/MSU-- <br /> LCS <br /> MLCS 71-133 72-128 72-130 71-120 <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 /> 7gy <br /> I N LYTICAL 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 rec6very 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 /> enner <br /> Project Manager **MS=Matrix Spike, MSD MS Duplicate, RPD=Relative% Difference 9511D05.BLA <3> <br />