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Home My WebLink About11 O&M Plan for Municipal SCMsOperation and Maintenance Plan for Municipal Stormwater Control Measures (SCMs) prepared for NPDES # NCS000395, including Mecklenburg County, Charlotte Mecklenburg Schools, Central Piedmont Community College and the Towns of Cornelius, Davidson, Huntersville, Matthews, Mint Hill, and Pineville prepared by Charlotte-Mecklenburg Storm Water Services 2145 Suttle Avenue Charlotte, NC 28208 March 2021 Operation & Maintenance Plan for Municipally Owned SCMs - Permit # NCS000395 Standard Operating Procedure Modification / Review Log Version Effective Date Author Summary of Changes Approved By 1.0 3-1-2021 Rusty Rozzelle Original moved from SWMP Rusty Rozzelle Operation & Maintenance Plan for Municipally Owned SCMs - Permit # NCS000395 Table of Contents Section 1: Introduction ...................................................................................................... 1 Section 2: Inventory of SCMs ........................................................................................... 1 Section 3: Operation and Maintenance of SCMs .............................................................. 3 Section 4: Inspections of SCMs for Permit Compliance .................................................. 3 Tables: Table 1: SCMs Owned and Operated by Mecklenburg County .............................................. 1 Table 2: SCMs Owned and Operated by the Towns................................................................ 2 Table 3: SCMs Owned and Operated by Charlotte Mecklenburg Schools ............................. 2 Table 4: SCMs Owned and Operated by Central Piedmont Community College ................... 2 Attachments: Attachment 1: Operation and Maintenance Programs for Structural Stormwater Controls .... 4 Operation & Maintenance Plan for Municipally Owned SCMs - Permit # NCS000395 1 Section 1: Introduction This Operation and Maintenance (O&M) Plan has been prepared by Charlotte-Mecklenburg Storm Water Services (CMSWS) to describe the O&M measures implemented by the co- permittees, including Mecklenburg County, Central Piedmont Community College (CPCC), Charlotte-Mecklenburg Schools (CMS), and the Towns, for the structural stormwater control measures (SCMs) that they own and/or operate as required in NPDES Permit # NCS000395. This O&M Plan is also provided in Sections 7.4 and 8.8 of Mecklenburg County’s Storm Water Quality Management Program Plan. This O&M Plan addresses the Permit requirements contained in Section G Pollution Prevention and Good Housekeeping for Municipal Operations by describing the actions that will be undertaken by the co-permittees for the long-term operation and maintenance of the SCMs that they own and/or maintain as required by the Post-Construction Ordinance, including frequency of inspections, routine maintenance and record keeping. Section 2: Inventory of SCMs CMSWS maintains a current inventory of the structural SCMs owned and/or operated by the Phase II co-permittees that were installed for compliance with Post-Construction Ordinances. Tables 1 through 4 provide some of the information from this inventory at the project level as of February 9, 2021. Most projects have multiple BMPs. This information is available More detailed information is available upon request. In Table 1 for Mecklenburg County, a row has been added to indicate the County department responsible for maintenance and inspection activities. In Table 2, the added rows indicate the responsible Towns. Table 1: SCMs Owned and Operated by Mecklenburg County Project ID Project Name Project Address Jurisdiction Parcel ID Asset & Facility Management 369255 Double Oaks Family Aquatic Center 2014 Statesville Av Charlotte 7904303 12012 Hickory Grove Branch Library 5935 Hickory Grove Rd Charlotte 9931120 381255 Mecklenburg County Medic Headquarters 4425 Wilkinson Blvd Charlotte 11509101, 11509102, 366854 Second Harvest Food Bank 500 Spratt St Charlotte 7845439 ABC Board 340041 Wilkinson ABC 2915 Wilkinson Blvd Charlotte 11701122 Park & Recreation 233633 Ballantyne District Park Phase 3 10020 Community House Rd Charlotte 22904107, 22904125 430068 Hucks Road Community Park 5435 Hucks Rd Charlotte 2719497 36827 Romare Bearden Park 301 S. Mint St Charlotte 7302301 348439 Mallard Creek Park (Johnston Oehler Elementary School?) 