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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 Sinker Avenue Swtc 8 Sacramento C4 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Pacfic Environmental Group Client Project ID 320-159 1A/9-1452, Main St <br /> 2025 Gateway Place, Suite 440 Matrix SOLID <br /> San Jose, CA 95110 <br /> Attention R DeJung Work Order# 9601762 21-28 Reported Jan 26, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> QC Batch# GC0111960HBPEXD <br /> Analy. Method EPA 8015 Mod <br /> Prep Method EPA 3550 <br /> Analyst J Minkel <br /> MS/MSD# 960167203 <br /> Sample Conc 14 <br /> Prepared Date 1/11/96 <br /> Analyzed Date 1/12/96 <br /> Instrument I D # GCHP4A <br /> Conc Spiked 25 mg/kg <br /> Result 35 <br /> MS % Recovery 84 <br /> Dup Result 36 <br /> MSD % Recov 88 <br /> RPD 30 <br /> RPD Limit 0-50 <br /> LCS# BLK011196 <br /> Prepared Date 1/11/96 <br /> Analyzed Date 1/12/96 <br /> Instrument I.D # GCHP4A <br /> Conc Spiked 25 mg/kg <br /> LCS Result 24 <br /> LCS % Recov 96 <br /> LCS 38-122 <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 /> EQUOIA 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 /> /r'3kBrucie Fletcherr <br /> Protect Manager **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9601762 PPP <4> <br />