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Sequoia680 Chesapeake Drive Redwood City CA 94063 (659) 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 Sinker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033 / 980209-A2 <br /> 1680 Rogers Ave Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9802713-01 Reported Mar 4, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> QC Batch# GCO2-18980HBPEXB <br /> Analy Method EPA 8015M <br /> Prep Method EPA3510 <br /> Analyst D Lockhart <br /> MS/MSD # 980247201 <br /> Sample Cone N D <br /> Prepared Date 2/18/98 <br /> Analyzed Date 2/20/98 <br /> Instrument I D # GCHP4 <br /> Conc. Spiked 1000ug/L <br /> Result 690 <br /> MS % Recovery as <br /> . <br /> Dup Result 790 <br /> MSD % Reconâ–ş 79 <br /> RPD 14 <br /> RPD Limit 0-50 <br /> LCS # BLK021898 <br /> Prepared Date 2/18/98 <br /> Analyzed Date 2/20/98 <br /> Instrument I D # GCHP4 <br /> Conc Spiked 10001ig/L <br /> LCS Result 740 <br /> LCS %Recov.. 74 <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 /> QUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sarnple <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure ff <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 /> Pe gy Penner <br /> Project Manager "*MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 98802713 BLA <57 <br />