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December 4, 2012 Lab ID : STK 1250809 Luhdorff& Scalmanini, Consulting Eng. Customer 3-12023 Quality Control - Inorganic 'omliluent Method Date/dD 'rvpe Units Conc. Q( Data UQO Note \i t Chem !41r,�ic 300.0 11/21112:213122CHL MSRPD ingil. 100,0 1.4% _4f 300.0 11121/12:217377CHL CCB ppm 0.134 0.4 CCV ppm 20.00 101% 90-110 CCA ppm 0.153 0.4 CCV ppm 20.1X1 101 % 90-I 10 CCD ppm 0.158 0.4 CCV m 20.00 1 101% 90-110 NOW, 300.0 11121/12:213122CHL LCS mg/L 15.00 104% 90-110 MS mg/L 300.0 101% 87-115 (VI 1242858-001) MSD mg/L 300.0 102% 87-115 MSRPD m /L 100.0 0.4% <9 300.0 11/21112:217377CHL CCB ppm -0.250 0.3 CCV ppm 15.(81 104% 90-110 CCB ppm -0.247 0.3 CCV ppm 15.00 102% 90-110 CCB ppm -0.250 0.3 CCV plain 15.00 106% 90-110 UH,itc 300.0 I V21/12:213122CHL LCS mg/L 50.00 101% 90-110 MS mg/L 1000 104% 92-113 (VI 1242858-00I) MSD mg/L 1000 103% 92-113 MSRPD mg/L 100.0 0.5% 4 300.0 11/21/12.217377CHL CCB ppm -0.04 2 CCV ppm 50.01 103% 90-110 CCB ppm 0.20 2 CCV ppm 50.0(1 102% 90-110 CCB ppm -0.03 2 CCV PPM 50.00 103% 90-110 slit 554110 l l/21/12:2173I3jmg CCB mg/L 0.000 0.1 CCV mg/L 10.00 100% 99-101 Wit n1'screoi S 540 MS mg/L 10.(1(1 100% 90-110 (VI 1242813-004) MSD mg/L 10.00 100% 90-110 MSRPD mg/L I 10.00 (1(/ <0.1 DeBnifian ICB Initial Calibration Blank-Anal.7ed to verify the instrument baseline Is within criteria. CCV Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. CCB :Continuing Calibration Blank-Analyzed to verify the instrument baseline is within criteria. Blank :Method Blank-Prepared to verify that the preparation process is nos contributing contamination to the samples. LCS : laboratory Control Standard Sample-Prepared to verify that the preparation process is not affecting analyte recovery. MS :Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample matrix affects analyte recover, MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analytcd.The movencs arc an indication of 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 differtawe is an indication of precision for the pnpamtion and analysis. MSRPD :MSfMSD Relative Percent Difference(RPD)-'rhe MS relative percent difference is an indication of precision for the preparation and analysis. No :Non-detect-Result was below the DOD listed for the analyte. 1222 Data Quality Objective-This a the criteria atisainst which the quality control data is compared. Explanation 360 C('V above Acceptance Range,.ARI.Samples which were non detect fix this analytic wcrc accepted. 435 Sample mains may be affecting this analyte.Data was accepted based on the LCS or('('V recovery. 440 Sample nondicanogenciiX may he affecting this anal e.Data was accepted based on the LCS or CC'V recovery -- Page 10 of 10