Thailand enacted the National Environmental Protection Act, B.E., 2535, in 1992, but there are a variety of other laws that prospective investors – particularly investors in property projects and factories – need to consider. Those laws include, among others, the Factory Act, the Town & Country Planning Act, the Hazardous Substances Act, the Construction Act, the Mineral Act and the Fuel & Oil Act. The laws and regulations in this area are complicated and sometimes overlap. Further, consistent with the growth of the Thai economy and the emergence of a larger middle class, Thai law, custom and practice is changing rapidly in this area, particularly in the area of zoning and new requirements for environmental impact assessment reports. There has been a trend towards stricter enforcement. Reflecting the stronger interest in environmental protection, there is now greater demand for environmental remediation expertise and products in Thailand.