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HomeMy WebLinkAboutNCS000547_Roxboro MS4 Permit Renewal Application 2_20210823i COMPREHENSIVE STORMWATER MANAGEMENT PLAN FOR THE CITY OF ROXBORO JANUARY 2019UPDATED ii TABLE OF CONTENTS Table of Contents ............................................................................................................. ii Definitions ....................................................................................................................... v 1 Storm Sewer System Information ............................................................................. 6 1.1 MS4 Conveyance System .................................................................................... 6 1.2 Land Use Composition Estimates: ........................................................................ 6 1.3 Estimate Methodology: ......................................................................................... 6 1.4 TMDL Identification ............................................................................................... 6 2 Receiving Streams .................................................................................................... 7 3 Existing Water Quality Programs .............................................................................. 8 3.1 Local Programs: ................................................................................................... 8 3.2 State Programs: .................................................................................................... 8 4 Permitting Information. .............................................................................................. 9 4.1 Responsible Party Contact Lists ........................................................................... 9 5 Co-Permitting Information ....................................................................................... 10 6 Reliance on other government entity to satisfy one or more permit obligations ...... 11 7 Stormwater Management Program ......................................................................... 12 7.1 Public Education and Outreach on Storm Water Impacts ................................... 12 7.1.1 BMP Summary Table ....................................................................................... 12 7.1.2 Target Audience .............................................................................................. 13 7.1.3 Target Pollutant Sources ................................................................................. 13 7.1.4 Outreach Program ........................................................................................... 13 7.1.5 Decision Process ............................................................................................. 13 7.1.6 Evaluation ........................................................................................................ 13 7.2 Public Involvement and Participation .................................................................. 14 7.2.1 BMP Summary Table ....................................................................................... 14 7.2.2 Target Audience .............................................................................................. 15 7.2.3 Participation Program ...................................................................................... 15 7.2.4 Decision Process ............................................................................................. 15 iii 7.2.5 Evaluation ........................................................................................................ 15 7.3 Illicit Discharge Detection and Elimination .......................................................... 16 7.3.1 BMP Summary Table ....................................................................................... 16 7.3.2 Storm Sewer System Map ............................................................................... 18 7.3.3 Regulatory Mechanism .................................................................................... 18 7.3.4 Enforcement: ................................................................................................... 18 7.3.5 Detection and Elimination ................................................................................ 18 7.3.6 Non Stormwater Discharges ............................................................................ 19 7.3.7 Outreach .......................................................................................................... 19 7.3.8 Decision Process ............................................................................................. 19 7.3.9 Evaluation ........................................................................................................ 19 7.4 Construction Site Stormwater Runoff Control ..................................................... 19 7.5 Post-Construction Storm Water Management .................................................... 20 7.5.1 BMP Summary Table ....................................................................................... 20 7.5.2 Stormwater Management Options ................................................................... 22 7.5.2.1 Low Density Projects ............................................................................... 22 7.5.2.2 High Density Projects............................................................................... 22 7.5.3 Non-Structural BMP’s ...................................................................................... 23 7.5.4 Structural BMPs ............................................................................................... 