Environmental Commission Regular Meeting of the Environmental Commission - Permitting And Development Center, Events Center, Room 1401 6310 Wilhelmina Delco Drive Austin, Texas 78752
Regular Meeting of the Environmental Commission May 1, 2024 at 6:00 PM Permitting And Development Center, Events Center, Room 1405 6310 Wilhelmina Delco Drive Austin, Texas 78752 Some members of the Environmental Commission will be participating by videoconference. The meeting may be viewed online at: http://www.austintexas.gov/page/watch-atxn-live Public comment will be allowed in-person or remotely via telephone. Speakers may only register to speak on an item once either in-person or remotely and will be allowed up to three minutes to provide their comments. Registration no later than noon the day before the meeting is required for remote participation by telephone. To register to speak remotely, call or email Elizabeth Funk, Watershed Protection Department, at (512) 568-2244, Elizabeth.Funk@austintexas.gov no later than noon, the day before the meeting. The following information is required: speaker name, item number(s) they wish to speak on, whether they are for/against/neutral, email address and telephone number (must be the same number that will be used to call into the meeting). Colin Nickells Jennifer Bristol, Secretary David Sullivan Richard Brimer Perry Bedford, Vice Chair CURRENT COMMISSIONERS: Haris Qureshi Peter Einhorn Mariana Krueger Melinda Schiera Hanna Cofer AGENDA CALL TO ORDER PUBLIC COMMUNICATION: GENERAL The first 10 speakers signed up prior to the meeting being called to order will each be allowed a three-minute allotment to address their concerns regarding items not posted on the agenda. 1 APPROVAL OF MINUTES PUBLIC HEARINGS Approve the minutes of the Environmental Commission Regular Meeting on March 20, 2024 and the Special Called Meeting on March 28, 2024. Name: Bridle Ridge at Wildhorse Ranch, C8-2023-0259 Applicant: Kimley Horn (Kevin Burks) Location: 10501 ½ Blue Bluff Rd, Austin, TX 78653 Council District: District 1 Staff: Pamela Abee-Taulli, Environmental Program Coordinator, Development Services Department Applicant request: Request to vary from a) 25-8-341 to allow cut over four (4) feet, to 15 feet and b) 25-8-342 to allow fill over four (4) feet, to 15 feet. Staff recommendation: Staff recommends approval of the variances with conditions DISCUSSION AND ACTION ITEMS 3. Approve a recommendation on an ordinance amending City Code Title 25 related to development regulations applicable to residential re-subdivisions and multi-family residential site development of five to sixteen units – Brent Lloyd, Development Officer, Development Services Department Election of Environmental Commission Officers for the May 1, 2024 through April 30, 2025 term. Approve a recommendation supporting the City Council’s code resolutions for Home 2 (allowing 2,000 …
in a REGULAR meeting on ENVIRONMENTAL COMMISSION REGULAR CALLED MEETING MINUTES WEDNESDAY, March 20, 2024 The ENVIRONMENTAL COMMISSION convened Wednesday, March 20, 2024, at 6310 Wilhelmina Delco Drive in Austin, Texas. Vice Chair Bedford called the Environmental Commission Meeting to order at 6:00 p.m. Commissioners in Attendance: Perry Bedford, Richard Brimer, Jennifer Bristol, Hanna Cofer, Colin Nickells, and David Sullivan Commissioners in Attendance Remotely: Mariana Krueger Commissioners Absent: Peter Einhorn, Haris Qureshi, Melinda Schiera, and Kevin Ramberg PUBLIC COMMUNICATION: GENERAL Santiago, I35 projects Shiang Lee, How You Can Benefit from the Inflation Reduction Act APPROVAL OF MINUTES 1. Approve the minutes of the Environmental Commission Regular Meeting on March 6, 2024 The minutes of the Environmental Commission Regular meeting on March 6, 2024 were approved on Commissioner Sulivan’s motion, Commissioner Brimer’s second on a 7-0 vote. Commissioners Einhorn, Ramberg, Qureshi, and Schiera were absent. DISCUSSION ITEMS 1. Presentation on the South Central Waterfront Combining District with a Density Bonus – April Geruso of the City of Austin Planning Department. Speakers: April Geruso, Planning Department Vice Chair Bedford called for a recess at 6:39. Vice Chair Bedford reconvened the meeting at 6:47. 1 3. 