KELTBRAY ENVIRONMENTAL SERVICES CAPABILITIES OVERVIEW | 2021
Innovation in Engineering
Keltbray is a specialist engineering and construction solutions company Our purpose is to redefine the way sustainable development is delivered. We self-deliver innovative customer solutions across targeted built environment and infrastructure sectors to support economic growth, social advancement and environmental protection.
Contents
OVERVIEW 2 Company overview Our services and sectors
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KELTBRAY'S ENVIRONMENTAL SERVICES
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Introduction 8 Our unique approach 10 Permitting and waste regulations 12 OUR INTEGRATED DELIVERY SERVICES
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Industrial decommissioning Site remediation Soil and construction waste management Asbestos and hazardous waste management
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OUR PROJECT PORTFOLIO
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SUSTAINABILITY FRAMEWORK
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Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Company overview Overview WHO WE ARE
Focusing our integrated services on solving customers’ challenges in a rapidly changing world
Keltbray is a UK-leading specialist engineering and construction business, offering a range of self-delivered solutions for blue-chip public and private sector customers.
WHAT WE DO Operating in highly regulated sectors, we are a key player in developing and maintaining Britain’s economic infrastructure and built environment, and in selective overseas markets. Our customers trust us to deliver certainty on their projects – to specification, safely, on programme, within budget and with care for the environment and the communities that host us. Our integrated delivery approach is underpinned by the significant investments we are making in the development of our people, our specialist delivery capabilities and our research and development agenda. It focuses our business on engineering innovation and delivery excellence to provide greater value for all our stakeholders.
WHY WE DO IT Our purpose is to redefine the way sustainable development is delivered. Our deep expertise means that we offer standalone and holistic services, to meet our clients’ complex and changing engineering demands to enhance, upgrade and decarbonise their capital assets.
HOW WE DO IT Keltbray’s distinctive delivery model is based around a set of complementary capabilities that together constitute the way we go to work to deliver certainty through the smart solutions we provide for our clients.
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Keltbray Holdings Limited Environmental Services capabilities overview | 2021
Our progressive approach seeks to break down the barriers to success inherent in traditional contracting models. Clients need to feel confident entrusting their investments with a delivery partner capable of turning vision into reality. They need to be certain the endresult will meet their expectations – and will be completed to the agreed programme, budget and specifications. We believe that our unique delivery model has the potential to address these challenges – and the key to unlocking its benefits lies in deep and trusting client relationships that allow us to engage early on projects as a prerequisite to delivering greater value. It is only when clients and delivery partners – along with designers and others with vested interests – collaborate from the outset, as part of an integrated team, that opportunities for innovation in engineering can be fully exploited.
Our distinctive 'one keltbray' approach
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Future-proofed digital technologies, processes and equipment
INNOVATIVE ENGINEERING EXCELLENCE
Integrated self-delivery capabilities
INTEGRATED SELFDELIVERY CAPABILITY
Delivery Certainty Talented people
Inherent in the way we go to work is a different kind of client / delivery partner relationship management approach – one based on establishing and maintaining longterm strategic relationships where both parties’ interests are aligned to deliver mutual benefit.
We work collaboratively with our clients, supply chain and industry partners to de-risk project delivery and value engineer solutions with a high degree of outcome certainty. Our multi-disciplined network of professional engineers can design, contract and supervise sustainable, high performance engineering and construction services in the public and private sectors.
Innovative engineering excellence
Strategic customer relationship management
STRATEGIC CUSTOMER RELATIONSHIP MANAGEMENT
Financial resilience
By drawing on our specialist in-house delivery businesses and directly employed workforce, we have greater control over quality and productivity. It enables us to be more responsive, solve problems, rectify issues and interface clashes quicker and achieve greater integration across the project phases. This brings an operational focus and intensity to project delivery that is very different to the traditional subcontracting model.
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Our services and sectors From its formative years as a demolition and environmental remediation contractor, Keltbray has extended its coverage across the client value chain. Today we offer a diversified portfolio of specialist engineering and construction services through our Built Environment and Infrastructure businesses, as we drive our diversification into new growth sectors and customer revenue streams.
