Leading professional technical and management support services provider has been awarded a contract for the construction management of DC Water's Enhanced Nitrogen Removal Program in Washington.

AECOM's total fees are approximately US$40 million during the five-year contract.Under the contract, the company will provide construction-management services associated with projects at the nitrogen removal facilities at the city's 370-million-gallon-per-day Blue Plains Advanced Wastewater Treatment Plant.

The construction projects included in the approximately US$300-million program involve enhanced nitrogen-removal facilities, centrate-treatment facilities, Phase II gravity-thickener upgrades, plant-wide fine-bubble aeration and several other smaller projects.

The new contract was awarded in addition to a recent US$19.5-million supplement to AECOM's Nitrogen Removal Program Management contract at the same plant. The project is due for completion in 2016.