SW6211101_O&M Agreement/Plan_20211130

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Operation & Maintenance Agreement
Project Name: MASON RIDGE SUBDIVISION
Project Location: NURSERY ROAD, HARNETT COUNTY
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:
O&M sheets wil
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):
Type:
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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.
Signature:
Responsible Party:
Title & Organization:
Street address:
City, state, zip:
Phone number(s):
Email:
Elvis
PO Box 1310
Broadway, NC 27505
[phone]
eivisfairclothO-Yahoo.com
Date: I
7 \/ / - / / - �
/��� cl c f r(-,4J , a Notary Public for the State of % V��Ci IL Octi co i ,1CL,
County of %. 6 do hereby certify that al b'/ !�' /'�i re k/1'
personally appeared before me this day of �L ✓e k" b e r U cP- and
acknowledge the due execution of the rati a Maintenance ement .
Witness my hand and official seal,
Seal
My commission expires d�
STORM-EZ 11 /10/2021
Version 1.5 O&M Agreement Page 1 of 1

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, fertilizerwill 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.
ection activitiesshall be performed asfollows. Any problemsthat are found shall be repaired immedial
SCM element:
Potential problem:
How to remediate the problem:
Maintain grassed vegetation such that the Swale or
Vegetation istoo short
Vegetation
vegetated area does not erode during the peakflow
or too long.
from the 10-year storm
Remove the trash/debris.
Areasof bare soil
egra e the soil it necessary to remove the gully, an
then re -sod (or plant with other appropriate species)
and/or erosive gullies
Vegetated receiving
have formed.
and water until established. Provide lime and a one -
areas
time fertilizer aipiplication.
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.
grassasshown on the approved plans.
Trash/debris is
Remove the trash/debris.
present.
Areas of bare soil
egra e the soil it necessary to remove the gully, an
then re -sod (or plant with other appropriate species)
and/or erosive gullies
and water until established. Provide lime and a one-
have formed.
time fertilizer aipiplication.
Sedim
Sediment covers the
Remove sediment and dispose in an area that will not
grass t the bottom of
Vegetated
impact streams or SCMs. Re -sod if necessary.
the swalth
e.
conveyances /
The side slope is
Regrade the slopesto the permitted configuration per
swales / roadside
ditches (other than
steeper than the
the approved plan and reestablish vegetation. If as -
curb outlet swales)
approved
built or existing conditionsdo not allow the slopesto
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.
rees 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
ve etated
shown on the amproved 1plans.

Clogging has
Clean out the outlet device. Dispose of the sediment
occu rred.
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
receivin a water.

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
problemsthat 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 activitiesshall be performed asfollows. Any problemsthat are found shall be repaired immedial
SCM element:
Potential problem:
How to remediate the problem:
The entire SCM
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 impactsto streamsor
The inlet pipe is
The inlet device
cracked or otherwise
Repair or replace the pipe.
damaged (if
Erosion isoccurring 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 problemswith 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
impactsto streamsorthe 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
impactsto streamsorthe SCM.
The main treatment
for sediment storage.
Water is standing
area
more than 5 days after
Checkthe outlet structure for clogging. If it is design
issue, consult an appropriate professional.
a storm event.
Weeds and noxious
Remove the weeds, preferably by hand. If pesticide is
plantsare growing in
used, wipe it on the plants rather than spraying.
the main treatment

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.
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. Dispose of the sediment
Clogginghas
in a location where it will not cause impacts to
The outlet dev ice
occurred.
streams or the SCM.
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
dry pond are causing
erosion or
Contact the local NCDEQ Regional Office.
sedimentation in the
Ireceiving water.

Dry Detention Pond Design Summary
DRY POND ID
1
Pretreatment No
Has Veg. Filter I No
DRY POND ID
2
Pretreatment
Has Veg. Filter
FOREBAY
Temporary Pool El:
Clean Out Depth: 0
Sediment Storage El:
Bottom Elevation:
FOREBAY
Temporary Pool El:
Clean Out Depth: 0
Sediment Storage El:
Bottom Elevation:
MAIN POND
Temporary Pool El: 308.42
Clean Out Depth: 308.42
Sediment Storage El:
Bottom Elevation: 305.5
MAIN POND
Temporary Pool El: 323.29
Clean Out Depth: 323.29
Sediment Storage El:
Bottom Elevation: 322