23 7.5.5 Regulatory Mechanism .................................................................................... 23 7.5.6 Operation and Maintenance ............................................................................. 23 7.5.7 Decision Process ............................................................................................. 24 7.5.8 Evaluation ........................................................................................................ 24 7.6 Pollution Prevention/Good Housekeeping for Municipal Operations .................. 25 7.6.1 BMP Summary Table ....................................................................................... 25 7.6.2 Affected Operations ......................................................................................... 26 7.6.3 Training ............................................................................................................ 26 7.6.4 Maintenance and Inspections .......................................................................... 26 7.6.5 Vehicular Operations ....................................................................................... 27 7.6.6 Waste Disposal ................................................................................................ 27 7.6.7 Flood Management Projects ............................................................................ 27 7.6.8 Decision Process ............................................................................................. 27 iv 7.6.9 Evaluation ........................................................................................................ 27 7.7 Total Maximum Daily Loads (TMDL) .................................................................. 28 7.7.1 BMP Summary Table ....................................................................................... 28 7.7.2 Determination of TMDL’s ................................................................................. 29 7.7.3 Establishing a Water Quality Recovery Plan .................................................... 29 7.7.4 Decision Process ............................................................................................. 29 7.7.5 Evaluation ........................................................................................................ 29 v DEFINITIONS BMP – Best Management Practice also known as a Stormwater Control Measure DEMLR – Division of Energy, Mining, and Land Resources DEQ – Department of Environmental Quality (formerly DENR) EPA – Environmental Protection Agency Illicit Discharge – Any discharge to an MS4 that is not entirely composed of stormwater. Exceptions include discharges from NPDES-Permitted industrial sources and discharges from fire-fighting activities MS4 – Municipal Separate Storm Sewer System. A conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins curbs, gutters, ditches, manmade channels, or storm drains) NPDES – National Pollutant Discharge Elimination System SCM – Stormwater Control Measure TMDL – Total Maximum Daily Load COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 6 1 STORM SEWER SYSTEM INFORMATION 1.1 POPULATION SERVED: 8,238 (2016 estimate from the NC Office of Budget & Management) 1.2 TEN YEAR GROWTH RATE: -1.5% 1.3 JURISDICTIONAL AND MS4 SERVICE AREAS: Jurisdictional area: 6.34 square miles, MS4: 6.34 square miles 1.1 MS4 CONVEYANCE SYSTEM The City of Roxboro MS4 consists of a combination of storm drain piping, roadside ditches, and sheet flow. City streets are maintained by the City's Public Works Department. State roads are maintained and managed by NCDOT. 1.2 LAND USE COMPOSITION ESTIMATES: Residential: 60.6% Commercial: 22% Industrial: 17.4% 1.3 ESTIMATE METHODOLOGY: The land use estimate was based on the zoning within the jurisdictional area as of December 2010. The data was provided by the Person County GIS Department. 1.4 TMDL IDENTIFICATION There are no receiving streams within the City of Roxboro's watershed that are identified as TMDL designated. COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 7 2 RECEIVING STREAMS Table 1. Roanoke and Neuse River Basins Receiving Stream Name Stream Segment Water Quality Classification Use Support Rating River Basin Water Quality Issues Marlowe Creek2 22-58-12-6b C 1 Roanoke Aquatic Life Tanyard Branch 22-58-16-2 C 1 Roanoke N/A U.T. to Mitchell Creek 22-58-12-6-3 C 1 Roanoke N/A U.T. to Story’s Creek 22-58-12-(1) WS-II;HQW 1 Roanoke N/A U.T. to North Flat River 27-3-2 WS-III;NSW 1 Neuse N/A U.T. to North Flat River 27-3-2 WS-III;NSW 1 Neuse N/A U.T. to North Flat River 27-3-2 WS-III;NSW 1 Neuse N/A 1 Aquatic life and secondary recreation, fish consumption 2 On 303d list for impaired waters. COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 8 3 EXISTING WATER QUALITY PROGRAMS 3.1 LOCAL PROGRAMS: The City currently has stormwater ordinances to govern new development as a part of the Neuse River Nutrient Sensitive Waters Management Strategy, Falls Lake Water Supply Watershed and NPDES Phase II Stormwater Regulations. 3.2 STATE PROGRAMS: NCDEQ implements the NC Erosion and Sediment Control Program within the City of Roxboro. COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 9 4 PERMITTING INFORMATION. 