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www.ena dab=Tn a efs"'M7,, 677 412-0711 • Billings, MT I00-735-4489 • Gaspar, WY 888-235-0513 <br />Ahfl DCOMMSMy tiiClt i 7175'!1iapid City, SD 818-612-1225 • College Station, TX 888-680-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz SW 2/17/11 S25626-S25633 <br />Analyte Count Result Units <br />Method: E200.8 <br />Sample ID: C11020612-001EMS4 12 Sample Matrix Spike <br />Aluminum 0.053 mg/L <br />Antimony 0.056 mg/L <br />Arsenic 0.054 mg/L <br />Chromium 0.052 mg/L <br />Copper 0.076 mg/L <br />Lead 0.053 mg/L <br />Manganese 0.20 mg/L <br />Molybdenum 0.049 mg/L <br />Silver 0.018 mg/L <br />Thallium 0.051 mg/L <br />Uranium 0.053 mg/L <br />Zinc 0.13 mg/L <br />Sample ID: 011020612-001 EMSD 12 Sample Matrix Spike Duplicate <br />Aluminum 0.052 mg/L <br />Antimony 0.056 mg/L <br />Arsenic 0.055 mg/L <br />Chromium 0.051 mg/L <br />Copper 0.076 mg/L <br />Lead 0.053 mg/L <br />Manganese 0.19 mg/L <br />Molybdenum 0.049 mg/L <br />Silver 0.018 mg/L <br />Thallium 0.052 mg/L <br />Uranium 0.054 mg/L <br />Zinc 0.13 mg/L <br />Sample ID: LRB 12 Method Blank <br />Aluminum ND mg/L <br />Antimony ND mg/L <br />Arsenic ND mg/L <br />Chromium ND mg/L <br />Copper ND mg/L <br />Lead ND mg/L <br />Manganese ND mg/L <br />Molybdenum ND mg/L <br />Silver ND mg/L <br />Thallium ND mg/L <br />Uranium ND mg/L <br />Zinc ND mg/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 03/21/11 <br />Work Order: C11020554 <br />RL %REC Low Limit High Limit <br />0.0061 <br />0.0010 <br />0.0010 <br />0.050 <br />0.010 <br />0.0010 <br />0.010 <br />0.0010 <br />0.010 <br />0.00040 <br />0.00030 <br />0.010 <br />0.0061 <br />0.0010 <br />0.0010 <br />0.050 <br />0.010 <br />0.0010 <br />0.010 <br />0.0010 <br />0.010 <br />0.00040 <br />0.00030 <br />0.010 <br />0.20 <br />0.0010 <br />0.0010 <br />0.0010 <br />0.0010 <br />0.0050 <br />0.0050 <br />0.0050 <br />5.0E-05 <br />0.00020 <br />0.00020 <br />0.0050 <br /> Run: I C P M S 2-C_110228A <br />107 70 130 <br />112 70 130 <br />109 70 130 <br />103 70 130 <br />102 70 130 <br />104 70 130 <br />106 70 130 <br />95 70 130 <br />88 70 130 <br />102 70 130 <br />106 70 130 <br />100 70 130 <br /> Run: I C P M S 2-C_110228A <br />104 70 130 <br />112 70 130 <br />109 70 130 <br />101 70 130 <br />101 70 130 <br />104 70 130 <br />102 70 130 <br />95 70 130 <br />88 70 130 <br />103 70 130 <br />107 70 130 <br />103 70 130 <br />Run: ICPMS2-C 110228A <br />ND - Not detected at the reporting limit. <br />RPD RPDLimit Qual <br />Batch: R143169 <br />02/28/11 17:00 <br />02/28/11 17:07 <br />2.6 20 <br />0.1 20 <br />0.3 20 <br />2.1 20 <br />0.2 20 <br />0.1 20 <br />1.0 20 <br />0.1 20 <br />0.3 20 <br />0.8 20 <br />0.4 20 <br />1.1 20 <br />03/01/11 00:34 <br />Page 19 of 39