Stormwater Management Program Review

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Pattee Creek flows into this detention pond. Sediment settles out of the water here, and the vegetation cleans harmful nutrients from the water before it travels to

Description

The mission of the City's Stormwater Division is to protect public health and safety, natural resources, waterways, and our aquifer, while meeting or exceeding state and federal environmental quality regulations. The Division developed a Stormwater Management Program (SWMP) not only to comply with the state Municipal Separate Storm Sewer System (MS4) permit but also as a tool for achieving its mission. As a condition of the permit, the Division must solicit feedback on the SWMP from community stakeholders and the general public. A link to the the Stormwater Division's SWMP document is provided below.

Please review the document and then ask us questions and/or provide suggestions for future revisions using the Comments & Questions tab at the bottom of this page.

UPDATE—The SWMP update for 2022 includes a City-wide standard operating procedures for preventing pollution plan, which also applies to all City-owned facilities. This is the first time the City has had such a plan. Please use the link below to access the SWMP and then use the Comments & Questions tab at the bottom of the page to let us know what you think about the plan.

Stormwater Management Program - February 2022 (pdf)



Background

Nonpoint source pollution, like stormwater runoff, is a significant problem in Montana and the single largest cause of impaired waters statewide according to the Montana Department of Natural Resources and Conservation. The City of Missoula's Stormwater Utility manages the quantity, quality, and routing of stormwater runoff through our community. The effectiveness and efficiency of stormwater management have a direct impact on public health and safety, surface water quality, wildlife habitat, and future development.

Consequently, the federal government amended the Clean Water Act of 1972 in 1987 to regulate the management of stormwater runoff from municipalities and specific industrial classifications. Federal and state regulations require designated municipalities obtain and maintain coverage under the Montana Pollutant Discharge Elimination System General Permit for Storm Water Discharges Associated with Small Municipal Separate Storm Sewer Systems (MS4 Permit), which is administered by the Montana Department of Environmental Quality under the authority of the U.S. Environmental Protection Agency. For more information on the MS4 permit, please view this recent slideshow presentation.

This SWMP covers required elements the City has already implemented, is in the process of developing for implementation, or plans to develop in order to meet new or revised requirements set forth in the latest statewide requirements. The six Minimum Control Measures (MCMs) below are required under the MS4 Permit and are addressed in the SWMP. The measures apply to the Stormwater Division itself, requirements for construction sites, and requirements related to other City departments and activities.

  • MCM 1—Public Education and Outreach – The City must continue to educate the public in its permitted jurisdiction about the importance of the stormwater program and the public's role in that program.
  • MCM 2—Public Involvement and Participation – The City must continue to comply with all state and local notice requirements when implementing a public involvement/participation program.
  • MCM 3—Illicit Discharge Detection and Elimination – The City must continue to adopt and enforce City of Missoula ordinances or take equivalent measures to prohibit illicit discharges. The City must also implement a program to detect illicit discharges.
  • MCM 4—Construction Site Stormwater Management – The City must continue to develop a program to control the discharge of pollutants from construction sites within its permittee jurisdiction.
  • MCM 5—Post‐Construction Site Stormwater Management in New and Redevelopment – The City must continue to require long‐term post‐construction best management practices (BMPs) that protect water quality and control runoff flow to be incorporated into development and significant redevelopment projects.
  • MCM 6—Pollution Prevention/Good Housekeeping for Permittee Operations – The City must continue to examine its activities and develop programs to prevent the discharge of pollutants from these activities. The City must also educate staff on pollution prevention practices.

Through these MCMs, the SWMP aims to reduce the discharge of pollutants from the City's stormwater system to the maximum extent practicable and to protect water quality.

Description

The mission of the City's Stormwater Division is to protect public health and safety, natural resources, waterways, and our aquifer, while meeting or exceeding state and federal environmental quality regulations. The Division developed a Stormwater Management Program (SWMP) not only to comply with the state Municipal Separate Storm Sewer System (MS4) permit but also as a tool for achieving its mission. As a condition of the permit, the Division must solicit feedback on the SWMP from community stakeholders and the general public. A link to the the Stormwater Division's SWMP document is provided below.

Please review the document and then ask us questions and/or provide suggestions for future revisions using the Comments & Questions tab at the bottom of this page.

UPDATE—The SWMP update for 2022 includes a City-wide standard operating procedures for preventing pollution plan, which also applies to all City-owned facilities. This is the first time the City has had such a plan. Please use the link below to access the SWMP and then use the Comments & Questions tab at the bottom of the page to let us know what you think about the plan.

Stormwater Management Program - February 2022 (pdf)



Background

Nonpoint source pollution, like stormwater runoff, is a significant problem in Montana and the single largest cause of impaired waters statewide according to the Montana Department of Natural Resources and Conservation. The City of Missoula's Stormwater Utility manages the quantity, quality, and routing of stormwater runoff through our community. The effectiveness and efficiency of stormwater management have a direct impact on public health and safety, surface water quality, wildlife habitat, and future development.

Consequently, the federal government amended the Clean Water Act of 1972 in 1987 to regulate the management of stormwater runoff from municipalities and specific industrial classifications. Federal and state regulations require designated municipalities obtain and maintain coverage under the Montana Pollutant Discharge Elimination System General Permit for Storm Water Discharges Associated with Small Municipal Separate Storm Sewer Systems (MS4 Permit), which is administered by the Montana Department of Environmental Quality under the authority of the U.S. Environmental Protection Agency. For more information on the MS4 permit, please view this recent slideshow presentation.

This SWMP covers required elements the City has already implemented, is in the process of developing for implementation, or plans to develop in order to meet new or revised requirements set forth in the latest statewide requirements. The six Minimum Control Measures (MCMs) below are required under the MS4 Permit and are addressed in the SWMP. The measures apply to the Stormwater Division itself, requirements for construction sites, and requirements related to other City departments and activities.

  • MCM 1—Public Education and Outreach – The City must continue to educate the public in its permitted jurisdiction about the importance of the stormwater program and the public's role in that program.
  • MCM 2—Public Involvement and Participation – The City must continue to comply with all state and local notice requirements when implementing a public involvement/participation program.
  • MCM 3—Illicit Discharge Detection and Elimination – The City must continue to adopt and enforce City of Missoula ordinances or take equivalent measures to prohibit illicit discharges. The City must also implement a program to detect illicit discharges.
  • MCM 4—Construction Site Stormwater Management – The City must continue to develop a program to control the discharge of pollutants from construction sites within its permittee jurisdiction.
  • MCM 5—Post‐Construction Site Stormwater Management in New and Redevelopment – The City must continue to require long‐term post‐construction best management practices (BMPs) that protect water quality and control runoff flow to be incorporated into development and significant redevelopment projects.
  • MCM 6—Pollution Prevention/Good Housekeeping for Permittee Operations – The City must continue to examine its activities and develop programs to prevent the discharge of pollutants from these activities. The City must also educate staff on pollution prevention practices.

Through these MCMs, the SWMP aims to reduce the discharge of pollutants from the City's stormwater system to the maximum extent practicable and to protect water quality.

Discussions: All (1) Open (1)
  • Comments & Questions

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Page last updated: 12 Apr 2022, 03:52 PM