4. Chad Sharrad, Planning Department Tyler Tripp, Planning Department Item conducted as posted. No action taken. DISCUSSION AND ACTION ITEMS 2. Consider a recommendation on the budget recommendations from the Joint Sustainability Committee – Presented by Haris Qureshi and David Sullivan, Environmental Commission Members A motion to support the budget recommendations from the Joint Sustainability Committee was approved on Commissioner Sullivan’s motion, Commissioner Brimer’s second on a 6-0 vote. Commissioner Nickells abstained. Commissioners Einhorn, Ramberg, Qureshi, and Schiera were absent. COMMITTEE UPDATES Update from the Urban Forestry Committee on adding a discussion on ghost trees to the March 28th agenda – Richard Brimer Item conducted as posted. No action taken. Update from the South Central Waterfront Advisory Board on the status of the Combining District & Density Bonus Program and Planned Unit Development applications – David Sullivan Item conducted as posted. No action taken. FUTURE AGENDA ITEMS Commissioner Sullivan wanted to discuss IH35 and requested a presentation from staff on the environmental impacts of the IH35 expansion and the benefits of capping, seconded by Commissioner Brimer. Commissioner Bristol requested a presentation from Audubon on bird-safe buildings, which was seconded by Commissioner Bedford. ADJOURNMENT Vice Chair Bedford adjourned the meeting at 7:50 P.M. 2
ENVIRONMENTAL COMMISSION SPECIAL CALLED MEETING MINUTES WEDNESDAY, MARCH 28, 2024 The ENVIRONMENTAL COMMISSION convened in a SPECIAL CALLED meeting on Thursday, March 28, 2024 at 6310 Wilhelmina Delco Drive in Austin, Texas 78752. Vice Chair Bedford called the Environmental Commission Meeting to order at 6:00 p.m. Commissioners in Attendance: Perry Bedford, Rick Brimer, Peter Einhorn, Melinda Schiera Commissioners in Attendance Remotely: Hanna Cofer, Mariana Krueger, David Sullivan Commissioners Absent: Jennifer Bristol, Haris Qureshi, Colin Nickells, Kevin Ramberg PUBLIC COMMUNICATION: GENERAL None DISCUSSION AND ACTION ITEMS 1. Presentation on Watershed Protection Department's Fiscal Year 2024 Budget, Programs, and Projects Overview and approve recommendations for their FY25 budget — Anupa Gharpurey, Financial Manager, and Pam Kearfott, Managing Engineer, Watershed Protection Department Speakers: Jorge Morales, Director, Watershed Protection Department Anupa Gharpurey, Financial Manager, Watershed Protection Department Pam Kearfott, Managing Engineer, Watershed Protection Department A motion to make recommendations for Watershed Protection’s Fiscal year 2025 budget was approved on Commissioner Bedford’s motion, Commissioner Einhorn’s second on a 7-0 vote. Commissioners Bristol, Qureshi, Nickells, and Ramberg were absent. Vice Chair Bedford adjourned the meeting at 7:11 p.m. without objection. 1
Pamela Abee-Taulli Environmental Program Coordinator Development Services Department BRIDLE RIDGE AT WILDHORSE RANCH 10501 ½ BLUE BLUFF RD C8-2023-0259 PROJECT LOCATION Site Location Austin ETJ Austin City Limits Edwards Aquifer Recharge Zone Edwards Aquifer Contributing Zone 2 This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. It does not represent an on-the- ground survey and represents only the approximate relative location of property boundaries. This product has been produced by the Watershed Protection Department for the sole purpose of geographic reference. No warranty is made by the City of Austin regarding specific accuracy or completeness. 0510Miles[ PROPERTY DATA • Gilleland Creek Watershed • Suburban Classification • Desired Development Zone • Austin Full Purpose Jurisdiction • Council District 1 • Wildhorse Ranch Planned Unit Development (PUD) 3 [ PROJECT DATA • Single family residential development with roadways and storm water ponds. • 21.4 acres [ ENVIRONMENTAL DATA • Wetland Critical Environmental Features (CEF) • Critical Water Quality Zone (CWQZ) CEF CWQZ [ ENVIRONMENTAL DATA • Wetland Critical Environmental Features (CEF) • Critical Water Quality Zone (CWQZ) • Slopes • 86% of the site is 0-15% slopes, but very hilly CEF CWQZ 2-foot contours [ ENVIRONMENTAL DATA CWQZ [ VARIANCE REQUESTS 8 § 25-8-341 - CUT REQUIREMENTS. (A) Cuts on a tract of land may not exceed four feet of depth. • The variance request is to allow cut over 4 feet to15 feet. § 25-8-342 - FILL REQUIREMENTS. (A) fill on a tract of land may not exceed four feet of depth. • The variance request is to allow fill over 4 feet to 15 feet. VARIANCE REQUESTS [ VARIANCE RECOMMENDATION • Variances for grading have been granted for projects with similar site constraints, specifically topographic conditions that constrain the ability to comply with transportation and ADA regulations. • The variance • • • Is necessitated by topographic features, not design choice; Is the minimum deviation from the code; and Is unlikely to result in harmful environmental consequences. • Water quality will be equal to water quality without the variance. 10 VARIANCE CONDITIONS 1. Slope stabilization for areas of existing erosion adjacent to the lots, will be provided with grouted rip-rap or approved equivalent method. [ VARIANCE CONDITIONS 2. Slope stabilization in area of cut over 8 feet will be provided by terracing, 25 feet at 15% grade …
ITEM FOR ENVIRONMENTAL COMMISSION AGENDA COMMISSION MEETING DATE: May 1, 2024 NAME & NUMBER OF PROJECT: Bridle Ridge at Wildhorse Ranch C8-2023-0259 NAME OF APPLICANT OR ORGANIZATION: Kimley Horn (Kevin Burks) LOCATION: 10501 ‰ BLUE BLUFF RD, Austin, TX 78653 COUNCIL DISTRICT: District One ENVIRONMENTAL REVIEW STAFF: Pamela Abee-Taulli, Environmental Program Coordinator Development Services Department 512.974.1879 / pamela.abee-taulli@austintexas.gov WATERSHED: REQUEST: STAFF RECOMMENDATION: STAFF CONDITIONS: Gilleland Creek Watershed, Suburban Classification, Desired Development Zone Variance request is as follows: Request to vary from: 1) 25-8-341 to allow cut over four (4) feet, to 15 feet. 2) 25-8-342 to allow fill over four (4) feet, to 15 feet. Staff recommends this variance, having determined the findings of fact to have been met. 1. Slope stabilization for areas of existing erosion adjacent to the lots, will be provided with grouted rip-rap or approved equivalent method. 2. Slope stabilization in area of cut over 8 feet will be provided by terracing, 25 feet at 15% grade and 20 feet at 5% grade, and revegetation with native grasses and forbs (per Standard Specifications Manual 609S.5). 3. Fill over 8 feet will be contained with engineered walls. 4. The water quality ponds will be biofiltration ponds. Page 1 of 15 Development Services Department Staff Recommendations Concerning Required Findings Project Name: Bridle Ridge at Wildhorse Ranch Ordinance Standard: Comprehensive Watershed Ordinance and Wildhorse Ranch Planned Unit Development (PUD) Variance Request: Request to vary from: 1) 25-8-341 to allow cut over four (4) feet, to 15 feet. 2) 25-8-342 to allow fill over four (4) feet, to 15 feet. A. Land Use Commission variance determinations from Chapter 25-8-41 of the City Code: 1. The requirement will deprive the applicant of a privilege or the safety of property given to owners of other similarly situated property with approximately contemporaneous development; Other owners with similarly situate properties and contemporaneous development Yes have received similar variances for grading. Turner’s Crossing (C8J-2018-0091) with cut and fill to 15 feet, Northwind Apartments (SP-2021-0384C.SH) with cut to 12 and fill to 17 feet, and Blueridge Multifamily at Wildhorse Ranch (SP-2022-0426C.SH) with cut to 12 and fill to 10 feet, are all residential projects on sites with rolling topography generally within the 0-15% slope category. In order to comply with the Americans with Disabilities Act (ADA) requiring 2% cross slope at intersection crosswalks on the local and collector roadways, and to meet Transportation Criteria Manual (TCM) …
