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www:d*mg b.com <br />Aubrtlphl Eix+MM? 31bu; tl191 <br />2-0711 • Billings, MT 8118-735=4489 • Casper, INY 888-235-0515 <br />Rapid,city, SD 88B472-1225 • College Station, YX 888-8l0-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/01/11 <br />Project: Schwartz SW 03/01/1 1 S25651-S25658 Work Order: C11030134 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E300.0 Batch: R143420 <br />Sample ID: LCS 2 Laboratory Control Sample Run: IC2-C_110307A 03/07/11 18:26 <br />Chloride 9.97 mg/L 1.0 100 90 110 <br />Sulfate 40.4 mg/L 1.0 100 90 110 <br />Sample ID: MBLK 2 Method Blank Run: IC2-C_110307A 03/07/11 18:41 <br />Chloride ND mg/L 0.06 <br />Sulfate 0.2 mg/L 0.2 <br />Sample ID: LFB 2 Laboratory Fortified Blank Run: IC2-C_110307A 03/07/11 19:12 <br />Chloride 12.3 mg/L 1.0 98 90 110 <br />Sulfate 50.0 mg/L 1.0 100 90 110 <br />Sample ID: C1 1030133-001 AMS 2 Sample Matrix Spike Run: IC2-C_110307A 03/08/11 10:37 <br />Chloride 11.6 mg/L 1.0 103 80 120 <br />Sulfate 44.3 mg/L 1.0 102 80 120 <br />Sample ID: C11030133-001AMSD 2 Sample Matrix Spike Duplicate Run: IC2-C_110307A 03/08/11 10:53 <br />Chloride 11.8 mg/L 1.0 105 80 120 1.4 10 <br />Sulfate 45.2 mg/L 1.0 104 80 120 2.0 10 <br />Method: E300.0 <br />Sample ID: LCS 2 Laboratory Control Sample <br />Chloride 10.1 mg/L <br />Sulfate 40.7 mg/L <br />Sample ID: MBLK 2 Method Blank <br />Chloride ND mg/L <br />Sulfate 0.2 mg/L <br />Sample ID: LFB 2 Laboratory Fortified Blank <br />Chloride 12.0 mg/L <br />Sulfate 49.0 mg/L <br />Sample ID: 011030199-001AMS 2 Sample Matrix Spike <br />Chloride 25.4 mg/L <br />Sulfate 161 mg/L <br />Sample ID: C11030199-001AMSD 2 Sample Matrix Spike Duplicate <br />Chloride 25.7 mg/L <br />Sulfate 162 mg/L <br />Batch: R143503 <br />Run: IC2-C_110309A 03/09/11 17:21 <br />1.0 101 90 110 <br />1.0 101 90 110 <br />Run: IC2-C 110309A 03/09/11 17:36 <br />0.06 <br />0.2 <br /> Run: IC2-C_110309A 03/09/11 18:07 <br />1.0 96 90 110 <br />1.0 98 90 110 <br /> Run: IC2-C_110309A 03/09/11 18:38 <br />1.0 105 80 120 <br />1.6 99 80 120 <br /> Run: IC2-C_110309A 03/09/11 18:53 <br />1.0 107 80 120 1.4 10 <br />1.6 100 80 120 0.4 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 28 of 43 <br />