2017-07-11_PERMIT FILE - C1981019A (3)

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RULE 4 PERFORMANCE STANDARDS A facilities access road will be constructed to allow equipment, supplies, and manpower to access the Collom facilities area during construction, since the Collom facilties area construction will occur concurrently with the construction of the Collom haul road. The facilitaties access road will be constructed in accordinace with Volume 18, Exhibit 7, Item 23, Figures D3 and D4. Any outslopes created from the construction of this access road will be seeded with the mix listed below, post construction. At the entrance to Jubb Creek off of Moffat County Road 32, an access road will be established from the temporary facities area to where it ties into the Collom haul road. This access road will allow equipment, supplies, and man power to access and egress during the development of the Collom haul road and Collom factilites area. The Jubb Creek access road will be constructed in accordance with Volume 18, Exhibit 7, Item 23, Figure D5. Any outslopes created from the construction of this access road will be seeded with the mix listed below, post construction. All access roads are designed to meet the standards of CDRMS Rule 4.03.2 for Access Roads. They are specifically designed to meet the minimum design requirements while minimizing additional disturbed area and preventing environmental damage. Additional discussions of these access roads may be found under Section 2.05.3(3). The access road cut/fill stabilization seed mix is as follows: Western wheatgrass @ 4 Lbs PLS/Acre Mountain Brome @ 4 Lbs PLS/Acre Kentucky Bluegrass @ 2 Lbs PLS/Acre Sanfoin @ 2 Lbs PLS/Acre Total 12 Lbs PLS/Acre Following construction, a report by a registered professional engineer shall be provided to the Division indicating that the roads have been built as designed. Following mining activities, the access roads may be request to remain in place as a private ranch road and therefore would not be reclaimed. Should the access roads be requested to remain post -mining, the applicable surface owner and Colowyo will provide the Division with a letter documenting this request at the appropriate time. 4.03.3 Light -Use Roads Light roads may be used in portions of the Collom permit expansion area. Typically, these roads are existing ranch or two track roads that were exisiting prior to the development of the Collom operation. Construction and maintenance of these roads are discussed in the Volume 1, Section 4.03.3. 4.04 SUPPORT FACILITIES The original support facilities used at the mining operation, including the office, shop and warehouse complex, and the coal handling and loadout facilities may continue to serve as minor support facilities for this expansion and are shown within the original Colowyo Permit Map 21 and Map 22, Volume 8. Many of the support structures were constructed at the mine start-up in 1976-1977. The complete discussion on all the original support facilities is found under Sections 2.05.3 and 4.04 in Volume 1. The Collom area facilities will include an administration building, shop and warehouse facility, coal crushing, explosives bunker, sedimentation ponds, utility lines, water lines, and haul roads that will be constructed near the Collom Pit area. These facilities are detailed in the Structure and Facilities Map 22B. Collom — Rule 4, Page 3 Revision Date: 3/3/16 Revision No.: TR -108