HomeMy WebLinkAboutSW5210601_O&M Agreement/Plan_20210610tion & Maintenance Agreement
Project Name:
Project Location:
St Stephen Missionary Baptist Church
518 S Pine Street, Spring Hope, NC 237882
Cover Eme—
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 & co
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:
pondi g
O&M sheets will
Location(s):
Location(s):
Location(s):
1
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
1
Location(s):
Location(s):
Location(s):
Location(s):
No
Location(s):
No
Locatio-n(s):
I ype:
be added automatically):
Northwest corner of project area
Northwest corner of project area
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:
S
c�12
, - n Hope. C- 21E
';-25'a -4-7-5� -' '5-6CIF
i we r(IA- j) ht)-tfna; 1, 6on-7
, a Notary Public for the State of
Date:
County of do hereby certify that r I c�.
S-Q,,.3e I t - (Z Zs k-e
personally appeared before me this U day of Mo,!4 7—%D ILI
I
acknowledge the due execution of th 0 erations and Maintenance Agreement
Witness my hand and official seal, ct"L-
EANGELA M CLARK
NOTARY PUBLIC
NASHCOUNTN� NORTH CAROLINA
'OMMI SIO
MY COMMISSION rXPIRESL���-
and
Seal
My commission expires
STORM-EZ 5/19/2021
Version 1.5 O&M Agreement Page 1 of 1
Wet Pond Maintenance Requiroments
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 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 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 1.5 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:
Trash/debris is present.
Area . s of bare soil and/or
How to remediate the problem:
Remove the trash/debris.
Regrade the soil if necessary to remove the gully, plant ground
The entire wet pond
The perimeter of the wet
pond
erosive gullies have
cover and water until it is established. Provide lime and a one -
formed.
time fertilizer application.
The inlet pipe is clogged
(if applicable).
Unclog the pipe. Dispose of the sediment off -site.
The inlet pipe is cracked
The inlet device
or otherwise damaged (if
Repair or replace the pipe.
applicable).
Erosion is occurring in the
Regrade the swale if necessary and provide erosion control
swale (if applicable).
devices such as reinforced turf matting or riprap to avoid future
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
Erosion has occurred.
Provide additional erosion protection such as 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
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
50% of the area.
The main treatment area
Consult a professional to remove and control the algal growth.
Cattails, phragmites or
other invasive plants
Remove the plants by wiping them with pesticide (do not
cover 50% of the basin
spray).
surface.
Best professional
practices show that
pruning is needed to
Prune according to best professional practices.
maintain optimal plant
health.
Plants are dead, diseased
Determine the source of the problem: soils, hydrology,
disease, etc. Remedy the problem and replace plants.
The vegetated shelf
or dying.
Provide a one-time fertilizer application to establish the ground
cover if a soil test indicates it is necessary.
Weeds are present.
Remove the weeds, preferably by hand. If pesticide is used,
wipe it on the plants rather than spraying.
Shrubs have started to
grow on the embankment.
Remove shrubs immediately.
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
on the embankment.
Consult a dam safety specialist to remove the tree.
The embankment
An annual inspection by
an appropriate
professional shows that
Make all needed repairs immediately.
the embankment needs
repair.
Clogging has occurred.
Clean out the outlet device and dispose of any sediment in a
location where it will not cause impacts to streams or the SCM.
The outlet device
The outlet device is
damaged.
Repair or replace the outlet device.
Floating wetland island
(if applicable)
Weeds or volunteer trees
are growing on the mat.
Remove the weeds or trees.
The anchor cable is
damaged, disconnected or
Restore the anchor cable to its design state.
missing.
Wet Pond Maintenance Requirements (Continued)
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.
Wet Detention Pond Design Summary
Wet Pond Dia-ararn
WET POND ID
Wet Pond j
Pretreatment other No
than forebay?
Has Veg. Filter.?
Q
FOREBAY
Permanent Pool El.
259
Temporary Pool El:
260.34
Clean Out Depth:
4
Sediment Removal E
255
Bottom Elevation:
256
MAIN FUND
Permanent Pool El.
259
Temporary Pool El:
260.34
Clean Out Depth:
6
Sediment Removal E
253
Bottom Elevation:
254
Level Spreader -Filter Strip Maintenance Requirements
Important operation and maintenance procedures:
Immediately after the filter strip is established, any newly planted vegetation will be watered twice
weekly if needed until the plants become established (commonly six weeks).
Stable groundcover will be maintained in the drainage area to reduce the sediment load to the level
spreader -filter strip.
Every two weeks during the growing season, the filter strip will be mowed. Turf grass should not be cut
shorter than 4-6 inches and may be allowed to grow as tall as 12 inches depending on aesthetic
requirements (NIPC, 1993).
Once a year, the soil will be aerated if necessary and the filter strip will be reseeded to maintain a dense
growth of vegetation.
Once a year, soil pH will be tested and lime will be added if necessary.
For the fist two years after the LS-FS 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). After two years of successful performance,
it will be inspected quarterly. 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 ILS-FS
Trash/debris is present.
Remove the trash/debris.
The flow splitter device is
Unclog the conveyance and dispose of any sediment off -site.
The flow splifter device
clogged.
The flow splitter device is
(if applicable)
Make any necessary repairs or replace if damage is too large for
damaged.
repair.
Remove the sediment and dispose of it off -site.
The swale is clogged with
sediment.
The blind swale
Mow vegetation. Regrade and vegetate if the swale has become
The swale is overgrown
with vegetation.
silted in.
The level lip is cracked,
settled, undercut, eroded or
Repair or replace the lip.
otherwise damaged.
There is erosion around the
Regrade the soil to create a berm t hat is higher than the level lip,
The level spreader
end of the level spreader
that show stormwater has
plant ground cover and water until it is established. Provide lime
bypassed it.
and a one-time fertilizer application.
Trees or shrubs have
begun to grow on the swale
Remove the shrubs or trees.
or just downslope of the
level lip.
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 -
formed.
time fertilizer application.
The bypass channel
Turf reinforcement is
Study the site to see if a larger bypass channel is needed
damaged or ripap is rolling
(enlarge if necessary). After this, reestablish the erosion control
downhill.
material.
Level Spreader -Vegetated Filter Strip Maintenance Requirements (continued)
Iscm element: I Potential problem: I How to remediate the problem:
The filter strip
The receiving water
Grass is too short or too
Maintain grass at a height of approximately three to six inches.
long.
Regrade the soil if necessary to remove the gully, plant ground
Areas of bare soil and/or
erosive gullies have
cover and water until it is established. Provide lime and a one -
formed.
time fertilizer application.
Sediment is building up on
Remove the sediment and restabilize the soil with vegetation if
the filter strip.
necessary. Provide lime and a one-time fertilizer application.
Grass is dead, diseased or
Determine the source of the problem: soils, hydrology, disease,
etc. Remedy the problem and replace plants. Provide a one-time
dying.
fertilizer application to establish the ground cover if necessary.
Determine the source of the problem: soils, hydrology, disease,
etc. Remedy the problem and replace plants. Provide a one-time
Plants are dead, diseased
fertilizer application to establish the ground cover if a soil test
or dying.
indicates it is necessary. If sod was used, check to see that it
was not grown on clay or impermeable soils. Replace sod if
necessary.
Nuisance vegetation is
Remove vegetation by hand if possible. If pesticide is used, do
choking out the grass.
not allow it to get into the receiving water.
Erosion or other signs of
damage have occurred at
Repair the damage and improve the flow dissipation structure.
the outlet.
Discharges from the LS-FS
are causing erosion or
Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.