SW6221006_O&M Agreement/Plan_20230214

Operation & Maintenance Agreement
Project Name:
Project Location:
+/-20,000-SF Distr. Facility Expansion for CCBCC-Fayetteville
800 Tom Starling Rd, Cumberland County, 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 & correspo
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:
1
Treatment Swale
Quantity:
Dry Pond
Quantity:
Disconnected Impervious Surface
Present:
No
User Defined SCM
Present:
No
Low Density
Present:
No
g O&M sheets will
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:
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to
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:
Sign
County o
personally appearea Derore me tnis
Melanie Sabella
VP, Technical Services - Coca-Cola Bottling Co. Consolidated
5001 Chesapeake Dr.
Charlotte, NC 28216
704-488-0429
[[e-mail]
Date: j
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day of t—(')rUG, r L4 2 D Z and
acknowledge the due execution of the Operations and Maintenance Agreement.
Witness my hand and official seal,
EN
ryn Thomas
tary Public
delf County
rth Carolina
ion Expires 12/8J2027
eU
My commission expires 191/7 a
STORM-EZ 2/7/2023
Version 1.5 O&M Agreement Page 1 of 2

Proprietary System Maintenance Requirements
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Contech StormFilters?
ATTACH MANUFACTURER'S MAINTENANCE MANUAL FOR ALL PROPRIETARY DEVIL

Filterra Bioscape
Owner's Manual
(No Precast Vault Provided)
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C% NTECH®
ENGINEERED SOLUTIONS
This Owner's Manual applies to Filterra Bioscape ONLY (Filterra installed directly into an excavated
basin or other customer provided container, such as a large cast -in -place vault).

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Table of Contents
Introduction................................................................................4
Activation Overview.....................................................................4
Filterra Plant Selection Overview...................................................5
Warranty Overview......................................................................5
Routine Maintenance Guidelines...................................................5
PlantCare..................................................................................7
Maintenance Visit Procedure.........................................................8
Maintenance Checklist...............................................................10
Appendix 1 — Activation Package ................................................ I 1
C% NTECH®
ENGINEERED SOLUTIONS
www.ContechES.com/filterra 1 800-338-1122 3

Introduction
Thank you for your purchase of the Filferra® Bioscape® System. Filferra® is a specially engineered sformwafer treatment system
incorporating high performance biofilfrafion media to remove pollutants from sformwafer runoff. The system's biota (vegetation
and soil microorganisms) then further breakdown and absorb captured pollutants. All components of the system work together
to provide a sustainable long-term solution for treating sformwafer runoff.
Included with your purchase is a Supervised Activation service as well as a 1-year warranty from delivery of the system. In some
cases, a Final Site Assessment (assessment of unit condition, mulch replacement, debris removal and pruning) may also be
included for systems smaller than 1000 sf in size. Check your order documentation for further information.
Filferra® Bioscape® systems should not be activated until the site is stabilized to prevent construction related runoff from
entering and contaminating the system. For Filferra® Bioscape® systems installed within an excavated basin, Confech provides
an erosion control sock around the perimeter to provide an extra layer of protection. However, these protection devices are
intended as a best practice and cannot fully prevent contamination. If is the purchaser's responsibility to provide adequate
measures to prevent construction related runoff from entering the Filferra® Bioscape® system.
Design and Installation
Each project presents different scopes for the use of Filferra® Bioscape® systems. Information and help may be provided
to the design engineer during the planning process. Correct Filferra® Bioscape® sizing (by rainfall region) is essential to
predict pollutant removal rates for a given area. The engineer shall submit calculations for approval by the local jurisdiction.
The contractor is responsible for the correct installation of Filferra® Bioscape® systems as shown in approved plans. A
comprehensive installation manual is available from Confech.
Activation Overview
Activation of the Filferra° Bioscape° system is a procedure completed by the contractor to place the system info working
condition. This involves the following items:
• Installation of the Filferra® Bioscape® underdrain system
• Installation of the Filferra® media layer
• Planting of the system's vegetation
• Placement of pretreatment mulch layer using mulch certified for use in Filferra® systems
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Minimum Requirements
The minimum requirements for Filterra® Bioscape®Activation are as follows:
1 . The purchaser must have sourced vegetation meeting the requirements outlined in the Filterra® Bioscape® Activation Package
2. A pre -construction meeting is required to discuss site requirements, logistics planning and activation FAQ and red flags.
3. The site landscaping must be fully stabilized, i.e. full landscaping installed and some grass cover (not just straw and seed) is
required to reduce sediment transport. Construction debris and materials should be removed from surrounding area.
4. Final paving must be completed. Final paving ensures that paving materials will not enter and contaminate the Filterra®
system during the paving process, and that the plant will receive runoff from the drainage area, assisting with plant survival
for the Filterra® system.
5. All immediate upstream and downstream structures should be placed with piping info the system already installed for
connection during activation.
An Activation Checklist is included in the Filterra® Bioscape® Activation Package to ensure proper conditions are met for
Activation. A charge of $1500.00 will be invoiced for each Supervised Activation visit requested by Customer where Confech
determines that the site does not meet the conditions required for Activation.
Filterra Plant Selection Overview
A Plant List is available on the Confech websife highlighting recommended plants for Filterra® Bioscape® systems in your area.
Keep in mind that plants are subject to availability due to seasonality. Plants installed in the Filterra® Bioscape® system shall be
container -grown plants (max 15 gallon) from nursery stock and will be immature in height and spread at Activation. If is the
responsibility of the owner to provide adequate irrigation when necessary to the plant of the Filterra® Bioscape® system. The
"Filterra® Bioscape® Activation Package" document is included as an appendix and discusses proper selection of the plants within
Filterra® Bioscape® systems.
Warranty Overview
Refer to the Confech® Engineered Solutions LLC Sformwafer Treatment System LIMITED WARRANTY for further information.
The following conditions may void the Filterra® Bioscape® system's warranty and waive the manufacturer provided Final Site
Assessment (if applicable):
• Unauthorized activation or performance of any of the items listed in the activation overview without Confech supervision or
input
• Removal of any Filterra® system components
• Failure to prevent construction related runoff from entering the Filterra° system
• Failure to properly store and protect any Filterra® components (including media and underdrain stone) that are shipped
separately to the site
Routine Maintenance Guidelines
With proper routine maintenance, the biofilfrafion media within the Filterra® Bioscape® system should last as long as traditional
biorefenfion media. Routine maintenance can be provided by certified maintenance providers listed on the Confech websife.
Training can also be provided to other sformwafer maintenance or landscape providers.
www.ContechES.com/filterra 1 800-338-1122

