QUANTITY SURVEYORS’ INVOLVEMENT IN THE DELIVERY OF SUSTAINABLE BUILDINGS IN LAGOS, NIGERIA CHAPTER ONE 1.1 Background to the Study. Any country's economy depends heavily on the construction sector, whose operations are essential to accomplishing the aims of national socioeconomic development, which include creating jobs, infrastructure, and housing. A healthy economy usually experiences an increase in construction activities (Ayodele and Alabi, 2011). The increasing effects of human activity on the environment in the last few decades have led to a thorough reevaluation of traditional methods in many different fields. Of these, the building and construction sector is one that contributes significantly to energy use, resource depletion, and environmental damage. It is becoming more and more important to establish sustainable building principles as urbanization picks up speed and population grows. Sustainability in building development terms simply refers to the process of designing communities and buildings with as little negative impact on the environment as possible, while also preserving resources and fostering long-term social and economic well-being. It includes an all-encompassing strategy that takes into account social, economic, and environmental factors at every stage of a building or development project's life cycle. A development that meets the needs of the present without compromising the ability of future generations to meet their own needs (Brundtland, 1987). However, the total concept of sustainability with respect to building development in general term is still a bit vague. Much emphasis has been placed on ‘green’ buildings over the past two decades. The concept began with the environmental movement in the 1960s which started a ‘back to nature’ concept in the design of houses then moved to energyconserving office buildings in the 1970s (Boyle, 2005). There are now various classifications for what sustainability centers on. Green buildings, life cycle cost analysis, sustainable materials, and energy efficiency are the primary components of sustainability lately. Green buildings and energy efficiency are concepts that focus on creating structures and systems that minimize their environmental impact, reduce resource consumption, and enhance overall sustainability. Healthy facilities designed and built in a resource-efficient manner, using ecologically based principles (Kilbert, 2008). Several evaluation instruments have been created to support and rank green building developments. Leaders in Energy and Environmental Design (LEED, US), BRE Environmental Assessment Method (BREEAM, UK), Green Building Council of Australia Green Star (GBCA, Australia), Green Mark Scheme (Singapore), DGNB (Germany) and Green Building Council of Nigeria (GBCN, Nigeria) are some of the leading organizations that conduct green building assessments for major nations. Accredited professionals are hired by the Green Building Council to conduct the assessment. To coordinate the activities of numerous green building organizations worldwide, the World Green Building Council was founded. Certain form of rating and score points are allocated to respective buildings that qualify under the sustainable category. Another classification for sustainable development is life cycle cost analysis LCCA. LCCA is a method used to assess the total costs associated with a building or infrastructure project over its entire life cycle, from initial planning and construction through operation and maintenance to eventual disposal or demolition. In the context of sustainable building development, LCCA is a valuable tool for evaluating the economic aspects of sustainability by considering not only initial construction costs but also long-term operational and maintenance costs. LCCA are critical in sustainability practices because the practice of creating "green buildings" in Africa is discouraged due to a lack of appropriate available materials and insufficient craftsmanship abilities in constructing them. however, LCCA helps in offering a clear path to sustainability by evaluating the total costs of a project, guiding decisions that consider long-term environmental and economic impacts. It helps identify sustainable practices, materials, and technologies, ensuring that choices contribute to both financial viability and environmental responsibility over the project's life cycle. Through operational cost, adopting sustainable practices in construction are feasible, by integrating environmentally friendly measures, such as energy-efficient systems and sustainable materials, buildings can realize long-term financial benefits. These include reduced energy consumption, lower maintenance costs, and potential incentives for sustainable designs. The relationship underscores the economic viability of sustainable construction practices over a building's operational life cycle. This is where the QS involvement is paramount because they ensure that sustainable practices align with budgetary considerations, fostering environmentally responsible construction while maintaining financial feasibility over the building's life cycle. This study will provide a significant contribution to the corpus of information on “Quantity Surveyors Involvement in the delivery of sustainable buildings” specifically to Lagos State, Nigeria. 