1. Operation and Maintenance
Manual for the Capture Green
SFT WRC-C1 Water Remedial
Process System
PREVENTION FOR CREOSOTE
MIGRATION
Contact: Service Team
Tel: +44 (0) 1206 299465
Email: servicing@capturegreen.com

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Contents
About Capture Green 3
SFT WRC-C1 remedial system 3
1. The SFT WRC-C1 Water Remedial Process System 4
What is it? 4
What does it do? 4
2. Location and labelling 6
a. Installation 6
b. Labelling 6
3. Health and safety considerations 7
Pre-Installation considerations 7
During servicing and maintenance 8
5. Isolation of fluids in and out of the system 10
6. Installation requirements 11
a. Location 11
b. Preparing the chamber for the WRC-C1 12
c. Preparing the Ground 12
d. Pipe Connections 12
e. Installing the WRC-C1 13
f. Completed system 13
7. Routine servicing and maintenance 14
8. Introduction to oil water separation 15
How do oil separators work? 15
Where are separators needed? 15
9. The Capture Green water remediation process 16
10. Summary 17
Version Implemented by Revision Date Approved by Approval Date Reason
1 RW 10/10 RA 11/10 N/A

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About Capture Green
Capture Green Limited offers consultation, design, manufacturing and turnkey
installation of pollution prevention systems. It has also developed a range of
consumable pollution control products.
Capture Green has a number of pollution prevention systems, designed for the
electrical utilities market that are manufactured in house in the UK. “We pride
ourselves on being different and taking a totally fresh approach to finding alternative
innovative solutions that offer a multitude of efficiency savings across the duration of
a project”. The Capture Green pollution prevention systems have been developed for
the electrical utilities sector by professionals from the industry looking for smarter ways
to deal with the persistent challenge of preventing pollutants migrating from
substations and operational depots. Capture Green has worked to develop solutions
in collaboration with its customers and then has scaled these innovations out to the
rest of the market.
Capture Green is engaged with the design, manufacture and installation of large
pollution containment projects. It works as a contractor and supplier to major
construction and utilities companies giving it an excellent insight to the daily site
challenges that are experienced throughout the industry.
This first-hand experience, in-house manufacturing experience and innovative
technology gives Capture Green a significant advantage over the competition, placing
it firmly in amongst the industry to lead with innovation, service and quality products,
that offer a multitude of efficiency savings
SFT WRC-C1 remedial system
The SFT WRC-C1 remedial system is designed to be used as an alternative to traditional oil
water separators. The system relies on a proprietary smart filtration technology that ensures
no hydrocarbon contaminates are able to enter the environment. The system has no
mechanical parts and doesn’t rely on electricity or balancing processes that are commonly
used to separate contaminates. This is important as not all constituents of creosote can be
captured in this manner.

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1. The SFT WRC-C1 Water
Remedial Process System
What is it?
Capture Green has developed a remedial system that can be fitted to sites that
potentially risk discharging contaminated surface water into the environment. The SFT
WRC-C1 is for removing hydrocarbons and contaminates typically found in creosote.
The system utilises a number of proprietary filters for removing polluting compounds
found in EU specification creosote, these contaminates include hydrocarbons, phenols
and cresols. The WRC-C1 remedial system allows surface water to be processed at
up to 300 litres per minute whilst removing contaminates to acceptable levels prior to
discharge.
The standard chamber system measures 1670mm (H) x 860mm (W) x 605mm (L). It
has a weir based design within and features a variety of smart filtration media that can
be alternated depending on the pollution challenge.
The system is used to prevent transformer fluid, creosote or other hydrocarbon
pollutants from entering the environment, whilst allowing water to drain unimpeded.
The standard WRC system will allow water to flow at 300 litres per minute retaining up
to 35 litres of hydrocarbon before automatically shutting of all flow from the device.
What does it do?
The SFT WRC-C1 remedial system is designed to be used to capture contaminants
that are found in surface water that is discharged from secondary containment or
drainage systems. The system can be used in place of or to complement existing oil
water separation systems where it is essential to mitigate pollutants from entering the
environment.
The product has a versatile design and is made by Capture Green specifically to
operate and function in industrial site environments. The systems are built to operate
to Class 1 (full retention) oil water separator guidelines. The system is a sealed unit

