SW5240104_O&M Agreement/Plan_20240206

Operation & Maintenance Agreement
Project Name: Green Hill Subdivision
Project Location: NC Hwy 39, Louisburg, NC
Cover Page
Maintenance records shall be kept on the following BMP(s). This maintenance record shall be kept in a log in a known set location
Any deficient BMP 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 BMP(s).
The BMP(s) on this project include (check all that apply& corresponding O&M tables will be added automatically)
Bioretention Cell Quantity: Location(s):
Dry Detention Basin Quantity: Location(s):
Grassed Swale Quantity: Location(s):
Green Roof Quantity: Location(s):
Infiltration Basin Quantity: Location(s):
Infiltration Trench Quantity: Location(s):
Level Spreader/VFS Quantity: Location(s):
Permeable Pavement Quantity: I nr.. tion(s)•
Proprietary System Quantity: Location(s):
Rainwater Harvesting Quantity: Location(s):
Sand Filter Quantity: Location(s):
Stormwater Wetland Quantity: 6 Location(s): See Plans
Wet Detention Basin Quantity: 0 Location(s):
Disconnected Impervious Area Present: No Location(s):
User Defined BMP Present: No Location(s):
CLICK TO UPDATE O&M MANUAL
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for
each BMP above, and attached O&M tables. I agree to notify NCDENR of any problems with the system or prior to any changes to
the system or responsible party.
* Responsible Party: Michael A. Moss
Title & Organization: Manager, Green Hill Drive, LLC
Street address: 140 E Main St
City, state, zip: Youngsville, NC 27596
Phone number(s): 919-398-3618
Email: [e-mail]
Signature Date:
on M , a Notary Public for the State of 1\10atioVincL
County of W(0(,� , do hearby certify that Lhc I\.. moss
personally appeared before me this I10- day of umber aoa3 and
acknowledge the due execution of the Operations and Maintenance Agreement
Witness my hand and official seal, GJ`Oti,
M1F�+p
FCwA
SealV .ert`" My commission expires 3I 1 a4 19a,
n CQU
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Version 1.4 O&M Manual Page 1 of 3

Stormwater Wetland Maintenance Requirements
Important maintenance procedures:
Immediately following construction of the stormwater wetland, bi-weekly inspections will be conducted and
wetland plants will be watered bi-weekly until vegetation becomes established (commonly six weeks).
No portion of the stormwater wetland will be fertilized after the first 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.
- Once a year, a dam safety expert should inspect the embankment
After the stormwater wetland is established, it shall be inspected monthly 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 will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately
.BMP element: Potential problem: How I will remediate the problem:
lEntire BMP Trash/debris is present. Remove the trash/debris
The perimeter of the BMP Areas of bare soil and/or Regrade the soil if necessary to remove the gully, and then plant a
erosive gullies have formed ground cover and water until it is established. Provide lime and a one-
time fertilizer application.
Vegetation is too short or too Maintain vegetation at a height of approximately six inches.
long.
Forebay Sediment has accumulated in Search for the source of the sediment and remedy the problem if
the forebay to a depth that possible. Remove the sediment and dispose of it in a location where it
inhibits the forebay from will not cause impacts to streams or the BMP.
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 a pesticide is used, wipe it
on the plants rather than spraying.
The inlet device The pipe is clogged. Unclog the pipe. Dispose of the sediment off-site
The pipe is cracked or Replace the pipe.
otherwise damaged.
Erosion is occurring in the Regrade the swale if necessary to smooth it over and provide erosion
swale. control devices such as reinforced turf matting or riprap to avoid future
problems with erosion.
Stone verge is clogged or Remove sediment and replace with clean stone.
covered in sediment(if
applicable).
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Version 1.4 O&M Manual Page 2 of 3

Stormwater Wetland Maintenance Requirements (Continued)
Deep pool,shallow water Algal growth covers over 50% Consult a professional to remove and control the algal growth.
and shallow land areas of the deep pool and shallow
water areas.
Cattails, phragmites or other Remove invasives by physical removal or by wiping them with pesticide
invasive plants cover 50% of (do not spray)—consult a professional.
the deep pool and shallow
Shallow land remains flooded Unclog the outlet device immediately.
more than 5 days after a
storm event.
Plants are dead, diseased or Determine the source of the problem: soils, hydrology, disease, etc.
dying. Remedy the problem and replace plants. Provide a one-time fertilizer
application to establish the ground cover if necessary.
Best professional practices Prune according to best professional practices.
show that pruning is needed
to maintain optimal plant
Sediment has accumulated Search for the source of the sediment and remedy the problem if
and reduced the depth to 75% possible. Remove the sediment and dispose of it in a location where it
of the original design depth of will not cause impacts to streams or the BMP.
Embankment A tree has started to grow on Consult a dam safety specialist to remove the tree
the embankment.
An annual inspection by Make all needed repairs.
appropriate professional
shows that the embankment
Evidence of muskrat or Consult a professional to remove muskrats or beavers.
beaver activity is present.
Micropool Sediment has accumulated Search for the source of the sediment and remedy the problem if
and reduced the depth to 75% possible. Remove the sediment and dispose of it in a location where it
of the original design depth. will not cause impacts to streams or the BMP.
The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site.
The outlet device is damaged Repair or replace the outlet device.
The receiving water Erosion or other signs of Contact the local NC Department of Environment and Natural
damage have occurred at the Resources Regional Office.
outlet.
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Version 1 4 O&M Manual Page 3 of 3