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Home My WebLink AboutNCS000540_SWMP_NCS000540_20220524Town of Mooresville Stormwater Management Plan Permit Number: NCSo00540 2017 Version Updates: December 16, 2020 August 10, 2021 Table of Contents Introduction.................................................................................................................................... 5 MS4Information ............................................................................................................................ 6 JurisdictionalArea .................................................................................................................. 6 Stormwater Conveyance System ............................................................................................. 6 ReceivingStreams .................................................................................................................... 7 TMDLs...................................................................................................................................... 7 Impaired streams, likely sources, and existing programs that address the impairment ......... 7 Existing Water Quality Programs ............................................................................................ 8 Partnerships and/or inter -local agreements ........................................................................... 8 Stateprograms ........................................................................................................................ 8 Pointsof Contact ..................................................................................................................... 9 Section i: Public Education and Outreach Program ..................................................................... lo 1.1 Goals and Objectives ............................................................................................................. 10 1.2 Target Pollutants and/or Stressors ...................................................................................... 10 1.3 Target Audiences .................................................................................................................. 10 1.4 Residential and Industrial/Commercial Issues .................................................................... 11 1.5 Informational Website .......................................................................................................... 11 1.6 Distribution of Public Education Materials .......................................................................... 12 1.7 Hotline/Helpline ................................................................................................................... 12 1.8 Public Education and Outreach Program ............................................................................. 12 Section 2: Public Involvement and Participation Program ........................................................... 14 2.1 Public Review and Comment on Stormwater Plan .............................................................. 14 2.2 Target Pollutants and/or Stressors ...................................................................................... 14 2.3 Target Audiences .................................................................................................................. 14 2.4 Residential and Commercial Issues ..................................................................................... 14 Section 3: Illicit Discharge Detection and Elimination Program .................................................. 16 3.1 Illicit Discharge Detection and Elimination Program .......................................................... 16 3.2 Legal Authorities .................................................................................................................. 16 3.3 Storm Sewer System Map of Major Outfalls ........................................................................ 16 3.4 Dry Weather Flow Detection Program ................................................................................. 16 3.5 Investigate Sources of Identified Illicit Discharges .............................................................. 16 3.6 Track and Document Investigations of Illicit Discharges .................................................... 16 2 3.7 Employee Training ............................................................................................................... 17 3.8 Public Education .................................................................................................................. 17 3.9 Public Reporting ................................................................................................................... 17 3.10 Enforcement of the IDDE Ordinance ................................................................................. 17 Section 4: Construction Site Runoff Controls Program ............................................................... 20 Section 5: Post Construction Site Runoff Controls Program ........................................................ 20 5.1 Legal Authorities .................................................................................................................. 20 5.2 Strategies which include SCMs appropriate for the MS4 .................................................... 21 5.3 Plan Reviews ......................................................................................................................... 21 5.4 Inventory of Projects with Post -Construction Structural Stormwater Control Measures ... 21 5.5 Deed Restrictions and Protective Covenants ....................................................................... 21 5.6 Mechanism to require long-term operation and maintenance of Stormwater Control Measures(SCMs) ....................................................................................................................... 21 5.7 Inspections .......................................................................................................................... 22 5.8 Educational materials and training for developers ............................................................. 22 5.9 Enforcement ........................................................................................................................ 22 Section 6: Good Housekeeping and Pollution Prevention for Municipal Operations .................. 26 6.1 Inventory of municipally owned or operated facilities ........................................................ 26 6.2 Operation and Maintenance (O&M) for municipally owned or operated facilities ............ 26 6.3 Spill Response Procedures .................................................................................................. 26 6.4 Streets, roads, and public parking lots maintenance .......................................................... 26 6.5 Operation and Maintenance (O&M) for municipally -owned or maintained catch basins and conveyance systems ........................................................................................................... 27 6.6 Identify municipally owned or maintained structural stormwater controls ...................... 27 6.7 O&M for municipally -owned or maintained structural stormwater controls .................... 27 6.8 Pesticide, Herbicide and Fertilizer Application Management ............................................ 27 6.9 Staff Training ...................................................................................................................... 27 6.10 Prevent or Minimize Contamination of Stormwater Runoff from all areas used for Vehicle andEquipment Cleaning .......................................................................................................... 