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www.energylab.com Helena, MT B77-472-0711 « Billings, MT 800-735-4489 + Casper, WY 888-235-0515 <br />AaalyrW Exeallance SMca 1952 i Gillette, WY 866-686-7175 a Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation <br />Project: Schwartzwalder Mine <br />Report Date: 09/27/10 <br />Work Order: C10080962 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: A4500-F C Batch: R136646 <br />Sample ID: MBLK Method Blank Run: MANTECH_100830A 08/30/10 07:21 <br />Fluoride ND mg/L 0.05 <br />Sample ID: LCS Laboratory Control Sample Run: MANTECH_100830A 08/30/10 07:24 <br />Fluoride 1.02 mg/L 0.10 102 90 110 <br />Sample ID: C10080954-004AMS Sample Matrix Spike Run: MANTECH_100830A 08/30/10 12:13 <br />Fluoride 10.8 mg/L 0.10 80 80 120 <br />Sample ID: C10080954-004AMSD Sample Matrix Spike Duplicate Run: MANTECH_100830A 08/30/10 12:16 <br />Fluoride 10.8 mg/L 0.10 80 80 120 0 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 17 of 44