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Unlocking The Grey Belt – Case Study: Land at Windy Ridge
Cass Allen recently assisted on a challenging new development in Cornwall where it was necessary to assess the air quality and odour impact of an agricultural use on residences in terms of air quality and odour.
The Challenge
The project came with two major considerations related to a livestock calf rearing building in close proximity to dwellings and ecologically significant areas:
- Odour risks for residents.
- Air quality impacts on residents and nearby Sites of Special Scientific Interest (SSSIs).
A robust desktop-based solution was essential to establish the potential impact on air quality and odour from the livestock building.
The Solution
Odour. Using a source–pathway–receptor approach, combined with detailed weather data, we demonstrated that the risk of nuisance odours at the dwellings was negligible.
Air Quality: Initial screening with the SCAIL-Agriculture model flagged potential nutrient nitrogen impacts that could harm protected sites. Working closely with Natural England, we carried out a full dispersion modelling assessment to dig deeper taking into account nearly 300 local planning applications to assess potential cumulative impacts.
After rigorous assessment and open dialogue with Natural England, we provided the robust evidence needed to keep the project on track — balancing air quality and odour considerations arising from the proximity of the agricultural and residential uses.
The Result
The risks were managed and funding was secured. This was a great example of how timely environmental assessment keeps construction moving while safeguarding the environment for generations to come.
If you or any of your colleagues require any Air Quality or Odour assistance on your sites, then please contact mail@cassallen.co.uk