4.1 RESPONSIBLE PARTY CONTACT LISTS Position Name Phone No. Fax No. Email City Public Services Director Andrew Oakley 336/599-5658 336/503-0588 aoakley@cityofroxboro.com City Manager Brooks Lockhart 336/599-3116 336/599-3774 blockhart@cityofroxboro.com Assistant City Manger Tommy Warren 336/599-3116 336/599-3774 twarren@cityofroxboro.com City Clerk Trevie Adams 336/599-3116 336/599-3774 tadams@cityofroxboro.com City Attorney Nick Herman 919/929-3905 herman@broughlawfirm.com City Planner Julie Kelly 336/599-3116 336/599-3774 jkelly@cityofroxboro.com Signing Officials: City Public Services Director – Andrew Oakley City Manager – Brooks Lockhart Assistant City Manager – Tommy Warren Duly Authorized Representative: NA City Council City Manager Assistant City Manager Public Services Director Human Resources Planning & Development Fire & Rescue Police Dept.Administration / Clerk Finance Purchasing & Safety City Council City Manager Assistant City Manager Public Services Director Human Resources Planning & Development Fire & Rescue Police Dept.Administration / Clerk Finance Purchasing & Safety COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 10 5 CO-PERMITTING INFORMATION Not applicable COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 11 6 RELIANCE ON OTHER GOVERNMENT ENTITY TO SATISFY ONE OR MORE PERMIT OBLIGATIONS The City of Roxboro will rely on the State Erosion and Sediment Control Program and the Department of Water Quality’s general stormwater permit program for construction activities to meet the construction site stormwater runoff control requirement. This program is governed through the NC Sedimentation Pollution Control Act of 1973 (as amended). Contact Information: NC Sedimentation and Erosion Control Program Raleigh Regional Office Bill Denton 3800 Barrett Drive, Raleigh, NC 27609 919/791-4200 The City also utilizes the TJCOG – The Clean Water Education Partnership (CWEP) to provide the Cities educational responsibilities. Contact Information: TJCOG – Clean Water Education Partnership (CWEP) Jen Schmitz 4307 Emperor Boulevard, Suite 110 Durham, NC 27703 919/558-9342 COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 12 7 STORMWATER MANAGEMENT PROGRAM 7.1 PUBLIC EDUCATION AND OUTREACH ON STORM WATER IMPACTS 7.1.1 BMP Summary Table BMP Measurable Goals YR 1 YR 2 YR 3 YR 4 YR 5 Responsible Position/Party Target Pollutants and/or stressors A description of the target and / or stressors pollutants and likely sources will be maintained. X X X X X City Public Services Director Assistant City Manager Target audiences A bi-annually assessment and update of target audiences likely to have significant storm water impacts and why they were selected will be made. X X X City Public Services Director Assistant City Manager Residential and industrial/commercial issues The city will identify and describe issues, such as specific pollutants, the sources of those pollutants, impacts on biology, and the physical attributes of stormwater runoff, in their education/outreach program X X X City Public Services Director Assistant City Manager Informational Web Site A stormwater website page will be maintained to promote improved water quality. X X X X X City Public Services Director Assistant City Manager Distribute public education materials to identified target audiences and user groups The city will distribute, assess and update as necessary stormwater educational material to appropriate target groups in such a way that is designed to convey the program’s message to the target audience each year. Materials available through the CWEP Program and other resources through a cooperative agreement will be used. X X X X X City Public Services Director Assistant City Manager Maintain Hotline/Help line A stormwater hotline/helpline will be maintained for the purpose of public Education, IDDE calls and Outreach. X X X X X City Public Services Director Assistant City Manager Public Education and Outreach Plan Maintain an education plan. Include in Plan the BMPs, schedule, targeted audiences, and measurable goals. Summarize plan and implementation progress in each annual report. a cooperative agreement, measure and record the extent of exposure. X X X X X City Public Services Director Assistant City Manager COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 13 7.1.2 Target Audience Roxboro residents, school children, local businesses (including gas station owners and landscaping companies) and industry, are targeted because these groups have the most impact on stormwater pollution prevention. 7.1.3 Target Pollutant Sources The education program targets total suspended solids and nutrient loading because turbidity, sedimentation, and nutrients are the pollutants of concern in downstream waters. In addition, floatables, trash, and debris are also targeted. The education program address’s the proper use and disposal of typical household chemicals, garden chemicals, and used motor oil. 7.1.4 Outreach Program School programs, printed materials are distributed via mail and public events, and participation in state cleanup programs will be used to reach the target audience. CWEP stormwater materials are given to every new customer at City Hall. CWEP also runs a digital media campaign that covers Internet, TV and Radio services in the City. By using these methods, the education program reaches the majority of residents of Roxboro, as well as those that do business here. As a result of this outreach program, the target audience will be informed of the importance of reducing storm water pollution and ways they can incorporate pollution reduction in their daily lives. 7.1.5 Decision Process The formation of the stormwater public education and outreach program was based on the mechanisms currently in place, and their means and effectiveness of communicating and educating the public about the issues of stormwater pollution prevention. Each of the BMP’s selected were judged to be an effective and economical tool for educating the general public and/or specific groups within the community, with a specific measurable goal with which to gauge its effectiveness. 