According to the provisions of art. 5 of LR 42/1996 which provided for the delimitation of Areas of significant environmental interest (A.R.I.A.) to be subjected to detailed planning pursuant to LR 52/1991 (paragraph 4, art. 18) having regard to the presence of hydrogeological, environmental constraints , as well as sites of Community or national importance and not including parks, reserves or retrieval areas, the Offices of the Directorate of Territorial Planning have carried out a survey of the areas having natural value and from the considerations deriving therefrom in agreement with the then Regional Parks and Forests Company led, in June 1997, to the presentation of the Delimitation Proposal for 20 A.R.I.A. in the regional territory. These delimitations have been sent to the Municipalities with territories included in these perimeters in order to obtain the opinions constituting the agreement, according to the provisions of art. 5 mentioned above. Subsequently, following the requests and observations of numerous Municipalities regarding the planning methods, with art. 10 of Regional Law 13/1998 the provisions of art. 5 of LR 42/96, providing among other things that the A.R.I.A. once established, were subject to changes to the PRGCs instead of the detailed regional territorial plans, but including the obligatory nature of the "Technical Guidance Documents - DTI" in the legislation. The introduction of these legislative changes led to a new phase of consultations between Regional and Local Administrations which in the end made it possible possible the "Agreement" with the Municipalities concerned and therefore the establishment of a large part of the ARIA proposals.
