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Home My WebLink AboutSW6220101_O&M Agreement/Plan_20230831 Operation & Maintenance Agreement Project Name: Creekside Oaks South Project Location: Harnett County, NC Cover Page Maintenance records shall be kept on the following SCM(s). This maintenance record shall be kept in a log in a known set location. Any deficient SCM elements noted in the inspection will be corrected, repaired, or replaced immediately. These deficiencies can affect the integrity of structures, safety of the public, and the pollutant removal efficiency of the SCM(s). The SCM(s) on this project include (check all that apply & corresponding O&M sheets will be added automatically): Infiltration Basin Quantity: Location(s): Infiltration Trench Quantity: Location(s): Bioretention Cell Quantity: Location(s): Wet Pond Quantity: 1 Location(s): North east corner of site Stormwater Wetland Quantity: Location(s): Permeable Pavement Quantity: Location(s): Sand Filter Quantity: Location(s): Rainwater Harvesting Quantity: Location(s): Green Roof Quantity: Location(s): Level Spreader- Filter Strip Quantity: Location(s): Proprietary System Quantity: Location(s): Treatment Swale Quantity: Location(s): Dry Pond Quantity: Location(s): Disconnected Impervious Surface Present: No Location(s): User Defined SCM Present: No Location(s): Low Density Present: Yes Type: Dispersed flow only I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for each SCM above, and attached O&M tables. I agree to notify NCDEQ of any problems with the system or prior to any changes to the system or responsible party. Responsible Party: Watson Caviness Title & Organization: Caviness Land Development, Inc - President Street address: 1041B Robeson Street City, state, zip: Fayetteville, NC 28305 Phone number(s): 910-339-6330 Email: watson@cavinessandcates.com Signature: Date: , a Notary Public for the State of County of , do hereby certify that personally appeared before me this day of and acknowledge the due execution of the Operations and Maintenance Agreement . Witness my hand and official seal, Seal My commission expires STORM-EZ 8/31/2023 Version 1.5 O&M Agreement Page 1 of 1 Wet Pond Maintenance Requirements Important operation and maintenance procedures: Immediately after the wet detention basin is established, the plants on the vegetated shelf and - perimeter of the basin should be watered twice weekly if needed, until the plants become established (commonly six weeks). No portion of the wet pond should be fertilized after the initial fertilization that is required to - establish the plants on the vegetated shelf. Stable groundcover will be maintained in the drainage area to reduce the sediment load to the wet pond. If the pond must be drained for an emergency or to perform maintenance, the flushing of sediment - through the emergency drain will be minimized as much as possible. At least once annually, a dam safety expert will inspect the embankment. Any problems that are - found will be repaired immediately. The measuring device used to determine the sediment elevation shall be such that it will give an accurate depth reading and not readily penetrate into accumulated sediments. After the wet pond is established, it will be inspected quarterly and within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County) . Records of operation and maintenance shall be kept in a known set location and shall be available upon request. Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately. SCM element: Potential problem: How to remediate the problem: The entire wet pond Trash/debris is present. Remove the trash/debris. Areas of bare soil and/or Regrade the soil if necessary to remove the gully, plant ground The perimeter of the erosive gullies have cover and water until it is established. Provide lime and a one- wet pond formed. time fertilizer application. The inlet pipe is clogged (if applicable). Unclog the pipe. Dispose of the sediment off-site. The inlet pipe is cracked or otherwise damaged (if Repair or replace the pipe. The inlet device applicable). Regrade the swale if necessary and provide erosion control Erosion is occurring in the devices such as reinforced turf matting or riprap to avoid swale (if applicable). future problems with erosion. Sediment has accumulated to a depth Search for the source of the sediment and remedy the problem greater than the original if possible. Remove the sediment and dispose of it in a design depth for sediment location where it will not cause impacts to streams or the SCM. storage. The forebay Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Remove the weeds, preferably by hand. If pesticide is used, Weeds are present. wipe it on the plants rather than spraying. Wet Pond Maintenance Requirements (Continued) SCM element: Potential problem: How to remediate the problem: Sediment has accumulated to a depth Search for the source of the sediment and remedy the problem greater than the original if possible. Remove the sediment and dispose of it in a design sediment storage location where it will not cause impacts to streams or the SCM. depth. The main treatment area Algal growth covers over Consult a professional to remove and control the algal growth. 