Association Of State Boards Of Geology ASBOG 1 Practice Exam

Ground-penetrating radar is commonly used in environmental site investigations to?

Locate buried drums. Determine soil pH. Measure groundwater salinity. Assess rock strength.

Correct Answer:

Locate buried drums.

Explanation:

Ground-penetrating radar relies on sending high-frequency radio waves into the ground and recording reflections from subsurface interfaces with different dielectric properties. Buried drums create a strong contrast with surrounding soil, producing a noticeable reflection that can be detected and mapped at shallow depths. In environmental site investigations, this makes GPR a quick, non-destructive way to locate potential sources of contamination like buried drums before intrusive digging or sampling. It’s not used to measure soil pH or groundwater salinity, which require chemical analyses, nor to assess rock strength, which needs mechanical testing; those tasks rely on different methods. So locating buried drums is the best fit for GPR in this context.

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