(A) Interim use. Aggregate mining is allowed only as an interim land use.
(B) Setback from Residential Zoning District. Any operation, including gravel storage areas, shall be located at least 1,000 feet from a residential district boundary or use.
(C) Submittal requirements. An application for an interim use permit to conduct aggregate mining shall meet the following submittal requirements and standards:
(1) A site and vicinity plan that includes the following shall be provided:
(a) A description of natural features, including wetlands, water bodies and major topographic features located on the property and within 350 feet of the property.
(b) A description of the proposal, including type and amount of material to be removed, overview of planned daily operations including equipment and vehicles; and discussion of how the proposed operations compare to land uses within 1,000 feet of the site.
(c) A description of any potential environmental hazard due to existing or proposed land uses, including but not limited to, soil, water, air, noise, and light.
(d) Grading plans showing land contours prior to excavation, at maximum excavation, and as proposed after completion of reclamation activities.
(e) Storm water management and erosion control plans.
(2) An air quality plan.
(3) A dust management plan. Access drives and roads within the property shall be sprayed with dust suppressants to control fugitive dust. The streets used for access into the site shall also be cleaned at appropriate intervals or as otherwise determined through the interim use permit.
(4) A sound attenuation plan describing sources of sound and indicating conformance with all applicable sound and noise regulations. The maximum noise level at the perimeter of the site shall comply with the limits or standards established by the Minnesota Pollution Control Agency.
(5) A vibration-dampening plan describing sources of vibration and indicating conformance with all applicable vibration regulations.
(6) A traffic plan describing the number of daily truck trips the proposal will generate and the principal access routes to the facility, including a description of the facility’s traffic impact on the surrounding area. Traffic through local residential streets shall be prohibited unless specifically allowed through the interim use permit.
(7) A site reclamation plan that provides for the orderly and continuing rehabilitation of all disturbed land. This plan shall illustrate:
(a) Proposed contours of the site after completion of each stage of reclamation and proposed overall final site contours upon closing of the site. Final proposed contours shall relate to the planned future land use for the property as designated in the city’s land use map.
(b) A re-vegetation plan showing the type, quantity and location of plantings for areas where re-vegetation is proposed or required.
(c) Areas designated for storage of topsoil, overburden, mined materials or other materials to be stored or stockpiled on the site.
(d) A schedule setting forth the timetable for excavation and reclamation of the site.
(e) Criteria and standards that will be used to achieve final rehabilitation as well as intermittent slope stabilization.
(8) All slopes shall be maintained in a safe manner, and shall not exceed two feet vertically to one foot horizontally. Slopes may be increased at the request of the proposer in conjunction with approval of the interim use permit, provided the proposer can demonstrate through engineering data that the slopes can and will be maintained in a safe manner and will not have adverse impact on adjacent land uses or property.
(9) All operations shall be limited to the hours between 7:00 a.m. and 6:00 p.m., Monday through Saturday. All other times of operation shall be prohibited. The Council, at its discretion, may restrict any or all operations on legal holidays.
(10) Security fencing (exclusive of barbed wire) shall be installed and maintained along the perimeter of the entire property.
(11) No part of the reclaimed site that is designated by the city’s land use map for uses other than open space or agriculture shall be at an elevation lower than the minimum required for gravity connection to planned sanitary sewer and storm sewer.
(12) Site reclamation shall begin after excavation of 25% of the total area to be mined or four acres, whichever is less. Excavation and reclamation shall occur on a phased basis.
(13) Security in the form of a cash escrow, letter of credit, or performance bond shall be submitted to ensure that reclamation improvements are completed in a timely manner according to the approved phasing plan for the project. The dollar amount of such security shall be determined in conjunction with the interim use permit and shall be based on the reclamation phasing plan and the estimated costs associated with each phase of reclamation.
(14) The temporary use permit shall be valid for a period not to exceed two years or as otherwise provided in the approved temporary use permit. Prior to expiration of the permit, the property owner or operator may apply for renewal according to the procedures as set forth in §§ 154.195 through 154.198.
(Ord. 1040, passed 1-5-16)