SWA000083_O&M Agreement_Low Impact_Signed_20201208

Operation & Maintenance Agreement
Project Name: Ferncliff Retail - New Substation
Project Location: 95 Wonder Way Mills River, NC 28759
Cover Page
vlaintenance records shall be kept on the following SCM(s). This maintenance record shall be kept in a log in a known set location.
Nny 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 & coi
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:
onding O&M sheets will
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
No Location(s):
No Location(s):
Yes Type:
ide ditches
acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for
:ach SCM above, and attached O&M tables. I agree to notify NCDEQ of any problems with the system or prior to any changes to
he system or responsible party.
Responsible Party:
Title & Organization:
Street address:
City, state, zip:
Phone number(s):
Email:
Duke Energy Carolinas, LLC Michael D. Robinson)
Manager - Substation Engineering
526 S. Church Street, EC08Q
Charlotte, NC 28202
980-373-4228
Mike.Robinson duke-energy.com
Signature: li4npol �-+-� _ Date: J1 /IS JD),O
L A I Q5 .- a Notary Public for the State of tv 0r+k Cqv d I +� Ck
3ounty of I 2G ev\�mk a , do hereby certify that j cko q P"0b, n50 V.,)ersonally appeared before me this }� day of N 0 \j k „ ,P r and
acknowledge the due execution of the Operations and Maintenance Agreement.
Nitness my hand and official seal, C
"N - times
t f . ,L�, .
My commission expires
My Commission Expires 7-26-2W
TORM-EZ 11 /11 /2C

Low uensity maintenance Kequirements
mportant 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
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
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.
)ction activities shall be performed as follows. Any problems that are found shall be repaired immediately.
5CM element:
Potential problem:
How to remediate the problem:
Vegetation is too short
Maintain grassed vegetation such that the swale or
Vegetation
vegetated area does not erode during the peak flow
or too long.
from the 10-year storm
Remove the trash/debris.
Areas of bare soil
egra e e soili necessary o remove a gully, an
and erosive gullies
then re -sod (or plant with other appropriate species)
Vegetated receiving
. have formed
and water until established. Provide lime and a one -
areas
time fertilizer application.
Trees and/or other
Remove the trees and woody vegetation from the
woody vegetation are
swale, regrade the swale if necessary and re-establish
present in the swale.
grass as shown on the approved plans.
Trash/debris is
Remove the trash/debris.
present.
Areas of bare soil
egra e the soil it necessary to remove the gully, an
and/or erosive gullies
then re -sod (or plant with other appropriate species)
have formed.
and water until established. Provide lime and a one-
time fertilizer a lication.
Sediment covers the
grass at the bottom of
Remove sediment and dispose in an area that will not
Vegetated
impact streams or SCMs. Re -sod if necessary.
conveyances/
the swale.
The side slope is
Regrade the slopes to the permitted configuration per
swales / roadside
ditches (other than
steeper than the
the approved plan and reestablish vegetation. If as -
curb outlet swales)
approved
built or existing conditions do not allow the slopes to
configuration.
be regraded, contact the applicable permitting
Determine the source of the problem: soils,
Grass is dead,
hydrology, disease, etc. Remedy the problem and
diseased or dying.
replace plants. Provide a one-time fertilizer
application to establish the ground cover if necessary.
Trees and/or other
Remove the trees and woody vegetation rom e
woody vegetation are
vegetated conveyance, regrade the vegetated
present in the
conveyance if necessary and re-establish grass as
ve etated
Ishown on the approved plans.

Clogging has
Clean out the outlet device. Dispose of the sediment
occurred.
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
Repair the damage and improve the flow dissipation
occurred at the outlet.
structure.
The receiving water
Discharges from the
site are causing
erosion or
Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.