(1) Operators shall divert or protect all natural drain courses to prevent pollution or reduction of natural flow, shall impound runoff as necessary to hold runoff to levels existing prior to the introduction of excavation operations, shall protect streams and grounds from acid forming or toxic materials exposed or produced by excavation operations, shall seal off to the extent directed by the approval authority, any breakthrough of acid water creating a hazard, and shall not allow water to collect nor permit stagnant water to remain in excavations. Wherever possible, the operator shall refrain from disturbing natural drainage course, streams, rivers, and lakes.

(2) All applications for an administrative conditional use permit or a conditional use permit for mineral excavation shall also include a hydrogeologic site evaluation pursuant to chapter 30.62C SCC. The excavation shall identify an adequate separation between the bottom of the excavation and the groundwater table.

(3) Pursuant to SCC 30.32C.220, the approval authority may require summer testing of groundwater levels and quality. (Added by Amended Ord. 02-064, Dec. 9, 2002, Eff date Feb. 1, 2003; Amended by Amended Ord. 05-083, Dec. 21, 2005, Eff date Feb. 1, 2006; Amended by Ord. 07-090, Sept. 5, 2007, Eff date Sept. 21, 2007; Amended by Amended Ord. 15-034, Sept. 2, 2015, Eff date Nov. 1, 2015; Amended by Amended Ord. 21-060, Oct. 6, 2021, Eff date Oct. 22, 2021. Formerly 30.31D.130).