Specialist engineering and environmental services – Demolition – Civil engineering – Environment – Contaminated soil / ground water – Asbestos removal – Site remediation – Decommissioning
Construction services – Engineering design – Wentworth House Partnership – Piling – Structures – Transport piling – Transport structures
Infrastructure services – Rail systems design – Wentworth House Rail Systems – Rail engineering and civils – Rail overhead line electrification and distribution – Power distribution and transmission – Renewables
Support services – Preconstruction and commercial management – BIM & digital engineering – Civil engineering plant, lifting and haulage equipment – Project delivery support services: – Recruitment – Operational safety training – Occupational health and wellbeing
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Keltbray Holdings Limited Environmental Services capabilities overview | 2021
WHAT DIFFERENTIATES KELTBRAY
Sources of competitive advantage The unique combination of highly experienced teams; innovative self-delivery capabilities; financial resilience; strong, enduring partnerships and our ‘can do’ reputation across all elements of our business are what we believe sets us apart from our industry peers
Specialist engineering and environmental services
Construction services
Integrated self-delivery
Support services
Infrastructure services
Customer sectors
Building
Energy
Rail
Transport
• Residential / Commercial • Manufacturing • Industrial
• Civil / Nuclear • Power Networks • Renewables
• UK Network • Mass Transit • High Speed 2
• Highways • Aviation • Marine
Government Utilities Infrastructure • Communications • Defence • Health
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Keltbray's Environmental Services
Welcome to Keltbray's Environmental Services 6
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
Keltbray is the UK’s leading specialist environmental services integrator, through its proactive relationship management approach with customer teams, supply chain partners and regulatory bodies. This promotes early dialogue and proactive design evaluation, facilitating effective communication and identifying key project risks with defined delivery requirements. Our detailed understanding of environmental issues and the effectiveness of our innovative environmental engineering solutions enables the most complex and technically challenging projects to be delivered to our customers’ and the attending regulatory authorities’ specification standards. Tim Bowen Managing Director, Environmental Services
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Introduction
The Keltbray Group’s purpose is to redefine the way sustainable development is delivered. Our Environmental Services play a fundamental role in this regard, through the comprehensive coverage of all Geotechnical and Ground Engineering phases of complex building and infrastructure projects.
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Keltbray Holdings Limited Environmental Services capabilities overview | 2021
Through close collaboration with our customers and the supply chain, we are continually seeking innovative ways to mitigate environmental impacts and decarbonise the built environment and infrastructure assets for future generations. Our specialist environmental services team brings a wealth of technical knowledge and practical experience gathered over many years in contaminated land, industrial and commercial waste management, and complex remediation and decommissioning of heavy industrial capital assets. We understand environmental projects can be complex, carry risk, whether environmental, contractual or financial and can be stressful for stakeholders involved in the project. We offer practical, innovative, and cost-effective solutions for customers looking for reassurance from experts that deliver decommissioning and remediation projects of all sizes and complexities. Recognising that each project has differing engineering needs and utilising our experience, knowledge, technical ability and meticulous approach, we gain the best result for customers, regulators and the community.
HOW WE CAN HELP Our comprehensive services manage all aspects of environmental management from the initial feasibility study through to final site handover. These include: – Complex site remediation – Soil: contaminated land treatment, bioremediation, soil washing, stabilisation and treatment – Groundwater: risk assessments and protection solutions – Onsite analysis – Waste soil and construction material management – Soil treatment – Asbestos survey and management – Hazard management – Heavy industrial, petrochemical and energy asset decommissioning – Industrial waste management – Site enabling works
HOW WE CREATE CUSTOMER VALUE Our environmental solutions address: – Reviewing the conceptual site model to identify the complete pollutant linkages – Assessing which environmental management techniques will achieve the target levels for the site – Completing a cost and sustainability analysis for each technique – Assessing the environmental impact from the potential techniques – Detailed design and delivery of the agreed environmental strategy, ensuring regulatory endorsements and approvals without compromising on agreed project outcomes
With so many techniques available today, choosing the most sustainable and economical treatment method can be difficult. Several factors contribute to the choice of the right environmental solution strategy, and we draw on our extensive experience of the industry to complete detailed options appraisals and make sure the correct technical approach is selected.
