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<br /> <br />The wells will be equipped with a continuous graphic water level monitoring <br />instrumentation. <br />D.5.3 Rock Mechanics and Subsidence Monitoring <br />Rock mechanics data specific to the site was supplied under separate cover <br />dated January 19, 1984. <br />In the unlikely event that subsidence should occur, any surface expression <br />of subsidence will tie monitored. Details of the monitoring program were <br />also presented in the January 19, 1984 submittal. <br />D.5.4 Erosion Control <br />The total disturbed area associated with the Pilot Plant operations is <br />approximately 14.0 acres. Of this total, 5.0 acres represent the <br />• evaporation ponds, 5.4 acres represent the well field, 2.4 acres represent <br />the topsoil stockpiles, and the remaining 1.2 acres are associated with the <br />plant site. The plant site area will be leveled, and parking areas will be <br />graveled. Drainage control ditches as shown on Figure D-1, will be <br />constructed to divert precipitation runoff from undisturbed areas to the dry <br />drainage. Any disturbed slopes steeper than 30 percent will be stabilized <br />with water bars and contour furrowing. Topsoil storage piles will be seeded <br />to protect against erosion (see Exhibit E). <br />Erosion control measures such as water bars, culverts, windrowing, and <br />contour furrowing will be utilized, as required, to control erosion along <br />the plant access road. Cut and fill areas will be contoured, seeded, and <br />mulched to minimize erosion. Ditches along the road will be constructed <br />with energy absorbers to regulate flow velocity and prevent excessive <br />erosion. Rock rip-rap will be installed at the culvert out-falls to <br />dissipate energy and prevent erosion. <br /> <br />