1.2 Statement of Research Problem Despite global advancements in sustainable building practices, Nigerians know very little about them or use them infrequently. It is all caused by a lack of grasp of the underlying concepts. One unique challenge of sustainable buildings found in previous studies in Nigeria and several other countries was the lack of awareness. This implies that a lack of awareness of the benefits of green building is the reason for the people’s low level of acceptability of the concept (Ahmed, Yacim, Umar and Musa, 2022). Another reason lies in capital expenditure needed to facilitate a project. The involvement of Quantity Surveyors (QS) also in delivering sustainable buildings raises critical questions surrounding their awareness, proficiency, and impact on sustainable construction practices. With sustainability gaining prominence in the construction industry especially in urban cities such as Lagos, Abuja, Port Harcourt, Kaduna and Ibadan, the specific role of QS and the integration of Life Cycle Cost Analysis (LCCA) within their practices remain unclear. The statement of the problem addresses the need to examine the extent of QS awareness and understanding of sustainable principles, particularly in the context of LCCA implementation. Furthermore, the study seeks to investigate the proficiency of QS in recommending sustainable materials and technologies, exploring the factors influencing their decision-making process. The challenges or barriers faced by QS in integrating sustainability into projects, considering cost implications and regulatory frameworks, also demand scrutiny. Ultimately, there is a gap in understanding the overall impact of QS involvement on the success and performance of sustainable buildings, necessitating research to determine if their contributions result in tangible benefits such as cost-effectiveness, energy efficiency, and adherence to sustainability certifications. This study aims to bridge these gaps and provide insights into optimizing the role of QS in advancing sustainability in construction projects. 1.3 Aims and Objectives The aim of the study is to access the involvement of the quantity surveyor in the delivery of sustainable housing projects in Lagos, Nigeria with a view to enhancing sustainable Construction. The Objectives of this study are to; a. Examine the relative importance of the roles performed by quantity surveyors in the delivery of sustainable housing projects b. Access the extent to which quantity surveyors are involved in the performance of their roles in the delivery of sustainable housing projects c. Evaluate the factors influencing the involvement of quantity surveyors in the delivery of sustainable housing projects in Lagos, Nigeria. 1.4 Research Questions In addressing the research problem this study will provide answers to the following questions: a. What is the current level of integration of sustainable construction practices in the standard procedures and processes followed by quantity surveyors in Lagos? b. To what extent do quantity surveyors consider sustainability factors in their cost estimation and budgeting processes for building projects in Lagos? c. What challenges do quantity surveyors face in incorporating sustainable design and construction elements into their work in Lagos, Nigeria? d. Are there specific tools, methodologies, or guidelines that quantity surveyors in Lagos use for conducting Life Cycle Cost Analysis for sustainable buildings, and how effective are these tools in their decision-making process? e. How do clients in Lagos perceive the value of sustainable building practices, and to what extent does this influence the decisions made by quantity surveyors in project delivery? 1.5 Significance of the Study The study on Quantity Surveyors' involvement in the delivery of sustainable buildings in Lagos, Nigeria holds significant implications for various stakeholders. Firstly, it contributes to the construction industry by shedding light on the role of Quantity Surveyors in fostering sustainable practices, a critical aspect as the industry evolves toward environmental responsibility. Understanding their involvement can inform educational programs, enhancing the curriculum to equip future Quantity Surveyors with the necessary skills for sustainable construction. For policymakers and regulatory bodies, insights from this study can guide the formulation of policies that encourage and regulate sustainable construction practices in Lagos. It aids in creating a framework that aligns with global sustainability goals and ensures the resilience of the built environment in the face of environmental challenges. Furthermore, the study is beneficial for construction firms, developers, and clients, offering a roadmap for optimizing Quantity Surveyors' contributions to achieve both economic viability and environmental sustainability. Ultimately, the research's significance lies in fostering a more sustainable and resilient built environment in Lagos, aligning with global trends and contributing to the city's long-term development. 