2945 Johnston Oehler Rd Charlotte 2934233 Solid Waste 366855 Compost Central Relocation 6750 Rozzelle’s Ferry Rd Charlotte 3505423 Operation & Maintenance Plan for Municipally Owned SCMs - Permit # NCS000395 2 Table 2: SCMs Owned and Operated by the Towns Project ID Project Name Project Address Jurisdiction Parcel ID Town of Cornelius 47226 Westmoreland Sports Plex 8430 Westmoreland Rd Cornelius 0057118 Town of Huntersville 83 Bradford Park 17005 Davidson-Concord Rd Huntersville 01127109 461673 Huntersville Fire Station #4 8824 McIlwaine Rd Huntersville 01512115 296 Huntersville Town Center 105 Gilead Rd Huntersville 01711615 46426 N. Meck. Park Tennis Courts 16131 Old Statesville Rd Huntersville 01911119 Town of Pineville 322 Town of Pineville Police Dept 427 Main St Pineville 22105115 Table 3: SCMs Owned and Operated by Charlotte-Mecklenburg Schools Project ID Project Name Project Address Jurisdiction Parcel ID 327637 Newell Elementary School Replacement 325 W. Rocky River Road Charlotte 4923103 311236 Grand Oaks Elementary School 15000 Stumptown Road Huntersville 909109 282 Long Creek Elementary School 9213 Beatties Ford Rd Mecklenburg 02306311 200 Bain School 11524 Bain School Road Mint Hill 19701146 11598 Ballantyne Elementary School 15425 Scholastic Lane Charlotte 22309103 400465 CMS Language Immersion K8 School-Albemarle 5471 Central Av Charlotte 10304199 179632 Independence High School 1967 Patriot Drive Mint Hill 10935108 368454 JM Alexander Middle School Replacement 12010 Hambright Road Huntersville 1705112 342838 Nations Ford Elementary Replacement 7050 Nations Ford Rd Charlotte 16712106 343239 Olympic HS Renovations 4301 Sandy Porter Rd Charlotte 20108105 280436 Phillip O Berry Academy of Technology 1430 Alleghany St Charlotte 6714202 192033 Pineville Elementary 204 Lowry Street Pineville 22106440 105 Rocky River High School 10505 Clear Creek Commerce Drive Mint Hill 13731158 236 Sharon Amity Road Pre- K/Elementary School 4835 Shamrock Dr Charlotte 9926105 52426 South Mecklenburg HS Parking Lot 8900 Park Rd. Charlotte 20721133 339639 Statesville Rd Elementary Replacement 5521 Milhaven Ln Charlotte 4118315 344838 West Charlotte High School Track Improvements 2219 Senior Dr Charlotte 6916443 Table 4: SCMs Owned and Operated by Central Piedmont Community College Project ID Project Name Project Address Jurisdiction Parcel ID 380856 CPCC Harper Campus Revision 315 W Hebron St Charlotte 20318529, 20318902 Operation & Maintenance Plan for Municipally Owned SCMs - Permit # NCS000395 3 Project ID Project Name Project Address Jurisdiction Parcel ID 170 CPCC Levine Campus Parking lot Addition 2800 Campus Ridge Road Matthews 21523201 175632 CPCC Cato Campus 8120 Grier Rd Charlotte 10509106 473273 CPCC North Classroom Building 1320 Sam Ryburn Walk Charlotte Section 3: Operation and Maintenance of SCMs New developments constructed by or under contract with the Phase II entities are required to comply with the local Post-Construction Ordinance requirements adopted by the jurisdiction where the project is located, including the City of Charlotte, Mecklenburg County, and the Towns of Cornelius, Davidson, Huntersville, Matthews, Mint Hill, and Pineville. New roads and road expansions interior to land development projects required to comply with post-construction requirements must adhere to these same requirements regardless of whether these roads will be privately maintained or maintained by the jurisdiction. For such projects, the built-upon area for the roads is incorporated into the built-upon area for the project and structural SCMs are installed as necessary to comply with ordinance requirements. Roadway projects constructed by the North Carolina Department of Transportation (NCDOT) are subject to NCDOT’s Post- Construction Program; therefore, these projects are not subject to local Post-Construction Ordinances. The Phase II co-permittees maintain and implement O&M Plans for the SCMs that they own and/or operate for compliance with Post-Construction Ordinance requirements as shown on the approved construction plans or the Declaration of Covenants recorded at the Register of Deeds Office. These Plans specify the frequency of inspections and routine maintenance requirements. The Phase II co-permittees are responsible for inspecting