Environmental Commission

Nov. 20, 2020

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Nov. 20, 2020

20201120-002a: 2020 PARD Annual Concessions Report Recommendation — original pdf

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1 ENVIRONMENTAL COMMISSION MOTION 20201120 002a Subject: 2020 Annual Report of City of Austin Parks and Recreation Department Managed Concessions on Town Lake Motion by: Kevin Ramberg Seconded by: Linda Guerrero Date: November 20, 2020 RATIONALE: WHEREAS, the Environmental Commission has received a staff briefing of the 2020 Annual Report of City of Austin Parks and Recreation Department (PARD) Managed Concessions on Town Lake. THEREFORE, the Environmental Commission recommends continuation of the concession contracts on Lady Bird Lake Park with the following; Environmental Commission Conditions: 1. Consistent with the Environmental Commission’s previous recommendations: in the 2021 Annual Report, PARD staff will verify that three years of records for marine waste disposal have been maintained for any entity that pumps waste on Lady Bird Lake, and that these monthly records are included in the public record going forward. 2. PARD staff should review the number of public and private boats that are typically on Lady Bird Lake, and if there is a capacity issue, that should be considered; including consultation with the City of Austin rescue teams and the Watershed Protection Department. 3. PARD should continue working on consistent terms and conditions in the various contracts to the extent 4. Include the waste pump-out data in the 2021 Annual Report. 5. Consider the physical, social, environmental capacity of Lady Bird Lake Park when anticipating 6. Provide an update on any new concessions, including the Seaholm Power Plant and the Zilker Plan. practicable. upcoming solicitations. VOTE 9-0 For: Gordon, Nill, Neely, Bedford, Thompson, Smith, Ramberg, Guerrero, Coyne Against: None Abstain: None Recuse: None Absent: Creel, Maceo Approved By: Linda Guerrero, Environmental Commission Chair 2

Nov. 20, 2020

20201120-003a: Concordia University Campus Residence Hall SP-2020-0038C Recommendation — original pdf

ENVIRONMENTAL COMMISSION MOTION 20201120 003a Subject: Concordia University Campus Residence Hall, SP-2020-0038C Motion by: Katie Coyne Seconded by: Wendy Gordon Date: November 20, 2020 RATIONALE: WHEREAS, the Environmental Commission recognizes the applicant is requesting a variance from the Lake Austin Watershed Ordinance No. 840301-F, LDC Chapter 9-10, Section 9-10-409(b) - for a cut exceeding four feet; WHEREAS, the Environmental Commission recognizes the applicant is requesting a variance from Lake Austin Watershed Ordinance No. 840301-F, LDC Chapter 9-10, Section 9-10-409(a) – for fill exceeding four feet; and WHEREAS, the Environmental Commission recognizes that staff recommends these variances (with conditions) having determined the required Findings of Fact have been met. THEREFORE, the Environmental Commission recommends the variance request with the following; Staff Conditions: 1. Subject to the Void and Water Flow Mitigation Rule (City Environmental Criteria Manual 1.12.0 and City Standards Specification Manual No. 658S) provision that all trenching greater than 5 feet deep must be inspected by a qualified Texas Professional Geoscientist or their representative; 2. Preserve the top 10 inches of topsoil to be used onsite; and 3. Increased tree mitigation and landscaping for areas of fill to stabilize erosion as shown on landscape plan submitted in this variance packet. VOTE 8-0 For: Gordon, Nill, Neely, Bedford, Thompson, Smith, Guerrero, Coyne Against: None Abstain: None Recuse: Ramberg Absent: Creel, Maceo 1 Approved By: Linda Guerrero, Environmental Commission Chair 2

Nov. 20, 2020

20201120-003b: Ullrich Water Treatment Plant, Revision 2, SPC-03-0005C(R2) recommendation — original pdf

1 ENVIRONMENTAL COMMISSION MOTION 20201120 003b Subject: Albert H. Ullrich Water Treatment Plant, Revision 2, SPC-03-0005C(R2) Motion by: Kevin Ramberg Seconded by: Perry Bedford Date: November 20, 2020 RATIONALE: WHEREAS, the Environmental Commission recognizes the applicant is requesting seven variances from code including: 1) LDC 25-8-261 to allow development in the Critical Water Quality Zone, and by extension in the Water Quality Transition Zone of a Water Supply Rural watershed in the Edwards Aquifer Recharge Zone South [LDC 25-8-452] for: a) Phase 2: switchgear enclosure, duct bank and access drive, and b) Phase 3: containment basin, electric building and related duct banks, sludge changeover facility, 6” water line; 2) LDC 25-8-281 to allow construction within a rimrock Critical Environmental Feature buffer for: a) Phase 2: duct bank and access drive; 3) LDC 25-8-301 to allow construction of a driveway on a slope with a gradient of more than 15 percent for: a) Phase 2: duct bank and access drive; 4) LDC 25-8-302(A)(1) to allow construction of a building on a slope with a gradient of more than 25 percent for: a) Phase 2: switchgear enclosure and b) Phase 3: sludge change-over facility; 5) LDC 25-8-341 to allow cut to sixteen (16) feet for: a) Phase 3: containment basin; 6) LDC 25-8-342 to allow fill to twelve (12) feet for: a) Phase 2: duct bank and access drive; and 7) LDC 25-8-423(C)(1)(a) to allow impervious cover to exceed the 20 percent limit for development in the uplands of a Water Supply Suburban watershed. WHEREAS, the Environmental Commission recognizes that Staff recommends this variance (with conditions) having determined the required Findings of Fact have been met. THEREFORE, the Environmental Commission recommends the variance request with the following; Staff Conditions: electric station. VOTE 9-0 1. Applicant has designed permanent diversion and dissipation for the existing concentrated flow from the 2. Applicant has designed the rain gardens to avoid and preserve significant trees and has agreed to revegetate the rain gardens with native plants. 3. Applicant has redesigned the proposed road to preserve the wetland at the base of the rimrock. For: Gordon, Nill, Neely, Bedford, Thompson, Smith, Guerrero, Coyne, Ramberg Against: None Abstain: None Recuse: None Absent: Creel, Maceo Approved By: Linda Guerrero, Environmental Commission Chair 2

Nov. 20, 2020

20201120-003c: Appeal request from Patrick Fulker at 13213 Villa Park Drive Recommendation — original pdf

1 ENVIRONMENTAL COMMISSION MOTION 20201120 003c Subject: Appeal request from Patrick Fulker at 13213 Villa Park Drive Motion by: Kevin Ramberg Seconded by: Linda Guerrero Date: November 20, 2020 RATIONALE: WHEREAS, the Environmental Commission recognizes the applicant’s request for the Commission to consider a request from a private property owner, Patrick Fulker to appeal the Public Works Urban Forester’s denial of application for an administrative approval, as provided in City Code Section 6-3-91, to remove a 20-inch public tree located at 13213 Villa Park Drive, Austin, Texas 78729. WHEREAS, the Environmental Commission recognizes that City of Austin Urban Forester staff have denied the request to remove the 20-inch cottonwood tree in public ROW at the above-noted address; and WHEREAS, the Environmental Commission may overrule, sustain or modify the determination per City Code Section 6-3-93. THEREFORE, the Environmental Commission recommends sustaining the denial of the request to remove the public tree based on the following justification; 1) 2) Per City staff, the 20-inch cottonwood is in good health and within public right of way; and with the following understanding that it is not the Environmental Commission’s wishes to disallow the property owner from the same right to appeal of this decision in the future if more conclusive evidence of conflicts from the 20-inch cottonwood and Mr. Fulker’s waterline can be presented. VOTE 9-0 For: Gordon, Nill, Bedford, Thompson, Smith, Guerrero, Coyne, Maceo, Ramberg Against: None Abstain: None Recuse: None Absent: Creel, Neely Approved By: Linda Guerrero, Environmental Commission Chair 2

Nov. 20, 2020

Approved Minutes — original pdf

ENVIRONMENTAL COMMISSION MEETING MINUTES Friday, November 20, 2020 The Environmental Commission convened in a public meeting on Friday, November 20, 2020 with Social Distancing Modifications via remote video conferencing. Commissioners in Attendance: Ryan Nill Pam Thompson Curtis Smith Kevin Ramberg Linda Guerrero Perry Bedford Katie Coyne Mary Ann Neely Wendy Gordon Peggy Maceo Commissioners Absent: Andrew Creel Staff in Attendance: Kaela Champlin Chris Herrington Margaret Stenz Keith Mars Kristy Nguyen Lisa Killander Liz Johnston Mike McDougal Pamela Abee-Taulli Patricia Rossett Radmon Rice Suzanne Piper CALL TO ORDER Commissioner Coyne called the meeting to order at 1:05 P.M. CITIZEN COMMUNICATION: GENERAL The first ten speakers who register to speak no later than noon the day before the meeting will be allowed a three-minute allotment to address their concerns regarding items not posted on the agenda. Speakers Dave Piper 1 1. 2. APPROVAL OF MINUTES AND ACTION a. Approval of the October 21, 2020 Environmental Commission Meeting Minutes (5 minutes) A motion to approve the minutes of the October 7, 2020 Environmental Commission meeting failed on Commissioner Bedford’s motion, Commissioner Smith’s second. A motion to approve the minutes of the October 7, 2020 Environmental Commission meeting were approved on Commissioner Bedford’s motion, Commissioner Ramberg’s second on a 8-0 vote. Commissioner Nill abstained. Commissioner Creel was absent. Commissioner Maceo was off the dais. ITEMS FOR CONSIDERATION AND POSSIBLE ACTION a. Make a recommendation regarding the creation, continuation, or termination and status of Lady Bird Lake concessions contained in the 2020 Annual Report of City of Austin/Parks and Recreation Department Managed Concessions on Town Lake— Margaret Stenz, Contract Management Specialist III, Parks and Recreation Department (15 minutes) A motion to recommend continuation of the concession contracts on Lady Bird Lake Park with conditions was approved on Commissioner Ramberg’s motion, Commissioner Guerrero’s second on a 9-0 vote. Commissioner Creel was absent. Commissioner Maceo was off the dais. 3. PUBLIC HEARINGS AND POSSIBLE ACTION a. Name: Concordia University Campus Residence Hall, SP-2020-0038C Applicant: Brandon Hamman, P.E., LEED AP – Kimley-Horn & Associates Location: 11400 Concordia University Drive, Austin, TX, 78726 (District 6) Staff: Kristy Nguyen, Environmental Review Specialist Senior, Development Services Department Watershed: Bull Creek, Water Supply Suburban, Drinking Water Protection Zone Request: 1. Request to vary from Lake Austin Watershed Ordinance No. 840301-F, LDC Chapter 9-10, Section 9-10-409(b) - for cut exceeding four feet 2. Request to vary from Lake Austin Watershed Ordinance No. 840301-F, …

