SW1240603_O&M Agreement/Plan_20240830

Operation & Maintenance Agreement
Project Name: ATCT and TRACON Project
Project Location: Asheville Regional Airport, Fletcher, NC
Cover Page
Maintenance records shall be kept on the following BMP(s). This maintenance record shall be kept in a log in a known set
location. Any deficient BMP 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 BMP(s).
The BMP(s) on this project include (check all that apply& corresponding O&M tables will be added automatically):
Bioretention Cell Quantity: 1 Location(s): South side of parking lot
Dry Detention Basin Quantity: Location(s):
Grassed Swale Quantity: Location(s):
Green Roof Quantity: Location(s):
Infiltration Basin Quantity: Location(s):
Infiltration Trench Quantity: Location(s):
Level Spreader/VFS Quantity: Location(s):
Permeable Pavement Quantity: Location(s):
Proprietary System Quantity: Location(s):
Rainwater Harvesting Quantity: Location(s):
Sand Filter Quantity: Location(s):
Stormwater Wetland Quantity: Location(s):
Wet Detention Basin Quantity: Location(s):
Disconnected Impervious Area Present: No Location(s):
User Defined BMP Present: No Location(s):
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed
for each BMP above, and attached O&M tables. I agree to notify NCDENR of any problems with the system or prior to any
changes to the system or responsible party.
* Responsible Party: Lew Bleiweis
Title & Organization: Executive Director, Greater Asheville Regional Aiport Authority
Street address: 61 Terminal Drive, Suite 1
City, state, zip: Fletcher, NC 28732
Phone number(s): [phone]
Email: [e-mail]
Signature: Date:
I, , a Notary Public for the State of
County of , do hearby certify that
personally appeared before me this day of and
acknowledge the due execution of the Operations and Maintenance Agreement .
Witness my hand and official seal,
STOlW Z My commission expires 5/23/2024
Version 1.4 O&M Manual Page 1 of 3

Bioretention Maintenance Requirements
Important operation and maintenance procedures:
_ Immediately after the bioretention cell is established, the plants will be watered twice weekly if needed until the plants
become established (commonly six weeks).
- Snow, mulch or any other material will NEVER be piled on the surface of the bioretention cell.
- Wheeled or tracked equipment will NEVER be driven over the bioretention planting surface.
- Special care will be taken to prevent sediment from entering the bioretention cell.
- If standing water is present 2 days after rainfall, conduct an infiltration test of the soil media.
After the bioretention cell is established, inspect it quarterly. Inspection activities shall be performed as follows and maintenance
activites shall commence immediately to remediate any problems observed per the table below.
BMP element: Potential problem: How to remediate the problem:
The entire BMP Trash/debris is present. Remove the trash/debris.
The perimeter of the BMP Areas of bare soil and/or Regrade the soil to remove the gully, and plant a ground cover and
erosive gullies have formed. water until it is established. Provide lime and a one-time fertilizer
application.
Vegetation is too short or too Maintain vegetation at a height of approximately six inches.
long.
The inlet device The pipe is clogged. Unclog the pipe. Dispose of the sediment off-site.
The pipe is cracked or Replace the pipe.
otherwise damaged.
Erosion is occurring in the Regrade the swale to smooth it over and provide erosion control
swale. devices such as reinforced turf matting or riprap to avoid future
problems.
Stone verge is clogged or Remove sediment and replace with clean stone.
covered in sediment (if
applicable).
The pretreatment area Flow is bypassing Regrade if necessary to route all flow to the pretreatment area.
pretreatment area and/or Restabilize the area after grading.
gullies have formed.
Sediment has accumulated to Search for the source of the sediment and remedy the problem if
a depth greater than three possible. Remove the sediment and restabilize the pretreatment area.
inches.
Erosion has occurred. Provide additional erosion protection such as reinforced turf matting or
riprap if needed to prevent future erosion problems.
_ Weeds are present. Remove the weeds, preferably by hand.
The bioretention cell: Best professional practices Prune according to best professional practices.
vegetation show that pruning is needed
to maintain optimal plant
health.
Plants are dead, diseased or Determine the source of the problem: soils, hydrology, disease, etc.
dying. Remedy the problem and replace plants. Provide a one-time fertilizer
application to establish the ground cover if a soil test indicates it is
necessary.
Tree stakes/wires are present Remove tree stake/wires (which can kill the tree if not removed).
six months after planting.
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Version 1.4 O&M Manual Page 2 of 3

Bioretention Maintenance Requirements (continued)
BMP element: 1Potential problem: How to remediate the problem:
The bioretention cell: Mulch is breaking down or Spot mulch if there are only random void areas. Replace whole mulch
soils and mulch has floated away. layer if necessary. Remove the remaining much and replace with
triple shredded hard wood mulch at a maximum depth of three inches.
Soils and/or mulch are Determine the extent of the clogging - remove and replace either just
clogged with sediment. the top layers or the entire media as needed. Dispose of the spoil in
an appropriate off-site location. Use triple shredded hard wood mulch
at a maximum depth of three inches. Search for the source of the
sediment and remedy the problem if possible.
An annual soil test shows that Dolomitic lime shall be applied as recommended per the soil test and
pH has dropped or heavy toxic soils shall be removed, disposed of properly and replaced with
metals have accumulated in new planting media.
the soil media.
The underdrain system Clogging has occurred. Wash out the underdrain system.
(if applicable)
The drop inlet Clogging has occurred. Clean out the drop inlet. Dispose of the sediment off-site.
The drop inlet is damaged Repair or replace the drop inlet.
The receiving water Erosion or other signs of Contact the local NC Department of Environment and Natural
damage have occurred at the Resources Regional Office.
outlet.
STORM-EZ 5/23/2024
Version 1.4 O&M Manual Page 3 of 3