SW6201201_1641-O&M wet pond_20201210

Operation & Maintenance Agreement
Project Name:
Project Location:
Static Line Brewery
Amarillo Lane, Harnett 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 & cc
Infiltration Basin
Quantity:
Infiltration Trench
Quantity:
Bioretention Cell
Quantity:
Wet Pond
Quantity:
Stormwater Wetland
Quantity:
Permeable Pavement
Quantity:
Sand Filter
Quantity:
Rainwater Harvesting
Quantity:
Green Roof
Quantity:
Level Spreader - Filter Strip
Quantity:
Proprietary System
Quantity:
Treatment Swale
Quantity:
Dry Pond
Quantity:
Disconnected Impervious Surface
Present:
User Defined SCM
Present:
Low Density
Present:
onding O&M sheets will
Location(s):
Location(s):
Location(s):
1 Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
No Location(s):
No Location(s):
No Type:
ae aaaea automatica
Iwest end of iDroiect I
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:
Title & Organization:
Street address:
City, state, zip:
Phone number(s):
Email:
Signature
County of
personally appeared before me this
Williams S. Wellons
President - Wellco Contractors, Inc.
211 Hwy 210 North
Spring Lake, NC 28390
910-436-3131
[e-mail]
, a Notary Public for the State of
, do hereby certify that
day of
acknowledge the due execution of the Operations and Maintenance Agreement .
Witness my hand and official seal,
Date:
and
Seal
My commission expires
STORM-EZ 12/10/2020
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
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
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.
ection 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
Remove the trash/debris.
Areas of bare soil
Regrade the soil if necessary to remove the gully,
The perimeter of the
and/or erosive gullies
plant ground cover and water until it is established.
wet pond
have formed.
Provide lime and a one-time fertilizer application.
The inlet pipe is
clogged (if
Unclog the pipe. Dispose of the sediment off -site.
cracked or otherwise
Repair or replace the pipe.
The inlet device
damaged (if
Erosion is occurring in
Regrade the swale if necessary and provide erosion
the swale (if
control devices such as reinforced turf matting or
applicable).
riprap to avoid future problems with erosion.
Sediment has
Search for the source of the sediment and remedy the
accumulated to a
problem if possible. Remove the sediment and
depth greater than the
dispose of it in a location where it will not cause
original design depth
impacts to streams or the SCM.
The forebay
for sediment storage.
Provide additional erosion protection such as
Erosion has occurred.
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
Search for the source of the sediment and remedy the
accumulated to a
problem if possible. Remove the sediment and
depth greater than the
dispose of it in a location where it will not cause
original design
impacts to streams or the SCM.
The main treatment
sediment stora e
Algal growth covers
Consult a professional to remove and control the algal
area
over 50% of the area.
growth.
Cattails, p ragmi es or
other invasive plants
Remove the plants by wiping them with pesticide (do
cover 50% of the
not spray).
basin surface.
Best professional
practices show that
pruning is needed to
Prune according to best professional practices.
maintain optimal
plant health.
Determine the source of the problem: soils,
The vegetated shelf
Plants are dead,
hydrology, disease, etc. Remedy the problem and
diseased or dying.
replace plants. Provide a one-time fertilizer
application to establish the ground cover if a soil test
Remove the weeds, preferably by hand. If pesticide is
Weeds are present.
used, wipe it on the plants rather than spraying.
Shrubs have started to
grow on the
Remove shrubs immediately.
embankment.
Evidence of muskrat or
Consult a professional to remove muskrats or beavers
beaver activity is
and repair any holes or erosion.
A tree has started to
Consult a dam safety specialist to remove the tree.
The embankment
grow on the
An annual inspection
by an appropriate
professional shows
Make all needed repairs immediately.
that the embankment
needs re air.
Clean out the outlet device and dispose of any
Clogging has
sediment in a location where it will not cause impacts
occurred.
The outlet device
to streams or the SCM.
The outlet device is
Repair or replace the outlet device.
damaged.
Weeds or volunteer
Remove the weeds or trees.
trees are growing on
Floating wetland
island (if applicable)
damaged,
Restore the anchor cable to its design state.
disconnected or

Wet Pond Maintenance Requirements (Continued)
SCM element:
Potential problem:
How to remediate the problem:
Erosion or other signs
Repair the damage and improve the flow dissipation
of damage have
structure.
occurred at the outlet.
The receiving water
Discharges from the
wet pond are causing
erosion or
Contact the local NCDEQ Regional Office.
sedimentation in the
receivin water.

Wet Detention Pond Design Summary
Wet Pond Diaaram
WET POND ID
FOREBAY
MAIN POND
Wet Pond #
Permanent Pool El.M368.,E
Permanent Pool El.
368.5
Temporary Pool El:
Temporary Pool El:
370.63
Pretreatment othe No
Clean Out Depth
Clean Out Depth
368.,E
ATTACH ADDITIONAL SHEETS IF NECESSARY