Nov. 4, 2020

Agenda — original pdf

Remote Meeting of the Environmental Commission November 4, 2020 at 6:00 P.M. Environmental Commission to be held November 4, 2020 with Social Distancing Modifications. Public comment will be allowed via telephone; no in-person input will be allowed. All speakers must register in advance (day before the scheduled meeting, November 3, 2020 by noon). All public comment will occur at the beginning of the meeting. To speak remotely at the November 4, 2020 Environmental Commission Meeting, residents must: •Call or email the commission liaison at: Kaela Champlin (512) 974-3443 or Kaela.Champlin@austintexas.gov, no later than noon, (the day before the meeting). The information required is the speaker name, item number(s) they wish to speak on, whether they are for/against/neutral, and a telephone number or email address. •Once a request to speak has been called in or emailed to the board liaison, residents will receive either an email or phone call providing the telephone number to call on the day of the scheduled meeting. •Speakers must call in at least 15 minutes prior to meeting start in order to speak, late callers will not be accepted and will not be able to speak. •Speakers will be placed in a queue until their time to speak. •Handouts or other information may be emailed to Kaela.Champlin@austintexas.gov by noon the day before the scheduled meeting. This information will be provided to Board and Commission members in advance of the meeting. •Residents may watch the meeting here: http://www.austintexas.gov/page/watch-atxn-live 1 Reunión del Environmental Commission Fecha de la reunion (4 de noviembre de 2020 a las 6:00 P.M.) La junta se llevará con modificaciones de distanciamiento social. Se permitirán comentarios públicos por teléfono; no se permitirá ninguna entrada en persona. Todos los oradores deben registrarse con anticipación (3 de noviembre de 2020 antes del mediodía). Todos los comentarios públicos se producirán al comienzo de la reunión. Para hablar de forma remota en la reunión, los residentes deben: • Llame o envíe un correo electrónico al enlace de la junta en (512) 690-6729, Kaela.Champlin@gmail.com a más tardar al mediodía (el día antes de la reunión). La información requerida es el nombre del orador, los números de artículo sobre los que desean hablar, si están a favor / en contra / neutrales, y un número de teléfono o dirección de correo electrónico. • Una vez que se haya llamado o enviado por correo electrónico una solicitud para hablar al enlace de …

Nov. 4, 2020

20201104-003a: Albert H. Ullrich Water Treatment Plant, Revision 2, SPC-03-0005C(R2) Staff Presentation — original pdf

Pamela Abee-Taulli Environmental Review Specialist Senior Development Services Department Radmon Rice Environmental Specialist Watershed Protection Department ULLRICH LOW SERVICE PUMP STATION ELECTRICAL FEED RENEWAL 3602 1/2 REDBUD TRL UNIT C SPC-03-0005C(R2) PROJECT LOCATION Site Location Austin ETJ Austin City Limits Edwards Aquifer Recharge Zone Edwards Aquifer Contributing Zone 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[ PROJECT LOCATION Lake Austin Westlake Hills Lady Bird Lake PROPERTY DATA •Water Supply Rural • Bee Creek, Little Bee Creek, and Lake Austin watersheds •Water Supply Suburban • Lady Bird Lake watershed •Drinking Water Protection Zone •Full Purpose Jurisdiction •Edwards Aquifer Recharge Zone •Wetland & Rimrock Critical Environmental Features •Council District 8 CONSTRAINTS Existing plant from 2003 CONSTRAINTS Steep slopes CONSTRAINTS Multiple Critical Water Quality Zones & Water Quality Transition Zones CWQZ WQTZ CONSTRAINTS Rimrock & Wetland CEFs Rimrock Wetlands BACKGROUND The plan proposes 6 projects to upgrade an existing City of Austin water treatment plant. The purpose is to improve operator and environmental safety by eliminating potential hazards and to upgrade miscellaneous plant processes to ensure the plant can reliably deliver drinking water. 6 PROJECTS In two phases. •Phase 2 •Phase 3 Phase 2 Phase 3 PHASE 2 1. Switchgear enclosure (#7) 2. Duct bank and access drive (#8) 8 7 1. Containment basin 3. Sludge changeover facility PHASE 3 2. Electric building and 4. 6-inch water line related duct banks 7 VARIANCE REQUESTS 1. Vary LDC 25-8-261 to allow development in the Critical Water Quality Zone, and by extension in the Water Quality Transition Zone of a Water Supply Rural watershed in the Edwards Aquifer Recharge Zone South [LDC 25-8-452]. 2. Vary LDC 25-8-281 to allow construction within a rimrock Critical Environmental Feature buffer. 3. Vary LDC 25-8-301 to allow construction of a driveway on a slope with a gradient of more than 15 percent. 4. Vary LDC 25-8-302(A)(1) to allow construction of a building on a slope with a gradient of more than 25 percent 7 VARIANCE REQUESTS 5. Vary LDC 25-8-341 to allow cut to sixteen …

Nov. 4, 2020

20201104-003a: Albert H. Ullrich Water Treatment Plant, Revision 2, SPC-03-0005C(R2) variance packet Part 1 of 2 — original pdf

