Phase 1 Desk Study For Development Near a Landfill Site
Through years of industrial activity and lack of environmental regulations on landfill sites, across the UK, many areas have been subject to contamination, posing a potential risk to human health and the wider environment. Assessment of the potential risk of development near a landfill site through a Phase 1 Desk Study is enforced by the Environmental Protection Act 1990 which requires potential land contamination to be dealt with during the planning process. While a Phase 1 Desk Study for construction near a landfill site is often required by local authorities, it is the responsibility of the developer to carry out this process, either by themselves or more likely through a competent environmental consultant.Get In Touch
A Phase 1 Desk Study For Residential Development Near a Landfill Site - Case Study
Prior to contacting us, our client had planning permission granted, by Sheffield City Council, for a new build home near a landfill site with the condition of first carrying out a Phase 1 Desk Study, known in the industry as a Preliminary Risk Assessment, to assess the likelihood of land and ground gas contamination from the nearby landfill site at Parkwood Springs in Sheffield. We first analysed historical map data as far back as the 19th century to identify the past uses of the site as well as any past landmarks nearby that could have left a legacy of soil contamination. Contamination sources may not always be clear through simply observing the current environmental setting of a site as contamination from past activity can remain in soils for a very long time.
Desk Study - A vital part of our research for this Phase 1 Desk Study, as with all desk studies for development near landfill sites, involved collating information from reputable sources such as the Environment Agency. For example, we obtained extensive data of the ground conditions present at the site and the surrounding area through the British Geological Survey. This allowed us to not only identify the soil types and bedrock geology of the area but also to find out if the area has been subject to any past mining activities. Past mining activities can affect the land by causing heavy metal contamination that can be harmful to humans and the local environment but it can also affect the structural integrity of the ground which will have important implications for construction work. Data on hydrology and hydrogeology was also collected, this is important in a Phase 1 Desk Study, because it tells us where controlled waters are located and gives signs of groundwater conditions which are important when considering the transportation of contamination. For example, soil contamination can travel a long way if transported through rivers or groundwater.
Assessing the Risk of Contamination From a Landfill Site Through a Phase 1 Desk Study
Risk Assessment - In the risk assessment portion of this Phase 1 Desk Study we paid close attention to the nearby Parkwood Springs landfill site. Landfill sites can release ground gases such as methane and carbon dioxide that can be very harmful if they are released into people's homes. Contamination from landfill sites can also spread through groundwater and through soil leading to potential issues for human health through direct contact with contaminated soil or inhalation of soil dust during construction work or as a residential end user. Soil contamination can also impact human health through cultivation of plants in contaminated soil that are then eaten. Therefore, landfill sites present an important potential risk to human health and the environment so the degree of risk they present in a given situation needs to be assessed.
Conclusion - In this particular case, the risk assessment for our Phase 1 Desk Study showed that the proposed development near the landfill site of Parwood Springs was located a large enough distance from the landfill site that the risk of land and ground gas contamination was much reduced and that the landfill site itself was also no longer in operation. We also found that the landfill site had been capped and there were gas management systems in place further reducing the likely risk of contamination spreading from the site. These observations, coupled with the lack of observable risks from alternative sources, lead us to assume that the possibility of unacceptable risk from land and ground gas contamination was unlikely.
I Need a Phase 1 Desk Study (Preliminary Risk Assessment) For a New Build House Near a Landfill Site
We can carry out desk studies on potentially contaminated land for a range of development projects, including for those located near landfill sites across England.
1. Contact us and let us know your requirements
2. Following initial consultation we can provide an outline proposal detailing how we can help and the costs involved
3. Our environmental consultants will then carry out a Phase 1 Desk Study (Preliminary Risk Assessment) and, if requested, visit your site to carry out a supporting Walkover Survey
4. We can complete a Phase 1 Desk Study within days of your initial enquiry allowing you to stick to schedules and minimise any disruption to your project