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www.enerdeb.com Helena, MT 877472-0711 - Billings, MT 800-7354489 - Casper, WY 888-235-6515 <br />AW&hWfieatYn ftw I9M J Gillette, WY 866-686-7175 - Rapid City, SD 888-872-1225 - College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 11/22/10 <br />Project: Schwartzwalder Water Monitoring Program SW Work Order: C10100592 <br /> <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A2320 B Batch: R138622 <br />Sample ID: MBLK 2 Method Blank Run: MANTECH_101015B 10/15/10 16:15 <br />Alkalinity, Total as CaC03 ND mg/L 1 <br />Bicarbonate as HC03 ND mg/L 1 <br />Sample ID: LCS1 Laboratory Control Sample Run: MANTECH_101015B 10/15/10 16:31 <br />Alkalinity, Total as CaC03 217 mg/L 5.0 108 90 110 <br />Sample ID: C10100606-001ADUP 2 Sample Duplicate Run: MANTECH_101015B 10/15/10 18:53 <br />Alkalinity, Total as CaC03 213 mg/L 5.0 1.1 10 <br />Bicarbonate as HC03 260 mg/L 5.0 1.1 10 <br />Sample ID: C10100606-001AMS Sample Matrix Spike Run: MANTECH_101015B 10/15/10 19:01 <br />Alkalinity, Total as CaC03 321 mg/L 5.0 88 80 120 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 10 of 36