50% of the area. g Cattails, phragmites or other invasive plants Remove the plants by wiping them with pesticide (do not cover 50% of the basin spray). surface. Best professional practices show that pruning is needed to Prune according to best professional practices. maintain optimal plant health. The vegetated shelf Determine the source of the problem: soils, hydrology, Plants are dead, diseased disease, etc. Remedy the problem and replace plants. Provide or dying. a one-time fertilizer application to establish the ground cover if a soil test indicates it is necessary. Remove the weeds, preferably by hand. If pesticide is used, Weeds are present. wipe it on the plants rather than spraying. Shrubs have started to Remove shrubs immediately. grow on the embankment. Evidence of muskrat or Consult a professional to remove muskrats or beavers and beaver activity is present. repair any holes or erosion. The embankment A tree has started to grow on the embankment. Consult a dam safety specialist to remove the tree. An annual inspection by an appropriate professional shows that Make all needed repairs immediately. the embankment needs repair. Clogging has occurred. Clean out the outlet device and dispose of any sediment in a gg g location where it will not cause impacts to streams or the SCM. The outlet device The outlet device is damaged. Repair or replace the outlet device. Weeds or volunteer trees are growing on the mat. Remove the weeds or trees. Floating wetland island (if applicable) The anchor cable is damaged, disconnected Restore the anchor cable to its design state. or missing. Wet Pond Maintenance Requirements (Continued) SCM element: Potential problem: How to remediate the problem: Erosion or other signs of damage have occurred at Repair the damage and improve the flow dissipation structure. the outlet. The receiving water Discharges from the wet pond are causing erosion or sedimentation in the Contact the local NCDEQ Regional Office. receiving water. Wet Detention Pond Design Summary Wet Pond Diagram WET POND ID FOREBAY MAIN POND 1 Permanent Pool El. 287 Permanent Pool El. 287 Temporary Pool El: 289.31 Temporary Pool El: 289.31 Pretreatment No Clean Out Depth: 4 Clean Out Depth: 4 other than Sediment Removal E 283 Sediment Removal E 283 Has Veg. Filter? I No Bottom Elevation: 282 Bottom Elevation: 282 ATTACH ADDITIONAL SHEETS IF NECESSARY Low Density Maintenance Requirements Important maintenance procedures: The drainage area to the vegetated conveyance or vegetated receiving area will be carefully managed to reduce the sediment load to the vegetated conveyance or After the initial fertilization to establish the grass in the vegetated conveyance or the vegetated receiving area, fertilizer will not be applied to the vegetated receiving The vegetated conveyance or vegetated receiving area will be inspected quarterly. Records of operation and maintenance will be kept in a known set location and will be available upon request. ,ection activities shall be performed as follows. Any problems that are found shall be repaired immediately. SCM element: Potential problem: How to remediate the problem: Vegetation is too short Maintain grassed vegetation such that the swale or Vegetation vegetated area does not erode during the peak flow or too long. from the 10-year storm aJi I/uCui l' l' Remove the trash/debris. Regrade the soil if necessary to remove the gully, and Vegetated receiving Areas of bare soil then re-sod (or plant with other appropriate species) areas and/or erosive gullies have formed. and water until established. Provide lime and a one- time fertilizer application. Clogging has Clean out the outlet device. Dispose of the sediment occurred. off-site. The outlet device (if applicable) The outlet device is Repair or replace the outlet device. damaged Erosion or other signs Repair the damage and improve the flow dissipation of damage have occurred at the outlet. structure. The receiving water Discharges from the site are causing erosion or Contact the local NCDEQ Regional Office. sedimentation in the receiving water.