Excavation and processing of minerals shall be conducted so as to comply with the maximum permissible noise levels established in chapter 10.01 SCC. (Added by Amended Ord. 05-083, Dec. 21, 2005, Eff date Feb. 1, 2006; Amended by Amended Ord. 21-060, Oct. 6, 2021, Eff date Oct. 22, 2021. Formerly 30.31D.135).