Proposed Tłı̨chǫ All-Season Road Executive Summary March 2016
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Proposed Tłı̨chǫ All-season Road Executive Summary March 2016 Proposed Tłı̨ chǫ All-season Road Project Description Report March 2016 Department of Transportation i Proposed Tłı̨chǫ All-season Road Executive Summary March 2016 EXECUTIVE SUMMARY This project description report (PDR) has been written to accompany the Type A Land Use Permit and Type B Water Licence applications to the Wekʼèezhìı Land and Water Board (WLWB) for development of the proposed T ł ı̨ c h ǫ All-season Road (TASR). These applications are being submitted by the Department of Transportation of the Government of the Northwest Territories (DOT – GNWT). The T ł ı̨ c h ǫ Government supports these applications. This project has been identified as a GNWT commitment under the Proposed Mandate of the Government of the Northwest Territories 2016-2019 (GNWT 2016). Over the years, DOT and T ł ı̨ c h ǫ Government have contemplated the possibility of improved transportation to the Wekʼèezhìı area. In 2011, both governments became reengaged under the T ł ı̨ c h ǫ Roads Steering Committee (TRSC) in order to assess the feasibility, desirability and implications of realigning the T ł ı̨ c h ǫ Winter Road System to provide improved community access. As of May 2013, the vision of the TRSC has been to pursue development of an all-season road. The route would end at the boundary of the community government of Whatì and predominantly follow ‘Old Airport Road,’ an existing overland alignment that was utilized up until the late 1980s as an overland winter road. The proposed TASR is defined as an all-season road approximately 94 km in length and 60 m in width with a cleared driving surface of approximately 8.5 m in width in order to accommodate a two lane gravel road with culverts and/or double lane bridges over water crossings as necessary. This road has been engineered to meet RLU 80 standards, which equates to a design speed of 80 km/h and a posted speed limit of 70 km/h. This design standard will allow for year-round use by commercial and private vehicles according to the size and weight limitations outlined in NWT regulations, such as the Large Vehicle Control Regulations. Traffic levels for the proposed TASR have been estimated at 20 to 40 vehicles per day. This estimate has taken into consideration any potential traffic volumes of a metals mine north of Whatì if it were to begin production and develop a road that meets the TASR. The location of the TASR begins at KM 196 along Highway 3 and continues in a northwesterly direction to the community government boundary of Whatì. The alignment is situated within the geographic coordinates 62°28’54” to 63°10’37” N latitude and 116°29’07” to 117°00’05” W longitude. The proposed footprint is entirely contained within the Wekʼèezhìı area and begins approximately 40 km southwest of Behchokǫ̀ off Highway 3. Approximately 17 km of the road is located on T ł ı̨ c h ǫ lands, while the remainder is located on Territorial lands. There are 15 tributaries along the alignment, which include 4 major bridge crossings: Duport River, an unnamed tributary near KM 45, James River, and La Martre River (Map 1). Environmental and engineering investigations, detailed design studies with the help of LiDAR and topographic surveys, community consultations and stakeholder reviews, economic and socioeconomic reviews, a T ł ı̨ c h ǫ traditional knowledge study and ground truthing have helped in designing the proposed TASR corridor as it is presented in this PDR. Final corridor refinements are anticipated after geotechnical, geochemical and thermal analyses of the route have been completed. Due to the costs associated with the final road analyses, these items can only be completed after funding has been procured for the project. Currently, the project has been accepted for review in Round 7 under the P3 Canada Fund. The Department of Transportation i Proposed Tłı̨chǫ All-season Road Executive Summary March 2016 GNWT is working directly with P3 Canada to finish its assessment. If P3 Canada does not provide funding during Round 7, conventional financing will be considered. REGULATORY APPROVAL If preliminary screening results by WLWB proceed directly to the regulatory phase, the T ł ı̨ c h ǫ Government and other regulatory agencies will issue permits and licences and prepare accompanying terms and conditions. The DOT and T ł ı̨ c h ǫ Government have indicated in a letter to the WLWB (Appendix A) that they are pursuing an access agreement for the 17 km section of road located on T ł ı̨ c h ǫ lands. This letter also affirms that the T ł ı̨ c h ǫ Government will grant the necessary access agreement for any potential borrow sources and access roads located on T ł ı̨ c h ǫ lands. Quarry permits for the four to five borrow sources will be obtained from the Department of Lands. The Territorial Lands Administration (a division of Lands – GNWT) has confirmed a land