... and on the flip side of what Ben has noted, there are plenty of sites where gas is not migrating at all.

Absolutely agree with Ben about RA, CSM, SI etc - I think the "250m theory" is one of the most misunderstood / abused in con land.

By the way - Ben, do you have a reference to the EA's 50m recommendation?

Jason.

Jason Drake, City of York Council.


-----Original Message-----
From: Contaminated Land Management Discussion List
[mailto:[log in to unmask]]On Behalf Of Ben
Crowther
Sent: 25 October 2006 09:42
To: [log in to unmask]
Subject: Re: 250m from Landfill


EA recomend no development within 50 metres, but I'm aware of gas migrating a mile or so - ICI Ellesmere port I think - not methane but... in a former sandy transmissable river bed, Its all down to Risk Assessment, conceptual models, SI and a lump of luck? (generally bad...)

By the way, anyone go to the CIRIA workshop on landfill gas analysis in Glasgow last week?,  Can I get a copy of the notes or (and this is to the Former MAPAC Girls and Boys) did you finialise a landfill gas risk assessment proocedure for everyone to benifit from?

Cheers


Ben 'cat-amongst-the pidgeons' Crowther.

Ben Crowther
Pollution Control Officer
Environmental Health Services
Calderdale MBC
Northgate House
Northgate

Halifax
West Yorkshire
HX1 1UN

Tel: 01422 392316

e-mail: [log in to unmask]


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>>> Paul Pearse <[log in to unmask]> 23/10/2006 14:31 >>>
Dear all


Seeing that the "250m from a landfill" is an arbitrary and outdated
concept, I would like to know what people condition about LFG put when
commenting on planning apps nowadays?


Cheers!


Paul Pearse
Environmental Control Officer
Planning, Protection & Licensing Colchester Borough Council
PO Box 889, Town Hall Colchester CO1 1FL
Tel: 01206 282592
Fx: 01206 282598


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