1-15-16-3: GOALS AND STANDARDS FOR MINERAL EXTRACTION AND SURFACE MINING:

   A.   Temporary Use: Mineral extraction, surface mining and processing activities are considered a temporary use, and applicants shall be required to restore the land to a form suitable for future land use that is consistent with the property's zone designation and consistent with the comprehensive plan map designation. In granting the use, the City shall make a specific finding of fact that the proposed mineral extraction and processing meets all of the following criteria:

      1.   Is consistent with the City's comprehensive plan.

      2.   Is compatible with adjacent zoning, existing and planned land use.

      3.   Provides for the mitigation of environmental impacts including visual quality, pollution control, natural and constructed environment, health, safety, and general welfare.

   B.   Extraction Guidelines: Mineral extraction activities shall be planned, designed and operated in compliance with the following extraction standards:

      1.   Prevent the deposit of mud on improved roads.

      2.   Minimize the adverse impact of mining operations on surface and/or ground water:

         a.   Surface water and sediment control to conform to current State and Federal Best Management Practices.

         b.   Mining activities within floodplain shall demonstrate adequate conveyance of flood flows, stabilization of the channel, and design to withstand capture of the main channel during a flood event.

         c.   Material or mineral stockpiles and/or structures shall not be placed within the floodway.

         d.   Use or reuse of water in mining and processing of sand and gravel to conform to adopted State and Federal Best Management Practices.

      3.   Ensure community safety, health and welfare from mining practices:

         a.   Final slopes of pits shall not be greater than three to one (3:1) for safety and protection of property, unless stability at greater slopes can be demonstrated.

         b.   Hours of operation shall be established to ensure compatibility with surrounding uses.

         c.   Mining operations setbacks to be at least fifty feet (50') from adjacent property lines and at least two hundred fifty feet (250') from occupied dwellings.

      4.   Minimize adverse impacts due to truck traffic:

         a.   Intersection of haul roads and the public road system shall be designed in accordance with the current AASHTO Design Manual.

         b.   Signs, speed zones, and lane markings consistent with safe ingress/egress of heavy truck traffic shall be used.

         c.   Adverse impacts to public roadways shall be mitigated through construction or maintenance of roadways as warranted by use.

      5.   Return the land to a form and productivity that is beneficial to the community:

         a.   Provide timetable for in progress and final restoration.

         b.   During the mining process and after the mining operations have been completed, provide for the restoration of land that has been subjected to surface disturbance by mining thereby conserving natural resources, aid in the protection of wildlife and aquatic resources and establish recreational, open space, residential, and industrial sites in conformance with the comprehensive plan. (Ord. 587, 1-18-2017; amd. Ord. 609, 7-3-2018)