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HomeMy WebLinkAboutNCS000465_Approved SWMP_20230807 Morrisville Live connected. Live well. Stormwater Management Plan Town of Morrisville NCS000465 March 2, 2023 Table of Contents Part1: Introduction .....................................................................................................................................1 Part2: Certification .....................................................................................................................................2 Part3: MS4 information...............................................................................................................................3 3.1 Permitted MS4 Area.......................................................................................................................3 3.2 Existing MS4 Mapping ...................................................................................................................4 3.3 Receiving Waters ............................................................................................................................5 3.4 MS4 Interconnection......................................................................................................................7 3.5 Total Maximum Daily Loads (TMDLs).........................................................................................7 3.6 Endangered and Threatened Species and Critical Habitat.....................................................7 3.7 Industrial Facility Discharges........................................................................................................8 3.8 Non-Stormwater Discharges ........................................................................................................9 3.9 Target Pollutants and Sources................................................................................................... 11 Part 4: Stormwater Management Program Administration .............................................................. 12 4.1 Organizational Structure............................................................................................................. 12 4.2 Program Funding and Budget.................................................................................................... 14 4.3 Shared Responsibility.................................................................................................................. 14 4.4 Co-Permittees............................................................................................................................... 14 4.5 Measurable Goals for Program Administration...................................................................... 15 Part 5: Public Education and Outreach Program............................................................................... 17 Part 6: Public Involvement and Participation Program .................................................................... 22 Part 7: Illicit Discharge Detection and Elimination Program........................................................... 24 Part 8: Construction Site Runoff Control Program ........................................................................... 29 Part 9: Post-Construction Site Runoff Control Program.................................................................. 31 Part 10:Pollution Prevention and Good Housekeeping Programs..................................................42 Tables Table 1: Summary of Current MS4 Mapping............................................................................................4 Table 2: Summary of MS4 Receiving Waters ...........................................................................................6 Table 3: Summary of Approved TMDLs ....................................................................................................7 Table 4: Potential Federally Listed Species/Habitat Impacted by Surface Water Quality..............8 Table 5: NPDES Stormwater Permitted Industrial Facilities..................................................................8 Table 6: Non-Stormwater Discharges..................................................................................................... 10 Table 7: Summary of Target Pollutants and Sources ........................................................................... 11 Table 8: Summary of Responsible Parties .............................................................................................. 13 Table 9: Shared Responsibilities............................................................................................................... 14 Table 10: Co-Permittee Contact Information........................................................................................ 14 Table 11: Program Administration BMPs............................................................................................... 15 Table 12: Summary of Target Pollutants and Audiences .................................................................... 17 Table 13: Public Education and Outreach BMPs.................................................................................. 18 Table 14: Public Involvement and Participation BMPs........................................................................ 22 Table 15: Illicit Discharge Detection and Elimination BMPs.............................................................. 24 Table 16: Qualifying Alternative Program Components for Construction Site.............................. 29 Table 17: Construction Site Runoff Control BMPs .............................................................................. 29 Table 18: Qualifying Alternative Program(s) for Post-Construction Site Runoff Control Program ......................................................................................................................................................................... 31 Table 19: Summary of Existing Post-Construction Program Elements............................................ 33 Table 20: Post Construction Site Runoff Control BMPs..................................................................... 33 Table 21: Pollution Prevention and Good Housekeeping BMPs.......................................................42 Figures Figure 1: Town Limits, ETJ, and River Basins............................................................................................3 Figure 2: Town of Morrisville Receiving Waters......................................................................................5 Figure 3: Town of Morrisville Organizational Structure...................................................................... 12 Figure 4: Town of Morrisville Post-Construction Programs............................................................... 32 Part 1: Introduction The purpose of this Stormwater Management Plan and Nutrient Management Strategy (SWMP- NMS) is to establish and define the means by which the Town of Morrisville will comply with its National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS4) Permit, the requirements of the Neuse Nutrient Stormwater Rule (15A NCAC 02B .0711), 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 SWMP-NMS identifies the specific elements and minimum measures that the Town of Morrisville will develop, implement, enforce, evaluate, and report to the North Carolina Department of Environmental Quality(NCDEQ) Division of Energy, Minerals and Land Resources (DEMLR) in order to comply with the MS4 Permit number NCS000465, as issued by NCDEQ. This permit covers activities associated with the discharge of stormwater and nutrients from the MS4 as owned and operated by the Town of Morrisville and located within the corporate limits of the Town of Morrisville. This SWMP-NMS also identifies the specific elements and minimum measures that the Town of Morrisville will develop, implement, enforce, evaluate, and report to the NCDEQ Division of Water Resources (DWR) to comply with the requirements of the Neuse Rule. In preparing this SWMP-NMS, the Town of Morrisville has evaluated its MS4 and the permit requirements to develop a comprehensive 5-year SWMP-NMS that will meet the community's needs, address local water quality issues, and provide the minimum measures necessary to comply with the permit. The SWMP-NMS will be evaluated and updated annually to ensure that the elements and minimum measures it contains continue to adequately provide for permit and Neuse Rule compliance and the community's needs. Once the SWMP-NMS is approved by NCDEQ and the Environmental Management Commission (EMC), all provisions contained and referenced in this SWMP-NMS, along with any approved modifications of the SWMP-NMS, are incorporated by reference into the permit and become enforceable parts of the permit. Any major changes to the approved SWMP-NMS will require resubmittal, review, and approval by NCDEQ, and may require a new public comment period depending on the nature of the changes. NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 1 Part 2:Certification By my signature below I hereby certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations. I am also aware that the contents of this document shall become an enforceable part of the NPDES MS4 Permit, and that both the Division and the Environmental Protection Agency have NPDES MS4 Permit compliance and enforcement authority. ❑ I am a ranking elected official. M I am a principal executive officer for the permitted MS4. ❑ 1 am a duly authorized representative for the permitted MS4 and have attached the authorization made in writing by a principal executive officer or ranking elected official which specifies me as (check one): ❑ A specific individual having overall responsibility for stormwater matters. ❑ A specific position having overall responsibility for stormwater matters. Signature: Print Name: Martha Paige Title: Town Manager PI Aia Signed this3___day of 20?3- _. NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 2 Part 3: MS4 information 3.1 Permitted MS4 Area This SWMP applies throughout the corporate limits of the Town of Morrisville, including all regulated activities associated with the discharge of stormwater from the MS4. The map below shows the corporate limits of the Town of Morrisville and the