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Our unique approach Successful environmental management fully integrates understanding the technical issues in hand, critically assessing the options available and completing the works on site effectively. This is achieved through application of our ‘3-D’ delivery approach.
Define
1 Fully comprehend the issues on site and align with our customers’ requirements and aspirations. The Keltbray capability offers the best possible solution on a ‘whole project’ basis through its unique contractor-led insight to mitigate interface risks and potential issues for follow-on trades. Technical appraisal: – – – –
Regulatory liaison Commercial review and analysis Data gap analysis Preconstruction Services Agreement [PCSA] design/ delivery programme – Permitting requirements – Waste Regulations compliance requirements
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Design
2 Keltbray can provide its own detailed environmental solutions strategy, adopt and appraise a customer’s strategy, or offer value-engineering alternatives to an existing design. We will challenge assumptions and always seek to ensure we do not ‘over-environmentally manage’ the customer requirements or set unrealistic targets. Our mission is to ensure that achievable, robust, and meaningful project goals are set, which align fully with the stakeholders’ goals in a nonadversarial manner. Technical appraisal: – Heavy Industry Decommissioning – Complex site remediation – Soil stabilisation – Asbestos removal and treatment – Bioremediation – Water treatment – Material management – Off-site soil treatment – Permitting – Validation – Discharge planning conditions
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
Deliver
3 Keltbray’s reputation is built on delivering certainty for our customers. As preferred delivery partner, we are motivated to engage for the long term - by building enduring, mutually beneficial relationships that create sustainable value. Our record of accomplishment is founded on our ‘can-do’ attitude that permeates throughout our entire business. To be successful, we recognise the importance of safe systems of working that assure industry leading regulatory compliance. We are enthusiastic problem solvers and adopt a self-delivery model that is unique in the industry. We use our own plant and technologies, employ and develop our own professional technicians, and can draw upon the vast Group resources to ensure we deliver for our customers on time, every time. – Engage/liaise with regulators and client team consultants – Site investigation – Environmental options appraisal – Undertake Detailed Quantitative Risk Assessments (DQRS) – Define environmental targets – Ground modelling – Phasing plans – Waste classification
An end-to-end solution Keltbray’s deep understanding of the end-to-end construction process and focus on quality and certainty through its extensive self–delivery capabilities means it can progress a site remediation or decommissioning project into the next stages of construction for the customer. Specialist engineering and construction services including onward enabling and structural works covering earthworks, basement construction, piling and structural concrete frames can be mobilised, ensuring a seamless interface with the project programme , to ensure the customer’s goals and objectives for the project are not compromised. This approach can deliver significant value beyond the initial works, maintaining best practices and lessons learned processes.
ENGINEERING IN QUALITY Our approach to quality control is based on the principles outlined in our Integrated Business Quality Management System – The Keltbray Way:
Safety by design By collaborating with customers at the earliest possible stage of a project, we have a much greater impact on health and safety by identifying, planning for and eliminating risk wherever possible. We work with our customers to design and integrate safety controls during the planning phase of our projects, with the aim of minimising or completely eliminating risk on our sites. We embrace a ‘Safety by Design’ philosophy and recognise that through early planning, we stand to have a much greater control of project outcomes.
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Quality Policy, aims and objectives Management arrangements for quality Quality documentation Quality planning Roles and responsibilities Resource management Service delivery Measurement analysis and improvement
Plans of Work are produced detailing what actions are to be undertaken, to what standard and within which inspection and quality control sign-off and authorisation framework. Site documentation includes reporting mechanisms and records of conformity and inspection status. The foundation of our BSEN ISO 9000 quality management system is the process of performance measurement and continuous improvement.
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Permitting and waste regulations In the UK, any business that produces, handles, or disposes of controlled waste has a statutory obligation to ensure it is managed correctly under Duty of Care legislation and waste regulations. This applies to anyone who imports, produces, carries, keeps, treats, disposes of, or is a dealer or broker that has control of controlled waste.
