• (c) Savannah District, U.S. Army Corps of Engineers

file under: Environment, Federal Government, United States

U.S. Corps of Engineers Selects CDM Smith to Build Innovative Speece Cones as Part of Savannah Harbor Expansion

August 03, 2015

SAVANNAH, Ga.—The Savannah District, U.S. Army Corps of Engineers has awarded CDM Smith a $99.6 million contract to build the dissolved oxygen injection system as part of the Savannah Harbor Expansion Project, known as SHEP.

The dissolved oxygen injection system, an environmental mitigation feature of the SHEP, involves installing, operating and maintaining 12 devices called Speece Cones. These devices inject oxygen into the river to maintain necessary dissolved oxygen (DO) levels during hot, dry months, when oxygen levels typically drop. Studies show that the planned DO injection system will sustain oxygen levels in the estuary during and after the deepening.

The deepening will enable larger container ships to call on Savannah with greater ease, heavier cargoes and fewer tidal restraints than they currently experience. The Corps of Engineers partnered with the State of Georgia for the deepening, which brings a net benefit of $174 million each year to U.S. consumers in transportation cost savings and greater efficiencies. Each dollar invested in the SHEP will return $5.50 to the economy.

Other project components include the dredging the outer harbor; recovering the CSS Georgia, an historic Civil War ironclad that has rested some 40 feet below the river’s surface for more than 150 years; and creating a water storage impoundment to protect the integrity of the city of Savannah’s water supply.

CDM Smith provides lasting and integrated solutions in water, environment, transportation, energy and facilities to public and private clients worldwide. As a full-service engineering and construction firm, we deliver exceptional client service, quality results and enduring value across the entire project life cycle.