Extraterritorial Jurisdiction (ETJ), as of the date of this document. As the Town is located in both the Neuse and Cape Fear River basins, the Local Neuse Nutrient Management Strategy (Neuse Local Program) applies to the portions of the town located in the Neuse River Basin. Legend h N�YSON Morrisville Limits ' Il Fri -Basin Fear River Basinsin -upper Neuse•Neuse n Rivrr Basin . --tom_;'•, g _ avir -Canoe n! .:i.RT-ENTER - J 1 0 0.25 0.5 1 1.5 2 Miles r �' `yLL4►►►tititi+++���JJJJ Figure 1: Town Limits, ETJ, and River Basins NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 3 3.2 Existing MS4 Mapping Runoff from most of the earlier development(prior to 1999) in the Town flows directly to surface waters without any form of treatment. For developments since implementation of the Town's 1999 stormwater ordinance and first Phase II permit in 2005, runoff flows to various detention systems and other structural Stormwater Control Measures(SCMs) prior to entering the receiving streams. The current MS4 mapping program includes the location of system components (including inlets, outfalls, pipes, and culverts), SCMs, waterbodies, major basins, and subbasins. Pipe Condition, flow direction, and pipe size are also included. This Publicly available information can be found online on the Town of Morrisville Stormwater Map. Mapping of the Town's storm system was updated in 2021. The Town estimates that approximately 99% of the MS4 area is mapped. Table 1: Summary of Current MS4 Mapping Percent of MS4 Area Mapped 99 No. of Major Outfalls* Mapped 74 total** *An outfall is a point where the MS4 discharges from a pipe or other conveyance(e.g.,a ditch) directly into surface waters. Major outfalls are required to be mapped to meet permit requirements.A major outfall is a 36-inch diameter pipe or discharge from a drainage area > 50-acres; and for industrial zoned areas a 12-inch diameter pipe or a drainage area > 2-acres. NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 4 3.3 Receiving Waters The Town of Morrisville MS4 is located within the Upper Neuse - Neuse and Haw - Cape Fear River Basins and discharges directly into receiving waters as listed in Table 2 below. Applicable water quality standards listed below are compiled from the following NCDEQ sources: o Waterbody Classification Map o Impaired Waters Map o TMDL Map o Most recent NCDEQ Final 303(d) List Legend CMMorrisville Limits Impaired streams -FTJ —Data Inconclusive ®Haw-Cape Fear Impaired River Basin Upper Neuse- �No Dares ®Ne—River Baslrk l�er• sc " i y Z� 6, 0 0.26 0.5 1 1.5 2 Miles - 1 Figure 2: Town of Morrisville Receiving Waters NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 5 Table 2: Summary of MS4 Receiving Waters Receiving Water Name Stream Index /AU Water Quality 303(d) Listed Parameter(s) Number Classification of Interest Haw - Cape Fear River Basin (Jordan Lake) Kit Creek 16-41-1-17-2-(0.3) C; NSW N/A Kit Creek 16-41-1-17-2-(0.7) WS-IV; NSW N/A Upper Neuse - Neuse River Basin Brier Creek 27-33-4 C; NSW PCB (Advisory, FC, NC) Stirrup Iron Creek 27-33-4-2 C; NSW N/A Coles Branch 27-33-3 C; NSW N/A Crabtree Creek 27-33-(1) C; NSW Benthos (Nar, AL, FW) C: Class C (Fishable/Swimmable Waters) NSW: Nutrient Sensitive Water WS-IV: Water Supply Watershed, Class IV PCB: Polychlorinated Biphenyl (PCB) Fish Tissue Advisory FC, NC: Fish Consumption, North Carolina Standard Benthos: Impaired Benthic Microorganism Community Nar: Narrative Standard AL: Aquatic Life FW: Fresh Waters The above Data is from 2022 NC Category 5 Assessments "2022 Final 303(d) List" and NC Surface Water Classifications Map. From the 2022 303(d) Listing and Delisting Methodology for: • Benthos: "Narrative criterion: Narrative criterion: Waters shall be suitable for aquatic life propagation and maintenance of biological integrity. NC uses benthic and fish community data to assess biological integrity. Biological integrity means the ability of an aquatic ecosystem to support and maintain a balanced and indigenous community of organisms having species composition, diversity, population densities and functional organization similar to that of reference conditions." • Fish Consumption: "Fish consumption was assessed based on site-specific fish consumption advisories developed using fish tissue data. Advisories and advice are developed by DHHS using fish tissue data collected by DWR and others. See http://epi.publichealth.nc.gov/fish/current.html for all advice and advisories." The Town of Morrisville utilizes Public Education and Outreach BMPs - to provide information on water quality impairments in the Neuse River Basin and PCBs and nitrogen are target pollutants. The Neuse River Subbasin Plan for Crabtree and Brier Creeks and Protecting Water Quality supplement are used to guide BMPs. NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 6 3.4 MS4 Interconnection The Town of Morrisville MS4 is interconnected with another regulated MS4 and receives/discharges stormwater into the Town of Cary. The number of interconnections leaving the Town of Morrisville MS4 have not been estimated; however, locations of outfalls within the Town of Morrisville ETJ are on the MS4 map and are part of the IDDE and MS4 inspections. The MS4 also interconnects with the statewide NCDOT MS4 and includes a. The interconnection is receiving stormwater from the NCDOT MS4. The number of interconnections is unknown. b. The interconnection is discharging stormwater into the NCDOT MS4. The number of interconnections is unknown. c. The Town of Morrisville MS4 mapping does include NCDOT MS4 outfalls. 3.5 Total Maximum Daily Loads (TMDLs) The TMDL(s) listed in Table 3 below have been approved within the MS4 area, as determined by the map and list provided on the NCDEQ Modeling & Assessment Unit web page. The table also indicates whether the approved TMDL has a specific stormwater Waste Load Allocation (WLA) for any watershed directly receiving discharges from the permitted MS4, and whether a Water Quality Recovery Program has been implemented to address the WLA. The Statewide TMDL for mercury does not require any actions by the NPDES Stormwater Permittee because most mercury in stormwater comes from atmospheric deposition, but the Town utilizes BMPs - to provide information to the public. While the Neuse River has a TMDL for nitrogen, the Town of Morrisville discharges to tributaries of the Neuse that do not have TMDLs. The Town of Morrisville utilizes Public Education and Outreach BMPs - to provide information on nitrogen in the Neuse River Basin. This SWMP-NMS also includes BMPs to implement the Neuse Local Program for the updated Neuse River Rules, which were adopted in April 2021. Table 3: Summary of Approved TMDLs TMDL Pollutant(s) of Stormwater Water Quality Water Body Name Concern Waste Load Recovery Allocation (Y/N) Program (Y/N) Statewide Mercury N N Neuse River Nitrogen N N 3.6 Endangered and Threatened Species and Critical Habitat NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 7 Significant populations of threatened or endangered species and/or critical habitat may be identified within the regulated MS4 urbanized area. Based upon a review of the Endangered and Threatened Species and Species of Concern by County for North Carolina Map (no longer available online)and Listed species believe to or known to occur in North Carolina list as provided by the U.S. Fish and Wildlife Service, the species listed in Table 4 have the potential to occur within the regulated MS4 urbanized area. Of those species listed,Table 4 summarizes the species that may be significantly impacted by the quality of surface waters within their habitat. Table 4: Potential Federally Listed Species/Habitat Impacted by Surface Water Quality Scientific Name Common name Species Group Federal Listing Status Holioeetus leucocepholus Bald eagle Vertebrate BGPA Noturus furiosus Carolina madtom Vertebrate ARS Necturus lewisi Neuse River Vertebrate ARS waterdog Fusconoia mosoni Atlantic pigtoe Invertebrate ARS Alasmidonto heterodon Dwarf Invertebrate E wedgemussel Losmigono subviridis Green floater Invertebrate ARS Lindera subcoriacea Bog spicebush Vascular Plant ARS BGPA: Bald And Golden Eagle Protection Act ARS: At Risk Species E: Endangered 3.7 Industrial Facility Discharges The Town of Morrisville MS4 jurisdictional area includes the following industrial facilities which hold NPDES Industrial Stormwater Permits, as determined from the NCDEQ Maps & Permit Data web page. Table 5: NPDES Stormwater Permitted Industrial Facilities Permit Number Facility Name NCG060408 Amazon.com Services LLC - DRT9 NCG070104 Adams Products Co- Morrisville NCG080147 Waste Management of Raleigh Durham NCG080391 Averitt Express Inc - Morrisville NCG080476 XPO Logistics Freight, Inc. - NRD NCG080601 Triangle Transit Authority - Bus Maintenance Facility NCG080659 UPS Ground Freight, Inc.- Morrisville NCG080974 Old Dominion Freight Line Inc - DRM NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 8 Permit Number Facility Name NCG140266 Thomas Concrete Of Carolina Inc - Morrisville NCG140307 Concrete Supply Co-Morrisville Plant NCG140469 McCarthy RDU Concrete Batch Plant NCG150067 NCNG Morrisville AASF #1 NCGNE0059 Airborne Express-RDU NCGNE0110 AAA Cooper Transport NCGNE0247 DHL Express NCGNE0298 Southern Staircase NCGNE0356 Estes Express Lines-Morrisville NCGNE0447 Tekelec NCGNE0628 YRC, Inc.