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HomeMy WebLinkAboutPN_8th_Street_Short Plat_Project Narrative_230602_v1 11235 s.e. 6th street, suite 150 t 425.453.9501 bellevue, wa 98004 f 425.453.8208 navixeng.com e info@navixeng.com Project Narrative The proposed 8th Street Short Plat proposes to create three separate lots on an existing 13.19-acre parcel (TPN 0886610010) located south of N 8th St between Logan Ave N and Park Ave N. in Renton, Washington. Existing Conditions The 13.19-acre parcel comprised of recently constructed Topgolf facility with parking lot area and pad- ready building sites along the Park Avenue N frontage. The parcel is bound by North 8th Street to the north, Park Avenue North to the east, the Topgolf facility to the west, and office with parking structures to the south. There are no significant trees on-site. The site is mapped as a high seismic hazard area and the southern portion of the site is in the Downtown Wellhead Protection Area Zone 2. This zone prohibits the use of open facilities for stormwater control or otherwise, which are not being proposed as part of the development. On-site soils are comprised of relatively shallow fill overlying alluvial deposits, which consist of very soft to stiff silt with varying sand content and very loose to dense sand with varying silt content. Groundwater was observed as shallow as 4 feet from existing ground surface. The site will not be conducive to stormwater management by infiltration. This project is not located within 100 feet of a stream or wetland, nor is it within 200 feet of Black River, Cedar River, Springbrook Creek, May Creek nor Lake Washington. Proposed Conditions The proposed 8th Street Short Plat proposes to create three separate lots on an existing 13.19-acre parcel (TPN 0886610010) located south of N 8th St between Logan Ave N and Park Ave N. in Renton, Washington. Lot 1 will be 10.54-acres for the recently constructed Topgolf facility, Lot 2 will be 1.67-acres for the approx. 60,000 SF four-story 126-key LivAway Hotel project, and Lot 3 will be 0.97-acres for the approx. 7,000 SF multi-tenant Renton Park Retail project. Access to the site will be from two recently constructed driveways off Logan Ave and a new driveway from Park Avenue N to be constructed as part of the LivAway Hotel or Renton Retail project, whichever P a g e | 2 project is constructed first. There will be shared parking and access agreements between Topgolf, LivAway Hotel, and Renton Park Retail. It is understood that all necessary right-of-way dedications were completed under the Topgolf development. Stormwater Management Stormwater will be managed in accordance with the 2022 City of Renton SWDM. Per the Flow Control Application Map, the project site falls within the ‘Peak Rate Flow Control Standard – Matching Existing’ area, which states that flow control is not required if the proposed developed condition will not generate more than 0.15-cfs increase in the 100-year peak flow under existing site conditions. The existing site condition for the project site is the previous Boeing development, which had roughly 95% impervious surface coverage as confirmed by the City of Renton. Because the proposed development will decrease the impervious surface coverage to less than 85%, the proposed developed condition will not generate more than a 0.15-cfs increase in the 100-year peak flow. Flow control, therefore, is not required. Enhanced water quality treatment for the recently constructed on-site parking lot area is provided by a Biopod Biofilter unit that was installed as part of the Topgolf development. The discharge to the municipal storm drainage system is located at the intersection of North 8th Street and Park Avenue North. Water Service Domestic and fire water services will be provided by connecting to a 12” water main installed as part of the Topgolf development. A new water main connection to the existing 16” water main in Park Ave North will be extended through the project site as part of the LivAway Hotel or Renton Park Retail development, whichever project is constructed first. Sanitary Sewer Service Sanitary sewer service will be provided by means of existing on-site 6” stubs installed as part of the Topgolf development. These existing sanitary sewer stubs will be extended to the proposed LivAway Hotel and Renton Park Retail as part of future construction activities.