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Sequoia 680 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 /> 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 9-8632 / 961105-C2 <br /> 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> Attention Jim Keller Work Order# 9611260-04 Reported Nov 23, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> QC Batch# G131112MHBPEM <br /> Analy Method EPA 8015M <br /> Prep Method EPA 3510 <br /> Analyst B Sullivan <br /> MS/MSD# 961125802 <br /> Sample Conc N D <br /> Prepared Date 11/12/96 <br /> Analyzed Date 11/16/96 <br /> Instrument I D # GCHP5 <br /> Conc. Spiked 1000 pg/L <br /> Result 1200 <br /> MS % Recovery 120 <br /> Dup Result 1100 <br /> MSD % Recov 110 <br /> RPD 87 <br /> RPD Limit 0-50 <br /> LCS# BLK111296 <br /> Prepared Date- 11/12/96 <br /> Analyzed Date 11/16/96 <br /> Instrument I D # GCHP5 <br /> Conc Spiked 1000jig/L <br /> LCS Result 1600 <br /> LCS%Recov .. 160 <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 /> SEQUOIA ANALYTICAL 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 /> Peggy Penner <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9611260 BLA <11> <br />