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www.energyiab.com j Helena, MT 877-472-0711 * Billings, MT 800-735-4499 • Casper, WY 8B8-235-0515 <br />AnrlytlcalixcOwwo Since 1832 Gillette, WY 666-686-7175 • Rapid City, SO 898-672-1225 • 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-Ground Water <br />Analyte Count Result Units <br />Method: A2320 B <br />Sample ID; MBLK 2 Method Blank <br />Alkalinity, Total as CaC03 ND mg/L <br />Bicarbonate as HC03 ND mg/l_ <br />Sample ID: LCS Laboratory Control Sample <br />Alkalinity, Total as CaC03 205 mg/L <br />Sample ID: C10110402-003ADUP Sample Duplicate <br />Alkalinity, Total as CaC03 184 mg/L <br />Sample ID: C10110402.003AMS Sample Matrix Spike <br />Alkalinity, Total as CaC03 316 mg/L <br />Report Date: 12/15/10 <br />Work Order: C10110379 <br />RL %REC Low Limit High Limit RPD RPDLlmit Qual <br />Batch: A139722 <br />Run: MANTECH_101110B 11110/10 15:33 <br />1 <br />1 <br />Run: MANTECH_101110B <br />5.0 102 90 110 <br />Run: MANTECH_101I10B <br />5.0 <br />Run: MANTECH_101110B <br />5.0 105 80 120 <br />Qualifiers: <br />RL - Analyle reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum delectable concentration <br />11/10/10 15:46 <br />11/10/10 17:33 <br />0.5 10 <br />11/10/1017:42 <br />Page 5 of 21