Garney Holding Garney Holding Co. (No. 23) crew pumps concrete for a water reservoir project in Centennial, Colo. for Denver Water. The project, designed by Brown & Caldwell (No. 36), is set to finish in 2015. Related Links: The 2014 Top 200 Environmental Firms-List and Market Analyses (ENR subscription only) Top 200 Environmental Firms 2014: Weeks Marine Finds Green Niches Collapse of Contractor Lakeshore TolTest Corp. Leaves a Messy Trail Spurred by the accelerating need for environmental services in the oil-and-gas boom and growth overseas, the Top 200 Environmental Firms, as a whole, managed to hike their revenue nearly 4%,
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.