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„ Sequoia 680 Chesapeake Drive Redwood Cary,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 /> ,!D— Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> i <br /> Nov N{n{ s rn r r .vv nh' M h <br /> Blaine Tech Services, Inc ClientProjectID Chevron 9-8264 f 970107-Z2 <br /> 1680 Rogers Avenue Matrix Liquld <br /> ;San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9701261-02-04 Reported Jan 16, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: G0010997BTEX17A GCO10997BTEX17A GC0109978TEX17A GCO10997BTEX17A <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# 970125601 970125601 970125601 970125601 <br /> Sample Cone • N D N D N D N D <br /> Prepared Date. 1/9/97 1/9/97 1/9/97 1/9/97 <br /> Analyzed Date: 1/9/97 1/9/97 1/9/97 1/9/97 <br /> Instrument I D #: GCHP17 GCHP17 GCHP17 GCHP17 <br /> Cone Spiked: 10pg/L 10pg/L 10pg/L 30Ng/L <br /> Result. 99 97 97 29 <br /> MS %Recovery 99 97 97 97 <br /> Dup Result. 91 91 90 27 <br /> MSD % Recov : 91 91 90 90 <br /> RPD- 84 64 75 71 <br /> RPD Limit. 0.25 0.25 0.25 0-25 <br /> LCS #: BLK010997 BLK010997 BLK010997 BLK010997 <br /> Prepared Date. 1/9/97 1/9/97 1/9/97 1/9/97 <br /> Analyzed Date. 1/9/97 1/9/97 1/9/97 1/9/97 <br /> Instrument I D #: GCHP17 GCHP17 GCHP17 GCHP17 <br /> Cone. Spiked: 10Ng/L 10pg/L 10ug/L 30pg/L <br /> LCS Result. 89 86 84 25 <br /> LCS % Recov. 89 86 84 83 <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 /> Q OI 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 R <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 /> eg Penner <br /> 0 ct Manager **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 9701261 BLA <4> <br />