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HomeMy WebLinkAboutU-5026_NEPA_4A_SignedNEPA/404 MERGER TEAM AGREEMENT Concurrence Point No. 4A: Avoidance and Minimization Measures PROJECT DESCRIPTION: Sunset Avenue (SR 1770) Interchange and Improvements Nash County STIP Project No. U-5026 STIP Project # U-5026 involves converting the existing Sunset Avenue (SR 1770) grade separation with 195 to an interchange; widening Sunset Avenue between Old Carriage Road (SR 1603) and Halifax Road (SR 1544); and extending the existing collector -distributor along I-95 at US 64 to the south of the proposed interchange. The proposed project is in Rocky Mount, which is located in eastern Nash County. Avoidance and Minimization Avoidance and minimization measures are described for the jurisdictional resources in the August 21, 2019 Concurrence Point (CP) 4A merger packet and summarized below. Additional minimization may be achieved during final design, when hydraulic design (CP 4B and 4C) and utility relocation design commence. Measures to avoid and minimize impacts to potential jurisdictional waters of the US were incorporated into the best fit design of the project. The presence of residential and commercial buildings, existing structures, and utility transmission lines were also taken into consideration. As designs are refined, reductions to stream and wetland impacts are anticipated. Opportunities for avoidance and minimization were limited due to the nature of the project and the location of the potentially jurisdictional resources located in the vicinity of the project. The preliminary design includes a 17'6" median instead of a 23' median where possible, east of the roundabout at Nash Community College along Eastern Avenue/Sunset Avenue, to reduce the project footprint. During the August 21, 2019 Concurrence Point 4A Merger Meeting, the Merger Team requested supplemental information regarding design decisions and avoidance and minimization efforts. Accordingly, the following table acknowledges the impacted features and characterizes the related constraints and/or minimization efforts incorporated into the proposed project. Summary of Design Constraints and Avoidance and Minimization Env. Feature Impacting Design Design Constraint or Minimization/ Avoidance Feature Effort Wetland B SB entrance ramp Ramp/loop must be placed in southern quadrants due to ramp spacing requirements Wetland J Freight Rd tie Minor widening at project tie; impacts may be eliminated in final design Wetland L Southern terminus of Wetland pocket runs adjacent to I-95 corridor; SB C-D road impacts by C-D road unavoidable Wetland O Southern terminus of Wetland pocket runs adjacent to I-95 corridor; NB C-D road impacts by C-D road unavoidable Wetland BA SR 1770 widening Wetland pocket located north of existing road; widening is proposed more to the south in an effort to minimize impacts Wetland BB SR 1770 widening just Grade dictated by vertical clearance requirements east of I-95 for I-95 bridge; existing RR bridges along I-95 resent southern constraint Wetland BD SB C-D road Wetland pocket runs adjacent to I-95 corridor; impacts by C-D road unavoidable Wetland BE SB C-D road Wetland pocket runs adjacent to I-95 corridor; impacts by C-D road unavoidable Wetland BF SB entrance ramp Ramp/loop must be placed in southern quadrants due to ramp spacing requirements Wetland BJ Southern terminus of Wetland pocket runs adjacent to I-95 corridor; SB C-D road impacts may be eliminated in final design Wetland BK NB C-D road Wetland pocket runs adjacent to I-95 corridor; impacts by C-D road unavoidable Wetland BM SR 1770 widening Proposed U-turn bulb -out located to serve Ben Layton Circle; bulb -out could potentially be shifted to west to avoid impact Wetland BN SR 1770 widening Located opposite Stream B; alignment avoids residential relocations on Gardenia Cir Wetland T NB C-D road Wetland pocket runs adjacent to I-95 corridor; impacts by C-D road unavoidable Stream B SR 1770 widening Located opposite Wetland BN; design avoids residential relocations on Gardenia Cir Stream C SB C-D road Located immediately adjacent to I-95 corridor; impacts by C-D road unavoidable Stream D SR 1770 widening just Horizontal layout to achieve deflection at east of I-95 roundabout; grade dictated by vertical clearance requirements for I-95 bridge Stream E SB entrance ramp Ramp/loop must be placed in southern quadrants due to ramp spacing requirements Stream F SR 1770 widening east Grade dictated by vertical clearance requirements and west of I-95 for I-95 bridge; existing RR bridges along I-95 resent southern constraint The Project Team has concurred by signature and date below on the avoidance and minimization measures that have been incorporated into the project design to -date, as described in detail in the CP 4A merger packet. Agency Signature Date �:O-Adft-d W 9/18/2019 y orps of Engineers 9/18/2019 °'GIs '' 224NWildlife Service Doeua MJ bp: /2019 ivision of Water Resources EL am: �S 9/16/2019 N epartment of Transportation Agency Signature Date &pk t, X S&%t,yW(,(,t, 9/17/2019 nvironmental Protection Agency F000u8ipmd by: vas "So. 9/19/2019 i i e Resources Commission AO�i e��� R 1 \c ItVky Mount Urban Area MPO DocuSigned by: 9/�/-2019 Fe era t E i way Administration