-Morrisville NCGNE0704 American Greenz NCGNE0737 Eaton Satellite NCGNE0931 Eaton Corp - Raleigh CMSC NCGNE0949 Tekelec - Morrisville NCGNE1123 Classic Graphics NCGNE1129 American Greenz, Inc. NCGNE1379 HZO Inc. NCGNE1405 Integrated DNA Technologies - RTP NCGNE1446 Circle Graphics - Innovation Ave The Town of Morrisville utilizes Public Education and Outreach BMPs - to provide information to commercial/industrial audiences. Industrial outfalls are also inspected as part of the Illicit Discharge Detection and Elimination program BMP . Non-Stormwater Discharges The water quality impacts of non-stormwater discharges have been evaluated by the Town of Morrisville as summarized in Table 6 below. The unpermitted non-stormwater flows listed as incidental do not significantly impact water quality. The Town of Morrisville has evaluated residential and charity car washing and street washing for possible significant water quality impacts. NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 9 Wash water associated with car washing that does not contain detergents or does not discharge directly into the MS4 is considered incidental. However, these types of non-stormwater discharges that do contain detergents have been evaluated by the Town of Morrisville to determine whether they may significantly impact water quality. They were determined to be a possible cause of water quality impacts and will be addressed through Public Education and Outreach BMPs -. Street sweeping in Morrisville utilizes a dry street sweeper and therefore street wash water is not considered a possible water quality impact. The Division has not required that other non-stormwater flows be specifically controlled by the Town of Morrisville. Table 6: Non-Stormwater Discharges Non-Stormwater Discharge Water Quality Impacts Water Line And Fire Hydrant Flushing Incidental Landscape Irrigation Incidental Diverted Stream Flows Incidental Rising Groundwater Incidental Uncontaminated Groundwater Infiltration Incidental Uncontaminated Pumped Groundwater Incidental Uncontaminated Potable Water Sources Incidental Foundation Drains Incidental Air Conditioning Condensate Incidental Irrigation Waters Incidental Springs Incidental Water From Crawl Space Pumps Incidental Footing Drains Incidental Lawn Watering Incidental Residential And Charity Car Washing Possible Flows From Riparian Habitats And Wetlands Incidental Dechlorinated Swimming Pool Discharges Incidental Street Wash Water Incidental Flows From Firefighting Activities Incidental NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 10 3.9 Target Pollutants and Sources In addition to possible non-stormwater discharges identified above, the Town of Morrisville is not aware of other significant water quality issues within the permitted MS4 area. Table 7 below summarizes the water quality pollutants identified throughout Part 3 of this SWMP-NMS, the likely activities/sources/targeted audiences attributed to each pollutant and identifies the associated SWMP-NMS program(s) that address each. In addition, the Town of Morrisville has evaluated schools, homeowners and businesses as target audiences that are likely to have significant stormwater impacts. Table 7: Summary of Target Pollutants and Sources Target Pollutant(s) Likely Source(s)/Target SWMP-NMS Program Addressing Audience(s) Target Pollutants)/Audience(s) Residential, Commercial/ Public Education & Outreach, Public Litter/Yard Waste Industrial, Schools, Involvement & Participation, pollution Prevention and Good Municipal Operations Housekeeping PCBs Residential, Commercial/ Public Education & Outreach, Illicit Industrial Discharge Detection and Elimination Residential, Commercial/ Public Education & Outreach, Public Nitrogen Industrial, Municipal Involvement & Participation, pollution Prevention and Good Operations Housekeeping Public Education & Outreach, Construction, Commercial/ Construction Site Runoff Control, Sediment Industrial, Municipal Post-Construction Site Runoff Operations Control, Pollution Prevention and Good Housekeeping Residential, Commercial/ Public Education & Outreach, Illicit Discharge Detection and Elimination, Car Washing Industrial, Schools, pollution Prevention and Good Municipal Operations Housekeeping Fecal Coliform Sewer Leaks, Failing Septic Public Education & Outreach, Illicit Systems, Pet Waste Discharge Detection and Elimination Fertilizer/Pesticides/ Residential, Commercial/ Public Education & Outreach, Herbicides Industrial, Municipal Pollution Prevention and Good Operations Housekeeping Illicit Discharge/Illegal Residential, Commercial/ Public Education & Outreach, Illicit Dumping/Improper Industrial, Municipal Discharge Detection and Elimination, pollution Prevention and Good Disposal of Waste Operations Housekeeping NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 11 Part 4: Stormwater Management Program Administration 4.1 Organizational Structure The Town of Morrisville Stormwater Program is implemented through the Engineering Department overseen by the Town Engineer. The Stormwater Engineering Manager is responsible for day-to-day implementation of the Program. Figure 3 shows the organizational structure of the City and Table 8 provides a summary of the responsible positions for specific SWMP-NMS components. Town of�larrlsvipe NPDES Pdase II Stormwater Permit Organimioa Chart Mayor&Coundl Ttrvm llttorney Town Manager Town Berk Rsst� Engineering Puhgc Works nepartment Department (Town Engineer) (Diredwl seormwatar Engineering Manager (SW AtlminlstrMor� Prognam Enviranmental Stamnvater Engineer' Impkeme tatlon8 Specialist Assessment Public Education& outreach U.-water Education Partnership iCW EPi Public Invnivement& Participation ', MESC Committee . Illicit Discharge Detection& Ellminatlo. construction site Runoff Controls Wake County Erosion &Sediment Cortrol P.,vCo.r.ct r Site Runoff Controls Pollution Prevention& Good Housekeeping for Municipal operations it:,..DE, Ol i Figure 3: Town of Morrisville Organizational Structure NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 12 Table 8: Summary of Responsible Parties SWMP-NMS Responsible Position Staff Name Department Component Stormwater Program Stormwater Engineering Ben Mills, P.E. Engineering Administration Manager SWMP-NMS Stormwater Engineering Ben Mills, P.E. Engineering Management Manager Public Education and Environmental Specialist Tony Victor Engineering Outreach Public Involvement Environmental Specialist Tony Victor Engineering and Participation Illicit Discharge Detection and Environmental Specialist Tony Victor Engineering Elimination Construction Site Wake County Runoff Control Sedimentation and Sean Springer Wake County Erosion Control Post-Construction Stormwater Stormwater Engineer Brad Gagnon Engineering Management Pollution Prevention/Good Environmental Specialist Tony Victor Engineering Housekeeping for Municipal Operations Municipal Facilities Operation and Environmental Specialist Tony Victor Engineering Maintenance Program Spill Response Environmental Specialist Tony Victor Engineering Program MS4 Operation and Stormwater Engineering M Ben Mills, P.E. Engineering —Maintenance Program Manager Municipal SCM Stormwater Engineering Operation and Manager Ben Mills, P.E. Engineering Maintenance Program Pesticide, Herbicide, and Fertilizer Environmental Specialist Tony Victor Engineering Management Program Vehicle and Equipment Stormwater Engineering Ben Mills, P.E. Engineering Cleaning Program Manager Pavement Stormwater Engineering Ben Mills, P.E. Engineering Management Program Manager Total Maximum Daily Environmental Specialist Tony Victor Engineering Load (TMDL) NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 13 4.2 Program Funding and Budget In accordance with the issued permit, the Town of Morrisville shall maintain adequate funding and staffing to implement and manage the provisions of the SWMP-NMS and comply with the requirements of the NPDES MS4 Permit. The budget includes the permit administration and compliance fee, which is billed by the Division annually. The stormwater program is funded by a stormwater utility fee. The annual budget is approximately $830,000. 4.3 Shared Responsibility The Town of Morrisville will share the responsibility to implement the following minimum control measures, which are at least as stringent as the corresponding NPDES MS4 Permit requirement. The Town of Morrisville remains responsible for compliance if the other entity fails to perform the permit obligation and may be subject to enforcement action if neither the Town of Morrisville nor the other entity fully performs the permit obligation. Table 9 below summarizes who will be implementing the component, what the component program is called, the specific SWMP-NMS BMP or permit requirement that is being met by the shared responsibility, and whether or not a legal agreement to share responsibility is in place. Table 9: Shared Responsibilities SWMP-NMS BMP or Permit Implementing Entity and Legal Agreement Requirement Program Name (Y/N) 3.2.2 and 3.2.4 Outreach to Target Clean Water Education Audiences, 3.3.2 Volunteer Partnership (CWEP) Y Opportunities 3.5.1 - 3.5.4 Wake County Wake County Sedimentation Y Delegated SPCA Program and Erosion Control 4.4 Co-Permittees The are no other entities applying for co-permittee status under the NPDES MS4 permit number NCS000465 for the Town of Morrisville. Table 10 summarizes contact information for each co- permittee. Table 10: Co-Permittee Contact Information Co-Permittee MS4 Interlocal Agreement Name Contact Person Phone and E-Mail (Y/N) N/A NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 14 4.5 Measurable Goals for Program Administration The Town of Morrisville will manage and report the following Best Management Practices(BM Ps) for the administration of the Stormwater Management Program. Table 11: Program Administration BMPs 2.1.2 Program Implementation Permit Measures to evaluate the performance and effectiveness of the SWMP-NMS program components at Ref. least annually. Results shall be used by the permittee to modify the program components as necessary to accomplish the intent of the Stormwater Program. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Annual Self-Assessment Evaluate the performance and effectiveness of the program 1. Prepare, conduct, components at least annually. and document an 1. Annually - Permit 1 Results shall be used to modify the program components as annual evaluation of Years 1 - 5 1. Yes/No necessary to accomplish the the program intent of the Stormwater components Program Permit 1.6: Permit Renewal Application Ref. Measures to submit a permit renewal application no later than 180 days prior to the expiration date of the NPDES MS4 permit. