Review Plan Engineering and Design Products I-RAP-Mud Lake, MN

This review plan describes necessary quality reviews for engineering and design (E&D) products for the I-RAP-Mud Lake, MN project.  Project objectives include: (1) to improve connectivity for water and aquatic organisms to move between Mud Lake and the St. Louis River; (2) to provide overwintering habitat by deepening and opening the north end of Mud Lake; (3) to restore wetland habitat by creating hemi-marsh for birds; (4) to improve plant species establishment, re-establishing wild rice, and limiting invasive cattails; (5) to recreate historic bay mouth bars and islands reusing dredged material; and (6) to remediate contaminated sediments, as needed.  The project will include construction of a 10- to 30-foot opening under an existing railroad way. The opening design will consist of multiple, precast box culverts or a simple span precast concrete bridge founded on steel piles. Engineering tasks will include data collection, hydraulic modeling, and plans and specifications for dredging and the culvert or bridge. The construction contract will be awarded by others (USEPA or MNDNR).  The USACE is expected to be retained for construction oversight support.