Infill Plats & Site Plan Lite, Part 2: Overview of Staff Proposal Codes & Ordinances Joint Committee | April 1, 2024 Brent Lloyd, DSD Development Officer Agenda Items • Discuss proposed code amendments for: 1. Infill Plats 2. Site Plan Lite, Part 2 • Questions & Answers Infill Plats Subdivision Overview Subdivision Plats • The division of land into one or more lots for the purpose of sale, transfer, development, or extension of utilities. • Unless an exception applies, only land within an approved subdivision plat may be developed. • Infrastructure and amenities dedicated at subdivision serve multiple lots, which can then be developed independently. — Commercial & Residential Subdivisions Subdivision Overview (cont’d) Subdivision Types and Order of Process • Preliminary Plan • Final Plat • Subdivision Construction Plans • Re-subdivision Effect of Subdivision on Residential Development • “Fee Simple” Ownership vs. “Condominium Regimes” Greenfield Subdivision Subdivision Construction Plan - Build Infrastructure Residential Subdivision Infill Plats – Challenges • In the platting context, “infill” is the re- subdivision of lots in existing single-family subdivisions into new, smaller lots. • Current regulations, particularly drainage & water quality, are tailored to greenfield subdivisions rather than residential infill. Infill Plat Process - Council Direction Goals of Resolution No. 20230504-023: • Establish an efficient process to create infill lots within residential subdivisions, thereby facilitating fee-simple ownership and small-lot development form. • Right-size regulations to the scale and intensity of infill development. • Explore making waivers and variances administrative. • Include other changes to facilitate creation of infill lots. Subdivision-Related Improvements Adopted in 2023 Ordinance No. 20230831-141 • Eliminated commission approvals for plats, which means all applications without variances may be approved by staff. • Streamlined application submittal requirements. • Extended application deadlines. • Modified flag lot regulations. Summary of Infill Plat Proposal Response to Resolution No. 20230504-023 • Targeted changes to regulations for residential resubs. aimed at: — Making the process more efficient and less costly for small-lot developments that are comparable in scale & intensity to development currently permitted under HOME 1. — Ensuring that drainage requirements are: Right-sized to infill development Sufficient to ensure that development does not increase risk of lot-to-lot flooding. Infill Plat Proposal (cont’d) Drainage Plan In-Lieu of Onsite Detention & Drainage Studies • For resubdivisions of platted residential lots, onsite detention & drainage studies would not be required for development that: — Does not exceed: (b) …
C20-2023-045 ORDINANCE AMENDMENT REVIEW SHEET Amendment: C20-2023-045 Site Plan Lite, Phase 2 & Infill Plats Description: These proposed amendments to respond to separate council initiatives: Resolution No. 20221201-048 (“Site Plan Lite”) and Resolution No. 20230504-023 (“Infill Plats”). The amendments, which will be included in a single ordinance, facilitate development of missing middle housing. Background: — Site Plan Lite Phase 2 On December 1, 2022, City Council approved Resolution No. 20221201-048 initiating Land Development Code (“LDC”) amendments to facilitate the creation of missing middle housing by scaling site plan review requirements for residential projects of three to sixteen units. As Phase 1 of the project, Council adopted Ordinance No. 20230720-158 on July 20, 2023, creating a site plan exemption for projects having four or fewer residential units. For a few months following passage of the ordinance, DSD required projects utilizing the new process to obtain formal “site plan exemptions,” which is an added step beyond obtaining a residential building permit. Following passage of the initial HOME amendments, which modified the definition of “multi-family,” DSD now routes projects of one to three units directly to residential review without requiring a site plan exemption. These proposed amendments would complete Council’s direction from Resolution No. 20221201-048 by establishing a more streamlined review process for projects of 5 to 16 units located on a single lot. — Infill Plats On May 4, 2023, Council approved Resolution No. 20230504-023 initiating LDC amendments to facilitate the creation of infill lots within existing residential subdivisions, with the goal of expanding opportunities for “fee simple” ownership and easing the impact of non-zoning regulations on residential re-subdivisions. The proposed amendments would achieve this objective by modifying non-zoning regulations for infill development, thereby establishing a more streamlined review process. Summary