The Olympic Delivery Authority said that small samples of asbestos-containing material had been discovered at the east London. It added that work on the foundations, which Keller is carrying out, had been stopped as a precautionary measure.
The ODA’s head of health and safety Lawrence Waterman said: “We are working with the relevant authorities and expect work to re-start progressively as protective measures are put in place over the next few days.”
Meanwhile, the ODA has said that construction work on its showpiece £300 million aquatics centre will start later this month.
News that main contractor Balfour Beatty will begin work on the Zaha Hadid-designed scheme ahead of schedule comes after ODA disputed reports that the roof of the venue is too complicated to be built.
The roof will be made of steel with an aluminium cladding with timber being used for the internal ceiling of the venue and the sides of the roof supports.
The ODA said that the timber selected will be tested for up to a year to make sure it works for both the Games and legacy before it is fitted in 2010.
Engineer Arup and Balfour Beatty will oversee the testing. ODA aquatics centre project sponsor John Nicholson said: “As is standard on any project we are progressing the detailed designed development which includes considering a range of materials for particular elements, such as timber cladding.”