SW6210302_O&M Agreement_20210323

Operation & Maintenance Agreement
Project Name:
Project Location:
Utility Improvements to Serve Maxwell Ridge
Calloway Road, Hoke County
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 & co
Infiltration Basin
Quantify:
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
1 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):
No Type:
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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:
Title & Organization:
Street address:
City, state, zip:
Phone number(s):
Sign
Huff Rokoski Development, LLC
Ralph Huff -Managing Partner
2919 Breezewood Avenue
Fayetteville, NC 28303
910-302-3608
Date:3 Jf '?
' 1J C 17r
of
County of Ct lar-N nl do hereby certify that ali, pK ,U
personally appeared before me this �i day of mQrch d0 al and
acknowledge the due execution of the O ions and Maintenance Agreement.
Witness my hand and official seal,
tAOTA& =�
COMMISSION EXPIRES
C7 7/4/2023
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Sea! n u, ,ti+ �%04
My commission expires 7 a 3
STORM-PZ 3/17/2021
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 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:
Now 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
applicable),
it 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
Erosion is occurring in the
Regrade the swale if necessary and provide erosion control
swale (if applicable).
devices such as reinforced turf matting or riprap to avoid future
erosion problems.
Stone verge is clogged or
Remove sediment and clogged stone and replace with clean
covered in sediment (if
stone.
applicable).
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.
The basin
Erosion of the basin
surface has occurred or
Provide additional erosion protection such as reinforced turf
riprap is displaced.
matting or riprap if needed to prevent future erosion problems.
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
storm event.
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.
An annual inspection by an
The embankment
appropriate professional
Make needed repairs immediately.
shows that the
embankment needs repair.
Clogging has occurred.
gg g
Clean out the outlet device and dispose of sediment in a location
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 erosion or
Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.