Tax exemption under the Income-tax Act: specification for a sustainable development project extended for a further two-year period. The Central Government specifies the sustainable development project carried out by Cohesion Foundation Trust in disadvantaged areas of Gujarat as an eligible project for tax exemption, and-following the National Committee's recommendation that the project is being properly executed-extends the specification for a further two-year period beginning with financial year 2007-08 without any change in the approved project cost.