28 9 Table of Tables Table 1: Town of Mooresville Approximate Land Use Composition .............................................. 6 Table 2: Summary of Current MS4 Mapping .................................................................................. 7 Table 3: Town of Mooresville Receiving Waters ............................................................................. 7 Table 4: Target Pollutants for the Public Education and Outreach Program ............................... lo Table 5: Pollutants associated with residential and industrial/commercial issues ...................... 11 Table 6: Public Education and Outreach BMP Table .................................................................... 13 Table 7: Public Involvement and Participation BMP Table .......................................................... 15 Table 8: Illicit Discharge Detection and Elimination Program BMP Table ................................. 18 Table 9: Post Construction Site Runoff Controls Program BMP Table ........................................ 23 Table lo: Good Housekeeping and Pollution Prevention Program BMP Table ........................... 29 il Introduction The Town of Mooresville began operating under a National Pollutant Discharge Elimination System (NPDES) Phase H Municipal Separate Storm Sewer System (MS4) Permit on December 1, 2oli. The permit has a 5-year cycle. The current permit is effective from February 20, 2017 to February 19, 2022. The purpose of this Stormwater Management Plan (SWMP) is to establish and define the means by which the Town of Mooresville will comply with its National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) Permit and the applicable provisions of the Clean Water Act to meet the federal standard of reducing pollutants in stormwater runoff to the maximum extent practicable. This Stormwater Plan includes a description of the individual Best Management Practices (BMPs) within each program that will be used to fulfill the permit requirements. The Plan will also indicate the frequency of the BMP, measurable goals for each BMP, the implementation schedule, funding and the responsible person or position for implementation. The Town's Stormwater Management Plan incorporates the following minimum measures as described by the NPDES Phase H Permit: 1. Public Education and Outreach — The objective of this minimum measure is to distribute educational material and information to the public that describes the impacts of stormwater discharges on water bodies and how members of the community can reduce the pollutants in stormwater runoff. 2. Public Involvement and Participation — The objective of this minimum measure is to comply with State and local public notice requirements when implementing a public involvement and participation program. 3. Illicit Discharge Detection and Elimination — This program protects water quality by investigating reports of illicit discharges and illicit connections. 4. Construction Site Runoff Controls — This program is operated by Iredell County Erosion and Sediment Control. 5. Post Construction Site Runoff Controls — This program reduces the impacts of stormwater runoff from new development and redevelopment by requiring the construction and maintenance of post construction stormwater controls. 6. Pollution Prevention and Good Housekeeping for Municipal Operations — This program reduces pollution in stormwater runoff from municipal facilities and operations. 5 MS4 Information Based on the US Census Bureau data, the population estimate for the Town of Mooresville in July 2019 was 39,132. In April 2010, the population estimates base for the Town of Mooresville was 34,367. The US Census Bureau data indicates an 13.9% growth in population between April 2010 and July 2019. Jurisdictional Area The Town of Mooresville MS4 jurisdictional area is approximately 24 square miles. The Town of Mooresville is located in southern Iredell County in the Piedmont region of North Carolina. The Town of Mooresville is within the Catawba and Yadkin/Pee-Dee River Basins and the municipal limits extend into the WS-IV Critical and Protected areas as well as the WS-II Critical Area. According to the Drainage Master Plan completed by ESP in January 2o16, the land use composition within the Town of Mooresville is as detailed in the table below: Table 1: Town ofMooresville Approximate Land Use Composition Land Use Category % Total Area Commercial 15% Industrial 7% Institutional 6% Multi -Family 3% Single -Family — High 19% Single -Family — Low 5% Single -Family — Medium 8% utility 2% Woods/Undeveloped 36% Stormwater Conveyance System The existing MS4 serving the Town of Mooresville is comprised of a network of open ditches, swales, pipes, culverts and structural SCMs that are within the incorporated limits. The stormwater maintenance crew maintains all stormwater drainage infrastructure within the rights -of -way of Town owned and maintained roads and within easements dedicated to the Town. Maintenance of the Town's MS4 conveyance system is currently funded using the stormwater utility fee established in January 2015. The annual revenue of the stormwater utility fee for fiscal year 2020 was approximately $1,8og,gog and is used for permit compliance, maintenance of the Town's MS4 and capital improvements to the Town's MS4. no Table 2: Summary of Current MS4 Mapping Percent Of MS4 Area go % Mapped No. of Major Outfalls* 210 total Mapped Receiving Streams The Town of Mooresville MS4 conveyance system discharges to the following streams within the Yadkin/Pee-Dee River Basin: Back Creek, Dye Branch, Rocky River, South Fork Withrow Creek and West Branch Rocky River. It also discharges to the following streams within the Catawba River Basin: Byers Creek, Davidson Creek, McCrary Creek, Reeds Creek and Work Creek. 3 below shows the Town of Mooresville receiving waters. Table 3: Town ofMooresville Receiving Waters River Basin Receiving Stream Name Stream Segment Water Quality Classification TMDL (Yes/No) Byers Creek 11-89-(1) WS-IV No Byers Creek 11-89-(2) WS-IV; CA No Davidson Creek 11-1o6 WS-IV; CA No Catawba McCrary Creek 11-91. WS-IV,B; CA No Reeds Creek 11-10441) WS-IV,B No Reeds Creek 11-104-(2) WS-IV,B; CA No Work Creek 11-105 WS-IV,B; CA No Back Creek 12-1o8-21-140-5) WS-11;HQW No Dye Branch 13-7-2 C No Yadkin Pee- Rocky River 13-17 C Yes Dee South Fork Withrow Creek 12-108-21-3-2 C No West Branch Rocky River 13-7-3 C No TMDLs No approved TMDL with an approved Waste Load Allocation (WLAs) assigned to stormwater at this time. Impaired streams, likely sources, and existing programs that address the impairment Dye Creek (Branch) is categorized as Impaired (CategorY 5) due to Benthos Poor (Nar, AL, FW) and was listed on the 303(d) list as of 1998. 