Plan requirements.
Minneapolis Code of Ordinances § 54.80
in effect54.80. - Plan requirements.
(a) On-site management. Measures to achieve stormwater management standards shall be incorporated on all sites. Where it has been evaluated and approved by the city engineer using the stormwater banking approach outlined in the Guide, entities may create regional stormwater BMPs that exceed stormwater management standards and bank them for use.
(b) Full or partial off-site management. When incorporating stormwater management standards on site becomes impossible due to development density, topographic features, site constraints, or soil or vegetation conditions, the responsible party may apply for approval of full or partial participation in a regional stormwater BMP. The Guide shall provide the method for calculating and documenting stormwater credits or cost of full or partial off-site management in lieu of full on-site management through a stormwater banking program. The city will provide standards for administration of a stormwater banking program for approved governmental entities. Off-site management shall not circumvent the general purposes and intent of this ordinance.
(c) Plan design standards.
(1) Water quality standards according to receiving waterbody. Water quality discharge standards, as contained in the Guide, shall apply.
(2) Peak discharge rate control. Peak discharge rates shall be maintained at or below the existing condition rates for the disturbed land area.
(3) Volume control. Volume control shall be addressed as follows:
a. New development, redevelopment, and nonlinear projects on sites without restrictions shall capture and retain on-site one and one-tenth (1.1) inches of runoff from the new and fully reconstructed impervious surfaces within the disturbed area.
b. Linear projects on sites without restrictions shall capture and retain the larger of the following:
1. Fifty-five hundredth (0.55) inch of runoff from the new and fully reconstructed impervious surfaces within the disturbed land area.
2. One and one-tenth (1.1) inches of runoff from the net increase in impervious area.
3. Stormwater infiltration practices may be restricted or prohibited in areas defined in the Guide and the city's current MPCA NPDES/SDS Municipal Separate Storm Sewer Systems (MS4) permit.
(4) Operations and maintenance (O&M) Plan. The Plan shall include an O&M Plan that defines the maintenance regimen, including the type and interval of inspection and maintenance, and party responsible for conducting such inspection and maintenance.
(5) Accessibility for maintenance. All BMPs shall be accessible for maintenance and inspection.
(6) Impacts on other properties. No Plan shall cause unreasonable damage or unreasonable environmental, health, or safety conditions on adjacent properties.
(7) Conformity with other requirements. Plans must conform to all applicable federal, state, city, and water management organization requirements, ordinances, and regulations.
(8) Conditions of approval. In granting approval pursuant to Chapter 54, the city engineer may impose such conditions as may be reasonably necessary to prevent creation of a nuisance or unreasonable hazard to persons or to a public or private property.
(9) Changes to plans. Any modifications to an approved Plan must be submitted to the city engineer for review and approval. Modifications to any aspect of an approved Plan that are not approved by the city engineer shall be considered noncompliant with this chapter.
(Ord. No. 2021-013, § 1, 3-12-21)
Source: City of Minneapolis, Minnesota, Code of Ordinances, City Charter and Park and Recreation Board Code of Ordinances (Municode Library, library.municode.com)URL: https://library.municode.com/mn/minneapolis/codes/code_of_ordinances?nodeId=COOR_TIT3AIPOENPR_CH54STMA_54.80PLREFetched: 11/2/2026