If the industrial zone is within the city, DOC and PPC are involved as well. The overlapping of mandates, coupled with the lack of co-ordination has crippled effective implementation. The Decision has assigned each ministry to be responsible for the air quality resulting from the economic activities that they manage, and all ministries to be equally responsible for the implementation of this decision. However, no co-ordination mechanism across ministries such as an appointed focal point has been proposed, which tends to make the implementation more difficult.