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y Sequoia 680 Chesapeake Drive Redwood Cary,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> L 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> lco Analytical 819 Stnker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc ry r. client Project ID Chevron 9-8264/'9761167-22 <br /> i 1680 Rogers Avenue Matrix Liquid <br /> <'San Jose, CA 95112 <br /> -Attention Fran Thle Work Order# 9701261-05 Reported Jan 16, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GC010897BTEX02A GCO10897BTEX02A GC010897BTEX02A GC010897BTEX02A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst A.Miraftab A. Miraftab A.Miraftab A.Miraftab <br /> MS/MSD #- 97012H7404 97012H7404 97012H7404 97012H7404 <br /> Sample Cone . N D N D N D N D <br /> Prepared Date- 1/8/97 1/8/97 1/8/97 1/8/97 <br /> Analyzed Date. 1/8/97 1/8/97 1/8/97 1/8/97 <br /> Instrument I D #: GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone Spiked- 10ug/L 101jg/L 10 fig/L 30pg/L <br /> Result- 89 89 90 29 <br /> MS % Recovery. 89 89 90 97 <br /> Dup Result 85 84 85 28 <br /> MSD % Recov : 85 84 85 93 <br /> RPD: 46 58 57 35 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> LCS # BLK010897 BLK010897 BLK010897 BLK010897 <br /> Prepared Date. 1/8/97 1/8/97 1/8/97 1/8/97 <br /> Analyzed Date 1/8/97 1/8/97 1/8/97 1/8/97 <br /> Instrument I D #: GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone Spiked: 10ug/L 10ug/L 10ug/L 30pg/L <br /> LCS Result 91 91 91 30 <br /> LCS % Recov - 91 91 91 100 <br /> 60.140 60.140 60-140 60-140 <br /> LCS 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 /> U 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 /> interference,the LCS recovery is to be used to validate the batch <br /> ea enner <br /> ct Manager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9701261 BLA <5> <br />