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HomeMy WebLinkAbout020 - Appendix Q - Concurrent Construction Request Letter 2 August 2024 City of Bozeman Development Review Committee Re: Turnrow Subdivision Re: Concurrent Construction Request Please accept this letter as a request for concurrent construction, as outlined in section 38.270.030.B.1.b.(2), of Subdivision infrastructure and building improvements on all lots within Phase 1.1, Block 1 Turnrow Subdivision (“Subdivision”). Block 1 contains only commercial lots, with all other blocks containing residential lots. As such, Phase 1.1, Block 1 is the only portion of the Subdivision that meets the criteria for concurrent construction, and as such, is the only phase for which concurrent construction is being proposed. Items described in the section below on Phase 1.1 shall be installed, or financially guaranteed, prior to the occupancy of any structure within Phase 1.1, Block 1. The Subdivision and concurrent construction site projects will be under control of a single developer, with all work under the supervision of a single general contractor. No third-party builders may complete work until infrastructure is completed. The developer will provide insurance, risk acknowledgement, and indemnification in a form acceptable to the City prior to Final Plat and/or Building Permit issuance. Please see the specific list below, as well as Appendix Q.2 for more information on these improvements. Each lot within Block 1 will be subject to a further site plan review and will be evaluated under that application for conformance with the UDC and the approved MSP, prior to any physical construction taking place. Phase 1.1 Required Concurrent Construction Infrastructure & Snow Removal Infrastructure which shall be completed prior to building permit issuance and would permit concurrent construction on Phase 1.1, Block 1 include the following items. Please note that the items related to water main and fire hydrant installations shall all be tested and activated prior to building permit issuance. If interior utilities are activated by the City of Bozeman for concurrent construction purposes, this shall not mean they have been deemed formally accepted by the City of Bozeman. The owner is responsible for any damage that may occur to active utilities during concurrent construction activities and prior to final acceptance by the City. • East Valley Center Road • East Valley Center Road improvements are being permitted with the Montana Department of Transportation (MDT). These improvements include: • Symmetrical expansion of the existing road to a 3-lane section from Quicksilver Road to Davis Lane with tapers on each end to accommodate a southbound turning lane onto Davis Lane and Quicksilver Road • Installation and maintenance of temporary striping and signage to accommodate the new configuration, at minimum • Final striping shall be completed at the time of signal installation • Installation of utility culverts for dry utilities and electrical conduit required for the traffic signal • MDT Access Permit for Quicksilver Road • Additional approvals being coordinated: • Traffic Signal • Culverts • Davis Lane • Road Reconstruction • Remove the existing Davis Lane section through the entire Turnrow Subdivision east frontage (at minimum) and further south as required to blend design grades. • Construct Davis Lane to a 3-lane arterial section from East Valley Center Road along the eastern boundary of the Subdivision, to accommodate a northbound turning lane into Turnrow Trail • Includes installation of road structure aggregates, curb, gutter, asphalt, lighting • Temporary signage and striping, at minimum, if final striping cannot be performed • A curbed taper section shall be designed to provide positive protection for vehicles and direct traffic to the existing 2-lane county section. The design meets design guidance per Section 9.2.2.4 from Chapter 9 of the MDT Road Design Manual. • A tapering section which matches the existing country road section shall be installed south of the property to channelize traffic to the existing 2-lane section at the southern boundary of the project near Westlake Road. • Final signage and striping shall be installed prior to issuance of any building permits for buildings within Phase 1.1. • Utilities • Storm Drain • Install storm drain main within Davis Lane for capture and treatment of stormwater • Sewer • Remove and replace the existing manhole and existing 15” stub to Block 1. • The sewer main shall convey the estimated 2,265 gpm force main discharge in addition to the upstream gravity sewer flows from the properties to the south, as outlined in the figure from the VCLS PER (drafted by HDR). • Install 18” sewer main into Block 1 to the proposed outfall manhole where gravity and force main discharge will be combined. • Water • Install two live taps and extensions to the property • Block 1 secondary feed loop (8”) • Turnrow Trail water main (12”) • Culverts • Upsize the existing culvert for Cattail Creek to 60” embedded RCP • Replace existing 30” culvert beneath Davis Lane for conveyance of water from the existing irrigation ditch • Extend the existing culvert beneath Valley Center to a point south of the proposed 10’ shared use path • Access Construction to Existing Roads • The following accesses shall be constructed in their final configuration and surfacing to comply with necessary stormwater permitting and ensure safety, traffic control, and fire and emergency access to the site. • This shall be completed beyond the curb return and a minimum of 25’ (or as required by the City of Bozeman) beyond any depressed stormwater inlets required for capture, conveyance, and treatment of stormwater originating from these accesses • Quicksilver Road • Installation of access to Valley Center from Quicksilver Road • Turnrow Trail • Installation of access point to Davis Lane