7 Rocky River is categorized as Impaired due to ecological/biological integrity benthos, fecal coliform, mercury in fish tissue, and turbidity. TMDL for mercury has been developed but is not applicable to stormwater permittees at this time. TMDL for fecal coliform was approved in September 2002 but does not include an approved WIA for stormwater. Rocky River is listed on the 303(d) list for a turbidity impairment as of 1998 (IRCategorY 3al) and a Benthos Fair impairment as of 1998 (IR Category 5). The Town of Mooresville takes measures to address the TMDL for fecal coliform in Rocky River. The Rocky River Wastewater Treatment operates under a NCGil0000 permit and has an updated Stormwater Pollution Prevention Plan for the facility. The SWPPP outlines the layout of the facility, outfall. monitoring information and the best management practices used to limit exposure. Pet waste was added to the list of Target Pollutants in hopes to mitigate Fecal Coliform in Rocky River and educational materials are to be distributed to appropriate audiences. Existing Water Quality Programs Requirements of Watershed Protection Overlay Districts are detailed in the Town of Mooresville Zoning Ordinance, established in accordance with the requirements in North Carolina General Statutes Section 143-214-5. These standards are designed to regulate density and impervious surface cover in water supply watershed areas in order to promote public health, safety, and general welfare through control of non -point source pollution within watershed protection areas. Partnerships and/or inter -local agreements Town of Mooresville is a part of the Regional Stormwater Partnership which maintains a website including general stormwater information. The Regional Stormwater Partnership develops TV and radio advertisements to educate the public about illicit discharges and stormwater pollution and holds different workshops and "Tech Talks" throughout the year to provide education on stormwater related topics. The Town of Mooresville relies upon the Iredell County Erosion Control Section to comply with requirements of the Construction Site Runoff Control Program. The Town of Mooresville and Iredell County entered into an Interlocal Agreement for Enforcement Services of Iredell County Soil Erosion and Sediment Control Ordinance on September 15, 2009. State programs The Town of Mooresville relies on the NCDEQ Division of Energy, Mineral and Land Resources Sediment and Erosion Control Program to comply with requirements of the Construction Site Runoff Control Program. E-43 Points of Contact Marissa Meltzer Jonathan Young Randall Hemann Stormwater Program Specialist Engineering Services Director Town Manager 2523 Charlotte Highway 2523 Charlotte Highway 413 N. Main Street Mooresville, NC 28117 Mooresville, NC 28117 Mooresville, NC 28115 704-799-4195 704-799-4o65 704-662-3188 mmeltzer(@mooresvillenc.g jyoungamooresvillenc.g rhemann(&mooresvillenc.g Figure i: Organizational Chart Section i: Public Education and Outreach Program The Town of Mooresville's Public Education and Outreach Program educates residents, business owners and other people within the community about the impacts of stormwater on the Town's receiving waters, and what members of the community can do to reduce pollutants in stormwater runoff. The Stormwater Program Specialist is responsible for implementation and the program is funded through the Stormwater Utility Fee. Some requirements of the Public Education and Outreach program are fulfilled through the Town's membership with the Regional Stormwater Partnership of the Carolinas (RSPC), which is further discussed at the end of this section. The following sections discuss the BMPs implemented to fulfill these requirements. See Table for the measurable goals, frequency and implementation schedule for each BMP. i.i Goals and Objectives The goals and objective of the Town of Mooresville's Public Education and Outreach Program is to educate the community about the impacts of stormwater discharges on water bodies and the steps the public can take to reduce pollutants in stormwater runoff through the distribution of educational materials and/or outreach activities. 1.2 Target Pollutants and/or Stressors Table 4 below describes the pollutants and pollutant sources targeted for the public education and outreach program for the current permit cycle. Educational information provided will include the impacts of stormwater pollution on water bodies and the steps the public can take to reduce pollutants in stormwater runoff. Target pollutants are chosen based on citizen complaints and requests for service, and information provided by Town staff. Table 4: Target Pollutantsfor the Public Education and Outreach Program Target Pollutant PoBution Source Grass Clippings, leaves and yard waste Residential areas, landscaped areas Automotive Fluids Residential areas Pet Waste Residential areas, public open areas Trash Garbage and litter Illegal Dumping Dumpsters Stormwater education and pollution prevention information for the targeted pollutants are to be done through the distribution of flyers at town events, the distribution of door hangers after volunteer storm drain marking events, and articles published in the Town Voice newsletter included with the utility bill. See Section 1.6 for additional information regarding the distribution of educational information addressing target pollutants and/or stressors. 1.3 Target Audiences Homeowners and business owners are the target audiences for the public education and outreach program. Homeowners were chosen as a target audience for the Public Education and 10 Outreach program because they are most likely to engage in activities that produce or involve the target pollutants listed in Table - The Town of Mooresville has a wide variety of businesses which have the potential to contribute to stormwater pollution. A selection of businesses and facilities which conduct activities that produce the target pollutants will receive targeted education providing information regarding stormwater pollution prevention specific to their business. 1.4 Residential and Industrial/Commercial Issues The following residential and industrial/commercial stormwater issues will be addressed in the Town's Public Education and Outreach Program. Table 5: Pollutants associated with residential and industriallcommercial issues Issue Pollutant Impacts Lawn and garden Nutrients (Grass Excess nutrients discharged from the care activities clippings, leaves, yard Town's MS4 and into receiving waters waste) increase algae growth which negatively impacts aquatic plants and wildlife. Automotive Automotive Fluids Negative environmental impacts on the Maintenance Town's receiving waters. Pet Waste Pet Waste Excess nutrients and bacteria discharged from the Town's MS4 can negatively impact the Town's receiving waters. Littering in Trash Increase in bacteria in stormwater runoff neighborhoods, which can negatively impact human health. Dumpsters and Trash Cans Steep Slopes Sediment Degradation of streambanks and negative impacts on aquatic plant and wildlife habitats Public education handouts and other distributed materials address the pollutants listed above that are associated with residential and industrial/commercial issues. Issues are also to be addressed through articles in a newsletter distributed to both residents and businesses who receive a utility bill. See Sections 1.6 and 1.8 for further information regarding distributed educational materials. 1.5 Informational Website A website containing information on the Town's stormwater program is maintained by the Stormwater Program Specialist. The link for the website is: https:llmooresvillenc.gOvl5OOlStormwater The website includes a link to the Town of Mooresville Post Construction and Illicit Discharge and Connection Ordinance, contact information for the Stormwater Maintenance Supervisor, forms for post construction stormwater control measures and general stormwater pollution prevention information. The website also includes information regarding the six minimum measures, how to volunteer to mark storm drains, and how to report an illicit discharge and an 11 up-to-date version of this SWMP which includes annual reporting information for the previous fiscalyear. 1.6 Distribution of Public Education Materials Educational information about stormwater, stormwater pollution, and stormwater pollution prevention is distributed periodically through the utility bill mailer and through flyers and handouts distributed at various events in Mooresville throughout the year. Educational materials are also distributed in the field when conducting illicit discharge investigations or routine facility inspections. 