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www*ier#ab.com <br />Aiuhlcd,EuaA?a9iact fi61 <br />'24711 • Billings, MT IU8-135-41119`• Casper, WY 960-235-0515 <br />? ; C,tr, SD BIB-612=1225 • college station, iX $"-690-1218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 03/24/11 <br />Project: Schwartz GW 3/04/11 S25660 Work Order: C11030181 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Batch: R143503 <br />Sample ID: LCS 2 Laboratory Control Sample Run: IC2-C_110309A 03/09/11 17:21 <br />Chloride 10.1 mg/L 1.0 101 90 110 <br />Sulfate 40.7 mg/L 1.0 101 90 110 <br />Sample ID: MBLK 2 Method Blank Run: IC2-C_110309A 03/09/11 17:36 <br />Chloride ND mg/L 3.0 <br />Sulfate ND mg/L 5.0 <br />Sample ID: LFB 2 Laboratory Fortified Blank Run: IC2-C_110309A 03/09/11 18:07 <br />Chloride 12.0 mg/L 1.0 96 90 110 <br />Sulfate 49.0 mg/L 1.0 98 90 110 <br />Sample ID: C11030162-017AMS 2 Sample Matrix Spike Run: IC2-C_110309A 03/10/11 09:32 <br />Chloride 141 mg/L 1.0 95 80 120 <br />Sulfate 614 mg/L 4.0 92 80 120 <br />Sample ID: 011030162-017AMSD 2 Sample Matrix Spike Duplicate Run: IC2-C_110309A 03/10/11 09:48 <br />Chloride 141 mg/L 1.0 95 80 120 0.1 10 <br />Sulfate 614 mg/L 4.0 92 80 120 0.0 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 12 of 20 <br />