Why Maintain?
All stormwafer treatment systems require maintenance for
effective operation. This necessity is often incorporated in
your property's permitting process as a legally binding BMP
maintenance agreement. Other reasons to maintain are:
• Avoiding legal challenges from your jurisdiction's
maintenance enforcement program.
• Prolonging the expected lifespan of your Filferra® media.
• Avoiding more costly media replacement.
• Helping reduce pollutant loads leaving your property.
Simple maintenance of the Filferra® Bioscape® is required to
continue effective pollutant removal from stormwafer runoff
before discharge into downstream waters. This procedure
will also extend the longevity of the living biofilter system.
The unit will recycle and accumulate pollutants within the
biomass, but is also subjected to other materials entering the
inlet. This may include trash, silt and leaves etc. which will be
contained above the mulch layer. Too much silt may inhibit
the Filferra's flow rate, which is the reason for site stabilization
before activation. Regular replacement of the mulch stops
accumulation of such sediment.
When to Maintain?
Maintenance visits are typically scheduled seasonally; the
spring visit aims to clean up after winter loads including salts
and sands while the fall visit helps the system by removing
excessive leaf liffer.
It has been found that in regions which receive between
30-50 inches of annual rainfall, (2) two visits are generally
recommended; In regions with less rainfall often only (1)
one visit per annum is sufficient. Varying land uses can affect
maintenance frequency; e.g. some fast food restaurants
require more frequent trash removal. Contributing drainage
areas which are subject to new development wherein the
recommended erosion and sediment control measures have
not been implemented may require additional maintenance
visits.
Some sites may be subjected to extreme sediment or trash
loads, requiring more frequent maintenance visits. This is
the reason for detailed notes of maintenance actions per
unit, helping the Manufacturer and Owner predict future
maintenance frequencies, reflecting individual site conditions.
Owners must promptly notify the maintenance provider of any
damage to the planf(s), which consfifufe(s) an integral part of
the biorefenfion technology.
Exclusion of Services
Clean up due to major contamination such as oils, chemicals,
toxic spills, etc. will result in additional costs and are not
included as part of the Final Site Assessment (if applicable).
Should a major contamination event occur the Owner must
block off the outlet pipe of the Filferra® (where the cleaned
runoff drains to, such as drop inlet) and block off the throat of
the Filferra®. The Supplier should be informed immediately.
Maintainenance Visit Summary
Maintenance visits are typically scheduled seasonally; the
spring visit aims to clean up after winter loads including salts
and sands while the fall visit helps the system by removing
excessive leaf liffer.
Inspection of Filferra® Bioscape® and surrounding area
2. Removal of erosion control stones
3. Removal of debris, trash and mulch
4. Removal and disposal of erosion control sock from system
perimeter (should be completed at 6 month or 12 month
maintenance depending upon site characteristics). A new
erosion control sock is no longer needed after the first
year.
5. Mulch replacement
6. Plant health evaluation and pruning or replacement as
necessary
7. Clean area around Filferra®
8. Complete paperwork
www.ContechES.com/filterra 1 800-338-1122

