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September 07, 2006 Lab ID : STK636936 Alpine Packing Company Customer : 3-2839 Quality Control - Inorganic tituent Method Date/ID Type Units Conc. QC Data DQO Note «et' Chem Conductivi 251013 08/15/2006:A 00-ICV umbos/cm 10000 10196 95-105 00-CCV umhos/cm 1006 101% 95-105 Nitrate + Nitrite as N 450ONO3F 08118/2006:13220 MS mg/L 4.000 69.2% 3-211 (SP 608221-01) MSD mg/L 4.000 . 71.1% 3-211 MSRPD mg/L 2.5% 535.0 08/22/2006:A220 MS mg/L 4.000 62.3% 3-211 (SP 608331-02) MSD mg/L 4.000 60.4% 3-211 MSRPD mg/L -3.1% 535.0 450ONO3F 08/21/2006:8 01-CCB mg/L ND <0.1 01-CCV mg/L 4.000 108% 90-110 02-CCB mg/L ND <0.1 02-CCV mg/L 4.000 106% 90-110 08/23/2006:A 00-ICB mg/L ND <0.1 00-ICV mg/L 4.000 98.0% 90-110 01-CCB mg/L ND- <0.1 01-CCV mg/L 4.000 97.4% 90-110 pH 4500-H B 08/11/2006:5346 Dup units 0.0% 4.80 4500-H B 08/11/2006:5 00-CCV units 8.000 100% 95-105 Solids. Total Dissolved (TDS) 2540C 08/15/2006:A235 Blank mg/L ND <40 LCS mg/L 1000 98.3% 90-110 Dup mg/L 0.9% 10.0 Explanations 408 Matrix Spike(MS) or Post Digestion Spike(PDS) has no Acceptance Range (DQO) because of high analyte concentration in the sample. Data was accepted based on the LCS or CCV recovery. 435 Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. Definitions Blank Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. LCS Laboratory Control Standard,'Sample - Prepared to verify that the preparation process is not affecting analyte recovery. MS/MSD Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication o how that sample matrix affects analyte recovery. Dup Duplicate Sample - A random sample with each batch is prepared and analyzed in duplicate. The relative percent difference is an indication of precision for the preparation and analysis. - ICB Initial Calibration Blank - Analyzed to verify the instrument baseline is within criteria. ICV Initial Calibration Verification - Analyzed to verify the instrument calibration is within criteria. CCB Continuing Calibration Blank - Analyzed to verify the instrument baseline is within criteria. CCV Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. ND Non-detect - Result was below the DQO listed for the analyte. <'k High Sample Background - Spike concentration was less than one forth of the sample concentration. DQO Data Quality Objective - This is the criteria against which the quality control data is compared. Report continued on next page... STK636936: Quality Control Page 2