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www.eneWab=rn Helena, NT 877-472-0711 • Billings, MT 800-735-4418 • Casper, WYSBB-235-0515 <br />Jai <br />/JDY <br />'c Iletfz 4y 866-686=7175 • Rapid City, So 888-672-1225 • College Station, TX OWGIO-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 09/14/10 <br />Project: Schwartzwalder Water Monitoring Program Work Order: C10080538 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A2320 B Batch: R136229 <br />Sample ID: MBLK 2 Method Blank Run: MANTECH_100818B 08/18/10 16:37 <br />Alkalinity, Total as CaC03 1 mg/L 1 <br />Bicarbonate as HC03 2 mg/L 1 <br />Sample ID: LCS1 Laboratory Control Sample Run: MANTECH_100818B 08/18/10 16:53 <br />Alkalinity, Total as CaC03 213 mg/L 5.0 106 90 110 <br />Sample ID: C10080636-001ADUP Sample Duplicate Run: MANTECH_100818B 08/18/10 19:25 <br />Alkalinity, Total as CaC03 178 mg/L 5.0 0.5 10 <br />Sample ID: C10080636-001AMS Sample Matrix Spike Run: MANTECH_100818B 08/18/10 19:33 <br />Alkalinity, Total as CaC03 312 mg/L 5.0 108 80 120 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 9 of 31