SW3240701_O&M Agreement/Plan_20240724

Operation & Maintenance Agreement
Project Name: QuikTrip #1069
Project Location: East Marshville Boulevard, Marshville, NC 28103
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, leave attached the corresponding SCM O&M sheets, and delete all
SCM O&M Sheets not applicable to the project):
Infiltration Basin Quantity: Location(s):
Infiltration Trench Quantity: Location(s):
Bioretention Cell Quantity: Location(s):
Wet Pond Quantity: Location(s):
Stormwater Wetland Quantity: Location(s):
Permeable Pavement Quantity: Location(s):
Sand Filter Quantity: Location(s):
Rainwater Harvesting Quantity: Location(s):
Green Roof Quantity: Location(s):
Level Spreader- Filter Strip Quantity: Location(s):
Proprietary System Quantity: 1 Location(s): About 20ft offset of south property line.
Treatment Swale Quantity: Location(s):
Dry Pond Quantity: 1 Location(s): Southeast corner of property.
Disconnected Impervious Surface Present: No Location(s):
User Defined SCM Present: No Location(s):
Low Density Present: No Type:
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: Mark Horton
Title&Organization: Project Manager-QuikTrip Corporation
Street address: 4705 South 129th East Avenue
City, state,zip: Tulsa, OK 74134
Phone number(s): 918-615-7700
Email: [e-mail]
Signature: Date:
I, , a Notary Public for the State of
County of , do hereby certify that
personally appeared before me this day of and
acknowledge the due execution of the Operations and Maintenance Agreement.
Witness my hand and official seal,
Seal My commission expires

Dry Pond Maintenance Requirements
Important operation and maintenance procedures:
- The drainage area will be managed to reduce the sediment load to the dry pond.
- Immediately after the dry pond is established, the vegetation will be watered twice weekly if needed until
the plants become established (commonly six weeks).
- After the initial fertilization to establish vegetation in the dry pond,fertilizer will not be applied to the dry
pond.
- The vegetation in and around the basin will be maintained at a height of approximately six inches.
- At least once annually, a dam safety expert will inspect the embankment.Any problems that are found will
be repaired immediately.
After the dry pond is established, it shall be inspected quarterly and within 24 hours after every storm event greater than
1.0 inches. Records of operation and maintenance shall be kept in a known set location and shall be available upon 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:
The entire SCM Trash/debris is present. Remove the trash/debris.
Areas of bare soil and/or Regrade the soil if necessary to remove the gully, plant ground
The perimeter of the SCM erosive gullies have formed. cover and water until it is established. Provide lime and a one-time
fertilizer application.
The inlet pipe is clogged (if Unclog the pipe. Dispose of the sediment in a location where it will
applicable). not cause impacts to streams or the SCM.
The inlet pipe is cracked or
The inlet device otherwise damaged (if Repair or replace the pipe.
applicable).
Erosion is occurring in the Regrade the swale if necessary and provide erosion control
Erosion
(if applicable). devices such as reinforced turf matting or riprap to avoid future
swaleproblems with erosion.
Sediment has accumulated Search for the source of the sediment and remedy the problem if
to a depth greater than the possible. Remove the sediment and dispose of it in a location
original design depth for where it will not cause impacts to streams or the SCM.
sediment storage.
The forebay
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. If pesticide is used,wipe it
on the plants rather than spraying.
Sediment has accumulated Search for the source of the sediment and remedy the problem if
to a depth greater than the possible. Remove the sediment and dispose of it in a location
original design depth for where it will not cause impacts to streams or the SCM.
sediment storage.
The main treatment area Water is standing more than Check the outlet structure for clogging. If it is a design issue,
5 days after a storm event. consult an appropriate professional.
Weeds and noxious plants Remove the weeds, preferably by hand. If pesticide is used, wipe it
are growing in the main on the plants rather than spraying.
treatment area.

Dry Pond Maintenance Requirements(continued)
SCM element: Potential problem: How to remediate the problem:
Shrubs have started to grow
on the embankment. Remove shrubs immediately.
Evidence of muskrat or Consult a professional to remove muskrats or beavers and repair
beaver activity is present. any holes or erosion.
The embankment A tree has started to grow on the embankment. Consult a dam safety specialist to remove the tree.
An annual inspection by an
appropriate professional Make all needed repairs immediately.
shows that the embankment
needs repair.
Clogging has occurred. Clean out the outlet device. Dispose of the sediment in a location
gg g where it will not cause impacts to streams or the SCM.
The outlet device The outlet device is Repair or replace the outlet device.
damaged
Erosion or other signs of
damage have occurred at Repair the damage and improve the flow dissipation structure.
the outlet.
The receiving water Discharges from the dry
pond are causing erosion or Contact the local NCDEQ Regional Office.
sedimentation in the
receiving water.
Dry Detention Pond Design Summary
DRY POND ID FOREBAY MAIN POND
1 Temporary Pool El: Temporary Pool El: 536.00
Clean Out Depth: Clean Out Depth: 1.1
Pretreatment No Sediment Storage El: Sediment Storage El: 534.9
Has Veg.Filter No Bottom Elevation: Bottom Elevation: 534.50

