Ground Gas Monitoring is a service that Kiwa can provide, or it is also part of a more detailed Phase 2 Intrusive investigation where assessment is made to BS8485 (Code of practice for the design of protective measures for methane and carbon dioxide ground gases for new buildings).

In either case we monitor standpipes placed into boreholes (installed by us, or third parties) for a range of ground gases that usually include:

  • Carbon Dioxide
  • Methane
  • Carbon Monoxide
  • Oxygen
  • Hydrogen Sulfide

As well as recording other site data:

  • Weather conditions
  • Ground conditions
  • Borehole conditions
  • Borehole locations
  • Flow Rate
  • Atmospheric Pressure
  • Relative Borehole Pressure

 What is the output?

The data gathered can be placed into a simple factual report with location plans and borehole monitoring data.

It can also be provided in an assessment report that would be to assess the likely protective measures required for the proposed development type (e.g. residential, commercial, etc.).

Any assessment would be in line with the requirements presented in BS8485 (Code of practice for the design of protective measures for methane and carbon dioxide ground gases for new buildings) and also consider the information presented in other documentation such as CIRIA C665.p

 How are the reports presented?

Our reports are provided in PDF format via email.