An assessment is needed under the Environmental Assessment of Plans and Programmes Regulations 2004 (known as the ‘Strategic Environmental Assessment Regulations’).
Mae angen yr asesiad o dan Reoliadau Asesiadau Amgylcheddol o Gynlluniau a Rhaglenni 2004 (a elwir yn ‘Reoliadau Asesiadau Amgylcheddol Strategol’).