This bill modifies provisions related to calcareous fens in Minnesota. It introduces new requirements for defining and managing these unique wetlands.

Key provisions of the bill:

1. Modification of Existing Law (Section 103G.223):

   • Calcareous fens, which are sensitive wetland ecosystems, cannot be filled, drained, or degraded unless approved through a management plan by the commissioner.
   • Allows temporary seasonal groundwater reductions under a calcareous fen management plan.
   • Prohibits the commissioner from denying a permit or action affecting a calcareous fen without first providing the applicant with a detailed report describing the fen, its ecological benefits, and the potential adverse effects of the proposed activity.

2. Rulemaking Requirement:

   • The commissioner of natural resources must establish an official definition of a calcareous fen through rulemaking.

3. Reporting Requirement:

   • By December 1, 2025, the commissioner must submit a report to the legislature on calcareous fens. This report must include:
     • A proposed definition of a calcareous fen with scientific rationale.
     • A scientific explanation of the ecological benefits of calcareous fens compared to other wetlands.
     • A summary of permit denials related to calcareous fens over the past ten years.

The bill aims to clarify and regulate protections for calcareous fens while ensuring transparency in decision-making.