At Keltbray, we understand that the management and responsibility for waste production is critical to the success of a project. Managing the removal of inert, non-hazardous and hazardous waste, Keltbray champion Waste Regulations (2011), including waste classification through the utilisation of WM3. Furthermore, our in-house haulage division and off-site treatment facilities mean we can provide a joined up supply chain, ensuring compliance and transparency from project inception right through to contractual completion and handover. We are also adept in managing the procurement of environmental permits, licenses, and consents, and have a track record of ensuring expeditious delivery even under the most demanding project timescales. Having a clear appreciation of the regulator’s position means we not only present our submissions in a way that makes it easier for regulators to assess their implications quickly and efficiently, but also helps to ensure compliance at all stages of the delivery process. Keltbray encourages early stakeholder engagement which, depending on the nature of the works, can be either largely customer-led, or autonomously owned by Keltbray. This may involve liaising with various national regulators such as the environment agency, local authorities or privately owned entities.
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Keltbray Holdings Limited Environmental Services capabilities overview | 2021
Keltbray’s in house expertise:
40 Keltbray in-house environmental specialists, including: – – – –
Environmental scientists Soil chemists Remediation technicians Chartered environmental and waste professionals – CL:AIRE DoW: CoP qualified persons
Keltbray’s Environmental Accreditations and Industry Standards:
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Our integrated delivery services 14
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Industrial decommissioning Keltbray Decommissioning is an industry leader in its field, providing smart engineering solutions to industrial decommissioning projects throughout the UK. We are accredited and highly regulated specialists in the decommissioning of Petrochemical, Pharmaceutical, Energy, Nuclear and Heavy Industry capital assets that have reached the end of their operational lives.
Our decommissioning team ensures we execute projects to the highest safety, health and environmental standards and programme, cost and quality. Keltbray provides specialist expertise from the earliest engagement phases of a decommissioning project covering the period from the initial plant closure to onsite mobilisation. During this stage of the project, characterisation surveys are used to identify the location and quantum of potentially hazardous materials, plants to be cleaned and de-energised, and value engineering opportunities to maximise the return from saleable assets. Keltbray offers a full range of technical and engineering services: First, we will undertake a site visit to enable development and submission of a fully compliant technical and commercial proposal. Once agreed, we carry out the project based on our 3-D delivery approach
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Keltbray Holdings Limited Environmental Services capabilities overview | 2021
PHASE 1: DEFINE
PHASE 2: DESIGN
Defining and planning, where we offer the following: – Characterisation of potential hazards and contaminants throughout the structures and processes – Risk assessments and the creation of a risk management plan that is flexible and can be modified in line with the changing environment – Solution design – Survey work and production of a report that contains an updated hazard risk matrix, which will remain as a live document throughout the project – Construction design and management, whereby our experts will run the site and pass information between subcontractors, the project team and other stakeholders involved – Budgeting assistance – Bespoke deconstruction strategies
Designing and carrying out the decontamination approach, where we provide all environmental, contamination (radiological, asbestos, chemotoxic and biological) and safety case documentation We also define waste routes and provide all contaminated waste management documentation, ensuring confirmation of discharge licenses and routes. We then make sure all contamination and environmental monitoring processes are in place and provide contamination advice, as necessary. Designs of ventilation/containment systems and enabling works may also be relevant in some projects.
PHASE 3: DELIVER
Delivering the plant’s dismantling, decommissioning and site clearance tasks, including the licensed removal and disposal of all waste This is usually done in a live site environment, where minimal disruption is key. Our service gives you access to the competence, skills and experience of an industry-leading decommissioning service. We can also draw on the skills of our in-house support services and specialist supply chain capabilities in areas like high pressure jetting, chemical cleaning, and treatment plants, and can offer access to our disposal outlets. Additionally, we ensure all of your waste is managed in accordance with the waste hierarchy, and our experienced project managers focus on top-tier recovery and the reuse of materials, wherever possible. These activities result in recycling rates on Keltbray projects in excess of 99%, which help minimise waste and maximise the value of the decommissioned assets.