7.1.6 Evaluation The education and outreach program will be evaluated based on how each individual BMP is meeting its measurable goal at the end of each reporting period. Changes will be considered for any BMPs that are not meeting the measurable goals. COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 14 7.2 PUBLIC INVOLVEMENT AND PARTICIPATION 7.2.1 BMP Summary Table BMP Measurable Goals YR 1 YR 2 YR 3 YR 4 YR 5 Responsible Position/Party Volunteer Stormwater Program The City will promote various volunteer stormwater programs annually to promote ongoing citizen participation. X X X X X City Public Services Director Assistant City Manager Public Meeting A public meeting will be held annually to discuss the implementation of the permit. This meeting will provide the public with the opportunity to be involved with the stormwater program and will serve as a better conduit for public input than the stormwater committee used previously. More meetings may be held if public involvement is substantial. X X X X X City Public Services Director Assistant City Manager Hotline/Help line A stormwater hotline/helpline for the purpose of public involvement and participation will be maintained. X X X X X City Public Services Director Assistant City Manager COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 15 7.2.2 Target Audience The stormwater management program, will target all interested and affected members of the Roxboro community. The public participation BMP’s target community, public service groups and organizations. 7.2.3 Participation Program Public participation opportunities will be implemented throughout the life of the permit through Volunteer Stormwater Programs. 7.2.4 Decision Process A public meeting is necessary for public participation and input. BMPs were selected to give the public a choice of both active and passive participation roles. 7.2.5 Evaluation The Public Involvement and Participation program will be evaluated based on how each individual BMP is meeting its measurable goal at the end of each reporting period. Changes will be considered for any BMPs that are not meeting the measurable goals. COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 16 7.3 ILLICIT DISCHARGE DETECTION AND ELIMINATION 7.3.1 BMP Summary Table BMP Measurable Goals YR 1 YR 2 YR 3 YR 4 YR 5 Responsible Position/Party Maintain adequate legal authorities The city will annually review the IDDE ordinances or other regulatory mechanisms, or adopt any new ordinances or other regulatory mechanisms that provide the permittee with adequate legal authority to prohibit illicit connections and discharges and enforce the approved IDDE Program. X X X X X City Clerk & Zoning/Subdivision Coordinator City Attorney City Public Services Director Assistant City Manager Maintain a storm sewer system map showing outfalls and the receiving body of water. The city shall maintain a current map showing major outfalls and receiving streams. X X X X X City Public Services Director Maintain an inspection and elimination program, and coordinate with Hazardous Materials within the community. Define and update areas of the community that will be inspected for illicit connections and show on a map the progress made year by year, completing one quarter of the community, geographically measured in square miles, each year. Finish inspection program by end of year five, beginning implementation in year two. Maintain records of the areas screened. Summarize in annual report. X X X X X City Public Services Director Provide Public Education The City will educate the public employees, businesses, and the general public of hazards associated with illegal discharges and improper disposal of waste. X X X X X City Public Services Director Assistant City Manager City Planner Public Reporting mechanism for illicit discharges Maintain a check list to be located near all public works telephones for recording any illicit connections or illegal discharges reported by the public X X X X X City Public Services Director Assistant City Manager Detect dry weather flows Maintain a program for conducting regular dry weather flow field observations in accordance with written field screening procedure for detecting and tracing the sources of illicit discharges. X X X X X City Public Services Director Assistant City Manager COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 17 BMP cont. Measurable Goals YR 1 YR 2 YR 3 YR 4 YR 5 Responsible Position/Party Coordinate with local health department on failing septic systems, locating problem areas in the system map. Provide public information on septic system management. Provide a fact sheet on septic system management, Note date of distribution and number of copies placed as needed. X X X X X City Public Services Director Assistant City Manager Employee Training Provide training for staff and materials through HR to all public employees on illicit connections and how to recognize one. Summarize in annual report. X X X X X City Public Services Director Assistant City Manager Enforcement Maintain a mechanism to track the issuance of notices of violation and enforcement actions as administered by the city. This mechanism shall include the ability to identify chronic violators for initiation of actions to reduce noncompliance. X X X X X City Public Services Director COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 18 7.3.2 Storm Sewer System Map The storm sewer system will be mapped and field verified during the course of normal maintenance operations by the public service department. The route of the system, locations of pipes, drainage ditches, and outfalls will be added to the City’s GIS database. The map will be updated as needed during subsequent maintenance operations. 