Environmental impact studies for the Project were conducted in accordance with the Office of Natural Resources and Environmental Policy and Planning (“ONEP”, previously known as “Office of the Environment Policy and Planning or OEPP”) guidelines and consisting of a coordinated study involving SPS Consulting, the Department of Geotechnology at Khon Kaen University, NSR Environmental Consulting PTY LTD, Australia, and Environmental Geochemical International PTY LTD, Australia. The comprehensive program included ground water, soil mechanics, and soil profile studies, all of which were approved by the ONEP.

Prior to production baseline surveys on soil and groundwater properties were conducted by the Ground Water Research Center (GWRC) at Khon Kaen University. Since production began, the GWRC team has been conducting environmental site monitoring in accordance with ONEP and DPIM regulations

TKL’s staff and management are committed to sound environmental practices and compliance with all applicable laws and regulations during operations. In addition, TKL will initiate future rehabilitation of mined areas for suitable post-mining beneficial land use.