2013-12-17_PERMIT FILE - C1992081 (19)

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Power Plant. The TAHR was originally approved as part of the Seneca II -W Permit No. C1982 -057 and was transferred to HGT as part of PR -01 (approved 12/4/2011). The TAHR begins at the junction with HGLF -HRI at approximate station 25 +90 located before the original entrance gate (see Exhibit 12 -2 and 12 -5A) and proceeds westward approximately 4.1 miles to the intersection with Routt County 5 1 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 designs summaries for the road ditches while Table 12 -2A contains the culvert design summaries. Appendix 12 -6 contains the details of the design and the as-built report. The plans and profiles are shown in Exhibit 12 -6, Tie - Across Haul Road As -Built (8 sheets). Access Road: Access road HGLF -ARl was originally constructed by the previous owner /operator /permittee H -G Coal Company. The access road is approximately 20 to 30 feet wide; drainage from the road is controlled by Ditch No. 1 and the Leach Field SAE. HGTI was unable to locate any design or construction documentation in the project files, however it is assumed that the road was designed and constructed in accordance with CDRMS regulations as describes in Appendix 12 -3. HGTI conducted a survey of access road HGLF -AR1 in May 2006. The survey data were used to develop a profile of the existing conditions. The profile is presented in Appendix 12 -5 as Dwg. 12 -5C, Facilities Area Access Road Plan and Profile. This appendix was prepared in accordance with Rule 4.03.2(1)(f)(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 Dwg. 12 -5C only pertained to the existing conditions. HGTI assumed that because there had been no CDRMS concern or issue in past monthly compliance inspection reports or other permit reviews since 1992, the access road is in compliance with performance standards of Rule 4.03.2. The access road was reclaimed along with the facilities area in 2011 except for a short section, approximately 200 feet, which serves as access to the office trailers and parking lot. See Exhibit 12 -2, Surface Water Control Map, for plan view of the remaining portion of the road. Railroad Spur and Loop: The Hayden Gulch railroad spur begins approximately 0.3 miles east of the easterly city limits of Hayden, Colorado. As shown on Exhibit 12 -1, it extends approximately two miles in a southerly direction to the recently reclaimed coal handling facilities area. The approximately track length is of the spur and rail loop 3.3 miles (17,400 linear feet). The purpose of the of the railroad spur is to provide a connection to the existing Union Pacific mainline track for transporting coal in rail cars in/out of the Hayden Gulch Loadout area. A reprint of the Railroad Spur Typical Section is shown as Figure 12 -2, Profile and Section for Railroad Spur (this figure was originally included in the H -G Coal Company permit package [Permit C -80 -003; Volume 11 Exhibit J]). The railroad spur alignment begins with an eastbound connection to the Union Pacific mainline trackage and heads in the southerly direction, crossing Highway 40 approximately 1,500 feet east of the Hayden, Colorado city limits. The railroad spur alignment continues in a southerly direction paralleling the east side of Routt County Road 37, and crosses the TR -10 11 Revised 02/13