2011-11-28_PERMIT FILE - C1992081A (10)

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HR1A Plan and Profile. These exhibits have been prepared in accordance with Rule 4.03.1(1)(d)(ii), which allows a relevant showing in lieu of certification of design and construction for roads constructed prior to August 1994. As such, the certification on these exhibits only pertains to the existing conditions. HGTI assumes that between the 1986 certification statement, as well as the lack of CDRMS concern or issue documented in any monthly compliance inspection report or other permit review since 1992 demonstrates that the haul roads are in compliance with the performance standards of Rule 4.03.1. As part of the 2,000,000 ton per year coal handling revision HGTI will construct the truck loadout haul road (HGLF -HR2). The road has been designed and will be constructed in accordance with CDRMS regulations as described in Appendix 12 -3. The location and layout of HGLF -HR2 are shown on Exhibit 12 -5, Haul Road HGLF -HR2. The proposed road is approximately 861 feet in length. The alignment extends from the TAHR north towards the rail loop; at approximately stationing 2 +45 the haul road turns to the west and loops through the truck loading structure and then ties back into the TAHR at stationing 8 +61. Runoff collection ditches will be constructed on either side of haul road HGLF -HR2 (see Exhibit 12 -5 for the ditch configurations and design summaries). Ditch design demonstrations are presented in Appendix 12 -4. There will be four culverts installed as part of the construction of haul road HGLF -HR2, while a fifth culvert will be modified (see Exhibit 12 -5, Haul Road HGLF -HR2). The culvert design demonstrations also are presented in appendix 12-4. The Tie - Across Haul Road (TAHR) was designed and constructed during 1989 in preparation for coal haulage in 1990 from the Seneca II -W Mine area to the Hayden Station Power Plant. The TAHR was originally approved as part of the Seneca II -W Permit No. C- 1982 -057 and is being transferred to HGT as part of PR -01. The TAHR begins at the entrance to the Routt County Road and Bridge Equipment Shop and proceeds approximately 4.1 miles easterly to the intersection with RCR 51 B on the coal haul entrance to the Hayden Station. All salvageable topsoil was removed from the disturbance area and stockpiled. Table 12 -1A contains the ditch design summaries for the road ditches along the TAHR, while Table 12 -2A contains the culvert design summaries. The as -built construction summaries and calculations are contained in Attachment 12 -1, Existing Facilities Area Description and the As -Built plan and profile drawings are included as Exhibit 12 -6. Access Roads: There is one access road (HGLF -AR1), designed and constructed by the previous owner /operator /permittee (H -G Coal Company), within the permit area. Access road HGLF -ARI starts from haul road HGLF -HRI at approximate stationing 24 +84 and runs west and north of, and parallel to, haul road HGLF -HR1A as the roads go past the PR -01 10 Revised 7/11