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Our research on the natural processes that reduce pollutant concentrations in the subsurface has enabled the UK to adopt "Natural Attenuation" as a management policy and has changed professional practice at many contaminated sites. The massively reduced costs of this approach over active clean-up of sites in 2008-13 has saved a minimum of £100M for the UK. Our research has also influenced European practice, saving hundreds of millions of Euros. The beneficiaries are typically chemical industries of all sizes, from refineries to small repackaging plants and petrol station owners, but also local authorities and the State in cases where they would bear the cost of clean-up.
Surface water runoff in urban areas makes a significant contribution to pollution of lakes and rivers, but historically is poorly addressed in catchment models. The School of Geography (SoG) developed a Geographic Information System (GIS) model and supporting database to quantify urban source area loadings of 18 common and priority pollutants. This knowledge improves catchment models and supports impact assessment and mitigation planning by environment managers. The research has been exploited on behalf of the Department for Energy, Food and Rural Affairs (DEFRA), the Welsh Assembly, and the UK water industry (UK Water Industry Research — UKWIR, and United Utilities). The research has had three distinct impacts: 1) its use addressing EU Water Framework Directive obligations; 2) its on-going influence on construction industry guidance; and 3) the commercialisation of its stormwater pollutant coefficient database for Sustainable Urban Drainage Systems (SUDS) planning software.
The contamination of water sources is a serious threat to the environment and to human health. Endocrine-disrupting chemicals (EDCs) cause sexual dysfunction in fish, potentially affecting the health of fish populations in the UK and abroad. Prof. Hill's research has used bioassays combined with chemical fractionation and mass-spectrometry profiling techniques to identify endocrine-disrupting chemicals present in wastewater effluents that are discharged into the environment and that can bio-accumulate in fish. This has enabled international and governmental organisations to assess the risk of chemical discharges to the environment, to develop tests to monitor the toxicity of these newly-discovered EDCs, and to inform policy decisions on environmental protection and conservation.
The results of commissioned research by Aberystwyth University (AU) have shaped decision-making that led to the relocation of refugee Roma, Ashkali and Egyptian (RAE) communities in Mitrovica, northern Kosovo. In 2009/2010 AU research unequivocally identified the source of elevated lead (Pb) levels in soils that had been blamed for high infant and adult mortality rates in RAE refugee camps, and established that Roma Mahalla had sufficiently low soil Pb levels to permit the construction of a purpose-built housing development for the RAE communities. Following the relocation of the RAE families to Roma Mahalla in 2010/2011 there has been a significant reduction in blood Pb levels in children with no reported deaths attributable to Pb poisoning. This AU research project has had a demonstrable positive impact on life quality and human health of the resettled RAE communities living in Mitrovica.
Research into the characteristics and remediation of mining pollution has had sustained and significant impacts (2008 - 2013) on environmental policy and practice at regional, national and international scales. Impacts, all with documentary evidence, include:
A team at Bristol University has played a central role in the development of new methods for assessing water quality in rivers and lakes. These are making it possible for the water industry to more reliably assess water quality and identify sites where remedial measures must be applied to meet the new standard of `good ecological status' as required by the European Union Water Framework Directive (WFD), which passed into UK law in 2003. The innovative, diatom-based tools were used in 2008 and 2009 to assess all targeted surface waters (rivers and lakes) in the UK and Ireland, leading to massive investment in infrastructure. This has opened up the prospect of higher quality water in lakes and rivers - something that the public and environmental organisations demand. Over the next few decades, the investment will bring an estimated benefit of £200 million to residents in England and Wales alone.
Global waste disposal strategies and chemical regulations have been transformed through LEC's world-leading research into the environmental sources, fate and behaviour of persistent organic pollutants (POPs). Firstly, our research has directly supported controlled high temperature incineration as a long-term option for the disposal of municipal waste, by showing that well regulated incineration is not an environmentally significant source of dioxin emissions. Secondly, our research has maintained the controlled utilisation of sewage sludge (biosolids) on agricultural land as an effective risk-based management solution that re-cycles valuable carbon and nutrients to soil. Our research has underpinned the development of the UK's Dioxin Strategy and supported international chemicals regulation for one of the most important global flame retardant chemicals in current use under the Stockholm Convention.
The primary mission of the Centre for River Ecosystem Science (CRESS: http://www.cress.stir.ac.uk/index.html) is to build and translate scientific evidence into advice to end-users and policy makers in river management, both nationally and internationally. Site-based advice, design and monitoring have been provided to 55 projects, including award-winning river engineering schemes. Independently, our research in community ecology, fluvial geomorphology and agricultural pollutants has supported an outstanding contribution to the UKs response to the key EU Environmental Directives — Water Framework, Flooding, Species & Habitats and Bathing Waters. We have developed the official tools that are now used to determine the status of freshwaters and structure catchment management plans, and trained others in their use, have pioneered risk assessments and modelling of nutrient, pathogen or carbon losses, publicised their effects, scoped mitigation options though engaging with end-users, and steered the pan-European comparison of bio-assessment methods that now underpins common water policy.
Good quality water is essential for life on earth. The `Centre for Intelligent Environmental Systems' (CIES) has developed computer-based solutions for the assessment of river water quality by environmental agencies, working to improve the quality. CIES research has informed discussions and decisions of the UK Technical Advisory Group for the Water Framework Directive (UKTAG WFD). UKTAG WFD have selected the WHPT (Walley, Hawkes, Paisley & Trigg) method, for assessing river water quality throughout the UK, in the context of river management to meet the targets set in the Water Framework Directive (Directive 2000/60/EC from the European Union), which the UK government signed up to in 2000 (Beneficiaries: UKTAG WFD; Environment agencies; The public). Indirect impacts can also be attributed to CIES research, as it enables improvements of river quality, which triggers positive impacts on the natural environment, public health and quality of life (Beneficiaries: The public). CIES software has also been released to environment agency biologists as second opinion tools, thereby resulting in improved delivery of the public service provided by these biologists, when they use the software (Beneficiaries: Environment agencies; Environment agency biologists; The public).
New approaches to analysing and modelling water systems, developed at Cardiff, have driven national policy changes to improve the proportion of fully functioning water ecosystems in the UK. UK Government, Welsh Government and a range of NGOs have adopted these new approaches, which replace traditional descriptive methods with experimental, analytical and modeling techniques for understanding water ecosystems.
These approaches have been used to develop the water-related component of the National Ecosystem Assessment. This document has directly impacted on UK river management policy, forming the basis of two Defra White papers, `Natural Choice' and `Water for Life', underpinning Welsh Government's Natural Environment Framework and informing the work of a range of NGOs.