In energy and air: the geographic-based instrument for planners and decision-makers which present an evaluation of the environmental quality and carrying capacity of an area. It is the result of the integration of primary and secondary data and information on natural resources and anthropogenic activities on the land which are evaluation by various environmental risk assessment and forecasting methodologies that enable the Department [of Environment and Natural Resources] to anticipate the type of development control necessary in the planning area [Section 5(g), Philippine Clean Air Act of 1999]