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Our Blog

Our Enviroprobe blog about geophysics, marine geophysics, drilling, and geoprobing.

Seismic refraction survey to delineate bedrock topography
Apr 13, 2016 / By: Shan Wei / 0 Comments

Seismic refraction survey to delineate bedrock topography

As part of a project for tracking down overflowed oil, Enviroprobe conducted a geophysical survey to delineate the bedrock topography around a tank field. The seismic refraction is the primary investigation method and an EM31 survey was also conducted as a quick complementary method.

Ground penetrating radar investigation to delineate former UST excavation area
Feb 18, 2016 / By: Shan Wei / 0 Comments

Ground penetrating radar investigation to delineate former UST excavation area

Enviroprobe performed a ground penetrating radar investigation and delineated a former UST excavation area. The results were provided in real time and it’s immediately followed by drilling which was also performed by Enviroprobe.

Electrical resistivity imaging in Bermuda
Feb 17, 2016 / By: Shan Wei / 0 Comments

Electrical resistivity imaging in Bermuda

In 2015, Enviroprobe conducted an electrical resistivity imaging (ERI) survey to locate underground caves in Bermuda. Along with the beauty and myth of Bermuda came one of the most difficult surveys. The majority of the survey areas were in jungles with tough terrains. Paths had to be cleared for the survey lines and they were kept narrow to minimize the impact to vegetation.

Marine ERI for sub-bottom layer thickness estimation
Feb 16, 2016 / By: Shan Wei / 0 Comments

Marine ERI for sub-bottom layer thickness estimation

In the Fall of 2015, a geophysical survey crew from Enviroprobe Service Inc. was mobilized to Upstate New York to perform a geophysical investigation using the marine electrical resistivity imaging (ERI) method. The purpose of the investigation was to investigate the sub-bottom materials in a river, specifically the thickness of the soft layer at the river bottom underlying by hard glacial till or bedrock. This soft layer was mostly clay or silt. The target survey area was about 5 miles long.

Find the casing bottom of a well
Feb 01, 2016 / By: Shan Wei / 0 Comments

Find the casing bottom of a well

Although a video camera can usually be sufficiently enough to find the bottom of the casing for a well, sometimes the video camera doesn't work due to corrosion and deposits on the walls of the hole. In such cases, geophysical logging tools such as the caliper could be very useful.

3D resistivity survey for sinkhole/underground void locating
Jan 27, 2016 / By: Shan Wei / 0 Comments

3D resistivity survey for sinkhole/underground void locating

Due to complexity and often 3D natures of subsurface conditions, 2-dimensional direct current electrical resistivity surveys (resistivity profiling) often can not provide the best results and the data interpretation is difficult. In the other hand, a 3D resistivity survey provides a much better prospective and the results more accurately reflect the subsurface conditions.

Watch out the ends of fiberglass USTs for drilling
Mar 02, 2015 / By: Shan Wei / 0 Comments

Watch out the ends of fiberglass USTs for drilling

It's a very common practice for environmental consultants to get soil samples around underground storage tanks (USTs). The selection of drilling locations depends on a lot of factors and sometimes it's preferable that they are located as close as possible to USTs without risking damaging them. Ground penetrating radar (GPR) is a great tool to use to delineate UST scopes due to its very high lateral resolutions.

3rd Annual Southwest Florida Brownfield Symposium
Feb 18, 2015 / By: Shan Wei / 0 Comments

3rd Annual Southwest Florida Brownfield Symposium

We are proud to announce that Enviroprobe Service, Inc. will be a sponsor of 3rd Annual Southwest Florida Brownfield Symposium. As a company providing drilling and geophysical services for 20 years, being a sponsor of the symposium is our continuing effect to support environmental communities.

GPR scanning for concrete footing
Feb 15, 2015 / By: Shan Wei / 0 Comments

GPR scanning for concrete footing

Ground penetrating radar (GPR) has many applications. One of its applications in engineering is to delineate lateral extents of footings for bridges, buildings or other structures. Design and as-built plans are not always available when needed and a GPR survey could provide valuable information about the footings in a non-destructive and efficient way.

 
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