Gas Monitoring for Residential Development in Cornwall

Ruddlesden geotechnical have been undertaking ground gas monitoring to provide data for a ground gas assessment for the proposed residential development of land near Newquay, Cornwall.

The Phase 1 Preliminary Contamination Assessment and mining risk assessment identified that an Elvan Dyke (coarse-grained igneous intrusion) had previously been quarried within the centre of the proposed development site and that the quarry had subsequently been used as a landfill site and infilled with domestic refuse.

As part of the contaminated land assessment, ground gas monitoring wells were installed within windowless sample boreholes, to facilitate the long-term ground gas monitoring.

Ruddlesden geotechnical use an infra-red gas analyser to monitor levels of carbon dioxide, methane, oxygen, carbon monoxide, hydrogen sulphide and gas flow.