SW1210503_O&M_20221102

Operation & Maintenance Agreement
Project Name: Hot Springs Microgrid
Project Location:I Hot Springs, NC (Lat: 35.89 Lon:-82.83)
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&corres onding 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:I Yes Location(s):
Low Density Present: Yes Type: Dls ersed flow only
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
Title&Organization: Director of Customer Delivery Project Management
Street address: 526 S Church St
City,state,zip: Charlotte,NC 28202
Phone number(s): 727-820-4569
Email: [e-mail]
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Signature: Date: 1 Z ! Z7I r r ,� �CL r a Notary Public for the State of A '
County of 6�,A r-- 40 do hereby certify that ;j—c[�, 1
personally appeared before me this r day of �?��,� „20,2 3A and
acknowledge the due execution of the Operations and Map.t$nance Agreement.
A
Witness my hand and official seal, r,
E
p��, SARA ACHELDER
��_Notary Pu lic-State of Florida
Commiss on#HH 313873
ftg. My Com ission Expires
Septe ber 20,2026
Sea/ My commission expires la 06..CP
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User Defined SCM Maintenance Re ulrements
Section 1
Important operation and maintenance procedures:
-ff-O
RECOMMENDATION 1:AVOID COMPACTION OF SUBSOIL
w RECOMMENDATION 3:AVOID CONCENTRATION OF STORMWATER RECOI+�MENDATION 4:MINIMIZE USE OF HERBICIDES AN5 FERTILIZERS- haft be in meadow conditions to alleviate sedirrrent load isavin the site.
The system will be inspected at least quarterly.Records of operation and maintenance will be kept in a known set
location and will be available upon request.
Section 2
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately.
SCM element: Potentialproblem: How to remedlate the ro to :_
V eta4ive Cover Bare soil t Erosion Replant as necessary and/or grade to reduce erosion,
Ve etative Cover Vegetation Vegetation shall be maintain at approximately i G-12 inches
Receiyio water hod Sediment loading Contact NC Division of Water Quality
l.ow Den i 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 vegetat:conVeyan�ce or veetated receiving areawllibe inspectedquarterly. Recds of operation artdmaintenanc 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 is too short or Maintain grassed vegetation such that the Swale or vegetated
Vegetation too long, area does not erode during the peak flow from the 16-year
storm
Trash/debris is present. Remove the trash/debris,
Vegetated receiving Areas of bare soil and/"or Regrade the soil if necessary to remove the gully,and then re-
areas erosive gullies have sod(or plant with other appropriate species)and water until
formed. established. Provide lime and a one-time fertilizer application.
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