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Sequoia680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget 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 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-8264 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9802909-03-04 Reported Feb 27, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> QC Batch# GCO219980HBPEXC <br /> Analy Method EPA 8015M <br /> Prep Method EPA 3510 <br /> Analyst A-Porter <br /> MS/MSD# 980290903 <br /> Sample Cone N D <br /> Prepared Date 2/19/98 <br /> Analyzed Date 2/20/98 <br /> Instrument I D # GCHP19 <br /> Cone Spiked 1000Ng/L <br /> Result 860 <br /> .MS % Recovery as <br /> Dup Result 880 <br /> MSD % Recov 88 <br /> RPD 23 <br /> RPD Limit 0-50 <br /> LCS # BLK021998 <br /> Prepared Date 2/19/98 <br /> Analyzed Date 2/20/98 <br /> Instrument I D # GCHP19 <br /> Conc Spiked 1000 pg/L <br /> LCS Result 770 <br /> LCS % Recov n <br /> 50-150 <br /> LCS 60-140 <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 /> E lA N LYTICAL 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 /> P ggy ginner <br /> Pole Manager **MS=Matrix Spike MSD=MS Duplicate,RPD=Relative% Difference 9802909 BLA <9-> <br />