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wwwoodab.com ? Helena, Mt 377-M-U/71 0 6illln&s, ml 6uu-144-9400 " basper, nT ooo-aaa-va[a <br />Ma tErcail?a?act t85? ) . ' "Gillette, WY 866-686-7175 • Rapid City, So 886-672-1225 • College Station, TX BBB-690-2219 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz GW 3/24/11 S25646 & S25647 <br />Analyte Count Result Units <br />Method: E200.7 <br />Sample ID: MB-110404A 5 Method Blank <br />Calcium ND mg/L <br />Magnesium ND mg/L <br />Potassium ND mg/L <br />Sodium ND mg/L <br />Zinc ND mg/L <br />Sample ID: LFB-110404A 5 Laboratory Fortified Blank <br />Calcium 46.7 mg/L <br />Magnesium 47.4 mg/L <br />Potassium 44.9 mg/L <br />Sodium 43.8 mg/L <br />Zinc 0.917 mg/L <br />Sample ID: C11030756-001BMS2 5 Sample Matrix Spike <br />Calcium 129 mg/L <br />Magnesium 125 mg/L <br />Potassium 120 mg/L <br />Sodium 388 mg/L <br />Zinc 1.93 mg/L <br />Sample ID: C1 1030756-001 BMSD 5 Sample Matrix Spike Duplicate <br />Calcium 124 mg/L <br />Magnesium 123 mg/L <br />Potassium 122 mg/L <br />Sodium 394 mg/L <br />Zinc 1.86 mg/L <br />Report Date: 04/19/11 <br />Work Order: C11030817 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R144441 <br />Run: ICP2-C 110404A 04/04/11 11:29 <br />0.40 <br />0.10 <br />0.10 <br />0.60 <br />0.0050 <br /> Run: ICP2-C_110404A 04/04/11 11:33 <br />0.50 93 85 115 <br />0.50 95 85 115 <br />0.80 90 85 115 <br />0.50 87 85 115 <br />0.010 92 85 115 <br /> Run: ICP2-C_110404A 04/05/11 01:38 <br />1.0 96 70 130 <br />1.0 92 70 130 <br />1.0 74 70 130 <br />1.0 90 70 130 <br />0.010 94 70 130 <br /> Run: ICP2-C_110404A 04/05/11 01:42 <br />1.0 92 70 130 3.3 20 <br />1.0 90 70 130 1.6 20 <br />1.0 76 70 130 1.5 20 <br />1.0 96 70 130 1.4 20 <br />0.010 90 70 130 3.5 20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 11 of 26