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Article 4: 4 -508 Mining Uses <br />4 -508 Mining Uses <br />A. Limited Impact Open Mining <br />1. Definition: The extraction of earth materials by mining directly from the exposed deposits or other materials <br />where mining operations affect less than ten acres of land within a parcel and extract less than 70,000 tons of <br />earth materials, and which (a) proposes to export material in excess of 500 cubic yards off the parcel on which <br />the mining occurs, (b) has operations that exceed five consecutive days or 14 days total, and /or (c) utilizes <br />blasting. <br />2. Districts Permitted: By limited impact special review in all districts <br />3. Parking Requirements: To be decided through special review <br />4. Loading Requirements: To be decided through special review <br />5. Additional Provisions: <br />a. Exceptions to this use include: <br />(i) The removal of decorative building materials naturally exposed at the surface of the earth. <br />(ii) The extraction of sandstone where such extraction does not exceed a total of 3600 tons in any 12 <br />month period. For the purposes of this provision, sandstone is defined to be a hard, well- bedded <br />sedimentary rock known locally as the Lyons sandstone. This material is principally used as a building <br />stone; however, included in the definition of sandstone are waste materials, removed in the process <br />of exposing /extracting usable building stone. <br />(iii) Excavations below finished grade for basements and footings of a building, retaining wall or other <br />structures authorized by a valid building permit, or authorized by a grading permit. <br />b. The term limited impact open mining includes, but is not limited to, such processes as open cut mining, <br />open pit mining, strip mining, quarrying and dredging. <br />c. This use shall also be granted and maintain all applicable local, state, and federal permits. <br />B. Oil and Gas Drilling or Production, on subdivided land <br />1. Definition: Any operation utilizing equipment which advances a bore hole into substrata for the purpose of <br />discovery, development, and /or production of oil or gas. <br />2. Districts Permitted: By development plan review for oil and gas operations in all districts (4 -900) <br />3. Parking Requirements: None <br />4. Loading Requirements: None <br />5. Additional Provisions: None <br />C. Oil and Gas Drilling or Production, on unsubdivided land <br />1. Definition: Any operation utilizing equipment which advances a bore hole into substrata for the purpose of <br />discovery, development, and /or production of oil or gas. <br />2. Districts Permitted: By development plan review for oil and gas operations in all districts (4 -900) <br />3. Parking Requirements: None <br />4. Loading Requirements: None <br />5. Additional Provisions: None <br />D. Open Mining <br />1. Definition: The extraction of earth materials by mining directly from the exposed deposits or other materials. <br />Exceptions to this use include those operations which fit the definition of limited impact open mining and <br />excavations below finished grade for basements and footings of a building, retaining wall or other structures <br />authorized by a valid building permit. The term open mining includes, but is not limited to, such processes as <br />open cut mining, open pit mining, strip mining, quarrying and dredging. <br />2. Districts Permitted: By special review in F, A, GI, and MI <br />3. Parking Requirements: To be determined through special review <br />4. Loading Requirements: To be determined through special review <br />5. Additional Provisions: <br />a. This use is not required to be located on a building lot, or comply with the minimum lot size requirement <br />for the district in which it is located. <br />b. This use shall also be granted and maintain all applicable local, state, and federal permits. <br />c. Processing of the mined material (to the extent approved through the special use process) may occur on <br />the parcel where the mining is situated, or on a parcel owned or leased by the mining parcel owner, lessee, <br />or operator provided the parcel is located within 1,000 feet of the mining parcel. <br />4 -102 Boulder County Land Use Code • May 3, 2011 <br />