Research Outputs (GCRO)

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Browsing Research Outputs (GCRO) by Author "Bobbins, Kerry"

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    Acid mine drainage and its governance in the Gauteng City-Region
    (2015-05) Bobbins, Kerry
    Acid mine drainage (AMD) in the Gauteng City-Region (GCR) has been described in the media as a ticking time bomb after it was officially reported to have begun surfacing from old mining works on the West Rand in 2002 (Masondo et al., 2011; TAU SA, 2011; Slack, 2013). Acid mine drainage occurs when ‘fool’s gold’ (FeS2) or iron pyrite found in mined rock oxidises. This occurs when either underground mine shafts, or crushed conglomerate in Mine Residue Areas (MRAs) on the surface, become exposed to oxygen and water creating run-off that is very high in sulphates – effectively sulphuric acid – and is hazardous to both humans and the environment (McCarthy 2010). Over the last decade, a flurry of news articles have highlighted the threat of acid water decant and its likely effects on human health, the environment, water quality, municipal infrastructure and building foundations in the Johannesburg Central Business District (CBD). These reports have fuelled anxieties around when and where decant will take place and who will be affected by AMD. In response to these concerns, government, through the National Department of Water Affairs (DWA), has introduced a set of immediate and short-term interventions to overcome decant in the West Rand. These have allowed AMD to be framed as an environmental emergency. DWA has also set in motion a process to develop a long-term solution that, through a broader and more inclusive approach, will solve various AMD issues over time including its impact on the Gauteng water supply. In relation to both these two government interventions – the immediate/short and long-term solutions – very few stakeholders or members of the public know enough about AMD and its governance to understand what the real challenges are and how they should respond. Even fewer are able to piece together the series of events that led up to the current and proposed set of actions taken by DWA to tackle AMD. This paper argues that the current trajectory of government-led responses has suspended meaningful public engagement and debate, and the result is a grey cloud of misinterpreted facts and presumed motives that has cast a shadow of misunderstanding, which in turn exacerbates the anxieties of affected communities and interested stakeholder groups
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    A framework for a green infrastructure planning approach in the Gauteng City-Region
    (2016-09) Bobbins, Kerry; Culwick, Christina
    As the population, economy and urban built environment in the Gauteng City-Region (GCR) expand, government is increasingly under pressure to provide urban infrastructure to support growth. It is increasingly important that this infrastructure is sustainable, minimising the negative environmental impacts often associated with traditional forms of urban development. Green Infrastructure (GI) is the interconnected set of natural and man-made ecological systems, green spaces and other landscape features that provide services and strategic functions in the same way as traditional infrastructure. In harnessing the benefits of ecosystem services, GI has emerged as a more efficient, cost effective and sustainable alternative – and sometimes accompanying approach – to conventional forms of infrastructure. Despite international evidence demonstrating how GI can be used as an alternative to, or in tandem with, traditional infrastructure, the GI approach has so far gained only limited traction in the GCR. In 2013 the GCRO published the State of Green Infrastructure in the GCR report. The report established the principles that underpin GI, used available data to map the extent of GI networks in the region, assessed to what extent municipalities were aware of and applying a GI approach, and demonstrated a possible way to value GI in local government financial systems. The conclusions of the State of Green Infrastructure report were used to guide the next phase of GCRO’s research in support of the adoption of GI approach – a phase focused on better understanding the opportunities for implementing GI in planning and infrastructure development programmes and on addressing some of the challenges associated with shifts towards this approach. A framework for a green infrastructure planning approach in the Gauteng City-Region, GCRO’s fourth Research Report, builds on the foundations laid in the State of Green Infrastructure report. It assembles expert inputs and reflections from collaborative stakeholder discussions in what was known as the Green Infrastructure CityLab to illustrate important considerations for the development of a GI planning approach in the Gauteng City-Region (GCR). The report is divided into three broad sections. Part A introduces the theoretical underpinnings of a GI approach and builds an argument for the importance of incorporating GI into planning and infrastructure development in the GCR. Part B presents three pieces written by external experts. They consider how GI and ecosystem services can be valued by municipalities, and how so-called ‘grey-green’ infrastructure design solutions can be implemented in the GCR. Part C reflects on the stakeholder engagement process that has been undertaken, primarily through the GI CityLab, to deepen understanding of how GI can be embedded in municipal practice. Based on these research findings, this report concludes with a strategy for GCRO’s next phase of work in its ongoing Green Assets and Infrastructure Project.
