2025
Comparably’s Best Company Outlook
* Providing engineering services in these locations through SWCA Environmental Consulting & Engineering, Inc., an affiliate of SWCA.
From the experts we hire, to the clients we partner with, our greatest opportunity for success lies in our ability to bring the best team together for every project.
That’s why:
At SWCA, sustainability means balancing humanity’s social, economic, and environmental needs to provide a healthy planet for future generations.
SWCA employs smart, talented, problem-solvers dedicated to our purpose of preserving natural and cultural resources for tomorrow while enabling projects that benefit people today.
At SWCA, you’re not just an employee. You’re an owner. Everyone you work with has a stake in your success, so your hard work pays off – for the clients, for the company, and for your retirement goals.
Southwest Bypass – Segment I – Natural and Cultural Resources Studies
SWCA performed a range of due diligence activities as part of the Southwest Bypass – Segment I project.
For questions or further information, please fill out the form below.
SWCA performed a range of due diligence activities as part of the Southwest Bypass – Segment I project. Tasks included a geologic assessment, karst survey, jurisdictional waters delineation, Regional Habitat Conservation Plan (RHCP) preparation, and cultural resources surveys and reporting. SWCA encountered and excavated five caves during the geologic assessment. Full presence-absence surveys occurred in the caves, and the Bone Cave harvestman was located within one of them. Additionally, part of the proposed roadway traversed a portion of Inner Space Caverns. Therefore, SWCA assisted the County with enrolling two species caves into the RHCP.
Stephen is a project manager with experience in karst biology, geology, hydrogeology, and endangered species issues. He currently performs various geologic and karst assessments, cave mapping, and cave biota collection surveys and has performed geologic assessments required by the Texas Commission on Environmental Quality for compliance with Edwards Aquifer Protection regulations for transportation and land development projects in Williamson, Travis, and Hays Counties. He also conducts field monitoring within cave preserves in accordance with U.S. Fish and Wildlife Service (USFWS) designated karst management and maintenance plans. He has performed field data collection for karst terrain feature surveys and also prepares annual activities reports for karst preserves as part of USFWS mandated monitoring efforts.
Stephen has authored several white papers regarding potential threats to karst invertebrates in Williamson County, including several that were utilized by the USFWS when preparing the 2018 Species Status Assessment for the Bone Cave harvestman (Texella reyesi). He was a co-author on a 2016 peer reviewed publication regarding cave crickets (Ceuthophilus secretus) and was lead author on a 2019 peer reviewed publication detailing a suggested recovery unit amendment for the endangered Inner Space Caverns mold beetle (Batrisodes texanus).