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• - www.eiwalab.com Helena, MT 877- 472 -0711 - Billings, AST 600 -735 -4489 - Casper, WY 888- 235 -0515 <br />Av**WE=&VWWX= yZ2 Gillette, WY 866 -686 -7175 - Rapid City, SD 888 -672 -1225 - College Station, TX 888 -600 -2218 <br />` QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />06/12/13 <br />Project: Schwartz 5/16/13 S26976- S26978 & S26980- S26983 <br />Work Order: <br />C13050679 <br />Analyte Count Result Units <br />RL <br />%REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E300.0 <br />Batch: R173735 <br />Sample ID: ICB- 051713 <br />2 Method Blank <br />Run: IC1- C_130519A <br />05/18/13 03:37 <br />Chloride <br />ND mg /L <br />0.07 <br />Sulfate <br />0.1 mg /L <br />0.08 <br />Sample ID: LFB- 051713 -1 <br />2 Laboratory Fortified Blank <br />Run: IC1- C_130519A <br />05/18/13 03:54 <br />Chloride <br />9.78 mg /L <br />1.0 <br />98 <br />90 110 <br />Sulfate <br />39.1 mg /L <br />1.0 <br />97 <br />90 110 <br />Sample ID: C13050681- 001BMS <br />2 Sample Matrix Spike <br />Run: IC1- C_130519A <br />05/18/13 16:40 <br />Chloride <br />43.7 mg /L <br />1.0 <br />100 <br />90 110 <br />Sulfate <br />53.1 mg /L <br />1.0 <br />102 <br />90 110 <br />Sample ID: C13050681- 001BMSD <br />2 Sample Matrix Spike Duplicate <br />Run: IC1- C_130519A <br />05/18/13 16:57 <br />Chloride <br />43.9 mg /L <br />1.0 <br />102 <br />90 110 0.5 <br />20 <br />Sulfate <br />53.7 mg /L <br />1.0 <br />104 <br />90 110 1.2 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 23 of 37 <br />