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erosion and promote the growth of vegetation on disturbed or <br />reclaimed lands. <br />Through careful planning, coordination and implementation of these <br />practices and measures, erosion is controlled at or below maximum <br />acceptable levels. In many cases, reclaimed lands maintain erosion levels <br />that are less than those occurring in the undisturbed premining <br />environment. <br />4.3.6.2 Erosion Inventory and Monitoring <br />Although mining and reclamation planning incorporates a thorough site <br />evaluation, it is impossible to fully anticipate all site conditions that <br />may possibly represent excessive erosion potentials, particularly <br />hydrologic conditions and meteorologic phenomenon. Therefore, in order to <br />identify unexpected erosion features and potential problem areas, <br />reconnaissance and monitoring of reclaimed lands will be conducted. This <br />mine-wide monitoring will be conducted shortly after snowmelt of each year <br />(typically May or early June) and will emphasize bonded, reclamation areas, <br />haulroad ditches and concentrated flow structures. Any areas or structures <br />which appear to, or have the potential to, exhibit excessive erosion will <br />be identified and inventoried during this survey. <br />4.3.6.3 Reactive Erosion Control <br />When unacceptable levels of erosion are identified through the <br />monitoring and inventory process, various corrective measures may be <br />implemented to correct the problem, including, but not limited to the <br />following: <br />1) Placement of rock or straw check dams or mulch imprinting <br />utilizing livestock and wildlife to stabilize small concentrated <br />flow areas (rills/gullies); <br />2) Gradient terraces may be constructed to shorten slope lengths and <br />convey concentrated flow around or through reclaimed areas; <br />3) Establishment of temporary or permanent vegetation by either <br />reseeding or interseeding temporary or permanent seed mixtures, or <br />the transplanting of containerized or bare root stock; <br />Technical Revision 40 4.3-19 March 25, 2003 <br />