and maintaining their SCMs in accordance with the schedule contained in the O&M Plan. Plans vary based on SCM type. Sample O&M Plans are provided in Attachment 1. Section 4: Inspections of SCMs for Permit Compliance To ensure that all structural SCMs are being maintained pursuant to their O&M Plan, all co- permittees conduct annual inspections of the SCMs that they own and/or operate using a qualified professional. A qualified professional is either a qualified NC professional engineer or registered landscape architect performing services only in their area of competence, or someone who has a valid Stormwater SCM Inspection & Maintenance Certification from NC State University. All inspections of SCMs are documented on an inspection form and submitted to the Storm Water Administrator for review and follow up as necessary. These forms are available at the following link: https://mecklenburgcounty.exavault.com/p/waterquality/PCO%20Forms/BMP_Maintenance_Ins pection_Checklists_PCO21/. For Charlotte-Mecklenburg Schools, Central Piedmont Community College, and the Towns, these inspections are performed by CMSWS staff. Inspections of County owned facilities are the responsibility of the Department that manages the facility where the SCM is located, including Asset and Facility Management, Park and Recreation and the Sheriff’s Department. Operation & Maintenance Plan for Municipally Owned SCMs - Permit # NCS000395 4 Attachment 1: Sample Operation and Maintenance Plans for Structural Stormwater Controls Operation and Maintenance Program for Wet Pond Name of Project: Address: Number of Stormwater Control Measures: Responsible Party: Address of Responsible Party: Task Schedule Forebay inspection and cleanout Monthly inspection. Remove sediment every 7 years or whenever the sediment volume exceeds 50% of storage volume Volume measurement Yearly – Dredging needed every 20 years or when 25% of permanent pool volume has been lost Bank mowing and inspection / stabilization of eroded areas Monthly Outlet / inlet inspection and cleanout Monthly Unwanted vegetation and trash removal Monthly Visual inspection of water quality Monthly Inspect / exercise all mechanical devices, valves, etc. Yearly Inspect for structural damage, leaks, etc. Yearly Rodent management As needed Security As needed Operation and Maintenance Program for Dry Pond Name of Project: Address: Number of Stormwater Control Measures: Responsible Party: Address of Responsible Party: Task Schedule Forebay inspection and cleanout Monthly inspection. Remove sediment every 7 years or when sediment volume exceeds 50% of storage volume Bank mowing and inspection / stabilization of eroded areas Monthly (maintain 3 to 6-inch grass height) Outlet / inlet inspection and cleanout Monthly Unwanted vegetation and trash removal Monthly Inspect for structural damage, leaks, etc. Yearly Inspect / exercise all mechanical devices, valves, etc. Yearly Operation & Maintenance Plan for Municipally Owned SCMs - Permit # NCS000395 5 Evaluate sediment level (remove as needed) Yearly Security As needed Operation and Maintenance Program for Grassed Channel / Enhanced Swale Name of Project: Address: Number of Stormwater Control Measures: Responsible Party: Address of Responsible Party: Task Schedule Mowing Weekly to Monthly (maintain 3 to 6- inch grass height) Inspect condition of dispersion devices and check dams Yearly Trash removal Weekly to Monthly (prior to mowing) Reseed Yearly Stabilization of eroded areas Monthly Removal of sediment Yearly Operation and Maintenance Program for Wetland Name of Project: Address: Number of Stormwater Control Measures: Responsible Party: Address of Responsible Party: Task Schedule Forebay cleanout Monthly inspection. Remove sediment every 7 years or when sediment volume exceeds 50% of storage volume Invasive species control / vegetation management and replanting to maintain design densities Semi-Annual Bank mowing and stabilization of eroded areas Monthly (maintain 3 to 6-inch grass height) Outlet / inlet inspection and cleanout Monthly Trash removal Monthly Inspect for structural damage, leaks, etc. Yearly Visual inspection of water quality Monthly Rodent and mosquito management As needed Evaluate sediment level (remove at 20 yrs. or when plants are being impacted) Yearly Security As needed Operation & Maintenance