These Regulations amend the Planning and Development Regulations 2001 mainly to provide for matters of procedure and administration in relation to Part XA and Part XAB of the Planning and Development Act 2000 (inserted by the Planning and Development(Amendment) Act 2010), which relate to applications for substitute consent and appropriate assessment of proposed development, respectively. These Regulations also contain a number of other new provisions in relation to environmental impact assessment (in particular in relation to environmental impact assessment of local authority and state development), and also in relation to cases where a planning application is not decided by a planning authority.