Pyramid Geophysical Services

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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

Underground Storage Tanks

Underground Storage Tank Removal

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 interpretation of the location of such materials. … [Read more...]

Filed Under: Applications Tagged With: buried waste, EM, geophysics, GPR, north carolina geophysics, Underground Storage Tank

Water Resources

Groundwater Quality Assessment and Remediation

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...]

Filed Under: Applications Tagged With: environmental geophysics, geophysics, groundwater geophysics, hydrogeology, north carolina geophysics, water resources

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

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503 Industrial Avenue, Greensboro, NC 27406

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