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Following from Chris's e-mail, an FAO (UN) document "Wastewater treatment and use in agriculture - FAO irrigation and drainage paper 47" provides info regarding the thresholds allowed in sewage sludge used in agricultural land. They can be found on this link http://www.fao.org/docrep/t0551e/t0551e00.htm#Contents Kind Regards, Cila Gardner Mrs Ercilia Gardner BSc (Hons) CGeol FGS Principal Geo-Environmental Engineer RED ROCK GEOSCIENCE LTD East Wing, Station House, Broadclyst, Exeter, Devon EX5 3AS Tel 01392 460800 Mobile: 07557 412765 From: Contaminated Land Management Discussion List [mailto:[log in to unmask]] On Behalf Of Taylor, Christopher Sent: 08 May 2014 14:53 To: [log in to unmask] Subject: Interesting paper - cadmium-contaminated fertilisers Dear list members Thought you may find this paper interesting: http://ec.europa.eu/environment/integration/research/newsalert/pdf/371na2.pdf Regards Christopher Taylor Enforcement Officer Regulatory Services Brent Council Tel: 020 8937 5159 Fax: 020 8937 5150 www.brent.gov.uk -- 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.