1.6 Scope of Study This research study investigates the roles of quantity surveyors in few sustainable housing projects in Lagos State, Nigeria. The primary participants in the study will be quantity surveyors actively involved in the construction industry in Lagos. Other stakeholders, such as architects, engineers, clients, and government officials, may also be included to provide a holistic perspective. The study will investigate the extent to which quantity surveyors in Lagos integrate sustainable design and construction practices into their work. This includes assessing their awareness, understanding, and implementation of sustainable building principles. A significant aspect of the study will be dedicated to understanding how quantity surveyors in Lagos incorporate Life Cycle Cost Analysis in their decision-making processes for sustainable building projects. Challenges and opportunities encountered by quantity surveyors in integrating sustainability and LCCA form a critical aspect of the study. The impact of existing government policies and regulations on quantity surveyors' practices is explored, with a tailored focus on the educational and professional training dimensions that shape their ability to embrace sustainable building practices and LCCA. CHAPTER TWO Literature Review 2.1 Introduction Sustainable development has become a global imperative, with the built environment playing a significant role in achieving environmental, social, and economic goals. In the context of Lagos, Nigeria, a rapidly growing urban center facing environmental challenges, the involvement of quantity surveyors in delivering sustainable buildings is of paramount importance. This literature review explores the roles and contributions of quantity surveyors in fostering sustainability within the construction industry in Lagos. 2.2 Quantity Surveying and its Merits Quantity surveying is a multidisciplinary profession within the construction industry that plays a pivotal role in managing and controlling the costs associated with building projects. A Quantity Surveyor, also known as a cost consultant or construction economist, plays a crucial role in ensuring that projects are completed within budget while meeting quality standards (Ashworth & Hogg, 2007). The role of quantity surveying can be traced back to the mid-19th century when it emerged in the United Kingdom in response to the need for a standardized approach to cost management in construction. The Royal Institution of Chartered Surveyors (RICS), established in 1868, has been a key institution in shaping and defining the quantity surveying profession. According to RICS, quantity surveying is defined as "a dynamic profession that deals with all aspects of the cost and financial management of built environment projects, from inception to completion and even use." The quantity surveyor, often referred to as a cost consultant or construction economist, is an indispensable professional who provides expert advice on the financial implications of various project decisions. The responsibilities of a QS encompass cost estimation, budgeting, procurement, contract administration, and cost control throughout the project life cycle (Seeley, 1997). One of the primary functions of a Quantity Surveyor is to prepare accurate cost estimates for construction projects, helping clients and stakeholders understand the financial implications of their endeavors (Keane, 2009). This involves analyzing project specifications, drawings, and other relevant documents to quantify the materials, labor, and overhead costs involved. This process is crucial for effective project planning and budgeting. During the procurement phase, Quantity Surveyors assist in selecting contractors and suppliers by evaluating bids and providing recommendations based on cost, quality, and other relevant factors (Smith, 2015). Additionally, they contribute to the development and management of contracts, ensuring that legal and financial considerations are addressed to protect the interests of all parties involved. Throughout the construction phase, Quantity Surveyors monitor and control project costs, identifying and addressing potential cost overruns or deviations from the budget (RICS, 2019). They also handle variations and changes to the scope of work, adjusting the budget and contract accordingly. This role requires a combination of technical, financial, and legal knowledge to navigate complex construction projects successfully. 2.3 Sustainability Sustainability has emerged as a critical concept in addressing the complex challenges posed by environmental degradation, social inequality, and economic instability. At its core, sustainability seeks to balance the needs of the present without compromising the ability of future generations to meet their own needs. This multifaceted approach considers the interconnectedness of ecological, social, and economic systems, aiming to create a harmonious coexistence between humanity and the environment. One key aspect of sustainability is environmental stewardship, focusing on the responsible use of natural resources and the mitigation of negative impacts on ecosystems. This involves adopting practices that reduce carbon emissions, promote biodiversity, and conserve water resources. The landmark report by the Intergovernmental Panel on Climate Change (IPCC) emphasizes the urgency of addressing climate change, highlighting the necessity for sustainable practices to mitigate its far-reaching consequences (IPCC, 2021). 2.3.1 Overview of Sustainable Building Practices; At the core of sustainability is the acknowledgment that the construction and operation of buildings significantly contribute to environmental issues such as climate change, resource depletion, and pollution. A sustainable approach seeks to address these challenges by integrating ecological, economic, and social considerations into every phase of a building's life, from design and construction to operation and eventual decommissioning. One fundamental aspect of sustainable building is energy efficiency. Designing and constructing buildings to minimize energy consumption through efficient insulation, advanced HVAC systems, and renewable energy sources contribute significantly to sustainability (Gou, Xie, & Yang, 2016). Utilizing green building materials, such as recycled or locally sourced materials, further reduces the