Donald Rumsfeld's "known knowns, known unknowns and unknown unknowns" phrase has become quite a favourite in presentations by geotechnical engineers...

The risk presented by high rates of hazardous ground gas emissions into structures is well documented and means of monitoring and assessing this risk are set out in both BS 8576:2013 and CIRIA C665...

The Association of Geotechnical & Geoenvironmental Specialists (AGS) has produced new guidance for the description of made ground.

In mid-2104 Wildgoose Construction asked GEA to review the findings of three previous phases of investigation at a site in Runcorn adjacent to the Bridgewater Canal, where significant contaminated land issues had been identified.