Water: Polluted Runoff
Model Ordinances Language : Stormwater Operation and Maintenance Model Ordinance
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Stormwater Operation and Maintenance Model Ordinance (PDF) (2 pp, 25K, About PDF)
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"Operation Maintenance and Management of Stormwater Management Systems" by the Watershed Management Institute.
Unlike other model ordinances, the operation and maintenance ordinance language is not "stand-alone". Operation and maintenance language would be a part of a broader stormwater ordinance.
Section I. Definitions
Best Management Practice (BMP)
Structural device, measure, facility or activity that helps to achieve stormwater management control objectives at a designated site.
Plan
A document approved at the site design phase that outlines the measures and practices used to control stormwater runoff at a site.
Section II. Design
- All stormwater BMPs shall be designed in a manner to minimize the need for maintenance and reduce the chances of failure. Design guidelines are outlined in the most recent version of _____________ (local or state stormwater manual).

Rather than incorporate specific stormwater design or maintenance standards into the ordinance itself, it is best to reference "the most recent version" of a stormwater manual. This way, technical information can remain up-to-date without making legal changes to the ordinance.

The Maryland Stormwater Design Manual is one example of an up-to-date stormwater design manual that explicitly defines design and regular maintenance measures. For more information, go to the Maryland Stormwater Design Manual. Under topics, choose "Stormwater Design Manual."
- Stormwater easements and covenants shall be provided by the property owner for access for facility inspections and maintenance. Easements and covenants shall be recorded with ____________________ (stormwater agency) prior to the issuance of a permit.
- Final design shall be approved by ____________________ (stormwater agency)

An example stormwater easement from Montgomery County, Maryland is included in this section.
Section III. Routine Maintenance
- All stormwater BMPs shall be maintained according to the measures outlined in the most recent version of _______________ (local or state stormwater manual), and as approved in the permit.
- The person(s) or organization(s) responsible for maintenance shall be designated in the plan. Options include
- Property owner
- Homeowner's association, provided that provisions for financing necessary maintenance are included in deed restrictions or other contractual agreements
- _________________ (stormwater management agency)
- Maintenance agreements shall specify responsibilities for financing maintenance.

For an example of a maintenance agreement, see the maintenance agreement from Albemarle County, Virginia.
Section IV. Non-Routine Maintenance
Non-routine maintenance includes maintenance activities that are expensive but infrequent, such as pond dredging or major repairs to stormwater structures.
- Nonroutine maintenance shall be performed on an as-needed basis based on information gathered during regular inspections.
- If nonroutine maintenance activities are not completed in a timely manner or as specified in the approved plan, ___________________ (stormwater agency) may complete the necessary maintenance at the owner's/operator's expense.
V. Inspections
- The person(s) or organization(s) responsible for maintenance shall inspect stormwater BMPs on a regular basis, as outlined in the Plan.
- Authorized representatives of ___________________ (stormwater agency) may enter at reasonable times to conduct on-site inspections or routine maintenance.
- For BMPs maintained by the property owner or homeowner's association, inspection and maintenance reports shall be filed with ___________________ (stormwater agency), as provided for in the plan.
- Authorized representatives of __________________ (stormwater agency) may conduct inspections to confirm the information in the reports filed under Section C.



