SW1230801_O&M Agreement/Plan_20230920

Operation & Maintenance Agreement
Project Name: Ferncliff Retail - New Substation
Project Location: 684 Broadpointe Dr. Mills River, NC 28759
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: 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: Duke Energy Carolinas, LLC (Darrin Cardwell)
Title & Organization: Manager- Substation Engineering
Street address: , 526 S. Church Street, ECO8Q
City, state, zip. Charlotte, NC 28202
Phone number(s): 704 382-4021
Email [e-mail]
Signature: Date:
1 f3,1/ �3
I. BRANDON LE S , a Notary Public for the State of NOaT N CRROLUNR
County of MC-c Ngl]cc , do hereby certify that DRRfirN CaRowcLi
personally appeared before me this 23 rri day of pc t3Ru F)RY 2Q2 and
acknowledge the due execution of the Operations and Maintenance Agreement
Witness my hand and official seal, AlmaAAIiNDov LEWIS
- -
r -ORANDON lkwis _
1 Nptary PyDIUc•-,tiorth.Carolina '• _
-MTckWyg County
,My,Copynisyfpry; p ryes Jun•11,2024'
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Seal My commission expires .fVNE tl, 2024
STORM-EZ 2/2112023
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
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 inspecttdarterly. Records of operation and maintenance will be kep
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 is too short or too Maintain grassed vegetation such that the swale or vegetated area doE s
Vegetation
long. not erode during the peak flow from the 10-year storm
Trash/debris is present. Remove the trash/debris.
Regrade the soil if necessary to remove the gully,and then re-sod(or
Areas of bare soil and/or
erosive gullies have formed. plant with other appropriate species)and water until established. Prov
Vegetated receiving areas lime and a one-time fertilizer application.
Trees and/or other woody Remove the trees and woody vegetation from the swale,regrade the
vegetation are present in the swale if necessary and re-establish grass as shown on the approved
swale. plans.
Trash/debris is present. Remove the trash/debris.
Regrade the soil if necessary to remove the gully,and then re-sod(or
Areas of bare soil and/or
plant with other appropriate species)and water until established. Prov
erosive gullies have formed.
lime and a one-time fertilizer application.
Sediment covers the grass at Remove sediment and dispose in an area that will not impact streams or
the bottom of the swale. SCMs. Re-sod if necessary.
Vegetated conveyances/
swales/roadside ditches
(other than curb outlet The side slope is steeper thar Regrade the slopes to the permitted configuration per the approved plan
swales) the approved configuration. and reestablish vegetation.If as-built or existing conditions do not allow
the slopes to be regraded,contact the applicable permitting agency.
Determine the source of the problem: soils,hydrology,disease,etc.
Grass is dead,diseased or
Remedy the problem and replace plants. Provide a one-time fertilizer
dying.
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 the conveyance,regrade the vegetated conveyance if necessary and re-
vegetated conveyance. establish grass as shown on the approved plans.
Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site.
The outlet device(if
applicable)
The outlet device is damaged Repair or replace the outlet device.
Erosion or other signs of
damage have occurred at the Repair the damage and improve the flow dissipation structure.
outlet.
The receiving water Discharges from the site are
causing erosion or
Contact the local NCDEQ Regional Office.
sedimentation in the receiving
water.