Commenting open: July 07, 2025 12:00AM CT - July 21, 2025 11:59PM CT.
Winona County (I-90 Culvert Work) - 401 Water Quality Certification
We invite you to comment on the draft 401 Water Quality Certification for MnDOT’s I-90 Culvert Work.
The Minnesota Department of Transportation proposes to conduct maintenance activities on I-90 in Winona County near the town of Dakota.
Part of the maintenance includes work on two culverts that outlet into tributaries of Dakota Creek, both of which are class 2A streams. The applicant proposes to place 63 cubic yards of permanent fill of rip rap at one outlet (to stream ID 07040006-562) in a 1,590 square foot area to repair a scour hole and stabilize soils. The applicant proposes 720 square feet of temporary excavation impacts at the other outlet (to stream ID 07040006-563) to salvage and reinstall the end section and to reattach the apron that has shifted over time. No mitigation is proposed.
The 401 Individual Water Quality Certification is part of the Federal 404 Clean Water Act (CWA) authorization process managed by the U.S. Army Corps of Engineers (USACE). The USACE cannot proceed with this project until MPCA finalizes its Individual Water Quality Request decision.
A 401 Water Quality Certification is required when an individual, business, or property owner proposes construction-related activities near a navigable lake, river, stream, or adjacent wetland. The MPCA reviews projects to ensure they will not violate Minnesota's more protective water quality standards. The 401 certification becomes an enforceable component of the associated federal license or permits issued under the Clean Water Act.
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We invite you to comment on the draft 401 Water Quality Certification for MnDOT’s I-90 Culvert Work.
The Minnesota Department of Transportation proposes to conduct maintenance activities on I-90 in Winona County near the town of Dakota.
Part of the maintenance includes work on two culverts that outlet into tributaries of Dakota Creek, both of which are class 2A streams. The applicant proposes to place 63 cubic yards of permanent fill of rip rap at one outlet (to stream ID 07040006-562) in a 1,590 square foot area to repair a scour hole and stabilize soils. The applicant proposes 720 square feet of temporary excavation impacts at the other outlet (to stream ID 07040006-563) to salvage and reinstall the end section and to reattach the apron that has shifted over time. No mitigation is proposed.
The 401 Individual Water Quality Certification is part of the Federal 404 Clean Water Act (CWA) authorization process managed by the U.S. Army Corps of Engineers (USACE). The USACE cannot proceed with this project until MPCA finalizes its Individual Water Quality Request decision.
A 401 Water Quality Certification is required when an individual, business, or property owner proposes construction-related activities near a navigable lake, river, stream, or adjacent wetland. The MPCA reviews projects to ensure they will not violate Minnesota's more protective water quality standards. The 401 certification becomes an enforceable component of the associated federal license or permits issued under the Clean Water Act.
Contact Information
*Indicates Required Fields