7.3.3 Regulatory Mechanism The stormwater ordinance to include illicit detection, right of entry, and prohibition of certain non-stormwater discharges. 7.3.4 Enforcement: There are provisions in the ordinance for enforcement actions and penalties for dumping, spills, and willful illicit connection. 7.3.5 Detection and Elimination After the field screening is complete, the City will take measures to identify and remove illegal discharges. Identifying illegal discharges may require a combination of office and field work. After the field screening, staff will consult the jurisdiction- wide information they have compiled to obtain information about the land uses, infrastructure, industries, potential sources and types of pollution that may exist in the drainage area of the outfall. After priority areas have been identified in the office, a systematic field investigation will be planned that minimizes the amount of resources required to identify the source. The following field methods may be used to identify and trace the source of illegal discharges: • Site Investigation • Dry weather flow observations • Smoke Testing/Dye Testing • Television Inspection The right of entry established in the ordinance will provide access for inspection if the origin of the discharge is in doubt. Once an illegal discharge is located and confirmed through field screening, staff will notify the responsible party verbally if possible and follow-up with written notification. If the responsible party does not comply with the removal schedule provided by the City, or receive approval for a revised schedule, the City will take enforcement action and the connection will be removed at the responsible party’s expense. COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 19 7.3.6 Non Stormwater Discharges Currently there are no known non-stormwater discharges that are a significant contributor to the MS4. If any are identified in the future, they will be addressed at that time. 7.3.7 Outreach City employees will be informed of the hazards associated with illegal discharges and improper disposal of waste as part of their general training requirements. These will be addressed in the Pollution Prevention/Good Housekeeping section of this plan, and will include training in hazardous material handling and disposal, as well as notices and signs posted in the appropriate areas. The general public will be educated through the BMP’s listed in the Public Education section of this plan. These educational BMP’s will include brochures, public service announcements, and business education and outreach programs. 7.3.8 Decision Process The formation of the storm water Illicit Discharge Detection and Elimination program was based primarily on regulatory mechanisms. The regulatory, educational, procedural BMP’s selected were judged to be an effective means of detecting and eliminating illicit discharges. 7.3.9 Evaluation The effectiveness of the program will be gauged by the total number of illicit connections detected and removed each year and with public complaints. If the total number remains constant, or increases, changes will be made to the public education program and/or the City ordinance to allow for greater enforcement and penalties. 7.4 CONSTRUCTION SITE STORMWATER RUNOFF CONTROL The City of Roxboro will rely on the North Carolina State Erosion and Sediment Control Program and the Department of Water Quality’s general stormwater permit program for construction activities to meet the construction site stormwater runoff control requirement. COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 20 7.5 POST-CONSTRUCTION STORM WATER MANAGEMENT 7.5.1 BMP Summary Table BMP Measurable Goals YR 1 YR 2 YR 3 YR 4 YR 5 Responsible Position/Party Review the Post Construction Ordinance Review the Post Construction Ordinance for compliance with NC DWQ guidance and local effectiveness. Phase II Post-Construction Ordinance Regulations in conjunction with NC Session Law, Falls Lake Stage I requirements and other DWQ regulations. X X X X X City Public Services Director Assistant City Manager City Planner Review standards and policies that ensure structural BMPs will be in conformance with the state’s Stormwater Management Design Manual Review local standards to remain in compliance with the NC DWQ BMP Manual. Additional measures and techniques may be added to the local ordinance as they are investigated. X X X X X City Public Services Director Plan Reviews Conduct site plan reviews of all new development and redeveloped sites that disturb greater than or equal to one acre (including sites that disturb less than one acre that are part of a larger common plan of development or sale). The site plan review shall address how the project applicant meets the performance standards and how the project will ensure long-term maintenance X X X X X City Public Services Director City Planner Maintain the education program created for land developers and the public. Maintain the education program created for land developers and the public detailed in other BMP parts of this report. Report annually on progress made. X X X X X City Public Services Director Assistant City Manager City Planner Inventory of projects with post construction structural stormwater control measures (SCM) Maintain an inventory of projects with