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Sequoia 660 Chesapeake Drive Redwood Cim CA 94063 (650) 364-9600 FAX(650)864-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX (510)988-9673 <br /> Analytical 919 Striker Avenue,Suite 9 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0 100 <br /> .......................... ........... <br /> ...................-.1.... ... <br /> .......... <br /> .............. ...... .... <br /> ........... <br /> .. <br /> Blaine Tech Services, Inc. ....Client. Project ID. Chevron 9-8632 /4111'1942 <br /> 1680 Rogers Ave. Matrix: Liquid <br /> ,.:San Jose, CA 95112 <br /> Fran Thie Work Order#: 9711065-01, 05 Reported: Dec 10, 1997'.., <br /> ........... ...... <br /> ................ <br /> ......... . ........ ... <br /> .............. ....... ......... <br /> .. ............................. ..... .. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GC120397BTEX02A GC120397BTEX02A GC120397BTEX02A GC120397BTEX02A GC120397STEX02A <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: A.Miraftab A. Miraftab A.Miraftab A. Miraftab A. Miraftab <br /> MS/MSD#: 971202201 971202201 971202201 971202201 971202201 <br /> Sample Cone.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 12/3/97 12/3/97 12/3/97 12/3/97 12/3/97 <br /> Analyzed Date: 12/3/97 12/3/97 12/3/97 12/3/97 12/3/97 <br /> Instrument I.D.#: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc. Spiked: 10 pg/L 1()p9/1- 10jug/L 30 pg/L WWI- <br /> Result: 11 11 11 32 78 <br /> MS % Recovery- 110 110 110 107 130 <br /> Dup. Result: 11 10 10 32 76 <br /> MSD % Recov.: 110 100 100 107 127 <br /> RPD: 0,0 9.19 9,5 0.0 2.6 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> .............. ................. ... ...... ...... ............................ <br /> .......................... <br /> .............. .............. <br /> ......... ..... ......... <br /> ................ <br /> ........................................... <br /> ........... ....... <br /> ........... .. ..... <br /> LCS#: BLK120397 BLK120397 BLK120397 BLK120397 BLK120397 <br /> Prepared Date: 12/3/97 12/3/97 112/3/97 12/3/97 12/3/97 <br /> Analyzed Date: 12/3/97 12/3/97 12/3/97 12/3/97 12/3/97 <br /> Instrument I.D.#: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked: 10 Pg/L 10 pg/L 10pg/L 30 pg/L 60 lig/L <br /> LCS Result: 11 10 10 31 74 <br /> LCS % Recov.: 110 100 100 103 123 <br /> IVIS/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 /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> ALYTICAL 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 /> enneinterference,the LCS recovery is to be used to validate the batch. <br /> Pe r <br /> _�nne <br /> Project Manager MSW Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 971IC65.BLA <2> <br /> 4 <br />