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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707}792-1865 FAX(707)792-0342 <br /> ATC Associates, Inc Client Project ID Continental Grain 62500 0001 <br /> 1260 Graphics Drive Matrix Liquid <br /> Modesto, CA 95351-1502 <br /> Attention Drew Van Allen Work Order# 9808A13 -01-03 Reported Sep 9, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Lead <br /> QC Batch# ME0818987000MDA <br /> Analy Method EPA 239 2 <br /> Prep Method EPA 3020 <br /> Analyst J Jencks <br /> MS/MSD# 9808A1301 <br /> Sample Cone N D <br /> Prepared Date 8/18/98 <br /> Analyzed Date 8/19/98 <br /> Instrument I D # MTJA3 <br /> ' Cone Spiked 0 050 mg/L <br /> Result 0 053 <br /> WMS %Recovery 106 <br /> Dup. Result 0 053 <br /> MSD% Recov 106 <br /> ' RPD 00 <br /> RPD Limit 0-20 <br /> LCS # LCS081898 <br /> Prepared Date 8/18/98 <br /> Analyzed Date 8/19/98 <br /> Instrument I D # MTJA3 <br /> ' Cone Spiked 0 050 mg/L <br /> LCS Result 0 059 <br /> LCS% Recov 118 <br /> 75-125 <br /> LCS 80-120 <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 /> 1 <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 /> Imyal <br /> OjeCt Ma ger **MS=Matrix Spike,MSD=MS Duplicate, RPD=Relative%Difference 980SA13AAA <1> <br />