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US EPA (USA): A Guide to the Biosolids Risk Assessments for the EPA Part 503 Rule.
Norwegian Scientific Committee for Food Safety (VKM) -2009 : Risk assessment of contaminants in sewage sludge applied on Norwegian soils.
INERIS CNRS (France) – 2014 : Emerging pollutants in sewage and composted sewage sludge; characterisation and risk assessment.
State of Virginia (USA) -2007 : Health effects of biosolids applied to land : available scientific evidence.
Department of Civil Engineering and Architecture, University of Catania ( Italy) – 2014 : Risk assessment of the use of biosolids containing emerging organic contaminants in agriculture.
To ensure risk control, analytical monitoring is performed annually on Biosolids and soils.