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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> tIN 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> I&P Analytical 819 Sinker Avenue,Suite s Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Pacific Environmental Group Client Project ID 920-119 1A/9-6171, Stockton <br /> 2025 Gateway Place, Suite 440 Matrix SOLID <br /> San Jose, CA 95110 <br /> Attention Tim Anensen Work Order# 9712E29 01-07 Reported Jan 12, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte PCB 1260 <br /> QC Batch# GC122897OPCBEXA <br /> Analy Method EPA 8080 <br /> Prep Method EPA 3550 <br /> Analyst J Miller <br /> MS/MSD # 9712E2907 <br /> Sample Conc N D <br /> Prepared Date 12/26/97 <br /> Analyzed Date 12/26/97 <br /> Instrument I.D.# GCHP12 <br /> Conc Spiked 83ug/Kg <br /> Result 85 <br /> MS % Recovery 102 <br /> Dup Result 97 <br /> MSD % Recov. 117 <br /> RPD 13 <br /> RPD Limit 0-50 <br /> LCS #. BLK122697 <br /> Prepared Date 12/26/97 <br /> Analyzed Date 12/26/97 <br /> Instrument I D # GCHP12 <br /> Conc. Spiked 83 Ng/Kg <br /> LCS Result 73 <br /> LCS % Recov. 88 <br /> LCS <br /> Control Limits 40-140 <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 K <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 /> Tod Granicher <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9712E29 PPP <3> <br /> d� <br />