Construction is now underway on the Eton Manor site, marking the start of work on all Olympic Park permanent venues, the Olympic Delivery Authority (ODA) announced on Tuesday.

Eton Manor is a key Paralympic venue that will also deliver essential training facilities for athletes during the 2012 London Olympic Games.

Initial ground work started in the spring and work is now underway on building the permanent sporting facilities, with the foundations due to be completed by the end of the summer.

During the Olympic Games, Eton Manor will be an aquatics training venue, housing three Olympic-size temporary swimming pools, a temporary synchronised swimming pool and a temporary water polo pool. During the Paralympic Games, it will host the wheelchair tennis competitions with temporary seating for 10,500 spectators.

By the end of 2010, the main sports building structure will be complete. By the end of 2011, the five pools and the temporary structure which will house them will begin to be installed. The site will be ready by spring 2012 in time for LOCOG to stage test events.

After the Games, the permanent facilities will be transformed into a hockey center with two competition pitches, a tennis centre with four indoor and six outdoor courts, and provision for five-a-side football pitches.

The legacy facilities will be owned, funded and managed by Lee Valley Regional Park Authority (LVRPA) and will create a wide of mix of sporting facilities for the local and regional community as well as elite athletes.