from Turnrow Trail • Turnrow Trail Improvements • The installation extents shall be from Davis Lane to the western boundary of Phase 1 • Road Improvements • Includes installation of road structure aggregates • Utilities • Installation of water, sewer, & stormwater facilities within the right-of-way • Hydrants • Installation of all hydrants along the road within the boundary shown for Phase 1.1 • Gunsmoke Avenue Improvements • The installation extents shall be from Turnrow Trail north and west to the boundaries of Phase 1 • Road Improvements • Includes installation of road structure aggregates • Utilities • Installation of water, sewer, & stormwater facilities within the right-of-way • Installation of run-on stormwater drain • Hydrants • Installation of all hydrants along the road within the boundary shown for Phase 1.1 • Quicksilver Road Improvements • The installation extents shall be from Turnrow Trail to the intersection with East Valley Center Road • Road Improvements • Includes installation of road structure aggregates • Utilities • Installation of water, sewer, & stormwater facilities within the right-of-way • Includes force main extension beneath Gunsmoke Avenue • Hydrants • Installation of all hydrants along the road within the boundary shown for Phase 1.1 • Additional Utility Improvements • Block 1 Utilities • The utilities below shall have adequate cover installed and be provided with accessible route for maintenance, but shall not have final surfacing (curb, gutter, asphalt, etc.) • Secondary Water Supply Loop • Constructing a secondary supply water main through the proposed easement within Block 1 • Block 1 Hydrant • Install the planned hydrant within Block 1 • Pressure Reducing Valves • The following pressure reducing valves will be installed with Phase 1.1 • Primary PRV (near Turnrow Trail & Davis Lane intersection) • Secondary PRV (near Quicksilver Road and East Valley Center Road intersection) • Stormwater Treatment Structures • Stormtech Structures • Treatment system U-1 shall be constructed which serves Quicksilver Road between Gunsmoke Avenue and East Valley Center Lane • Treatment system U-2 shall be constructed which serves Davis Lane and a small portion of Block 2 • Surface Pond P-1 • Pond P-1 will be constructed as it provides stormwater treatment for internal roads for Phases 1.1-1.4 • Snow Removal • Snow removal shall be performed during the winter to provide access for fire and emergency service vehicles. • Two points of access to the subdivision shall be cleared of snow and any main roads where fire hydrants are provided nearest to the lots undergoing concurrent construction. • This shall include on the eastern portion of Turnrow Trail (between Quicksilver Rd and Davis Lane), Gunsmoke Avenue (between Turnrow Trail and Quicksilver), and the northern portion of Quicksilver Road (between Gunsmoke Avenue and East Valley Center Road). • Sewer Service Inspections • Buildings within lots that are eligible for concurrent construction shall have a sewer service video inspection completed by the owner of the building to verify that no damage occurred during construction activities. • The video shall be required to be submitted to the City of Bozeman, and occupancy shall not be granted for the building until received and approved by the City. Phase 1.1 Subdivision Infrastructure Not Required for Concurrent Construction The following infrastructure items, if not already completed, will be financially guaranteed through an improvements agreement when applying for a building permit for commercial lots within Block 1. • Block 1 Sewer Infrastructure • The utilities below shall have adequate cover installed and be provided with accessible route for maintenance, but shall not have final surfacing (curb, gutter, asphalt, etc.) • Gravity Sewer Outfall • Extend the existing 15” sanitary sewer gravity main through Block 1 for conveyance of all sanitary sewer for Phase 1 • Install a manhole on this outfall line that will receive discharge from the future Valley Center Lift Station • Sewer Force Main • The sewer force main shown through Block 1 shall be constructed for future connection to the City of Bozeman’s force main from the Valley Center Lift Station • The force main shall be capped west of the Quicksilver Road and East Valley Center Road intersection as shown • Alleys 3.1 & 3.2 • Road Improvements • Includes installation of road structure aggregates, concrete valley gutters (if applicable), and asphalt per the proposed road section • Utilities • Installation of water, sewer, & stormwater facilities within the rights-of- way • Alley 6.1 Improvements • Road Improvements • Includes installation of road structure aggregates and asphalt • Park Improvements • All park improvements within Park 1 • Shared Use Path Construction • East Valley Center (Onsite) • Installation of shared use path on East Valley Center Road from Quicksilver Road to Davis Lane • Includes installation of 60” RCP culvert for Cattail Creek • East Valley Center (Offsite) • Installation of shared use path east of Davis Lane to Westlake Road • Davis Lane • Installation of a 10’ shared use path along the western side of Davis Lane • Final Surfacing of Roadways • Includes curb, gutter, and asphalt installation within the following roadways: • Turnrow Trail • Gunsmoke Avenue • Quicksilver Road • Sidewalks • Installation of all common open space and park frontage sidewalks • Signing and Striping • The final signing and striping may be deferred provided that temporary striping and signage is provided and acceptable to the agencies having jurisdiction • East Valley Center Road • Final striping for East Valley Center shall be concurrent with the traffic signal installation. • Interior Roads • Turnrow Trail • Gunsmoke Avenue • Quicksilver Road • Street Lighting • Street lighting proposed for Phase 1.1 shall not be required for concurrent construction • Traffic