Derry, NH | Fords, NJ

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Archeological Investigations

Borehole Geophysical Logging

Borehole Seismic

Electrical Resistivity Imaging

Electromagnetic Induction

Ground Penetrating Radar

Precision Utility Locating (PUL)

Surface Seismic

Vibration Monitoring

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USGS Water Resources of NH and VT

2025-07-30

HRGS is a leading geophysical consulting firm providing expert subsurface investigations for engineering, environmental, and archaeological projects worldwide.

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Borehole Seismic

Electrical Resistivity

Electromagnetic Induction

Ground Penetrating Radar (GPR)

Surface Seismic

Borehole Geophysical Logging

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26 Kendall Pond Road, Derry, NH 03038
846 Main Street, Fords, NJ 08863

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