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City of Maryville
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Stormwater Management is located at the Maryville Municipal Building (Lower Level)
400 W Broadway Avenue | Maryville, TN 37801 | Phone: 865-273-3500
Business Hours | 8:00 a.m. - 5:00 p.m. | Closed 12:00 p.m. - 1 p.m. for lunch
Jana Brown, Stormwater Program Manager | 865-273-3512 | [email protected]
400 W Broadway Avenue | Maryville, TN 37801 | Phone: 865-273-3500
Business Hours | 8:00 a.m. - 5:00 p.m. | Closed 12:00 p.m. - 1 p.m. for lunch
Jana Brown, Stormwater Program Manager | 865-273-3512 | [email protected]
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Stormwater Management Program: Education and Outreach Public Participation and Involvement Illicit Discharge Detection and Elimination Construction Site Stormwater Runoff Control Post Construction Stormwater Management Pollution Prevention/Good Housekeeping Monitoring Program Annual Reports NEW! Stormwater Management Ordinances and Manual |
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NPDES Permit Section 4.2.5
The City implements stormwater management requirements that address stormwater quality at applicable new developments and redevelopments after construction is finished. Title 19, Chapter 5, known as the Vegetated Buffer Zone and Stormwater Quality ordinance, establishes the requirements as follows:
- Authorizes the City to regulate post-construction stormwater quality
- Requires permanent stormwater control measures (SCMs) to mitigate pollutants in stormwater for any land disturbance project that disturbs one acre or more, or smaller sites within a larger development plan, and discharges into the City’s stormwater drainage system
- Establishes requirements for permanent vegetated buffers
- References technical standards for permanent SCMs (Stormwater Management Manual Volume 1: Stormwater Design
- Defines criteria for who must submit a Stormwater Management Plan (formerly called a Water Quality Management Plan)
- Requires City approval prior of the SWMP before their SCM construction/installation
- Requires re-submittal of City-approved SWMP if the design or site conditions change
- Authorizes the City to administer performance bonds and require as-built plans
- Allows the City right-of-entry on property to inspect SCMs during and after their construction/installation
- Requires property owners maintain the SCMs located on their property
- Authorizes the City authority to enforce SCM maintenance
NPDES Permit Section 4.2.5
If you are planning a new development or redevelopment project in Maryville that will disturb one acre or more of land (or less if it's part of a larger plan of development), and it will discharge stormwater into the City's stormwater drainage system, you must submit a Stormwater Management Plan (SWMP). The SWMP is a stormwater design plan that describes the design of the project’s stormwater drainage system, stormwater control measures (SCMs), and water quality buffers.
Check out the City’s Information for Developers, Site Design Engineers, and Contractors page for additional information on land development in the City.
After submission of the SWMP, City staff will review it to ensure it complies with the Vegetated Buffer Zone and Stormwater Quality ordinance, the City of Maryville’s Stormwater Management Manual Volume 1: Stormwater Design, and any other applicable local requirements. To start the process, make sure any required fees are paid and that all submittal requirements are met. The City will notify applicants of any necessary corrections to the SWMP, with review cycles continuing until the SWMP is approved. A Grading Permit will only be issued after the SWMP is approved.
For detailed guidance on preparing and submitting the SWMP, refer to the City of Maryville’s Stormwater Management Manual Volume 1: Stormwater Design The table below provides an overview of SWMP requirements:
Key Sub-Reports in the SWMP
Check out the City’s Information for Developers, Site Design Engineers, and Contractors page for additional information on land development in the City.
After submission of the SWMP, City staff will review it to ensure it complies with the Vegetated Buffer Zone and Stormwater Quality ordinance, the City of Maryville’s Stormwater Management Manual Volume 1: Stormwater Design, and any other applicable local requirements. To start the process, make sure any required fees are paid and that all submittal requirements are met. The City will notify applicants of any necessary corrections to the SWMP, with review cycles continuing until the SWMP is approved. A Grading Permit will only be issued after the SWMP is approved.
