Mining is the removal and primary processing of naturally occurring materials including sand, gravel, rock, soil, peat or precious metals for economic use. Mining activities also include in-water and in-channel dredging activities related to mineral extraction.
(1) The following general regulations apply to mining activities in shorelines:
(a) Mining activities are allowed in shoreline jurisdiction only when necessary as an integral part of the following project types:
(ii) Flood hazard management, provided that:
(B) A geotechnical or engineering analysis demonstrates that the proposed mining will result in long-term flood hazard reduction benefits;
(A) The mining activity is the minimum necessary to alleviate the emergency situation;
(iv) Mineral extraction and use for forest practices, provided that:
(A) The mining activity is conducted more than 200 feet from the ordinary high water mark of shorelines of statewide significance; and
(v) Removal of mineral resources deposited above the ordinary high water mark by flood events onto designated agricultural lands under the county’s comprehensive plan for the purpose of maintaining or restoring land for agricultural activities; or
(b) Removal of mineral resources shall comply with the following standards:
(i) The mining activity shall not occur in critical saltwater habitat, primary association areas for critical species, or in salmonid spawning habitat except in conjunction with an approved habitat restoration or enhancement project;
(iii) Mining activities shall not result in channelization of normal stream flows, interfere with natural hydraulic processes such as channel migration, undermine existing structures or downstream stream banks, or increase risk of stream avulsion;
(v) Mining activities waterward of the ordinary high water mark of a river, including bars and islands, shall not be permitted unless:
(A) Removal of specified quantities of sand and gravel or other materials at specific locations will not adversely affect the natural processes of gravel transportation for the river system as a whole;
(C) The determinations made pursuant to SCC 30.67.560(1)(b)(v)(A) and (B) shall be made consistent with RCW 90.58.100(1) and WAC 173-26-201(2)(a). Such evaluation of impacts should be appropriately integrated with relevant critical area and environmental review requirements pursuant to chapters 30.61, 30.62A and 30.62B SCC; and
(D) In considering renewal, extension or reauthorization of gravel bar and other in-channel mining operations in locations where they have previously been conducted, the department shall require compliance with the SMP and chapter 30.31D SCC.
(f) Proposed subsequent use of mined property shall be consistent with the provisions of the shoreline environment designation in which the property is located and reclamation of disturbed shoreline areas shall restore all shoreline ecological functions adversely impacted by the mining activities.
(a) Mining activities allowed pursuant to SCC 30.67.560(1)(a) are conditionally permitted in all shoreline environments, except that mining activities related to forest practices as described in SCC 30.67.560(1)(a)(iv) are permitted in the Resource and Municipal Watershed Utility environments unless subject to a conditional use permit pursuant to SCC 30.67.560(1)(e).
(b) Except when allowed pursuant to SCC 30.67.560(1)(a), mining activities for the sole purpose of obtaining fill or commercial sale or processing of mineral resources are prohibited in all shoreline environments.
(c) Non-conforming mining activities are subject to the requirements in SCC 30.44.125. (Added by Amended Ord. 12-025, June 6, 2012, Eff date July 27, 2012).