Abstract
Nature-based solutions (NBS) can be used in combination with the reopening of piped rivers to support area development. In certain cases, piped rivers can run through disused landfills. This presents a complicating factor because landfills provide the possibility for river water to be contaminated by waste. In Skien municipality, close to Oslo, Norway, NBS are being considered as part of a potential reopening of the Kjørbekk stream. A 4-km stretch of the stream is contained in an aging pipe infrastructure that is buried under two disused landfills. The pipe infrastructure does not have the physical capacity to cope with an increase in precipitation brought about by current climate change, and in certain areas, the pipe has started to leak. This means that surface water runoff that cannot be accommodated by the pipe, as well as water that leaks from the pipe, can become contaminated by the waste in the disused landfill. Furthermore, the water can be transported with the stream course to the final recipient, taking the contamination with it. Reopening the stream and providing new water pathways can alleviate these problems, but it must be carried out so that contamination is not allowed to spread. This case study reveals how certain NBS that focus on reducing the amount of water in contact with pollutants, reducing the amount of particle spreading, remediating contaminated water, and remediating contaminated soil could be implemented at the site and function as a catalyst for an incremental city development. Integr Environ Assess Manag 2022;18:99-107. © 2021 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
Highlights
Societal challenges in river landscapes are often water related, both in terms of water quantityPublished 21 May 2021 on wileyonlinelibrary.com/journal/ieam
The results demonstrated that the green infrastructure encompassing the nature‐based solutions (NBS) was the best option because it provided more than one benefit and wileyonlinelibrary.com/journal/ieam
This paper presents a unique case study from the Kjørbekk stream in Skien municipality in Oslo, Norway, where the predicted increased rainfall volume caused by climate change renders the current surface water network unable to meet this demand (Norwegian Environmental Agency, 2019)
Summary
EDITOR'S NOTE: This article is part of the special series “Incorporating Nature‐based Solutions to the Built Environment.”. The series documents the way in which the United Nations Sustainable Development Goal (SDG) targets can be addressed when nature‐based solutions (NBS) are incorporated into the built environment. This series presents cutting‐edge environmental research and policy solutions that promote sustainability from the perspective of how the science community contributes to SDG implementation through new technologies, assessment and monitoring methods, management best practices, and scientific research
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