Leighton Asia in joint venture with Leonhard Nilsen & Sonner AS (LNS) has been awarded a contract by the Hong Kong Drainage Services Department for the construction of a sewage conveyance system from Aberdeen to Sai Ying Pun on Hong Kong Island.

The project is part of the Hong Kong Government’s Harbour Area Treatment Scheme (HATS) which is a world class sewage collection and treatment infrastructure which will restore Hong Kong’s harbour to a more natural and healthier condition.

Works to be undertaken include the design and construction of 7.5 kilometres of deep sewage tunnels. The tunnels will be constructed using drill and blast techniques within situ concrete linings at depths ranging from 70 metres to 120 metres. Twin oval sewers with sizes ranging from 1.38 to 1.65 metre equivalent diameter will be installed in the tunnels.

The project will play a role in improving environmental standards in Hong Kong.