Beckton Sewage Treatment Works is one of five wastewater treatment plants in the Thames Water network in the United Kingdom and the largest treatment plant in Europe. Headquartered in the London borough of Newham, it serves 3.7 million people, mainly in north and east London. As part of a $309 million upgrade to the Beckton plant, Thames Water engaged general contractor GBM to upgrade the plant’s odor control capabilities. GBM looked for a solution that would cap and contain the odor from the facility’s 16 primary sedimentation tanks while operating seamlessly with the equipment inside each tank. The company found the solution in custom-engineered flat aluminum covers supplied by CST Covers.