The Enhancement and Conservation of the National Environmental Quality Act B.E. 2535 ( NEQA 1992) (1 file) (in Thai) Air Pollution and Noise Regulations (104 files) (in Thai) Water Pollution Regulations (81 files) (in Thai) Soil Quality Standards (1 file) (in Thai) Wast and Hazardous Substances Laws (3 file) (in Thai) Pollution Control Officers and Government Official (32 files) (in Thai) Pollution Control Area Establishments (10 files) (in Thai) Other Related Laws (13 files) (in Thai) Pollution Control Department Regulations for Public Information (7 files) (in Thai) The Draft Regulations for comments from the relevants ( 28 files) (in Thai)