1.7 Hodine/Helpline A stormwater hotline/helpline for requesting assistance with stormwater related issues is maintained and advertised on the Town's stormwater website. (https://www.mooresvillenc.90v/5oo/Stormwater). The hotline/helpline is also listed on distributed educational materials. 1.8 Public Education and Outreach Program The Town's Stormwater Public Education and Outreach Program provides educational information to residents about how they can protect water quality and reduce stormwater pollution. Information is provided through Town Voice articles, the Town of Mooresville Stormwater website, handouts and door hangers. Educational demonstrations and presentations are also available upon request. The Town of Mooresville is a member of the Regional Stormwater Partnership of the Carolinas, which is a non-profit organization that provides an opportunity for municipalities in the region to collaborate on projects related to public education, outreach, and training. The RSPC allows the Town of Mooresville to reach a wider audience and provide more outreach, education, and public information than would be possible for us as an individual municipality. The RSPC maintains an educational website with stormwater information and information on how to report an illicit discharge, http:ZIregionalstormwater.org. Throughout the year, the RSPC holds numerous workshops and educational events. 12 Table 6: Public Education and Outreach BMP Table No. BMP Measurable Goal Implementation Frequency Schedule 1.1 Goals and Objectives Defined goals and objectives of the Local Public Implemented in year one of Review annually and Education and Outreach Program based on the permit cycle. update if needed. community wide issues. 1.2 Describe target The permittee shall maintain a description of Target pollutants and/or Review annually and pollutants and/or the target pollutants and/or stressors and likely stressors are identified in year update if needed. stressors sources. one of the permit cycle. 1.3 Describe target The permittee shall maintain a description of Target audiences are Review annually and audiences the target audiences likely to have significant identified in year one of the update if needed. storm water impacts and why they were permit cycle. selected. 1.4 Describe residential and The permittee shall describe issues, such as Residential and Review annually and industrial/commercial pollutants, likely sources of those pollutants, industrial/commercial issues update if needed. issues impacts, and the physical attributes of are identified in year one of stormwater runoff, in their education/outreach the permit cycle. program. 1.5 Informational Web Site The permittee shall promote and maintain, an Informational website will Review annually and internet web site designed to convey the continue to be maintained update if needed. message. throughout permit cycle. 1.6 Distribute public The permittee shall distribute stormwater Public education materials Public education education materials to educational material to appropriate target will be distributed beginning materials will be identified target groups. Instead of developing its own materials, in year one of permit cycle. distributed at least audiences and user the permittee may rely on Public Education and twice per year groups. For example, Outreach materials supplied by the state, throughout the schools, homeowners, and/or other entities through a cooperative permit cycle. and/or businesses. agreement, as available, when implementing its own program. 1.7 Maintain Hotline/Help The permittee shall promote and maintain a Hotline/Helpline will Continuously line stormwater hotline/helpline for the purpose of continue to be maintained maintained. public education and outreach. throughout the permit cycle. 1.8 Implement a Public The permittee's outreach program, including Public Education and Review annually and Education and Outreach those elements implemented locally or through Outreach program will be update if needed. Program. a cooperative agreement, shall include a continued throughout the combination of approaches designed to reach permit cycle. the target audiences. For each media, event or activity, including those elements implemented locally or through a cooperative agreement the permittee shall estimate and record the extent of exposure. 13 Section 2: Public Involvement and Participation Program The Town of Mooresville implements a Public Involvement and Participation Program with the goal of involving the citizens of the Town of Mooresville in the Stormwater Program and complying with State and Local notice requirements. The Stormwater Program Specialist is responsible for implementation and the program is funded through the Stormwater Utility Fee. The following sections discuss the BMPs implemented to fulfill these requirements. See Table 7 for the measurable goal, frequency and implementation schedule for each BMP. 2.1 Public Review and Comment on Stormwater Plan The Town of Mooresville Stormwater Plan is posted on the Town's Stormwater website (https://mooresvillenc.gov/.r,00/stormwater). The Stormwater Program Specialist is available to respond to any questions or comments from citizens. A public meeting will be scheduled before the end of the permit cycle. 2.2 Target Pollutants and/or Stressors See Section 1.2 for information regarding targeted pollutants and/or stressors. 2-3 Target Audiences See Section 1.3 for additional information regarding target audiences. 2-4 Residential and Commercial Issues See Section 1.4 for information regarding residential and commercial issues. 14 Table 7: Public Involvement and Participation BMP Table No. BMP Measurable Goal Implementation Frequency Schedule 2.1 Allow the public an The permittee shall conduct at least one Stormwater Plan is made Stormwater Plan will opportunity to review public meeting during the term of the available to the public be available and comment on the permit to allow the public an throughout the permit cycle. throughout the permit Stormwater Plan opportunity to review and comment on cycle. the Stormwater Plan. 2.2 Describe target The permittee shall maintain a Target pollutants and/or Review annually and pollutants and/or description of the target pollutants stressors are identified in year update if needed. stressors and/or stressors and likely sources. one of the permit cycle. 2.3 Describe target The permittee shall maintain a Target audiences are identified Review annually and audiences description of the target audiences likely in year one of the permit cycle. update if needed. to have significant storm water impacts and why they were selected. 2.4 Describe residential The permittee shall describe issues, Residential and Review annually and and such as pollutants, likely sources of industrial/commercial issues are update if needed. industrial/commercial those pollutants, impacts, and the identified in year one of the issues physical attributes of stormwater permit cycle. runoff, in their education/outreach program. 15 Section 3: Illicit Discharge Detection and Elimination Program The Town of Mooresville implements an Illicit Discharge Detection and Elimination program with the goal of detecting, eliminating and prohibiting non-stormwater discharges. The Stormwater Program Specialist is responsible for implementation and the program is funded through the Stormwater Utility Fee. The following sections discuss the BMPs implemented to fulfill these requirements. See Table 6 for the measurable goal, frequency and implementation schedule for each BMP. 3.11 Illicit Discharge Detection and Elimination Program The illicit discharge detection and elimination program will be detailed in a written document maintained by the Stormwater Program Specialist. This document will include details regarding the assessment of the program, how the program is to be evaluated, and how it is to be integrated. 