reserve will not be necessary as the proposed TASR will become a designated highway once complete and because construction will occur with the use of a land use permit. Under the direction of the Prince of Wales Northern Heritage Centre, appropriate archaeological permits will be obtained and any final investigations on borrow sources will be completed. Should explosives be required for blasting within borrow sources or along the proposed corridor, blasting plans will be provided to the appropriate authorities. It is expected that the successful contractors will be responsible for obtaining the necessary permits and licences that will allow them to transport and operate explosives where required. Both community governments of Whatì and Behchokǫ̀ have provided written confirmation that construction related waste can be deposited at their respective landfills. The results of a self- assessment and associated mitigations indicate that a DFO review is not required for this project. The proposed TASR does not require a permit to construct bridges or culverts as the waterbodies within the corridor do not fall under the navigable waters listed in the schedule of the Navigation Protection Act though larger watercourses, in particular the La Martre River, will still be subject to common law public right of navigation. GNWT’s Environment and Natural Resources (ENR) forest management staff have indicated that a timber cutting permit will not be required to clear the TASR corridor in preparation for road construction as the act of clearing a highway right-of-way is deemed to not require a permit. Most of the TASR corridor is already cleared or was involved in recent forest fires. ROAD DEVELOPMENT The proposed TASR has been designed to meet appropriate road standards and will be primarily fill only in order to prevent permafrost degradation. Once geotechnical investigations have been completed, the potential borrow sources that have been identified to date will be further refined to the four to five sources that will be required for construction of the road. Efforts will be made to select borrow sources located on Territorial lands in areas that have been recently disturbed by forest fires in order to reduce the amount of disturbance related to road construction. Though construction specific details are difficult to determine because financing has not yet been procured and therefore the type of construction method (design-build vs. conventional) cannot be established, it is expected that construction will be year-round and is estimated to take up to four years to complete. Two to three 150-person camps will be set up within borrow sources to minimize the development footprint. It is expected that only one camp will be operated at a time. ii Department of Transportation Proposed Tłı̨chǫ All-season Road Executive Summary March 2016 Map 1 Proposed Tłı̨chǫ All-season Road (TASR) Corridor from Highway 3 to the Whatì Community Government Boundary Department of Transportation iii Proposed Tłı̨chǫ All-season Road Executive Summary March 2016 Water usage, including camp operation, is expected to be less than 99 m3/day; however, a Type B water licence will still be required as there are water crossings larger than 5 m across. Wastewater is expected to be stored in a large watertight tank and will be trucked to Behchokǫ̀ ’s sewage lagoon on a daily basis. No raw sewage, treated effluent or other wastewater will be discharged on the land. Solid waste management will include incineration and temporary storage and removal to appropriate facilities in Behchokǫ̀ and Whatì. Hazardous waste will also be removed to approved facilities. Further waste details are described in the draft Waste Management Plan (Appendix N). All fuel will be stored in double-walled tanks or will have secondary containment and all personnel will adhere to the project’s Spill Contingency Plan to prevent possible contamination to the environment. Table 1 describes the bridge and culvert structures that will be required for the TASR. In addition to the structures listed, it is expected that small diameter equalization culverts will also be required every 500 m. Details and 1:2,500 maps of the current road design can be reviewed in Appendix G. Table 1 Required Bridges and Culverts within proposed TASR corridor Crossing ID Crossing KM Bridge Description; Length 8 40.4 Duport River; 48 m 9 45.2 Unnamed tributary; 24 m 14 68.7 James River; 80 m 15 85.4 La Martre River; 100 m Crossing ID Crossing KM Culvert Description 1 2.0 and 2.4 1x900 CSP and 1x1200 CSP 2 3.2 2x1400 CSP 3 7.9 2x1400 CSP 4 13.2 3x1400 CSP 5 16.5 1x2430 SPCSP 6 19.4 2x2430 SPCSP 7 23.6 2x1400 CSP 10A 48.2 3660x1910 Arch Culvert 10 48.3 1x1200 CSP 11 54.5 2x1400 CSP 12 56.6 1x1000 CSP 13 62.7 3x1400 CSP Note: CSP = corrugated steel pipe; SPCSP = structural plate corrugated steel pipe CONDITIONS ALONG THE PROPOSED TASR The proposed TASR is located within the Taiga Plains, which is located within the zone of discontinuous permafrost.