SW3191001_O+M Agreement_11/5/2019

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Project Name: Poplin Meadows Phase II
Project Location: 5922 Bonterra Village Way, Indian Trail, NC 28079
Cover Page
M,'iintenance records shall be kept on the following BMP(s). This maintenance record shall be kept in a log in a known set
ocation. 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 & corre
Bioretention Cell
Quantity:
Dry Detention Basin
Quantity:
Grassed Swale
Quantity:
Green Roof
Quantity:
--
Infiltration Basin
Quantity:
Infiltration Trench
Quantity:
Level Spreader/VFS
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 be added automatically}
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): Western corner of site
Location(s):
Location(s):
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:
Dennis Moser on behalf of
uid Manaaement. LLC
Developer
231 Post Office Drive, Suite B-8
Indian Trail, NC 28079
704 882 1700
[e-mail]
Signature: _ Date: l0 • ZZ - rq
a Notary Public for the State of
County of f Iu do hearby certify that ))eAy_tt, f k( #-0SG/
personally appeared before me this Z day of and Z019
acknowledge the due execution of the erations and Maintenance Agreement .
VVitness my hand and official seal,
RAENAE H. LITTL t
NOTARY PUBLIC
Stanly County
North caroling 16 2022
My Commission Expires Aprl
P.M.41Tz
AA%i cnmmiectnn AvnirAC
10/21 /:

RM-EZ 10/21 /.

wei uetention rono maintenance mequirements
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the vegetated filter if
one is provided.
Important 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 detention pond should be fertilized after the first initial fertilization that is required to
establish the plants on the vegetated shelf.
_ Stable groundcover should be maintained in the drainage area to reduce the sediment load to the wet detention
basin.
If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through the
emergency drain should be minimized to the maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month 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 should be kept in a
known set location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately.
BMP element: Potential problem:
The entire BMP Trash/debris is present.
The perimeter of the BMP Areas of bare soil and/or
erosive gullies have formed.
Vegetation is too short or too
long.
The inlet device The pipe is clogged.
The pipe is cracked or
otherwise damaged.
The forebay
The vegetated shelf
How I will 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.
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
covered in sediment (if
applicable).
Sediment has accumulated to
a depth greater than the
original design depth for
sediment storage.
Erosion has occurred.
Weeds are present.
Best professional practices
show that pruning is needed
to maintain optimal plant
health.
Plants are dead, diseased or
dying.
Weeds are present.
Remove sediment and replace with clean stone.
Search for the source of the sediment and remedy the problem if
possible. Remove the sediment and dispose of it in a location where it
will not cause impacts to streams or the BMP.
Provide additional erosion protection such as reinforced turf matting or
riprap if needed to prevent future erosion problems.
Remove the weeds, preferably by hand
the plants rather than spraying.
If pesticide is used, wipe it on
Prune according to best professional practices
Determine the source of the problem: soils, hydrology, disease, etc.
Remedy the problem and replace plants. Provide 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, wipe it on
the plants rather than spraying.
RM-EZ 10/21 /.

Wet Detention Pond Maintenance Requirements Continued
The main treatment area Sediment has accumulated to Search for the source of the sediment and remedy the problem if
a depth greater than the possible. Remove the sediment and dispose of it in a location where it
original design sediment will not cause impacts to streams or the BMP.
storage depth.
The embankment
The outlet device
Algal growth covers over 50% (Consult a professional to remove and control the algal growth.
of the area.
Cattails, phragmites or other Remove the plants by wiping them with pesticide (do not spray).
invasive plants cover 50% of
the basin surface.
Shrubs have started to grow (Remove shrubs immediately.
on the embankment.
Evidence of muskrat or Use traps to remove muskrats and consult a professional to remove
beaver activity is present. beavers.
A tree has started to grow on
the embankment.
An annual inspection by an
appropriate professional
shows that the embankment
needs repair. (if applicable)
Clogging has occurred.
Consult a dam safety specialist to remove the tree.
Make all needed repairs.
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.
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.
RM-EZ 10/21 /1

Wet Detention Pond Design Summary
Wet pond DiaA!,pni
WET POND ID FOREBAY MAIN POND
1 Permanent Pool El. 626.5 Permanent Pool El. 626.5
Temporary Poo$ El: 627.94 Temporary Pool El- 627.94
Pretreatment other Clean Out Depth_ 4 Clean Out Depth: 5.5
than forebay? No
Sediment Removal El: 622.5 Sediment Removal El.* 621
Has Veg. Filter? Yes Bottom Elevation: 1 622 j Bottom Elevation: 620.5
RM-EZ 10/21 /: