The aim of the Action was to promote further development and improved use of hazmat dispersion modelling in local-scale emergency response. The technological and socioeconomic challenge addressed by the Action was to lower threats resulting from accidental or deliberate hazmat releases at local scale by efficient use of dispersion modelling in emergency response. The Action established the first transnational European network of hazmat dispersion model developers, emergency response experts and stakeholders dedicated to local-scale threat scenarios from 19 COST countries and delivered (a) the first comprehensive dedicated model inventory; (b) benchmark datasets for model evaluation in emergency response application; (c) a strategy and means to visualize and verbalize strengths and weaknesses of hazmat dispersion modelling tools not sufficiently perceived by stakeholders and users yet and (d) practical guidance in the reliable use of available hazmat dispersion modelling methodologies. Ideas of revised concepts for local-scale hazmat dispersion modelling were drafted for initiating further model improvement concerted at European scale.
The Action has documented the potential for improvement of local-scale hazmat dispersion modelling, resulting from new simulation technologies such as microscale meteorological and atmospheric dispersion modelling and computational fluid dynamics. The scientific objectives of the Action were achieved by linking national research activities focusing on test and improvement of existing modelling tools, on model evaluation and last but not least focusing on provision of application-specific data truly qualified for a quantitative model validation. The first dedicated quality assured test data sets for model validation and to test numerous models under realistic blind-test conditions has been compiled.
Action results have been communicated to stakeholders in a series of Open Workshops. The Action members are replicators and multipliers for communicating Action results to end users and stakeholders at national level. The Action compiled an eTraining School to be brought to end users at national level by Action members.

Publications:
COST ES1006 – Background and Justification Document, COST Action ES1006, May 2012, ISBN: 3-00-018312-X
COST ES1006 – Best Practice Guidelines, COST Action ES1006, April 2015, ISBN: 987-3-9817334-0-2
COST ES1006 – Model Evaluation Case Studies, COST Action ES1006, April 2015, ISBN: 987-3-9817334-2-6
COST ES1006 – Model Evaluation Protocol, COST Action ES1006, April 2015, ISBN: 987-3-9817334-1-9
Efthimiou G.C., Andronopoulos S., Tavares R., Bartzis J.G. 2017. CFD-RANS prediction of the dispersion of a hazardous airborne material released during a real accident in an industrial environment, Journal of Loss Prevention in the Process Industries, 46, 23-36, DOI: https://doi.org/10.1016/j.jlp.2017.01.015
G. C. Efthimiou, S. Andronopoulos, J. G. Bartzis, E. Berbekar, F. Harms & B. Leitl (2017) CFD-RANS prediction of individual exposure from continuous release of hazardous airborne materials in complex urban environments, Journal of Turbulence, 18:2, 115-137, DOI: https://doi.org/10.1080/14685248.2016.1246736
G. C. Efthimiou, S. Andronopoulos, J.G. Bartzis (2018). Prediction of dosage-based parameters from the puff dispersion of airborne materials in urban environments using the CFD RANS methodology. Meteorology and Atmospheric Physics 130, pp. 107–124, DOI: https://doi.org/10.1007/s00703-017-0506-0