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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 1 G) 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988.9673 <br /> %W Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921.0100 <br /> "'Blain ech r <br /> eNLCeS Irl e . ._:... <br /> C. :.............:..::.................:.:..,_.......:::. <br /> Client Project iD: Chevron 9-0557 970902-F1 "c <br /> 1680 Rogers Ave. Matrix: Liquid <br /> San Jose, CA 95112 <br /> Attention: Fran Thie Work Order#: 9709102 .--..-.0..1.. 03-04 Reported: Se x <br /> QUALITY CONTROL DATA REPORT <br /> Ana Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> OC Batch#: GC090897BT1_X17A GC090897BTEX17A GCO90897BTEX17A GCO90897STEX17A GCO90897BTEX17A <br /> Anaiy. Method: EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 8020 EPA 801 <br /> EPA 5030 EPA 80300 <br /> Analyst: A.Miraftab A Miraftab A.Miraftab A. Miraftab <br /> A-MiraftabMS/MSD#: 970905002 970905002 970905002 9709970905002 <br /> Sample Cone.: N.D. ND N.D. N.D. N.D.Prepared Date: 9/8/97 9/8/97 <br /> 9/8/97 9/8/97 9/8/97 <br /> Analyzed Date: 9/8/97 9/8/97 9/8/97 9/8/97 9/8/97 <br /> Instrument I.D.#: GCHP17 GCHP17 GCHP17 <br /> Cone. Spiked: 10Erg/L 10 GCHP17 <br /> GCHP17 <br /> u9/L- 1009/L 300pg/Lp9/L- 60 u9/L- <br /> Result: 10 i0 9.9 30 <br /> MS % Recovery: 100 100 57 <br /> 99 100 95 <br /> Dup. Result: 12 11 11 <br /> MSD % Recov.: 120 34 65 <br /> 110 110 113 <br /> 108 <br /> RPD: 18 9.5 11 13 <br /> RPD Limit: 0-2513 <br /> 0-25 0-25 0-25 <br /> 0-25 <br /> LCS #: BLK090897 BLK090897 BLK090897 BLK090897 <br /> BLK090897 <br /> Prepared Date: 9/8/97 9/8/97 9/8/97 9/8/97 9/8/97 <br /> Analyzed Date: 9/8/97 9/8/97 9/8/97 9/8/97 <br /> Instrument I.D.#: GCHP17 GCHP17 GCHP17 GCHP17 9/8/97 <br /> Cone. Spiked: 10pg/L10 GCHP17 <br /> N9/L 10 p8/L- 30p4/L <br /> 60 N9/L <br /> LCS Result: 10 10 10 <br /> LCS % Recov.: 104 31 59 <br /> 100 100 103 <br /> 98 <br /> 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70.130 6x140 <br /> Control Limits 70-130 7x130 70-130 <br /> Please Note: <br /> The LCS is a control sample of known,Interferent-free matrix that is analyzed using the same reagents, <br /> A ANALYTICAL 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. ft <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> g <br /> Pe interference,the LCS recovery is to be used to validate the batch. <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> 9709102.BLA <I> <br />