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<br />S <br />rrvmene I lab.com <br />1871 Helena, W 877-472-0711 • Billings, MT 800-735-4seti • Gasper, rrr oao-caa-vu Ia <br />SO BOB-672-1225 • College Station, T% 888-680-2218 <br />wV 866-6864175 • Rapid City <br />te <br />G <br />vu <br />MfryyeafE iaa ; <br />illet , <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> Report Date: 04/25/11 <br />Client: Cotter Corporation <br />rtz-GW 03/30/11 <br />h <br />S S25671 & S25672 Work Order: C11030940 <br />wa <br />c <br />Project: <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Analyte Analytical Run: IC2-C_1 10404A <br />Method: E300.0 <br />04/04/11 17:49 <br />Sample ID: ICV <br />2 Initial Calibration Verification Standard <br />Chloride 9.93 mg/L 1.0 99 90 110 <br />Sulfate 40.2 mg/L 1.0 101 90 110 <br /> Batch: R144472 <br />Method: E300.0 <br />110404A 04/04/11 18:04 <br />Run: IC2-C <br />Sample ID: MBLK <br />2 Method Blank <br />_ <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_110404A 04/04/11 18:35 <br />Chloride 12.2 mg/L 1.0 97 90 110 <br />Sulfate 50.2 mg/L 1.0 100 90 110 <br />Sample ID: LCS 2 Laboratory Control Sample Run: IC2-C_110404A 04/05/11 02:02 <br />Chloride 10.0 mg/L 1.0 100 90 110 <br />Sulfate 40.5 mg/L 1.0 101 90 110 <br />Sample ID: C11030940-002BMS 2 Sample Matrix Spike Run: IC2-C_110404A 04/05/11 06:40 <br />Chloride 82.4 mg/L 1.0 101 80 120 <br />Sulfate 543 mg/L 4.0 98 80 120 <br />Sample ID: C11030940-002BMSD 2 Sample Matrix Spike Duplicate Run: IC2-C_110404A 04/05/11 06:55 <br />Chloride 82.8 mg/L 1.0 102 80 120 0.5 10 <br />Sulfate 542 mg/L 4.0 97 80 120 0.2 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 15 of 24