7-4-15: OPERATIONS; NOISE; HOURS; EXPLOSIVES; DUST; WATER POLLUTION; TOPSOIL PRESERVATION:
The following operating standards shall be observed at the extraction site of any operation permitted under this chapter:
   A.   The maximum noise level at the perimeter of the site shall be within the limits set by the Minnesota pollution control agency and the federal environmental protection agency. (Ord. 375, sec. 1, 5-1-1989)
   B.   Extraction and hauling operations and related incidental activities shall be performed during only those times between seven o'clock (7:00) A.M. and seven o'clock (7:00) P.M. Monday through Friday, unless otherwise limited or extended by the city council as part of this permit. (Ord. 936, 3-16-2015)
   C.   Operators shall utilize all practical means to eliminate vibration on adjacent property from equipment operation.
   D.   Operators shall comply with all applicable city, county, state and federal regulations for the protection of water quality, including the Minnesota pollution control agency and federal environmental protection agency regulations for the protection of water quality. No waste products or process residue shall be deposited in any lake stream or natural drainage system. All wastewater shall pass through a sediment basin before drainage into a stream.
   E.   All topsoil shall be retained at the site until complete rehabilitation of the site has taken place according to the rehabilitation plan.
   F.   Operators shall use all practical means to reduce the amount of dust, smoke, and fumes caused by the operations. (Ord. 375, sec. 1, 5-1-1989)