2010-04-29_REVISION - M1980178 - Laserfiche WebLink

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roots, stumps, and general handling of the material. It is anticipated that between six and eight inches of soil will be salvaged for use during the reclamation process described in Exhibit E. In order to control erosion, the surface of the soil stockpiles will be roughened using tracked machinery to create a series of ridges and depression which run perpendicular to the slopes. The horizontal depression will be created approximately two to four inches deep and spaced between four and six inches apart. Herbicides will be applied annually to control weed growth on the soil stockpiles, a weed control plan will be implemented for the entire site (See Exhibit E) and will remain in effect during the entire life of the mine. Setbacks between the mining area and the permit boundary have been maintained to protect the integrity of the adjoining land. The sand and gravel removal process will be conducted using loaders, and/or excavators. Blasting of the resource is not necessary. Front end loader(s) will transport the sand and gravel resource to a nearby crushing and screening area located within the extraction area, or the haul trucks. The crushed and screened material will then be loaded, transported and stockpiled according to size nearby, or hauled to a construction site for use. Extraction of the sand and gravel resource will typically occur in two approximate equal 20 foot thick lifts. Sheets 2 and 3 in Exhibit C illustrate the location and slope the perimeter mine high walls. The maximum anticipated height of the working face high wall will be approximately 50 feet and a maximum length of approximately 350 feet. Mining along the perimeter of the mine area will be conducted at a three (horizontal) to one (vertical) slope which would result in a maximum 150 foot long slope face. TIMETABLE - Several factors affect the total life of most sand and gravel operations. Most notable is the surrounding communities' future aggregate needs. Other factors include: ? Local, State, and Federal Economic Trends ? Future Local Growth Trends ? Major Public and Private Improvement Projects - Highway Improvements School Buildings Governmental Buildings ? Major Commercial Buildings Based on the information presented herein, in conjunction with past aggregated needs in the area, it is forecasted that the gravel will be depleted in about 25 years. It should be pointed out; forecasts are based on current and past available information. Inherent with any forecast is a degree of uncertainty. Rev. 02/25/10 2 Rev. 04/19/10