For detailed guidance on preparing and submitting the SWMP, refer to the City of Maryville’s Stormwater Management Manual Volume 1: Stormwater Design The table below provides an overview of SWMP requirements:
Key Sub-Reports in the SWMP
Sub-Report |
Purpose |
General Information |
Provide the location, address, owner(s), area, and other key information on the proposed development. |
Pre-Development Hydrology Map |
See description in Chapter 3, Section 3.3 of the stormwater design manual. |
Drainage System Report |
Describes the proposed onsite stormwater conveyance system and how it ties into the public stormwater conveyance system. |
Post-Construction Hydrology Report |
Documents the proposed design for SCMs, including detention/retention basins, and water quality buffers. SCM design specifications are provided in Chapter 7. Water quality buffer design specifications are provided in Chapter 5 of the stormwater design manual. |
SCM Vegetation Report |
Describes the proposed vegetation for SCMs. Vegetation design specifications and plant selection guidance are included in the SCM design specifications located in Chapter 7 of the Stormwater Design Manual. |
SCM Protection Report |
Documents the permanent protective measures to be employed onsite to protect proposed SCMs from unwanted entry and damage. |
SCM Maintenance Report |
Document the type and location of each SCM proposed for the development in an easy-to-read map, intended for future property owners. Also describes how the SCM designs support future maintenance. |
NPDES Permit Section 4.2.5
The stormwater quality performance standards established in the City of Maryville’s Stormwater Management Manual Volume 1: Stormwater Design aligns with the requirements of TDEC’s small MS4 permit and supports the stormwater design requirements for water quality listed in Title 19, Chapter 5 of the Maryville Municipal Code. This volume includes:
The table below explains what each chapter of the manual covers. In the table,
- Design guidelines for stormwater control measures (SCMs), like detention and retention ponds, with specific criteria, performance standards, and hydrology methods
- Specifications for vegetated buffers along streams and waterways
- Required elements for SCMs that must be included in stormwater management plans for new developments
- Forms and checklists to help meet city ordinances and the manual’s guidelines
- Guidance on low-impact development (LID) practices, both nonstructural and structural, to help reduce the amount of stormwater runoff and lessen its negative effects on communities
The table below explains what each chapter of the manual covers. In the table,
- Guidance includes helpful but optional information to improve understanding and design quality
- Regulatory means the chapter has specific rules, standards, and requirements that must be followed to meet the Vegetated Buffer Zone and Stormwater Quality ordinance.
Summary of Manual Chapters
Chapter and Description (Regulatory = enforceable requirements; Guidance = helpful or educational information) |
Chapter 1. Introduction (Guidance) The introduction provides a general overview of the stormwater design manual, its applicability, objectives, use, and how it supports the city’s stormwater, floodplain management, and land development requirements. |
Chapter 2. The Need for Stormwater Management (Guidance) Chapter 2 provides insight into the hydrologic cycle, effects of urban runoff, and improvements in stormwater management in new developments and redevelopments. |
Chapter 3. Required Stormwater Plans (Regulatory) This chapter presents policies and criteria for Pre-Development Hydrology Maps, Stormwater Management Plans (i.e., stormwater design plans), and SCM As-Built Plans. |
Chapter 4. Non-Structural Low Impact Development Practices (Guidance and Regulatory) Chapter 4 provides information on the non-structural LID practices that can be used when planning and designing a development. The criteria and application of incentives for the use of low impact development practices are also established. |
Chapter 5. Water Quality Buffer Design (Regulatory) Chapter 5 defines the design and plan preparation requirements for vegetated (i.e., water quality) buffers. Chapter 5 provides rules and design specifications for SCMs, pretreatment measures, and SCM components. |
Chapter 6. SCM Standards, Methods, and Selection (Regulatory) Chapter 6 presents policies, criteria, and calculation methods for the design of structural water quality SCMs and SCM components presented in Chapter 7. |
Chapter 7. SCM Design Specifications (Regulatory) Chapter 7 provides rules and design specifications for SCMs, pretreatment measures, and SCM components. |
NPDES Permit Section 4.2.5
Stormwater Control Measures (SCMs): Key Information for Property Owners
SCMs are essential for managing stormwater on developed properties. They minimize or prevent flooding, erosion, and pollution, which protects the City’s health, safety, and economy. Most SCMs temporarily hold stormwater, removing many pollutants before releasing cleaner water off the property. Proper maintenance of SCMs is crucial. When maintenance is neglected, SCMs can’t operate effectively to protect properties, roadways, and local waterways from flooding and pollution. A lack of SCM maintenance can lead to costly repairs. However, well-maintained SCMs require minimal upkeep and can function effectively for years.
