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The fact that nothing has happened to date is in fact quite a good indicator of the likely risk posed by gas. However it should not be relied upon on its own. Where there has been a real risk from gas there have always been other indicators before explosions occurred. Steve Wilson, Technical Director EPG Limited Tel 07971 277869 www.epg-ltd.co.uk -----( Disclaimer )----- > > Information contained in this e-mail is intended for the use of the addressee only, and is confidential and may contain commercially sensitive material. Any dissemination, distribution, copying or other use of this communication, other than for which it is explicitly intended, without the permission of the sender is strictly prohibited. If you have received this e-mail in error, please advise the sender immediately and delete it from your system. Whilst all e-mails are screened for known viruses, the company cannot accept responsibility for any which have been transmitted. _____ From: Contaminated Land Management Discussion List [mailto:[log in to unmask]] On Behalf Of Owen Lewis Sent: 29 May 2009 16:42 To: [log in to unmask] Subject: Re: Planning Condition Leigh, I think that this is a valid concern. Just because there has been no incident to date does not guarantee that there will be no problem in the future. Including ventilation in the foundation design will reduce the increased risk from capping. Owen _____ From: L.Warhurst [mailto:[log in to unmask]] Sent: 29 May 2009 16:31 To: Owen Lewis; [log in to unmask] Subject: RE: Planning Condition Owen and others, Scenario - existing property with no gas protection on land where there is concern about risk from gas. No gas monitoring but no incidents either so some kind of equilibrium exists whereby minimal gas venting occurs over all of the site. Planning application for an extension, say "L shaped" along 2 elevations. If the extension is provided with gas protection measures then land along 2 elevations is effectively capped. This could change the gas regime and increase the risk of gas migrating into the existing property. Any thoughts ? Leigh Warhurst Ashfield District Council -----Original Message----- From: Contaminated Land Management Discussion List [mailto:[log in to unmask]] On Behalf Of Owen Lewis Sent: 29 May 2009 15:53 To: [log in to unmask] Subject: Re: Planning Condition Emma and others, We are considering the same issue. To some extent an extension to an existing property actually reduces the risk from harmful chemicals by covering the ground with an extended building footprint, although there is a potential risk to construction workers. An informative indicating the need for a watching brief would be a proportionate response if it can be justified. What does anybody else think? Where we are concerned about gas risks we condition for gas monitoring or protective measures and indicate that the latter may be cheaper for small developments. Regards, Owen -----Original Message----- From: Contaminated Land Management Discussion List [mailto:[log in to unmask]] On Behalf Of Emma Jones Sent: 29 May 2009 15:03 To: [log in to unmask] Subject: Planning Condition Dear all, I have a query that someone might of come across in there authority and was hoping for some help..... We have just adopted a constraint map for planning consultations and are getting applications for single storey extensions on houses that are built on potentially contaminated land. These houses have had no contaminated land investigations or remediation carried out on them, built pre 1960s and are on our Part IIa inspection list (too be investigtaed when we have time, money and resources). How can we put conditions on an application of this type without causing alarm to everyone and making the landowner spend huge amounts of money on desk study/invest etc? Any suggestions would be greatly appreciated. Thanks Emma ======================================================================= This email has been scanned for viruses and inappropriate content ======================================================================= Please consider the environment before printing this message. Hounslow Council routinely monitors the content of e-mails sent and received via its network for the purposes of ensuring compliance with its policies and procedures. The contents of this message are for the attention and use of the intended addressee only. If you are not the intended addressee, or the person responsible for delivering it to them, you may not copy, forward, disclose or otherwise use it or any part of it in any way. To do so may be unlawful. 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Visit www.nottsbothered.com ======================================================================= This email has been scanned for viruses and inappropriate content ======================================================================= Please consider the environment before printing this message. Hounslow Council routinely monitors the content of e-mails sent and received via its network for the purposes of ensuring compliance with its policies and procedures. The contents of this message are for the attention and use of the intended addressee only. If you are not the intended addressee, or the person responsible for delivering it to them, you may not copy, forward, disclose or otherwise use it or any part of it in any way. To do so may be unlawful. If you receive this e-mail by mistake please advise the sender immediately. Where opinions are expressed they are not necessarily those of the London Borough of Hounslow. This email has been scanned for viruses and inappropriate content.