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HomeMy WebLinkAbout203-ProjectNarrativeNORTON RANCH LIFT STATION SITE PLAN APPLICATION June 2025 PREPARED BY: MMI #: 10678.001 i P:\10678-Laurel Parkway LLC\001 - Norton Ranch Lift Station\04 Design\Agency Submittal\CityofBozeman\SitePlan\_sourcedocs\10678-001_ProjectNarrative.docx Table of Contents 1 PROJECT NARRATIVE.......................................................................................................................1 1.1 EXECUTIVE SUMMARY.....................................................................................................................1 1.2 PROJECT INFORMATION...................................................................................................................1 1.3 PROJECT HISTORY ..........................................................................................................................2 2 DEPARTURES.....................................................................................................................................2 3 TRAFFIC ..............................................................................................................................................2 4 WATER RIGHTS INFORMATION........................................................................................................2 5 WATER WELLS...................................................................................................................................2 6 LANDSCAPE .......................................................................................................................................2 7 PARKLAND..........................................................................................................................................2 8 INFRASTRUCTURE AND UTILITIES..................................................................................................2 1 P:\10678-Laurel Parkway LLC\001 - Norton Ranch Lift Station\04 Design\Agency Submittal\CityofBozeman\SitePlan\_sourcedocs\10678-001_ProjectNarrative.docx Norton Ranch Lift Station Site Plan Application 1 PROJECT NARRATIVE 1.1 EXECUTIVE SUMMARY The existing Norton Ranch Lift Station is owned and operated by the City of Bozeman. The lift station receives flow from multiple existing developments and was designed to accommodate additional planned developments in the service area. The lift station was originally designed and installed in 2010, with modifications made in 2022 to increase the size of the pumps and provide additional connectivity for the service area. The projected flows for lift station service area were further updated for the lift station per the report completed by HDR (Appendix B). Additional historical background information on the sizing of the lift station can be found in this report. Due to increased sewer flows, the installation of larger force main, wet well, pumps, electrical controls, and upgrades to the existing building are required to adequately serve the service area to ultimate buildout. The proposed improvements to the lift station site include: •Expanding the existing building to accommodate revised internal manifolding and provide a separate generator and electrical controls room. •Relocating the existing generator to a new generator room. •Replacement of the existing wet well to increase working volume and response time. •Re-routing the existing gravity sewer to the new wet well. •Installation of new submersible wastewater pumps. •Installation of new electrical components. •Installation of a new 8-inch force main. •Abandonment of the existing 4” force main. The existing site is zoned R-4 and is within the “Urban Neighborhood” community plan designation. The following is the legal description for the property (refer to Appendix A for the project location): Lot 1 of the Norton East Ranch Phase 6 Subdivision Phase (Plat J-694); situated in Section 9, Township 2 South, Range 5 East, Principal Meridian, Gallatin County, Montana. 1.2 PROJECT INFORMATION The lift station building provides an enclosed above-ground structure for piping, flow monitoring, electrical and controls equipment, and backup generator. The project includes expanding the existing building to accommodate additional manifolding and equipment. The existing building has a footprint of 328 square feet. The planned addition will add 320 square feet, with a final expected footprint of 648 square feet. The building is approximately 13 feet tall to the peak of the roof, and no modifications to the total height are planned with the building expansion. Since the building is not occupied, no parking spaces shall be required. However, the existing access driveway and the proposed additional driveway may be used for maintenance vehicles. No project phasing is proposed, nor will there be any personnel regularly occupying the facility. 2 P:\10678-Laurel Parkway LLC\001 - Norton Ranch Lift Station\04 Design\Agency Submittal\CityofBozeman\SitePlan\_sourcedocs\10678-001_ProjectNarrative.docx Additionally, since the existing generator is proposed to be re-used, no changes to existing noise from the building is expected. 1.3 PROJECT HISTORY The lift station property has been used by the City of Bozeman for the operation of the current facility since 2010. As part of the requirements for the Urban Farms subdivision, the developer is required to make necessary improvements to the lift station and provide a new force main per the HDR design report dated November 5, 2024, which was stamped by the engineer on January 14, 2025. The developer engaged Morrison-Maierle to prepare design documents in September of 2025. Morrison-Maierle and the developer’s representative have coordinated with the City of Bozeman Engineering Department regarding the schematic via meetings held on September 27, 2024, October 30, 2024, and December 18, 2024. Additional coordination was made via email coordination and various phone conversations with City Engineering staff. 2 DEPARTURES Waivers are being requested from the following sections of the Bozeman Municipal Code. Reasoning for requested departures is provided herein and/or attached. •BMC 38.220.060.A.11.g o The site is not normally occupied, and therefore will have a negligible impact on traffic in the area. Additionally, no modifications are proposed to the existing location of the drive access. A departure was requested from the City of Bozeman Engineering department. •BMC 38.510.030.D o Due to the need to maintain security of the facility, a departure is being requested from the facade transparency requirement. It is in the best interest of the public to omit windows to remove the risk added by additional points of entry. o Pursuant to BMC 38.510.030.D.3, we are requesting a departure to provide 0% transparency along the frontage to Vaughn Drive, thereby removing the need for windows. This fits with the nature of the facility and is in the best interest of public health and safety. •BMC 38.530.040.D.3 o The proposed unoccupied building is very small and will measure 40.5 feet long by 16 feet wide once completed. Due to the small size of the building, there isn’t sufficient space to provide meaningful articulation for the facility. Additionally, since the building will be unoccupied, a welcoming entry is not the goal for an access-controlled facility. 3 TRAFFIC Since this facility is not normally occupied, a traffic study analysis is not warranted. Please see above in the list of requested waivers. 4 WATER RIGHTS INFORMATION No water rights for the property exist, nor does the property use any water. 3 P:\10678-Laurel Parkway LLC\001 - Norton Ranch Lift Station\04 Design\Agency Submittal\CityofBozeman\SitePlan\_sourcedocs\10678-001_ProjectNarrative.docx 5 WATER WELLS No water wells are proposed for the site. 6 LANDSCAPE The existing lot currently includes a landscaped block frontage along both Vaughn Drive and Laurel Parkway. Per the separately attached request letter, the Vaughn Drive block frontage was requested to be changed to be Mixed block frontage. Landscaping plans are designed to meet the requirements of BMC 38.510.030.C and 38.510.030.D for their respective frontages, and include the information requested in BMC 38.220.100. A departure is being requested from the façade transparency requirements due to the size and nature of the lift station facility (see section 2 above). Additionally, a 6-ft wide sidewalk is required along the frontage of Laurel Parkway pursuant to BMC 38.400.080. 7 PARKLAND No parkland requirements exist for the property. 8 INFRASTRUCTURE AND UTILITIES The project will include replacement and reconfiguration of existing gravity sanitary sewer mains and structures, installation of new pressure sewer piping, installation of a new force main discharge line, and other miscellaneous pump and control equipment within the planned building expansion. Work will require removal of asphalt, curb, and other materials within the existing streets as shown on the design plans. Any demolished items within the existing rights-of-ways will be restored to the original condition.