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C <br /> May 29, 2007 Lab ID : ST'K734024 <br /> Chesney Consulting Customer : 3-15419 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID 1 Type Units Cone. QC Data DQO Note. <br /> r. <br /> Wet Chem <br /> Nitrate 300.0 05/04/2007:A.i 00-CCV ppm 20.00 101% 90-110 <br /> Nitrile 300.0 05/04/2007:A21�5 LCS mg/L 15.00 101% 90-110 <br /> MS mg1L 300.0 123% 91-121 435 <br /> (STK734018-02} MSD mg1L 300.0 116% 91-121 <br /> MSRPD mg/L 6.3% 523.8 <br /> 300.0 05/04/2007:A 00-ICB ppm ND <0.3 <br /> 00-CCB ppm ND <0,3 <br /> ()0-ICV ppm 30.00 107'h, 90-110 <br /> 00-CCV ppm 15.00 99.2' 90-110 <br /> pH 4500-H B 0510312007:5346 Dup units 0.0% 0.905 <br /> 4500-H 'B 05/0312007tS DO-CCV units 8.000 99.9% 95-105 <br /> Specific Conduetancc 2510B 05/0712007:A212 Blank unihos/cm ND <l <br /> Dup umhos/cm 0.1'9 0,372 <br /> r 2510B 05107/2007:A 00-ICS umhoslcm ND <1 <br /> 004CV umhoslcm 10000 99.8% 95-105 <br /> i 00-CCV umhoslcm 998.0 101% 95-105 <br /> Sulfate 300.0 05104/2007:A215 LCS mg1L 50.00 99.4;x: 90-110 <br /> MS mg/L 1000 122% 78-M <br /> (STK7340.18-02j MSD nig/L 1000 116% 78-137 <br /> MSRPD trig/L 5.5% 512.3 <br /> 300.0 05/04/2007:AI` 00-ICB ppm ND <2 <br /> 00-CCB ppm ND <2 <br /> 00-ICV ppm 100.0 104% 90-110 <br /> 00-CCV ppm 50.00 100% 90-110 <br /> Total Alkalinity (as CaCO3) 23208 05/O812007:A262 Dup nig/L 1.7% 3.42 <br /> 2320B 05/08/2007:A1 00-1CV mg/l 234.9 94.1% 40-110 <br /> 00-CCV mg/l 234.9 93.4Y. 90-110 <br /> Total Dissolved ,Solids 25400 0510712007:A235 Blank mg/L ND <40 <br /> LCS mg/L 1000 100% 90-110 <br /> Dup mg1L l.6% 10.0 <br /> Explanations <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 /> 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 /> differer[ce is an indica ion a€ precision for the preparation and analysis. <br /> 1CB Initial Calibration Blanlc - Analyzed to verify the instrument baseline is within criteria. <br /> Definitions are continued on next page... <br /> t <br /> STK734024: Quality Control Page 4 <br /> f <br />