1 services found
BRD Environmental Ltd Services
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Contamination Assessment
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Ground Gases and Vapours
The potential for a risk from ground gases is assessed at desk stage and, where necessary, the ground investigation will include the installation of monitoring wells in boreholes. These wells or standpipes comprise a vertical plastic pipe with slots cut across the depth range of interest, surrounded by a special clay (bentonite) seal near surface, fitted with an upper gas tap and finished with either a flush or raised metal cover. These wells are ...