ecological footprint of construction projects (Ding et al., 2017). Water conservation is another critical component of sustainable building. Implementing water-efficient technologies, such as low-flow fixtures and rainwater harvesting systems, helps reduce water consumption and minimizes the impact on local water resources (Howard, 2006). The incorporation of green spaces and eco-friendly landscaping is a key aspect of sustainable building design, promoting biodiversity and improving air quality (Dunnett & Kingsbury, 2019). Sustainable buildings often prioritize the use of native plants, green roofs, and permeable surfaces to mitigate the urban heat island effect and enhance overall environmental quality. Waste reduction is also crucial consideration in sustainable building practices. Adopting construction practices that minimize waste generation and promote recycling or repurposing of materials contributes to a more circular economy in the construction industry (Tam, Tam, & Zeng, 2015). The certification of buildings through programs like LEED (Leadership in Energy and Environmental Design) or BREEAM (Building Research Establishment Environmental Assessment Method) provides a standardized framework for evaluating and recognizing sustainable building practices (Yudelson, 2007). These certifications guide architects, engineers, and builders in implementing a holistic approach to sustainability in their projects. 2.3.1.1 LCCA as a Guide on Sustainable Building Practices Life Cycle Cost Analysis (LCCA) is a crucial tool in sustainable building practices, providing a systematic way to assess the total cost of a building over its entire life cycle. LCCA takes into account not only the initial construction costs but also the operational and maintenance costs, as well as the costs associated with the eventual disposal or deconstruction of the building. This comprehensive analysis helps in identifying the most cost-effective and environmentally responsible solutions over the long term. In the initial stages of a building project, LCCA guides decision-makers in selecting materials, systems, and designs that offer the best balance between upfront costs and long-term benefits. For example, investing in energy-efficient technologies may have higher initial costs but can result in significant operational cost savings over the life of the building. LCCA, therefore, encourages a shift from a short-term cost perspective to a more sustainable and economically viable long-term outlook. 2.4 Historical Context of Sustainable Construction in Nigeria: Over time, the nation has undergone significant transformations in its approach to construction, transitioning from traditional practices to embracing sustainability as a core principle. In the early stages of Nigeria's development, indigenous communities predominantly relied on traditional and vernacular building techniques. These methods, characterized by the use of locally sourced materials such as mud bricks and thatch, showcased a deep understanding of sustainable practices. The structures were inherently designed to be energy-efficient and responsive to the local climate (Akande, 2013). However, as the country gained independence and entered an era of rapid urbanization, the demand for modern infrastructure led to a shift towards conventional construction practices. The post-independence period marked a turning point as Nigeria experienced significant urbanization and economic growth. The construction industry witnessed a surge in demand for buildings and infrastructure, and conventional construction methods became more prevalent. However, this phase also brought to the forefront environmental challenges associated with rapid development, including inadequate waste management, air pollution, and resource depletion (Odufuwa, 2014). The oil boom of the 1970s brought unprecedented wealth to Nigeria but also intensified environmental concerns. The newfound prosperity led to increased urbanization, putting immense pressure on ecosystems and natural resources. The negative environmental impacts of this era emphasized the urgent need for sustainable development practices in the construction and infrastructure sectors (Onibere, 2015). International influences played a pivotal role in shaping Nigeria's commitment to sustainable construction. The adoption of the United Nations Sustainable Development Goals (SDGs) in 2015 provided a comprehensive framework for integrating sustainability into various sectors, including construction (United Nations, 2015). This global alignment encouraged the Nigerian government to formulate policies and regulations that incorporated sustainable practices. One significant milestone in this direction was the introduction of the National Building Code in 2006. This regulatory framework includes provisions for energy efficiency, waste reduction, and environmental sustainability, signaling the government's commitment to integrating sustainable principles into the construction industry (Federal Republic of Nigeria, 2006). The National Building Code serves as a guide for architects, engineers, and builders, emphasizing the importance of environmentally responsible construction practices. 