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Mining will not occur within thirty feet of the boundary of an adjoining property wi'rich is not <br />being used for extraction operations. <br /> <br />3.3 FENCING <br /> <br />The perimeter of the site is fenced to prevent unauthorized access. A four foot fence will be <br />installed as necessary in areas where collections of water greater than 1 ~/2 feet deep are located, <br />where extraction slopes are steeper than one foot vertical to 1 ½ feet horizontal, and any other <br />areas where obvious signs of danger to the public exist. <br /> <br />3.4 SITE APPEARANCE AND SCREENING <br /> <br />All Site equipment will be kept operational. Abandoned machinery and rubbish will be <br />periodically removed from the Site. All temporary buildings and structures will be removed and <br />the Site will be graded and restored in accordance with the restoration plan within three months <br />after termination of the extraction operations or within three months after termination of the <br />extraction license. <br /> <br />The perimeter of the Site will be planted or otherwise screened when required. The trees and <br />ground cover located in the mining areas will be removed as each phased area progresses. All <br />existing trees and ground cover will be preserved to the maximum extent feasible. The majority <br />of the Site will remain undisturbed. <br /> <br />3.5 REHABILITATION <br /> <br />Rehabilitation will be continuing process, occurring as quickly as possible upon completion of <br />each phased operation. <br /> <br />All banks and slopes will be restored in accordance with the attached Restoration Plan. Finished <br />slopes will not exceed 4:1. <br /> <br />A minimum of 3 inches of topsoil will be placed over restored areas. The restored areas will be <br />planted with enough ground cover sufficient to contain the soil. The vegetation will be inspected <br />periodically to insure it is self-sustaining. Trees will be planted where appropriate. <br /> <br />No water bodies will be created as part of the mining operation. All standing surface waters <br />resulting from the mining operation will be 'backfilled with acceptable material. <br /> <br />3.6 NOISE <br /> <br />Maximum noise levels at the perimeter of the Site will comply with Minnesota Pollution Control <br />Agency (MPCA) standards. Any nuisance noises will be minimized by limiting hours of <br />operation. Selected placement of gravel stockpiles can also be used to control noise. On-Site <br /> <br /> LIESCH ASSOCIATES, INC. <br />January 2003 Hydrogeologists · Engineers · Environmental Scientists -Page 6- <br /> <br /> <br />