SW6200704_O&M Agreement_20200730

Operation & Maintenance Agreement
Project Name: I Cypress Pointe
Project Location: Fennell Road, Hope Mills, 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 & cc
Bioretention Cell
Quantity:
Dry Detention Basin
Quantity:
Grassed Swale
Quantity:
Green Roof
Quantity:
Infiltration Basin
Quantity:
Infiltration Trench
Quantity:
Level SpreaderNFS
Quantity:
Permeable Pavement
Quantity:
Proprietary System
Quantity:
Rainwater Harvesting
Quantity:
Sand Filter
Quantity:
Stormwater Wetland
Quantity:
Wet Detention Basin
Quantity:
Disconnected Impervious Area
Present:
User Defined BMP
Present:
onding O&M tables will
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
De aaaea automaticall
Fennell Road
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:
Title & Organization:
Street address:
City, state, zip:
Phone number(s):
Email:
Palmer N. Williams
Vice President, Pelican Property Hold!
2709 Thorngrove Court
Fayetteville, NC 28303
910-864-3232
[e-mail]
, LLC
Signature: �t��-._ �% (� Date: • 21,20
I,fM Its ' I G'�■s a Notary Public for the State of �1D �GWv�wQ
County of CIJKLjQ//-{pbtG�i do hearby certify that Rz(yt1W u l �(IGLwts
personally appeared before me this 12 day of It) CIA, Zo 2v and
acknowledge the due execution of the Ope tions and Maintenance Agreement.
Witness my hand and official seal,
1A n 6#-mV 'ge. si9
O&M Manual
E�K Pt" wcs : of-?p?y29-
7/16/2020
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Dry Detention Pond Maintenance Requirements
Important maintenance procedures:
- The drainage area will be managed to reduce the sediment load to the dry extended detention basin.
- Immediately after the dry extended detention basin is established, the vegetation will be watered twice weekly if needed
until the plants become established (commonly six weeks).
- No portion of the dry extended detention pond will be fertilized after the first initial fertilization that is required to establish
the vegetation.
The vegetation in and around the basin will be maintained at a height of approximately six inches.
- If cracks, seepage, or woody vegetation is present, consult a dam safety expert for a dam inspection.
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 dry detention basin is established, it will be Inspected quarterly. Inspection activities shall be performed as follows and
any problems identified will be remediated immediately per the table below.
BMP element:
The entire BMP
The perimeter of the BMP
The inlet device
The forebay
Potential problem:
Trash/debris is present.
Areas of bare soil and/or
erosive gullies have formed.
Vegetation is too short or too
long.
The pipe is clogged.
The pipe is cracked or
otherwise damaged.
Erosion is occurring in the
swale.
Stone verge is clogged or
covered in sediment (if
applicable).
Trash/debris is present.
Erosion has occurred or
riprap is displaced.
Weeds are present.
How to remediate the problem:
Remove the trash/debris.
Regrade the soil if necessary to remove the gully, and then plant a
ground cover and water until it is established. Provide lime and a one-
time fertilizer application.
Maintain vegetation at a height of approximately six inches.
Unclog the pipe. Dispose of the sediment off -site.
Replace the pipe.
Regrade the swale if necessary to smooth it over and provide erosion
control devices such as reinforced turf matting or riprap to avoid future
problems with erosion.
Remove sediment and replace with clean stone.
Remove the trash/debris.
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 pesticides are used, wipe
them on the plants rather than spraying.
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Dry Detention Pond Maintenance Requirements continued
BMP element:
The main treatment area
The embankment
The outlet device
The receiving water
Potential problem: How to remediate the problem:
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 Twill not cause impacts to streams or the BMP. Revegetate disturbed
(per pond design data sheet) areas immediately with sod (preferred) or seed protected with securely
staked erosion mat.
Water is standing more than 5 Check outlet structure for clogging. If it is a design issue, consult an
days after a storm event. appropriate professional.
Weeds and noxious plants Remove the plants by hand or by wiping them with pesticide (do not
are growing in the main spray).
treatment area.
Shrubs or trees have started Remove shrubs or trees immediately.
to grow on the embankment.
Grass cover is unhealthy or I Restore the health of the grass cover — consult a professional if
eroding.
Signs of seepage on the
downstream face.
Evidence of muskrat or
beaver activity is present.
An annual inspection by an
appropriate professional
shows that the embankment
needs repair.
Clogging has occurred.
The outlet device is damaged
Erosion or other signs of
damage have occurred at the
outlet.
necessary.
Consult a professional.
Use traps to remove muskrats and consult a professional to remove
beavers.
Make all needed repairs.
Clean out the outlet device. Dispose of the sediment off -site.
Repair or replace the outlet device.
Contact the local NC Department of Environment and Natural
Resources Regional Office.
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Dry Detention Pond Design Summary
DRY POND ID FOREBAY MAIN POND
Basin 1 Temporary Pool El: 128.5 Temporary Pool El: IM
Clean Out Depth- 2 Clean Out Depth:Pretreatment Yes Sediment Storage El: 126.5 Sediment Storage El:Has Veg. Filter N❑ Bottom Elevation. 125 Bottom Elevation:
DRY POND ID FOREBAY MAIN POND
Basin 2 Temporary Pool El: 123.5 Temporary Pool El: 123.5
Clean Out Depth: 1.25 Clean Out �Depth:2
1.3
Pretreatment Yes Sediment Storage El: 2.25 Sediment Storage El: 122.2
Has Veg. Filter No Bottom Elevation: 121 Bottom Elevation: 121
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Version 1.4 O&M Manual Pape 5 of 5