2.5 Role of Quantity Surveyors in Sustainable Building Projects Quantity surveyors play a pivotal role in the construction industry, overseeing various aspects to ensure the successful and cost-effective delivery of projects. At the project's outset, they are tasked with providing accurate cost estimates by analyzing plans and specifications. Throughout the construction process, quantity surveyors develop and manage budgets, working collaboratively with stakeholders to align financial plans with project objectives. The integration of sustainability into traditional Quantity Surveying practices marks a significant evolution in the construction industry's approach. Traditionally focused on cost estimation and procurement, Quantity Surveyors now embrace a broader perspective that incorporates sustainability considerations. The integration of sustainability into traditional Quantity Surveying practices is notably emphasized through the adoption of Life Cycle Costing (LCC). Life Cycle Costing is a comprehensive approach that considers the entire life span of a construction project, including not only the initial construction costs but also the operational and maintenance costs over its life cycle. Traditionally, Quantity Surveyors primarily focused on upfront construction costs. However, with the integration of sustainability, they are increasingly utilizing Life Cycle Costing to assess the financial implications of sustainable features and materials. This involves evaluating the long-term costs and benefits associated with environmentally conscious choices, considering factors like energy efficiency, durability, and maintenance requirements (Barlow, 2019). In the context of Life Cycle Costing, Quantity Surveyors play a crucial role in conducting detailed analyses that guide decision-making throughout the project. They consider the potential savings and efficiencies offered by sustainable elements, such as energy-efficient systems and ecofriendly materials, over the entire life cycle of the building. This holistic perspective enables a more informed evaluation of the economic viability and long-term sustainability of incorporating green practices (Sofroniou et al., 2019). Moreover, Quantity Surveyors actively engage in educating clients about the advantages of Life Cycle Costing in sustainable construction. They communicate how considering the entire life cycle, rather than just initial costs, can lead to more economically sound decisions that align with sustainability goals. This education and awarenessbuilding process is integral to fostering a collaborative approach to sustainable construction (Wong & Cheung, 2015). 2.5.1 Challenges Faced A critical challenge lies in the limited awareness and understanding of sustainable construction practices among key stakeholders, including clients, contractors, and developers (Baiden et al., 2017). Quantity surveyors often face resistance rooted in a lack of knowledge about the long- term benefits of sustainable initiatives, complicating efforts to integrate eco-friendly features into projects. A predominant challenge is the prevailing perception that sustainable construction is cost-prohibitive, necessitating that quantity surveyors convince stakeholders of the long-term benefits such as reduced operational costs and increased property value (Akadiri et al., 2012). This discrepancy between perceived high upfront costs and the long-term returns on investment can impede the adoption of sustainable measures. The limited availability of sustainable materials in the local market exacerbates these challenges. Quantity surveyors grapple with difficulties in sourcing materials meeting sustainability criteria without exceeding budget constraints, leading to increased costs and logistical challenges (Fagbenle et al., 2017). The scarcity of such materials may hinder the seamless integration of sustainable elements. Inconsistent or unclear regulatory frameworks and policies related to sustainable construction in Lagos contribute to the challenges faced by quantity surveyors (Enshassi et al., 2017). The absence of well-defined standards and regulations creates uncertainty, making it challenging for quantity surveyors to effectively incorporate sustainability requirements into projects. Moreover, there is a pressing need for skills development and training in sustainable construction practices within the quantity surveyor profession (Olatunji, 2013). Insufficient expertise in this domain may hinder effective communication of the benefits of sustainable construction and impede the seamless integration of eco-friendly technologies and methodologies. Resistance to change within the industry is an additional obstacle (Oyedele et al., 2015). Quantity surveyors may encounter reluctance from contractors and traditional construction practices that resist adopting new, sustainable methods. The entrenched practices and resistance to change within the construction industry can pose significant challenges in implementing sustainability measures. 2.6 Case Studies of Sustainable Construction Projects in Lagos The case studies on Lagos's sustainable construction projects offer a thorough rundown of cutting-edge methods used in the field of urban development. These studies emphasize important components like energy efficiency, waste management, and LCC Assessment, and they show a deliberate trend towards eco-conscious building approaches. Prominent initiatives combine recycled materials, green areas, and renewable energy sources to demonstrate a dedication to environmental responsibility. The examination of these cases provides insightful information about the difficulties and achievements of applying sustainable practices in Lagos' distinct urban setting, illuminating practical tactics for promoting ecological balance in state-funded building projects. The Heritage Place, which is situated in the state of Ikoyi, Lagos, serves as a noteworthy example of how far sustainability has advanced in Nigeria. After completion in 