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cy Sequoia 660 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 /> Pacific Environmental Group Client Project ID 310-097 1 B,Tracy <br /> 2025 Gateway Place, Suite 440 Matrix LIQUID <br /> San Jose, CA 95110 <br /> Attention Joe Muzzio Work Order# 9701516 01, 02 Reported Jan 20, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Diesel <br /> QC Batch#: GC-0115970HBPEXA <br /> Analy Method EPA 8015M <br /> Prep. Method EPA 3510 <br /> Analyst. B Sullivan <br /> MS/MSD # 970151601 <br /> Sample Conc 500 <br /> Prepared Date: 1/15/97 <br /> Analyzed Date: 1/15/97 <br /> Instrument I D # GCHP4A <br /> Conc Spiked 1000 ug/L <br /> Result- 1400 <br /> MS % Recovery 90 <br /> Dup. Result 1500 <br /> MSD% Recov 100 <br /> RPD: 69 <br /> RPD Limit. 0-50 <br /> LCS BLK011597S <br /> Prepared Date: 1/15/97 <br /> Analyzed Date: 1/15/97 <br /> Instrument 1 D # GCHP4A <br /> Conc. Spiked 1000 ug/L <br /> LCS Result, 1200 <br /> LCS % Recov .. 120 <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 H <br /> the recovery of analytes from the matnx 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 /> Tod Granicher <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9701516 PPP <3> <br />