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Beside the canals boaters leave little piles of ash from their wood/coal fires. This little pile was from a fire that uses mainly coal and I sampled it. Every one of the 16 EPA priority PAHs was below the limit of detection (<0.08mg/kg). I have a feeling this may vary according to the type of coal used though. I have another coal ash sample currently being analysed in ESG’s lab – if it shows something different I will let you know! [cid:image002.jpg@01D07C16.66B88D80] Karen Jackson Senior Environmental Scientist North West, Manchester and Pennine & North Wales and Borders Waterways M. 07917 185840 Canal & River Trust, Red Bull Depot, Congleton Road South, Church Lawton, Stoke, ST7 3AP Please visit our website to find out more about the Canal & River Trust and download our ‘Shaping our Future document' on the About Us page / Ewch i http://www.canalrivertrust.org.uk/cymraeg i ddysgu mwy am Glandŵr Cymru ac i lawrlwytho ein dogfen ‘Llunio ein Dyfodol' ar y dudalen Amdanom ni. -----Original Message----- From: Contaminated Land Management Discussion List [mailto:[log in to unmask]] On Behalf Of Taylor, Christopher Sent: 21 April 2015 09:17 To: [log in to unmask] Subject: Re: Wood ash vs coal ash I think it's the potassium they are after. I know the main source of potash these days is from mined marine deposits. I just have concerns regarding the PAHs, and the accumulation of PAHs from constant burning and spreading ash over the years. Regards Christopher Taylor Enforcement Officer Regulatory Services Brent Council Tel: 020 8937 5159 www.brent.gov.uk<http://www.brent.gov.uk> -----Original Message----- From: Contaminated Land Management Discussion List [mailto:[log in to unmask]] On Behalf Of Clive Williams Sent: 21 April 2015 09:01 To: [log in to unmask]<mailto:[log in to unmask]> Subject: Re: Wood ash vs coal ash I would imagine the conc of PAH would be much higher in coal ash given the massive concentration factor in a 1m seam of coal coming from up to 30m of plant stuff depending on the type of coal. What is the benefit of wood ash spreading, is it the phosphorous? that you can extract from wood ash by soaking it. Cheers Clive -- The use of Brent Council's e-mail system may be monitored and communications read in order to secure effective operation of the system and other lawful purposes. ________________________________ The Canal & River Trust is a new charity entrusted with the care of 2,000 miles of waterways in England and Wales. Get involved, join us - Visit / Donate / Volunteer at www.canalrivertrust.org.uk - Sign up for our newsletter at www.canalrivertrust.org.uk/newsletter Canal & River Trust is a charitable company limited by guarantee registered in England & Wales with company number 7807276 and charity number 1146792. Registered office address First Floor North, Station House, 500 Elder Gate, Milton Keynes MK9 1BB. Elusen newydd yw Glandŵr Cymru sy’n gofalu am 2,000 o filltiroedd o ddyfrffyrdd yng Nghymru a Lloegr. Cymerwch ran, ymunwch â ni - Ewch i Rhoddion a Gwirfoddoli yn www.glandwrcymru.org.uk Mae Glandŵr Cymru yn gwmni cyfyngedig drwy warant a gofrestrwyd yng Nghymru a Lloegr gyda rhif cwmni 7807276 a rhif elusen gofrestredig 1146792. Swyddfa gofrestredig: First Floor North, Station House, 500 Elder Gate, Milton Keynes MK9 1BB.