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May 30, 2006 Lab ID : STK634035 <br /> Alpine Packing Company Customer : 3-2839 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Conc. QC Data DQO Note <br /> Wet Chem <br /> Conductivity 25108 05/18/2006:A 00-CCV umhos/cm 1006 100% 95-105 <br /> Nitrate 300.0 05/17/2006:B215 LCS mg/L 20.00 99.5% 90-110 <br /> MS mg/L 400.0 105% 94-111 <br /> (STK634020-13) MSD mg/L 400.0 105% 94-111 <br /> MSRPD mg/L 0.6% 52.71 <br /> 300.0 05/17/2006:A 00-ICB ppm ND <0.4 <br /> 00-CCB ppm ND <0.4 <br /> 00-ICV ppm 40.00 102% 90-110 <br /> 00-CCV ppm 20.00 99.1% 90-110 <br /> pH 4500-H B 05/16/2006:5346 Dup units 0.1% 4.80 <br /> 4500-H B 05/16/2006:S 00-CCV units 8.000 100% 95-105 <br /> Solids, 'rotal Dissolved (TDS) 2540C 05/19/2006:A235 Blank mg/L ND <40 <br /> LCS mg/L 1000 102% 90-110 <br /> Dup mg/L 1.2% 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 /> Definitions <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 /> 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 /> 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 /> <�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 /> STK634035: Quality Control Page 2 <br />