Karst Feature Evaluation & Documentation

Karst terrain is characterized by porous limestone that has dissolved over time producing empty pockets and channels. Construction in karst, with its extensive and dynamic network of caves, sink holes, and conduits poses two significant challenges: 1) potential impacts to groundwater/wildlife; and 2) identifying and designing for this unstable terrain.

Lochmueller Group (Lochgroup) has assisted the Indiana Department of Transportation with National Environmental Policy Act documentation related to karst features under several contracts. This involves completing multiple Categorical Exclusion documents that included an evaluation and description of karst features and determination of the impacts from roadway alignment and construction. Karst features have ranged from sinkholes to springs to caves. Lochgroup reviews geological, structural, and biological impacts through the combined efforts of our karst geologist, engineers, and environmental staff.

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