MEMORANDUM TO: Linda Guerrero, Chair, Environmental Commission FROM: Pamela Abee-Taulli, Environmental Review, DSD DATE: October 21, 2020 SUBJECT: Albert H. Ullrich Water Treatment Plant, Revision 2 Variances Dear Chair Guerrero, Ullrich Water Treatment Plant, operated by Austin Water Utility, is critical to providing the City with safe drinking water. The site plan under review is a revision to the original site plan, which was approved in 2003. The plan includes multiple projects and will require seven Environmental variances, largely due to the site’s location in an environmentally sensitive area with numerous environmental constraints. Because of the unusually high number of variances, I have taken the uncommon step of providing a single set of findings for all the variances, rather than one set of findings for each variance. Additionally, I am including this memo to introduce the list of proposed projects. The overall purpose of the plan revision under review is to improve operator and environmental safety by eliminating potential hazards and to upgrade miscellaneous plant processes to ensure the plant can reliably deliver drinking water. The sludge change-over structure replaces existing structures that require confined space entry. Other improvements provide safety washdown areas and a looped, potable water supply to the facility. The spill containment structure will contain fugitive spills that may enter the existing storm drain system from chemical delivery areas and will prevent their discharge into Little Bee Creek. The Low Service Pump Station Electrical Feed Renewal project includes construction of a new electrical building, retaining walls, electrical and mechanical equipment, parking areas, access road, and duct bank routing. Thank you for your consideration. Sincerely, Pamela Abee-Taulli, DSD Radmon Rice, WPD 1 ITEM FOR ENVIRONMENTAL COMMISSION AGENDA COMMISSION MEETING DATE: November 4, 2020 NAME & NUMBER OF PROJECT: Albert H. Ullrich Water Treatment Plant, Revision 2 SPC-03-0005C(R2) NAME OF APPLICANT OR ORGANIZATION: Shari Pape, MWM Design Group LOCATION: 3602 ½ Redbud Trail, Austin, TX, 78746 COUNCIL DISTRICT: District 8 ENVIRONMENTAL REVIEW STAFF: Pamela Abee-Taulli, Environmental Review Specialist Senior, Development Services Department, 512-974-1879, pamela.abee- taulli@austintexas.gov. WATERSHED: REQUEST: Radmon Rice, Environmental Specialist, Watershed Protection Department, 512-974-3429, radmon.rice@austintexas.gov. Bee Creek, Little Bee Creek, and Lake Austin watersheds are classified Water Supply Rural. Lady Bird Lake watershed is classified Water Supply Suburban. Drinking Water Protection Zone 1. LDC 25-8-261 to allow development in the Critical Water Quality Zone, and by extension in the Water Quality Transition Zone of a Water Supply Rural …

Nov. 4, 2020

20201104-003a: Albert H. Ullrich Water Treatment Plant, Revision 2, SPC-03-0005C(R2) variance packet Part 2 of 2 — original pdf

Case No.: (City use only) Environmental Resource Inventory For the City of Austin Related to LDC 25-8-121, City Code 30-5-121, ECM 1.3.0 & 1.10.0 The ERI is required for projects that meet one or more of the criteria listed in LDC 25-8-121(A), City Code 30-5-121(A). 1. SITE/PROJECT NAME: 2. COUNTY APPRAISAL DISTRICT PROPERTY ID (#’s): 3. ADDRESS/LOCATION OF PROJECT: 4. WATERSHED: 5. THIS SITE IS WITHIN THE (Check all that apply) Edwards Aquifer Recharge Zone* (See note below) .................. YES No Edwards Aquifer Contributing Zone*.................................. YES No Edwards Aquifer 1500 ft Verification Zone* ....................... YES No Barton Spring Zone* .......................................................... YES No *(as defined by the City of Austin – LDC 25-8-2 or City Code 30-5-2) Note: If the property is over the Edwards Aquifer Recharge zone, the Hydrogeologic Report and karst surveys must be completed and signed by a Professional Geoscientist Licensed in the State of Texas. 6. DOES THIS PROJECT PROPOSE FLOODPLAIN MODIFICATION?.......YES** NO If yes, then check all that apply:  (1) The floodplain modifications proposed are necessary to protect the public health and safety;  (2) The floodplain modifications proposed would provide a significant, demonstrable environmental benefit, as determined by a functional assessment of floodplain health as prescribed by the Environmental Criteria Manual (ECM), or  (3) The floodplain modifications proposed are necessary for development allowed in the critical water quality zone under LDC 25-8-261 or 25-8-262, City Code 30-5-261 or 30-5-262.  (4) The floodplain modifications proposed are outside of the Critical Water Quality Zone in an area determined to be in poor or fair condition by a functional assessment of floodplain health. ** If yes, then a functional assessment must be completed and attached to the ERI (see ECM 1.7 and Appendix X for forms and guidance) unless conditions 1 or 3 above apply. 7. IF THE SITE IS WITHIN AN URBAN OR SUBURBAN WATERSHED, DOES THIS PROJECT PROPOSE A UTILITY LINE PARALLEL TO AND WITHIN THE CRITICAL WATER QUALITY ZONE? ......................................................... YES*** NO ***If yes, then riparian restoration is required by LDC 25-8-261(E) or City Code 30-5-261(E) and a functional assessment must be completed and attached to the ERI (see ECM1.5 and Appendix X for forms and guidance). 8. There is a total of (#’s) Critical Environmental Feature(s)(CEFs) on or within150 feet of the project site. If CEF(s) are present, attach a detailed DESCRIPTION of the CEF(s), color PHOTOGRAPHS, the CEF WORKSHEET and …

Nov. 4, 2020

20201104-003b: Concordia University Campus Residence Hall SP-2020-0038C variance packet Part 1 of 2 — original pdf

