Mining, Excavation means a use that extracts rocks, minerals, and other natural resources from the ground. Mining, Excavation only includes borrow pit, rock extraction, and gravel mining.
1. Where Mining, Excavation is allowed as a limited use, it must satisfy the following standards:
a. It must be recommended as appropriate in the applicable master plan, be in existence before 1958, and have a maximum of 4,000 square feet of enclosed structures in the aggregate; and
b. It includes the extraction, processing, storage and sale of mineral resources and products (which may include incidental sales of mineral resources not extracted on the premises), and accessory uses such as a storage yard, a facility for the maintenance and repair of equipment, a loading facility, crushing, mixing, washing and screening of stone quarried on-site, stone works for the cutting and polishing of dimensional stone, and sale of equipment and building supplies associated with the installation of mineral products.
c. Mining, Excavation that is recommended as appropriate in the applicable master plan, is in existence before 1958, and has a minimum of 4,000 square feet up to a maximum of 7,500 square feet, in the aggregate of enclosed structures requires conditional use approval under Section 7.3.1. The conditional use standards in Section 3.6.5.B.2 do not apply.
2. Where Mining, Excavation is allowed as a conditional use, it may be allowed by the Hearing Examiner under Section 7.3.1, Conditional Use, if the use is recommended for the site by the applicable master plan, and the following standards:
a. The lot area has been determined by the sum of the area to be extracted plus that area required to meet the minimum setback standards, or the area required to meet the performance standards of the zone, whichever is greater; however, the minimum lot area is 10 acres.
b. A maximum of 10% of the lot is covered by buildings, including accessory buildings.
c. All quarries, pits, open mines, processing plants, screening, sorting, storage, stoneworks, stone cutting, stone polishing, loading, batching, mixing, maintenance, service and repair equipment, facilities and structures will be set back from property lines an amount sufficient to achieve the performance standards established by the Hearing Examiner.
d. Access to a public road must be available.
e. The maximum height of a building or structure is 90 feet above the natural grade of the portion of the site upon which the building or structure is situated,but facilities for rail loading abutting the right-of- way of a railroad are permitted to extend to a height of 25 feet above the grade of the railroad at the property line abutting the railroad right-of- way.
f. A minimum of 25% of the lot area designated for mining and excavation will be maintained in open space, including required buffer areas, landscaped or planted berms, forested areas, or areas devoted to agriculture.
g. Access roads, security patrol roads, railroad sidings, identifications, directional and safety warning signs, security fences and acoustical or visual screens, berms, or walls are permitted within the setback area.
h. The use is valid for a maximum of 3 years, and the use may be renewed by the Hearing Examiner.
i. In the AR zone, this use may be prohibited under Section 3.1.5, Transferable Development Rights.
(Legislative History: Ord. No. 18-08, § 6.)