3.2 Legal Authorities The Town of Mooresville Post Construction and Illicit Discharge and Connection Ordinance became effective September2,2014. Article V of the Post Construction and Illicit Discharge and Connection Ordinance defines illicit discharges and illicit connections. Article VI of the ordinance discusses enforcement and the procedure to be followed in the event of violations of the ordinance. There have been no updates to the ordinance since the chapter took effect on September2,2014. 3-3 Storm Sewer System Map of Major Outfalls The Town of Mooresville maintains a GIS map of the municipal storm sewer system including inlets, pipes, outfalls and major outfalls. This map also shows rivers and streams in the area. This map is updated periodically to reflect new construction and new information. 3-4 Dry Weather Flow Detection Program Details and written procedures associated with the dry weather flow detection program are detailed in the Illicit Discharge Detection and Elimination program document. 3-5 Investigate Sources of Identified Illicit Discharges Article VI, Section25-31 of the Phase 11 Post Construction and Illicit Discharge and Connection Ordinance details the procedure for investigating reported illicit discharges. The Illicit Discharge Detection and Elimination Program document shall also detail the process for investigating illicit discharges. 3.6 Track and Document Investigations of Illicit Discharges Each report of an illicit discharge is tracked using a database. Data tracked for each report includes: the date(s) the illicit discharge was observed and reported, the results of the investigation, any follow-up that was required, and the date the investigation was closed. This database and all other documentation of illicit discharges are to be maintained by the Stormwater Program Specialist. 16 3.7 Employee Training All employees who as part of their normal job responsibilities may come into contact with or otherwise observe an illicit discharge will receive training at least once per year. Training will include information on how to recognize an illicit discharge and how to report the illicit discharge. Training can be in the form of posters, handouts and presentations. Documentation of training will be kept by the Stormwater Program Specialist. 3.8 Public Education The Stormwater Program Specialist will maintain information on the Town's stormwater website about illicit discharges including improper disposal of waste. Information about illicit discharges will be periodically distributed through articles in the Town Voice Newsletter and other distributed materials. 3.9 Public Reporting The Town's stormwater website includes a section on illicit discharges which includes a phone number and email address that the public is encouraged to use to report suspected illicit discharges. The report of an illicit discharge will prompt the Stormwater Program Specialist to begin carrying out procedures detailed in Article VI of the Phase II Post Construction and Illicit Discharge and Connection Ordinance. 3-io Enforcement of the IDDE Ordinance A database with data showing the date and address for each NOV issued is maintained by the Stormwater Program Specialist. This database can be used to track the number of NOVS sent to each address over time so that chronic violators can be recognized, and appropriate measures can be pursued. 17 Table 8: Illicit Discharge Detection and Elimination Program BMP Table No. BMP Measurable Goal Implementation Frequency Schedule 3.1 Maintain an Illicit Maintain a written Illicit Discharge Detection A written IDDE program is IDDE program Discharge Detection and Elimination Program, including provisions maintained throughout the will be reviewed and Elimination for program assessment and evaluation and permit cycle. and updated as Program integrating program. needed. 3.2 Maintain adequate The permittee shall maintain IDDE ordinances Phase II Post Construction Review annually legal authorities or other regulatory mechanisms that provides the and Illicit Discharge and and update if legal authority to prohibit illicit connections and Connection Ordinance needed. discharges. became effective September 2� 2014. 3.3 Maintain a Storm The permittee shall maintain a current a map Map of storm sewer system Map will be Sewer System Map of showing major outfalls and receiving streams. with major outfalls is updated as Major Outfalls. updated periodically needed. throughout the permit cycle. 3.4 Implement a program The permittee shall maintain a program for Dry weather flow detection Review annually to detect dry weather conducting dry weather flow field observations in program is maintained and update if flows accordance with written procedures. throughout the permit cycle. needed. 3.5 Investigate sources of The permittee shall maintain written procedures Procedures for investigation Review annually identified illicit for conducting investigations of identified illicit of identified illicit discharges and update if discharges. discharges. are implemented during year needed. one of the permit cycle. 3.6 Track and document For each case the permittee shall track and Tracking and documentation Illicit discharge investigations illicit document 1) the date(s) the illicit discharge was of illicit discharges is investigations will discharges observed; 2) the results of the investigation; 3) implemented at the start of be tracked and any follow-up of the investigation; and 4) the the permit cycle. documented date the investigation was closed. throughoutthe e. ME 3.7 Provide Employee The permittee shall implement and document a Employee training for Appropriate Training training program for appropriate municipal staff, appropriate municipal staff municipal staff who as part of their normal job responsibilities, is implemented in the first will receive may come into contact with or otherwise observe year of the permit cycle. training at least an illicit discharge or illicit connection. once per year. 3.8 Provide Public The permittee shall inform public employees, Public education materials Public education Education businesses, and the general public of hazards will be distributed beginning materials will be associated with illegal discharges and improper in year one of permit cycle. distributed at least disposal of waste. once per year throughoutthe c e. 3.9 Provide a public The permittee shall promote, publicize, and A public reporting Continuously reporting mechanism facilitate a reporting mechanism for the public mechanism is provided and provided and and staff to report illicit discharges and establish maintained throughout the maintained and implement citizen request response permit cycle. throughoutthe procedures. permit cycle. 