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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 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)92t-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> ATC Associates, Inc Client Project ID Contlnential Grain 62500 0001 <br /> 1117 Lane Palm Avenue <br /> Modesto, CA 95351-1502 <br /> Attention Drew Van Allen QC Sample Group 9811E49-01-03 Reported Dec 2, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix Liquid <br /> Method EPA 8015A <br /> Analyst A PORTER <br /> ANALYTE Diesel <br /> QC Batch # GC1123980HBPEXY <br /> Sample No 9811 D82-01 <br /> Date Prepared 11/23/98 <br /> Date Analyzed 11/30/98 <br /> Instrument I D # GCHP4A <br /> Sample Conc , uglL 73 <br /> Conc Spiked, uglL 1000 <br /> Matrix Spike uglL 930 <br /> 0 % Recovery 81 <br /> Matrix <br /> Spike Duplicate, uglL 890 <br /> % Recovery 82 <br /> Relative % Difference 48 <br /> RPD Control Limits 0-50 <br /> LCS Batch# BLK112398YS <br /> Date Prepared 11/23/98 <br /> Date Analyzed 11/30/98 <br /> Instrument I D # GCHP4A <br /> Conc Spiked, ug/L 1000 <br /> Recovery, uglL 840 <br /> LCS % Recovery 84 <br /> Percent Recovery Control Limits <br /> MS/MSD 50150 <br /> LCS 60-140 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> Please Note <br /> The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents <br /> INEQUOIA 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 recoveryrs to be used to validate the batch <br /> Kayo yai <br /> lect Ma er <br />