of Proposed Code Amendment: 1 Below is a general summary of amendments proposed to implement the Infill Plat and Site Plan Lite resolutions. C20-2023-045 Modified Drainage Regulations I. — Background LDC Sec. 25-8-211(B)(3) exempts development with up to 8,000 square feet of impervious cover from the requirement to provide water quality controls on sites located outside of the Barton Springs Zone. However, the code provides no similar exemption for drainage regulations. This means that infill re-subdivisions and small-scale site plans are required to meet detention standards similar to those required for large-scale multi-family and commercial projects. The proposed amendments would tailor drainage regulations more closely to the scale and intensity of …
ENVIRONMENTAL COMMISSION RECOMMENDATION 20240501-005 Date: May 1st, 2024 Subject: Home 2, reduced compatibility standards, higher density housing near future light rail lines, and site development standards for EV charging Motion by: Second by: WHEREAS, evidence produced by researchers at the University of California at Berkeley1 (https://coolclimate.berkeley.edu/ ) indicates that higher population density in urban areas leads to lower greenhouse gas emissions per household, based on energy savings from shared walls in duplexes, townhomes, apartments, and condominiums, and based on better walkability, more mass transit use, and more trips made with bikes and scooters, AND WHEREAS, low-density urban sprawl consumes valuable grassland prairies, tree covered hill country, and other rural landcapes, AND WHEREAS, the Austin City Council is considering changes to the City Code Title 25 Land Development Code to: • Allow smaller lot sizes (2,000 square feet) in single-family zoning districts, • Create regulations that allow properties to be used for charging electric vehicles, • Create regulations, including a density bonus program that modifies height and compatibility in exchange for community benefits, for properties that are located within a half mile of the planned Phase 1 Light Rail and Priority Extensions (also known as the Equitable Transit-Oriented Development (ETOD) overlay), • Revise regulations that apply to flag lots and small lots, • Revise height, building placement, and other related regulations that apply to property and are in addition to the base zoning regulations (also known as Compatibility Standards), reducing the extent of compatibility regulations to 75 ft. All of these will help reduce greenhouse gas emissions directly or subsequently with higher population density. THEREFORE, The Environmental Commission recommends endorsing these changes to the City Code Title 25 Land Development Code and offers the following additional recommendations: 1 Christopher M. Jones and Daniel M. Kammen, Spatial Distribution of U.S. Household Carbon Footprints Reveals Suburbanization Undermines Greenhouse Gas Benefits of Urban Population Density. Environ. Sci. Technol., 2014, 48 (2), pp 895–902. 1 of 2 • Loosening development restrictions to allow denser housing could lead to the involuntary displacement of low-income renters, and the City should track this displacement and take steps to assist in relocating displaced tenants. If possible, the City should take steps to incentivize new higher density housing in high opportunity neighborhoods near jobs and existing mass transit. • • Over time, the City should track changes in transit use, micromobility use, walkability in new higher density developments to verify …
Population Density and Greenhouse Gas Emissions per Household Dr. David W. Sullivan The University of Texas at Austin Center for Energy and Environmental Resources Cell 512-914-4710; Email sullivan231@mail.utexas.edu Details • Researchers at Univ. California at Berkeley have published studies on greenhouse gas emissions per household in the U.S. • They maintain a Website at https://coolclimate.berkeley.edu. • Coolclimate maps show that the inner city areas of big cities have the lowest greenhouse gas emissions per household, owing to lower energy consumption & shorter/fewer motor vehicle trips. • In their analysis of the U.S. by zip code, the researchers found lower emissions per household in denser areas, but the