SW6230603_O&M Agreement/Plan_20230721

Operation & Maintenance Agreement
Project Name: Aberdeen US 15-501 Dollar General
Project Location: Hoke 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&corressanding O&M sheets will be added automaticall :
Infiltration Basin Quantity: I Location(s): southeast corner
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: 1 Location(s): southern side of .ro•ert
Dry Pond Quantity:_ Location(s):
Disconnected Impervious Surface Present: No Location(s):
User Defined SCM Present: No Location(s):
Low Density Present: No Type:
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: Jamie S Encinosa
Title & Organization: EVP of Operations -Rhetson Companies, Inc
Street address: 2075 Juniper Lake Road
City, state, zip: West End, NC 28376
Phone number(s): 910-944-0881
Email: [e-mail]
Signature: (elam Date: l
1, c o` - ON-£'SC.cTh , a Notary Public for the State of N prAkn Cox E t nn,
County of 1-� �,r rn��t" , do hereby certify that AVU��� S , E-fr n oSet,,
personally appeared before me this 5" day of c_ and
acknowledge the due execution of the Operations and Mai ance A reement . J
Witness my hand and official seal,
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Seal My commission expires t \ I 0 I- a oa—4—
STOR M-EZ 1/5/2023
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 b
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
ection 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
basin present. Remove the trash/debris.
Areas of bare soil Regrade the soil if necessary to remove the gully,
and/or erosive gullies plant ground cover and water until it is established.
The grass filter strip have formed. Provide lime and a one-time fertilizer application.
or other pretreatment Sediment has Search for the source of the sediment and remedy the
area accumulated to a problem if possible. Remove the sediment and
depth of greater than dispose of it in a location where it will not cause
three inches. impacts to streams or the SCM.
Unclog the conveyance and dispose of any sediment
The structure is in a location where it will not cause impacts to
The flow diversion clogged. p
structure (if streams or the SCM.
applicable) The structure is Make any necessary repairs or replace if damage is
damaged. too much for repair.
The inlet pipe is Unclog the pipe and dispose of any sediment in a
clogged (if location where it will not cause impacts to streams or
The inlet pipe is
cracked or otherwise Repair or replace the pipe.
damaged(if applicable)
The inlet device Erosion is occurring in Regrade the swale if necessary and provide erosion
the swale (if control devices such as reinforced turf matting or
applicable). riprap to avoid future erosion problems.
Stone verge is Remove sediment and clogged stone and replace
clogged or covered in with clean stone.
sediment(if applicable)
More than four inches
Search for the source of the sediment and remedy the
of sediment has problem if possible. Remove the sediment and
accumulated.
dispose of it in a location where it will not cause
impacts to streams or the SCM.
Erosion of the basin Provide additional erosion protection such as
The basin surface has occurred reinforced turf matting or riprap if needed to prevent
or riprap is displaced. future erosion problems.
Water is standing Replace the top few inches of soil to see if this
more than three days corrects the standing water problem. If not, consult an
after a storm event. appropriate professional for a more extensive repair.

Infiltration Basin Maintenance Requirements;(continued).
SCM element: Potential problem: How to remediate the problem:
Shrubs or trees are
growing on the Remove shrubs and trees immediately.
embankment.
The embankment An annual inspection
by an appropriate
professional shows Make needed repairs immediately.
that the embankment
needs repair.
Clogging has Clean out the outlet device and dispose of sediment
in a location where it will not cause impacts to
occurred.
The outlet device streams or the SCM.
The outlet device is Repair or replace the outlet device.
damaged
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
infiltration basin are
causing erosion or Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.

Treatment Swale Maintenance Requirements
Important operation and maintenance procedures:
The drainage area of the grassed swale will be carefully managed to reduce the
sediment load to the grassed swale.
After the initial fertilization to establish the grass in the swale, fertilizer will not be
applied to the treatment swale.
The grassed swale will be inspected quarterly. Records of operation and maintenance shall be kept
in a known set location and shall be available upon request.
.ection activities shall be performed as follows.Any problems that are found shall be repaired immediately.
SCM element: Potential problem: How to remediate the problem:
Trash/debris is present Remove the trash/debris.
Regrade the soil if necessary to remove the gully, re-
Areas of bare soil sod (or plant with other appropriate species)and water
and/or erosive gullies until established. Provide lime and a one-time
have formed. fertilizer application.
Sediment covers the
grass at the bottom of Remove sediment and dispose in an area that will not
the swale.
impact streams or SCMs. Re-sod if necessary.
The entire length of Vegetation is too short Maintain grassed vegetation such that the swale or
the swale vegetated area does not erode during the peak flow
or too long.
from the 10-year storm
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.
Remove the trees and woody vegetation from the
Trees and/or other woody
vegetation are present in treatment swale, regrade the treatment swale if necessary
the treatment swale and re-establish grass as shown on the approved plans
Clogging has Clean out the outlet device. Dispose of the sediment
occurred. of 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
treatment swale are
causing erosion or Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.