 Koperberg resigned from the New South Wales Ministry on 22 February 2008, citing ill health.But an unnamed source close to Koperberg, cited in "The Sydney Morning Herald", said that the real reason for his resignation from the ministry was that he was fed up with continuing unsubstantiated allegations being promulgated by his party colleague, Blacktown MP, Paul Gibson.Verity Firth took over as Minister for Environment and Climate Change and Nathan Rees as Minister for Water.