ITEM FOR ENVIRONMENTAL COMMISSION AGENDA Concordia University Campus Residence Hall, SP-2020-0038C Brandon Hamman, P.E., LEED AP – Kimley-Horn & Associates LOCATION: 11400 Concordia University Drive, 78726 COUNCIL DISTRICT: District 6 ENVIRONMENTAL REVIEW STAFF: Kristy Nguyen, Environmental Review Specialist Senior, Development Services Department, (512) 974-3035, Kristy.Nguyen@austintexas.gov WATERSHED: Bull Creek, Water Supply Suburban, Drinking Water Protection Zone COMMISSION MEETING DATE: NAME & NUMBER OF PROJECT: NAME OF APPLICANT OR ORGANIZATION: REQUEST: STAFF RECOMMENDATION: STAFF CONDITIONS: Variance request is as follows: Request to vary from Lake Austin Watershed Ordinance No. 840301-F, Section 9-10-409(b) – for a cut exceeding four feet Staff recommends this variance, having determined the findings of fact to have been met. 1. Subject to the Void and Water Flow Mitigation Rule (City Environmental Criteria Manual 1.12.0 and City Standards Specification Manual No. 658S) provision that all trenching greater than 5 feet deep must be inspected by a qualified Texas Professional Geoscientist or their representative; 2. Preserve the top 10 inches of topsoil to be used onsite; and 3. Increased tree mitigation and landscaping for areas of fill to stabilize erosion as shown on landscape plan submitted in this variance packet. Staff Findings of Fact and Exhibits Development Services Department Staff Recommendations Concerning Required Findings Concordia University Campus Residence Hall, SP-2020-0038C Project Name: Ordinance Standard: Schlumberger Planned Development Area, Ordinance No. 20070215-042 (as amended) and Lake Austin Watershed Ordinance No. 840301-F, as stated in the Planned Development Area Section 9-10-409(b) – for a cut exceeding four feet Variance Request: Include an explanation with each applicable finding of fact. Land Use Commission variance determinations from Section 9-10-377 of the A. City Code: 1. Are there special circumstances applicable to the property involved where strict application deprives such property owner of privileges or safety enjoyed by other similarly situated property with similarly timed development? In site plan case #SP-2007-0231C, a variance to Lake Austin Yes Ordinance #840301-F, Sections 9-10-409(a) and 9-10-409(b) was granted for a max cut of +/-5.8’ and a max fill of +/- 17.5’ to construct a parking area, baseball field, and fieldhouse. Thereafter, a variance to the same code sections was granted for a max cut of +/-9.25’ and a max fill of +/- 14.85’ to construct a water quality and detention facility, a water quality channel, a softball field, and associated parking in site plan case #SP-2013-0476C. 2. Does the project demonstrate minimum departures from the terms of the …

Nov. 4, 2020

20201104-003b: Concordia University Campus Residence Hall, SP-2020-0038C Staff Presentation — original pdf

CONCORDIA CAMPUS RESIDENCE HALL 11400 CONCORDIA UNIVERSITY DRIVE AUSTIN, TX 78726 SP-2020-0038C Kristy Nguyen Environmental Review Specialist Senior Development Services Department 1 Concordia Campus Residence Hall SP-2020-0038C Site Location Austin ETJ Austin City Limits Edwards Aquifer Recharge Zone Edwards Aquifer Contributing Zone 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. 0 5 10 Miles[ 2 PROPERTY DATA • Bull Creek, Water Supply Suburban Classification • Drinking Water Protection Zone • Full Purpose Jurisdiction • Located over Edwards Aquifer Recharge Zone • Council District 6 • Subject to Schlumberger Planned Development Area, Ordinance No. 20070215-042 (as amended) and Lake Austin Watershed Ordinance No. 840301-F, as stated in the Planned Development Area 3 VICINITY EXHIBIT 4 VARIANCE REQUEST Lake Austin Watershed Ordinance No. 840301-F - Section 9-10-409(a) – for a fill exceeding four feet - Section 9-10-409(b) – for a cut exceeding four feet 5 FINDINGS OF FACT LAKE AUSTIN WATERSHED ORDINANCE, SECTION 9-10-377 TO VARY FROM SECTION 9-10- 409(A) – FOR A FILL EXCEEDING FOUR FEET 6 FINDINGS OF FACT LAKE AUSTIN WATERSHED ORDINANCE SECTION 9-10-377 1. Are there special circumstances applicable to the property involved where strict application deprives such property owner of privileges or safety enjoyed by other similarly situated property with similarly timed development? Staff Determination: Yes In site plan case #SP-2007-0231C, a variance to Lake Austin Ordinance #840301-F, Sections 9-10-409(a) and 9-10-409(b) was granted for a max cut of +/-5.8’ and a max fill of +/- 17.5’ to construct a parking area, baseball field, and fieldhouse. Thereafter, a variance to vary from the same code sections was granted for a max cut of +/-9.25’ and a max fill of +/- 14.85’ to construct a water quality and detention facility, a water quality channel, a softball field, and associated parking in site plan case #SP-2013-0476C. 7 FINDINGS OF FACT LAKE AUSTIN WATERSHED ORDINANCE SECTION 9-10-377 2. Does the project demonstrate minimum departures from the terms of the ordinance necessary to avoid such deprivation of privileges enjoyed by such other property and to facilitate a reasonable …

