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• December 15, 2004 Lab ID STK438223 <br /> Micheline Doyle Kipf Customer 3-14626 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Conc QC Data DQO Note <br /> Metals <br /> Nickel 2007 11/30/2004 A 01-CCB mg/L ND <0 01 <br /> 01-CCV mg/L 1000 104% 90-110 <br /> 02-CCB mg/L ND <0 01 <br /> 02-CCV mg/L 1000 105% 90-1I0 <br /> Zinc 3010A 11/29/2004 A207 Blank mg/L ND <0 02 <br /> LCS mg/L 2000 103% 85-115 <br /> PDS mg/L 2000 104% 75-125 <br /> MS mg/L 2000 993% 75-125 <br /> (SP 412225-01) MSD mg/L 2000 103% 75-125 <br /> MSRPD mg/L 3 9% 520 0 <br /> 2007 11/30/2004 A 01-CCB mg/L ND <0 02 <br /> 01-CCV mg/L 1000 104% 90-110 <br /> 02-CCB mg/L ND <0 02 <br /> 02-CCV mg/L 1000 106% 90-110 <br /> Wet Chem <br /> Non Polar Material (SGT HEM) 5520B 12/09/2004 A259 Blank ppm ND <3 <br /> LCS ppm 20 13 97 1% 80-120 <br /> BS ppm 20 13 100% 80-120 <br /> BSD ppm 20 13 96 1% 80-120 <br /> BSRPD ppm 4 1% 520 0 <br /> Oil and Grease 1664 12/06/2004 A253 Blank mg/L ND <3 <br /> LCS mg/L 4005 925% 76-106 <br /> BS mg/L 4005 894% 74-106 <br /> BSD mg/L 4005 906% 74-106 <br /> BSRPD mg/L 14% 523 1 <br /> pH 4500-H B 11/22/2004 5346 Dup units 02% 4 80 <br /> 4500-H B 11/22/2004 S 00 CCV units 8 000 101% 95-105 <br /> 01-CCV units 8 000 994% 95-105 <br /> Defautions <br /> Blank Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples <br /> LCS Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte <br /> recovery <br /> PDS Post Digestion Spike (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 sample matrix affects analyte recovery <br /> BS/BSD Blank Spikes - A blank is spiked with a known amount of analyte It is prepared to verify that the preparation <br /> process is not affecting analyte recovery <br /> Dup Duplicate Sample - A random sample with each batch is prepared and analyzed in duplicate The relative percent <br /> difference is an indication of precision for the preparation and analysts <br /> CCB Coannutag Calibration Blank - Analyzed to verify the instrument baseline is within criteria <br /> CCV Continuing Calibration 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 Objective - This is the criteria against which the quality control data is compared <br /> Report continued on next page <br /> STK438223 Quality Control Page 2 <br />