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Site remediation Keltbray specialises in the onsite remediation of contaminated ground, water, and soils, utilising both in situ and ex situ techniques. Offering a range of treatment solutions, our priority is to deliver compliant and sustainably remediated sites with full regulatory approval, suitable for end-use requirements. – To safely and sustainably deliver pragmatic, robust, and cost effective solutions for our customers across a broad range of sectors throughout the UK – To treat all stakeholders with respect, prioritising the well-being of our people, project, and customer teams, and the communities we work in
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Keltbray Holdings Limited Environmental Services capabilities overview | 2021
Our detailed understanding of contaminated land and the effectiveness of our remedial solutions enables the most complex and technically challenging projects to be delivered to our customers’ and regulatory authority’s specification. At Keltbray, we are solutions driven and always adopt the best value-based engineering strategies, utilising innovative thinking and modern methods of delivery. We do not have affiliations with any particular technique or technology, which allows us to be flexible and tailor all our solutions to meet the specific needs of the project conditions. Keltbray has more than 40 highly qualified industry specialists, with a collective technical knowledge base in environmental and chemical consultancy to rival any UK competitor. Our people have a wealth of experience working in a number of different environments, including gas works, rail, petrochemical, industrial, and challenging inner city sites. We operate our own Soil Treatment Facility (STF) and Materials Transfer Station under a Mobile Treatment Permit (MTP). As holders of an MTP, we can utilise a wide range of techniques to ensure we deliver the most effective solution. Depending on the Contaminant of Concern (CoC), standalone or bespoke treatment solutions can be designed and built in house.
REMEDIATION SOLUTIONS INCLUDE: – General Materials Management – Bioremediation - in situ and ex situ (windows, biopiles, in-vessel bioreactors) – Chemical treatment (including oxidation, dehalogenation) – Water treatment – Asbestos in soils – Soil vapour extraction (including steam injection) – Soil washing – Off-site soil treatment – Stabilisation and Solidification – Thermal treatment (including thermal desorption and steam injection) – Treatment plant for complex sorting – Air sparging – Biosparging and bioventing We can deploy our MTP on any site where there is a requirement for treatment, subject to the EA being satisfied that the activities have considered the impact on the surrounding environment. During our works, we maintain regular on-going dialogue with the EA to help ensure compliance during all stages of the project lifecycle. We draw on our broad range of specialist services across the Keltbray Group, enabling a holistic project view with complementary divisional capabilities to manage multiple work packages for our customers. This allows sequencing and productivity efficiencies to deliver a more advantageous programme and drive commercial savings through value engineering. Keltbray is well placed to meet any associated challenge along the way, as a forward-thinking company. This mentality and core capability sets Keltbray apart from the competition, managing all aspects of the development process from initial design to onsite delivery, practical completion including regulatory sign-off and handover to follow-on contractors.
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Soil and construction waste management Keltbray’s contaminated soil and construction waste management services implement the treatment of contaminated materials from brownfield and redevelopment sites, which are then transformed into materials that are suitable for use in restoration projects and new landforms. Specialising in off-site treatment and recovery of construction, demolition and excavation wastes, and operating from strategic locations across the UK, our soil treatment facilities provide a sustainable option for contaminated soils through diverting waste from landfill: – To deliver an innovative waste solution which demonstrates best value for money – To offer a waste service that fulfils defined levels of quality, fostering innovation, managing quality and performance for waste generation – To achieve a pathway to Zero Waste where possible for all waste materials collected
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Keltbray Holdings Limited Environmental Services capabilities overview | 2021
We have the unique ability to utilise both road and river transport due to our strategic investment in wharf sites along the River Thames. Moving materials by barge has multiple benefits over road tipper haulage including reducing carbon emissions, easing congestion on city roads and increasing movement capability. These ISO accredited sites can receive and service waste from a wide range of land remediation, construction and demolition/ decommissioning projects across the UK and manage in excess of 800,000 tonnes of contaminated soils each year. Soils are processed and cleansed using advanced technologies to treat a wide range of contaminants and pollutants. This allows us to maximise the reuse of materials. Contaminant residues are analysed and disposed of safely, compliantly and in accordance with environmental guidelines and legislation. Keltbray is able to draw on the valuable in-house resources of the wider group, including specialist haulage and remediation capabilities. This allows access to additional technical and logistical expertise when required, which significantly increases our ability to complete complex projects sustainably and on schedule.
