The Olympic Delivery Authority (ODA) has submitted one of the largest planning applications in European history, detailing plans for the Olympic Park.

The 15-volume, 10,000-page document outlines the plans for the construction of new venues, roads, drainage systems and power grids, including a wind turbine, on the east London site.

The original plans submitted in 2005 have been revised to make the park more compact and improve its integration – the media centres have been moved, and more consideration has been given to the adjacent Stratford City development.

Sebastian Coe, chair of LOCOG, said: "This is one of the biggest and most complex planning applications ever prepared in this country, and is another key milestone for us on the road to 2012."

The application has been separated into two core elements – the enabling and preparation work, including the installation of all the key infrastructure, including roads and river defence walls – and the Games' legacy and construction of sports facilities, to enable work to progress seamlessly.

The application follows a damning report this week from the National Audit Office (NAO) which said the government’s failure to set a budget for the 2012 Olympic Games is a “major risk” to its chances of success.

The report from the Whitehall financial watchdog came just a week after the cross-party Culture, Media and Sport Committee said that the Treasury would have to find extra money, as London taxpayers’ contribution was at its limits.

The cost of the infrastructure and preparation of the Olympic park has increased by £900m on original estimates, to £3.3bn, prompting criticism that the project is threatening to run out of control.

The report says “a robust budget would allow the programme to move forward with greater confidence, with a better basis for financial control.”

Other areas for concern highlighted were the need for a clear and quick decision making process, and ensuring that the Government Olympic Executive is given sufficient expertise and personnel to effectively oversee the project.