SW3240804_O&M Agreement/Plan_20240921

Operation & Maintenance Agreement
Project Name: Beckingham
Project Location: Weddington, 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: Location(s):
Wet Pond Quantity: Location(s):
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: 3 Location(s):
Disconnected Impervious Surface Present: No Location(s):
User Defined SCM Present: No Location(s):
Low Density Present: Yes Type: Vegetated swales/roadside ditches
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: Tom Waters
Title & Organization: President, Provident Land Services, Inc.
Street address: 6707 Fairview Road, Suite B
City, state, zip: Charlotte, NC 28210
Phone number(s): 704.201.5150
Email: [e-mail]
Signat / Date: 021/07
y
1, 1 - Le_y��,]-�y c , a Notary Public for the State of 600-0/V COUC6 1 kiL,
County of (-1 ( Y' , do hereby certify that V\ ate IS
personally appeared before me this .i day of 61.,)S\--- a6a LI and
acknowledge the due execution of the O erations and Mai er�ance Agree ent
�1
Witness my hand and official seal, 1 � 11 f .
KRISTIN LYNN DILLARD
Notary Public
State of South Carolina
My Commission Expires Jun 21, 2033
Seal My commission expires 0 UAK, a( ( p2b�-3
STORM-EZ 8/21/2024

Dry Pond Maintenance Requirements
Important operation and maintenance procedures:
- The drainage area will be managed to reduce the sediment load to the dry pond.
- Immediately after the dry pond is established, the vegetation will be watered twice
weekly if needed until the plants become established (commonly six weeks).
- After the initial fertilization to establish vegetation in the dry pond, fertilizer will not
be applied to the dry pond.
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- At least once annually, a dam safety expert will inspect the embankment.Any
problems that are found will be repaired immediately.
After the dry pond is established, it shall 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 SCM rdaiuveu,io lb 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.
SCM
have formed. Provide lime and a one-time fertilizer application.
The inlet pipe is Unclog the pipe. Dispose of the sediment in a
clogged (if location where it will not cause impacts to streams or
The inlet pipe is
The inlet device cracked or otherwise Repair or replace the pipe.
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.
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 main treatment for sediment storage.
Water is standing
area more than 5 days after Check the outlet structure for clogging. If it is a design
a storm event. issue, consult an appropriate professional.
Weeds and noxious
Remove the weeds, preferably by hand. If pesticide is
plants are growing in
the main treatment used, wipe it on the plants rather than spraying.

Dry Pond Maintenance Requirements(continued)
SCM element: Potential problem: How to remediate the problem:
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.
The embankment A tree has started to
grow on the Consult a dam safety specialist to remove the tree.
An annual inspection
by an appropriate
professional shows Make all needed repairs immediately.
that the embankment
needs repair.
Clo in has Clean out the outlet device. Dispose of the sediment
gg g in a location where it will not cause impacts to
occurred.
The outlet device streams or the SCM.
The outlet device is
Repair or replace the outlet device.
damaged
Erosion or other signs
of damage have Repair the damage and improve the flow dissipation
occurred at the outlet.
structure.
The receiving water Discharges from the
dry pond are causing
erosion or Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.

Dry Detention Pond Design Summary
DRY POND ID FOREBAY MAIN POND
BMP#1 Temporary Pool El: Temporary Pool El: 614.22
Clean Out Depth: 0 Clean Out Depth: 1.22
Pretreatmen No Sediment Storage E Sediment Storage E 613
Has Veg.Filter Yes Bottom Elevation: Bottom Elevation: 612
DRY POND ID FOREBAY MAIN POND
BMP#2 Temporary Pool El Temporary Pool El: 606.42
Clean Out Depth: 0 Clean Out Depth: 1.42
Pretreatmen Sediment Storage E Sediment Storage E 605
Has Veg.Filter Yes Bottom Elevation: Bottom Elevation: 604
DRY POND ID FOREBAY MAIN POND
13MP/K Temporary Pool El: Temporary Pool El 584.45
Clean Out Depth: 0 Clean Out Depth: 1.45
Pretreatmen Sediment Storage E Sediment Storage E 583
Has Veg.Filter Yes Bottom Elevation: Bottom Elevation: 582

Low Density Maintenance Requirements
Important maintenance procedures:
The drainage area to the vegetated conveyance or vegetated receiving area will be
carefully managed to reduce the sediment load to the vegetated conveyance or
After the initial fertilization to establish the grass in the vegetated conveyance or the
vegetated receiving area, fertilizer will not be applied to the vegetated receiving
The vegetated conveyance or vegetated receiving area will be inspected quarterly. Records of
operation and maintenance will be kept in a known set location and will be available upon request.
Iection activities shall be performed as follows. Any problems that are found shall be repaired immediately.
SCM element: Potential problem: How to remediate the problem:
Vegetation is too short Maintain grassed vegetation such that the swale or
Vegetation vegetated area does not erode during the peak flow
or too long.
from the 10-year storm
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Remove the trash/debris.
Areas of bare soil
Regrade the soil if necessary to remove the gully, and
and/or erosive gullies
then re-sod (or plant with other appropriate species)
Vegetated receiving and water until established. Provide lime and a one-
have formed.
areas time fertilizer application.
Trees and/or other Remove the trees and woody vegetation from the
woody vegetation are swale, regrade the swale if necessary and re-establish
present in the swale. grass as shown on the approved plans.
Trash/debris is
Remove the trash/debris.
present.
Areas of bare soil Regrade the soli if necessary to remove the gully, and
and/or erosive gullies then re-sod (or plant with other appropriate species)
have formed. and water until established. Provide lime and a one-
time fertilizer application.
Sediment covers the
grass at the bottom of Remove sediment and dispose in an area that will not
Vegetated impact streams or SCMs. Re-sod if necessary.
conveyances/ the swale.
swales/roadside The side slope is Regrade the slopes to the permitted configuration per
ditches(other than steeper than the the approved plan and reestablish vegetation. If as-
curb outlet swales) approved built or existing conditions do not allow the slopes to
configuration. be regraded, contact the applicable permitting
Determine the source of the problem: soils,
Grass is 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 necessary.
Trees and/or other Remove the trees and woody vegetation from the
woody vegetation are vegetated conveyance, regrade the vegetated
present in the conveyance if necessary and re-establish grass as
vegetated shown on the approved plans.

Clogging has Clean out the outlet device. Dispose of the sediment
occurred. off-site.
The outlet device(if
applicable)
The outlet device is
Repair or replace the outlet device.
damaged
Erosion or other signs
Repair the damage and improve the flow dissipation
of damage have
occurred at the outlet. structure.
The receiving water Discharges from the
site are causing
erosion or Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.