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Permit Renewal Application 1. Draft SWMP- NMS applicable to the proceeding 5 1. Permit Year 5 1. Yes/No years following permit re-issuance 2. Certify the Submit a permit renewal stormwater permit 2• application package and Draft renewal application SWMP-NMS no later than 180 (permit renewal days prior to permit expiration application form and 2. Date of permit Draft SWMP-NMS 2. Permit Year 5 renewal application for the next 5-year submittal permit cycle) and submit to NCDEQ at least 180 days prior to permit expiration NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 15 Table 11: Program Administration BMPs Permit Neuse Local Program:Adequate Funding and Staffing Ref. Local Program activities to determine and maintain adequate funding and staffing to implement and manage the provisions of the Local Program and meet all requirements of the Neuse Stormwater Rules. BMP A B C D No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting Implementation Metric Funding and Staffing Evaluation Review of Annual Self- 1. Determine Assessment to determine if whether additional 3 funding or staff time more funding or staffing is are required to meet 1. Annually - Permit 1. Yes/No needed to implement the gMPs and if Neuse Years 1 - 5 SWMP-NMS or the Neuse Local Program Local Program changes are needed 2.2.2 Minimum Control Measures Permit The Permittee shall maintain, and make available to the Division upon request, written procedures for Ref. implementing the six minimum control measures.Written procedures shall identify specific action steps, schedules, resources, and responsibilities for implementing the MCMs. Written procedures can be free standing or, where appropriate, integrated into the Stormwater Management Plan A B C D BMP No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Minimum Control Measures Create written procedures for 1. Create all required 1. Permit Year 1 1. Yes/No implementing the six minimum written procedures control measures. They shall 4. identify specific action steps, 2. Review all written schedules, resources, and 2. Annually - Permit responsibilities for programs and Years 2-5 2. Yes/No implementing the MCMs update as needed NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 16 Part 5: Public Education and Outreach Program The Town of Morrisville will implement a Public Education and Outreach Program to distribute educational materials to the community or conduct equivalent outreach activities about the impacts of storm water discharges on water bodies and steps the public can take to reduce pollutants in storm water runoff. The target audiences and identified pollutants listed in Part 3.9 of this SWMP-NMS, which will be addressed by the Public Education and Outreach Program, are summarized in Table 12 below. In addition, the Town of Morrisville is required to inform businesses and the general public of the hazards associated with illicit discharges, illegal dumping, and improper disposal of waste. Table 12: Summary of Target Pollutants and Audiences Target Pollutants/Sources Target Audience(s) Litter/Yard Waste Residential, Commercial/ Industrial, Schools, Municipal Operations PCBs Residential, Commercial/ Industrial Nitrogen Residential, Commercial/ Industrial, Municipal Operations Sediment Construction, Commercial/ Industrial, Municipal Operations Car Washing Residential, Commercial/ Industrial, Schools, Municipal Operations Fecal Coliform Sanitary Sewer Owners, Septic System Owners, Pet Owners Fertilizer/Pesticides/ Herbicides Residential, Commercial/ Industrial, Municipal Operations Illicit Discharge/Illegal Dumping/Improper Disposal of Residential, Commercial/ Industrial, Municipal Operations Waste The Town of Morrisville will manage, implement, and report the following Public Education and Outreach BMPs. NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 17 Table 13: Public Education and Outreach BMPs 3.2.2 and 3.2.4: Outreach to Targeted Audiences Measures to identify the specific elements and implementation of a Public Education and Outreach Program to share educational materials to the community or conduct equivalent outreach activities Permit about the impacts of stormwater discharges on water bodies and how the public can reduce pollutants Ref. in stormwater runoff.The permittee shall provide educational information to identified target audiences on pollutants/sources identified in Table 12 above and shall document the extent of exposure of each media, event, or activity, including those elements implemented locally or through a cooperative agreement. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Partnership with Clean Water Education Partnership(CWEP) 1. Maintain legal agreement with CWEP and review compliance with 1. Yes/No/Status permit requirements 1. Annually - Permit and report if revision as well as reviewing Years 1 - 5 to determine if is required target pollutants or audiences should be revised Continue to engage with CWEP for education and 2. Monitor CWEP outreach initiatives that will be activities to ensure 5. administered by CWEP. partnership 2. Annually - Permit Initiatives will focus on commitments are Years 1 - 5 2. Yes/No residential, commercial, and met during annual school audiences. Target self-assessment pollutants will include those listed in Tables 7 and 12 3. Provide public education about yard 3. Annually - Permit 3. Yes/No waste/leaf litter as a Years 1 - 5 target pollutant NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 18 Table 13: Public Education and Outreach BMPs Town-Sponsored Event or Festival 1. Develop or Conduct outreach activities identify educational addressing impacts of materials for stormwater discharges on residential, 1. Annually - Permit 1. Yes/No water bodies, actions the commercial, or Years 1 - 5 public can take to reduce those school target impacts, and overall audiences to understanding of stormwater distribute or present 6. management issues. Outreach 2. Staff a booth at activities include presentations, the one 2. Number of events, booth set-ups, etc. through event/festival 2. Annually - Permit contact hours, and educational programs or local chosen and Years 1 - 5 materials distributed events (e.g., Spring Fest or present/distribute Morrisville's Green Day). the information Outreach materials include 3. Distribute stormwater hotline and information 3. Number of events, website information on regarding Neuse 3. Permit Year 2 contact hours, and educational materials River Nitrogen to materials distributed target audiences Local Neuse Program Education and Outreach Develop educational materials 1. Establish a to target residents, developers, developer 7. and property owners' stormwater associations regarding the resources section on 1. Permit Year 2 1. Yes/No Local Neuse Nitrogen Program, the website so relevant materials including information about are easily accessible built-upon area (BUA) limits for developers NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 19 Table 13: Public Education and Outreach BMPs 2. Prepare educational materials for developers specific to the requirements of Nutrient Management Strategy implementation.Include information 2. permit Year 2 2. Yes/No on nutrient calculation guidance, minimum onsite stormwater requirements, nutrient targets, and nutrient offset procedures 3. Post education and information resources for Property Owners Associations and the general public 3. Permit Year 2 3. Yes/No regarding BUA limits and the need for adequate SCM maintenance on the stormwater web page 2.1.7, 3.2.3 and 3.6.5(c):Web Site Measures to provide a web site designed to convey the program's message(s) and provide online Permit materials including ordinances, or other regulatory mechanisms, or a list identifying the ordinances or Ref. other regulatory mechanisms, providing the legal authority necessary to implement and enforce the requirements of the permit and SWMP-NMS. The web page shall also provide developers with all relevant post-construction requirements, design standards, checklists and/or other materials. NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 20 Table 13: Public Education and Outreach BMPs BMP A B C D No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting Implementation Metric Stormwater Pages on Town Website Continue to maintain the 1 Post the updated 1. Permit year 1 1. Report the date stormwater web pages with SWMP and permit posted information regarding relevant ordinances, post-construction requirements, design 8 standards, and resident- 2. Maintain the web specific resources/programs. pages - update any 2. Annually - Permit Provide a link to the MS4 broken links, upload Years 1 - 5 2. Yes/No permit and SWMP and hotline new educational number. Update ordinances material and post-construction requirements with Local Neuse Program Rules Permit 3.2.5: Stormwater Hotline Ref. Measures for a stormwater hotline/helpline for the purpose of public education and outreach. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Stormwater Hotline 1. Continue to Continue to maintain the publicize hotline in Stormwater hotline that allows materials developed 1. Annually - Permit citizens to report illegal Years 1 - 5 for the Stormwater 1. Yes/No dumping into storm drainage program and posting systems, streams, or other on stormwater web 9. page Stormwater related concerns. 2. Use Access The hotline is advertised on the stormwater webpage. Develop Stormwater and implement a method for Database to track 2. Annually - Permit 2. Number and type documenting resolution of the number and type Years 1 - 5 of calls complaints/illicit discharges of calls received and document resolutions of calls NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 21 Part 6: Public Involvement and Participation Program This SWMP-NMS identifies the minimum elements and implementation of a Public Involvement and Participation Program that complies with applicable State, Tribal and local public notice requirements. The Town of Morrisville will manage, implement, and report the following public involvement and participation BM Ps. Table 14: Public Involvement and Participation BMPs Permit 3.3.1: Public Input Ref. Mechanisms for public involvement that provide for input on stormwater issues and the stormwater program. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Stormwater Pages on Town Website Continue to maintain the stormwater web pages with information regarding relevant ordinances, post-construction requirements, design 1. Maintain the web 10. standards, and resident- pages - update any specific resources/programs. broken links, upload 1. Annually - Permit 1. Yes/No Provide a link to the MS4 new educational Years 1 - 5 permit and SWMP and hotline material number. Update ordinances and post-construction requirements with Local Neuse Program Rules (see BMP 8) Stormwater Hotline Maintain the stormwater hotline for citizens to ask stormwater questions and 1. Continue to report stormwater issues. Train publicize hotline in 11 the hotline operator and materials developed 1. Annually - Permit identify and train after-hours for the stormwater Years 1 - 5 1. Yes/No personnel to direct stormwater program and posting calls. The hotline number will on stormwater web be advertised on the page stormwater webpage (see BMP 9) Permit 3.3.2:Volunteer Opportunities Ref. Measures to provide volunteer opportunities designed to promote ongoing citizen participation. NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 22 Table 14: Public Involvement and Participation BMPs BMP A B C D No Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Town-Sponsored Volunteer Opportunities Plan and implement one Town- 1. Develop or sponsored volunteer identify one opportunity(in person or volunteer activity 1. Annually - Permit 1. Yes/No virtually) such as stream that addresses a Years 1 - 5 cleanups and monitoring, NC target pollutant or 12 Big Sweep, or Earth Day pollutants activities at least once a year. Residential, commercial, and 2. Number of events, school audiences will be 2. Coordinate and 2. Annually - Permit participants, and targeted with special emphasis host the activit Years 1 - 5 how many bags of on civic groups, large y waste collected (if employers, and large trade applicable) associations NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 23 Part 7: Illicit Discharge Detection and Elimination Program The Town of Morrisville will develop, manage, implement, document, report and enforce an Illicit Discharge Detection and Elimination Program which shall, at a minimum, include the following illicit discharge detection and elimination BMPs. Table 15: Illicit Discharge Detection and Elimination BMPs 3.4.1: MS4 Map Permit Measures to develop, update and maintain a municipal storm sewer system map including stormwater Ref. conveyances, flow direction, major outfalls and waters of the United States receiving stormwater discharges. BMP A B C D No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting Implementation Metric Update MS4 Map Continue to maintain the MS4 map with information including stormwater conveyances, 1. Maintain a current 13. outfalls, and receiving waters. map showing major 1. Annually - Permit Update the map annually with outfalls and receiving Years 1 - 5 1. Yes/No newly identified or constructed streams stormwater infrastructure. Update the map with Local Neuse Program requirements 3.4.2: Regulatory Mechanism Permit Measures to provide an IDDE ordinance or other regulatory mechanism that provides legal authority to Ref. prohibit,detect,and eliminate illicit connections and discharges,illegal dumping,and spills into the MS4, including enforcement procedures and actions. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Maintain Legal Authority The Town's stormwater ordinance (UDO Sec. 7.6.2 & 7.6.4) provides legal authority 14. to prohibit, detect, and 1. Maintain and 1. Annually - Permit eliminate illicit connections and review IDDE 1. Yes/No discharges, illegal dumping, and ordinance Years 1 - 5 spills into the MS4, including enforcement procedures and actions NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 24 Table 15: Illicit Discharge Detection and Elimination BMPs 3.4.3: IDDE Plan Measures to maintain and implement a written IDDE Plan to detect and address illicit discharges, illegal dumping and any non-stormwater discharges identified as significant contributors of pollutants to the Permit MS4. The plan shall provide standard procedures and documentation to: Ref. a) Locate priority areas likely to have illicit discharges, b) Conduct routine dry weather outfall inspections, c) Identify illicit discharges and trace sources, d) Eliminate the source(s) of an illicit discharge, and e) Evaluate and assess the IDDE Program. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric IDDE Plan Document 1. Develop a method for identifying/ reporting illicit discharges from 1. Permit Year 1 1. Yes/No sanitary sewer overflows or failing septic systems 2. Develop criteria for identifying chronic violators and Develop comprehensive "hot spots" by 2. Permit Year 1 2. Yes/No written IDDE SOP document owner/operator and that reports inspection location requirements, priority areas 15. and inspection frequencies, illicit discharge identification 3. Identify priority 3. Permit Year 1 3. Yes/No and tracking, methods to areas for inspections resolve discharges and follow- up, and evaluation and a 4. Document outfall assessment criteria inspection 4. Number and frequencies that 4. Annually - Permit percent of outfalls allows for 100% of outfalls to be Years 1 - 5 inspected inspected through (%/# completed) permit cycle 5. Train staff to 5. Annually - Permit 5. Number of staff perform inspections Years 1 - 5 trained 16. Annual IDDE Plan Evaluation NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 25 Table 15: Illicit Discharge Detection and Elimination BMPs 1. Evaluate the plan with Town Stormwater Engineering Perform an annual evaluation Manager. Review of IDDE Plan implementation IDDE reports and 1. Annually - Permit and effectiveness. Review inspections to 1. Yes/No documentation to identify identify chronic Years 1 - 5 chronic violators violators, issues, and/or "hot-spot" areas according to the criteria identified in the IDDE Plan 3.4.4: IDDE Tracking Permit Measures for tracking and documenting the date(s) an illicit discharge, illicit connection or illegal Ref. dumping was observed,the results of the investigation, any follow-up of the investigation,the date the investigation was closed, the issuance of enforcement actions, and the ability to identify chronic violators. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Track and Document IDDE Investigations 17• Maintain the existing IDDE 1. Continue to track 1. Number of illicit tracking database violations in the 1. Continuously database discharges identified 3.4.5: Staff IDDE Training Measures to provide training for municipal staff and contractors who, as part of their normal job Permit responsibilities, may observe an illicit discharge, illicit connection, illegal dumping, or spills. Training Ref. shall include how to identify and report illicit discharges, illicit connections, illegal dumping, and spills. Each staff training event shall be documented, including the agenda/materials, date, and number of staff participating. A B C D NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 26 Table 15: Illicit Discharge Detection and Elimination BMPs BMP Schedule for Annual Reporting No. Description of BMP Measurable Goal(s) Implementation Metric Staff Training 1. Continue to train staff with Illicit Continue to provide training to Discharge & appropriate municipal staff of Detection indicators of potential illicit responsibilities or 1. Annually - Permit 1. Training date, and 18. discharges/ connections and the potential to Years 1 - 5 number of attendees illegal dumping and the discover an illicit appropriate avenues through discharge during which to report suspected illicit routine work discharge activities annually 2. Train new staff 2. During new staff 2. Number of that will be part of on-boarding attendees the IDDE program 3.4.6: IDDE Reporting Permit Measures for the public and staff to report illicit discharges, illegal dumping, and spills. The mechanism Ref. shall be publicized to facilitate reporting and shall be managed to provide rapid response by appropriately trained personnel. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Stormwater Pages on Town Website Continue to maintain the stormwater web pages with information regarding relevant ordinances, post-construction requirements, design 1. Maintain the web 19. standards, and resident- pages - update any specific resources/programs. broken links, upload 1. Annually - Permit 1. Yes/No Provide a link to the MS4 new educational Years 1 - 5 permit and SWMP and hotline material number. Update ordinances and post-construction requirements with Local Neuse Program Rules (see BMP 8) 20. Stormwater Hotline NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 27 Table 15: Illicit Discharge Detection and Elimination BMPs Maintain the stormwater hotline for citizens to ask stormwater questions and 1. Continue to report stormwater issues. Train publicize hotline in the hotline operator and materials developed 1. Annually - Permit identify and train after-hours for the stormwater Years 1 - 5 1. Yes/No personnel to direct stormwater program and posting calls. The hotline number will on stormwater web be advertised on the page stormwater webpage (see BMP 9) NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 28 Part 8: Construction Site Runoff Control Program In accordance with 15A NCAC 02H .0153,the Town of Morrisville relies upon the North Carolina Sedimentation Pollution Control Act (SPCA) of 1973 as a qualifying alternative program to meet a portion of the NPDES MS4 Permit requirements for construction site runoff control measures. The SPCA requirements include reducing pollutants in stormwater runoff from construction activities that result in land disturbance of greater than or equal to one acre and includes any construction activity that is part of a larger common plan of development that would disturb one acre or more. The state SPCA Program is either delegated to a city/town, delegated to a county, or implemented by NCDEQ in non-delegated areas. Table 16: Qualifying Alternative Program Components for Construction Site Runoff Control Program Permit State or Local Legal Authority Implementing Entity Reference Program Name Wake County 15A NCAC Chapter 04, 3.5.1 - Delegated SPCA NCDEQ Approved Delegation, Wake County 3.5.4 Program* Interlocal Agreement/Joint Resolution, Local Ordinance * The local delegated SPCA Program ordinance(s)/regulatory mechanism(s) can be found at: Wake County - Sedimentation and Erosion Control. The Town of Morrisville also implements the following BMPs to meet NPDES MS4 Permit requirements. ITable 17: Construction