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Home My WebLink AboutSW4231201_O&M Agreement/Plan_20231207 Operation & Maintenance Agreement Project Name: Fiddlers Creek Farms Project Location: Wisnton-Salem 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: 0 Location(s): Infiltration Trench Quantity: 0 Location(s): Bioretention Cell Quantity: 0 Location(s): Wet Pond Quantity: 2 Location(s): Located on the West and North West exter Stormwater Wetland Quantity: 1 Location(s): Located on the South East Portion of the s Permeable Pavement Quantity: 0 Location(s): Sand Filter Quantity: 0 Location(s): Rainwater Harvesting Quantity: 0 Location(s): Green Roof Quantity: 0 Location(s): Level Spreader- Filter Strip Quantity:_ 0 Location(s): Proprietary System Quantity: 0 Location(s): Treatment Swale Quantity: 0 Location(s): Dry Pond Quantity: 0 Location(s): Disconnected Impervious Surface Present: No Location(s): User Defined SCM Present: No Location(s): Low Density Present: No Type: 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: Pulte Home Company, LLC Title& Organization: Chris Raughley,VP Land Development Street address: 1225 Crescent Green Drive, Suite 250 City, state, zip: Cary, NC 27518 Phone number(s): 919-816-1161 Email: Chris.Raughley@PulteGroup.com Signature: � 2 a,,,,Y), Date: t t • 2.5.2 S I, S0(`0,1-1.Ga ei✓+rie VI.. 7lJ I'1r7 a Notary Public for the State of NUYiAn Cqi(o111't6‘ County of `)0 '\'101YY1 , do hereby certify that (AY IS - -001 ail v vl personally appeared before me this 'ZCtl day of t\ipeffielVitiv 20 7,-3 and acknowledge the due execution of the Operations and Maintenance Agreement . Witness my hand and official seal, /---- � 7------- ,,- SARAH-CATHERINE W BURNS Notary Public, North Carolina Durham County My Commission Expires July 27,2028 Seal My commission expires ‘j [t/r 71 2 8 STORM-EZ .,i 11/27/2023 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. The perimeter of the wet Areas of bare soil and/or Regrade the soil if necessary to remove the gully, plant ground pond erosive gullies have cover and water until it is established. Provide lime and a one- formed. time fertilizer application. The inlet pipe is clogged Unclog the pipe. Dispose of the sediment off-site. (if applicable). The inlet pipe is cracked or otherwise damaged (if Repair or replace the pipe. The inlet device applicable). Erosion is occurring in the Regrade the swale if necessary and provide erosion control swale (if applicable). devices such as reinforced turf matting or riprap to avoid 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. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, 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. Cattails, phragmites or Remove the plants by wiping them with pesticide (do not other invasive plants cover 50% of the basin surface. spray). 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. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, 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 Consult a dam safety specialist to remove the tree. on the embankment. 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 Repair or replace the outlet device. damaged. Weeds or volunteer trees Remove the weeds or trees. are growing on the mat. Floating wetland island (if applicable) The anchor cable is damaged, disconnected or Restore the anchor cable to its design state. 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 Contact the local NCDEQ Regional Office. or sedimentation in the receiving water. Wet Detention Pond Design Summary Wet Pond Diagram WET POND ID FOREBAY MAIN POND SCM A Permanent Pool El. 804 Permanent Pool El. 803.5 Temporary Pool El: 807.5 Temporary Pool El: 807.5 Pretreatment other No Clean Out Depth: 0.5 Clean Out Depth: 0.5 than forebay? Sediment Removal El 803.5 Sediment Removal El 803 Has Veg. Filter? Yes Bottom Elevation: 804 Bottom Elevation: 803 WET POND ID FOREBAY MAIN POND SCM B Permanent Pool El. 797.5 Permanent Pool El. 797.5 Temporary Pool El: 801.5 Temporary Pool El: 801.5 Pretreatment other No Clean Out Depth: 0.5 Clean Out Depth: 0.5 than forebay? Sediment Removal El 797 Sediment Removal El 797 Has Veg. Filter? Yes Bottom Elevation: 797 Bottom Elevation: 797 ATTACH ADDITIONAL SHEETS IF NECESSARY Stormwater Wetland Maintenance Requirements Important operation and maintenance procedures: Immediately following construction of the stormwater wetland, conduct bi-weekly inspections and water - wetland plants bi-weekly until vegetation becomes established (commonly six weeks). Before and immediately after plant installation, monitor water level and adjust to ensure that plants are not completely inundated. No portion of the stormwater wetland will be fertilized after the initial fertilization that is required to - establish the wetland plants. - Stable groundcover will be maintained in the drainage area to reduce the sediment load to the wetland. At least once annually, a dam safety expert will inspect the embankment. Any problems that are found - will be repaired immediately. After the wetland is established, it shall 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 I will remediate the problem: The entire wetland Trash/debris is present. Remove the trash/debris. The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to remove the gully, plant ground wetland erosive gullies have cover and water until it is established. Provide lime and a one- formed. time fertilizer application. The inlet pipe is clogged (if Unclog the pipe. Dispose of the sediment off-site. applicable). The inlet pipe is cracked or The inlet device otherwise damaged (if Repair or replace the pipe. applicable). Erosion is occurring in the Regrade the swale if necessary and provide erosion control swale (if applicable). devices such as reinforced turf matting or riprap to avoid future problems with erosion. Sediment has accumulated in the forebay to a depth of Search for the source of the sediment and remedy the problem if less than 15" or that inhibits possible. Remove the sediment and dispose of it in a location the forebay from where it will not cause impacts to streams or the SCM. functioning well. The forebay Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or riprap if needed to prevent future erosion problems. Weeds are present. Remove the weeds, preferably by hand. If pesticide is used, wipe it on the plants rather than spraying. Stormwater Wetland Maintenance Requirements (Continued) SCM element: Potential problem: How I will remediate the problem: A tree has started to grow If the tree is <6" in diameter, remove the tree. If the tree is >6" in on the embankment. diameter, consult a dam safety specialist to remove the tree. An annual inspection by an Embankment appropriate professional shows that the Make all needed repairs immediately. embankment needs repair. Evidence of muskrat or Consult a professional to remove muskrats or beavers and repair beaver activity is present. any holes or erosion. Algal growth covers over 30% of the deep pool and Consult a professional to remove and control the algal growth. shallow water areas. Cattails, phragmites or other invasive plants cover Remove the plants by hand or by wiping them with pesticide (do 30% of the deep pool and not spray) - consult a professional. shallow water areas. The temporary inundation zone remains flooded more Unclog the outlet device immediately. than 5 days after a storm event. Deep pool, shallow water and shallow land areas Plants are dead, diseased Determine the source of the problem: soils, hydrology, disease, or d in etc. Remedy the problem and replace plants. Provide a one-time y g fertilizer application to establish the ground cover if necessary. Best professional practices show that pruning is Prune according to best professional practices. needed to maintain optimal plant health. Sediment has accumulated Search for the source of the sediment and remedy the problem if and reduced the depth to possible. Remove the sediment and dispose of it in a location 75/° of the original design where it will not cause impacts to streams or the SCM. depth of the deep pools. Sediment has accumulated Search for the source of the sediment and remedy the problem if Micropool and reduced the depth to possible. Remove the sediment and dispose of it in a location 75/° of the original design where it will not cause impacts to streams or the SCM. depth. Clogging has occurred. Clean out the outlet device. Dispose of the sediment in a location gg g where it will not cause impacts to streams or the SCM. The outlet device The outlet device is Repair or replace the outlet device. damaged Stormwater Wetland Maintenance Requirements (Continued) SCM element: Potential problem: How I will 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 wetland are causing Contact the local NCDEQ Regional Office. erosion or sedimentation in the receiving water.