3.10 Enforcement of the The permittee shall implement a mechanism to A mechanism to track the Enforcement of IDDE ordinance track the issuance of notices of violation and enforcement of the IDDE the IDDE enforcement actions as administered by the ordinance is maintained ordinance will be permittee. This mechanism shall include the throughout the permit cycle. tracked and ability to identify chronic violators for initiation documented of actions to reduce noncompliance. throughoutthe c e. EVE Section 4: Construction Site Runoff Controls Program The Town of Mooresville relies upon the North Carolina Division of Energy, Mineral, and Land Resources Sediment and Erosion Control Program and Iredell County Erosion Control Section to comply with this minimum measure. The Town of Mooresville and Iredell County entered into an Interlocal Agreement for Enforcement Services of Iredell County Soil Erosion and Sediment Control Ordinance on September 15, 2009. The Town of Mooresville will continue to document reports of issues with construction site runoff controls and reports to Iredell County Erosion Control Section. Section 5: Post Construction Site Runoff Controls Program The Town of Mooresville implements and enforces a Post -Construction Site Runoff Controls Program with the goal of addressing stormwater runoff from new development and redevelopment projects that disturb greater than or equal to one acre, including projects less than one acre that are part of a larger common plan of development or sale, that discharge into the MS4. Another objective of this program is to address post -construction runoff with the Phase II Post Construction and Illicit Discharge and Connection Ordinance and to ensure long- term operation and maintenance of stormwater control measures. The Stormwater Program Specialist is responsible for implementation and the program is funded through the Stormwater Utility Fee. The following sections discuss the BMPs implemented to fulfill these requirements. See Table 2 for the measurable goal, frequency and implementation schedule for each BMP. 5 - iL Legal Authorities The Town of Mooresville adopted the Post Construction and Illicit Discharge and Connection Ordinance, effective September 2, 2014. This ordinance establishes the legal authorities to meet the objectives of the Post Construction Site Runoff Controls program. The ordinance details requirements for stormwater control measures and refers to the Town of Mooresville Land Development Standards, which references the latest edition of the Stormwater Best Management Practices Manual prepared by NCDEQ, for the design requirements. The ordinance establishes design and review criteria for the construction, function and use of structural stormwater control measures (SCMs) that may be used to meet the standards established by this ordinance and the Town of Mooresville Land Development Standards as well as the administrative procedures for the submission, review, approval and disapproval of stormwater management plans, and for the inspection of approved projects. Plan reviews and inspections are carried out by Planning Department and Engineering Department staff. Owners of post -construction structural SCMs are required to record and submit an Operation and Maintenance agreement for each SCM. The operation and maintenance agreement includes a statement that the Stormwater Maintenance Supervisor has the right to enter the facility if they have reason to believe it has become necessary to inspect, monitor, maintain, repair or reconstruct the SCM. Owners are also required to submit annual inspection reports that have been signed by a qualified professional as defined by the ordinance beginning January 1-t of the 20 calendar year after the date of the as -built certification and each year thereafter on or before March 31s'of that calendar year. 5.2 Strategies which include SCMs appropriate for the MS4 The Town of Mooresville Land Development Standards states that structural stormwater control measures are to be designed following using the latest version of the Stormwater Design Manual prepared by NCDEQ. 5-3 Plan Reviews The Land Development process is described on the Land Development website, https://mooresvillenc.gOV/2.'11/Land-Development. Plan reviews and approvals are conducted by Planning Department and Engineering Department staff. A Minimum Requirements checklist is utilized includes requiring engineering documentation and details for stormwater containment including maintenance and operation plan. 5-4 Inventory of Projects with Post -Construction Structural Stormwater Control Measures An inventory of post -construction structural stormwater control measures located within the Town's corporate limits and required by the Phase 11 Post Construction and Illicit Discharge and Connection Ordinance is maintained by the Stormwater Program Specialist. 5.5 Deed Restrictions and Protective Covenants The Town of Mooresville issues plan approval for the final construction plans. Once the construction begins Town staff inspects the project for plan compliance throughout the entire process. Once construction is complete the Town requires as-builts and certifications from the consulting engineer that all infrastructure is built according to plan and subsequently Town standards. Stormwater Operation and Maintenance Agreements, signed by owners of Post Construction Stormwater Control Measures, include a statement that the owner of the SCM agrees to notify the Town of Mooresville of any problems with the system or prior to any changes to the system or responsible party. 5.6 Mechanism to require long-term operation and maintenance of Stormwater Control Measures (SCMs) The Phase 11 Post Construction and Illicit Discharge and Connection Ordinance requires that all owners of post construction structural stormwater control measures installed as a requirement of this ordinance to submit an Operation and Maintenance Agreement to the Engineering Technician. The Operation and Maintenance Agreement requires the owner to continuously operate and maintain the stormwater control and management facilities. The agreements also detail the important maintenance procedures and inspection activities to be performed for the specific type of structural stormwater control measure. Owners of these structural stormwater control measures are also required by the ordinance to submit annual inspection reports performed by a qualified professional as defined by the ordinance. Operation and maintenance 21 plans and annual inspection reports for Town owned and maintained stormwater control measures are maintained by the Stormwater Program Specialist. 5-7 Inspections Procedures for inspections are included in the Operation and Maintenance Agreement signed, recorded and submitted by the owning entity of the structural stormwater control measure. The Town of Mooresville requires that owners of post -construction structural stormwater control measures submit an annual inspection report performed by a qualified professional, as defined by the ordinance, beginning January ist of the calendar year after the date of the as -built certification and each year thereafter on or before March 31st of that calendar year. All inspection reports and any related documentation submitted to the Town of Mooresville is maintained by the Stormwater Program Specialist. 5.8 Educational materials and training for developers The Land Development Process Manual gives an overview of the land development process for plan review. This manual refers to the Land Development Standards for design standards. After plan approval, the developer receives a checklist that details requirements including recording and submitting the Operation and Maintenance Agreement. 5.9 Enforcement The Stormwater Program Specialist tracks information regarding issued notices of violation and any enforcement actions taken including the property owner and location of the structural stormwater control measure. Letters are mailed to the owners of post -construction stormwater control measures for not submitting annual inspection reports by March 31, as required by the Town of Mooresville Post Construction and Illicit Discharge and Connection Ordinance. 01pi Table 2: Post Construction Site Runoff Controls Program BMP Table No. BMP Measurable Goal Implementation Schedule Frequency 5.1 Adequate legal Maintain through ordinance, or other regulatory mechanism, The Phase II Post Review annually authorities adequate legal authorities to meet the objectives of the Post- Construction and and update if Construction Site Runoff Controls Stormwater Management Illicit Discharge and needed. program. Connection Ordinance became The permittee shall have the authority to review designs and effective September proposals for new development and redevelopment to 2,2014. determine whether adequate stormwater control measures will be installed, implemented, and maintained. The permittee shall have the authority to request information such as stormwater plans, inspection reports, monitoring results, and other information deemed necessary to evaluate compliance with the Post -Construction Stormwater Management Program. The permittee shall have the authority to enter private property for the purpose of inspecting at reasonable times any facilities, equipment, practices, or operations related to stormwater discharges to determine whether there is compliance the Post -Construction Stormwater Management Program. 