post- construction structural stormwater control measures installed and implemented at new development and redeveloped sites, including both public and private sector sites located within the cities corporate limits that are covered by its post-construction ordinance requirements. X X X X X City Public Services Director City Planner COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 21 7.5.1 BMP Summary Table (cont’d) BMP Measurable Goals YR 1 YR 2 YR 3 YR 4 YR 5 Responsible Position/Party Encourage Low Impact Development Based Design of New Construction LID practices that promote infiltration of flows and groundwater recharge will be encouraged and shall comply with the post-construction requirements, the DWQ BMP Manual and the NCDENR LID Manual. X X X X X City Public Services Director Assistant City Manager City Planner Inspections and long-term maintenance of Stormwater Control Measures (SCMs) Maintain an inspection and maintenance plan for SCM’s. Annual SCM Inspections performed by a qualified professional. SCM maintenance and inspections will be reviewed by the City during the permit cycle. X X X X X City Public Services Director Assistant City Manager City Planner Inspections All Stormwater control measures will be maintained pursuant to its maintaince agreement, the city shall conduct and document inspections of each project site covered under performance standards covered under performance standards, at least one time during the permit term. Before issuing a certificate of occupancy or temporary certificate of occupancy, the permittee shall conduct a post construction inspection to verify that the permittee's performance standards have been met. The city will document and maintain records of inspection findings and enforcement actions and make them available for review by the permitting authority. X X X X X City Public Services Director Enforcement The city will track the issuance of notices of violation and enforcement actions. This will allow the ability to identify chronic violators for initiation of actions to reduce noncompliance. X X X X X City Public Services Director Assistant City Manager COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 22 7.5.2 Stormwater Management Options The existing land usage ordinance includes a post-construction stormwater runoff management program for new development and redevelopment projects that disturb greater than, or equal to, one acre. This includes projects of less than one acre that are a part of a larger common plan of development or sale that discharges into the MS4. All such projects shall be required to apply for locally issued construction permit coverage under one of the following stormwater management options: 7.5.2.1 Low Density Projects Projects shall be permitted as low density if the project meets the following: (I) No more than 2 dwelling units per acre or 24 percent built-upon area (BUA) for all residential and non-residential development; (II) Stormwater runoff from the development shall be transported from the development by vegetated conveyances to the maximum extent practicable: (III)All BUA shall be at a minimum of 30 feet landward of all perennial and intermittent surface waters. For the purpose of this Rule, a surface water shall be present if the feature is approximately shown on either the most recent version of the soil survey map prepared by the Natural Resources Conservation Service of the United States Department of Agriculture or the most recent version of the 1:24,000 scale (7.5 minute) quadrangle topographic maps prepared by the United States Geologic Survey (USGS). An exception to this requirement may be allowed when surface waters are not present in accordance with the provisions of 15A NCAC 2B .0233 (3)(a); and (IV) The permit shall require recorded deed restrictions and protective covenants to ensure that development activities maintain the development consistent with the approved project plans. 7.5.2.2 High Density Projects Projects exceeding the low density threshold (established above in low density section) shall implement stormwater control measures that: (I) Control and treat the difference in stormwater runoff volume leaving the project site between the pre and post development conditions for the 1 year 24 hour storm. Runoff volume drawdown time shall be a minimum of 24 hours, but not more than 120 hours; COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 23 (II) All structural stormwater treatment systems used to meet the requirements of the program shall be designed to have an 85% average annual removal for Total Suspended Solids: (III)General Engineering Design Criteria for all projects shall be in accordance with 15A NCAC 2H .1008(c); (IV) All BUA shall be at a minimum of 30 feet landward of all perennial and intermittent surface waters. For the purpose of this Rule, a surface water shall be present if the feature is approximately shown on either the most recent version of the soil survey map prepared by the Natural Resources Conservation Service of the United States Department of Agriculture or the most recent version of the 1:24,000 scale (7.5 minute) quadrangle topographic maps prepared by the United States Geologic Survey (USGS). An exception to this requirement may be allowed when surface waters are not present in accordance with the provisions of 15A NCAC 2B .0233 (3)(a); and (V) The permit shall require recorded deed restrictions and protective covenants to ensure that development activities maintain the development consistent with the approved project plans; 7.5.3 Non-Structural BMP’s The receiving streams in the City’s watershed are classified as Nutrient Sensitive Waters; therefore the amended ordinance shall also ensure that the best management practice for reducing nutrient loading is implemented. In addition, a nutrient application (both inorganic fertilizer and organic nutrients) management program shall be developed and included in the stormwater management program. 