relationship was weak (R2 = 0.04). Emissions / Household vs Zip Code Population Density Problem • As the graph shows there is a wide range of emission rates at low population densities. This is because there are many small towns where trips may be shorter and consumption lower so emissions are low, whereas there are also many suburbs with low density but lots of driving and high consumption with high emissions. • I downloaded the data and averaged the zipcodes with similar densities and got better results. • I selected the zip codes in the Austin 5-county MSA and also got better results. Emissions / Household vs Zip Code Population Density bins at 10,000 person increments (R2 = 0.26) Emissions / Household vs Zip Code Population Density 80 Austin MSA Zip Codes (R2 = 0.39) (R2 = 0.34), excluding UT West Campus
ENVIRONMENTAL COMMISSION MOTION 20240501-002 Date: May 1, 2024 Subject: Bridle Ridge at Wildhorse Ranch C8-2023-0259 Motion by: Jennifer Bristol Seconded by: Perry Bedford WHEREAS, the Environmental Commission recognizes the applicant is requesting two variances 1) 25-8-341 to allow cut over four (4) feet, to 15 feet. 2) 25-8-342 to allow fill over four (4) feet, to 15 feet. WHEREAS, the Environmental Commission recognizes the site is located in Gilleland Creek Watershed, Suburban Classification; and WHEREAS, the Environmental Commission recognizes that Staff recommends the variance with conditions. THEREFORE, the Environmental Commission recommends the variance request with the following conditions: Staff Conditions: 1. Slope stabilization for areas of existing erosion adjacent to the lots, will be provided with grouted rip-rap or approved equivalent method. 2. Slope stabilization in area of cut over 8 feet will be provided by terracing, 25 feet at 15% grade and 20 feet at 5% grade, and revegetation with native grasses and forbs (per Standard Specifications Manual 609S.5). 3. Fill over 8 feet will be contained with engineered walls. 4. The water quality ponds will be biofiltration ponds. 1. Environmental Commission Conditions:Review the carrying capacity of water/ electric/ sewer to accommodate additional units per lot in reference to Home-2 Code changes if that Code passes City Council. 2. Reduce the impervious cover and reduce the need for the cut and fill by removing or reducing the houses in the dark green / steepest slopes area. 3. Utilize the HOA guidelines to insure the native plants are utilized throughout the property not just on the terracing. 4. Plant native trees on the housing lots that are naturally found in the blackland prairie. 5. Increase the native flowers and shrubs that support pollinators. 1 6. Provide home owners education or signage that helps them understand when it is best to mow or not mow to better support pollinators and migratory birds. VOTE: 9-0 For: Perry Bedford, Jennifer Bristol, Richard Brimer, Peter Einhorn, Mariana Krueger, Colin Nickells, Haris Qureshi, Melinda Schiera, David Sullivan Against: None Recuse: None Absent: Hanna Cofer Perry Bedford, Environmental Commission Chair Attest: 2
ENVIRONMENTAL COMMISSION MOTION 20240501-003 Date: May 1, 2024 Subject: Infill Plat and Site Lite Part 2 Amendments Motion by: Jennifer Bristol Seconded by: Mariana Kruger WHEREAS, the Environmental Commission recognizes the Code Amendments related to Home-2 known as Infill Plats and Site Lite Part 2 are a compilation of directives from City Council; WHEREAS, the Environmental Commission has been given a presentation from Staff on Infill Plats and Site Plan Lite; and WHEREAS, the Environmental Commission recognizes that Staff recommends these amendments. THEREFORE, the Environmental Commission recommends the code amendments with the following Environmental Commission recommendations and comments: 1. Request that the City Council recognize that the Environmental Commission was not involved in the review and recommendation of the Code changes. 2. The Environmental Commission was not provided a copy of the Code to review before or 3. The Environmental Commission is concerned that these Code changes inequitably may at the meeting. impact low-income neighborhoods. 