Signal • Final installation and activation of the proposed traffic signal at the Davis Lane and Valley Center Road intersection shall be performed when warrants are met for the Traffic Signal. • Temporary signage and control shall be in place and maintained. • Access Permit • MDT Access Permit for Maintenace Access Permit to future Valley Center Lift Station Phase 1.2 No infrastructure within Phase 1.2 is proposed to be deferred, or financially guaranteed for concurrent construction activities. These items shall only be required for final plat of this phase. • Gunsmoke Avenue Improvements • The installation extents shall be from Turnrow Trail south to the boundary of Phase 1.2 • Road Improvements • Includes installation of road structure aggregates, curb, gutter, asphalt, lighting, and signage and striping • Utilities • Installation of water, sewer, & stormwater facilities within the right-of-way • Installation of run-on stormwater drain • Hydrants • Installation of all hydrants along the road within the boundary shown for Phase 1.2 • Alleys 2.1, 2.2, and 2.3 • Road Improvements • Includes installation of road structure aggregates, concrete valley gutters (if applicable), and asphalt per the proposed road section • Utilities • Installation of water and facilities within the rights-of-way • Installation of all common open space sidewalks, parking spaces, and other common improvements • Durango Lane Improvements • The installation extents shall be from Gunsmoke Avenue to the western boundary of Phase 1.2 • Road Improvements • Includes installation of road structure aggregates, curb, gutter, asphalt, lighting, and signage and striping • Utilities • Installation of water, sewer, & stormwater facilities within the right-of-way • Hydrants • Installation of all hydrants along the road within the boundary shown for Phase 1.2 • Alley 4.2 • Road Improvements • Includes installation of road structure aggregates, concrete valley gutters (if applicable), and asphalt per the proposed road section • Installation of all common open space sidewalks, parking spaces, and other common improvements. Phase 1.3 No infrastructure proposed within Phase 1.3 is proposed to be deferred, or financially guaranteed for concurrent construction activities. These items shall only be required for final plat of this phase. • Durango Lane Improvements • The installation extents shall be from the Phase 1.2 boundary to the western boundary of Phase 1.3 • Road Improvements • Includes installation of road structure aggregates, curb, gutter, asphalt, lighting, and signage and striping • Utilities • Installation of water, sewer, & stormwater facilities within the right-of-way • Installation of temporary stormwater pond. • Hydrants • Installation of all hydrants along the road within the boundary shown for Phase 1.3 • Alleys 4.1, 4.3, and 4.4 • Road Improvements • Includes installation of road structure aggregates, concrete valley gutters (if applicable), and asphalt per the proposed road section • Utilities • Installation of water and facilities within the rights-of-way • Installation of water main and services through common open space lot. • Installation of all common open space sidewalks, parking spaces, and other common improvements Phase 1.4 No infrastructure proposed within Phase 1.4 is proposed to be deferred, or financially guaranteed for concurrent construction activities. These items shall only be required for final plat of this phase. • Durango Lane Improvements • The installation extents shall be from the Phase 1.3 boundary to the western boundary of Phase 1.4 • Road Improvements • Includes installation of road structure aggregates, curb, gutter, asphalt, lighting, and signage and striping • Utilities • Installation of water, sewer, & stormwater facilities within the right-of-way • Installation of temporary stormwater pond • Hydrants • Installation of all hydrants along the road within the boundary shown for Phase 1.4 • Alleys 5.1, 5.2, 5.3, 5.4, 5.5 and 5.6 • Road Improvements • Includes installation of road structure aggregates, concrete valley gutters (if applicable), and asphalt per the proposed road section • Utilities • Installation of water and facilities within the rights-of-way • Installation of all common open space sidewalks, parking spaces, and other common improvements • Quicksilver Road Improvements • The installation extents shall be from the southern property boundary to Turnrow Trail • Road Improvements • Includes installation of road structure aggregates, curb, gutter, asphalt, lighting, and temporary signage and striping • Utilities • Installation of water, sewer, & stormwater facilities within the right-of-way • Hydrants • Installation of all hydrants along the road within the boundary shown for Phase 1.4 • Gunsmoke Avenue Improvements • The installation extents shall be from the southern property boundary to Durango Lane • Road Improvements • Includes installation of road structure aggregates, curb, gutter, asphalt, lighting, and signage and striping • Utilities • Installation of water, sewer, & stormwater facilities within the right-of-way • Installation of run-on stormwater drain • Hydrants • Installation of all hydrants along the road within the boundary shown for Phase 1.4 • Westlake Road Improvements • The installation extents shall be from Quicksilver Road to Gunsmoke Avenue. • Road Improvements • Includes installation of road structure aggregates, curb, gutter, asphalt, lighting, and signage and striping • Utilities • Installation of water, sewer, & stormwater facilities within the right-of-way • Hydrants • Installation of all hydrants along the road within the boundary shown for Phase 1.4 All infrastructure design reports have also been included as Appendices (Appendix N-P). Please let us know if there are any additional conditions required to enable concurrent Subdivision infrastructure and building construction. Thank you,