Fundamentally different factors (FDF) variance: MR 7049.0485
Minnesota water quality standards: Minnesota Rules (MR) 7000.7000, MR 7050.0190, and MR 7053.0195
Minnesota Pollution Control Agency (MPCA)
U.S. Environmental Protection Agency (EPA) Region 5
• Rules. Minnesota has adopted the federal rules for wastewater and fundamentally different factors (FDF) variances, with specific provisions for variance application, amendment, modification, and suspension, in addition to the U.S. Environmental Protection Agency (EPA) requirements. For additional guidance, see the national section WASTEWATER VARIANCES.
• Administration and enforcement. The Minnesota Pollution Control Agency (MPCA) administers and enforces wastewater variance rules for both large and small facilities in Minnesota.
MR 7000.7000, MR 7050.0190, MR 7053.0195
The MPCA, at its discretion, may grant a variance of the state effluent standards. A "variance" is a temporary change in a state water standard for a specified pollutant. To obtain a variance, a discharger is required to demonstrate to the MPCA that the permittee has met the following conditions:
To obtain a variance, a discharger must submit a written application for a variance to the MPCA.
The written application must contain: