Washington congressional leaders have some compelling evidence to make the case for a strong Hanford budget as they wait for a fiscal 2018 budget proposal from President Donald Trump’s administration. In the two weeks before the budget proposal is expected to be released Tuesday, the roof of a tunnel storing old, highly radioactively contaminated equipment collapsed at the nuclear reservation and then contamination was discovered that could indicate a 1970s-era underground waste tank may have an interior leak. “It is clear aging infrastructure and the waste contained within it continues to present a threat to the health and safety of the Tri-Cities community, the Columbia River, Washington state and our nation,” said a letter sent Friday to new Energy Secretary Rick Perry. It was signed by Sens.