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Sequoia 680 Chesapeake Drive Rcdwood City, CA 94063 (415) 364-9600 FAX(415) 364.9233 <br /> 404 N.Wiget line Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988.9673 <br /> Analytical 819 Striker Avenue,Scute 8 Sacramento,CA 95834 (916) 921.9600 FAX(916) 921-0100 <br /> :,: .Y:n,.::.�.,p>::Y.hyr -^'ti::..,::.,w.:w..,;.:a:x;,:::.•:::,;,:}wti`r'4:... :,,.-::,-w-:..:. .......... <br /> G.dw•rcww}:o3o-7`rrw:::.. <br /> `Blaine Tech Services, Inc. Client Project ID: Chevron 9-0557/960516-A3 < <br /> <985 Timothy Drive Matra: Liquid <br /> �{�San Jose, CA 95133 �" <br /> ep <br /> Rorted: May 29 19964 <br /> � Jim Keifer Work Order#: 9605C27 -01 .. .,. <br /> ,.Attention: ... ...,.::::...::::::.:. NrA:.:., •!�.]�<::_.:,:•:..::.::::::.:..:.:::r....w�.... +- <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GCO52296BTEXITA GC052296BTEX17A G=2296BTEX17A GCO52296BTEX17A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J.Woo J.Woo J.Woo J.Woo <br /> MS/MSD #: 9605A6004 9605AS004 9605ABW4 9605A6004 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Prepared Date: 5/22/96 5/22/96 5/22/96 5/22/96 <br /> Analyzed Date: 5/22/96 5/22/96 5/22/96 5/22/96 <br /> Instrument I.D.#: GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc. Spiked: 10pg/L 10Mg/L 10Ng/L 30Ng/L <br /> Result: 9.8 9.6 9.5 28 <br /> MS % Recovery: 98 96 95 93 <br /> Dup. Result: 10 10 9.8 29 <br /> MSD % Recov.: 100 100 98 97 <br /> RPD: 2.0 4.1 3.1 3.5 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> LCS #: BLK052296 BLK052296 BLK052296 BLK052296 <br /> Prepared Date: 5/22/96 5/22/96 5/22/96 5/22/96 <br /> Analyzed Date: 5/22/96 5/22/96 5/22/96 5/22/96 <br /> Instrument I.D.#: GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc.Spiked: 10Ng/L 10Ng/L 10ug/L 30ug/L <br /> LCS Result: 9.7 9.6 9.7 29 <br /> LCS %Recov.: 97 96 97 97 <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 /> 7jeI 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 /> ner <br /> na **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference g6o5C27.BLA <1> <br />