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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> 404 N.Wiset Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0 100 <br /> .......... <br /> Blaine Tech,Servces, Inc. Client Project ID: Chevron 9-0557 9705-20-Hl <br /> 1680 Rogers Avenue Matrix: Liquid <br /> '::San Jose CA 95112 <br /> ..,./kttention: Fran Thie Work Order#: 97051317 -01, 05 Reported: Jun 5, 1997-*'-'.?- <br /> .. .. .... <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> OC Batch#: GCO52797BTEX02A GC052797BTEX02A GC052797BTEX02A GCO52797BTEX02A GC0527978TEK02A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method: EPA 5030 EPA 5= EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: D.Jima D.Jirsa D.Jirsa D.Jirsa D.Jirsa <br /> MS/MSD #: 9705B1704 9705B1704 970SB1704 9705B1704 9705B1704 <br /> Sample Conc.: N.D. N.D. N.D. N.D. N.D. <br /> Prepared Date: 5/27/97 5/27/97 5/27/97 6/27/97 5/27/97 <br /> Analyzed Date: 5/27/97 5/27/97 5/27/97 5/27/97 5/27/97 <br /> Instrument I.D.#: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc. Spiked: lopg/L 10lig/L lopg/L 30 pg/L 60 jig/L <br /> Result: 8.7 8.9 8.5 28 67 <br /> MS %Recovery: a7 89 85 93 112 <br /> Dup. Result: 9.0 8.9 8.9 29 69 <br /> MSD % Recov.: 90 89 89 97 115 <br /> RPD: 3.4 0.0 4.6 3.5 2.9 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> ........... <br /> ..........I <br /> .......... <br /> LCS #: BLK052797 BLK052797 BLK052797 BLK052797 BLK052797 <br /> Prepared Date: 5/27/97 5/27/97 5/27/97 5/27/97 5/27/97 <br /> Analyzed Date: 5/27/97 5/27/97 5/27/97 5/27/97 5/27/97 <br /> Instrument I.D.#: GCHP2 GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc. Spiked: 10pg/L 10pg/L 10lig/L 30 pg/L 60pg/L <br /> LCS Result: 8.9 9.0 8.8 28 63 <br /> LCS% Recov.: 89 90 88 93 105 <br /> MS/MSD 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 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 /> A 4ALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> 4r/ 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 /> linterference,the LCS recovery is to be used to validate the batch. <br /> Pe y nneer <br /> Pro tctManager MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9705B17.BLA .41> <br />