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HomeMy WebLinkAbout04_Municipal SCM Operation and Maintenance PlanTown of Carolina Beach Municipal SCM Operation and Maintenance Plan a COW Introduction: This manual shall serve as guidance for staff maintaining Town owned stormwater control measures. Maintenance is the activity that ensures that SCM's remain in proper working order, able to improve water quality at an effective level into the future. Below is a list of action items and frequencies for the various types of control measures that are maintained by the Town Stormwater Department. These activities should be recorded for documentation purposes. Any noted deficiencies should be brought to attention of Management in an effort to remedy the problem. For expanded further guidance, please reference the SCM Design Manual, put forth by the NC DEQ. Inventory of Facilities Facility Stormwater System Features Discharge To Streets and Surfaces, Inlets, Detention Cape Fear River, ICW Parking Lots areas, smart sponges, silt sacks Conveyances Pipes, Catch Basins, Swales, Cape Fear River, ICW Ditches, Outflows, Sedimentation Chambers, check dams Ponds Riparian areas, Overflow, Cape Fear River, ICW Forebays, Retention area Buildings and Rain Barrels, Inlets, Outdoor Cape Fear River, ICW Town Property shower detention Pump Stations Diesel pumps, electric pumps, Cape Fear River, ICW trash racks, wet wells Operation and Maintenance Actions Streets and Parking Lots Feature Frequency Actions Additional Considerations Surfaces Daily to • Run street sweeper biannual • Remove sand in problem areas by hand Inlets Monthly • Remove debris from grates Additional maintenance as • Trim surrounding vegetation needed due to rain events • Clean trash racks • Clean silt sacks • Clean smart sponges Detention areas Quarterly • Remove debris and unwanted Some areas fall under vegetation landscaping contract. Replace medium as needed Conveyances Feature Frequency Actions Additional Considerations Pipes Biennial • Vactor sediment and debris More frequent cleaning in areas as needed. Ditches and Monthly • Remove debris Some areas fall under Swales • Mow, trim landscaping contract. Re -profile ditches as needed Check dams Quarterly • Remove debris Re -build as needed Catch Basins Biennially • Remove debris and sediment Additional maintenance as needed Sedimentation Quarterly • Vactor sediment and debris Chambers Outflows Quarterly • Clean check valves and duck bills Retention Ponds Feature Frequency Actions Additional Considerations Retention area Weekly to • Remove vegetative overgrowth Repair forebay dam as quarterly . Treat water to prevent algae and needed aquatic grasses • Remove trash and debris Riparian area Monthly • Remove trash and debris Some areas fall under • Mow and trim landscaping contract Overflow Monthly • Remove trash and debris from trash racks and spillways • Reprofile spillways as needed Pump Stations Feature Frequency Actions Additional Considerations Diesel pumps Daily • Check fluids, inspect belts and hoses • Check suction strainer Follow manufacturers maintenance schedule Electric Pumps Weekly • Check control panel cooling system • Check runtime logs Wet wells Weekly • Check for debris Trash racks Weekly • Remove trash and debris Town Buildings and Facilities Feature Frequency Actions Additional Considerations Rain barrels Monthly • Check for inflow and outflow obstruction • Remove trash and unwanted vegetation surrounding recessed beds Inlets Monthly • Remove trash and debris Additional maintenance as needed due to rain events Outdoor shower Weekly(seasonal) • Remove excess sand from decking Replace French drain detention • Clear driveway grates of sand medium as necessary • Clean sand trap