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<br />4. A 100 foot greenbelt area of undisturbed natural materials is <br />to be left separating the mine site from the river channel. Is <br />this distance a proposed top width, or is it a measurement from <br />the toe of the excavated slope to the eda_e of the channel? <br />Please address the potential for failure of this berm, and <br />describe measures which will be taken to insure its stability <br />both during and after mining in the context of natural bank <br />erosion and ma,ior flood events. <br />5. We have received letters from nearby homeowners, expressing <br />their concerns that the potential for offsite damage due to <br />flood flows will be aggravated by this operation, and that <br />there will be an increased likelihood of further realignment of <br />the river channel to their determent. Please address these <br />issues. <br />6. Does any aspect of your plan constitute placement of fill <br />material in a wetlands, making it necessary to get a 404 permit <br />from the Army Corps of Engineers? <br />7. Please provide details regarding your proposed dewatering <br />operations. What pumping rate do you anticipate will be <br />necessary to dewater the site? During what time period do you <br />intend to operate the site each year? Will pumping be <br />intermittent or continuous during this period? <br />8. Do you propose to incorporate any sedimentation ponds or <br />se-*_ling areas into your proposed dewatering plan? If so, <br />please provide design details and supporting computations for <br />any such structures. <br />9. It appears that you intend to operate asphalt and concrete <br />batch plants in conjunction with this operation, Will these <br />facilities be situated in the flood plain? Please describe <br />measures which will be taken to minimize adverse environmental <br />impacts as a result of operation of these processing facilities <br />during bath normal and flood conditions. <br />- 10. On the Mining Plan Map, there are a number of existing <br />structures noted which appear to be within 200 feet of the <br />proposed permit area. These include a drainage ditch, two <br />power lines, and three homes. Please describe in detail <br />measures which will be taken to prevent damage to these <br />structures. Also, please indicate on the Maps the exact <br />location of any such structures not already shown thereon. <br />11, Please discuss temporary re vegetation and other measures, if <br />any, which will be used for interim stabilization of topsoil <br />and overburden stockpiles. Any topsoil stockpiled for over one <br />year must be stabilized. <br />