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warehouse yard pad. Please refer to Map 27 for the location of the haul road. <br />• The new road will be surfaced with a durable material, as discussed above, capable of handling the anticipated vehicle <br />load. It is anticipated that tandem trail highway trucks will be using the road. <br />The Mine will provide the Division with [he results of surfacing material durability testing and haul road stability <br />design parameters, for the Division's approval, prior to reconstruction of haul road A and the haul road adjacent to the <br />warehouse. The Mine will also provide professional certification for these haul roads prior to the roads being placed <br />in use as haul roads. <br />Upon completion of mining, haul road A will be reclaimed by removing the surfacing material and small fills and <br />blading the road to blend in with the surrounding topography. The culverts will be removed and disposed of in <br />accordance with local regulations. The area will be seeded with the rangeland seed mixture. The haul road adjacent <br />to the warehouse storage yard pad will be reclaimed during reclamation of the No. 5 pad. The fill material will be <br />used in backfilling the portal area and then the area will be topsoiled and seeded with the appropriate seed mixture. <br />RAG Empire is planning on leaving a number of roads at the site after completing mining and reclamation activities. <br />These permanent roads are shown on Map 29, Reclamation Plan. The roads are required to provide access to the <br />reclaimed areas to facilitate the post-mining land use. As is shown on Map 29, these roads will provide access into <br />the irrigated haylands along the Williams Fork River, the pastureland/cropland at the former No. 9 portal/refuse area, <br />the rangeland/wildlife area at the former No. SA portal area, and the rangeland/wildlife areas at the former refuse pile. <br />The majority of these roads are former haul roads and county roads vacated to RAG Empire. The roads will be <br />adequate to support the post-mining land uses. <br />Ponds, Impoundments, and Diversions <br />RAG Empire has designed and constructed a system of ponds, ditches, and embankments to retain runoff from its <br />disturbed areas throughout the mining operation. Each pond and structure was designed and constructed under the <br />supervision of a qualified, registered professional engineer. All ponds, ditches, and culverts were designed by <br />Mineral Resources and Engineering, Inc. <br />The general system layout is shown on the Drainage and Sediment Control Map (Map 26) which presents a total of 23 <br />dams or embankments which were constructed to control runoff from disturbed areas or to serve as settling ponds for <br />mine discharge water. A series of ditches and culverts were designed as a part of this system to convey, transfer, and <br />gather the runoff Each sedimentation pond has been designed for the 10 year/24 hour precipitation event and to meet <br />all requirements under the performance standards of Section 4.05 Hydrologic Balance. The design methodology and <br />design calculations used for all ponds, ditches, culverts, and the bridge crossing the Williams Fork River are included <br />in Exhibit 18, Drainage and Sediment Control Plan. Pond 9A-PI is planned as the only permanent impoundment <br />under this permit. <br />All of the sediment 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. The pond inspection during this period includes observing water <br />elevation in relation to discharge structure elevation. If the water elevation is higher than the discharge stnrcture <br />elevation the gate is opened and the pond allowed to dewater to the invert of the discharge structure. The gate is <br />closed and the pond readied to accept the next runoff event. At the time the pond is dewatered water samples are <br />taken in accordance with the discharge permit requirement. Typically only the HR pond and 9A-PI discharge during <br />the spring runoff period or in response to major thunderstorms. <br />As shown in Exhibit 18 (page 13 and on Map DWG I V-42) Pond 9A-Pl does not meet the size requirements of 4.05.9 <br />(3) but is adequately designed to serve as a stock pond which is its intended post-mine land use. Nine (9) years of <br />^^ -,- '•; <br />MidTerm Response 2.05-19 ~~~~"`~""~'~'rJ'~~ 'R'erisedY2~~~/ I <br />