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The testing procedure for determining adequacy of road base will require that, prior to testing, the upper 8 inches be <br />scarified and re- compacted. The material will be compacted to 95 percent standard Proctor and the road will be proof - <br />rolled to determine if any soft spots exist that will require additional work. The Mine will provide the Division with <br />the results of surfacing material durability testing and haul road stability design parameters, for the Division's <br />approval, prior to reconstruction of Haulroad A. The Mine will also provide professional certification for the <br />haulroad(s) prior to the roads being placed in use. Once this is completed, the road will be re- surfaced with durable <br />material, such as crushed red rock or gravel, capable of handling the anticipated vehicle load. The road surface will <br />have a minimum width of 20 feet, and drainage will be provided by grass lined borrow ditches which already exist <br />along most of the length of the road. <br />If coal haulage resumes, a connecting haulroad would be constructed to the north of the existing Warehouse Yard, as <br />shown on Map 27. Prior to construction, soil would be salvaged (estimated at approximately 325 cy) and stockpiled <br />in the existing stockpile northeast of the Warehouse Yard. The souther toe of the existing soil material stockpile <br />would be removed and the soil placed further to the north of the pile. Fill material (approximately 500 cy) would be <br />hauled in to bring the road up to its design grade. The fill material would be obtained from the overburden stockpiled <br />adjacent to the refuse pile. The road would be extended from the existing rock -dust tank pad and connect with the <br />Coal Laboratory parking area. The existing culvert would be extended under the road, and a rock headwall or similar <br />type structure would be constructed around the outlet. A 16 -inch culvert would be placed under the haul road to drain <br />water that will collect in the low area between the haul road and the Warehouse Yard pad. <br />Upon completion of mining, Haulroad A will be reclaimed by removing the surfacing material and small fills and <br />blading the road to blend with the surrounding topography, culverts will be removed and disposed of, and the <br />associated disturbance areas he area will be re- seeded with the rangeland seed mixture. The haulroad adjacent to the <br />Warehouse Yard pad will be reclaimed during reclamation of the No. 5 pad. The fill material will be used in <br />backfilling the portal area and the area will be topsoiled and seeded with the appropriate seed mixture. <br />MCM plans to retain several roads to support postmining land uses, following completion of mining and reclamation <br />activities, as shown on Maps 29 and 29A, Reclamation Plan. These roads include the main entrance road from State <br />Highway 13, a section of the old highway, and a connecting road, and will provide access into the irrigated haylands <br />along the Williams Fork River, the pastureland/cropland at the former No. 9 portal/refuse area, and the <br />rangeland/wildlife areas at the former No. 5A portal area and the former refuse pile. The majority of these roads are <br />former haulroads and County roads transferred by the previously referenced County agreement which are on MCM - <br />or State -owned lands. Prior to application for bond release, MCM will submit a revision requesting permanent <br />retention of roads and documentation in compliance with the applicable provisions of Rule 4.03, from the affected <br />surface landowners of their concurrence. <br />Ponds. Impoundments. and Diversions <br />A system of ditches, embankments, and ponds, have been designed and constructed to retain runoff from disturbed <br />areas throughout the mining operation. All ditches, culverts, and ponds were designed by Mineral Resources and <br />Engineering, Inc. and each pond and structure was designed and constructed under the supervision of a qualified, <br />registered professional engineer. <br />The general drainage system layout is shown on the Drainage and Sediment Control Map (Map 26), and includes a <br />total of 23 dams or embankments which have been constructed to control runoff from disturbed areas, or to serve as <br />settling ponds for mine discharge water. A series of ditches and culverts were designed as a part of this system to <br />gather and convey runoff flows. Each sedimentation pond has been designed to retain and treat runoff from the 10- <br />year /24 -hour precipitation event and to meet all requirements under the performance standards of Section 4.05 <br />Hydrologic Balance. The design methodology and calculations used for all ditches, culverts, and ponds, and the <br />bridge crossing the Williams Fork River are included in Exhibit 18, Drainage and Sediment Control Plan. Pond 9A- <br />PI is the only permanent impoundment currently identified for retention under this permit. <br />All of the sedimentation ponds, excluding the treatment facilities (No. 5 and 9 dewatering system and waste water <br />treatment system), are dewatered manually. This process requires visual inspection of the ponds during the runoff <br />season or after significant precipitation events. Pond inspections under runoff conditions include observing water <br />TR14 -36 2.05 -16 Revised 09/08/14 <br />