SW5120101_O&M Agreement_20120402

SlN.SI Ze t o 1
Permit Number: P1
(!o be provided by DWQ)
Drainage Area Number: 1 g Z _
Bioretention Operation and Maintenance Agreement
4
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 `a
corrected, repaired or replaced immediately. These deficiencies can affect the integrit�l��,`� . 7 SRO,
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:�E
— 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.
After the bioretention cell is established, I will inspect it once a month 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 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:
Potentialproblems:
How I will remediate theproblem:
The entire BMP
Trash/debris is present,
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
bioretention cell
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.
The inlet device. pipe,
The pipe is clogged (if
Unclog the pipe. Dispose of the
stone verge or swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
Swale (if applicable),
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
futureroblems with erosion.
Stone verge is clogged or
Remove sediment and clogged I
covered in sediment (if
stone and replace with clean stone.
applicable).
�^ �E4 . 11 �u11 E-
APR - 2 2012
Form SW401-Bioretention O&M-Rev.3-----Pa e 1 o 4
NC DEiN;R
Raleigh �r ai «ai Office

BMP element:
Potentialproblems:
How I will remediate theproblem:
The pretreatment area
Flow is bypassing
Regrade if necessary to route all
pretreatment area and/or
flow to the pretreatment area.
allies have formed.
Restabilize the area after grading,
Sediment has accumulated to
Search for the source of the
a depth greater than three
sediment and remedy the problem if
inches.
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 the weeds, preferably by
hand.
The bioretention cell:
Best professional practices
Prune according to best professional
vegetation
show that pruning is needed
practices.
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. 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
six months after planting.
can kill the tree if not removed).
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 much and replace with
triple shredded hard wood mulch at
a maximum de th of three inches.
Soils and/or mulch are
Determine the extent of the clogging
clogged with sediment.
- remove and replace either 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 shows that
-Dolomitic lime shall be applied as
pH has dropped or heavy
recommended per the soil test and
metals have accumulated in
toxic soils shall be removed,
the soil media.
disposed of properly and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev.3 Page 2 of 4

BMP element:
Potentialproblems:
How I will remediate theproblem:
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 NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Bioretention O&M-Rev.3 Page 3 of 4

5 W '5-I 2�010
Pen -nit Number: ,tf)ip
(to be provided b), DIVQ)
acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:Camp Butner Cantonment Trailer Relocations
BMP drainage area number:l&2
Print name: LTC Toni Coats
Title: Construction Facilities Management Officer (CFMO), North Carolina National
and
Address:4105 Reedy Creek Road, Raleigh, NC 27607
Phone:[phone] pp
Signature:
Date: 9 1,
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.
e I iUr`E'�I�e/~ , a Notary Public for the State of
County of �ot �� , do hereby certify that
C Q personally appeared before me this
day of 3,2 pp -�6ep , 20 t ( , and acknowledge the due execution of the
forgoing bioretention maintenance requiremepts. Witness ,hand and official seal,
RUSSELL B NiEMYER
NOTARY PUBLIC
WAKE COUNTY, NC
My Commission FrxpWw 3-%2015
S IAA 1-
My commission expires
Form SW401-Bioretention I&M-Rev. 2
Page 4 of 4

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t , 5ti%S 1Z.ol o /
Permit Number:
(to be providecl by DbvQJ
Drainage Area Number: "Z
Filter Strip, Restored Riparian Buffer and Level Spreader
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 Iocation. 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:
- Immediately after the filter strip is established, any newly planted vegetation
will be watered twice weekly if needed until the plants become established
(commonly six weeks).
Once a year, the filter strip will be reseeded to maintain a dense growth of
vegetation
Stable groundcover will be maintained in the drainage area to reduce the
sediment load to the vegetation.
- Two to three times a year, grass filter strips will be mowed and the clippings
harvested to promote the growth of thick vegetation with optimum pollutant \
removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and
may be allowed to grow as tall as 12 inches depending on aesthetic requirements
(NIPC,1993). Forested filter strips do not require this type of maintenance. n ��
- Once a year, the soil will be aerated if necessary. ° s
- Once a year, soil pH will be tested and lime will be added if necessary. ��
After the filter strip is established, it will be inspected quarterly and within 24 hours
after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal: County).
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 filter strip
Trash/debris is present.
Remove the trash/debris.
system
The flow splitter device
The flow splitter device is
Unclog the conveyance and dispose
(if applicable)
clogged.
of any sediment off -site.
The flow splitter device is
Make any necessary repairs or
damaged.
replace if damage is too large for
repair.
Form SWU40I-Level Spreader, Filter Strip, Restored Riparian Buffer 0&M-Rev.3 Page l ol'4

BMP element:
The Swale and the level
lip
The bypass channel
The filter strip
The receiving water
Potential problem:
The swale is clogged with
sediment.
The level lip is cracked,
settled, undercut, eroded or
otherwise damaged.
There is erosion around the
end of the level spreader that
shows stormwater has
bypassed it.
Trees or shrubs have begun
to grow on the swale or just
downslope of the level lip.
Areas of bare soil and/or
erosive gullies have formed
Turf reinforcement is
damaged or ripap is rolling
downhill,
Grass is too short or too long
(if applicable).
Areas of bare soil and/or
erosive gullies have formed.
Sediment is building up on
the filter strip.
Plants are desiccated
Plants are dead, diseased or
dying.
Nuisance vegetation is
choking out desirable species.
Erosion or other signs of
damage have occurred at the
outlet.
How I will remediate the problem:
Remove the sediment and dispose
of it off -site.
Repair or replace lip.
Regrade the soil to create a berm
that is higher than the level lip, and
then plant a ground cover and
water until it is established. Provide
lime and a one-time fertilizer
application. _
Remove them.
Regrade the soil if necessary to
remove the gully, and then
reestablish proper erosion control,
Study the site to see if a larger
bypass channel is needed (enlarge if
necessary). After this, reestablish
the erosion control material.
Maintain grass at a height of
approximately three to six inches.
Regrade the soil if necessary to
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Remove the sediment and
restabilize the soil with vegetation if
necessary. Provide lime and a one-
time fertilizer application.
Provide additional irrigation and
fertilizer as needed.
Determine the source of the
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application.
Remove vegetation by hand if
possible. If pesticide is used, do not
allow it to get into the receiving
water.
Contact the NC Division of Water
Quality local Regional Office, or the
401 Oversight Unit at 919-733-1786.
Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 2 of 4

Permit Number: S �V_5__l Z tI O/
(to be provided by DIVQ)
I acknowledge and agree by my signature below that 1 am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:Camp Butner Cantonment Trailer Relocations
BMP clrainage area number:2
Print name: LTC Toni Coats
Title: Construction Facilities Management Officer (CFMO), North Carolina National
Guard
Address:4105 Reedy Creek Road, Raleigh, NC 27607
Phone:[phone]
A z_It
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.
a Notary Public for the State of
G C��6��, , County of ke , do hereby certify that 1-17
T t Z C,--"a� personally appeared before me this
day of _S e, 2 p , and acknowledge the due execution of the
forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements.
Witness my hand and official seal;
RUSSELL B NIEMYER
NOTARY RMI.IC
WAKE COUNTY, NC
W Canmbalon Explms 34"15
SEAL
My commission expires 3 — t16 — Z 0 ( 5-
Form SWU40I-Level Spreader, Filter Strip, Restored Riparian Buffer 0&M-Rev.3 Page') of'4

Permit Number:
(to be provided by UINQ)
Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 4 of`4