5.2 Strategies which Strategies with include Stormwater Control Measures Post Construction Review annually include Stormwater (SCMs) appropriate for the MS4, include, but are not and Illicit Discharge and update if Control Measures limited to compliance with 15A NCAC 02H Section.l000 and Connection needed. (SCMs) appropriate effectively meets the Post -construction Stormwater Runoff Ordinance became for the MS4 control requirements effective September 2,2014 23 5.3 Plan reviews The permittee shall conduct site plan reviews of all new Implemented during Plan reviews development and redeveloped sites that disturb greater than first year of permit conducted as or equal to one acre (including sites that disturb less than cycle. required one acre that are part of a larger common plan of throughout development or sale). The site plan review shall address permit cycle. how the project applicant meets the performance standards and how the project will ensure long-term maintenance. 5.4 Inventory of projects The permittee shall maintain an inventory of projects with An inventory is Review annually with post- post -construction structural stormwater control measures maintained and update if construction installed and implemented at new development and throughoutthe needed. structural redeveloped sites, including both public and private sector permit cycle. stormwater control sites located within the permittee's corporate limits that are measures covered by its post -construction ordinance requirements. 5.5 Deed Restrictions The permittee shall provide mechanisms such as recorded Implemented as part Review and and Protective deed restrictions and protective covenants that ensure of the plan approval update as Covenants development activities will maintain the project consistent and construction needed. with approved plans. inspection process. 5.6 Provide a The permittee shall implement or require an operation and Operation and Operation and mechanism to maintenance plan for the long-term operation of the SCMs Maintenance Maintenance require long-term required by the program. The operation and maintenance Agreements and Plans are operation and plan shall require the owner of each SCM to perform and annual inspection required to be maintenance of maintain a record of annual inspections of each SCM. reports are required submitted upon Stormwater Control Annual inspection of permitted SCMs shall be performed per the Post as -built Measures (SCMs) by a qualified professional. Construction and certification. Illicit Discharge and Annual Connection inspection Ordinance, which reports are became effective required to be September 2, 2014 submitted by March 31-t Of each year. 24 5.7 Inspections To ensure that all stormwater control measures meet the Written procedures Written permittee's performance standards and are being per the Post procedures will maintained pursuant to the maintenance agreement, the Construction and be reviewed permittee shall develop and implement a written inspection Illicit Discharge and annually and program for structural stormwater controls installed Connection updated if pursuant to the permittee's post -construction program. Ordinance, effective needed. September 2, 2014. Inspection The permittee shall document and maintain records of Inspection records records inspections, findings and enforcement actions and make submitted them available for review by the permitting authority. annually to the Town will be maintained continuously throughout permit cycle. 5.8 Educational The permittee shall make available through paper or Information Information and materials and electronic means, ordinances, post -construction available throughout materials will be training for requirements, design standards checklist, and other the permit cycle. available to developers materials appropriate for developers. New materials may developers be developed by the permittee, or the permittee may use throughout the materials adopted from other programs and adapted to the permit cycle. permittee's new development and redevelopment program. 5.9 Enforcement The permittee shall track the issuance of notices of violation Implemented in year Enforcement will and enforcement actions. This mechanism shall include the one of the permit be tracked and ability to identify chronic violators for initiation of actions cycle. documented to reduce noncompliance. continuously throughout the permit cycle. 25 Section 6: Good Housekeeping and Pollution Prevention for Municipal Operations The Town of Mooresville implements a Good Housekeeping and Pollution Prevention Program for municipal operations with the goal of preventing or reducing pollutant runoff from municipal operations. This program includes employee training to prevent and reduce stormwater pollution from municipal activities. The Stormwater Program Specialist is responsible for implementation and the program is funded through the Stormwater Utility Fee. The following sections discuss the BMPs implemented to fulfill these requirements. See Table for the measurable goals, frequency and implementation schedule for each BMP. 6.1 Inventory of municipally owned or operated facilities An inventory of all municipally owned or operated facilities that have the potential to generate polluted stormwater runoff has been developed and is maintained by the Stormwater Program Specialist. 6.2 Operation and Maintenance (O&M) for municipally owned or operated facilities All municipally owned or operated facilities identified by the inventory as having the potential to generate polluted stormwater runoff have a Stormwater Operation and Maintenance (O&M) Plan. Stormwater O&M Plans detail the stormwater pollution prevention and good housekeeping practices utilized by the employees at that facility. Each Stormwater O&M Plan also details the frequency of facility inspections and the regular maintenance activities. Stormwater O&M Plans for each facility are located either at the facility or in the Stormwater Program Specialist's office if it is impractical to keep the plan at the facility. Operation and Maintenance Plans for each facility are reviewed periodically and amended as needed. Amendments to the Operation and Maintenance Plans are documented in the Operation and Maintenance Plan for the facility. 6-3 Spill Response Procedures The Stormwater O&M Plan for each facility contains Spill Response Procedures and a Spill Response Log to be completed in the event of a spill. 6-4 Streets, roads, and public parking lots maintenance The Town of Mooresville implements BMPs to reduce polluted stormwater runoff from municipally -owned streets, roads, and public parking lots. The Town of Mooresville utilizes a street sweeper to clean municipal streets and roads regularly and parking lots as needed. The Stormwater Program Specialist is to track the streets swept monthly by the street sweeper. The Town of Mooresville will evaluate the effectiveness of this BMP based off the number of streets swept and quantity of pollutants removed. Am,, 6.5 Operation and Maintenance (O&M) for municipally -owned or maintained catch basins and conveyance systems The stormwater maintenance staff is responsible for maintaining the municipally -owned and maintained catch basins and conveyance systems. Stormwater maintenance staff conducts routine maintenance as well as respond to maintenance requests from citizens. The Town of Mooresville also issues contracts to outside contractors for improvements to existing municipally owned drainage systems that cannot be handled by Town of Mooresville staff or are part of a larger infrastructure improvement project. 