MATERIALS ANALYSIS AND TREATMENT We have dedicated chemists with expert knowledge and experience of sampling and testing Construction, Demolition and Excavation (CDE) wastes. We are able to offer waste classification and analysis through site visits and sample collection. As a result of our long-standing relationship with one of the UK’s leading fully accredited laboratories, we offer waste classification and analysis, along with site visits and sample collection.
MATERIALS TREATMENT Our bespoke permits ensure that we can accept hazardous and nonhazardous materials with a wide range of contaminants. Using physical and biochemical treatment, we remove contaminants producing a clean material suitable for recovery, using industry-leading soil washing, bioremediation and stabilisation methods. Our Zero Waste policy necessitates that we carry out vigorous analysis before, during and after treatment to ensure compliance.
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Asbestos and hazardous waste management Keltbray’s specialist capabilities comprehensively cover the management and removal of asbestos and other hazardous waste materials, such as lead, radiological, chemical and biological contamination, and operate within a wide range of sectors, including defence, Government, transport, heritage, leisure and energy including nuclear, commercial and retail. – Full service coverage throughout the UK from a number of regional offices, many now with accredited training facilities. – Holders of a full 3-year HSE asbestos licence – Three-way ISO accredited for quality, environmental and health and safety standards – Innovation-driven to create real customer value, delivering programme, cost, sustainability and safety benefits.
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Keltbray Holdings Limited Environmental Services capabilities overview | 2021
Asbestos was a popular post-war building material and is still found in many aspects of ageing structures due to its flexibility of form and function. Asbestos and the dust it emits is extremely hazardous and it is essential that the levels and types of asbestos that exist within a project locality are quickly and accurately determined, and then monitored by qualified technicians who can safely handle all industrial asbestos waste categories. Keltbray has a highly experienced, qualified and client-focused team of specialists, and the capability to design an asbestos risk/ hazardous waste assessment and management plan in line with industry regulations. The company has all the required Health & Safety Executive (HSE) licences in place to achieve full regulatory compliance and peace of mind. In addition to the necessary HSE asbestos licences, Keltbray is also ISO accredited for Quality, Environmental and Health and Safety standards, and operates its own licensed transfer stations under Environment Agency Guidelines. Keltbray’s Asbestos Management team offers a dedicated 24-hour Emergency Response service and can quickly mobilise teams of experts to manage and mitigate risk in crises situations.
KELTBRAY’S TREATMENT SOLUTIONS COVER: Technical delivery Ensuring all organisations are complying with all necessary regulations.
Removal and encapsulation All projects we undertake are managed to comply with industry legislation, approved codes of practice and HSE guidance notes.
Emergency response Our technical staff are on hand to provide advice and have specialised equipment and vehicles ready to mobilise from strategic centres throughout the UK.
Waste Transfer Station Keltbray operates EA licensed waste transfer stations, offering local practical solutions for the disposal of asbestos waste.
Management and training Asbestos awareness is an essential part of training for any person likely to come into contact with asbestos containing materials (ACMs).
Industry accreditation Keltbray holds maximum term Asbestos Licenses both in Great Britain with the HSE and in Northern Ireland with the HSENI and have full UK coverage.
