Regional Planning and Development: Pollution Control Mrs. Lait To ask the Secretary of State for Communities and Local Government what assessment she has made of the likely effect on carbon dioxide emissions of the spatial planning decisions in each regional spatial strategy. Mr. Iain Wright All RSS revisions are accompanied by a sustainability appraisal which considers the social, environmental and economic impacts of implementing the strategy. This includes assessment of air quality and climatic factors, which will impact upon carbon emissions.