I can't give you specific examples for commercial reasons, but it is my
experience that few if any inert sites are non-gassing. Invariably *some*
putrescible material has been included, if only material such as plasterboard or
timbers, and often domestic waste has *somehow* found it's way in too.
Furthermore, a chalk environment is likely to offer preferential gas flow
pathways, so even if pressures are low, high concentrations of gas could
travel far. In my view the only safe assumption is that it will be gassing, and
it's up to the applicant to prove that it's not.
Barry Croft
GREEN BRAIN
www.greenbrainassociates.co.uk
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