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u <br />i~ <br />i~ <br />u <br />u <br />i~ <br /> <br />it <br /> <br /> <br />prior to mining activity adjacent to these wetlands. Replacement will <br />be in the immediate area of wetland loss. A 25 foot buffer will be <br />maintained around the perimeter of the wetland areas. This buffer <br />will remain vegetated to provide filtering of stormwater. Additional <br />erosion control measures will be implemented to treat stormwater <br />that may discharge towards the wetland basins. These measures <br />will include as necessary, silt fence, diversion berms, filter logs, and <br />temporary sedimentation/infiltration basins. Reclamation grades will <br />maintain the overall drainage areas to the wetland basins. <br />The site is designated as Flood Zone X on the FEMA Flood <br />Insurance Rate Map. Flood Zone X is an area determined to be <br />outside of the 100 year floodplain. <br />c) Estimate of quantity of material to be mined: <br />An estimated 2.45 million cy of material will be mined on the site. <br />d) Depth of water table: <br />The depth of the water table was identified during the EIS process. <br />Based on information presented in the EIS, the elevation of the water <br />table varies from approximately 945 feet above msl in the northwest <br />corner of the site to approximately 942 feet above msl in the <br />southeast corner of the site. Groundwater flows in a northwest to <br />southeast direction. <br />e) Average thickness of overburden <br />Sand and gravel is found immediately below the topsoil. <br />8.) Plan of Operation: <br /> <br /> <br /> <br /> <br /> <br />Operations at the site will include clearing and grubbing, stripping topsoil <br />and stockpiling on site. In wooded areas, trees will be harvested for use <br />as lumber and/or bio-fuel. Once an area is cleared the sand and gravel <br />will be removed using front end loaders and excavators. Other <br />operation will include crushing, screening, washing, stockpiling, material <br />transfer, hauling and reclamation activities. Recycling of concrete and <br />asphalt may also occur at the site. <br />Processing equipment for crushing, screening and washing will be <br />brought to the site periodically as needed. Crushing, screening and <br />washing will take place throughout the mining operation. The location of <br />the equipment will vary throughout the life of the operation. Equipment <br />will follow the movement of the active mine face. Conveyors will be <br />Tiller Corporation <br />Conditional Use Permit Application <br />August 30, 2010 <br />Page 17 <br />