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HomeMy WebLinkAboutPN_Longacres_Master_Plan_Project_Narrative_Additional_Items_250609_v1 RE: Longacres Campus Master Plan Narrative – Additional Items Item 7. Indicate heights of existing buildings that are part of the Longacres Masterplan Site − Parcel 4: South Building Height 91’ − Parcel 7: Building Height 22’ − Parcel 19: Central Utility Building Height 45’ − Parcel 20: Maintenance Building Height 42’ − Parcel 21: Substation approximate height 10’ Item 12. Provide a general description of any existing sources of nighttime lighting on the campus. Currently, at the Longacres Site there is exterior lighting at existing building entries and the perimeter for safety and security. This includes the maintenance building on parcel 20, the central utility plant building on parcel 19, and buildings on parcels 4 and 7. The existing parking lots on parcels 4 and 7 have light poles to illuminate the parking area for safety and security. Additionally, along the existing sidewalks of the site internal streets are light poles for street lighting. A number of the internal paved pathways around the site have light poles for safety and security. There is some landscape lighting around the South building on parcel 4. The Sounders Training Center Fields are located on parcel 4 to the West of the South buildings and have LED field lights that are directed downwards to the fields to prevent light pollution outside of the fields. These lights are typically used for evening training sessions which are typically completed by 9am and occasional maintenance activities or special events. Item 13. As possible, indicate existing campus population, please breakdown by type, if available. Also indicate non-campus population, as applicable and available. The existing campus population consists of approximately 10 site support staff based in the South building. The office building on parcel 4 has approximately 1,500-1,800 capacity for office workers. It is currently the Sounders Training Facility and is partially leased with approximately 400-500 employees, trainers and players using the spaces. The daycare building on parcel 7 is fully occupied is approximately 50-60 people on site. June 6, 2025 Page 2 of 4 Item 15. Provide current procedures for the collection, treatment and disposal of hazardous waste, if any. Current procedures are to handle any such materials in accordance with applicable regulations. There is fuel for equipment at the site at the Sounders Maintenance Shed and the campus maintenance building. Fuel for equipment will be used and stored on site, subject to proper spill control measures. When needed any toxic or hazardous chemicals being used, stored, or produced on site during construction or operation would be handled in accordance with applicable regulations. Item 16. Indicate existing uses within the campus and immediately adjacent where existing operations and/or equipment is sensitive to noise and vibrations, as possible. The property adjacent to the South border of the Site is owned by the City of Seattle/Seattle Public Utilities and has a 60-inch regional water supply main. Historically they have requested additional information on induced settlement that could come from vibration during construction on adjacent parcels, for example. Item 26. As possible, indicate any assumed increase in on-site staff/employee and other population. Indicate if any temporary staff displacement anticipated. The master plan development assumes in increase in residential population with the incre8,000-seatroximately 3,000 units and space for approximately 8,000- 10,000 new employees in the commercial office and medical office sector and industrial sector, approximately 100,000 sf of retail with approximately 200-300 employees, approximately 20 hotel employees and approximately 150-200 hotel keys and an 8,000 seat regional draw venue. Item 34. Describe any proposed ROW/street vacations and provide a map indicating these areas. Please provide the rationale for each of the vacations. Currently there are no proposed ROW/Street Vacations. Item 38. Indicate new provisions for handling hazardous materials, if any. June 6, 2025 Page 3 of 4 No new provisions proposed at this time. See Item 15 for current provisions. Item 39. Indicate new provisions to protect areas employing sensitive equipment from development under the Alternatives, if any. Currently there are no known or intended areas employing sensitive equipment in any of the alternatives. Item 40. Describe through text (and illustrations/ sketches, if available) the sustainability features for the site, including LEED, native landscaping, water reuse, etc. Describe any “low-impact development” measures, including stormwater, water/resource conservation, alternative energy, or other measures. There are a number of sustainable features to the site and paragraphs below summarize a number of initiative and sustainable opportunities that are part of sustainability vision to the stie. One of the major ones is the opportunity to expand the existing district energy system. These are the key elements and there are also a number of others related to stormwater, open space, and habitat in the reports by the consultant team. Sustainability: The Longacres master plan is uniquely positioned to take advantage of existing infrastructure on the site – specifically the existing central utility plan that has a connection to free thermal energy from the nearby King County waste treatment plant. Other key elements of the site include the direct proximity to high- capacity transit and the large, protected wetland at the center of the district. These existing assets, combined with thoughtful design and resiliency, will allow the site to set a new standard for efficient and sustainable development, both in Renton and the broader Pacific Northwest region. Expand District Energy: Developing the site with integrated infrastructure allows for a level of efficiency, resiliency, and performance that is often out of reach for individual buildings developed in isolation. District energy will leverage the existing infrastructure on campus to efficiently create low-carbon thermal energy for all buildings in the district, freeing space in these developments and creating a streamlined path for meeting energy code requirements. Further, a district energy system will create a pathway for energy resiliency that utilities are encouraging through incentives. June 6, 2025 Page 4 of 4 Protect Water: Restoration and enhancement of the existing natural systems on the site is at the heart of the design. Improving the natural function of the existing wetland will increase biodiversity, provide new native habitats, and help the region become more resilient by providing better stormwater management. By creating ample ways for people to engage with the natural environment, we can increase environmental awareness and connect people to nature, improving wellbeing. Longacres can also contribute to water conservation and awareness by partnering on the creation of new programs. King County’s reclaimed water infrastructure is on site and with support from the City of Renton, irrigation systems could utilize reclaimed water and substantially reduce potable water use. Plan For The Future: Sustainability at its foundation is about meeting the needs of today without compromising the needs of the future. Longacres will explore opportunities for resiliency and future-proofing the campus, with a particular focus on high-performance building designs, grid interactivity, designing for extreme weather, and embodied carbon. We will evaluate which third-party sustainability certification programs provide transparency and accountability to the process of responsible development.