Gas Monitoring Services
Assessing Ground Gas Conditions for Safe Development
Gas monitoring is an important part of many site investigations, particularly on sites where there is potential for ground gas to be present. Chelmer provide a comprehensive gas monitoring service to assess gas conditions below ground and to support safe design and development. This service is typically carried out as part of a wider geotechnical or geo-environmental investigation.
Ground gases can originate from a variety of sources, including made ground, landfill materials and natural soil conditions. Identifying and monitoring these gases is essential in order to understand any potential risks to structures, services and occupants. Chelmer’s approach ensures that accurate and reliable data is obtained to inform appropriate design and mitigation measures.
Purpose of Gas Monitoring
The primary aim of gas monitoring is to determine the presence, concentration and behaviour of gases within the ground. This information is used to assess potential risks and to establish whether any protective measures are required as part of a development.
Monitoring allows engineers to understand how gas levels may fluctuate over time and under different environmental conditions. This is particularly important where developments are proposed on sites with a history of contamination or where ground conditions may give rise to gas generation.
By collecting data over a period of time, Chelmer are able to provide a clear assessment of gas conditions, supporting informed decision-making and compliance with relevant guidance.
Installation of Monitoring Points
Gas monitoring is typically carried out using installations formed within boreholes. Once drilling has been completed, boreholes can be converted into gas monitoring points, allowing measurements to be taken at specific depths below ground level.
These installations are designed to allow gases to be measured accurately while protecting the integrity of the monitoring point. Their location and depth are selected based on the objectives of the investigation and the characteristics of the site.
By integrating gas monitoring installations into borehole works, Chelmer ensure that monitoring can be carried out efficiently as part of a coordinated investigation programme.
Monitoring Process
Gas monitoring is undertaken over a series of visits, with readings taken at specified intervals to capture variations in gas levels over time. This approach allows changes in gas concentrations to be observed, providing a more complete understanding of site conditions than a single measurement would allow.
Data collected during monitoring typically includes gas concentrations and other relevant parameters, which are recorded and analysed as part of the overall investigation. This information is then used to assess the level of risk and to determine whether further action is required.
Integration with Site Investigation and Reporting
Gas monitoring forms part of Chelmer’s wider site investigation service, ensuring that it is delivered alongside other relevant techniques such as boreholes, trial pits and laboratory testing. This integrated approach allows all aspects of ground conditions to be considered together, providing a comprehensive assessment of the site.
Results from gas monitoring are incorporated into Chelmer’s reporting process, where they are analysed and presented clearly for use by engineers, developers and other stakeholders. Where necessary, the data can be used to support the design of gas protection measures or other mitigation strategies.
Supporting Safe and Compliant Development
Understanding ground gas conditions is essential in ensuring that developments are safe and suitable for their intended use. Chelmer’s gas monitoring services provide the data required to assess risks accurately and to comply with relevant guidance and standards.
By combining experienced personnel, appropriate monitoring techniques and a fully integrated service offering, Chelmer deliver reliable gas monitoring solutions across a wide range of sites. This ensures that potential risks are identified early and managed effectively, supporting safe and successful project outcomes.