To be able to adequately assess the level of risk, you need to have gas flow
rates, what you have so far suggests to me that the ground gas equilibrium
is not being replenished as quickly as they are sucking the gas out, but you
need to quantify flow rates. I would draw your attention to a paper in
Ground Engineering Journal, Feb 99, by Wilson & Card, which discusses risk
and gas flow rates (it goes further than CIRIA Report 149) and is very
useful.
Regards,
Tim.
-----Original Message-----
From: Clare Horton [mailto:[log in to unmask]]
Sent: 12 April 2002 14:22
To: [log in to unmask]
Subject: Carbon dioxide at fertilser works
Hello everyone,
can anyone profer any advice on carbon dioxide analysis.
There are two sets of results, one which are absolute readings and
the other are steady state readings. The steady state readings are
lower than the absolute readings and the consultant is using them
to negate the need to carry out remedial measures at a housing
development on an old fertiliser works.
I hope all goes well with everyone.
Many thanks
Clare
Clare Horton
Authorised Officer (Contaminated Land), Environment & Property Department
4th Floor
St. Nicholas House
Broad Street
Aberdeen AB10 1BX
01224 523781 fax. 01224 647333
This message is not intended to have contractural effect.
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