Plan for Municipally Owned SCMs - Permit # NCS000395 6 Inspect for clogging (enhanced swale) Monthly Inspect pea gravel diaphragm and replace / repair as necessary Monthly Operation and Maintenance Program for Bioretention Name of Project: Address: Number of Stormwater Control Measures: Responsible Party: Address of Responsible Party: Task Schedule Inspect banks and surrounding drainage areas for erosion and stabilize if necessary. Monthly Inspect/Clean Inlets (sediment in pipe, damaged pipe, blockage or erosion) Monthly Inspect/Clean Outlet (blockage, bypass, erosion or damaged) Monthly Perimeter mowing (3 to 6-inch grass height) Monthly Inspect for proper drawdown / clogging Monthly Trash removal Monthly Pruning Yearly Mulch renewal Yearly Mulch replacement Every 3 years Inspect plants, replace as necessary Monthly Test Phosphorus Index of soil media and replace if over 50 Every 2 years Replace pea gravel diaphragm As needed Remove sediment or other organic material As needed Grassed Bioretention Cells only Mow basin to recommended height in alternating patterns to prevent compaction Weekly to bi-weekly during the growing season, as needed other times Light fertilizing to establish healthy roots Only during the first 2 years Aerate and dethatch basin floor Every 2 years Operation and Maintenance Program for Infiltration Structure Name of Project: Address: Number of Stormwater Control Measures: Responsible Party: Address of Responsible Party: Task Schedule Maintain stone or mulch top surface Yearly Clean forebay if present Yearly or at 50% full Trash removal Monthly Remove unwanted vegetation Monthly Operation & Maintenance Plan for Municipally Owned SCMs - Permit # NCS000395 7 Check observation wells following precipitation events to ensure proper infiltration Monthly Operation and Maintenance Program for Filter Strip with Flow Dispersion Name of Project: Address: Number of Stormwater Control Measures: Responsible Party: Address of Responsible Party: Task Schedule Mowing of grass Weekly to Monthly (maintain 3 to 6- inch grass height) Stabilization of eroded areas throughout the filter strip and below the flow dispersion device. Monthly Inspect gravel diaphragm (if present) and remove sediment Yearly Check outlet pipes on berms (if present) for clogging Monthly Remove debris / unwanted vegetation from behind lip of level spreader (if present) Monthly Repair flow dispersion device to prevent formation of channels in filter strip Monthly as needed Reseeding of grass Yearly Operation and Maintenance Program for Sand Filter Name of Project: Address: Number of Stormwater Control Measures: Responsible Party: Address of Responsible Party: Task Schedule Inspect banks and surrounding drainage areas for erosion and stabilize if necessary Monthly Street sweep parking lot Quarterly Trash removal Monthly Inspect outlet for obstructions Monthly Inspect for clogging Monthly Inspect inlet grates Monthly Skim sand media Yearly Pump oil and grit from sediment chamber Yearly or at 50% full Replace sand media As needed (expect 3 years) Grassed Sand Filter Only Operation & Maintenance Plan for Municipally Owned SCMs - Permit # NCS000395 8 Mow basin to recommended height in alternating patterns to prevent compaction and prevent weed growth. Bag clippings to prevent thatch built-up. Weekly to bi-weekly during the growing season, as needed other seasons Light fertilizing to establish healthy roots Only during the first 2 years Aerate and dethatch basin floor Every 2 Years Operation and Maintenance Program for Underground Detention Name of Project: Address: Number of Stormwater Control Measures: Responsible Party: Address of Responsible Party: Task Schedule Inspect inlets and outlets – Remove trash, sediment, debris, and petroleum products for proper disposal Quarterly Inspect sediment chamber – Remove trash, sediment, debris, and petroleum products for proper disposal Quarterly Inspect subsurface detention facility and control structures – Remove trash, sediment, debris, and petroleum products for proper disposal Yearly Inspect / exercise all mechanical devices, valves, etc. – Ensure proper operation Yearly Inspect pipe / vault system – Remove trash, sediment, debris, and petroleum products for proper disposal Yearly Inspect for structural damage, leaks, etc. – Ensure proper operation Yearly