Who We Are

About Us

Carolinas Geotechnical Group, PLLC specializes in providing owners and designers with quality geotechnical engineering for roadway, pavement, and structure designs. Our expertise spans designing and investigating foundations for buildings, bridges, roadways, retaining walls, pavements, utilities, and project slopes for a multitude of transportation projects in North Carolina. We effectively execute subsurface investigation efforts that maximize efficiency and minimize cost for our clients. Our team has an exceptional performance history of delivering quality products to NCDOT, private owners, municipalities, and other state DOTs. We also provide in-house subsurface investigation capabilities suited for overcoming varying terrain and site access obstacles.
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Carolinas Geotechnical Group, PLLC is properly registered with the North Carolina Office of the Secretary of State and the North Carolina Board of Examiners for Engineers and Surveyors. Our subconsultants are also appropriately registered in North Carolina. In addition, all of our Engineers and Geologists in charge of project work are registered in the State of North Carolina and are in good ethical and professional standing.

Our Team

Rob Kral, PE

Senior Project Manager

A professional engineer with vast transportation industry experience, Rob is responsible for managing Carolinas Geotechnical Group, PLLC’s Transportation program and serves as our Corporate Safety Officer. A managing member of Carolinas Geotechnical Group, PLLC, Rob plays a key role in Carolinas Geotechnical Group, PLLC and works intensively in project management, geotechnical design, marketing, business operations, and equipment operations. He brings over a decade of experience to these roles and is responsible for proposal preparation, field exploration and evaluation oversight, field and lab data reviews, and the preparation of NCDOT inventory and recommendation reports.

Rob’s extensive engineering experience spans shallow and deep foundation analysis, bearing capacity and settlement calculations, slope stability analysis, retaining wall and pavement design, including dam inspections. He holds a BS and MS degree in Civil Engineering from the University of North Carolina at Charlotte. He also holds an Airman Certificate as an FAA Remote Pilot with a Small UAS Rating and has an NC Commercial UAS operator permit, in addition to other driving, well-drilling, and engineering certificates. He is licensed in North Carolina, South Carolina, Tennessee, Virginia, and West Virginia.

Rob’s favorite thing about working in Carolinas Geotechnical Group, PLLC is the freedom of not being restricted by a corporate environment, and the ability to explore exciting ideas and technologies. He also derives great joy from helping his staff achieve their professional goals.

Matt Brewer, PE

Senior Project Manager

Matt is a professional engineer who brings over a decade of experience managing an array of geotechnical and transportation engineering projects to Carolinas Geotechnical Group, PLLC. He is a managing member of Carolinas Geotechnical Group, PLLC and works extensively in project management, geotechnical design, investigation operations, business operations, equipment operations, and marketing. He is also responsible for client development, design-build pursuits, proposal preparation, and oversight of field exploration and evaluations.

Matt provides engineering analysis following the NCDOT Pavement Design Procedure AASHTO 1993 Method and has engineering analysis experience using the LFRD and ASD Design Methodologies. He holds a BS in Civil Engineering from North Carolina State University, is licensed in North and South Carolina, and has acquired several special certifications for well driller and engineering.

Matt’s favorite thing about working for the Carolinas Geotechnical Group, PLLC is that he gets to work with such an incredible team. Though this company is classified as a small business, the team has proven time and time again, through their work ethic, flexibility, and resilience that they can do big things.

Tyler Wenner, PG

Geologist & Project Manager

With a decade of industry experience, Tyler serves Carolinas Geotechnical Group, PLLC as a geologist and project manager. In these roles he is responsible for the pursuit of projects, proposal preparation, overseeing field services/evaluations, review of field and laboratory data, and preparation of geotechnical reports. Additionally, Tyler manages small to large-scale commercial construction materials testing, special inspection projects, and geotechnical subsurface explorations for residential, commercial, industrial, municipal, infrastructure, and NCDOT/ SCDOT projects. He also serves as a mentor to junior colleagues across the organization. Tyler graduated Cum Laude from Bloomsburg University with a BS in Geoscience. Tyler enjoys the tight knit group of colleagues at Carolinas Geotechnical Group, PLLC and the opportunity to work on a variety of interesting and challenging projects.

