Presidential Decree (PD) 1586 issued in 1978 provides that no person, partnership or corporation shall undertake or operate any such declared Environmentally Critical Project or area without first securing an Environmental Compliance Certificate (ECC). Environmentally Critical projects (ECPs) and Environmentally Critical Areas (ECA) were defined, in general, in Presidential Proclamation 2146 in 1981. In 1996, through Proclamation 803, Golf Course construction, development and operation was added to the list of ECPs.
In order to standardize the screening for ECC Requirement Coverage, detailed guidelines were issued. The Latest update is provided in EMB Memorandum Circular No. 2014-005 issued on 07 July 2014.