20151229 Ver 1_More Info Received_20160318

Permit Number:
(to be provided by DEMLR)
Drainage Area Number:
High Flow Rate Bioretention Pond
Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will 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 removal efficiency of the BMP.
Important maintenance procedures:
The drainage area of the high flow rate bioretention pond will be carefully
managed to reduce the sediment load to the sand filter.
— Once a year, sand media will be skimmed.
The sand filter media will be replaced whenever it fails to function properly after
maintenance.
The high flow rate bioretention pond will be inspected once a quarter and within 24
hours after every storm event greater than 1.0 inches. 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.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire SMP
i Trash/ debris is present.
Remove the trash/ debris.
The grass filter strip or
Areas of bare soil and/or
Regrade the soil if necessary to
other pretreatment area
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Sediment has accumulated to
Search for the source of the
a depth of greater than six
sediment and remedy the problem if
inches.
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
The flow diversion
The structure is clogged.
Unclog the conveyance and dispose
structure (if applicable)
of any sediment off-site.
The structure is damaged.
Make any necessary repairs or
replace if damage is too large for
repair.
High Flow Rate Bioretention Pond O&M Page 1 of 3

Permit Number:
(to be provided by DEMLR)
BMP element:
Potential problem.
How I will remediate theproblem:
The bioretention cell:
Mulch is breaking down or
Spot mulch if there are only random
soils and mulch
has floated away.
void areas. Replace whole mulch
layer if necessary. Remove the
remaining mulch and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Soils and/or mulch are
Check to see if the collection system
clogged with sediment. Water
is clogged and flush if necessary. If
is ponding on the surface for
water still ponds, remove the top
more than 24 hours after a
few inches of the filter bed material
storm.
and replace. If water still ponds,
then consult an expert.
Outlet device
Clogging has occurred.
Clean out the outlet device and
dispose sediment in a location that
will not impact a stream or the
BMP.
The outlet device is damaged.
Repair the outlet device.
The emergency overflow
Erosion or other signs of
The emergency overflow berm will
berm
damage have occurred at the
be repaired or replaced if beyond
outlet.
repair.
The receiving water
Erosion or other signs of
Contact the N.C. Division of Water
damage have occurred at the
Resources 401 Certification Program
outlet.
staff at 919-707-8789.
High Flow Rate Bioretention Pond O&M Page 2 of 3

Permit Number:
(to be provided by DEMLR)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DEMLR of
any problems with the system or prior to any changes to the system or responsible parry.
Project name: 14AECO Site Development Project
BMP drainage area number:,
Print name: Kevin J. Baker
Title: Executive Director
Address: 1000A Ted Johnson Parkway, Greensboro, NC 27409
Phon
Signa
Date:
Note: The legally responsible party should not be a homeowners association unless
more than 50% of the lots have been sold and a resident of the subdivision has
been named the president.
I, Kimberly J. Hodges , a Notary Public for the State of
North Carolina , County of Guilford , do hereby certify that
Kevin T Baker personally appeared before me this 18th
day of March , 2016 , and acknowledge the due execution of the
forgoing high flow rate bioretention pond maintenance requirements. Witness my hand
and official seal,
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My Comm. Expires
January 17, 2018 U'
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My commission expires January 17, 2018
High Flow Rate Bioretention Pond O&M Page 3 of 3