March 17, 2023

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Brandon Klenzendorf, Kelsey Krueger, and Olivia Bramlet to Present at the Texas Regional Stormwater Conference

Brandon Klenzendorf, PhD, PE, CPESC, Kelsey Krueger, PG, CPESC, and Olivia Bramlet, PE (Texas), will present at the Texas Regional Stormwater Conference at the Civic Center in New Braunfels, Texas, on March 28, 2023. The event is hosted by the Central Texas Stormwater Coalition.

Brandon will present "Pease Park Water Quality Retrofit Design and Construction" at 9:30 a.m., Kelsey will present Renewal of the Construction General Permit (CGP) TXR150000" at 10:15 a.m., and Olivia will present "Urban Geologic Karst Feature Water Quality Evaluation and Mitigation" at 3:00 p.m. (all times CDT).

Brandon is a Principal Engineer who focuses on water resources including modeling and design of green infrastructure and stormwater management facilities to treat and infiltrate stormwater runoff for both water quality and flood mitigation purposes. His experience lies in conceptual design, planning, modeling, and quantifying the benefits of green infrastructure, particularly for retrofit situations.

Kelsey is a Project Geologist who focuses on construction and industrial stormwater permitting, stormwater best management practices, site inspections, environmental planning and permitting, site assessment and remediation, multimedia environmental compliance, and due diligence. She has managed and consulted on municipal stormwater programs in government and consulting positions.

Olivia is a Senior Staff Engineer who has worked as a water resource engineer on a variety of projects. Her specialties include watershed and stormwater management, stream restoration, environmental compliance and permitting, water quality and green infrastructure design, and remedial analysis and design.

The Texas Regional Stormwater Conference trains attendees on proper stormwater management for construction and municipal operations, stormwater system maintenance, and other stormwater/MS4 topics.

The Central Texas Stormwater Coalition consists of MS4 program managers from the Central Texas cities of San Marcos and New Braunfels, as well as Texas State University. This collaborative group was formed with the intent to combine efforts, share experiences, and provide support in an effort to improve each entity's MS4 program and meet program goals for compliance with state and federal regulations.

Abstracts

Pease Park Water Quality Retrofit Design and Construction

Pease Park is a popular urban park near downtown Austin and the University of Texas. In 2014, the City of Austin approved the Pease Park Master Plan, which looks at the park, Shoal Creek, and the adjacent Lamar Boulevard as an integrated system that moves water, cars, bicycles, people, and wildlife through the creek valley. In accordance with the spirit of the master plan, the City constructed a stream restoration project along Shoal Creek, which passes through Pease Park. Geosyntec served as a subconsultant on the stream restoration project team and has designed five water quality retrofit facilities near Pease Park using vegetated swales, biofiltration, and rain gardens. Several stakeholder meetings were held during design to get input from the neighborhoods and user groups associated with the park; these meetings resulted in design modifications to accommodate existing park uses by employing low-profile and low-tech water quality control measures. This presentation will briefly discuss specifics of the water quality retrofit facilities designs and initial challenges encountered during the construction phase of the project.

Renewal of the Construction General Permit (CGP) TXR150000

The Texas Commission on Environmental Quality is in the process of renewing the TPDES Construction General Permit (CGP), TXR150000, which expired on March 5, 2023. The amended permit includes modified definitions, clarifications, and additions that will affect the way you, your contractors, and developers within your municipality apply for permit coverage. This presentation will introduce the changes within the renewed permit along with the ways in which they will affect day-to-day construction projects within your MS4. Learn how to hold permittees accountable while inspecting project sites and how to hold yourself accountable for complying with the updated rules and regulations. Presentation attendees will gain a better understanding of implementation and interpretation of the TXR150000 permit.

Urban Geologic Karst Feature Water Quality Evaluation and Mitigation Beneath the surface of the Edwards Aquifer Recharge Zone there are caves, sinkholes, and conduits. Stormwater runoff can enter the aquifer via infiltration through these karst features. A sinkhole is a depression or hole caused by dissolution of limestone rock. Many karst sinkholes in the Edwards Aquifer Recharge Zone receive untreated stormwater runoff from urbanized and developed areas which can contribute to declining water quality. These geologic features are direct conduits to the Edwards Aquifer, and untreated runoff can impact water quality within the aquifer. The City of Austin selected Geosyntec Consultants to evaluate eight sinkholes that have received untreated runoff and develop preliminary water quality mitigation strategies to effectively reduce pollutant discharges to the Edwards Aquifer. The presentation will summarize how the karst geologic features were prioritized for evaluation and the most appropriate stormwater controls and best management practices identified and selected to mitigate potential water quality degradation.

More Information

About the event: Texas Regional Stormwater Conference (txphase2ms4.com)
About The Central Texas Stormwater Coalition: Central Texas Stormwater Coalition (txphase2ms4.com)
For consultation regarding stormwater, contact Brandon at This email address is being protected from spambots. You need JavaScript enabled to view it.
Learn more about Brandon: Brandon Klenzendorf | LinkedIn
Learn more about Kelsey: Kelsey Krueger | LinkedIn
Learn more about Olivia: Olivia Bramlet | LinkedIn