EMRAS 2 EMRAS 2 Working Group 1 Working Group 1 Legacy Sites and - PowerPoint PPT Presentation

EMRAS 2 EMRAS 2 Working Group 1 Working Group 1 Legacy Sites and NORM Legacy Sites and NORM NORM NORM

Scenarios Scenarios Scenarios Scenarios Data Data Assessed Assessed Megalopolis Greece Yes Yes Megalopolis Greece Yes Yes Kavala Greece Yes No Kavala Greece Yes No Gela Gela Italy Italy Yes Yes No No Los Gigantes Los Gigantes Argentina Argentina Yes Yes No No Spain Yes Yes Spain Yes Yes Katowice Poland private company No Katowice Poland private company No a) Settling pond (covered) own data a) Settling pond (covered) own data b) Settling pond (not b) Settling pond (not covered) covered) c) Pipeline with scale c) Pipeline with scale Sillamä äe e Sillamä äe e Yes No Sillam Sillam Yes No Belgium Yes No Belgium Yes No AREVA France Yes No AREVA France Yes No

Models available within group Models available within group � CROM � CROM � PC � PC- -CREAM CREAM � RESRAD � RESRAD- -OFFSITE OFFSITE � PRESTO � PRESTO � COMPLY � COMPLY � (Radon code) exhalation into buildings � (Radon code) exhalation into buildings

Modelling tools available Modelling tools available � AMBER � AMBER � ECOLEGO � ECOLEGO � MODELMAKER � MODELMAKER Assessment tools available Assessment tools available � ERICA � ERICA

Application of Features Events Application of Features Events ProcesseS Analysis Analysis ProcesseS � Gela � Gela � Kavala � Kavala � All other scenarios � All other scenarios

September, 2009 VIENNA

Gela Gela � Features Features – – waste, surface water, ground water, soil waste, surface water, ground water, soil � types, rock types, atmosphere, plants, humans, types, rock types, atmosphere, plants, humans, engineered barriers engineered barriers � Events � Events – – earthquake, flood, fire, intrusion earthquake, flood, fire, intrusion � Processes Processes – – leaching, groundwater flow, surface flow, leaching, groundwater flow, surface flow, � erosion, resuspension, transfer to plants, irrigation erosion, resuspension, transfer to plants, irrigation � Specific features: � Specific features: � � Retaining wall around the site Retaining wall around the site – – penetrates about 3 m into the penetrates about 3 m into the underlying clay underlying clay � � Leachate is returned from the downstream sampling wells to the Leachate is returned from the downstream sampling wells to the top of the stack top of the stack

Characteristic matrix – – Gela Gela Characteristic matrix atmosphere rain infiltration infiltration inhalation evaporation surface water infiltration infiltration infiltration irrigation ingestion exhalation erosion, flooding waste leaching leaching ingestion resuspension flooding barrier leaching leaching leaching uptake percolatio soil water adsorption uptake n well, sampling well groundwater ingestion breakthrough adsorption soil uptake ingestion food chain ingestion exhalation excretion humans

FEPS analysis FEPS analysis Waste repository Derive matrix and Waste repository Derive matrix and feedback feedback Waste repository - uncovered uncovered Derive matrix and Waste repository - Derive matrix and feedback feedback Gela Derive matrix and Gela Derive matrix and feedback feedback Tailings dam Tailings dam Derive matrix and Derive matrix and feedback feedback Stack discharge Derive matrix and Stack discharge Derive matrix and feedback feedback

Tasks and timetable Tasks and timetable � Scenario descriptions – – Jan 2010 Jan 2010 � Scenario descriptions � � Scenario data Scenario data – – ongoing ongoing � � Outline of assessment methodology – – Jan 2010 Jan 2010 Outline of assessment methodology � Apply FEPS to all real scenarios – – Jan 2010 Jan 2010 � Apply FEPS to all real scenarios � Preliminary modelling if available models are suitable – – Jan 2010 Jan 2010 - - ongoing ongoing � Preliminary modelling if available models are suitable � � Model development (based on FEPS analysis) Model development (based on FEPS analysis) - - ongoing ongoing � � Draft report sections as appropriate Jan 2010 – – ongoing ongoing Draft report sections as appropriate Jan 2010 � New scenarios - - ongoing ongoing � New scenarios

Final outcomes Final outcomes � Advice to regulators and operators � Advice to regulators and operators � Assessment methodologies/Remediation strategies Assessment methodologies/Remediation strategies � � � Application to specific site Application to specific site � Most important transfer parameters � Most important transfer parameters � sensitivity analysis sensitivity analysis � � Most important variables � Most important variables � Monitoring programs � Monitoring programs � � Feedback from/to modelling Feedback from/to modelling � � What to measure What to measure � Where to measure Where to measure � � � Consistency with (existing) safety standards Consistency with (existing) safety standards

Events – – possible treatment possible treatment Events � Events (flood, earthquake) modify site � Events (flood, earthquake) modify site characteristics characteristics � Run model with and without modified � Run model with and without modified characteristics characteristics � Compare results � Compare results