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Recreational Lands. The only recreational use of the area above the <br />• planned mining is for deer hunting. Likewise, because hunting is the <br />only recreational activity, subsidence or the potential of subsidence <br />should have no effect on any recreational uses of the area. <br />Existing Structures. No structures or dwellings exist in the area above <br />the planned mining. Therefore, potential for subsidence to existing <br />structures is not applicable to this permit application. <br />Roads. No roads pass over the area to be mined. The area may be used <br />occasionally by local four-wheel drive advocates; However it is not <br />anticipated that any potential subsidence would result in damage to this <br />type of vehicle use. <br />Grazing Lands. The steep slopes of the permit area are generally not <br />easily grazed by domestic livestock., Therefore, subsidence, if it <br />occurs, should have no effect on the use of the land for grazing. <br />• Subsidence Monitoring Program <br />A monitoring system has been established within the permit area in order <br />to provide quantitative data regarding potential surface subsidence. <br />The areas above the planned mining will be monitored for subsidence as <br />shown on the Mine Plan Map (Map 8), and subsidence monitoring markers <br />will be routinely surveyed on a semi-annual basis to determine any <br />movement. <br />The monitoring system will involve the placement of several monitoring <br />control stations. These control stations will consist of a pipe or <br />rebar, anchored firmly in place, with a survey cap identifying each <br />station. The bottom of each station will lie below the frostline. <br />Where conditions permit, rebar will be driven into bedrock. Elsewhere, <br />an iron pipe or rebar will be set in concrete. Rebars will be <br />five-eighths inch in diameter and will extend to a depth of at least <br />three feet beneath the ground surface. <br />~• <br />2.05-48 <br />