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Dear Kevin I can't comment on the landfill gas, but I can tell you that the extent of the chalk pit shown on the map may not be correct. A while ago, I investigated an infilled chalk pit expected to be a certain size and likely to be investigateable with a JCB (so maximum 3-4m deep). Trenching to locate the edges of the pit, revealed an old topsoil and a much larger pit which had been infilled at intervals with a variety of rubbish. I can't remember how far the actual edges of the pit were compared to what was shown on the map but it could have been 50m or more. In the end we had to get a Himac in - the pit ended up being 7m+ deep and we unearthed a car. So whatever they "officially" filled the pit with, there could have been some unofficial filling prior to that. Judith ________________________________ From: Contaminated Land Management Discussion List [mailto:[log in to unmask]] On Behalf Of L.Warhurst Sent: 20 May 2009 10:21 To: [log in to unmask] Subject: Re: Landfill Gas Hi Kevin, We have an infilled railway cutting (in limestone, probably fissured) where a Waste Disposal Licence was granted to the site operators in 1977 giving permission to deposit building rubble and excavation material not containing any combustible or putrescible material or any other waste likely to cause a nuisance or pollution. However, intrusive investigations carried out during the past 5 years have revealed areas containing ash, clinker, plastic, wood, paper, clothing and other non-inert waste. Gas monitoring has recorded localised pockets of methane over 50% and carbon dioxide up to 20%. Regards, Leigh Warhurst Environmental Protection Technician - Land Ashfield District Council Urban Road Kirkby in Ashfield NG17 8DA Direct line 01623 457477 -----Original Message----- From: Contaminated Land Management Discussion List [mailto:[log in to unmask]] On Behalf Of Kevin Beer Sent: 18 May 2009 14:30 To: [log in to unmask]<mailto:[log in to unmask]> Subject: Landfill Gas Hi all, I have a site that has come through the planning process where the applicant wants to build a new property approx 100m from an infilled chalk pit. The applicant states the pit was infilled with inert clay material, however we have no way of knowing this for sure. In order to give us more weight in our argument I was just wondering if anyone has any examples of where someone has said a pit or quarry has been infilled with apparently inert material only for a site investigation to show that it is giving off elevated gas concentrations? I have a feeling there was a part IIA site from a couple of years ago where there was a similar situation?? Many thanks Kevin Kevin Beer Contaminated Land Officer Community Protection Basingstoke & Deane Borough Council Civic Offices, London Road, Basingstoke, Hants, RG21 4AH Tel: 01256 845520 Fax: 01256 845200 email: [log in to unmask]<mailto:[log in to unmask]> __________________________________________________________________ Any views or opinions presented are solely those of the sender and do not necessarily represent those of Ashfield District Council unless otherwise specifically stated. Please note that Ashfield District Council reserves the right, subject to compliance with legislation, to monitor emails sent or received. Under the Freedom of Information Act 2000 and other relevant legislation, the contents may have to be disclosed in response to a request for information. Printing this email? Please think environmentally and only print when essential. Thank you. www.ashfield-dc.gov.uk<http://www.ashfield-dc.gov.uk> Choose your County Council. Vote on 4th June. Visit www.nottsbothered.com<http://www.nottsbothered.com>