Proprietary System Maintenance Requirements
How many devices are Click here to update O&M
Contech Jellyfish? Manual
Important operation and maintenance procedures:
- The drainage area will be carefully managed to reduce the sediment load to the Snout.
- The sedimentation chamber will be cleaned out whenever sediment depth exceeds half of the sump.
The Jellyfish System will be inspected annually. 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 to remediate the problem:
Entire BMP 'Trash/debris is present. 'Remove the trash/debris.
Adjacent pavement (if Sediment is present on the pavement Sweep or vacuum the sediment as soon as possible.
applicable) surface.
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 damage is too large for
repair.
StormFilter Cartridges Cartridges not performing as Replace cartridges per manufacturer's recommendations.
designed-see Contech l&M
document to determine if cartridge
maintenance is required.
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 local NCDEQ Regional Office.
have occurred at the outlet.
All other operation and maintenance activities should be in accordance with Contech's Jellyfish Inspection and Maintenance
Procedures document.Any problems that are found shall be repaired immediately.The responsible party shall have received and
understand Contech's Jellyfish Inspection and Maintenance Procedures document.
ATTACH MANUFACTURER'S MAINTENANCE MANUAL FOR ALL PROPRIETARY DEVICES

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Setting new standards in Stormwater in
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The Jellyfish Filter is a stormwater quality treatment
technology featuring high flow pretreatment and membrane Jellyfish®Filter
filtration in a compact stand-alone system.Jellyfish removes
floatables,trash,oil,debris,TSS,fine silt-sized particles, and a
high percentage of particulate-bound pollutants; including
phosphorus, nitrogen, metals and hydrocarbons.The high
surface area membrane cartridges,combined with up-flow
hydraulics,frequent, passive backwashing,and rinseable/
reusable cartridges ensure long-lasting performance.
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How the Jellyfish° Filter Treats
Stormwater
Tested in the field and laboratory...
■ Stormwater enters the Jellyfish through the inlet pipe
and traps floating pollutants behind the maintenance
access wall and below the cartridge deck.
■ Water is conveyed below the cartridge deck where a 411.
separation skirt around the cartridges isolates oil,trash
and debris outside the filtration zone.
■ Water is directed to the filtration zone and up through
the top of the cartridge where it exits via the outlet pipe.
■ The membrane filters provide a very large surface area
to effectively remove fine sand and silt-sized particles,
and a high percentage of particulate-bound pollutants
such as nitrogen,phosphorus,metals,and hydrocarbons
while ensuring long-lasting treatment.
■ As influent flow subsides,the water in the backwash
pool flows back into the lower chamber.This passive
backwash extends cartridge life.
■ The draindown cartridge(s)located outside the
backwash pool enables water levels to balance. Jellyfish'Filter
Standard Configuration
Learn More:
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Setting new standards in Stormwater Treatment

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The pleated tentacles of the Jellyfish®Filter provide
a large surface area for pollutant removal.
POLLUTANT OF CONCERN %REMOVAL . . .`r`-
Total Trash 99%
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Total Suspended Solids(TSS) 89% -
Total Phosphorus(TP) 59%
Total Nitrogen(TN) 51%
Sources:
Total Copper(TCu) > 50% TARP II Field Study-2012 JF 4-2-1 Configuration
MRDCFIoatables Testing-2008JF6-6-1 Configuration
Total Zinc(TZn) > 50%
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Jellyfish° Filter Features and Benefits
FEATURE BENEFITS
High surface area membrane filtration Low flux rate promotes cake filtration and slows membrane
occlusion
High design treatment flow rate per cartridge(up to 80 Compact system with a small footprint,lower construction cost
gpm(5 Us))
Low driving head(typically 18 inches or less(457 mm)) Design flexibility,lower construction cost
Lightweight cartridges with passive backwash Easy maintenance and low life-cycle cost
The Jellyfish Filter can be
�,� configured in a manhole,
catch basin, or vault.
Select Jellyfish° Filter Certifications
and Verifications
The Jellyfish Filter has been reviewed by numerous state and
federal programs,including:
• Washington State Department of Ecology(TAPE)GULD—BASIC, � • ,
Phosphorus I
• Virginia Department of Environmental Quality(VA DEQ)
• Texas Commission of Environmental Quality(TCEQ) • Aft. •
• Canada ISO 14034 Environmental Management—Environmental • ✓
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Technology Verification(ETV) •
• Philadelphia Water District(PWD) •
• Maryland Department of the Environment(MD DOE)
Field tested and performance verified

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Jellyfish° Filter Maintenance � , .�
• Jellyfish Filter cartridges are light weight and reusable ``
• Maintenance of the filter cartridges is performed by removing, .
rinsing and reusing the cartridge tentacles. I , 'if.
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Replacement is anticipated every 2-5 years.
• Contech®has created a network of Certified Maintenance Providers
to provide maintenance on stormwater BMP's. The Jellyfish®Filter tentacle is light
and easy to clean.
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STORMWATER , PIPE STRUCTURES
SOLUTIONS SOLUTIONS IT9111 SOLUTIONS
Few companies offer the wide range of high- THE CONTECH WAY
Contech®Engineered Solutions provides innovative,cost-effective
quality stormwater resources you can find with
site solutions to engineers,contractors,and developers on projects
us—state-of-the-art products,decades of across North America.Our portfolio includes bridges,drainage,
expertise,and all the maintenance support you erosion control,retaining wall,sanitary sewer and stormwater
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need to operate your system cost-effectively.
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AND DECISIONS,AND ARE NEITHER GUARANTEES NOR WARRANTIES OF SUITABILITY FOR ANY ENGINEERED SOLUTIONS
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