Nov. 4, 2020

20201104-003b: Concordia University Campus Residence Hall, SP-2020-0038C variance packet Part 2 of 2 — original pdf

E RIV D R U O B R A H K C O R R O C D O ( 7 K C 0 # ' H 2 R A 0 . 0 O R 0 . B 0 0 W O 0 . 2 5 W U I D R T O H ) D P R T C R I V E R D O O C C # K 2 0 0 H 5 A 0 0 R 2 7 B 5 O O R P R D T C R . EXISTING WALMART PROPERTY EXISTING ALARA APARTMENTS PROPERTY E V I R D Y T I S R E V I N U A I D R O C N O C 00 200' 400' GRAPHIC SCALE 200' PROPERTY LINE LIMITS OF CONSTRUCTION EXISTING SOFTBALL FIELD UNOCCUPIED SPRING D V O R O A L I P R . N T 9 C 0 A 8 G 2 E , P E G A . 6 S 2 5 E M E N T 150' CEF BUFFER 50' CWQZ 150' CEF BUFFER 50' CWQZ 100' WQTZ D R A I N V A O L G . E 9 0 E 8 A 2 S , E M E O P P G R . 6 N T T 2 5 C P D R O E C S # E O 2 R P 0 V R 0 E 7 T T 1 C 0 R 6 A 6 1 3 C T RIM ROCK F L 1 8 " R C R P ( I M S E = ) 9 = 9 5 4 4 8 . . 0 5 ± ± D F R I L M F F L L 1 2 8 = 4 " 9 1 8 " " R 5 R R C P C 3 . C P 2 P ( ± ( ( N S N E E ) W ) = = 9 ) = 9 4 9 4 4 6 6 . . 8 6 8 ± . 8 ± ± D R F I L M 1 = 8 " 9 R 5 C 5 . 0 P ± ( S W ) = 9 5 1 . 1 ± EXISTING BASEBALL FIELD PROPOSED LIMITS OF CONSTRUCTION ET T TT T T T …

Nov. 4, 2020

20201104-002a: Country Club Creek West at Roy G. Guerrero Park Update — original pdf

Country Club Creek West at Roy G Guerrero Park Environmental Commission November 4, 2020 Janna Renfro, P.E. Project Sponsor Watershed Protection Department 1 Project Area Roy G. Guerrero Colorado River Metro Park • 363 acres • Constructed drainage channel – Country Club West • Original drainage • channel – Country Club East Improvements constructed in 2010 2 Erosion Damage • 2015 Floods • Severe erosion created a shorter path to the river. • Pedestrian bridge collapsed • May 2015 ‐ December 2017: Erosion damaged ~1500 feet (5 acres) of drainage channel • 100s of trees lost • 2500 dump truck loads of sand and soil (~37,000 cubic yards) 3 Permanent Solution • ~2,000 linear feet of channel stabilization • Three concrete “drop structures” • Natural channel between structures • Bridge over middle structure above 500‐ year flood elevation 4 Temporary Repairs • Project No. 1 • 2017 • Protect Ballfields Interim Project № 1 Permanent Project 5 Temporary Repairs • Project No. 2: • 2018 • Stop headcut from moving upstream Interim Project № 2 Permanent Project 6 2019 – 2020 Update Items • Erosion Progresses • Three New Temporary Repair Projects • Emergency Affidavit • 60% Design Deliverable • Updated Construction Cost Estimate • Schedule 7 Temporary Repairs • Project No. 3: • 2019‐20 • Protect 54” Active Wastewater Line Interim Project № 3 Permanent Project 8 Temporary Repairs • Project No. 4: • 2020 • Protect Park Road Interim Project № 4 Permanent Project 9 Temporary Repairs • Project No. 5: • 2020 • Repair failed temporary headcut stabilization Interim Project № 5 Permanent Project 10 Emergency Affidavit • Summer 2019: ◦ New LiDAR ◦ Progression of erosion ◦ Continuing vulnerability of temporary repairs ◦ Need for additional temporary measures • Fall 2019 ◦ Emergency affidavit ◦ Expedited bid process 11 60% Design & Cost Estimate • 60% Design – Received Spring 2020 • Construction Cost Estimate — $25M ◦ Why? ◦ How? 12 Project Schedule Complete Design Bid Begin Construction Complete Construction 13 14 Trail Connectivity 15 Physical Modeling • Conditions are unique and challenging • High consequence of failure requires more certainty • Improve drop structure design • Determine stable channel configuration 16 Model Findings 9 Revise channel alignment 9 Maximize width 9 Structure modifications Do nothing? • Headcut will continue to move upstream. • High confidence of threats upstream • Increasingly expensive project Wickersham ‐ …

