Chiltern District Council meets the legislative requirements for the review and assessment process through submitting the following documents to the Department for Environment, Food and Rural Affairs (DEFRA). Please select from the areas below: •Guidance on Review & Assessments •Stages 1 and 2 •Stage 3 •Updating & Screening Assessment 2003 •Progress Report 2004 •Progress Report 2005 •Updating & Screening Assessment 2006 •Detailed Assessment 2007 •AQMA Designation 2007 •Progress Report 2008 •Updating & Screening Assessment 2009 •Air Quality Action Plan 2010 •Progress Report 2010 •Detailed Assessment 2010 •Progress Report 2011•USA Report 2012•Progress Report 2013In line with the timescale for review and assessment, the next document to be submitted to DEFRA is the Action Plan update in 2014