Site Runoff Control BMPs I Permit 3.5.6: Public Input Ref. Measures to provide and promote a means for the public to notify the appropriate authorities of observed erosion and sedimentation problems. BMP A B C D No Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Municipal Staff Training Train municipal staff who 1. Train stormwater receive calls from the public on staff on proper 21 handling of the protocols for referral and 1. Annually - Permit 1. Number of staff tracking of construction site construction site Years 1 - 5 trained runoff control complaints vs. runoff control illicit discharge reporting complaints vs. illicit discharge reporting 22. Stormwater Hotline and Alternative Reporting Methods NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 29 Table 17: Construction Site Runoff Control BMPs 1. Continue to publicize hotline in Continue to provide and materials developed promote the Stormwater for the stormwater 1. Annually - Permit 1 Yes/No Hotline and link to the Wake program and posting Years 1 - 5 County sedimentation and on stormwater web erosion control hotline to page provide a method to notify the appropriate authorities of 2. Publicize Wake observed erosion and County's sediment sedimentation problems hotline on 2. Permit Year 1 2. Yes/No stormwater web page 3.5.5: Waste Management Permit Measures to require construction site operators to control waste such as discarded building materials, Ref. concrete truck washout, chemicals, litter, and sanitary waste at the construction site that may cause adverse impact to water quality. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric The requirements are fully met by the Wake County Sedimentation and Erosion Control Program. NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 30 Part 9: Post-Construction Site Runoff Control Program This SWMP-NMS identifies the minimum elements to develop, implement and enforce a program to address stormwater runoff from new development and redevelopment projects that disturb greater than or equal to one acre, including commercial or industrial projects less than one acre or projects that are part of a larger common plan of development or sale, that are located within the Town of Morrisville and discharge into the MS4. These elements are designed to minimize water quality impacts utilizing a combination of structural SCMs and/or non-structural BMPs appropriate for the community and ensure adequate long-term operation and maintenance of SCMs. This part of the Neuse Local Program identifies the elements being used to develop, implement, and enforce a program to reduce nutrients in stormwater runoff from new development projects and development expansions. These elements meet the requirements set forth in the Neuse Stormwater Rule (15A NCAC 02B .0711). These elements are designed to minimize water quality impacts through a combination of structural SCMs and nutrient offset buy-downs, and to ensure adequate long-term operation and maintenance of SCMs. In accordance with 15A NCAC 02H .0153 and .1017, the Town of Morrisville implements the following State post-construction program requirements, which satisfy the NPDES Phase II MS4 post-construction site runoff control requirements as Qualifying Alternative Programs (QAPs) in the MS4 area(s) where they are implemented. Table 18: Qualifying Alternative Program(s)for Post-Construction Site Runoff Control Program State QAP Name State Requirements Local Ordinance / Regulatory Mechanism Reference Water Supply Watershed 15A NCAC 2B (WS-IV) .0620 - .0624 UDO Article 7 Neuse River Basin 15A NCAC 2B .0235/ Nutrient Sensitive (NSW) 15A NCAC 02B .0711 UDO Update in Process Management Strategy NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 31 Legend N N6ti i Morrisville Limits i ®ETJ Water Supply Watersheds c m Protected(P)or Critical(C) 5n� Area: E C G p c Nutrient Sensitive b Waters-Upper - Neuse-Neuse Uq River Basin • Haw-Cape Fear = q �lf'River Basin r m Streams t 4 n rD r � 7. JJ f �= ..Orrlg�ille G�,pPnfL q c+ U G L U L. 0 0.25 0.5 1 1.5 2 y Miles n =y y � RF,Garirrirr SafcGraph USES,EPA,NPS USDA r7 x � Coles nch Figure 4: Town of Morrisville Post-Construction Programs NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 32 The post-construction program applies throughout the Town limits, but not the ETJ. The Neuse Local Program applies to the portions of the town located in the Neuse River Basin. Built-upon area (BUA) for new projects and BUA additions will be tracked by recording through EnerGov. The Town of Morrisville has existing requirements other than Qualifying Alternative Program(s) for implementation of the NPDES Phase II MS4 post-construction program requirements. These existing requirements are codified in local ordinance(s), and implementation is further defined in guidance, manuals and/or standard operating procedure(s) as summarized in Table 19 below. Table 19: Summary of Existing Post-Construction Program Elements Permit Requirements for Municipal Ordinance/Code Reference(s) Date Adopted Plan Review and Approval and/or Document Title(s) 3.6.2(a) Authority Sec. 7.2.2 (UDO) 9/1/2020 3.6.3(a) & 15A NCAC 02H.0153(c) Federal, State & Sec. 7.1.4 (UDO) / Ord. No. 2016-004 4/1/2016 Local Projects 3.6.3(b) Plan Review Sec. 7.1.4 (UDO) / Ord. No. 2016-004 4/1/2016 3.6.3(c) Operations and Sec. 7.4.2.A (UDO) / Ord. No. 2016-054 11/22/2016 Maintenance (O&M) Agreement 3.6.3(d) O&M Plan Sec. 7.4.2.A (UDO) / Ord. No. 2016-054 11/22/2016 3.6.3(e) Deed Sec 7.3.1 (UDO) 9/1/2020 Restrictions/Covenants 3.6.3(f)Access Easements Sec. 7.4.8 (UDO) 9/1/2020 Permit Requirements for Municipal Ordinance/Code Reference(s) Date Adopted Inspections and Enforcement and/or Document Title(s) 3.6.2(b) Documentation Sec. 7.4.3 & Sec. 7.4.6 (UDO) 9/1/2020 3.6.2(c) Right of Entry Sec. 7.4.3.A/B (UDO) 9/1/2020 3.6.4(a) Pre-CO Inspections Sec. 7.2.3.D/E (U 004 / Ord. No. 2016- 4/1/2016 3.6.4(b) Compliance with Plans Sec. 7.2.3.D (UDO) / Ord. No. 2016-004 4/1/2016 3.6.4(c)Annual SCM Inspections Sec. 7.4.1.B (UDO) 9/1/2020 3.6.4(d) Low Density Inspections See BMP 35 See BMP 35 3.6.4(e) Qualified Professional Sec. 7.4.1.13 (UDO) 9/1/2020 Permit Requirements for Municipal Ordinance/Code Reference(s) Date Adopted Fecal Coliform Reduction and/or Document Title(s) 3.6.6(a) Pet Waste See BMP 39 See BMP 39 3.6.6(b) On-Site Domestic NCGS 130A-335(e) 7/1/1982 Wastewater Treatment The annual reporting metrics for the post construction program are provided in Table 20: Post Construction Site Runoff Control BMPs below. ITable 20: Post Construction Site Runoff Control BMPs I Permit 3.6.5(a), 3.6.5(b),and 4.1.3: Minimum Post-Construction Reporting Requirements Ref. Measures to document activities over the course of the fiscal year (July 1 - June 30) including appropriate information to accurately describe progress, status, and results. NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 33 Table 20: Post Construction Site Runoff Control BMPs BMP A B C D No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting Implementation Metric Standard Reporting 1. Track number of 1. Continuously - 1. Number of plan low-density plan Permit Years 1 - 5 reviews performed reviews performed for low density 2. Track number of 2. Continuously - 2. Number of plan low-density plans Permit Years 1 - 5 approvals issued for approved low density Implement standardized 3. Maintain a current tracking, documentation, inventory of projects 3. Number and type inspections, and reporting and constructed 3. Continuously - of SCMs added to mechanisms to compile SCMs including SCM Permit Years 1 - 5 the inventory 23 appropriate data for the annual type, location, and self-assessment process. Data last inspection date shall be provided for each Post-Construction/ Qualifying Alternative Program being 4. Track number of 4. Continuously - 4. Number of SCM implemented as listed in Tables SCM inspections Permit Years 1 - 5 inspections 18 and 19 performed 5. Track number of 5. Number of low- low-density 5. Continuously - density projects inspections Permit Years 1 - 5 inspected performed 6. Track number of 6. Number of low-density 6. Continuously - enforcement actions enforcement actions Permit Years 1 - 5 issued taken Standard Nutrient Management Strategy Reporting 1. Track number of 1.Number of plan 24• NMS-subject plans 1. Continuously - approvals issued for approved in past Permit Years 1 - 5 NMS-subject year developments in the past year NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 34 Table 20: Post Construction Site Runoff Control BMPs Implement standardized tracking, documentation, 2. Number of inspections and reporting 2. Maintain a current developments with mechanisms to compile inventory of 2. Continuously - BUA limits added to appropriate data for the annual developments and Permit Years 1 - 5 inventory in the past self-assessment process for the lots with BUA limits Neuse Nutrient Management year Strategy (NMS) Data Used in Nutrient Calculations 1. Nutrient calculation input data for all 1. Export SNAP developments and input data from each 1. Continuously - expansions subject Input data used for the development upon Permit Years 1 - 5 to the Neuse calculation of nutrient export approval Stormwater Rule and reduction by SCMs for all submitted to 25. development sites subject to NCDEQ by October .0711 will be collected for the 30 of each year year and submitted as an 2. Provide adjusted appendix for the Local SNAP input data 2. Nutrient Program's Annual Report from each 2, Annually - Permit calculation data for development where Years 1 - 5 these developments completed and a notice for landcovers are which data are to be different from what replaced was permitted Permit 2.3 and 3.6: Qualifying Alternative Program(s) Ref. Measures to develop, implement and enforce additional BMPs in order to comply with the QAP state program requirements. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric The QAP requirements are fully met by the existing QAP for post-construction, see references provided in Table 18 and additional Neuse Local Program BMPs described herein. 