sentences:  Construction on the camp and the sub-glacial nuclear reactor began without explicit permission from the government of Denmark, leading to a political dilemma for Prime Minister H. C. Hansen.In 2016, a group of scientists evaluated the environmental impact and estimated that due to changing weather patterns over the next few decades, melt water could release the nuclear waste, 200,000 liters of chemical waste and 24 million liters of untreated sewage into the environment.However, as of 2016, neither the US nor Denmark had taken responsibility for the clean-up.