7.5.4 Structural BMPs Standards and policies will be developed that ensure structural BMPs will be in conformance with the state’s Stormwater Management Design Manual. 7.5.5 Regulatory Mechanism The City will annually assess existing ordinances, policies, programs and studies that address storm water runoff quality. In addition to assessing these existing documents and programs, the City will provide opportunities to the public to participate in the development of the program. . 7.5.6 Operation and Maintenance The existing land usage ordinance will be amended to address the long-term operation and maintenance of post-construction controls. The amended ordinance COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 24 will include guidelines for delegating routine and non-routine maintenance responsibilities to ensure access for inspections, and providing a mechanism for enforcement. 7.5.7 Decision Process The post construction stormwater management program shall ensure that controls are in place that will prevent or minimize water quality impacts from new development and redevelopment projects. These controls should include an amended ordinance to address post-construction runoff control from new development and redevelopment projects and ensure adequate long-term operation and maintenance of BMPs. 7.5.8 Evaluation The post construction site management for new and re-development activities program will be evaluated based on how each individual BMP is meeting its measurable goal at the end of each reporting period. Changes will be considered for any BMPs that are not meeting the measurable goals. COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 25 7.6 POLLUTION PREVENTION/GOOD HOUSEKEEPING FOR MUNICIPAL OPERATIONS 7.6.1 BMP Summary Table BMP Measurable Goals YR 1 YR 2 YR 3 YR 4 YR 5 Responsible Position/Party Maintain Inventory and O&M Manual of Municipal Facilities and Operations Maintain, update, inspect annually all Municipal Facilities and update as needed Operation and Maintenance Manual for every facility and operation. X X X X X City Public Services Director Spill Response Procedures Maintain or create spill response procedures for all municipally owned or operated facilities X X X X X City Public Services Director Streets, Roads, and Public Parking Lots Maintenance Program Maintain Implementation of BMP’s. and evaluate annually those that reduce polluted stormwater runoff from city owned parking lots, streets and roads for cost and effectiveness. X X X X X City Public Services Director Staff Training Maintain an employee training program for employees involved in pollution prevention and good housekeeping practices.. X X X X X City Public Services Director Identify, inspect and maintain municipally owned Structural Stormwater Controls Continue to implement/and maintain the O&M Program for municipally-owned or maintained structural stormwater controls. Document inspections and maintenance X X X X X City Public Works Director Pesticide, Herbicide and Fertilizer Application Management Ensure municipal employees and contractors are properly trained and all permits, certifications, and other measures for applicators are followed. X X X X X City Public Services Director City Vehicle and Equipment Washing Maintain measures to minimize or prevent contamination of stormwater runoff from all areas used for vehicle and equipment cleaning. X X X X X City Public Services Director Spill Response Procedures Maintain or create spill response procedures for all municipally owned or operated facilities. X X X X X City Public Services Director COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 26 7.6.2 Affected Operations The City of Roxboro operates a municipal building, 3 fire stations, a police department, public works department, water treatment plant, wastewater treatment plant, and 11 sewer pump stations. Operations at all of the affected operations will be reviewed during the permit cycle. 7.6.3 Training Training materials will be maintained on pollution prevention for public facilities, using similar materials as will be used in the public outreach program. All employees will be educated annually on the need for controls to protect stormwater from exposure to potential pollutants. This training will also serve as the training requirement for public employees as specified in the outreach component of the Illicit Discharge section of this program. All public employees involved in vehicle, open space, or building maintenance operations will be provided training in BMPs, processes and materials they are working with, safety hazards, practices for preventing discharges, and procedures for responding quickly and properly to toxic and hazardous material incidents. This training will be in conjunction with the training requirements of the future Spill Prevention, Control, and Countermeasures plan. All public employees involved in stormwater drainage system maintenance will be specifically trained in the disposal of floatables, grit, sediment, and other pollutants removed from the system. Additional training, or certification, will be provided to employees that manage and apply chemicals for control of dust, pests, vermin, and weeds and/or to enhance the growth or condition of public urban landscape