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www.energylab.com <br />Aaatyrleal fxcellaws since I gm <br />Helena, MT 877-472-0711 • Billings, MT 800-735-4489 • Casper, WY 906-ZJD-UD10 <br />Gillette, WY 866686-7175 • Rapid City, SD 888-672-1115 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Sampling Program Discharge <br />Analyte Count Result Units <br />Method: HACH 8000 <br />Sample ID: CCV-3 Continuing Calibration Verificati <br />Oxygen Demand, Chemical (COD) 157 mg/L <br /> <br />Method: HACH 8000 <br />Sample ID: MBLK-1 Method Blank <br />Oxygen Demand, Chemical (COD) ND mg/L <br />Sample ID: LCS-2 Laboratory Control Sample <br />Oxygen Demand, Chemical (COD) 102 mg/L <br />Sample ID: C10120395-001KMS Sample Matrix Spike <br />Oxygen Demand, Chemical (COD) 49.0 mg/L <br />Sample ID: 010120395-001KMSD Sample Matrix Spike Duplicate <br />Oxygen Demand, Chemical (COD) 48.0 mg/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 01/24/11 <br />Work Order: C10120395 <br />RL %,REC Low Limit High Limit RPD RPDLimit Qual <br />Analytical Run: HACH DR3000_101214A <br />ndard 12/14/10 13:19 <br />5.0 105 90 110 <br />Batch: A2010-12-14_6_COD_02 <br />Run: HACH DR3000_101214A 12/14/10 13:18 <br />3 <br />Run: HACH DR3000_101214A 12/14/10 13:19 <br />5.0 102 90 110 <br />Run: HACH DR3000_101214A 12/14/10 13:21 <br />5.0 102 90 110 <br />Run: HACH DR3000_101214A 12/14/10 13:21 <br />5.0 100 90 110 2.1 10 <br />ND - Not detected at the reporting limit. <br />Page 17 of 22