ENFORCEMENT DECREE OF THE CLEAN AIR CONSERVATION ACTENFORCEMENTDECREE OF THE CLEAN AIR CONSERVATION ACT Wholly amended By 1996· 8·31Presidential Decree No. 15143 Amended By 1997·12·31Presidential Decree No. 15583 Amended By 1998·12·31Presidential Decree No. 16054 Amended By 1999·10·13Presidential Decree No. 16576 Amended By 2000· 7· 1Presidential Decree No. 16891 Amended By 2000· 8·17Presidential Decree No. 16953 Amended By 2002· 8· 8Presidential Decree No. 17698 Amended By 2002· 8· 8Presidential Decree No. 17703 Amended By 2003· 6·30Presidential Decree No. 18042 Amended By 2003·12·11Presidential Decree No. 18157 Amended By 2004· 3·17Presidential Decree No. 18312 Article 1 (Purpose) The purpose of thi...