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U <br /> March 10, 2006 Lab ID : STK631392 <br /> Luhdorff & 5calmanini, Consulting Eng, Customer : 3-12023 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Wet Chem <br /> Sulfate 300.0 02/1612006:A215 MSRPD mg/L 2.0% :92.29 <br /> QAMDL mg/L 1.000 0.37 1 <br /> 300.0 02/16/2006:A 004CB ppm 50.48 <1 <br /> 00-CCB ppm 51.26 <1 220 <br /> 00-ICV ppm 100.0 100% 90-110 <br /> 00-CCV ppm 50.00 102% 90-110 <br /> Total Alkalinity (as CaCO3) 2320B 02117/2006:A202 Dup mg/L 0.4% 9.03 <br /> 02/2712006:6202 Dup mg/L 0.2% 9.03 <br /> 23240 02117/2006:A 00-CCV mg/L 2349 93.8% 90-110 <br /> 01-CCV mg/L 234.9 94.0% 90-110 <br /> 02127/2006:A 01-CCV mg/L 234.9 92.5% 90-110 a <br /> 02-CCV mg/L 234.9 92.2% 90-110 <br /> Total Dissolved Solids 2540C 02/17/2006:A235 Blank mg/L ND <40 <br /> LCS mg/L 1000 96.3% 90-110 <br /> Dup mg/L 4.3% 10.0 <br /> Explanations <br /> 220 The absolute value of the CCB was greater than the DQO. However, all results were either five times <br /> greater than the CCB concentration or ND relative to the PQL. <br /> 408 Matrix Spike(MS) or Post Digestion Spike(PDS) has no Acceptance Range (DQO) because of high analyte <br /> concentration in the sample. Data was accepted based on the LCS or CCV recovery. + <br /> Defuzitions <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 /> MSIMSD 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 /> 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 analysis. <br /> MDL Method Detection Level <br /> ICB Initial Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br /> ICV Initial Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br /> CCB Continuing 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 /> <'A High Sample Background - Spike concentration was less than one forth of the sample concentration. <br /> DQO Data Quality Objective - This is the criteria against which the quality control data is compared. <br /> STK631392; Quality Control Page 4 a <br />