3.6.2: Legal Authority Measures to maintain adequate legal authorities through ordinance or other regulatory mechanism to: (a) review designs and proposals for new development and redevelopment to determine whether Permit adequate stormwater control measures will be installed, implemented, and maintained, (b) request Ref. information such as stormwater plans, inspection reports, monitoring results, and other information deemed necessary to evaluate compliance with the Post-Construction Stormwater Management Program, and (c) 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 with the Post-Construction Stormwater Management Program. A B C D NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 35 Table 20: Post Construction Site Runoff Control BMPs BMP Schedule for Annual Reporting No. Description of BMP Measurable Goal(s) Implementation Metric Nutrient Management Strategy Requirements Specified in Ordinance Adopt a Neuse Nutrient 1. Establish nutrient 26• Management Strategy through targets through the Town's Unified ordinance 1. Permit Year 1 1. Yes/No Development Ordinance revision Authority to Review Federal,State,and Local Government Plans 1. Revise code to require Federal, Ensure local ordinance State, and local specifically requires government projects 27• compliance with Nutrient to comply with post Management Strategy by construction 1. Permit Year 1 1. Yes/No Federal, State, and Local requirements unless government projects subject to its own NPDES MS4 permit or qualifying alternative program 28. Legal Authorities for Development Plans and Plan Review NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 36 Table 20: Post Construction Site Runoff Control BMPs Provide adequate legal authorities designed to meet the objectives of the Post- Construction Site Runoff Controls Stormwater Management program, including the ability to request stormwater plans, conduct 1. Establish legal development design reviews authority through 1. Permit Year 1 1. Yes/No and approvals, review and approve O&M Plans and code revision Agreements for all SCMs, requiring deed restrictions and protective covenants for SCMs, and requiring recordation of BUA limits for projects and individual lots within SCM Minimum Design Criteria Specified Ensure the local ordinance or 1. Revise code to 29• local SCM design manual specify State specifically refers to the State's Minimum Design 1. Permit Year 1 1. Yes/No Minimum Design Criteria Criteria for SCM design if required 3.6.3: Plan Review and Approval Measures to maintain plan review and approval authority, standards and procedures to: (a) Require Federal, State, and local government projects to comply with Post-Construction Program requirements throughout the entire MS4 permitted area, unless the entity is subject to its own NPDES MS4 permit or a qualifying alternative program, (b) Conduct site plan reviews of all new development and redeveloped sites that disturb greater than or equal to one acre, and sites that Permit disturb less than one acre that are part of a larger common plan of development or sale for Ref. compliance with 15A NCAC 02H .1017 and the qualifying alternative programs that apply within your jurisdiction, (c) Ensure that each project has an Operation and Maintenance Agreement that complies with 15A NCAC 02H .1050(12), (d) Ensure that each project has an Operation and Maintenance Plan that complies with 15A NCAC 02H .1050(13), (e) Ensure that each project has recorded deed restrictions and protective covenants, that require the project to be maintained consistent with approved plans, and (f) Ensure that each SCM and associated maintenance accesses be protected in a permanent recorded easement per 15A NCAC 02H 1050 (9) and (10). BMP A B C D No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting Implementation Metric 30. Review Federal, State, and Local Government Development Plans NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 37 Table 20: Post Construction Site Runoff Control BMPs Ensure development plans are reviewed for any Federal, 1. Ensure review State, and Local government process includes 1. Permit Year 1 1. Yes/No projects within the jurisdiction, Federal, State, and unless entity has its own MS4 Local Government permit Review Plans for Compliance with Nutrient Management Strategy Conduct site plan reviews of all new development and development expansions for compliance with the 1. Establish 31 stormwater treatment and application intake nutrient reduction 1. Permit Year 1 1. Yes/No requirements in 15A NCAC and review 02B .0711 or .0731, including procedures reviews of nutrient calculations using a DWR-approved calculation tool Require Recordation of BUA Limits on Deeds or Plats Ensure that for lots in developments with a Common 32 Plan of Development that a 1. Establish legal BUA limit, based on the authority through 1. Permit Year 1 1. Yes/No approved stormwater plan, is code revision recorded with either the deed or plat Plan Review Staff Training on Nutrient Calculator Tool 1. All current plan review staff 1. Number of review participate in live 1. Permit Year 1 staff that attended Ensure all plan review staff online training for live online training 33. have gone through DWR- calculator tool provided plan reviewer training for the approved nutrient calculator 2. Plan review staff 2. Number of review who were unable to attend live online 2. As Needed staff that viewedrecording of training workshop view that year recording of training 34. SCM Transfer Process NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 38 Table 20: Post Construction Site Runoff Control BMPs Ensure that each SCM 1. Continue to 1. Number of SCMs reviewed has an Operation and review site plans for 1. Continuously permitted annually Maintenance Agreement, an SCM compliance Operation and Maintenance Plan, appropriate recorded deed restrictions and 2. Ensure annual protective covenants, and a SCM inspections are 2 Annually - Permit maintenance and accesses performed by the 2. Yes/No easement appropriate Years 1 - 5 responsible party 3.6.4: Inspections and Enforcement Measures to maintain inspection and enforcement authority, standards, and procedures to: (a) Conduct post-construction inspections prior to issuing a Certificate of Occupancy or a Temporary Permit Certificate of Occupancy. Alternatively, the project owner may provide a surety bond to guarantee Ref. compliance with the approved plan(s), (b) Ensure that the project has been constructed in accordance with the approved plan(s), (c) Ensure annual inspection of each permitted SCM to ensure compliance with the approved Operation and Maintenance Agreement, (d) Ensure inspection of low-density projects at least once during the permit term, and (e) Require that inspections be conducted by a qualified professional. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Low-Density Inspections 1. Revise code to require inspection of low-density projects 1. Code reference at least once during 1. Permit Year 4 and date adopted Revise existing ordinance to the permit term by a 35. specifically require inspection qualified of low-density projects and professional continue to require annual 2. Conduct SCM inspections inspection of low- density projects 2. Number of low- once per a permit 2. Permit Year 5 density inspections term and document performed any follow-up 3.6.5: Documentation Measures to maintain adequate documentation and standardized inspection and tracking mechanisms Permit to: (a) Maintain an inventory of post-construction SCMs and low-density projects, (b) Document, track Ref. and maintain records of inspections and enforcement actions. Tracking shall include the ability to identify chronic violators, and (c) Make available to developers all relevant ordinances, post- construction requirements, design standards, checklists, and/or other materials. A B C D NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 39 Table 20: Post Construction Site Runoff Control BMPs BMP Schedule for Annual Reporting No. Description of BMP Measurable Goal(s) Implementation Metric Inventory of Low-Density Projects 36. Develop an inventory of low- 1. Establish list of 1. Number of low- density projects to be utilized existing low-density 1. Permit Year 4 density projects for inspections and tracking projects inventoried Inventory of Developments and Lots with BUA Limits Develop and maintain a 1. Establish a list of comprehensive inventory of developments with 1. Permit Year 4 1. Yes/No projects that have BUA limits BUA limits tied to their stormwater management or nutrient loading requirements to be used when reviewing new 2. Establish a list of 37• development plans. Develop and maintain a database BUA parcels or lots with 2. Permit Year 4 2. Yes/No BUA limits limits on developments and individual lots within, with BUA limits based on their approved stormwater plans. Actual BUA 3. Add developments amounts are updated as new and lots within to 3. Total number of the list when project 3. Permit Years 4-5 developments and development is approved for a and occurs on individual lots approved are lots Inspection Tracking 1. Establish Track the results of regular inspection tracking post-construction SCM and mechanism for low- 1. Permit Year 4 1. Yes/No 38. low-density/BUA inspections density/BUA to provide documentation and tracking the ability to identify chronic 2. Continue to track violators SCM inspections and 2 Permit Years 4-5 2. Yes/No start tracking low- density inspections NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 40 Table 20: Post Construction Site Runoff Control BMPs 3.6.6: Fecal Coliform Reduction Measures to control, to the maximum extent practicable, sources of fecal coliform per 15A NCAC Permit 02H .1017(7). At a minimum, the program shall include: (a) A pet waste management component, Ref. which may be achieved by revising an existing litter ordinance, and (b)An on-site domestic wastewater treatment system component, if applicable, which may be coordinated with local county health department, to ensure proper operation and maintenance of such systems. BMP A B C D No• Description of BMP Measurable Goal(s) Schedule for Annual Reporting Implementation Metric Ordinance for Fecal Coliform Reduction 39. Adopt an appropriate 1. Establish legal ordinance with a pet waste authority through 1. Permit Year 4 1. Yes/No management component code revision NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 41 Part 10: Pollution Prevention