1.Original 14 articles promulgated by Environmental Protection Administration order on November 30, 1992;
2.revisions to Article 3
3.promulgated on August 6, 1997; revisions to Articles 1, 11, and 13 promulgated on April 7, 1999
4.Revisions to Article 8, Tables 1 and 2, Article 10, the deletion of Article 9, and the addition of Artilce 12-1 promulgated on December 25, 2006.