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that can be used in high risk flood areas and can be installed into new or retrofitted to
existing sites.
“Class 1 separators are designed to achieve a discharge concentration of less than 5
mg/litre of oil under standard test conditions. These separators are required for
discharges to surface water drains and the water environment.” (Environment
Agency pollution prevention guidelines PPG3 April 2006)
A full retention separator is used where there is a risk of regular contamination with oil
and a foreseeable risk of significant spillages. The SFT WRC-C1 remedial system has
been designed to treat the full flow that can be delivered by the drainage system. The
‘full flow’ is normally equivalent to the flow generated by a rainfall intensity of
65mm/hour.
The systems utilise hydrocarbon and sediment filters called SFT HRF-80. Capture
Green SFT HRF-80 hydrocarbon and sediment filters have been proven to discharge
water with less than 0.1 ppm of oil concentration. Unlike traditional oil water
separators, the SFT WRC-C1 remediation system also targets emulsified, dilute and
dissolved phased hydrocarbons. Its design also ensuring that it is unaffected by
flooding and flash flooding. Phenols and Creosols (the carcinogenic element of
creosote) are captured within carefully selected activated carbon filters. Finally,
processed water is passed through a biological chamber where enzymes are utilised
to break down dilute contaminates.
As part of the design process for each site Capture Green will need to consider the
flow rates of potential spillages delivered to the separator from the drainage system
and the oil storage requirements of the system.
On larger sites, Capture Green recommends a retention area upstream of the SFT
WRC-C1 remediation system as an acceptable means of limiting flow rate and the size
of the separator needed.

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2. Location and labelling
a. Installation
Any clean water should be discharged downstream of the separator. If any clean
water is to be drained through your separator, you will need to consult with Capture
Green, so the additional volume of water can be considered.
If the discharge for the separator is subject to the controls of a permit to discharge
granted by the Environment Agency, a purge valve or chamber will be required
downstream of the separator, to allow an Environment Agency representative to take
samples if required.
Capture Green can design an inspection chamber and lid to protect the SFT WRC-
C1 remedial system. This will give the system safe access points to allow for
inspection and cleaning of the SFT WRC-C1 remedial system. Keep access to the
separator clear at all times and do not use the area for storage.
b. Labelling
Capture Green provide the SFT WRC-C1 remedial system with a visible and durable
label that will be able to be read once the system has been installed. The label
contains the following information:
- Capture Green reference number and year of manufacture
- type of separator
- class of separator
- unique identifier for the design of the separator (name and number)
- nominal size
- oil storage capacity
- volume of separator
- silt storage capacity
- oil level warning device details
- depth of oil storage
- closure device details
Capture Green recommends that the position of the SFT WRC-C1 remedial system
is clearly marked on site drainage plans, it should also be identified on the ground by
a marking on the manhole cover ‘separator’. For all systems installed by Capture
Green, a set of ‘as built’ drawings are submitted on completion of the project.

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3. Health and safety
considerations
Pre-Installation considerations
Capture Green supply the SFT WRC-C1 Water Remedial Process System as a
sealed unit that has an inlet and outlet set at predefined locations. Under normal
circumstances The SFT WRC-C1 Water Remedial Process System operates under
gravitational pressures and is therefore installed at either the outfall of an
underground drainage system or as an inline processing unit installed on an existing
drainage system. This means that a number of health and safety risk management
processes need to be considered.
The SFT WRC-C1 Water Remedial Process System is delivered to site band
strapped to a pallet. The system will require mechanical means to remove it from the
transportation vehicle, either by fork lift or with the supplied strops. (DO NOT STROP
FROM THE PERIMETER FLANGE UTILISED FOR FASTENING THE WATER
TIGHT LID). Capture Green provide the SFT WRC-C1 Water Remedial Process
System with a pair of strops located between the base of the system and the top of
the transportation pallet.
Once an undergrounding housing chamber and drainage infrastructure have been
prepared and established The SFT WRC-C1 Water Remedial Process System can
be lifted into position utilising supplied and fitted strops, with pallet removed.
The weight and dimensions of the SFT WRC-C1 Water Remedial Process System
are:
Measurements: 1670mm (H) x 860mm (W) x 605mm (D).
Weight without filters installed: 75 kg
Weight with filters installed: 113.80 kg
Lifting operations should only be undertaken by trained, competent personnel.
PPE requirements pertinent to the lift process should be observed

