This image shows the completed Dissolved Oxygen Injection Plant on Hutchinson Island in Savannah Georgia, May 29, 2019. This is one of two plants that make up a single dissolved oxygen system designed and construction as an environmental mitigation feature of the Savannah Harbor Expansion Project, known as SHEP. The other plant nears completion upstream near Plant McIntosh. Injecting super-oxygenated water into the Savannah River helps mitigate for the loss of oxygen as the harbor is deepened from its current 42 feet to 47 feet. The SHEP will benefit the American economy by a ratio of 7.3 to 1. That means for each $1 spent on deepening the harbor, the U.S. economy will see a net benefit of $7.30, or a net benefit of $282 million per year. U.S. Army photo by Russell Wicke