4. The Environmental Commission was only presented watershed and drainage information and not how this impacts tree protections, tree canopy reduction, light pollution, or increase to utilities, including wastewater. 5. The Environmental Commission is concerned about how this impacts homes in the local flooding areas or homes that are on the edge of the floodplains. 6. The Environmental Commission is concerned about neighbor-to-neighbor flooding due to poor drainage, including “ghost drainage” that is done without permits. 7. The Environmental Commission was not presented the study that surveyed the size of lots in the neighborhoods and what areas would be impacted the most. 8. How was the community involved in the Code changes? 9. Request that the public is well informed in multiple ways about the new changes, how that will impact them, and how they can utilize the Code legally. 10. Request that the public is made aware of the process for adjacent homeowners to protest or improve changes to a neighbor’s lot. 11. The Environmental Commission is concerned about the increase of administrative approval rather than citizen-driven boards and commissions. 12. The Environmental Commission is in favor of increasing access to affordable homes and increasing density where possible. 1 For: Perry Bedford, Jennifer Bristol, Richard Brimer, Peter Einhorn, Mariana Krueger, Colin Nickells, Haris Qureshi, Melinda Schiera Against: None Abstain: David Sullivan Recuse: None Absent: Hanna Coffer VOTE: 8-0 Approved By: Perry Bedford, Environmental Commission Chair 2
ENVIRONMENTAL COMMISSION RECOMMENDATION 20240501-005 Date: May 1st, 2024 Subject: HOME-2 and Population Density and Greenhouse Gas Emissions Motion by: David Sullivan Second by: Peter Einhorn WHEREAS, researchers at the University of California at Berkeley1 (https://coolclimate.berkeley.edu/) indicate that higher population density in urban areas leads to lower greenhouse gas emissions per household, based on energy savings from shared walls in duplexes, townhomes, apartments, and condominiums, improved walkability, more mass transit use, and more trips made with bikes and scooters, AND WHEREAS, low-density urban sprawl consumes valuable grassland prairies, tree-covered hill country, farmland, and other rural landscapes, and encroaches on wildlife habitat, AND WHEREAS, the Austin City Council is considering changes to the City Code Title 25 Land Development Code to: • Allow smaller lot sizes (2,000 square feet) in single-family zoning districts, • Create regulations that allow properties to be used for charging electric vehicles, • Create regulations, including a density bonus program that modifies height and compatibility in exchange for community benefits, for properties that are located within a half mile of the planned Phase 1 Light Rail and Priority Extensions (also known as the Equitable Transit- Oriented Development (ETOD) overlay), • Revise regulations that apply to flag lots and small lots, • Revise height, building placement, and other related regulations that apply to property and are in addition to the base zoning regulations (also known as Compatibility Standards), reducing the extent of compatibility regulations to 75 ft. AND WHEREAS, all of these will help reduce greenhouse gas emissions directly or subsequently with higher population density. THEREFORE, The Environmental Commission recommends endorsing these changes to the City Code Title 25 Land Development Code and offers the following additional recommendations: • Because loosening development restrictions to allow denser housing could lead to the involuntary displacement of low-income renters, the City shall track this displacement and take steps to assist in relocating displaced tenants. 1 Christopher M. Jones and Daniel M. Kammen, Spatial Distribution of U.S. Household Carbon Footprints Reveals Suburbanization Undermines Greenhouse Gas Benefits of Urban Population Density. Environ. Sci. Technol., 2014, 48 (2), pp 895–902. 1 of 2 • If possible, the City shall take steps to incentivize new higher-density housing in high- opportunity neighborhoods near jobs and existing mass transit. • The City shall track changes in transit use, micromobility use, and walkability in new higher-density developments to verify the predicted emission savings on an annual basis and report …
