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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 /> �Ily Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Pacific Environmental Group Client Project ID 320-159 1A/9-1452, Ripon <br /> 2025 Gateway Place, Suite 440 Matra LIQUID <br /> San Jose, CA 95110 <br /> Attention Mark Sullivan Work Order# 9602869 01-04 Reported Feb 27, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> QC Batch# GCO215960HBPDQ <br /> Analy Method EPA 8015M <br /> Prep Method EPA 3520 <br /> Analyst J Minkel <br /> MS/MSD # 960266902 <br /> Sample Cone N D <br /> Prepared Date 2/15/96 <br /> Analyzed Date 2/18/96 <br /> Instrument € D # GCHP4A <br /> Cone Spiked 1000ug/L <br /> Result 86o <br /> MS %Recovery 86 <br /> Dup Result 860 <br /> MSD % Recov. 86 <br /> RPD 00 <br /> RPD Limit 0-50 <br /> LCS # BLK021596 <br /> Prepared Date 2/15/95 <br /> Analyzed Date 2/18/96 <br /> Instrument I D # GCHP4A <br /> Cone Spiked 1000ug/L <br /> LCS Result 930 <br /> LCS %Recov 93 <br /> LCS 50-150 <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 matnx <br /> interference,the LCS recovery is to be used to validate the batch <br /> Claudia Hlrotsu <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9602869 PPP a 1> <br />