2016, the 14story skyscraper achieved LEED certification for sustainability in both design and construction. It may also take pride in being Nigeria's first commercial building to receive environmental certification. Key environmentally friendly features include the use of harvested water for irrigation and toilet flushing, a building oriented according to the sun's pattern to reduce solar exposure and energy use for cooling, heat recovery through the centralized fresh air supply system, and several sustainable design choices made in the structure. All of these important characteristics—which are all included in the LCC Assessment—have demonstrated a dedication to water conversion, a favorable trajectory toward energy efficiency, and a clear commitment to a larger initial capital expenditure to balance lower operating cost spending. Another case study centers on the Stanbic IBTC Bank at Idejo Lagos State. The project consists of a 985.615 sqm structure on a 1,220.400 sqm plot of land. The project has implemented various sustainable efficiency measures in order to promote sustainability and ensure an eco-friendly commercial building, combining creative design elements and passive design strategies to ensure a balance between the façade’s facial aesthetic and the green measures’ effectiveness. Reduced Window to Wall Ratio, Reflective Paint on External Walls, Variable Refrigerant Volume (VRV) Cooling System, Energy-Saving Light Bulbs, Occupancy Sensors in Bathrooms, and Closed Cabins, as well as water-saving fittings and fixtures in rest rooms and kitchen were among the strategies implemented. Stanbic IBTC Bank Idejo Branch has received a Preliminary EDGE Certificate from Sintali. Other examples include Lekki Pearl Estate located at Sangotedo Lagos, The ongoing Ilubirin Foreshore Housing Project in Ikoyi, Peridot Parkland Estate at Badagary, U.S Consulate, Victoria Island, Lagos and Nestoil Tower. All green certified buildings in Nigeria. 2.7 Regulatory Environment for Sustainable Buildings. The global regulatory landscape for sustainable buildings encompasses a multifaceted approach to address environmental considerations in construction. Building codes and standards serve as fundamental frameworks, incorporating mandatory provisions for energy efficiency, water conservation, and the use of sustainable materials. Internationally recognized certifications, like LEED and BREEAM, provide incentives for developers to voluntarily adhere to stringent environmental criteria. Environmental Impact Assessments (EIA) are a common requirement for large-scale projects worldwide, ensuring thorough evaluations of potential ecological impacts and the implementation of mitigation measures. Government policies and incentives play a pivotal role, offering tax credits, grants, and relaxed regulations to motivate the integration of energy-efficient technologies and renewable energy sources in construction projects. Effective waste management regulations are integral to sustainable construction practices globally, mandating the implementation of waste reduction strategies during construction. Renewable energy mandates, increasingly prevalent, stipulate a minimum percentage of a building's energy to be derived from renewable sources, encouraging the adoption of solar panels, wind turbines, and other clean energy solutions. Additionally, regulatory emphasis on adaptive reuse incentives promotes the repurposing of existing structures, aligning with sustainability goals by minimizing the demand for new construction materials. Collectively, these regulatory measures underscore a shared global commitment to mitigating the environmental impact of construction, fostering environmentally conscious practices throughout the built environment. Adherence to these regulations not only ensures compliance but also cultivates a more sustainable approach to urban development on a global scale. 2.7.1 Regulatory Environment In Lagos, Nigeria The regulatory framework for sustainable buildings in Lagos, Nigeria, is shaped by several key measures aimed at fostering environmentally responsible construction practices within the region. Building codes and standards established by Lagos State, such as those outlined by the Lagos State Physical Planning and Development Regulations, serve as the foundational requirements for construction projects. The Green Building Council of Nigeria (GBCN) also plays a crucial role in promoting sustainable building practices and certifications within the country. Developers often seek certifications such as the GBCN Green Building Certification to demonstrate their commitment to stringent environmental standards. Environmental Impact Assessments (EIA) are a requisite for large-scale construction projects in Lagos, ensuring a comprehensive evaluation of potential environmental impacts and the implementation of necessary mitigation measures. The Lagos State Environmental Protection Agency (LASEPA) is actively involved in overseeing environmental compliance within the state. Government policies and incentives, facilitated by agencies such as the Lagos State Ministry of Physical Planning and Urban Development, contribute to the promotion of sustainable practices. These policies may include tax incentives or grants for projects that integrate energy-efficient technologies and environmentally friendly features. Waste management regulations are integral to sustainable construction practices in Lagos, with the Lagos Waste Management Authority (LAWMA) overseeing waste reduction and disposal strategies. 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