Stephen is the founding Director of Diomides & Associates Pty Ltd. He is an environmental scientist with over 45 years experience in environmental management and pollution control including 16 years of professional EPA experience in Victoria, and extensive experience and expertise as an environmental specialist in the assessment and clean up of contaminated land.
As the founding Director, Stephen has joint responsibility for all projects undertaken by Diomides & Associates, and his role in the company is in the planning and management of contamination assessment, site remediation, and environmental audit projects throughout Australia. He is engaged in the project management of contamination assessment and clean-up projects of all types involving current and former industrial sites including oil storage sites, gasworks, chemical works and electroplating workshops. He is also engaged in liaising and negotiating with EPA and other Government agencies, and the provision of expert evidence for VCAT hearings and various court cases.
1993-present
In 1993 as founding Director he established and subsequently developed the environmental consultancy - Diomides & Associates Pty Ltd.
1991-1993
In 1991, as Director, he established and subsequently developed the Environmental Division, Beveridge Williams & Co Pty Ltd, Victoria. Director responsible for contamination assessment, remediation and waste disposal projects throughout Victoria..
1990-1991
Senior Environmental Scientist, Golder Associates Pty. Ltd, Melbourne. Engaged in the planning and management of waste disposal and contaminant assessment projects throughout Australia.
1987-1989
Regional Control Officer. Environment Protection Authority, Geelong. Responsible for the assessment of complex works approval and licence applications and the supervision of staff engaged in pollution control activities within the south-west region of Victoria.
1985-1987
Executive Officer and Assistant Director, Rural Water Commission of Victoria. Responsible for direction of the Pollution Control Section and the Water Quality Management Section. Provided management for a wide range of monitoring projects and policies for the protection of surface water and groundwater resources.
1974-1984
Water Quality Officer, Senior Water Quality Officer and Principal Water Quality Officer, Rural Water Commission, Pollution Control Section. Responsible for direction of staff engaged in Pollution Control Activities under EPA delegation.
Costa is a director and a senior environmental scientist with Diomides & Associates Pty Ltd. He has approximately 20 years experience in environmental management and extensive experience and expertise as an environmental specialist in the assessment and clean up of contaminated land.
He has gained many years of professional experience as an environmental scientist and has extensive experience in the environmental consulting field since joining the company in 2001. He is an environmental specialist in contaminated site assessments, site groundwater investigations and site remediation management projects and he has been involved in numerous EPA environmental audit projects.
Costa has also been involved in numerous site remediation and site cleanup projects which in many cases have also been part of the EPA statutory environmental audit process. As a Director and Senior Environmental Scientist, Costa has joint responsibility for all projects undertaken by Diomides & Associates, and his role in the company is in the planning and management of contamination assessment, site remediation, and environmental audit projects throughout Australia. He is engaged in the project management of contamination assessment and clean-up projects of all types involving current and former industrial sites including oil storage sites, gasworks, chemical works, electroplating workshops, transport depots, warehouses, dry cleaning plants, plant nurseries and school sites.
