Understanding subsurface conditions is fundamental to designing infrastructure that performs safely, efficiently, and predictably over its full lifecycle. We provide comprehensive subsurface investigations that evaluate soil and rock conditions, groundwater conditions, characterize geologic hazards, and identify constraints that may influence design, construction methods, construction costs, or long-term performance. Each investigation is tailored to subsurface conditions—considering site history, regulatory requirements, and planned land use to deliver data that is both technically rigorous and directly applicable to design decisions.