SW6230805_O&M Agreement/Plan_20230831

Operation & Maintenance Agreement
Project Name: Turnberry South Phase 1
Project Location: Royal Birkdale Drive, Hoke 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: 1 Location(s): Lots 280-281
Wet Pond Quantity: 1 Location(s): Lots 294-300
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: 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: D. Ralph Huff Ill
Title & Organization: Registered Agent I Turnberry Huff LLC
Street address: 2919 Breezewood Avenue, Suite 100
City, state. zip: Fayetteville, NC 28303
Phone nu er(s): 910-302-3608
ail: D Huff@.Huf-fam' y .com
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Signature: Date: Ju I I, do ei
y
I, Arni clQ.'rr\4- , a tary Public for the State of nJ C
County of Cl,try\6vAa,ol , do her certify that 1 . 2a1,1,, i-luf r -
personally appeared before me this 13 day of aD a3 and
acknowledge the due execution of the Operations and Maintenance Agreement .
Witness my hand and official seal, S .
t.t0TAIRy
MY7.
= COMMISSION EXPIRES
/4/2028
"G'L� '°'UBLIG *
Seal �,„'''Aln�,it"`� My commission expires bilq I di
STORM-EZ 7/712023
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 (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 future
swale (if applicable). 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.
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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
50% of the area. Consult a professional to remove and control the algal growth.
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.
or dying. Provide 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
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 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.
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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.
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Wet Detention Pond Design Summary
Wet Pond Diagram
WET POND ID FOREBAY MAIN POND
1 Permanent Pool El. 227 Permanent Pool El. 227
Temporary Pool El: 228.3 Temporary Pool El: 228.3
Pretreatment other No Clean Out Depth: 6 Clean Out Depth: 2.5
than forebay? Sediment Removal E 221 Sediment Removal E 224.5
Has Veg. Filter? No 1 Bottom Elevation: 220 Bottom Elevation: 223.5
ATTACH ADDITIONAL SHEETS IF NECESSARY
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Bioretention Maintenance Requirements
Important operation and maintenance procedures:
Immediately after the bioretention cell is established, the plants will be watered twice weekly if needed
until the plants become established (commonly six weeks).
- Snow, mulch or any other material will NEVER be piled on the surface of the bioretention cell.
- Heavy equipment will NEVER be driven over the bioretention cell.
- Special care will be taken to prevent sediment from entering the bioretention cell.
- Once a year, a soil test of the soil media will be conducted.
Remove top layer of fill media when the pool does not drain quickly. Based on the media specification,
the pool should drain within 24 hours.
After the bioretention cell 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 bioretention Trash/debris is present. Remove the trash/debris.
cell
The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to remove the gully, plant ground
bioretention cell erosive gullies have cover and water until it is established. Provide lime and a one-time
formed, fertilizer application.
The structure is clogged. Unclog the structure and dispose of any sediment off-site.
The flow diversion
structure (if applicable) The structure is damaged. Make any necessary repairs or replace if the damage is too much
for repair.
The inlet pipe is clogged (if Unclog the pipe and dispose of any sediment in a location where it
applicable). will not cause impacts to streams or the SCM.
The inlet pipe is cracked or
otherwise damaged (if Repair or replace the pipe.
applicable).
The inlet device Regrade the swale if necessary and provide erosion control
Erosion is occurring in the devices such as reinforced turf matting or riprap to avoid future
swale (if applicable).
erosion problems.
Stone verge is clogged or Remove sediment and clogged stone and replace with clean
covered in sediment (if
applicable). stone.
Flow is bypassing Regrade if necessary to route all flow to the pretreatment area.
pretreatment area and/or Restabilize the area after grading.
gullies have formed.
Sediment has accumulated Search for the source of the sediment and remedy the problem if
to a depth greater than possible. Remove the sediment and dispose of it in a location
The pretreatment area three inches. where it will not cause impacts to streams or the SCM.
Provide additional erosion protection such as reinforced turf
Erosion has occurred. 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.
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Bioretention Maintenance Requirements (continued)
SCM element: Potential problem: How to remediate the problem:
Best professional practices
show that pruning is Prune according to best professional practices. Maintain lines of
needed to maintain optimal sight between 2'-6'.
plant health.
Determine the source of the problem: soils, hydrology, disease,
etc. Remedy the problem and replace plants. Provide a one-time
Bioretention cell Plants are dead, diseased fertilizer application to establish the ground cover if a soil test
vegetation or dying. indicates it is necessary. If sod was used, check to see that it was
not grown on clay or impermeable soils. Replace sod if
necessary.
Weeds are present. Remove the weeds, preferably by hand. If pesticide is used; wipe
it on the plants rather than spraying.
Tree stakes/wires are
present six months after Remove tree stake/wires (which can kill the tree if not removed).
planting.
Spot mulch if there are only random void areas. Replace whole
Mulch is breaking down or mulch layer if necessary. Remove the remaining mulch and
has floated away. replace with triple shredded hard wood mulch at a maximum
depth of four inches.
Determine the extent of the clogging - remove and replace either
Soils and/or mulch are just the top layers or the entire media as needed. Dispose of the
Bioretention cell mulch spoil in an appropriate off-site location. Use triple shredded hard
and media clogged with sediment. wood mulch at a maximum depth of four inches. Search for the
source of the sediment and remedy the problem if possible.
An annual soil test shows
that pH has dropped or Dolomitic lime shall be applied as recommended per the soil test
heavy metals have and toxic soils shall be removed, disposed of properly and
accumulated in the soil replaced with new planting media.
media.
Clogging has occurred. Wash out the underdrain system.
The underdrain, filter Clean out the drop inlet. Dispose of the sediment in a location
fabric element, and outlet Clogging has occurred. where it will not cause impacts to streams or the SCM..
system
The drop inlet is damaged Repair or replace the drop inlet.
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
bioretention cell are
causing erosion or Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.
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