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June 20, 2006 <br /> Lab YD STK6344 34 <br /> Luhdorff & Scahnanuu Consulting Eng. <br /> Customer . <br /> 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 06/0112006:A215 MS mg/L 1000 134% 96-113 435 <br /> (STK634423-01) MSD mg/L 1000 . 118% 96-113 435 <br /> MSRPD mg/L 12.0% 52.29 <br /> 06101/2006:B215 LCS mglL 50.00 105% 90-110 <br /> MS mg/L 1000 113% 96-113 <br /> (STK634414-04) MSD mg/L 1000 114% 96-113 435 <br /> MSRPD mg/L 1.0% 52.29 <br /> 300.0 06/01/2006:A 00-ICB ppm ND <1 <br /> 00-CCB ppm ND <1 <br /> 00-ICV ppm 100.0 106% 90-110 <br /> 00-CCV ppm 50.00 102% 90-110 <br /> Total Alkalinity (as CaCO3) 2320E 0610612006.A202 Dup mg/L 1.2% 9.03 <br /> 23208 06/06/2006:A 00-CCV mg/L 234.9 95.6' 90-110 <br /> 01-CCV mg/L 234.9 96.0% 90-110 <br /> Total Dissolved Solids 25400 06/02/2006:A235 Blank mg/L ND <40 <br /> LCS mg/L 1000 97.7% 90-110 <br /> Dup mg1L 1.3% 10.0 <br /> Explanations <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 /> 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. <br /> a <br /> Definitions <br /> f 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 /> MS/MSD Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication a <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 /> 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 /> <k 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 /> STK634414: Quality Control Page 4 <br />