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wwcenergylab.com Helena MT B77-472-0711 Billings MT 800-735-4489 Caspor WY 888-235-0515 <br />_ . .? AnahnfeWEiceuenvoSince IW Gillette, WY 666-686-7175 • Rapid City SD 888-672-1225 • College Station TX 888-690-2218 <br />_......._..... ._-.. _ <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program-Discharge <br />Analyte Count Result Units <br />Report Date: 10/04/10 <br />Work Order: C10090551 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <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) 513 mg/L <br />Sample ID: 010090581-001DMS Sample Matrix Spike <br />Oxygen Demand, Chemical (COD) 556 mg/L <br />Sample ID: 01 0 0 9 0581-0 01 DMSD Sample Matrix Spike Duplicate <br />Oxygen Demand, Chemical (COD) 561 mg/L <br />Qualifiers: <br />RL - Analyle reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: A2010-09-17_6_COD_01 <br />Run: HACH DR3000._100917B 09/17/10 13:55 <br />3 <br />Run: HACH DR3000_1009176 09/17/10 13:56 <br />5.0 103 90 110 <br />Run: HACH DR3000_100917B 09/17/10 13:57 <br />5.0 105 90 110 <br />Run: HACH DR3000_100917B 09/17/10 13:58 <br />5.0 106 90 110 0.9 10 <br />ND - Not detected at the reporting limit. <br />Page 17 of 22