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Maintenance Responsibilities

Annual BMP Maintenance Report

To ensure that the maintenance of privately owned stormwater management facilities is conducted per the BMP Maintenance Agreement and the Stormwater Management Facilities Report (SWMFR), MSD requires that an Annual BMP Maintenance Report is submitted to the District for all commercial and residential homeowner association maintained facilities. The Annual Report should provide documentation that maintenance was performed in accordance with the Stormwater Management Facilities Report submitted to and approved by MSD for the development project. An MSD inspector will also periodically inspect the BMP.

The Annual Report should consist of a completed inspection checklist and/or maintenance log, narrative description of corrective action measures taken, photographs, and any other documentation appropriate for demonstrating compliance with the BMP Maintenance Agreement and your SWMFR. In the Annual Report, also provide the current property owner’s name, address, phone, and other relevant contact information.

For consistency and for your convenience, MSD has developed an Annual BMP Maintenance Report Form and BMP Inspection Checklists. The report form and the inspection checklists are not mandatory for use by BMP owners, and are being provided as templates to ensure compliance with minimal maintenance requirements. Links to both can be found be on this page. Use of the inspection checklists provided here, will not exempt BMP owners from design and maintenance requirements specified in the SWMFR. If the system in place is a proprietary system, please contact the manufacturer for the inspection checklist for the specific system.

MSD does not have a preferred BMP vendor list for BMP inspections, maintenance and/or annual reporting.

To avoid compliance enforcement actions, the Annual BMP Maintenance Report should be submitted no later than March 31st of the year following the reporting year.

The Annual Report should be submitted to:

Metropolitan St. Louis Sewer District 
Division of Environmental Compliance 
c/o Phase II Stormwater Management Program 
10 E. Grand Avenue 
St. Louis, MO 63147

BMPs that are located on a homeowner's lot(s) and that are not maintained by a homeowner association are not required to submit an annual report. However, a MSD inspector will periodically inspect the BMP.

BMP Maintenance Education Resources

As a service to all BMP owners, MSD provides education on BMP maintenance and ownership requirements. If you are interested in attending a scheduled educational workshop, please contact MSD’s Division of Environmental Compliance at (314) 436-8779.

Annual BMP Maintenance Report

Post-Construction Stormwater BMP Annual Maintenance Report Form

BMP Ownership and Maintenance

BMP Ownership and Maintenance Brochure
Porous Pavement Ownership and Maintenance Brochure
Rain Garden Ownership and Maintenance Brochure
Planter Box Ownership and Maintenance Brochure
Rain Garden and Planter Box Maintenance Video (YouTube)

BMP Inspection Checklists

Bioretention/Rain Garden
Permeable Pavement
Detention or Retention Pond/Basin
Swales
Filters
Infiltration Basin/Trench
Underground Detention
Amended Soils
Green Roof
Cistern/Dry Well/Rain Barrel
Storm Credit - Open Channel
Storm Credit - Sheet Flow to Buffer
Storm Credit - Natural Area Conservation
Storm Credit - Impervious Area Disconnection

For questions related to post-construction stormwater BMP maintenance and/or BMP ownership requirements please contact MSD's Division of Environmental Compliance at (314) 436-8779.

Proprietary BMP Manufacturer's Operation and Maintenance Guides

Hydrodynamic Separator Unit - Contech CDS Maintenance Guide
Hydrodynamic Separator Unit - Contech Vortechs Maintenance Guide
Hydrodynamic Separator Unit - Contech VortSentry VS Maintenance Guide
Hydrodynamic Separator Unit - Contech VortSentry HS Maintenance Guide
Hydrodynamic Separator Unit - Hydro International Downstream Defender Maintenance Guide
Proprietary BMP Filter - Contech StormFilter Maintenance Guide
Proprietary BMP Filter - Hydro International UpFlow Filter Maintenance Guide

Operation and Maintenance Plan

Operation and Maintenance Plan Guidance
Operation and Maintenance Plan Template
Change of Ownership Form

Operation and Maintenance Plan Revisions -- Minor revisions may include, but are not limited, a change in property owner, change in specifics of O&M schedule, change in maintenance procedures or contact. Minor revisions shall be submitted to MSD -- Division of Environmental Compliance, Attn: Stormwater Management Program, 10 E. Grand Avenue, St. Louis, MO 63147. These minor revisions are not subject to MSD’s development review process. Major Revisions are changes that will alter the stormwater BMPs design or operation from the original approved Design Report (i.e. BMP type, location, capacity, change in media composition, or other structural components), specifically the operation or performance of the system is being altered by a maintenance activity or repair. Major revisions are subject to MSD’s development review process and shall be submitted to MSD -- Engineering Department, Attn: Development Review, 2350 Market Street, St. Louis, MO 63103.