6.6 Identify municipally owned or maintained structural stormwater controls An inventory of all municipally owned or maintained structural stormwater controls installed for compliance with the Town of Mooresville Post Construction and Illicit Discharge and Connection Ordinance will be maintained by the Stormwater Program Specialist. The list of municipally -owned stormwater control measures is updated periodically as new stormwater control measures are constructed. 6.7 O&M for municipally -owned or maintained structural stormwater controls All municipally owned or maintained structural stormwater controls installed for compliance with the Town of Mooresville Post Construction and Illicit Discharge and Connection Ordinance will be operated and maintained in accordance with the guidelines in the NCDEQ Stormwater Design Manual at the time of construction and according to the engineered plans for the control measure. These structural stormwater control measures will be regularly inspected by the Stormwater Program Specialist, Stormwater Maintenance Supervisor, Engineering Technician, or their designee. Inspection and maintenance records will be maintained by the Stormwater Program Specialist. 6.8 Pesticide, Herbicide and Fertilizer Application Management All employees who are required to apply pesticide, herbicide and/or fertilizer as part of their regular duties possess the proper training and certifications to do so. Records of the necessary training and certifications for each employee are maintained by the employee's supervisor as part of the employee's personnel file. 6.9 Staff Training Employees involved in implementing pollution prevention and good housekeeping practices are to receive training from the Stormwater Program Specialist at least once per year, every year of the permit cycle. Training will cover the stormwater pollution prevention and good housekeeping practices utilized at that employee's facility or stormwater pollution prevention information to be used while performing regular duties. Training is to be performed by the Stormwater Program Specialist. All new employees that attend new employee orientation receive stormwater training that discusses general stormwater information such as the definition of stormwater, stormwater 27 pollution, and what employees can do to prevent or minimize stormwater pollution. This training is conducted either through a training video or a handout. 6.io Prevent or Minimize Contamination of Stormwater Runoff from all areas used for Vehicle and Equipment Cleaning Employees are encouraged to use the vehicle wash bay located in the Fleet Services Building at the Public Services Operations Facility. This vehicle wash bay drains to an oil/water separator and then to the sanitary sewer system. If the vehicle cannot be washed in the vehicle wash bay, employees are encouraged to wash their vehicle at a commercial car wash facility. Fire Station vehicles are washed per the instructions in the Fire Administration and Operations Department Apparatus Washing General Order. This General Order requires that Mooresville Fire Rescue limit the amount of water discharged during cleaning or washing of vehicles, use a hose with a low GPM discharge of water, and not discharge chemical of any type into storm drains or environment. ML-41 Table lo: Good Housekeeping and Pollution Prevention Program BMP Table No. BMP Measurable Goal Implementation Frequency Schedule 6.1 Inventory of The permittee shall maintain a current inventory of Inventory is maintained Review annually and municipally owned or facilities and operations owned and operated by the throughout the permit update if needed. operated facilities permittee with the potential for generating polluted cycle. stormwater runoff. 6.2 Operation and The permittee shall maintain and implement, evaluate Implemented in first Review annually and Maintenance (O&M) annually and update as necessary an Operation and year of permit cycle. update if needed. for municipally Maintenance (O&M) program for municipal owned and owned or operated operated facilities with the potential for generating facilities polluted stormwater runoff. The O&M program shall specify the frequency of inspections and routine maintenance requirements. 6.3 Spill Response The permittee shall have written spill response Implemented in first Review annually and Procedures procedures for municipal operations. year of permit cycle. update if needed. 6.4 Streets, roads, and The permittee shall evaluate existing and new BMPs Implemented in first BMPs are evaluated public parking lots annually that reduce polluted stormwater runoff from year of permit cycle. annually and updated maintenance municipally -owned streets, roads, and public parking if needed. lots within their corporate limits. The permittee must evaluate the effectiveness of these BMPs based on cost and the estimated quantity of pollutants removed. 6.5 Operation and The permittee shall develop and implement an O&M Implemented in first Review annually and Maintenance (O&M) program for the stormwater sewer system including year of permit cycle. update if needed. for municipally- catch basins and conveyance systems that it owns and owned or maintained maintains. catch basins and conveyance systems 29 6.6 Identify municipally The permittee shall maintain a current inventory of Implemented in first Reviewed and updated owned or maintained municipally -owned or operated structural stormwater year of permit cycle. as needed. structural stormwater controls installed for compliance with the permittee's controls post -construction ordinance. 6.7 O&M for municipally- The permittee shall maintain and implement an O&M Implemented in first Review annually and owned or maintained program for municipally -owned or maintained structural year of permit cycle. update if needed. structural stormwater stormwater controls installed for compliance with the controls permittee's post -construction ordinance. The O&M program shall specify the frequency of inspections and routine maintenance requirements. The permittee shall inspect and maintain municipally - owned or maintained structural stormwater controls in accordance with the schedule developed by permittee. The permittee shall document inspections and maintenance of all municipally -owned or maintained structural stormwater controls. 6.8 Pesticide, Herbicide The permittee shall ensure municipal employees and Implemented in first All training and and Fertilizer contractors are properly trained and all permits, year of permit cycle. certifications are Application certifications, and other measures for applicators are continuously Management. followed. maintained and needed. 6.9 Staff training The permittee shall implement an employee training Implemented in first Staff training for the program for employees involved in implementing year of permit cycle. employees described pollution prevention and good housekeeping practices. here will be conducted at least once per year. 6.10 Prevent or Minimize The permittee shall describe and implement measures to Implemented in year Review annually and Contamination of prevent or minimize contamination of the stormwater one of permit cycle. update if needed. Stormwater Runoff runoff from all areas used for vehicle and equipment from all areas used cleaning. for Vehicle and Equipment Cleaning 30