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adjacent areas and to prevent long term adverse changes in the balance <br />• that might result from the activities. <br />Adverse impacts to the prevailing hydrologic balance will be <br />accomplished by the following means: <br />• Implementation of a drainage and sediment control plan <br />• Installation of two (2) water quality monitoring wells <br />Drainage and Sediment Control Plan <br />The object of the Mt. Harris Coal Company Drainage and Sediment Plan is <br />to contain all runoff resulting from precipitation and/or snow melt <br />within the permit area and to prevent any runoff from adjacent areas <br />from infringing upon the permit area. <br />• The plan involves construction of an embankment around the area, as <br />shown on the Facilities Map (Map 5), and the construction of a <br />sedimentation pond at the northern end of the permit area. No <br />embankment will be constructed on the Northwest boundary of the permit <br />area since this area is already contained by the side track to the DRG41R <br />Railroad. <br />The existing topography, along with the constructed berm will allow the <br />water that is contained to flow to the sedimentation pond that is <br />located at the Northern portion of the permit area. Refer to the <br />Drainage and Sediment Control Plan (Map 7). <br />The embankment structure will be designed and construction certified by <br />a qualified registered professional engineer. Materials used for <br />embankment construction will be natural materials found on site. The <br />embankment will be revegetated during the first growing season after <br />construction. <br /> <br />2.05.6-3 <br />