and recreation facilities. Training will target the safe and effective application, storage and disposal of chemicals used. 7.6.4 Maintenance and Inspections The Preventive maintenance program will be continued and will include routine inspections of catch basins, storm water detention areas, and water quality treatment systems. A similar program will be maintained for vehicles, equipment, and material storage areas in the maintenance yard. Inspections will ensure all equipment and material storage containers are in good condition. Any problems or issues that may have an impact on stormwater quality will be noted and corrective action taken. Vehicle washing and fueling operations will be inspected annually to ensure that they are in good working order and that they minimize exposure of stormwater to chemicals, fuels, and other liquids. Schedules and procedures will be established for the inspections, and an organized record- keeping system will be implemented to schedule and document inspections. COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 27 7.6.5 Vehicular Operations All vehicles, equipment, and associated material are stored in covered facilities. The vehicle and equipment washing operation currently employs a sediment removal device within the wash bay. The City also uses a vacuum street sweeper to regularly clean City roads and parking lots. The collected debris is temporarily stored in an uncovered area at the waste water treatment plant, before transfer to the landfill. As part of the stormwater management plan, other pollution reduction measures (such as installation of a oil/water separator for the wash bay or covering the temporary storage area) will be evaluated and implemented. 7.6.6 Waste Disposal Debris and floatables collected from the MS4 are temporarily stored in an uncovered area at the maintenance facility before transfer to the landfill. Garbage, yard waste, and heavy garbage collection are collected by the City. Used oil from vehicle and equipment maintenance operations is stored onsite and periodically collected by a certified oil recycler. 7.6.7 Flood Management Projects Future flood management projects will be reviewed from a water quality standpoint. 7.6.8 Decision Process The most effective and practical BMPs for minimizing stormwater pollution were selected for this program. 7.6.9 Evaluation The pollution prevention/good housekeeping for municipal operations program will be evaluated based on how each individual BMP is meeting its measurable goal at the end of each reporting period. Changes will be considered for any BMPs that are not meeting the measurable goals. COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 28 7.7 TOTAL MAXIMUM DAILY LOADS (TMDL) 7.7.1 BMP Summary Table BMP Measurable Goals YR 1 YR 2 YR 3 YR 4 YR 5 Responsible Position/Party Establish if a TMDL exists on a receiving water of the MS4 Verify TMDL’s annually. X X X X X City Public Services Director Identify, Describe, and Map watershed, outfalls, and streams. Identify watershed WLA for stormwater, describe watershed, map watershed, identify location of major outfalls in watershed, identify impaired streams in watershed, and identify schedule to discover and locate other possible contributing sources. X City Public Services Director Existing Measures Create Water Quality Recovery Program. X City Public Services Director Monitoring Plan Create and submit to NC DWQ a monitoring program for each pollutant of concern in the TMDL. X City Public Services Director Additional Measures Additional measures that improve water quality may be started at anytime. X X X City Public Services Director Implementation Plan Determine final implementation schedule, including when in the permit additional items will be implemented. X City Public Services Director Incremental Success Determine if and/or how incremental success will be measured. X City Public Services Director Annual Assessment Submit Annual Report on program to DWQ X X X X X City Public Services Director COMPREHENSIVE STORMWATER MANAGEMENT PROGRAM REPORT CITY OF ROXBORO Page 29 7.7.2 Determination of TMDL’s A TMDL on a receiving water with a stormwater Waste Load Allocation (WLA) will trigger the need for compliance with this section of the CSWMP. A TMDL with no WLA will not require a Water Quality Recovery Plan, but rather the need to evaluate existing strategies and if any can be tailored or expanded to improve the water quality in the TMDL watershed. 7.7.3 Establishing a Water Quality Recovery Plan Based on the above schedule the City of Roxboro would begin creating a Water Quality Recovery Plan (WQRP) within 12 months of establishment of the TMDL, would have evaluated existing measures within 24 months, developed a monitoring plan within 36 months, and would be implementing or have planned for implementation within 48 months. The WQRP would be submitted and approved by NC DWQ and EPA. 7.7.4 Decision Process TMDL planning and implementation will be done in an effort to improve water quality and with the approval of NC DWQ staff. 7.7.5 Evaluation Progress toward restoring water quality standards will be difficult to determine and most evaluation tools will be based upon programs rather than through water quality monitoring or water quality improvements. While the goal of a WQRP is to improve water quality standards, the NPDES MS4 permit obligation is to reduce non-point source pollutant loading to the maximum extent practicable (MEP). The MS4 is not required to meet water quality standards. Evaluation of successful techniques will be evaluated over time, probably multiple permit cycles.