Chairman Capital Development Authority Tariq Mehmood called on Prime Minister Syed Yusuf Raza Gilani at Prime Minister House here this afternoon and briefed him about the progress on the ongoing and proposed development projects which are aimed at providing facilities to the people of Islamabad. The Prime Minister directed the Chairman to ensure timely completion of all the projects without compromising quality. He further directed him to ensure protection of environment while constructing bridges and roads. He asked the Chairman to plant more trees in order to make Islamabad greener and pollution free.