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Sequoia 680 Chesapeake Drive Rcdwood City,CA 94(0) (650) 364-9600 FAX(650)364-9233 <br /> (D— 404 N, Wiget Lane Walnut Creek,CA 9459. (510) 988-9600 FAX 510 <br /> ( )988-9673 <br /> 'War Analytica 819 Striker Avenue,Suite 8 Sacramento, CA 95834 (916) 921-9600 FAX (916)92 1-0 1 Go <br /> .'Blaine Tech Services, Inc. Clien'i ProjeCt'lli-­ Chevron 9-4084 980210-D1 <br /> :1680 <br /> 80210 Di1680 Rogers Ave. Matrix. Liquid <br /> .::San Jose, CA 95112 <br /> .".:Attention: Fran Thie. Work Order #: 9802716-02-03 Reported: Mar 5, 199 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GCO22398802007A GCO22398802007A GCO22398802007A GCO22398802007A GCO22398802007A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: S.L. S.L. S.L. S.L. S.L. <br /> IVIS/MSD #: 98020508 98020508 98020508 98020508 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Prepared Date'. 2/23/98 2/23/98 2/23/98 .2/23/98 <br /> Analyzed Date: 2/23/96 2/23/98 2/23/08 2/23/98 <br /> Instrument I.D.#: GC7 GC7 G07 G07 <br /> Conc. Spiked: 20 juglL 20 yg/L 20,ug/L 60)ug/L <br /> Result: 19.6 19.1 18.7 59.7 <br /> IVIS % Recovery: 98 96 94 100 <br /> Dup. Result: 19 18.9 18.9 59.5 <br /> MSD % Recov.: 95 95 95 99 <br /> RPD- 3.1 111 1.1 0.34 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> ..............X.. ...j. <br /> .............. <br /> ......... .............. <br /> ...... . ........................ ... <br /> ........... <br /> ................ <br /> .................. <br /> ............... <br /> LCS #: LCS022398 LCS022398 LCS022398 LCS022398 LC8022398 <br /> Prepared Date: 2/23/98 .2/23/98 2/23/98 2/23/98 2/23/98 <br /> Analyzed Date: 2/23/98 <br /> 2/23/98 2/23/98 2/23/98 2/23/98 <br /> Instrument I.D.#: GC7 GC7 GC7 GC7 GC7 <br /> Conc. Spiked: 20 pg/L 20,ug/L 20 pg/L 60 pg/L 500 pg/L <br /> LCS Result: 21.4 21.5 21.9 69.1 473 <br /> LCS % Recov.: 107 108 110 115 95 <br /> MS/MSD 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 70-130 <br /> Control Limits <br /> Please Note: <br /> SEQUOIA ANALYTICAL The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents. <br /> Elap # 4 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 /> 'a Z <br /> the recovery of analytes from the matrix spike does not fail within specified control limits due to matrix <br /> ,interference,the LCS recovery is to be used to validate the batch. <br /> 99 enner <br /> ../,;POoject Manager MS=Matrix Spike, MSD=MS Duplicate,SPO=Relative%Difference 9802716.BLA <2> <br /> 4Mr, <br />