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Subsurface Investigations Unit
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Geotechnical Section
The Subsurface Investigation Unit (SIU) is responsible for administering district wide open-end contracts for subsurface investigations. The SIU is a liaison between MassDOT MassDOT and its contracted drilling companies. Additional duties include archiving both digital and paper boring logs and soil and bedrock samples. The SIU also utilizes a drilling rig throughout the state to conduct borings required for geotechnical site characterizations.
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