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    Mining landscapes of the Gauteng City-Region
    (Gauteng City-Region Observatory, 2018-01) Bobbins, Kerry; Trangos, Guy
    The extraction of gold along the Witwatersrand mining belt has fundamentally shaped the Gauteng City-Region (GCR) over more than a century. Mining in the region occurred across a vast area. The Witwatersrand basin is made up of three sub-basins – the West’, ‘Central’ and ‘East’ Rand – and stretches across a further seven distinct gold mining areas. These goldfields attracted prospectors, industrialists and work-seekers from across South Africa and around the world. They were responsible for the formation of Johannesburg and, over time, the development of large parts of the extended metropolis around it. For many years, gold mining produced immense wealth for mining companies, banks and residents – indeed the wealth extracted fired the entire South African economy. But there have been negatives. Gold mining also spawned a war, entrenched deep social divides, instilled exploitative labour practices, and devastated the natural environment. Though the industry is now in decline, the landscapes affected by mining are still identifiable by toxic scars that traverse the city-region. This Research Report, GCRO’s seventh, considers how the legacies of mining have been imprinted on the towns and cities of the Gauteng City-Region. The report uses ‘mining landscapes’ as a conceptual device to structure an analysis of the diverse impacts of mining, and to highlight the need for a comprehensive and collaborative approach to manage its after-effects. The report makes a unique contribution to existing literature on mining and mining waste in the city-region by presenting an integrated perspective on their urban, environmental, social and economic processes, characteristics and consequences, both historical and contemporary. While accounts are often told from the viewpoint of specific disciplines (such as history, geography or sociology), the analyses presented in this report – comprising of written pieces, archival excerpts and photo essays – are unbounded by distinctive disciplinary conforms. This allows for the diversity of the landscape to be explored in new ways. The report makes a call for the GCR’s mining landscapes to be understood as a connected landscape of systems rather than a set of isolated and forgotten features of a bygone mining era. From the abandoned mine areas that scatter the surface of the GCR, to earth tremors caused by hollowed out cavities below the earth, silicosis, acid mine drainage, distressed mining towns and more recent histories of artisanal mining – the legacy of gold mining in Gauteng has a variety of expressions, all emerging from the same interconnected history. The concluding chapter looks to the future and considers the possibilities for innovative and collaborative approaches to unshackle the towns and cities of the Witwatersrand from their gold-mining inheritance. This includes the prospects for spatial transformation, repairing social divisions, cultivating natural assets, and remedying the destructive health and environmental effects of a century of mining activity.
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    State of green infrastructure in the GCR
    (2013-07) Schäffler, Alexis; Christopher, Natasha; Bobbins, Kerry; Otto, Emmarie; Nhlozi, Mduduzi W; de Wit, Martin; van Zyl, Hugo; Crookes, Douglas; Gotz, Graeme; Trangoš, Guy; Wray, Chris; Phasha, Potsiso
    This State of Green Infrastructure report is both an assessment of the set of natural and manmade landscape features in the Gauteng City-Region (GCR) and an interrogation into how the services provided by these assets are perceived, understood and valued. Inspiration is drawn from the conceptual and planning framework of ‘green infrastructure’, through which ecological systems, green spaces and other landscape features are regarded as providing services to society in the same way as those offered by traditional ‘hard’ infrastructure.
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    Towards applying a green infrastructure approach in the Gauteng City-Region
    (Gauteng City-Region Observatory, 2019-12) Culwick, Christina; Khanyile, Samkelisiwe; Bobbins, Kerry; Dunsmore, Stuart; Fitchett, Anne; Monama, Lerato; Naidu, Raishan; Sykes, Gillian; van den Bussche, Jennifer; Vieira, Marco
    The Gauteng City-Region (GCR) regularly experiences heatwaves, raising renewed concerns over water security, as well as heavy and persistent rains, leading to severe flooding in some areas. In this context of heightened climate variability, thinking about ways to redesign our urban areas with more sustainable infrastructure solutions is becoming more and more important. Green infrastructure (GI) is emerging as an alternative approach to traditional (‘grey’) infrastructure in urban planning and development. Its emergence can be understood in terms of the growing demand for infrastructure and services, increased concerns over natural resource constraints and climate change, and the negative impacts associated with traditional approaches to designing and building cities. It has been proposed that GI can provide the same services as traditional infrastructure at a similar capital cost, while also providing a range of additional benefits. However, despite greater policy interest in green infrastructure in recent years, traditional infrastructure solutions to urban problems continue to dominate. This is partly due to the lack of a systematic evidence base to support GI implementation. There have been calls from decision-makers for more concrete examples of the benefits of successful urban GI applications, as well as for practical guidelines on their implementation. Towards applying a green infrastructure approach in the Gauteng City-Region is the GCRO’s eleventh Research Report. This report builds on the findings of two previous green infrastructure reports, as well as a CityLab process run with academics and government officials between 2014 and 2016. These outputs and the CityLab discussions highlighted as critical the need to for a deeper evidence base in building support for, and enhancing investment in, the GI approach. Unlike the earlier studies which were more theoretically grounded and policy oriented, this report comprises a number of technical investigations that more practically reflect on how a GI approach could be incorporated into urban planning in the GCR, and in other similar urban contexts.