and Good Housekeeping Programs This SWMP-NMS provides a comprehensive pollution prevention and good housekeeping strategy for the Town of Morrisville municipal facilities and operations. Pollution prevention and good housekeeping is accomplished through the implementation of seven required programs, which collectively address the ultimate goal of preventing or reducing pollutant runoff from municipal operations such as parks and open space maintenance, fleet and building maintenance, new construction and land disturbances, and municipal storm sewer system maintenance. Pollution prevention and good housekeeping for municipal operations includes the following programs: 1. Municipal Facilities O&M Program 2. Spill Response Program 3. MS4 O&M Program 4. Municipal SCM O&M Program 5. Pesticide, Herbicide and Fertilizer Management Program 6. Vehicle and Equipment Maintenance Program 7. Pavement Management Program The Town of Morrisville will manage, implement, and report the pollution prevention and good housekeeping BMPs as specified in Table 21 below for each required program. Table 21: Pollution Prevention and Good Housekeeping BMPs 3.7.1: Municipal Facilities Operation and Maintenance Program Measures to manage facilities that are owned and operated by the permittee and have the potential for Permit generating polluted stormwater runoff. The permittee shall maintain a current inventory of municipal Ref. facilities; perform facility inspections and routine maintenance; establish specific frequencies, schedules, and standard documentation; provide staff training on general stormwater awareness and implementing pollution prevention and good housekeeping practices BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Inventory of Municipal Facilities Maintain an up-to-date 1. Maintain and 40. update inventory as inventory of municipal facilities 1. Annually - Permit with potential to generate needed when Years 1 - 5 1. Yes/No polluted runoff facilities are added or closed NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 42 Table 21: Pollution Prevention and Good Housekeeping BMPs Facility Inspections 1. Establish an SOP/plan for facility Establish inspection inspections, frequencies and continue to including an 1. Permit Year 2 1. Yes/No inspect Town-owned facilities inspection schedule, 41. with the potential to pollute inspection report stormwater. Track corrective documentation, and actions and document tracking system resolutions when problems are 2. Perform identified inspections 2. Annually - Permit Number of in according to the Years 1 - 5 inspections performed SOP/plan Staff Training Develop or identify a staff 1. Continue to training program and provide document a training to public works department program for relevant 42 employees. Ensure training Town staff on 1. Annually - Permit 1. Training date and targets litter/yard waste, pollution prevention Years 1 - 5 number of attendees nitrogen, sediment, car and good washing, housekeeping fertilizer/pesticides/herbicides, and illicit discharges practices 3.7.2: Spill Response Program Permit Measures for facilities and operations that store and/or use materials that have the potential to Ref. contaminate stormwater runoff if spilled.The permittee shall maintain written spill response procedures and train staff on spill response procedures. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Inventory of Facilities with Spill Potential Maintain a list of Town 1. Update list of facilities and operations storing Town facilities and 1 When 43. materials that would be a operations with spill necessitated by pollutant if spilled and potential when 1. Yes/No introduced to the stormwater facilities or changes in facilities system and classify by hazard operations are or operations and quantity changed 44. Spill Response SOP NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 43 Table 21: Pollution Prevention and Good Housekeeping BMPs 1. Train staff at facilities with Maintain spill response potential for high 1. Annually - Permit 1. Training date, and procedures as part of the hazard spills in first Years 1 - 5 number of attendees PPGH Plan and train staff on response actions and procedures as well as have an reporting procedures organized vehicle spill cleanup response to prevent pollutants 2. Annually review from vehicular accidents from and update spill entering the storm drain response SOP to 2. Annually - Permit 2 Yes/No system identify new Years 1 - 5 polluting materials or processes 3.7.3: MS4 Operation and Maintenance Program Permit Measures to minimize pollutants in the stormwater collection system. The permittee shall provide Ref. operation and maintenance staff training on stormwater awareness and pollution prevention, perform MS4 inspections, maintain the collection system including catch basins and conveyances; and establish specific frequencies, schedules, and standard documentation. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric MS4 System Operation and Maintenance Plan 1. Develop an SOP that includes proactive inspection Develop and maintain a schedules, standard 1. Permit Year 1 1. Yes/No proactive plan for MS4 system documentation, staff maintenance, requiring regular responsibilities, and 45. inspections and maintenance. proper maintenance Verify, document, and training prioritize maintenance activities identified by 2. Perform regular 2. Following schedule established 2. Number of inspections or citizen reports inspections in in SOP, once SOP inspections accordance with the and tracking system documented SOP are established 3.7.4: Municipal SCM Operation and Maintenance Program Permit Measures to manage municipally owned, operated, and/or maintained structural stormwater control Ref. measures(SCMs)that are installed for compliance with the permittee's post-construction program.The permittee shall maintain a current inventory of SCMs, perform SCM inspections and maintenance, and shall establish specific frequencies, schedules, and documentation. A B C D NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 44 Table 21: Pollution Prevention and Good Housekeeping BMPs BMP Schedule for Annual Reporting No. Description of BMP Measurable Goal(s) Implementation Metric SCM Inspections and Maintenance 1. Update the map 1. Number of Town- when new Town- 1. Annually - Permit owned SCMs added owned SCMs are Years 1 - 5 to the map Maintain an inventory of constructed municipally owned structural 2. Maintain NC SCM SCMs. Continue to perform Inspections and 2. Number of staff 46. and document regular Maintenance 2. Continuously members with active inspection and maintenance of Certification for certification municipally owned structural appropriate SCMs according to the O&M personnel plans developed for all 3. Perform municipally owned SCMs inspections and 3. Annually - Permit 3. Number of Town- maintenance Years 1 - 5 owned SCMs according to O&M inspected plan for each SCM 3.7.5: Pesticide, Herbicide and Fertilizer Management Program Permit Measures to minimize water quality impacts from the use of landscape chemicals. The permittee shall Ref. provide routine pollution prevention and chemical use, storage, and handling training, and shall ensure compliance with permits and applicator certifications. BMP A B C D No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting Implementation Metric Applicator Licensing 1. Continue to require staff training in pollution 1. Annually - Permit 1. Number of staff prevention and Years 1 - 5 trained chemical use, Continue to require City staff storage and handling 47• 2. Maintain a list of who apply landscape chemicals certified employees 2. Annually - Permit 2. Number of to maintain applicator licenses and update annually Years 1 - 5 certified employees to track certifications 3. Maintain a list of certified contractors 3. Annually - Permit 3. Number of and update annually Years 1 - 5 certified contractors to track certifications NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 45 Table 21: Pollution Prevention and Good Housekeeping BMPs 3.7.6:Vehicle and Equipment Maintenance Program Measures to prevent and minimize contamination of stormwater runoff from areas used for municipal Permit vehicle and equipment maintenance and/or cleaning. The permittee shall ensure that municipal Ref. industrial facilities subject to NPDES industrial permitting comply with those permit requirements, provide routine pollution prevention training to staff, perform routine inspections,and establish specific frequencies, schedules, and documentation. BMP A B C D No. Schedule for Annual Reporting Description of BMP Measurable Goal(s) Implementation Metric Vehicle and Equipment Maintenance Facility Inspection 1. Review industrial Ensure NPDES industrial NPDES facilities facilities comply with annually for 48 permitting requirements. industrial permit 1. Annually - Permit 1. Yes/No and any Determine if Spill Prevention, compliance and note Years 1 - 5 changes required Control, and Countermeasure if any changes to the (SPCC) Plans are required for industrial plans or any facility processes are required 3.7.7: Pavement Management Program Permit Measures to reduce pollutants in stormwater runoff from municipally owned streets, roads,and parking Ref. lots within the permittee's corporate limits. The permittee shall implement measures to control litter, leaves, debris, particulate and fluid pollutants associated with vehicles, and establish specific frequencies, schedules, and documentation. BMP A B C D No. Description of BMP Measurable Goal(s) Schedule for Annual Reporting Implementation Metric Street Sweeping Maintain an agreement that 1. Develop an SOP, includes street sweeping including a schedule 1 permit Year 1 1. Yes/No 49. following a regular schedule in and plan to order to reduce pollutants from document Town maintained streets and 2. Implement SOP 2. Annually - Permit 2. Total tonnage or parking lots and documentation Years 2 - 5 miles swept Leaf Collection Monitor leaf collection 1. Monitor leaf 1. Total number of 50. activities by a public works .1 Annually - Permit collection contractor collections by contractor and provide public activities Years 1 - 5 contractor education about yard waste NCS000465 SWMP-NMS Town of Morrisville March 2, 2023 Page 46