Pyramid Environmental 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...]
Carlsbad Caverns – Resistivity Mapping for Caves
Pyramid Environmental recently 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...]
Electrical Resistivity
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...]
Water Resources
Geophysical assessments of groundwater quality/behavior and water resources Geophysical methods such as electrical resistivity measure conductivity changes that are directly linked to groundwater characteristics. These methods can be used to examine the depth of the water table, identify the fresh/salt water … [Read more...]
Underground Storage Tanks
Locating underground storage tanks, drums, metallic objects Geophysical tools have been used for years to locate unknown buried tanks, drums, and other objects, or properly delineate the depth and size of objects at known locations. A combination of at least two geophysical methods typically provides the most accurate … [Read more...]
