Jack Lemley has prematurely left his post as Chairman of London Olympic Delivery Authority (ODA), in charge of procuring infrastructure and venues for the 2012 Games. "I am keen to return to the helm of my international construction consulting firm in America, which is increasingly busy with major contracts," says Lemley.

Lemley took up the post only last November, when he forecast going part-time after an initial busy setting-up period. As recently as this August, when ODA appointment its project management team, Lemley was still talking of his long-term commitment to the Games. Lemley is principal of Lemley and Associates, Boisie, Idaho. He is being replaced temporarily by his deputy, Roy McNulty, former Chairman of the Civil Aviation Authority.

Lemley sent a statement to ENR, saying that he felt he had completed the work he set out to do at ODA. He dismissed rumors that he faced health problems or that he had differences with ODA board. He reported that he had decided to come home because his firm has other big projects, and it is time to focus on those.