Contractors are still waiting for Abu Dhabi Sewerage Services Company (ADSSC) to award the estimated AED2bn ($572m) contract to build a pumping station as part of its strategic tunnels enhancement programme.

Brazil’s Odebrecht is understood to be the frontrunner for the contract, for which four groups submitted bids in January 2010 (MEED 7:1:10).

The other bidders are the local/Australian Al-Habtoor Leighton Group; Germany’s Ed Zueblin; and Kuwait’s Kharafi National with Lindenberg-Emirates and the local/Lebanese Arabian Construction Company (ACC).

ADSSC has now awarded the three construction contracts for the tunnels programme. Italy’s Impregilo won two contracts, while South Korea’s Samsung C&T won the other. The programme will transport sewage from Abu Dhabi Island to treatment plants at Al-Wathba.

US-based CH2M Hill is the programme manager for the scheme.