Plant Care for Filterra° Systems
After Activation, the Contractor is responsible for proper care
of the vegetation until the site is handed over to the Owner.
After that, if is the Site Owner's responsibility to care for the
vegetation. Confech recommends the following care for the
plants:
i
4
To prevent transplant shock (especially if planting fakes
place in the hot season), if may be necessary to prune
some of the foliage to compensate for reduced roof
uptake capacity. This is accomplished by pruning away
some of the smaller secondary branches or a main
scaffold branch if there are too many. Too much foliage
relative to the roof ball can dehydrate and damage the
plant.
Plant staking may be required.
With all frees/shrubs, remove dead, diseased, crossed/
rubbing, sharply crotched branches or branches growing
excessively long or in wrong direction compared to
majority of branches.
Confech recommends irrigation of the Filterra®
Vegetation. The following guidance will help to ensure
the vegetation is properly irrigated.
Irrigation Recommendations:
• Each Filterra° system must receive adequate irrigation to
ensure survival of the living system during periods of drier
weather.
• Irrigation sources include rainfall runoff from downspouts
and/or gutter flow, applied wafer through the free grate
or in some cases from an irrigation system with emiffers
installed during construction.
• At Activation: Apply about one (cool climates) to two
(warm climates) gallons of wafer per inch of trunk
diameter over the roof ball.
• During Establishment: In common with all plants, each
Filterra® plant will require more frequent wafering during
the establishment period. One inch of applied wafer
per week for the first three months is recommended for
cooler climates (2 to 3 inches for warmer climates). If the
system is receiving rainfall runoff from the drainage area,
then irrigation may not be needed. Inspection of the soil
moisture content can be evaluated by gently brushing
aside the mulch layer and feeling the soil. Be sure to
replace the mulch when the assessment is complete.
Irrigate as needed**.
• Established Plants: Established plants have fully
developed root systems and can access the entire water
column in the media. Therefore irrigation is less frequent
but requires more applied water when performed. For
a mature system assume 3.5 inches of available water
within the media matrix. Irrigation demand can be
estimated as 1" of irrigation demand per week. Therefore
if dry periods exceed 3 weeks, irrigation may be required.
** Five gallons per square yard approximates 1 inch of water.
Therefore for a 6' x 6 foot FilterraO approximately 20-60
gallons of applied water is needed. To ensure even distribution
of water it needs to be evenly sprinkled over the entire surface
of the filter bed, with special attention to make sure the root
ball is completely wetted. NOTE: if needed, measure the
time it takes to fill a five gallon bucket to estimate the applied
water flow rate. Then calculate the time needed to irrigate
the Filterra®, For example is the flow rate of the sprinkler is 5
gallons/minute then it would take 12 minutes to irrigate a 6'x6'
filter.
Plant Replacement:
In some cases, plants will require replacement. Please follow
the procedures below to ensure a properly functioning Filterra®
system.
1 . Remove the existing plant, and leave as much of the
Filterra® media in place as possible.
2. Select a replacement per the Filterra® Bioscape®
Activation Package.
3. Prior to removing the plant from the container, ensure the
soil moisture is sufficient to maintain the integrity of the
roof ball. If needed, pre -wet the container plant.
4. Cut away any roots which are growing out of the
container drain holes.
5. Planf(s) should be carefully removed from the pot by
gently pounding on the sides of the container with the fist
to loosen roof ball. Then carefully slide out. Do not lift
planf(s) by trunk as this can break roots and cause soil to
fall off. Extract the roof ball in a horizontal position and
support if to prevent if from breaking apart. Alternatively,
the pot can be cut away to minimize roof ball disturbance.
6. Excavate a hole with a diameter 4" greater than the roof
ball, gently place the plant(s).
7. Plant the tree/shrub/grass with the fop of the roof ball 1 "
above surrounding media to allow for settling.
8. All plants should have the main stem centered in the free
grate (where applicable) upon completion of installation.
9. Reinstall or add mulch to a depth of 3" per Confech's
mulch specifications for Filterra® systems.
www.ContechES.com/filterra 1 800-338-1122 7