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During servicing and maintenance
The SFT WRC-C1 Water Remedial Process System must be installed within an
inspection chamber this should be considered as confined space and any work
undertaken should be undertaken in conjunction with confined space procedures.
Once the inspection chamber has been accessed the SFT WRC-C1 Water Remedial
Process System should immediately be isolated of fluids (see section ‘isolation of
fluids in and out of system’) this is to prevent potential flooding of the chamber. The
lid of the SFT WRC-C1 Water Remedial Process System is clear to observe the
internal workings of the system. If water in the system is level with the top of the lid,
this could indicate that filters have either isolated an incident or that the system has
been insufficiently maintained. If water in the system is level with the lid, take extra
care when releasing the lid as there could be a potential build-up of contaminates.
Minimise exposure to these contaminates, by wearing suitable personal protective
equipment that should include but is not limited to.
- Chemical resistant safety boot (type EN 13823-3 with EN15090 Part 3)
- Chemical resistant gloves (type PVC/Nitrile EN 388 (3.1.2.1))
- Chemical resistant coveralls. (type EN 14126, EN 1073, EN 1149, EN 14605,
EN 13982, EN 13034)
- Splash resistant chemical resistant goggles (type EN 166 1BT 39 CE)
- Chemical mask (type EN 14387: 2004 ABEK1Hg-P3RD. Half mask: EN140:
1998)
The water tight lid is held in place utilising 53 hex head recess bolts. These should
be removed utilising mechanical means (power ratchet or similar)
Polymers utilised within the SFT WRC-C1 remedial system increase the flash point
of flammable liquids thus reducing the chance of ignition. Capture Green still advise
the slow release of the sealed lid, with a gas monitor kept close with the chamber
during the removal of the lid.

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Once all bolts have been removed, the lid of the system should be lifted from the
chamber. The lid stats are
Measurements: 1670mm (H) x 860mm (W) x 10mm (D).
Weight: 17.1 kg
The size and weight of the lid make the removal a two-person manual lift process
All consumable filtration products (identified within the routine servicing and
maintenance schedule) should be carefully removed and placed in hazardous waste
bags. These should be sealed and disposed of in accordance with hazardous waste
procedures.
Polymer and activated carbon filters when saturated could weigh up to 20Kgs and
could therefore pose a manual handling risk. Care should be taken when removing
and reinstalling both polymer and activated carbon filters.
The system should be cleaned and contaminated water discharged from the system
utilising a Green Rhino Dewatering Pack. It is essential that contaminates are
contained during this process.
The system should now be reassembled heeding the risk management processes
outlined within this section

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5. Isolation of fluids in and out
of the system
When entering an inspection chamber where a SFT WRC-C1 Water Remedial
Process System is installed, it is important that the flow of fluids into the system are
isolated. This is to ensure that liquids are unable to enter the system (to ease the
service and maintenance process). The system is also isolated to minimise the
possible chances of flooding, entrapment or even drowning whilst an operative(s)
is/are working in or around the underground chamber.
When entering a SFT WRC-C1
Water Remedial Process
System inspection chamber
please observe the following
instruction – The valve should
be in the open position during
operational use and in the
closed position during
maintenance or when
personnel enter the inspection
chamber area.

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6. Installation requirements
Most SFT WRC-C1 Water Remedial Process Systems designs are bespoke, as
each site generally requires a slightly different input/output configuration. It is highly
recommended that the installation of the SFT WRC-C1 Water Remedial Process
System should be carried out under the direct supervision of Capture Green or under
remote guidance (Capture Green also offers a full turn-key installation service).
Failure to carry out the installation of the SFT WRC-C1 Water Remedial Process
System in accordance with Capture Green recommendations could invalidate the
product warranty and could increase the risk of an environmental incident on site.
When prescribing or designing a SFT WRC-C1 Water Remedial Process System,
Capture Green needs to gain a thorough understanding of:
- The size of the containment area that the system is to service
- The type of contaminates likely to arising within the containment area
- The quantity of contaminates likely to arise with the containment area
- Location of the system and desired fit within the existing or new infrastructure
- Inspection housing and lid (proposed traffic will have impact on that chosen)
- Service and maintenance SLA requirements
Failure to disclose all of the relevant information can impact Capture Greens ability
to help prescribe the most appropriate Smart Filtration Product (SFT).
a. Location
The WRC-C1 must be installed below ground (if reliant on gravity) and as close as
possible to a source of surface water run-off. Make sure that the chosen location is
easily accessed for installation, service and maintenance.

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b. Preparing the chamber for the WRC-C1
Capture Green recommends utilising a composite interlocking chamber due to the
ease of use and time to install. These are selected depending on the location of the
systems being installed. Equally traditional concrete chambers can be constructed.
When the separator location has been determined, the area should be excavated to
a width to provide side clearance and correct depth for the base slab. Internal
measurements should be no less than 2500mm x 1500mm.
c. Preparing the Ground
A concrete slab with a 300mm sump
needs to be formed. The specification for
the concrete needs to be appropriate to
contain the weight of the WRC-C1 with a
full liquid capacity.
d. Pipe Connections
Prior consideration to drainage point is important. The WRC can be fitted to an in-
line drainage system or to a drainage system where an outlet is variable. This will
need to be defined at the design phase and before the WRC is manufactured by
Capture Green. Standard 110mm drainage pipe is used by Capture Green to create
inlet and outlet configurations accordingly