Patrick Tomasic, GIT

Staff Geologist

As a staff geologist with Carolinas Geotechnical Group, PLLC, Patrick is responsible for geotechnical and transportation projects including roadways, retaining walls, bridges, pavement design, and signal pole investigations. He also frequently assists the project manager and/or senior engineer with proposal preparations, submitting utility locate requests, performing site layouts, directing and overseeing contractor activities, and many other key initiatives. Patrick has both a BS in Geology and a certificate in Hydrogeology and Environmental Geology from East Carolina University. He is also currently pursuing a Masters in Geology from East Carolina. One of his favorite things about working at Carolinas Geotechnical Group, PLLC is the relationships with his colleagues and getting to experience various geology around the state.

Michael Walko, PE

Principal Engineer

Michael brings over thirty years of experience to his role as principal engineer for Carolinas Geotechnical Group, PLLC. He earned his BS in Civil Engineering at The Pennsylvania State University and is a distinguished expert in his field. He is responsible for providing project management and engineering services to Carolinas Geotechnical Group, PLLC’s transportation clients. Michael has also provided bridge foundation design recommendations for design-build projects throughout North Carolina. He also has strong geotechnical experience in the Coastal Plain, Piedmont, and Mountain areas of North Carolina.

In addition to acting as a principal engineer, he also is a licensed professional engineer in North Carolina, South Carolina, Georgia, and Tennessee, and will be assisting the Carolinas Geotechnical Group, PLLC team with projects throughout the region.

Kelly de Montbrun, PE

Senior Project Engineer

Kelly is a senior project engineer for Carolinas Geotechnical Group, PLLC with twelve years of experience on numerous geotechnical and transportation projects. She provides exemplary project management and engineering services to Carolinas Geotechnical Group, PLLC’s industrial, energy, commercial, and transportation clients. Among her many responsibilities are pursuit and proposal preparation, oversight for field explorations and evaluations, review of field and laboratory data, and preparation of geotechnical reports.

Kelly is also experienced in engineering analysis utilizing LRFD and ASD design methodologies to develop geotechnical recommendations. She obtained her BS in Civil Engineering from the University of South Carolina. Kelly is a licensed professional engineer in North and South Carolina.

Pressley Perry, EIT

Staff Professional

From boring layout to high-strain dynamic testing data reduction, Pressley is involved in all aspects of Carolinas Geotechnical Group, PLLC projects. She completed her MS in Geotechnical Engineering in the Fall of 2023 from the University of South Carolina, where she also completed her BS in Civil Engineering. Pressley has achieved her Engineer-in-Training (EIT) certification. In addition to her love for working outside and learning about different subsurface investigation technologies, Pressley enjoys getting to know her Carolinas Geotechnical Group, PLLC colleagues.

Mackenzie Malisher, EIT

Staff Professional
Mackenzie is a staff professional for Carolinas Geotechnical Group, PLLC whose responsibilities include assisting with fieldwork, report writing, and project planning. According to Mackenzie, her favorite aspect of working for Carolinas Geotechnical Group, PLLC is the variety of projects the firm undertakes. Each new endeavor provides exciting learning opportunities that help her grow personally and professionally. Mackenzie’s background brings a unique and valuable perspective to the team. In December 2022, she obtained a Master’s in Geotechnical Engineering degree from the University of North Carolina in Charlotte, where she also obtained a Bachelor’s in Civil Engineering in May 2021. In addition, Mackenzie has an Engineer-in-Training (EIT) certification.

Ryan Welch

Staff Geologist
Ryan Welch’s journey at Carolina’s Geotechnical Group, PLLC began when he interned with the company during the summer of 2023. The experience he gained during that time led him to join the team in May 2024 as a staff geologist. Ryan holds a bachelor’s degree in geology from Western Carolina University, and he specializes in identifying soil and rock and borehole logging behind geotechnical drill rigs and creating reports for our clients. He sincerely appreciates being around his coworkers, whose kindness and willingness to teach him new skills have been a highlight of his career thus far.
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