SW6210303_O&M Agreement_20210329

Project Name:
Project Location:
Watson Ridge Subdivision, Phase 1 and Phase 2
Sheriff Watson Road, Harnett County
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 SCIVI(s)�
The SCM(s) on this project include (check all that apply & co res
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:
O&M sheets will be added automatically):
Location(s): #1 by Lots 55-56 1 #2 by Lots 32-34
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Locatiorl
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s)�
Location(s):
Location(s):
Type:F--
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:
Sheriff Watson, LLC
Ralph Huff -Managing Partner
2919 Breezewood Avenue, Suite 100
Fayetteville, NG 28303
910-302-3608
[e-mail]
, a Notary Public for the State of
Date: Matcv% S. 40-�
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County of
do hereby certify that
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personally appeared before me this
day of M Ul lIllN
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and
acknowledge the due execution of the 0 rations and Maintenance Agreement
Witness my hand and official seal,
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STORM-EZ 31312021
Version 1.5 O&M Agreement Page 1 of I

NF22,
Important operation and maintenance procedures:
- The drainage area will be carefully managed to reduce the sediment load to the infiltration basin.
No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish
- the vegetation. Lime may be allowed if vegetation is planted on the surface of the infiltration basin and a
soil test shows that it is needed.
- The vegetation in and around the basin will be maintained at a height of four to six inches.
After the infiltration basin 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 infiltration
Trash/debris is present.
Remove the trash/debris.
basin
Areas of bare soil and/or
Regrade the soil if necessary to remove the gully, plant ground
erosive gullies have
cover and water until it is established. Provide lime and a one -
The grass filter strip or
formed.
time fertilizer application.
other pretreatment area
Sediment has accumulated
Search for the source of the sediment and remedy the problem if
to a depth of greater than
possible. Remove the sediment and dispose of it in a location
three inches.
where it will not cause impacts to streams or the SCM.
Unclog the conveyance and dispose of any sediment in a location
The flow diversion
The structure is clogged.
where it will not cause impacts to streams or the SCM.
structure (if applicable)
Make any necessary repairs or replace if damage is too much for
The structure is damaged.
repair.
The 'inlet pipe is clogged (if
Unclog the pipe and dispose of any sediment in a location where
applicable).
it will not cause impacts to streams or the SCM.
The inlet pipe is cracked or
otherwise damaged (if
Repair or replace the pipe.
applicable).
Regrade the swale if necessary and provide erosion control
The inlet device
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 (i
stone.
applicable).
Search for the source of the sediment and remedy the problem if
More than four inches of
possible. Remove the sediment and dispose of it in a location
sediment has accumulated.
where it will not cause impacts to streams or the SCM.
The basin
Erosion of the basin
Provide additional erosion protection such as reinforced turf
surface has occurred or
matting or riprap if needed to prevent future erosion problems.
riprap is displaced.
Water is standing more
Replace the top few inches of soil to see if this corrects the
than three days after a
standing water problem. If not, consult an appropriate
storm event.
professional for a more extensive repair.

W
M-123 �M=,Z'
How to remediate the problem:
SCM element,
Potential problem:
Shrubs or trees are
growing on the
Remove shrubs and trees immediately.
embankment.
An annual inspection by an
The embankment
appropriate professional
Make needed repairs immediately.
shows that the
embankment needs repair.
Clean out the outlet device and dispose of sediment in a location
Clogging has occurred.
where it will not cause impacts to streams or the SCM.
The outlet device
The outlet device is
Repair or replace the outlet device.
damaged
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
infiltration basin are
causing erosion or
Contact the local NCDEQ Regional Office.
sedimentation in the
,receiving water.

LO,I,Ma$
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 darn 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 1.6 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.
Areas of bare soil and/or
Regrade the soil if necessary to remove the gully, plant ground
The perimeter of the wet
erosive gullies have
cover and water until it is established. Provide lime and a one -
pond
formed.
time fertilizer application.
The inlet pipe is clogged
Unclog the pipe. Dispose of the sediment off -site.
(if applicable).
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
Provide additional erosion protection such as reinforced turf
Erosion has occurred.
matting or riprap if needed to prevent future erosion problems.
Remove the weeds, preferably by hand, If pesticide is used,
Weeds are present.
wipe it on the plants rather than spraying.

SCIVI 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.
Algal growth covers over
Consult a professional to remove and control the algal growth.
The main treatment area
50% of the area.
Cattails, phragmites or
Remove the plants by wiping them with pesticide (do not
other invasive plants cover
spray).
50% of the 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, hydrology,
The vegetated shelf
Plants are dead, diseased
disease, etc. Remedy the problern and replace plants. Provide
or dying.
a one-time fertilizer application to establish the ground cover if
a soil test indicates it is necessary.
Remove the weeds, preferably by hand. lf pesticide is used,
Weeds are present.
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.
A tree has started to grow
Consult a dam safety specialist to remove the tree.
The embankment
on the embankment.
An annual inspection by
an appropriate
professional shows that
Make all needed repairs immediately.
the embankment needs
repair.
Clean out the outlet device and dispose of any sediment in a
Clogging has occurred.
location where it will not cause impacts to streams or the SCM.
The outlet device
The outlet device is
Repair or replace the outlet device.
damaged.
Weeds or volunteer trees
Remove the weeds or trees.
are growing on the mat.
Floating wetland island
The anchor cable is
(if applicable)
damaged, disconnected or
Restore the anchor cable to its design state.
missing.

TE
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.
Discharges from the wet
The receiving water
pond are causing erosion
Contact the local NCDEQ Regional Office.
or sedimentation in the
receiving water.

Pretreatment other
than forebay?
Has Veg. Filter?
Permanent Pool El.
329
Temporary Pool El:
330.1
Clean Out Depth:
2
Sediment Removal E
327
Bottom Elevation:
326
ATTACH ALMITIUNAL 5MLIS IF NL(;LbbAKY
Permanent Pool El.
329
Temporary Pool El:
330.1
Clean Out Depth:
4
Sediment Removal E
325
Bottom Elevation:
324