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1.0 INTRODUCTION <br />A water quality monitoring program was initiated at the Edna Mine to monitor specific chemical <br />characteristics of Trout Creek and the alluvium associated with Trout Creek which may be <br />affected by mining and reclamation operations. The intent of the program was to describe <br />seasonal variations in concentration levels of the parameters monitored, as well as indicate if <br />mining activities and/or reclamation activities were impacting the natural seasonal fluctuations. <br />The monitoring program has been altered via Technical Revisions 47 and 48. Monitoring wells <br />215W, 215L, 218W, 218L, M892S and M892L were discontinued September 21, 2007 in <br />accordance with TR-47. Monitoring wells TR-1.5, TR-3, TR-4, WR-1 and TCS-1, surface water <br />flow monitoring sites TR-a and TR-b and surface water quality monitoring sites TR-A, TR-B, <br />TR-C and TR-D were discontinued September 2, 2009 in accordance with TR-48. <br />The purpose of this report is to provide updated information pertaining to the on-going <br />hydrologic monitoring program developed for the Edna Mine. The previous report, dated <br />February 2010, reported monitoring activities up through the end of 2009. The 2009 report <br />contains historical data for discontinued sites at the Edna Mine, this data is not replicated in this <br />report. This report provides a discussion of monitoring activities performed through 2010. <br />The report is divided into several sections including: Hydrologic Monitoring Network; Spring <br />and Seep Survey; and Moffat Stability Monuments. <br />'^ Page 1 <br />^W WI.ENGINFERING