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www.ener&b.com ( Helena, MT 977 -472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888- 235 -8515 <br />Rm >'m JI Gillette, WY 866 -686 -7175 • Rapid City, SC 888 -672 -1225 • College Station, T% 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: <br />Cotter Corporation <br />Report Date: <br />05/29/13 <br />Project: <br />Schwartz -SW 5/4/13 S26868 S26869 <br />Work Order: <br />013050235 <br />Analyte <br />Count Result Units <br />RL <br />° /.REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E300.0 <br />Batch: R173471 <br />Sample ID: <br />ICB- 051013 <br />2 Method Blank <br />Run: IC2- C_130510A <br />05/10/13 09:59 <br />Chloride <br />ND mg /L <br />0.03 <br />Sulfate <br />0.2 mg /L <br />0.07 <br />Sample ID: <br />LFB- 051013 -01 <br />2 Laboratory Fortified Blank <br />Run: IC2- C_130510A <br />05/10/13 13:10 <br />Chloride <br />9.64 mg /L <br />1.0 <br />96 <br />90 110 <br />Sulfate <br />38.6 mg /L <br />1.0 <br />96 <br />90 110 <br />Sample ID: <br />C13050343- 007AMS <br />2 Sample Matrix Spike <br />Run: IC2- C_130510A <br />05/10/13 17:32 <br />Chloride <br />73.5 mg /L <br />1.0 <br />102 <br />90 110 <br />Sulfate <br />626 mg /L <br />4.2 <br />99 <br />90 110 <br />Sample ID: <br />C13050343- 007AMSD <br />2 Sample Matrix Spike Duplicate <br />Run: IC2- C_130510A <br />05/10/13 17:47 <br />Chloride <br />73.4 mg /L <br />1.0 <br />102 <br />90 110 0.1 <br />20 <br />Sulfate <br />624 mg /L <br />4.2 <br />98 <br />90 110 0.3 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit <br />Page 20 of 29 <br />