Join RMAEP Utah at Barr Engineering on Monday, April 20, 2026 from 11:30 am - 1:00 pm for a lunch and learn with Aestus on high-resolution site imaging!

Samantha Frandsen, a Hydrogeophysicist and Project Manager, will be discussing how electrical hydrogeology makes it possible to see how contamination is distributed and moving underground. She will cover how Aestus’ high-resolution imaging can map pollutants and uncover hidden pathways that wells alone may miss by visualizing contaminant plumes in 2D and 3D, map subsurface geology and structural features controlling contaminant migration, precisely target remediation to reduce wasted effort, track contaminant migration to confirm where remediation is effective, and shorten project timelines and lower overall cost. Typical applications include, but are not limited to, LNAPL, DNAPL, PFAS, metals, salt/brine leaks, and spills at gas stations, dry cleaners, refineries, pipeline facilities, industrial plants, and others. 

About Aestus:

For decades, consultants and regulators have worked with subsurface imaging tools that were limited by resolution, sensitivity, or real-world conditions. Aestus set out to change that. Working with researchers at Oklahoma State University, Aestus re-engineered electrical resistivity imaging (ERI) into GeoTrax Survey™, a proprietary system designed to deliver sharper images, higher image sensitivity (accuracy), and more meaningful results in the places where conventional ERI/ERT and other geophysical survey and drilling tools fall short.

Aestus’ GeoTrax Survey™ uses electrical signals to map the movement of groundwater and detect what’s below the surface. By measuring how easily electricity moves through soil and rock, Aestus can identify aquifers, contamination, and subsurface structures.

About the Speaker

Samantha Frandsen, M.Sc, P.Gp.
Hydrogeophysicist / Project Manager

Since joining Aestus in 2018, Samantha has performed all aspects of the Aestus project lifecycle, including acquisition field work, processing of geophysical data, data integration, 3D visualization, and reporting. As project manager, she oversees a variety of projects completed at complex sites across the United States and strives to help our clients efficiently leverage Aestus’ high-resolution GeoTrax Survey™ data to improve understanding of subsurface conditions.

Prior to her time with Aestus, she earned her Bachelor’s degree (magna cum laude) in Physics from the University of Richmond and taught high school physics as a Teach for America corps member. She then completed her Master’s degree (Distinction) in Exploration Geophysics at the University of Leeds in the UK. For her thesis, she utilized several different geophysical techniques to characterize the subsurface remains of a former gasworks facility for which she was awarded the GETECH award for best overall performance in the Independent Project and the Association for Industrial Archaeology’s Dissertation Award.

When she’s not investigating what’s below the ground, Samantha enjoys exploring all the above-ground fun her Stateline (South Lake Tahoe), NV home has to offer via trail running, mountain biking, and snowboarding.

Lunch will be served at this event. Please contact [email protected] by EOD on 4/16 with any dietary restrictions.