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Regular Board of County Commissioners Meeting -Grand County, Colorado <br />May 19, 2009 <br />Page 10 of 18 <br />each twenty (20) acres corresponding with the allowance of a new twenty (20) acre block. ?All structures, <br />excavations, equipment, stockpiled materials and other items commonly connected with gravel extraction <br />operations shall not expand beyond this twenty (20) acre block. ?The proposed uses within the twenty (20) <br />acre disturbance area may include but are not limited to: wash plants, concrete plants, asphalt plants, crushers, <br />stripping, mining, gravel processing (screening), storage, hauling, maintenance facility and all equipment <br />necessary to run the pit in an efficient manner. Currently, the County is in the process of permitting the entire <br />92.38 acres with a state mining permit. ?A Regular Operations 112 Permit shall be provided prior to issuance <br />of the Special Use Permit. <br />Product from the gravel pit will be used for maintaining County roads and other projects as needed. This will <br />be a dry mine that will be mined on a limited basis each year. In most cases, crushing will happen once a year <br />for approximately four (4) to six (6) weeks, and hauling operations may occur at anytime during the spring, <br />summer and fall. Hauling will depend on the project, for instance graveling a major road may take as long as <br />three (3) to four (4) weeks of sustained hauling, and for routine road maintenance the hauling would be limited <br />to one (1) or two (2) days a week as needed. Peak hauling days will see approximately five (5) belly dump <br />trucks and two (2) or three (3) tandem trucks at eight (8) trips each per day. <br />Stripping will begin once the gravel in the area being mined is running out. During a normal mining and <br />processing cycle approximately 40,000 tons of gravel is stockpiled. When this is done the working face is <br />sloped 2 to 1 and revegetated, the processing plant is removed and the only activity is when the gravel is being <br />hauled from the mine area. There can be as many as four (4) mining/processing cycles in any given year <br />depending on the need for gravel on the County roads. The proposed crushing and hauling hours are 6:30 a.m. <br />to 5:00 p.m. Monday through Saturday. ?However, standard SUP operating hours for gravel pits is 7:00 a.m. <br />to 7:00 p.m. Therefore, Staff believes these hours should apply to this pit as well. <br />The gravel in this area is from sixty (60) to eighty (80) feet deep so it is estimated that it could take forty (40) to <br />fifty (50) years to mine the entire site. The applicant is requesting the Permit term be for a minimum of 10 (ten) <br />years, May 2009 to May 2019. However, the BOCC historically approves a minimum 5 (five) year SUP permit <br />for gravel pits. ?Staff believes that Grand County should comply with the same restrictions as applied to <br />others, and recommends a permit term from May 2009 to May 2014. ?The Applicant should also reserve the <br />right to operate outside the bounds of time and date due to emergency situations. <br />Since this proposed pit is near a recreation area, Williams Fork Reservoir, visual mitigation is important to <br />ensure adjacent properties and tourist have uninterrupted views. ?Therefore, no skylining of equipment, <br />vehicles, structures, or any of the permitted uses associated with this gravel operation shall be allowed, except <br />for equipment and trucks entering and exiting the pit. Skylining is defined as: any parking, storing and locating <br />of any equipment, vehicles, structures and any of the permitted uses associated with this gravel operation, on <br />high elevations within the 92.38 acres that from any vantage point will break up the natural ridge line of sight. <br />The following list of equipment has been provided by the Applicant and is necessary to operate the gravel pit, <br />however ?Staff believes that any equipment necessary to adequately operate the gravel pit shall be allowed. <br />• Cone Crushers <br />• Jaw Crushers <br />• Control Van Trailers <br />• Maintenance Van Trailers <br />• Gen-Set Van Trailers <br />• Wheel Loaders <br />• Track Dozers <br />• Track Excavators <br />• Screen Decks <br />• Portable Conveyors <br />• Maintenance Pickups <br />COMPLIANCE WITH GRAND COUNTY MASTER PLAN <br />An integral component of the Master Plan with respect to the proposed use is environmental quality. <br />Gravel extraction operations are regulated by the Colorado Division of Minerals and Geology, Mined Land <br />Reclamation Board, Colorado Division of Natural Resources and are required to manage erosion and sediment, <br />drainage, water quality and air quality.