20260401-002, C814-2025-0111 1404 East Riverside PUD Presentation — original pdf

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ITEM FOR ENVIRONMENTAL COMMISSION AGENDA COMMISSION MEETING DATE: NAME & NUMBER OF PROJECT: NAME OF APPLICANT OR ORGANIZATION: April 1, 2026 1404 East Riverside PUD, C814-2025-0111 Amanda Swor, Drenner Group LOCATION: 1404 East Riverside Drive COUNCIL DISTRICT: 3 ENVIRONMENTAL REVIEW STAFF: WATERSHED: Sean Watson, Environmental Program Coordinator, 512-963-2167, Sean.Watson@austintexas.gov Urban Watershed, Lady Bird Lake Watershed, Harpers Branch Watershed, Desired Development Zone REQUEST: The applicant proposes a new Planned Unit Development (PUD). STAFF RECOMMENDATION: STAFF CONDITIONS: Recommended with conditions. Staff recommends approval of the PUD with the environmental superiority elements as conditions. • PUD will provide for additional off-site water quality capture of currently untreated stormwater from Manlove Street of a minimum of 7,000 square feet using innovative Jellyfish filter • A 54-inch live oak heritage tree will be relocated to rear of property per approved SP-2021-0451C • PUD will achieve a 3-star Austin Energy Green Building (AEGB) rating, at a minimum • The project shall collect condensate from air conditioning units to support 100% of ground level irrigationThe project will be compliant with the LEED pilot Bird Collision Deterrence credit, ST7 Light Pollution Reduction and comply with Dark Sky regulations • All required tree plantings shall utilize native tree species selected from Appendix F of the Environmental Criteria Manual • Project shall utilize methods to support local Austin biodiversity through innovative native plant landscaping and/or rooftop installations • 100% of required stormwater will be treated using on-site water quality methods • This project will include several landscape solutions that will be achieved with the installation of raised terrace green roof media to be planted with a focus on pollinator-friendly species. 100% of rooftop plantings shall be native to the Edwards Plateau and Blackland Prairie ecoregions. A minimum of 10% of the roof terrace shall be dedicated to landscape installations • The Critical Water Quality Zone will remain free from all development except approved storm drain outfalls and restoration • 100% of all non-turf plant materials will be native or adapted • Shade trees that are not influenced by utility constraints shall be upsized to 4” caliper within the PUD • 1.17 acres of the property is dedicated to the City of Austin as parkland which constitutes approximately 44% of the property. As otherwise specifically modified by the PUD ordinance, the development will comply with current code. 1404 East Riverside PUD C814-2025-0111 Austin Watershed Protection | April 1, 2026 1404 East Riverside PUD C814-2025-0111 2 Site Information  2.62 acres  Critical Water Quality Zone (CWQZ) as well as wetland, rimrock and seep Critical Environmental Features (CEFs) along north side of site  Imagine Austin Activity Corridor, Aligns with Imagine Austin Comprehensive Plan  Zoned East Riverside Corridor (ERC), Corridor Mixed Use (“CMU”) subdistrict  Property is located in the East Riverside District of the Waterfront Overlay  Approved Acton School Redevelopment Site Plan, case number SP-2021-0451C  Approved site plan permits 222 multifamily units Lady Bird Lake Lakeshore Blvd 3 Existing Conditions 4 Proposed PUD  Will include an amendment to the approved Acton School Redevelopment Site Plan: 381 multifamily residential units, inclusive of the 15 on-site affordable housing units Lady Bird Lake  Approximately 44% of the site area, or 1.17 acres, was dedicated as parkland to the City of Austin per the approved site plan, as well as a fiscal payment of $108,983.43 for park improvements as well as $504,373.99 paid for additional fee-in-lieu  Applicant requests building height of 180’, max impervious cover of 70% outside of the waterfront overlay, 45% impervious cover for overall site  Administrative Variance for removal of heritage trees. An administrative variance was granted with the approved site plan for the removal of a 26-inch American elm to be mitigated at a rate of 150%. Asking for administative approval of removal of a 37-inch live oak (classified as dead, diseased or imminent hazard – no mitigation required) and a 32-inch live oak (mitigation payment required at 400% of total inches)  Allow for the reduction of required