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RULE 4 PERFORMANCE STANDARDS <br />4.02.4 Duration of Maintenance <br />Colowyo will maintain signs and markers throughout the life of the operation or post new signs <br />and markers as necessary. <br />4.02.5 Stream Buffer Zone Markers <br />All major operations near Good Spring Creek have ceased. Stream buffer zone signs have been <br />posted as appropriate. Stream buffer zone signs will also be placed along Taylor Creek and Jubb <br />Creek as deemed appropriate. <br />4.02.6 Blasting Signs <br />Colowyo displays signs reading "Blasting Area" along any blasting area that comes within 50 feet <br />of any road within the permit area or within 100 feet of any public road right-of-way. The blast <br />warning and all -clear signals are clearly explained at the main entrance to the permit area from <br />Highway 13/, where the Collom paved haul road crosses Moffat County Road 51, at the entrance <br />to Lower Wilson along Moffat County 51, at the entrance to the Upper West Fork of Good Springs <br />Creek, and at the Jubb Creek entrance on Moffat County Road 32. <br />4.02.7 Topsoil Markers <br />Colowyo clearly marks all stockpile topsoil with signs reading "Topsoil." <br />4.03 Roads <br />The following sections deal with roads defined per Rule 1.04 (111). <br />4.03.1 Haul Roads <br />Haul roads at the Colowyo operation will be utilized and maintained to control or minimize <br />erosion, siltation, air and water pollution, and damage to public or -private property. The main Haul <br />Road A for the Colowyo operation is shown on Maps 21 and 25G. The main Haul Road A runs <br />from the pit area (traffic crossover) to the Gossard Loadout; the approximate length of this haul <br />road is four miles. The profile for haul road A is shown on the Haul Road "A" Profile (Map 25). <br />The Haul Road B runs from State Highway 13 west to where it intersects Haul Road A and is <br />shown on Existing Structures - North Map (Map 21) and Haul Road "B" Profile (Map 25A). The <br />approximate length of the road is 1.4 miles. <br />The roads used in the actual mining area constantly change as the operation progresses. The "in - <br />pit" roads are maintained by a motor grader and are regularly wetted to minimize dust. Any <br />drainage off the "in -pit" roads will be retained in the pit or diverted to the drainage and sediment <br />control structures located on the Hydrology - South Map (Map 12). The reclamation timeline is <br />shown on Map 29 — Spoil Grading. Reclamation will include regrading the road embankments <br />and ditches and recontouring the road to the approved AOC as shown on Map 19 — Post Mining <br />Rule 4 Performance Standards 4-2 Revision Date: 5/25/18 <br />Revision No.: RN -07 <br />