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Sequoia680 Chesapeake Drive Redwood City,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 /> �ill7 Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> r , <br /> ,Blaine Tech Services, Inc x Client Project IDx Chevron 9-2033 /960822-Gi <br /> ,985 Timothy Drive Matrix Liquid <br /> ,San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9608E47-01, 02 Reported Sep 11, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: GC082896BTD(21A GC082&%BTEX2IA GC082896BTEX21A GC082896BTEX2IA <br /> Analy. Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. D Jirsa D Jirsa D Jirsa D Jusa <br /> MS/MSD # 960BA7202 96oaA7202 960aA7202 960BA7202 <br /> Sample Conc: N D N D N D N D <br /> Prepared Date 8/28/96 8/28/96 8/28/96 8/28/96 <br /> Analyzed Date 8/28/96 8/28/96 8/28/96 8/28/96 <br /> Instrument I D # GCHP21 GCHP21 GCHP21 GCHP21 <br /> Conc. Spiked 10 pg/L 10 pg/L 10 pg/L 30 pg/L <br /> Result. 11 10 11 32 <br />•MS%Recovery* 110 100 110 107 <br /> Dup. Result: 11 11 11 33 <br /> MSD % Recov ,, 110 110 110 110 <br /> RPD: 00 95 00 31 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> LCS#: BLK082896 BLK082B96 BLK082896 BLK082896 <br /> Prepared Date. 8/28/96 8/28/96 8/28/96 8/28/96 <br /> Analyzed Date: 8/28/96 8/28/96 8/28/96 8/28/96 <br /> Instrument I D #' GCHP21 GCHP21 GCHP21 GCHP21 <br /> Conc Spiked: 10pg/L 10pg/L 10pg/L 30pg/L <br /> LCS Result: 10 99 10 30 <br /> LCS % Recov.: 100 99 100 100 <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 /> i SE UOIA ALYTICAL pre ation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> rtified with known quantities of specific compounds and subjected to the entire analytical procedure N <br /> the recovery of analytes from the matrix spike does not fall within specified control limas due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Pe n <br /> Prol t anagen **MS=Matnx Spike, MSD=MS Duplicate,RPD=Relative%Difference 960SE47 BLA <6> <br />