SW3240802_O&M Agreement/Plan_20241108

Operation & Maintenance Agreement
Project Name: Luna Estates Subdivision
Project Location: Town of Weddington, Union County, 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: 1 Location(s): See attached plans
Infiltration Trench Quantity: Location(s):
Bioretention Cell Quantity: Location(s):
Wet Pond Quantity: Location(s):
Stormwater Wetland Quantity: Location(s):
'ermeable 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: No Type:
Icknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for
ich SCM above, and attached O&M tables. I agree to notify NCDEQ of any problems with the system or prior to any changes to
e system or responsible party.
Responsible Party: TOLL SOUTHEAST LP COMPANY INC/ Ryan Switzer
Title& Organization: Division President , Charlotte
Street address: 9130 Kings Parade Blvd
City, state, zip: Charlotte, NC 28273
Phone number(s): [phone]
Email: [e-mail]
Signature: 417 Date: 6/4/24'
KAL'N LAPP P r V EWE , a Notary Public for the State of NOQ.TN CA'PoUPIA
aunty of DAV IDSJhI , do hereby certify that Q.jjN SW iTzE(Z.
;rsonally appeared before me this lkm day of J UNE and
:knowledge the due execution of the Operations an Maintenance Agreement .
'itness my hand and official seal, y) ��th .
LMy
KALYN LAPP PRIVETTE
Notary Public, North Carolina
Davidson County
Commission Expires
May 26,2025
ORM-EZ My commission expires ` 5-a5-a15 6/11/2(

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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