Maintenance Visit Procedure
Keep sufficient documentation of maintenance actions to predict location specific maintenance frequencies and
needs. An example Maintenance Report is included in this manual.
1. Inspection of Filterra and surrounding area
• Record individual unit before maintenance with photograph (numbered).
Record on Maintenance Report (see example in this document) the following:
Record on Maintenance Report the following:
Standing Wafer yes no
Is Bypass Clear yes no
If yes answered to any of these observations, record with close-up
photograph (numbered).
2. Removal of erosion control stones
• Set aside erosion control stones for reuse after mulch has been replaced.
• Dig out silt (if any) and mulch and remove trash & foreign items.
Record on Maintenance Report the following:
Is scour present around the inlet areas? yes I no
If answering yes, consider adding additional erosion control stone.
3. Removal of debris, trash and mulch
• After removal of mulch and debris, measure distance from the fop of the
Filferra engineered media soil to the fop of the fop slab. Compare the
measured distance to the distance shown on the approved Contract Drawings
for the system. Add Filferra media (not fop soil or other) to bring media up as
needed to distance indicated on drawings.
' Record on Maintenance Report the following:
Silf/Clay yes no
Bypass Clear yes no
Leaves yes no
# of Buckets Removed
3
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4. Removal and Disposal of Erosion Control Sock
• Remove and dispose of erosion control sock if site conditions allow (site should be fully stabilized). Erosion control
sock is no longer needed after 1-year post activation.
5. Mulch Replacement
• Add mulch evenly across entire system to a depth of three inches.
6. Vegetation health evaluation and pruning
• Examine the vegetation health and replace if necessary. Prune vegetation to encourage growth in the correct
directions. Since Filferra® Bioscape® systems can contain many plants, only notation of individual damaged or
unhealthy plants is necessary.
Record on Maintenance Report the following:
Vegetation Health
Vegetation Damage
Document damaged or unhealthy plants with photographs.
7. Clean side slopes and area around the Filterra Bioscape system
• Remove all trash and debris to be disposed of appropriately.
8. Complete paperwork
• Complete Maintenance Report. Some jurisdictions require submission of maintenance reports in accordance with
approvals. If is the responsibility of the owner to comply with local regulations.
Maintenance Tools, Safety Equipment and Supplies
Ideal fools include: camera, bucket, shovel, broom, pruners, hoe/rake, and tape
measure. Appropriate Personal Protective Equipment (PPE) should be used in
accordance with local or company procedures. This may include impervious gloves
where the type of trash is unknown, high visibility clothing, barricades when working in
close proximity to traffic and safety hats, glasses, and shoes.
Most visits require minor trash removal and a full replacement of mulch. Mulch should
be a double shredded, hardwood variety.
www.ContechES.com/filterra 1 800-338-1122 9

Maintenance Checklist
Drainage
System Failure
Problem
Conditions to Check
Condition that Should Exist
Actions
Excessive
Accumulated sediments or
Inlet should be free of
obstructions allowing free
Sediments and/or trash should
Inlet
sediment or trash
trash impair free flow of water
distributed flow of water into
be removed.
accumulation.
into Filterra.
Filterra.
Trash and debris should be
Mulch Cover
Trash and floatable
Excessive trash and/or debris
Minimal trash or other debris
removed and mulch cover raked
debris accumulation.
accumulation.
on mulch cover.
level. Ensure bark nugget mulch
is not used.
"Ponding" in unit could be
"Ponding" of water
indicative of clogging due
Stormwater should drain
Recommend contact
Mulch Cover
on mulch cover.
to excessive fine sediment
freely and evenly through
manufacturer and replace mulch
accumulation or spill of
mulch cover.
as a minimum.
petroleum oils.
Soil/mulch too wet, evidence of
Vegetation
Plants not growing
spill. Incorrect plant selection.
Plants should be healthy and
Contact manufacturer for advice.
or in poor condition.
Pest infestation. Vandalism to
pest free.
plants.
Plant growth
Plants should be appropriate
Trim/prune plants in accordance
Vegetation
to the species and location of
with typical landscaping and
excessive.
Filterra.
safety needs.
Maintenance is ideally to be performed twice annually.
Filterra Inspection & Maintenance Log
Filterra System Size/Model: Location:
Date
1/1/17
Mulch & Debris
Removed
5 — 5 gal Buckets
Depth of Mulch
A..-.
3"
Mulch
Brand
Lowe's
Premium
Brown Mulch
Vegetation
Species
Galaxy
Magnolia
Issues with
- Standing water in
downstream structure
Comments
Removed blockage in downstream
structure
10 www.ContechES.com/filterra 1 800-338-1122