Oct. 21, 2020

Agenda — original pdf

Special Called Meeting of the Environmental Commission October 21, 2020 at 6:00 P.M. Environmental Commission to be held October 21, 2020 with Social Distancing Modifications. Public comment will be allowed via telephone; no in-person input will be allowed. All speakers must register in advance (day before the scheduled meeting, October 20, 2020 by noon). All public comment will occur at the beginning of the meeting. To speak remotely at the October 21, 2020 Environmental Commission Meeting, residents must: •Call or email the commission liaison at: Kaela Champlin (512) 974-3443 or Kaela.Champlin@austintexas.gov, no later than noon, (the day before the meeting). The information required is the speaker name, item number(s) they wish to speak on, whether they are for/against/neutral, and a telephone number or email address. •Once a request to speak has been called in or emailed to the board liaison, residents will receive either an email or phone call providing the telephone number to call on the day of the scheduled meeting. •Speakers must call in at least 15 minutes prior to meeting start in order to speak, late callers will not be accepted and will not be able to speak. •Speakers will be placed in a queue until their time to speak. •Handouts or other information may be emailed to Kaela.Champlin@austintexas.gov by noon the day before the scheduled meeting. This information will be provided to Board and Commission members in advance of the meeting. •Residents may watch the meeting here: http://www.austintexas.gov/page/watch-atxn-live 1 Reunión del Environmental Commission Fecha de la reunion (21 de octubre de 2020 a las 6:00 P.M.) La junta se llevará con modificaciones de distanciamiento social. Se permitirán comentarios públicos por teléfono; no se permitirá ninguna entrada en persona. Todos los oradores deben registrarse con anticipación (20 de octubre de 2020 antes del mediodía). Todos los comentarios públicos se producirán al comienzo de la reunión. Para hablar de forma remota en la reunión, los residentes deben: • Llame o envíe un correo electrónico al enlace de la junta en (512) 690-6729, Kaela.Champlin@gmail.com a más tardar al mediodía (el día antes de la reunión). La información requerida es el nombre del orador, los números de artículo sobre los que desean hablar, si están a favor / en contra / neutrales, y un número de teléfono o dirección de correo electrónico. • Una vez que se haya llamado o enviado por correo electrónico una solicitud para hablar al enlace …

Oct. 21, 2020

20201021-002a: Barton Springs Edwards Aquifer Conservation District Comments on Sawyer-Cleveland Wastewater Treatment Plant — original pdf

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Oct. 21, 2020

20201021-002a: City of Austin Comments on Sawyer-Cleveland Wastewater Treatment Plant — original pdf

Via Electronic Filing Founded by Congress, Republic of Texas, 1839 Watershed Protection Department P.O. Box 1088, Austin, Texas 78767 May 20, 2019 Ms. Bridget C. Bohac Office of the Chief Clerk (MC-105) Texas Commission on Environmental Quality (TCEQ) RE: City of Austin Comments on Application No. WQ0015594001 (Sawyer-Cleveland) Dear Ms. Bohac: I write to provide supplementary comments on the Sawyer-Cleveland Partnership application for a Texas Pollutant Discharge Elimination System Permit (No. WQ0015594001). The application requests approval for a discharge up to 92,000 gallons per day to the Long Branch Tributary of Barton Creek. The City of Austin hopes that TCEQ staff will consider and utilize these comments during the technical review of the proposed permit application. The City reserves the right to amend and supplement these comments. As it concerns this permit application, the City of Austin (“City”) is an affected party. The City requests, as an affected party, notice of subsequent correspondence, proceedings, draft permits, or contested case hearings on this permit. Barton Creek provides recharge to the Edwards Aquifer. Barton Creek currently exceeds fishable/swimmable quality. One of the City’s interests is to prevent degradation of the water quality of Barton Creek and the Barton Springs Segment of the Edwards Aquifer. The City holds a 1,675.7 acre conservation easement in the Barton Creek Watershed downstream of the proposed discharge location, purchased in 1999 using $5,864,950 in voter-approved bond funding. This property has been preserved in perpetuity to protect the integrity of Barton Creek and regional groundwater resources. Additionally, the City is a participant in the Texas Clean Rivers Program and provides water quality monitoring data from Barton Creek to the TCEQ. Attached please find water quality modeling performed by the City of the proposed discharge permit application. The City utilized a Water Quality Analysis Simulation Program (WASP) model to evaluate the water quality impacts of proposed discharge on the Long Branch Tributary to Barton Creek, including the detention ponds within the route of the proposed discharge in the Polo Club neighborhood northeast of the intersection of Polo Club Drive and Pemberton Way (Richter 2018). The WASP modeling predicts that total nitrogen and total phosphorus concentrations downstream of the detention ponds in the Long Branch Tributary will be similar to concentrations exiting the proposed wastewater treatment plant during the majority of the year, and phytoplankton chlorophyll concentrations will be hypereutrophic during algal blooms. a The City of Austin is committed …

Oct. 21, 2020

20201021-002a: Water quality impacts from a proposed wastewater discharge to Barton Creek presentation — original pdf

Water Quality Impacts from a Proposed Wastewater Discharge to Barton Creek ABEL PORRAS, PE ENVIRONMENTAL RESOURCE MANAGEMENT DIVISION WATERSHED PROTECTION DEPARTMENT OCT 21, 2020 The Proposed TPDES Permit  The Sawyer-Cleveland Partnership applied for a TPDES permit  The permit would allow treated wastewater effluent to be discharged to a tributary of Barton Creek in the Contributing Zone of the Barton Springs Segment of the Edwards Aquifer  Environmental Resource Management Division has modeled this discharge and assessed its impact on the water quality in Barton Creek. The Location of the Discharge The Location of the Discharge The Location of the Discharge The Proposed TPDES Permit  The Sawyer-Cleveland Partnership are proposing that their permit:  Would authorize a discharge of treated wastewater not to exceed a daily average flow of 92,000 gallons/day;  Estimated effluent concentrations of ~22mg/L of Nitrogen and ~4 mg/L of Phosphorus  Dripping Springs TPDES permit allowed discharge of treated wastewater not to exceed a daily average flow of 995,000 gallons/day  Estimated effluent concentrations of ~6mg/L of Nitrogen and ~0.5 mg/L of Phosphorus The Model  We’re interested mostly in the impact on the stream from algae due to N and P.  Algae changes the trophic status (or the clarity of the stream).  The water quality model looks at flow, light conditions, and nutrient cycling to assess the impacts from nitrogen and phosphorus into algae.  We used site-specific data for flow and light. Chlorophyll-a Concentration during Low Flow Conditions Long Branch Barton Creek 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Stream Length (mi) Chlorophyll-a Concentration during High Flow Conditions The Results Long Branch Barton Creek 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Stream Length (mi) 250 200 150 100 50 0 ) 2 m / g m ( 250 200 150 100 50 0 ) 2 m / g m ( n o i t a r t n e c n o C a - l l y h p o r l o h C n o i t a r t n e c n o C a - l l y h p o l r o h C Next Steps • We provided a letter of comments to TCEQ • TCEQ is working on a draft permit based on their own modeling …

