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www.ab doo.com 1&?&)472-Qll • Billings, MT 1100-735 4199 • CasperWYBS&285-1513 <br />AMabprfl.E lYsaSifaef l81f1 7175 !Rapid Q ft SO 90B-672-1225 * College Station, TX 88MID-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz SW 2/23/2011 S25610-S25617 <br />Analyte Count Result Units <br />Method: E200.7 <br />Sample ID: MB-110307A 5 Method Blank <br />Calcium ND mg/L <br />Iron ND mg/L <br />Magnesium ND mg/L <br />Potassium ND mg/L <br />Sodium ND mg/L <br />Sample ID: LFB-110307A 5 Laboratory Fortified Blank <br />Calcium 49.0 mg/L <br />Iron 0.983 mg/L <br />Magnesium 50.0 mg/L <br />Potassium 44.1 mg/L <br />Sodium 48.4 mg/L <br />Sample ID: C11020686-004CMS2 5 Sample Matrix Spike <br />Calcium 132 mg/L <br />Iron 2.06 mg/L <br />Magnesium 109 mg/L <br />Potassium 94.0 mg/L <br />Sodium 114 mg/L <br />Sample ID: 071020686-004CMSD 5 Sample Matrix Spike Duplicate <br />Calcium 125 mg/L <br />Iron 2.00 mg/L <br />Magnesium 106 mg/L <br />Potassium 94.2 mg/L <br />Sodium 114 mg/L <br />Report Date: 03/24/11 <br />Work Order: C11020686 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R143378 <br />Run: ICP2-C 110307A 03/07/11 13:04 <br />0.40 <br />0.030 <br />0.10 <br />0.10 <br />0.60 <br /> Run: ICP2-C_110307A 03/07/11 13:08 <br />0.50 98 85 115 <br />0.030 98 85 115 <br />0.50 100 85 115 <br />0.50 88 85 115 <br />0.50 97 85 115 <br /> Run: ICP2-C_110307A 03/07/11 15:03 <br />1.0 101 70 130 <br />0.030 100 70 130 <br />1.0 100 70 130 <br />1.0 91 70 130 <br />1.0 98 70 130 <br /> Run: ICP2-C_110307A 03/07/11 15:07 <br />1.0 94 70 130 5.7 20 <br />0.030 97 70 130 2.9 20 <br />1.0 97 70 130 2.8 20 <br />1.0 91 70 130 0.2 20 <br />1.0 98 70 130 0.0 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 17 of 38 <br />