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Our project portfolio 24
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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DECOMMISSIONING
Ferrybridge Power Station Following an intensive tendering process assessed by Scottish and Southern Electricity on a SafetyQuality-Cost basis, Keltbray’s decommissioning team was awarded the 30-month contract as Principal Designer and Contractor. Work commenced on site in October 2018, employing up to 220 staff including subcontractors. The works scope involves the removal of all hazardous materials, mainly asbestos, and the phased demolition of all other structures to grade level. Demolition of the main heavy steel structures is being carried out utilising a combination of heavy demolition machinery and the controlled use of Linear Shaped Cutting Charge (LSC’s) explosives. Only five of the eight cooling towers are to be demolished – the first being carried out in July 2019 by blasting both the Shell and Legs to enhance directional control of the collapsing structure. This tower was in a relatively unconstrained location and was demolished in advance of the main event to trial the proposed Shell and Legs demolition methodology. Having proven the design, the remaining 4 towers, two of which were very close to overhead HV lines, were demolished in October 2019 with test blasting of LSC’s also carried out that day. The Cooling Towers all collapsed in accordance with the design, 95% of the shell superstructures falling inside the base pond perimeter walls. The LSC test blasting on representative box columns with steel thickness up to 68mm also yielded the required results. The material from the Cooling Towers, in line with Keltbray’s recycling philosophy, will be crushed and reused on site. A program of works will see the demolition of the remaining structures including the main boiler house, two 198-metre tall chimneys and the barge unloader, which is situated nearby on the banks of the River Aire. The success of the project thus far has been the result of close collaboration between the project teams of Keltbray and SSE and the good co-operation of the major subcontractors. 26
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
SOIL AND CONSTRUCTION WASTE MANAGEMENT Keltbray provides a full range of outlet options for construction materials using transparent audit trails. Following chemical analysis to determine composition and identify any hazardous components, materials are classified in accordance with the waste classification codes, including List of Waste (LoW), the European Waste Catalogue (EWC) and Hazardous Waste Regulations. As a forward thinking organisation, we utilise innovative techniques that are project-bespoke depending on treatment requirements, and can include physical separation (screening), chemical or biological methods. Keltbray’s team of scientists and professionals are qualified in line
with CIWM/WAMITAB Operator Competence scheme in waste management and provide independent laboratory testing services that are accredited to UKAS ISO 17025 Standard and the Environment Agency MCERTS (for soils) scheme for quality and compliance purposes. While road transport will always be integral to its service offering, the company is increasingly exploring a range of diverse sustainable ways to service customers. In London, the convenience and effectiveness of the River Thames is exploited with waste being barged to treatment sites to reduce carbon emissions and save resources. This methodology has proved highly efficient and effective on the Thames Tideway Tunnel Project.
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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REMEDIATION
Worthy Down Barracks Keltbray successfully completed the complex remedial works at the Worthy Down Barracks (5km north of Winchester, Hampshire), consisting of approximately 52 hectares of land occupied by an existing MOD facility and an area of adjacent agricultural land. The works were part of Project Wellesley, the MOD’s redevelopment of land and the existing military training camp (Worthy Down Camp). Numerous historic investigations and studies dating back to 2009 identified widespread Asbestos Containing Materials (ACM) and free asbestos fibres in excess of acceptable human health concentrations in the made ground and shallow soils across the site. Hotspots associated to specific point sources such as underground storage tanks were also identified with elevated concentrations (above relevant screening criteria) of Poly Aromatic Hydrocarbons (PAHs), Total Petroleum Hydrocarbons (TPHs) and Lead were also identified as requiring remedial measures to mitigate the ongoing and future risks from these contaminants. The remediation strategy involved breaking the Pollutant Linkages (PLs) through the widespread excavation of the impacted made ground, which in turn allowed for the installation of a certified break / engineered cover system to be installed within the construction makeup. Earthworks levels required to facilitate onward redevelopment of the site were used to guide excavation depth with reference to the minimum thickness of engineered cover system that was required. In addition to the engineered cover system, remediation was delivered within ‘service corridors’ to allow third party contractors to install services and general utilities without the risk of encountering potential asbestos containing materials. The Worthy Down ‘Project Wellesley’ Scheme represents the largest of a number of enabling and remediation schemes delivered by Keltbray as a specialist remediation service provider. 28
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
ASBESTOS AND HAZARDOUS WASTE MANAGEMENT
Battersea Power Station Keltbray was contracted to undertake both licensed and non-licensed asbestos works which included removing Durasteel panels, asbestos pipe lagging and asbestos dust residue and debris from various pipeworks, floor penetrations, floors and walls throughout the Power Station complex. Quantities of asbestos removed: – Pipe lagging: 5000 linear metres – Asbestos residue to walls and floors: 10,000m² – Durasteel panels 5,000m² Much of the works were undertaken within the confines of sealed enclosures, placed under negative pressure and whilst the magnitude of the site afforded us the opportunity to create expansive enclosures (the largest = 10,000m³), we also needed to ensure that we would be able to
control air flow so we remained compliant with HSE requirements and our own internal procedures. Works were undertaken within a live environment with many contractors on site, which required pre-commencement and inprocess communications with all other associated stakeholders to ensure all were aware of the extent of our works. We also ensured suitable barriers, warning signs and information boards were put in place. The confined space elements of work require extensive pre-commencement training and permit to work protocol. All equipment was in accordance with our procedures and fully maintained throughout our works. As additional works were discovered throughout the project, our management team required the necessary resources on a daily basis to ensure all works were completed in accordance with our works programme.
