Laserfiche WebLink
Ce <br /> <br />periodically. The proposed operation does not include gravel washing. Operation of the <br />portable asphalt plant will include drying and heating of aggregate and mixing with <br />asphalt cement coating to produce asphalt. Mining will be conducted in phases (see <br />Figure 3 in Attachment A). As a phase is opened topsoil will be stripped from the <br />desig-nated area and stockpiled on-site for later use in site restoration. <br /> <br />The gravel mined will be processed on Site or hauled to a local asphalt facility located <br />approximately ~A-mile south of the Site. Truck traffic generated by the gravel mine will <br />be limited to an approximate 1,000 foot stretch between 219th Avenue and 217th Avenue <br />on Trunk Highway 169. Auxiliary northbound and southbound shoulder lanes will be <br />constructed according to Minnesota Department of Transportation (MnDOT) <br />specifications. <br /> <br /> The mining area at its complete aerial extent will be approximately 14.81 acres. The site <br /> is unique nature, in that all of the gravel to be mined is located in existing hills. These <br /> existing hills will be essentially cut down therefore, eliminating the creation of any steep <br /> slopes. Based on the geology of the Elk River Gravel Mining District (Mining District) <br /> the groundwater elevation is the area of the Site is approximately 950 feet. The proposed <br />maximum depth of mining will not extend below an elevation of 955 feet, or five feet <br /> above the water table. <br /> <br />Upon phased completion of gravel mining activities the stockpiled soils and topsoil will <br />be distributed and graded across the mined area. The average restoration grade will be <br />approximately 950-960 feet. Figure 4 in Attachment A shows the proposed final <br />contours of the Site. Backfilling will be with materials that are suitable for building and <br />backfill. Stockpiled topsoil will be placed on graded and mined surfaces intermittently as <br />the phased mining progresses. Topsoil will be seeded and mulched or stockpiled in a <br />manner to prevent erosion. Upon completion of all mining the Site is proposed to be <br />returned to agricultural use or potentially used for residential development if market <br />conditions are favorable. <br /> <br />Explain the project purpose; if the project will be carried out by a governmental <br />unit, explain the need for the project and identify its beneficiaries. <br /> <br />The project purpose is to obtain natural aggregate material for use in the construction <br />industry. Gravel material mined will be used for the production of asphalt, which will be <br />used for building new roads and improving existing roads in the surrounding area. <br /> <br />Are future stages of this development including development on any outlots planned <br />or likely to happen? __Yes _~X No <br /> <br />If yes, briefly describe future stages, relationship to present project, timeline and <br />plans for environmental review. <br /> <br />eo <br /> <br />Is this project a subsequent stage of an earlier project? __Yes X No <br /> <br />If yes, briefly describe the past development, timeline and an), past environmental <br />review. <br /> <br /> LIESCH ASSOCIATES, INC. <br />Hydrogeologists · Engineers · Environmental Scientists <br /> <br />· Jan-2003 - · Page <br /> <br /> <br />