SWA000195_O&M Agreement/Plan_20230323

Operation & Maintenance Agreement
Project Name: I Legacy at Mills River - Ph. 1
Project Location: 1582 Jeffress Rd, Mills River, NC 28759
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
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):
Location(s):
Location(s):
Type:
4
No
No
Yes
be added automaticall
South of central apartments/duplexes
Ve etated swales/roadside ditches
CLICK TO UPDATE 08M MANUAL
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:
Title &Organization:
Street address:
City, state, zip:
Phone numberX):
Signature:
County of
personally appeared before me this
acknowledge the due execution of the
official seal,
O� NpTA R y �
MY
COMMIS ON PIKES
'��G2n BLOC'
Seal
Rick Grant
Manager, Blue Ridge Retirement Partners, LLC
70 Peachtree Rd, Suite 210
Asheville, NC 28803
828-2744084
rgrant@ verly-gr t.com
a Notary Public for the State of
do hereby certify that
and Maintenance Agreement .
My commission expires ��,
STORM-EZ 10/10/2022
Version 1.5 O&M Agreement Page 1 of 1

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.
- Heavy equipment will NEVER be driven over the bioretention cell.
- Special care will be taken to prevent sediment from entering the bioretention cell.
- Once a year, a soil test of the soil media will be conducted.
Remove top layer of fill media when the pool does not drain quickly. Based on the media specification,
the pool should drain within 24 hours.
After the bioretention cell 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:
How to remediate the problem:
The entire bioretention
Trash/debris is present.
Remove the trash/debris.
cell
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to remove the gully, plant ground
bioretention cell
erosive gullies have
cover and water until it is established. Provide lime and a one -
formed.
time fertilizer application.
The structure is clogged.
Unclog the structure and dispose of any sediment off -site.
The flow diversion
The structure is damaged.
Make any necessary repairs or replace if the damage is too much
structure (if applicable)
for 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).
Flow is bypassing
pretreatment area and/or
Regrade if necessary to route all flow to the pretreatment area.
gullies have formed.
Restabilize the area after grading.
Sediment has accumulated
Search for the source of the sediment and remedy the problem if
to a depth greater than
possible. Remove the sediment and dispose of it in a location
The pretreatment area
three inches.
where it will not cause impacts to streams or the SCM.
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. If pesticide is used, wipe
Pt on the plants rather than spraying.

Bioretention Maintenance Requirements (continued)
SCM element:
Potential problem:
How to remediate the problem:
Best professional practices
show that pruning is
Prune according to best professional practices. Maintain lines of
needed to maintain optimal
sight between Z-6'.
plant health.
Determine the source of the problem: soils, hydrology, disease,
etc. Remedy the problem and replace plants. Provide a one-
Bioretention cell
Plants are dead, diseased
time fertilizer application to establish the ground cover if a soil
vegetation
or dying.
test indicates it is necessary. If sod was used, check to see that
it was not grown on clay or impermeable soils. Replace sod if
necessary.
Weeds are present.
Remove the weeds, preferably by hand. If pesticide is used, wipe
it on the plants rather than spraying.
Tree stakes/wires are
present six months after
Remove tree stake/wires (which can kill the tree if not removed).
planting.
Spot mulch if there are only random void areas. Replace whole
Mulch is breaking down or
mulch layer if necessary. Remove the remaining mulch and
has floated away.
replace with triple shredded hard wood mulch at a maximum
depth of four inches.
Determine the extent of the clogging - remove and replace either
Soils and/or mulch are
just the top layers or the entire media as needed. Dispose of the
Bioretention cell mulch
cloed with sediment
gg.
spoil in an appropriate off -site location. Use triple shredded hard
and media
wood mulch at a maximum depth of four inches. Search for the
source of the sediment and remedy the problem if possible.
An annual soil test shows
that pH has dropped or
Dolomitic lime shall be applied as recommended per the soil test
heavy metals have
and toxic soils shall be removed, disposed of properly and
accumulated in the soil
replaced with new planting media.
media.
Clogging has occurred.
Wash out the underdrain system.
The underdrain, filter
Clean out the drop inlet. Dispose of the sediment in a location
fabric element, and outlet
Clogging has occurred.
where it will not cause impacts to streams or the SCM..
system
The drop inlet is damaged
Repair or replace the drop inlet.
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
bioretention cell are
causing erosion or
Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.

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

Clogging has occurred.
Clean out the outlet device. Dispose of the sediment off -site.
The outlet device (if
applicable)
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.
Discharges from the site
The receiving water
are causing erosion or
sedimentation in the
Contact the local NCDEQ Regional Office.
receiving water.