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wwwzteralabxom ( Helena, Mr 877472-0711 • Billings, Mr 800-7354489 • Casper, IVY 888-235-0515 <br />Aub"Erallra2.102 J Gillette, WY 866486-7175 • Rapid City, So 886-672-1225 • College Station, TX 886-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program (S25247) <br />Report Date: 11 /17/10 <br />Work Order: C10101008 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: HACH 8000 Analytical Run: HACH DR3000_101029B <br />Sample ID: CCV-3 Continuing Calibration Verification Standard 10/29/10 10:03 <br />Oxygen Demand, Chemical (COD) 1010 mg/L 5.0 101 90 110 <br />Method: HACH 8000 Batch: A2010-10-29_6_COD_01 <br />Sample ID: MBLK-1 Method Blank Run: HACH DR3000_101029B 10/29/10 10:03 <br />Oxygen Demand, Chemical (COD) ND mg/L 5.0 <br />Sample ID: LCS-2 Laboratory Control Sample Run: HACH DR3000_101029B 10/29/10 10:03 <br />Oxygen Demand, Chemical (COD) 511 mg/L 5.0 102 90 110 <br />Sample ID: C10101065-008EMS Sample Matrix Spike Run: HACH DR3000_101029B 10/29/10 10:05 <br />Oxygen Demand, Chemical (COD) 579 mg/L 5.0 107 90 110 <br />Sample ID: 010101065-008EMSD Sample Matrix Spike Duplicate Run: HACH DR3000_101029B 10/29/10 10:06 <br />Oxygen Demand, Chemical (COD) 580 mg/L 5.0 108 90 110 0.2 10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 17 of 23