SW3220202_O&M Agreement/Plan_20221101

Operation & Maintenance Agreement
Project Name:
Project Location:
WAXHAW TOWN CAMPUS
4220 WAXHAW MARVIN ROAD, WAXHAW, NC
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 & corresponding O&M sheets will
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:
DryPond Quantity:
Disconnected Impervious Surface Present:
User Defined SCM Present:
Low Density Present:
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:
1
No
No
No
ne aaaea
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 number(s):
Email:
Signature:
JEFF WELLS
TOWN MANAGER, TOWN OF WAXHAW
1150 N. BROOME ST.
WAXHAW, NC 28173
704-843-2195 EXT. 254
JJVYELL,S@WA H .COM
, a Notary Public for the State of
Date:
County of I v,.,X J.41b==:,._� , do hereby certify that Q , J,'.a ,
personally appeared before me this 0� L day of ou and .20 2
acknowledge the due execution of the Operations and Maintenance Agree ent .
Witness my hand and official seal, -,I AIL, 4..,
Wendy E Davenport
NOTARY PUBLIC
Union County, NC
My Commission Expires September 10, 2022
Seal
STORM-EZ
Version 1.5
My commission expires -Aii f 0 , 2 � oZ
0&M Agreement
1/24/2022
Page 1 of 1

Sand Filter Maintenance Requirements
Important operation and maintenance procedures:
- Manage the drainage area to reduce the sediment load to the sand filter.
- Clean out the sedimentation chamber or forebay whenever sediment depth exceeds six inches.
- At least once a year, skim the sand media
- Replace the sand filter media whenever it fails to function properly after maintenance.
After the sand filter is established, it shall be inspectgdarterly and within 24 hours after every storm event greater than 1.0 inches of
1.5 inches if in a Coastal County) Records of operation and maintenance shall be kept in a known set location and shall be availablf u
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:
Entire sand filter
Trashidebris is present.
Remove the trash/debris.
Adjacent pavement (if
Sediment is present on the
Sweep or vacuum the sediment as soon as possible.
applicable)
pp J
pavement surface.
Areas of bare soil and/or erosiN
Regrade the soil if necessary to remove the gully, plant ground cover an
The perimeter of the sand
gullies have formed.
water until it is established. Provide lime and a one-time fertilizer applica
filter
Vegetation is too short or too
Maintain vegetation at an appropriate height.
long.
The structure is clogged.
Unclog the structure and dispose of sediment in a location where it will n
The flow diversion structure
cause impacts to streams or the SCM.
(if applicable)
The structure is damaged.
Make any necessary repairs or replace if the damage is too much for re
The inlet pipe is clogged (if
Unclog the pipe and dispose of sediment in a location where it will not c
applicable).
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 devices suc
swale (if applicable).
reinforced turf matting or riprap to avoid future problems with erosion.
Stone verge is clogged or
covered in sediment (if
Remove sediment and clogged stone and replace with clean stone.
applicable).
Sediment has accumulated to
Search for the source of the sediment and remedy the problem if possibl
depth of greater than six inche
emove the sediment and dispose of it in a location where it will not cau
impacts to streams or the SCM.
Sediment chamber (forebay)
Erosion has occurred.
Provide additional erosion protection such as reinforced turf matting or ri
if needed to prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by hand. If a pesticide is used, wipe it on
plants rather than spraying.
son
on.
8Ti>)
ise
as
the

Sand Filter Maintenance Requirements (continued)
SCM element:
Potential problem:
How to remediate the problem:
Water is ponding on the surFa
heck to see if the collector system is clogged and Flush if necessary. If
Sand chamber and
for more than 24 hours after a
water still ponds, remove the top few inches of filter bed media and repla
underdrain collection systerr
storm.
water still ponds, then consult an appropriate professional.
Clogging has occurred.
gg g
Clean out the outlet device and dispose of sediment in a location where i
not cause impacts to streams or the SCM.
The outlet device
The outlet device is damaged.
Repair or replace the outlet device.
Erosion or other signs of
damage have occurred at the
Repair the damage and improve the flow dissipation structure.
outlet.
The receiving water
Discharges from the sand filter
are causing erosion or
Contact the local NCDEQ Regional Office.
sedimentation in the receiving
water.
will