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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9Z33 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <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 <br /> 1260 Graphics Drive <br /> Modesto, CA 95351-1502 <br /> Attention Drew Van Allen QC Sample Group 9808898-01-06 Reported Aug 31 1.998 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix Solid <br /> Method EPA 8015M <br /> Analyst A PORTER <br /> ANALYTE Diesel <br /> QC Batch # GC0818980HBPEXD <br /> Sample No 9808898-2 <br /> Date Prepared 8118198 <br /> 1 Date Analyzed 8119198 <br /> Instrument I D # GCHPSA <br /> Sample Cone mg/Kg 3 9 mg/Kg <br /> Cane Spiked, mg/K9 17 <br /> Matnx Spike mg/Kg 18 <br /> % Recovery 83 <br /> Matrix <br /> Spike Duplicate, mg/Kg 17 <br /> % Recovery 77 <br /> Relative % Difference 7 5 <br /> RPD Control Limits 0-50 <br /> LCS Batch# BLK081898DS <br /> Date Prepared 8118/98 <br /> Date Analyzed 8119/98 <br /> Instrument I D # 133CHP5A <br /> Cone Spiked mg/Kg 17 <br /> Recovery, mg/Kg 15 <br /> LCS % Recovery 88 <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 /> SEQUOIA ANALYTICAL preparation and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> r 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 /> ?,X �� interference the LCS recovery is to be used to validate the batch <br /> yuan�K ,, <br /> Project Manager <br />