Air Quality Monitoring

We provide a range of air quality monitoring services for specific client needs, including short and long-term, personal and static, pumped and passive sampling of gases, particles and odour in both indoor and outdoor environments.

  • Remediation – monitoring various pollutants at former industrial sites to ensure safety of site operatives and nearby existing or future residents
  • Odour – site surveys for introduction of, or development adjacent to a potential odour source, or to investigate complaints
  • Minerals – sampling for introduction of, or development adjacent to a potential dust source, or to investigate complaints
  • Traffic – monitoring of roadside nitrogen dioxide (NO2) and/or particulate matter to inform detailed air quality assessments for planning / condition discharge
  • Construction phase – monitoring of dust at construction sites for compliance with emissions limits / planning conditions or establishing mitigation requirements
  • BREEAM post-construction – sampling of formaldehyde and volatile organic compounds (VOCs) indoors to obtain the applicable credits, post fit-out, pre-occupancy
  • Workplace exposure monitoring – monitoring various pollutants to establish compliance with workplace exposure limits (WELs) or to investigate complaints
  • Occupant Wellbeing surveys – site surveys for investigation of occupant complaints, assessment of occupant satisfaction and providing a high-quality indoor environment (also relevant for WELL, LEED and other building rating systems)

We monitor, where appropriate, to enhance the expert advice we give to our clients.

Success Stories

Kennington Lane, Vauxhall, London Borough of Lambeth

Client: HG Living 
Architects: rg+p / DMBA

Cass Allen was asked to provide air quality consultancy services in order to discharge an onerous condition within the outline planning approval requiring the inclusion of extensive mitigation prevent the exposure of future residents within the proposed flats near the Oval in London to elevated pollutant concentrations. The mitigation was originally indicated as necessary in the development’s previous Air Quality Assessment.

Having reviewed air quality monitoring data from the surrounding area, which showed considerable improvement in ambient pollution in recent years, it was concluded that it could be possible to discharge the condition by demonstrating that air quality at the site has similarly improved.

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Latest News

Project News
14 May 2026

Cass Allen Supports Major Milestone at Coronation Square with Complex Acoustic Design

Cass Allen Supports Major Milestone at Coronation Square with Complex Acoustic Design.

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Project News
14 May 2026

Major Mixed-Use Development in Central Square, Cardiff

Cass Allen delivered an Air Quality Assessment to support a landmark mixed-use development in Central Square, Cardiff.

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Company News
14 May 2026

Welcoming back Ronny Ospina

We are delighted to welcome back Ronny to the team as a Senior Acoustics Consultant.

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Company News
25 Feb 2026

Welcoming three new faces to our technical teams

We are pleased to welcome three new team members – Finlay, Samuele, and Benedict – who each bring strong scientific and environmental expertise to the company.

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Company News
06 Oct 2025

Fresh Talent for Our Team: Christian Inman & Louis Davis

We’re really excited to welcome Christian Inman and Louis Davis to the team!

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