Excerpts from baton rouge Stormwater Management Plan
"After completion of the site construction and prior to Final Occupancy of the development or building, the Developer/Owner agrees to provide a Schedule of Maintenance for the constructed Best Management Practices (BMPs) as recommended in the approved Water Quality Impact Study (WQIS) and/or Stormwater Management Plan (SMP). This Schedule of Maintenance shall be attached and recorded as part of this Maintenance Covenant."
In order to comply with Federal and State regulations for urban storm water, a Stormwater Management Plan (SMP) will be required for all development and redevelopment projects that require demolition or complete removal of existing structures or impervious surfaces at a site and replacement with new development. Maintenance activities such as top-layer grinding and repaving are not considered redevelopment. Interior remodeling projects are also not considered to be redevelopment.
The Stormwater Management Plan shall include:
- Location: Map of location of subject property and adjacent development and infrastructure. Recent aerial photo (Google Maps, etc.) indicating site location.
- Existing Conditions: Description and map of existing site conditions, including land cover, contours, soil types, and estimated pollutant load. Indicate all drainage systems the site drains to.
- Proposed Development: Description and site plan of the proposed development, including land cover, contours, empirically expected pollutant load, proposed drainage ways, and stormwater Best Management Practices (BMPs). SMP shall recommend specific on-site drainage improvements to provide adequate capacity to manage the first inch (1”) of a ten (10) year storm event on the development site.
- Plan Implementation: Description of the specific proposed drainage ways and stormwater BMPs and how they meet the requirements for drainage and water quality as described in Sections 15.14, 15.16 and Appendix K of the East Baton Rouge Unified Development Code.
- Maintenance: Description and schedule of how the proposed drainage ways and stormwater BMPs will be maintained over time. For all building permits needing a Stormwater Management Plan, the following documents will be required prior to granting of Final Occupancy:
- Stormwater BMP Maintenance Covenant: A document signed by the property owner guaranteeing that all constructed stormwater BMPs will be continually maintained according to the recorded BMP maintenance description and schedule. The Maintenance Covenant and maintenance description/schedule must be filed with the East Baton Rouge Parish Clerk of Court prior to submittal to DPW.
- Design Professional Certification: A document signed and sealed by the professional of record who prepared the Stormwater Management Plan for the project, certifying that all components of the SMP were installed according to the approved building permit plans.
Stormwater BMP Practices for East Baton Rouge Parish
Site Management and Maintenance
The staff who will maintain and repair the development, once construction is completed and the the property is in use, are key players in stormwater management. They must ensure the stormwater treatment train continues to function in improving water quality, and must practice good housekeeping on the property to prevent the introduction of new pollution sources. The most important step is to prepare and implement a maintenance program. As part of the design of BMPs, the landscape architect should prepare a maintenance manual to assist staff in properly caring for the individual BMPs and the entire stormwater treatment train. The maintenance manual should include specific information on when and how to maintain and replace vegetation, clean per vious paving, and prevent stormwater pollution when repairing and maintaining other parts of the development.
Advised BMP Maintenance by type:
- Dry/Wet Pond: Twice annually, check for eroision of banks, and ensure conveyance is operational. Annually, check for sediment accumulation in pond and forebay, and clear inlet and outlet of debris. As needed/continually, manage pesticides and fertilizer and remove any litter or debris. Every 5-7 years remove sediment from forebay.
- Pervious Paving: Twice annually, use a street sweeper to vacuum.
- Vegetated BMPs: Annually (end of Autumn) remove invasive species. Twice annually check for plant pests and diseases and ensure conveyance and overflow outlets are clear and operational.