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
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Sustainability framework To redefine the way sustainable development is delivered. Keltbray’s clear and guiding Purpose closely aligns with our long-standing reputation for innovation and delivery certainty, and with the millions of people who rely on our products every day. At Keltbray we are working to create a sustainable future by combining integrity and smart innovation to meet, to the greatest extent possible, the balanced needs of all our stakeholders. We are focused on enhancing the quality and value of our business through the disciplined allocation of our resources to meet the demands and expectations of our changing world, so that we grow our business safely, sustainably and responsibly, for the benefit of all. Darren James Chief Executive Officer
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Sustainability runs through everything we do. From the people we support, the company we sustain, the local communities we work in, the industry we represent and the planet we live on. The construction and infrastructure industry is very materials and resource intensive, with huge pressures exerted on the natural environment at every stage of a project’s lifecycle. Sustainability is therefore mutually beneficial to both the natural environment and our business, aiding us to use resources efficiently to create longterm sustainable value, build resilience to environmental and social pressures, as well as minimise risks throughout our supply chain to drive economic growth. Managing the environmental, social and economic pillars holistically is key to protecting our environment, supporting local communities, serving our customers, sustaining the economy and helping wider society thrive. The areas of focus opposite have been identified as being integral to Keltbray, based on a materiality assessment of their impact on our business, and they therefore set the framework for the Group’s Sustainability approach and programmes of work.
*
The UK construction industry accounts for:
45%
of the UK’s total carbon emissions, 60% of material use while creating a third of waste generated
3.1m
employment opportunities created
9%
of the UK’s total economy as defined by Gross Domestic Product (GDP) * Source: The Office for National Statistics
Keltbray Holdings Limited Environmental Services capabilities overview | 2021
Environment review OBJECTIVES AND SMART KPIS Decarbonise our operations to achieve Net Zero and assist our clients in meeting their individual pledges – Set science based target 2020 – Achieve Net Zero by 2050 – Assist our clients in meeting their own Net Zero timeline
Protect the environment and enhance biodiversity to ensure we leave a better environment than the one we found – Zero major environmental incidents – Our business and projects to have a zero net biodiversity loss and identify opportunities for biodiversity net gain
Use resources more efficiently, maximising their life cycle to drive circular economy – Zero non-hazardous waste to landfill – Define scope of water and material usage and set reduction targets for all divisions of Keltbray Group
ACTION AGENDA – – – – – –
Climate action Carbon footprint and energy efficiency Biodiversity Waste and the circular economy Water usage Materials and responsible sourcing
Keltbray's sustainability pledge is to provide innovative building and infrastructure engineering solutions that generate value to our customers and support their own sustainability commitments, whilst playing our own part in addressing the global challenges determined by the UN Sustainable Development Goals
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Keltbray Holdings Limited Environmental Services capabilities overview | 2021
This report was written, designed and produced by Keltbray Group Proposals and Corporate Communications Team. No part of it may be reproduced without the prior permission of Keltbray Holdings Limited.
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INNOVATION IN ENGINEERING
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