SW6130201_O&M Agreement_20130222

Permit Number: SWC 13ozq
(to be provided b D{VQ)
Drainage Area Number:
Sand Filter 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 will be carefully managed to reduce the sediment load to the sand filter.
— The sedimentation chamber or forebay will be cleaned out whenever sediment depth exceeds
six inches.
— Once a year, sand media will be skimmed.
— The sand filter media will be replaced whenever it fails to function properly after maintenance.
The sand filter 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 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:
Potential problem:
How I will remediate the problem:
Entire BMP
Trash/debris is resent.
Remove the trash/debris.
Adjacent pavement (if
Sediment is present on the
Sweep or vacuum the sediment as soon as
applicable)
pavement surface.
possible.
Perimeter of sand filter
Areas of bare soil and/or erosive
Regrade the soil if necessary to remove the
gullies have formed.
gully, and then plant a ground cover and
water until it is established. Provide lime
and a one-time fertilizer application.
Vegetation is too short or too long.
Maintain vegetation at an appropriate
height.
Flow diversion structure
The structure is clogged.
Unclog the conveyance and dispose of any
sediment offsite.
The structure is damaged.
Make any necessary repairs or replace if
is too large for re air.
Forebay or pretreatment area
Sediment has accumulated to a
-damage
Search for the source of the sediment and
depth of greater than six inches.
remedy the problem if possible. Remove
the sediment and stabilize or dispose of it
in a location where it will not cause
to streams or the BMP.
Erosion has occurred.
-impacts
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
a pesticide is used, wipe it on the plants
rather than
RECEIVED
FEB 0 6 2013
Form SW40I-Sand Filter O&M-Rev.4 2009Sept 17 DENR-FAYETTEMLLEREGIONALOFFICE Page Iof3

BMP element:
Potentialproblem:
How I will remediate theproblem:
Filter bed and underdrain
collection system
Water is ponding on the surface for
more than 24 hours after a storm.
Check to see if the collector system is
clogged and flush if necessary. If water
still ponds, remove the top few inches of
filter bed media and replace. If water still
ponds, then consult an expert.
Outlet device
Clogging has occurred.
Clean out the outlet device. Dispose of the
sediment offsite.
The outlet device is damaged
Repair or replace the outlet device.
Receiving water
Erosion or other signs of damage
Contact the NC Division of Water Quality
have occurred at the outlet
401 Oversight Unit at 919-733-1786.
Form SW401-Sand Filter O&M-Rev.4 2009Septl7 Page 2 of 3

`'- Permit Number: �j''✓C 131a Ze/
(lobe provided by DIVA)
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 DWQ of any problems with the system or prior
to any changes to the system or responsible party.
Project name:N. Parker Church - FDS
BMP drainage area number:
Print name: m tZ i kl n M o Ir5 e_'
- ra(_ i I i 4-
Address:10401 Monroe RoadlMatthews, NC 28105
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.
le e S• 1 & rh saw► a Notary Public for the State of
Q of -4 h Cara 1 i r• 4 , County of NAec L t•nbu• :b-- , do hereby certify that
'Mar , U, r, W4. Wlw se personally appeared before me this 4` day of
Fe brtiar 2at3 , and acknowledge the due execution of the forgoing sand filter
maintenance requirements. Witness my hand and official seal,
&e H
a
EN S. RAMSEYARY PUBLIC County,North Carolinaion Expires 12/1612016
SEAL
My commission expires C e urwber Ito, Sol la
Form SW401-Sand Filter O&M-Rev.4 2009Septl7 Page 3 of 3