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e. Installing the WRC-C1
The SFT WRC-C1 Water Remedial Process System is delivered to site band
strapped to a pallet. The system will require mechanical means to remove it from the
transportation vehicle, either by fork lift or with the supplied strops. (DO NOT STROP
FROM THE PERIMETER FLANGE UTILISED FOR FASTENING THE WATER
TIGHT LID). Capture Green provide the SFT WRC-C1 Water Remedial Process
System with a pair of strops located between the base of the system and the top of
the transportation pallet. Once the chamber is fully prepared, lower the WRC-C1 into
the chamber taking consideration to pipe connection locations.
f. Completed system

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7. Routine servicing and
maintenance
Capture Green supply a 12-month warranty on a SFT WRC-C1 Water Remedial
Process System, that is activated on a signed receipt of goods. The 12-month
system warranty can be extended under certain circumstances, for example if a
service level agreement (SLA) is taken out with Capture Green for servicing and
maintenance.
To prevent pollution and minimise your costs, you need to manage your separator
effectively. To make this easy, all parts of the separator that have to be regularly
maintained have been made easily accessible.
Every six months, experienced personnel should:
- Physically inspect the integrity of the system
- Assess the levels of accumulated oils and silts in the primary chambers
- Service all electrical equipment such as telemetry equipment (if fitted)
- Check the condition and flow of polymer and activated carbon filters
Some heavily used or high-risk sites might require more frequent inspections
Capture Green WRC-C1 Serviceable Items

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8. Introduction to oil water
separation
How do oil separators work?
Oil separators can be fitted to surface water drainage systems to protect the
environment from pollution by oils. They separate the oil from the water, and then
retain the oil safely until it is removed. They are installed to contain oil leaks from
stored oil, oil filled equipment, oil impregnated timbers, vehicles, plant and accidental
spillages. To be effective, oil separators need to be correctly designed, installed and
maintained.
Where are separators needed?
Surface water may be contaminated by oil at a number of different sites. These sites
need to have measures in place to prevent this oil from polluting the environment.
These sites include:
- electrical utility sites where oil filled equipment is utilised
- rail networks where oil filled equipment is utilised
- storage areas for oil impregnated timber
- car parks typically larger than 800m2 in area or for 50 or more car parking
spaces
- smaller car parks discharging to a sensitive environment
- areas where goods vehicles are parked or manoeuvred
- vehicle maintenance areas
- roads
- industrial sites where oil is stored or used
- refuelling facilities
any other site with a risk of oil contamination

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9. The Capture Green water
remediation process
Capture Green utilise a number pioneering processes within its WRC-C1 to remove pollutants from contaminated
surface water to within regulatory levels, before discharging. The process starts by removing debris and
suspended solids from contaminate, it then removes hydrocarbons to non-detectable levels via a process call
solidification. The WRC-C1 then targets contaminates that dissolve into water within carefully selected activated
carbons and an enzyme rich biological chamber. See the WRC-C1 side and plan detail below
ACTIVATED CARBON FILTERS
ENZYME BED
WRC-C1
(SIDE VIEW)
WRC-C1
(PLAN VIEW)
110MM SURFACE
WATER INLET
110MM SURFACE
WATER OUTLET
110MM ISOLATION
VALVE

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10. Summary
Electricity distribution network operators and telecoms companies utilise high volumes of creosote impregnated
distribution poles during day‐to‐day operations. Distribution poles are installed during planned capital works
programs, repair and maintenance, and emergency works. The high volume of planned and reactive installations
means that companies need to store creosote impregnated timber distribution poles at strategic geographical
locations across their networks.
Capture Green can offer a fully installed containment system capable of storing a specified number and type of
distribution pole. The Capture Green Pole Storage Containment System includes a facility to remediate storm
water of hydrocarbons and compounds typically found in creosote before allowing accumulating water to flow
from a pre-formed retention area. The Capture Green WRC-C1 has the capacity to shut down preventing a
containment area from discharging. This process occurs when the filters become overwhelmed or overloaded
and where there is a risk of hydrocarbons entering the environment. The system has been designed to process
accumulating contaminates on a residual level and under normal conditions the filters should operate efficiently
for between 18 and 24 months. *
A 6-month inspection is required after the commissioning date of any Capture Green Remedial Chamber in line
with Environment Agency PPG3 guidelines.
The completed installation will provide compliant storage of creosote impregnated timber on site in line with
Environment Agency PPG5 guidelines. The system will also ensure that Capture Green clients meet ISO14001
audit criteria for the compliant storage of creosote impregnated timber.
*Subject to a maintenance schedule
Office: +44 (0) 1206 299388
Email: servicing@capturegreen.com