These are a reasonable cost saving option for preliminary assessment of large sites. They give information on sub-soil parameters like, resistivity, seismicity, ground profiles & water levels.

Resistivity Meter Test

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Preparation for submerging the hydrophones with water

Preparation for submerging the hydrophones with water

Inserting Hydrophones for the downhole seismic test

Inserting hydrophones for the downhole seismic test

MASW Downhole test

MASW and downhole test