…We are extremely concerned about severe environmental impacts, including transboundary impacts in neighbouring countries, resulting from the Lower Sesan 2 hydropower dam in Stung Treng Province, Cambodia…[N]o information has been made available to affected communities and the public regarding the proposed design changes, mitigation measures, or the operation plans for these measures…Despite the unresolved issues, pre-construction work is forging ahead on the project at a rapid pace…The EIA…failed to accurately assess the severe threats to food security, livelihoods, nutrition and health and to local and indigenous cultures and traditions, in Cambodia and the region, posed by this project…We call on the project developers and the Cambodian Government to: Release comprehensive details of proposed changes…Halt all construction on the project and conduct a new EIA…Conduct an informed and participatory decision-making process over whether the project should proceed…[Business & Human Rights Resource Centre invited China Huaneng Group, Royal Group & Vietnam Electricity to respond; they did not do so.]