Oct. 21, 2020

20201021-003a: Draft Environmental Commission Calendar — original pdf

2021 Environmental Commission Calendar January February March M 4 11 18 25 M 5 12 19 26 M 5 12 19 26 M 4 11 18 25 Tu 5 12 19 26 Tu 6 13 20 27 Tu 6 13 20 27 Tu 5 12 19 26 April W July W W 6 13 20 27 7 14 21 28 7 14 21 28 W 6 13 20 27 Th 7 14 21 28 Th 1 8 15 22 29 Th 1 8 15 22 29 Th 7 14 21 28 F 1 8 15 22 29 F 2 9 16 23 30 F 2 9 16 23 30 F 1 8 15 22 29 Sa 2 9 16 23 30 Sa 3 10 17 24 Sa 3 10 17 24 31 Sa 2 9 16 23 30 Su 3 10 17 24 31 Su 4 11 18 25 Su 4 11 18 25 Su 3 10 17 24 31 Su 7 14 21 28 Su 2 9 16 23 30 Su 1 8 15 22 29 Su 7 14 21 28 M 1 8 15 22 M 3 10 17 24 31 M 2 9 16 23 30 M 1 8 15 22 29 May W W 3 10 17 24 5 12 19 26 W 4 11 18 25 W 3 10 17 24 Th 4 11 18 25 Th 6 13 20 27 Th 5 12 19 26 Th 4 11 18 25 Tu 2 9 16 23 Tu 4 11 18 25 Tu 3 10 17 24 31 Tu 2 9 16 23 30 F 5 12 19 26 F 7 14 21 28 F 6 13 20 27 F 5 12 19 26 Sa 6 13 20 27 Sa 1 8 15 22 29 Sa 7 14 21 28 Sa 6 13 20 27 Su 7 14 21 28 Su 6 13 20 27 Su 5 12 19 26 Su 5 12 19 26 [42] [42] [42] [42] M 1 8 15 22 29 M 7 14 21 28 M 6 13 20 27 M 6 13 20 27 Tu 2 9 16 23 30 Tu 1 8 15 22 29 Tu 7 14 21 28 Tu 7 14 21 28 June W 3 10 17 24 31 W 2 9 16 23 30 W 1 8 15 22 29 W 1 8 15 22 …

Oct. 21, 2020

20201021-003b: AFD Response to Environmental Commission Wildland-Urban Interface Code Conditions — original pdf

WUI Code Environmental Commission Conditions AFD inclusion of Environmental Commission Conditions in Wildland-Urban Interface Code (WUIC): Of the 24 conditions on the Environmental Commission’s September 18, 2019 motion recommending support of the WUIC:  7 will be addressed through administrative rules,  4 were addressed by revising the draft code,  6 are clarified by AFD,  2 are part of existing processes,  1 is in existing regulations, and  4 would be part of AFD’s education and outreach campaign. Summary of AFD response to Environmental Commission conditions: 1 Admin rules 4 Existing process 7 Education and Outreach 10 Clarified by AFD 13 Education and Outreach 16 Clarified by AFD 19 Revised draft code 22 Revised draft code 2 Admin rules 5 Admin rules 8 Admin rules 11 Clarified by AFD 14 Admin rules 17 Clarified by AFD 20 Clarified by AFD 23 AFD program 3 Existing process 6 Existing regulations 9 Revised draft code 12 Admin rules 15 Revised draft code 18 Clarified by AFD 21 Admin rules 24 AFD program AFD responses (in red): 1. Within six months from Council approval of an ordinance, develop best management practices for the WUI Code that shall be added to the City’s technical manual through the rules process. Include the public in several working group meetings prior to the standard rules meeting. AFD has begun drafting rules and will include public where appropriate. Timing is contingent on City rules adoption schedule. Emergency rules are expected to be used on January 1, 2021 while permanent rules are adopted with the Development Services Department rules adoption schedule for Quarter 1. 2. Establish a proactive Firewise process where AFD assesses the fire risk on site for new construction or remodels, prior to doing any tree or vegetation work in defensible space. Do not allow tree or vegetation removal to create defensible space or creation of shaded fuel breaks without prior AFD Firewise assessment. AFD will consider this process during administrative rules development. Existing regulations for vegetation clearing and tree removal will apply. 3. Require hardening new or remodeled buildings and structures before removing trees or vegetation in the defensible space. AFD adopted this approach with support from stakeholders including the Environmental Commission. pg. 1 10/07/2020 WUI Code Environmental Commission Conditions 4. Staff shall proactively review site plans and proposed remodels to avoid removing or damaging trees to provide water or access for emergency …