SW1190501_0M_AGREEMENT_7/12/2019

NORTH BUNCOMBE MIDDLE SCHOOL
51 N BUNCOMBE SCHOOL ROAD
Cover Page
Maintenance records shall b*kept onthe following ByNP(s). This maintenance record shall be kept in a log in a known set
location. Any deficient BN1P elements noted in the inspection will be conechad, 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 & c(
BkznatendonCeU
Quantity:
Dry Detention Basin
Quantity:
Grassed Swale
Quantity:
Green Roof
Quantity:
Infiltration Basin
Quantity:
Infiltration Trench
Quantity:
Level SpvamderNFS
Quantity:
Permeable Pavement
Quantity:
Proprietary System
Quantity:
Rainwater Harvesting
Quantity:
Sand Filter
Quantity:
8bormwaharVVetend
Quantity:
Wet Detention Basin
Quantity:
Disconnected Impervious Area
Present:
User Defined BN1P
Present:
ing O&M tables will
Locaton(a):
Looaton(s):
LouoUon(s):
Locabon(s):
LocaUon(s):
LooaUon(s):
Looation(s):
Looation(s):
LocaUon(s):
Location(s):
LocoMon(s):
LocoUon(s):
LocoUon(s):
LooaUon(s):
� LooeUon(s):
Elul Lei f NOW,
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed
for each BPNPabove, and attached O&M tables. | agree honotify NODENRofany problems with the system orprior hoany
changes to the system or responsible party.
° Responsible Party:
Title &Organization:
Street address:
City, state, zip:
Phnnenumber(s):
Signature:
W"h 6(, a Notary Public for the State of
County of -P-
Date: J1 St i ri
�
personally appeared before mathis | day of and
acknowledge the due, execution of the Operations and Maintenance Agreement.
Witness myhondand official seal,
Version 1.4
My commission expires aU5/209

Bloretention 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.
|fstanding water iopresent 2days after rainfall, conduct uninfiltration test ofthe soil media.
After the bioretentioncell is established, inspect it quarterly. Inspection activities shall boperformed oofollows and maintenance
activtmshall commence immediately hzremediateany problems observed per the table below.
1BMP 4ement:
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-6over -and
erosive gullies have formed.
water until it is established. Provide lime and a one-time fertilizer
Vegetation is too short or too
Maintain vegetation at a height of approximately six inches.
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
Stone verge is clogged or
Remove sediment and replace with clean stone.
covered in sediment (if
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 accum�_I`ated 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.
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 referably by hand.
The bloretention cell:
Best professional practices
Prune according to best professional practices.
vegetation
show that pruning is needed
to maintain optimal plant
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
Tree stakes/wires are present
Remove tree stake/wires (which can kill the tree if not removed).
six months after planting.
STORM-EZ 5/15/2019

BMP element:
Potential problem:
How to remediate the problem:
The bioretention celF—
soils and mulch
Mulch is breaking down or
has floated away.
Spot mulch if there are only random void areas. Replace whole mulch
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
clogged with sediment,
Determine the extent of the clogging - remove and replace Ither just
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 sh
pH has dropped or heavy
metals have accumulated in
Dolomitic lime shall be applied as recommended per the soil test and
toxic soils shall be removed, disposed of properly and replaced with
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.
Clea 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.
5US/20S
GTORM-EZVersion 1.4 O&M Manual Page yufy