Item 2: 5811 Southwest Parkway SOS Amendment Staff Presentation — original pdf

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5811 Southwest Parkway Site-Specific SOS Amendment SPC-2025-0066C Austin Watershed Protection | August 19, 2026 SOS Amendment ▪ 1992 Save Our Springs (SOS) ordinance adopted by citizen initiative ▪ Per 25-8-515, variances to SOS are not allowed ▪ Supermajority of Council must approve amendments to SOS ▪ Council Resolution #20190131-040 on January 31st, 2019 “The City Council initiates site specific amendments to the Land Development Code, including Chapter 25-8, Subchapter A, Article 13 (Save Our Springs Initiative), as minimally required to address proposed redevelopment of the 3.026- acre site located at 5811 Southwest Parkway.” 2 The Site SPC-2025-0066C 3 Site Features ▪ Barton Creek Watershed ▪ Barton Springs Zone Classification ▪ Edwards Aquifer Recharge Zone ▪ Full Purpose Jurisdiction ▪ Council District 8 ▪ All uplands (no Critical Water Quality Zone (CWQZ); no Water Quality Transition Zone (WQTZ) ▪ No Critical Environmental Features (CEFs) ▪ 3.206 Acres ▪ Existing Impervious Cover 33.9% (1.0258 acres or 44,683.848 sqft) ▪ Septic fields will be removed and the new development will utilize public wastewater 4 The Site 5 The Site 6 SOS Initiating Resolution ▪ January 31, 2019: City Council initiates a site-specific amendment to the Land Development Code, including Chapter 25-8, Subchapter A, Article 13 (Save Our Springs Initiative), as minimally required to address proposed redevelopment of 5811 Southwest Parkway. ▪ Once a complete application for development has been filed by representatives of 5811 Southwest Parkway (submitted February 2025), the City Manager is directed to work with the applicant to minimize departure from code requirements while maximizing environmental protection and return to Council with an ordinance that: a) allows for no increase in existing impervious cover on the site; if feasible, identifies ways to decrease the amount of impervious cover; b) c) provides water quality treatment consistent with City Code Section 25-8-26 (Redevelopment Exception in the Barton Springs Zone) for all redevelopment areas and to the extent feasible for the entire site; incorporates additional environmental and resource-efficient strategies; and d) e) preserves the requirements of the Hill Country Roadway regulations. 7 SOS Amendment ▪ SOS requirement for impervious cover limited to 15% Net Site Area (NSA) (0.4539 acres or 19,771.88 sqft) ▪ Proposed impervious cover reduced from 33.9% to 33.5% Gross Site Area (GSA) (1.01 acres or 43,995.60 sqft) 8 SOS Amendment ▪ SOS requirement for non-degradation water quality treatment ▪ The initiating resolution only requires Barton Springs Zone Redevelopment level water quality treatment, but the applicant will develop all ponds following the higher SOS requirement for non-degradation water quality treatment 9 Staff Recommendation Staff recommends approval of the site-specific SOS amendment with the following conditions: ▪ Small reduction in impervious cover from 33.9% to 33.5% ▪ SOS non-degradation water quality treatment for entire site ▪ Austin Energy Green Building rating of 2 star ▪ Bird friendly building design ▪ Integrated Pest Management ▪ No artificial turf ▪ Interpretive signage ▪ Complies with the Hill Country Roadway regulations 10 Staff Recommendation Staff recommends approval of the site-specific SOS amendment with the following conditions: ▪ Two electric charging stations ▪ Caliper inches of trees for mitigation has increased by 1 inch (3-inch to 4-inch) ▪ All disturbed areas are shown to be revegetated with 609S ▪ Landscape plants 100% native 11 Boards and Commissions Review Schedule Meeting Date Environmental Commission: Considered for recommendation August 19, 2026 Codes and Ordinances Joint Committee: Considered for recommendation August 19, 2026 Planning Commission: Considered for recommendation August 25, 20256 City Council: Considered and action September 24, 2026 12 Questions? Contact Information: Leslie Lilly (WPD) leslie.lilly@austintexas.gov Sean Watson (WPD) sean.watson@austintexas.gov 13