SW3240502_O&M Agreement/Plan_20240606

Operation & Maintenance Agreement
Project Name: Sage at Marvin
Project Location: 9820 Joe Kerr Rd, Waxhaw, NC 28173
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: 2 Location(s): Parcels 06237011 and 06237026
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: 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: 5 f f NOc1t J (A4t, Nj t(/
Title&Organization: t/ifM�C-f1 P t 1- - E f ril G> /a r M J (Al (VC RC) LC
Street address: yc/ cc i-MC r Iz-P
City, state, zip: JtatrUO fr N C 4?ZG
Phone number(s): 7C)H gen 56 5S
Email: A-iv'OOnl 6XP(Nc-,fir(** -6-6;)v( ry ,CTIAA
Signature: Date: y//5/ C L
I, ZTPri �mm , a Notary Public for the State of )J, C_.
County of V MO/4 , do hereby certify that i3*A WDIO N M Mc W el-L-..
personally appeared before me this /C day of /I2IL__ 202, and
acknowledge the due execution of the Op a ns and Maintenance Agreement
Witness my hand and official seal,
•
G o�
NOTARY
PUBLIC
1.'•;2/OA,!soh 16,2-0,
Seal My commission expires 4(hgvq /6 L'iQ
STORM-EZ 4/12/2024
Version 1.5 O&M Agreement Page 1 of 1

Infiltration Basin Maintenance Requirements
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.
The structure is clogged. Unclog the conveyance and dispose of any sediment in a location
The flow diversion 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 it
applicable). will not cause impacts to streams or the SCM.
The inlet pipe is cracked or
otherwise damaged (if Repair or replace the pipe.
applicable).
The inlet device 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).
erosion problems.
Stone verge is clogged or Remove sediment and clogged stone and replace with clean
covered in sediment (if
applicable). stone.
More than four inches of Search for the source of the sediment and remedy the problem if
sediment has accumulated. possible. Remove the sediment and dispose of it in a location
where it will not cause impacts to streams or the SCM.
Erosion of the basin surface
The basin Provide additional erosion protection such as reinforced turf
has occurred or riprap is matting or riprap if needed to prevent future erosion problems.
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 professional
storm event. for a more extensive repair.
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Infiltration Basin Maintenance Requirements (continued)
SCM element: Potential problem: How to remediate the problem:
Shrubs or trees are growing Remove shrubs and trees immediately.
on the embankment.
The embankment An annual inspection by an
appropriate professional
shows that the Make needed repairs immediately.
embankment needs repair.
Clogging has occurred. Clean out the outlet device and dispose of sediment in a location
gg g 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 Contact the local NCDEQ Regional Office.
erosion or sedimentation in
the receiving water.
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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 vegetated receiving area.
_ 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 areas.
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.
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:
Vegetation Vegetation is too short or Maintain grassed vegetation such that the swale or vegetated
too long. area does not erode during the peak flow from the 10-year storm
Trash/debris is present. Remove the trash/debris.
Areas of bare soil and/or Regrade the soil if necessary to remove the gully, and then re-sod
erosive gullies have (or plant with other appropriate species) and water until
Vegetated receiving areas formed. established. Provide lime and a one-time fertilizer application.
Trees and/or other woody Remove the trees and woody vegetation from the swale, regrade
vegetation are present in the swale if necessary and re-establish grass as shown on the
the swale. approved plans.
Trash/debris is present. Remove the trash/debris.
Areas of bare soil and/or Regrade the soil if necessary to remove the gully, and then re-sod
erosive gullies have (or plant with other appropriate species) and water until
formed. established. Provide lime and a one-time fertilizer application.
Sediment covers the grass Remove sediment and dispose in an area that will not impact
Vegetated conveyances / at the bottom of the swale. streams or SCMs. Re-sod if necessary.
swales / roadside ditches Regrade the slopes to the permitted configuration per the
(other than curb outlet The side slope is steeper approved plan and reestablish vegetation. If as-built or existing
swales) than the approved conditions do not allow the slopes to be regraded, contact the
configuration. applicable permitting agency.
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.
Trees and/or other woody Remove the trees and woody vegetation from the vegetated
vegetation are present in conveyance, regrade the vegetated conveyance if necessary and
the vegetated conveyance. re-establish grass as shown on the approved plans.
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Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site.
The outlet device (if
applicable)
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 site
are causing erosion or Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.
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