CH2M Hill Plateau Remediation Co. Workers remove the east end of a highly contaminated tank in the 209-E Critical Mass Laboratory to provide access to two storage tanks as part of the facility's demolition. CH2M Hill Plateau Remediation Co. Crews spent two months developing mockups, even fabricating non-contaminated replica tanks, to insure safe demolition of 11 large tanks formerly used in weapons production experiments. With radioactive contamination saturating the 209-East Critical Mass Laboratory at the U.S. Dept. of Energy’s Hanford Nuclear Waste Site in southeast Washington, contractor CH2M Hill Plateau Remediation Co. needed new techniques to demolish the nearly 9,000-sq-ft
The 2016 Summer Olympics boating and swimming events have put an international spotlight on what has been a long-running problem in Rio de Janeiro—untreated sewage and trash are clogging up major bays and waterways.