Pyramid Geophysical Services

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Underground Storage Tank (UST) Investigations Using Geophysics

EM61 contour map for UST

Pyramid Geophysical Services has performed a multitude of Underground Storage Tank (UST) investigations throughout North Carolina using geophysical methods. These metallic USTs are often left behind at old fuel service stations that have closed down. Old home heating oil tanks are also often left in the ground after … [Read more...]

Filed Under: Case Studies Tagged With: EM, geophysics for UST, GPR, north carolina geophysics, Underground Storage Tank, UST

Seismic (MASW) Surveys to Investigate Top of Rock

MASW top of rock

One of the most common applications of near-surface seismic testing is to identify the depth of the top of a bedrock unit in the subsurface. The two most effective seismic methods associated with this application are: 1) Seismic refraction, and 2) Multi-Channel Analysis of Surface Waves (MASW). Most people who are … [Read more...]

Filed Under: Case Studies Tagged With: geophysics, MASW, north carolina geophysics, seismic, shear wave, top of rock

Geophysical Ground Conductivity Mapping

conductivity map of coal ash

The use of electromagnetic (EM) geophysical methods to evaluate ground conductivity variations is an effective tool to resolve environmental issues. However, the EM profiling instruments commonly used (such as the Geonics EM31 ground conductivity meter) for such applications provide depth-averaged conductivity values … [Read more...]

Filed Under: Case Studies Tagged With: coal ash, conductivity, earth conductivity, electrical resistivity, electromagnetics, EM31, fly ash, geophysics, north carolina geophysics, resistivity

Carlsbad Caverns – Resistivity Mapping for Caves

2D and 3D Cave Mapping with Resistivity

Pyramid Geophysical Services performed a geophysical investigation for the National Park Service at Carlsbad Caverns National Park in Carlsbad, NM. The survey used electrical resistivity mapping (ER) to look for potential underground caves or caverns near an area designated for the construction of an underground … [Read more...]

Filed Under: Case Studies Tagged With: electrical resistivity, karst geophysics, north carolina geophysics, void mapping

Electrical Resistivity

Advanced Geosciences, Inc. Supersting R8 earth resistivity meter

Pyramid utilizes Electrical Resistivity Tomography (ERT) as a surface geophysical tool to provide information to our clients regarding geologic site conditions, hydrogeologic characteristics, and conductivity variability associated with environmental concerns. We utilize the Advanced Geosciences, Inc. (AGI) Supersting … [Read more...]

Filed Under: Services Tagged With: Advanced Geosciences Supersting R8, Electrical Resistivity Tomography, ERT, MER, Mulit-Electrode Resistivity, north carolina geophysics, north carolina resistivity

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Certifications and Affiliations

GSA Contract

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AFFILIATED COMPANIES

LPT Systems

Provider of lubrication, pump and tank systems and equipment, sales and service

Pyramid Environmental Services

Pyramid Environmental is our Parent Company

© Pyramid Geophysical Services Inc., a subsidiary of Pyramid Environmental & Engineering, P.C.
503 Industrial Avenue, Greensboro, NC 27406

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