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July 12, 2002 Lab ID STK233284 <br /> Keystone Automotive ndustries, Inc. Customer : 3-12628 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Conc. QC Data DQO Note <br /> Metals <br /> Zinc 3050B 06/27/2002:A209 LCS mg/kg 40.00 99.3% 85-115 <br /> PDS mg/kg 40.00 91.3% 75-125 <br /> MS mg/kg 40.00 98.0% 75-125 <br /> (SP 205892-01) MSD mg/kg 40.00 82.9% 75-125 <br /> MSRPD mg/kg 9.4% 520 <br /> 6010B 06/28/2002:A 10-CCB mg/L ND <0.02 <br /> 10-CCV mg/L 0.5000 97.7% 90-110 <br /> I1-CCB me/L ND <0.02 <br /> 11-CCV mg/L 0.5000 97.2% 90-110 <br /> Definitions <br /> Blank Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> LCS Laboratory Contr I Standard/Sample - Prepared to verify that the preparation process is not affecting analyte <br /> recovery. <br /> PDS Post Digestion S ike (ICP/GFAA) <br /> MS/MSD Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication o <br /> how that samplt matrix affects analyte recovery. <br /> CCB Continuing Calibiation Blank - Analyzed to verify the instrument baseline is within criteria. <br /> CCV Continuing Calib ation Verification - Analyzed to verify the instrument calibration is within criteria. <br /> ND Non-detect - Result was below the DQO listed for the analyte. <br /> DQO Data Quality Ob ective - This is the criteria against which the quality control data is compared. <br /> STK233284: Quality Control Page 2 <br />