In Maryville, property owners are responsible for maintaining SCMs according to City requirements. While maintenance can be performed by tenants or contractors, the property owner is ultimately accountable for ensuring SCMs remain fully functional.
SCM Inspection and Maintenance Requirements
SCM maintenance is regulated by Maryville’s Title 19, Chapter 5 (Vegetated Buffer Zone and Stormwater Quality ordinance) ordinance. Before construction wraps up, SCMs must pass a final inspection to confirm they have been built in keeping with their City-approved design, are free of construction sediment and debris, and are ready for ongoing use. Here are the key policies for SCM maintenance:
SCMs are essential for managing stormwater on developed properties. They minimize or prevent flooding, erosion, and pollution, which protects the City’s health, safety, and economy. Most SCMs temporarily hold stormwater, removing many pollutants before releasing cleaner water off the property. Proper maintenance of SCMs is crucial. When maintenance is neglected, SCMs can’t operate effectively to protect properties, roadways, and local waterways from flooding and pollution. A lack of SCM maintenance can lead to costly repairs. However, well-maintained SCMs require minimal upkeep and can function effectively for years.
In Maryville, property owners are responsible for maintaining SCMs according to City requirements. While maintenance can be performed by tenants or contractors, the property owner is ultimately accountable for ensuring SCMs remain fully functional.
SCM Inspection and Maintenance Requirements
SCM maintenance is regulated by Maryville’s Title 19, Chapter 5 (Vegetated Buffer Zone and Stormwater Quality ordinance) ordinance. Before construction wraps up, SCMs must pass a final inspection to confirm they have been built in keeping with their City-approved design, are free of construction sediment and debris, and are ready for ongoing use. Here are the key policies for SCM maintenance:
- Start Immediately: Maintenance and required inspections should start as soon as the SCM is installed. During construction, these responsibilities may belong to the permit holder until final project approval or issuance of a Certificate of Occupancy.
- Owner Responsibility: Property owners may hire contractors or landscapers to maintain SCMs, but they are ultimately responsible for ensuring SCMs are in proper working order.
- Mandatory 5-Year Inspections : To ensure long-term effectiveness, all SCMs are required to undergo a comprehensive inspection at least once every five years. Inspections must be conducted by a qualified professional, such as a professional engineer or landscape architect licensed in the State of Tennessee, or another expert with proven knowledge of SCM design and maintenance standards. Completed inspection reports must be submitted to the City. Failure to comply with this requirement may lead to enforcement actions.
- Follow City Guidelines: Maintenance must follow the requirements established in Maryville’s SCM Inspection and Maintenance Manual. This manual is expected to be released as Volume 2 of the City’s Stormwater Management Manual soon. In the meantime, property owners can refer to the U.S. Environmental Protection Agency’s guidance on SCM inspection and maintenance.
- Enforcement: Failure to maintain SCMs will result in enforcement actions, including formal notices of violation, civil penalties, or mandated corrective measures, as outlined in the City’s enforcement response plan for permanent stormwater management.
- The City maintains an up-to-date inventory of all installed SCMs. This inventory is accessible to the public and available to the Tennessee Department of Environment and Conservation (TDEC) upon request. Each record in the inventory includes:
- SCM Description: A brief summary of the SCM type and its design characteristics.
- Responsible Party: Contact details of the person or organization responsible for the SCM.
- Inspection Schedules: Timetables for inspections conducted by both the City and the SCM owner.
- Maintenance Procedures: An outline or reference to maintenance tasks, including recommended frequency.
- Visual Documentation: Photographs showing the installed SCM.
- Records: Documentation of past maintenance and inspection activities.
NPDES Permit Section 4.2.5
There are several ways you can find out what new development and redevelopment projects are going on within the City. The City welcomes public requests and comments through the various channels listed below:
- Calls to City offices
- Using links on City webpages to email City staff
- The following list of public meetings MAY discuss stormwater related issues. Check the link to see the date, time, and agenda for each meeting: https://www.maryvillegov.com/
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