 The debate continued in 2007.Environmentalists also expressed concern over whether the proposed hydroelectric project at Athirappilly waterfalls would lead to displacement and eventual extinction of the primitive tribal group, `Kadars,' in the area.In 2005, the Kerala Ministry of Environment and Forests approved the project on the basis of a report by Water and Power Consultancy Services (India) Ltd. (WAPCOS), an environmental impact assessment (EIA) agency.