setbacks from the rimrock, seep and wetland critical environmental features on the property to the minimum extent practicable  Will comply with approved Wetland Mitigation Plan (SP-2021-0451C) 5 Code Modifications  §25-2-492 - Site Development Regulations: Original CS base district limited to 60 feet max height. PUD asking for 180 feet max height  §25-2-734(D) - East Riverside Subdistrict Regulations: Maximum height is the lower of 96 feet or the maximum height allowed in the base zoning district. PUD asking for 180 feet max height  §25-2-734(C) - East Riverside Subdistrict Regulations: For an area not included in a primary setback area or a secondary setback area, the maximum impervious cover is 50%. PUD asking for max of 70%  §25-8-642(C) - Administrative Variance is amended to allow administrative approval for the removal of Tree# 15269, a 37-inch Live Oak tree (dead, diseased, imminent hazard - mitigation not required) and Tree#15268, a 32-inch Live Oak tree (400% mitigation). Removal of a 26-inch American elm was granted with the currently approved site development permit (150% mitigation)  §25-8-281(C)(1)(a) - Critical Environmental Features: Allow for the reduction of required setbacks to the minimum extent practicable 6 Wetland Mitigation and Superiority 7 Wetland Mitigation Plan  Enhanced outfalls. An enhanced outfall is beneficial for stormwater management because it transforms a standard pipe discharge point into an engineered system that reduces pollution, prevents erosion, and improves water quality before runoff enters natural water bodies  609S Native seeding enhancement  Rain garden to treat runoff from roof and fire lane  Install biofiltration pond to treat roof drain runoff with modified stilling basin and large gabion level spreader with 2-4 rows of tall, native bunch grasses  Additional tree plantings in the Critical Environmental Features buffer  Invasive species removal of golden bamboo, Bermuda grass and Chinaberry 8 Environmental Superiority  PUD will provide for additional off-site water quality capture of currently untreated stormwater from Manlove Street of a minimum of 7,000 square feet using innovative Jellyfish filter  A 54-inch live oak heritage tree will be relocated to rear of property per approved SP-2021-0451C  3-star Austin Energy Green Building (AEGB) rating, at a minimum  The project shall collect condensate from air conditioning units to support 100% of ground level irrigation  The project will be compliant with the LEED pilot Bird Collision Deterrence credit, ST7 Light Pollution Reduction and comply with Dark Sky regulations  All required tree plantings shall utilize native tree species selected from Appendix F of the Environmental Criteria Manual  Project shall utilize methods to support local Austin biodiversity through innovative native plant landscaping and/or rooftop installations 9 Environmental Superiority  100% of required stormwater will be treated using on-site water quality methods  This project will include several landscape solutions that will be achieved with the installation of raised terrace green roof media to be planted with a focus on pollinator- friendly species. 100% of rooftop plantings shall be native to the Edwards Plateau and Blackland Prairie ecoregions. A minimum of 10% of the roof terrace shall be dedicated to landscape installations  The Critical Water Quality Zone will remain free from all development except approved storm drain outfalls and restoration  100% of all non-turf plant materials will be native or adapted  Shade trees that are not influenced by utility constraints shall be upsized to 4” caliper within the PUD  1.17 acres of the property is dedicated to the City of Austin as parkland which constitutes approximately 44% of the property. 10 Staff Recommendations Staff recommends approval of the PUD with the following conditions:  Staff recommends approval of the PUD with the environmental superiority elements as conditions  As otherwise specifically modified by the PUD ordinance, the development will comply with current code 11 Hearing Schedule Meeting Small Area Joint Planning Commission: 1404 East Riverside PUD (approved unanimously) Environmental Commission: 1404 East Riverside PUD Planning Commission: 1404 East Riverside PUD City Council: 1404 East Riverside PUD Date March 10, 2026 April 1, 2026 April 14, 2026 Not Scheduled 12 Thank you! Sean Watson Environmental Program Coordinator Sean.Watson@austintexas.gov Austin Watershed Protection