LONDON, ENGLAND - JANUARY 24: Slices of orange and studmarks are left next to the touchline of one of the Hackney Marshes football pitches on January 24, 2010 in London, England. Hackney Marshes is known as the home of grass roots football, it has 88 full-sized football pitches which is the greatest concentration of football pitches in Europe. The Olympic Delivery Authority is applying to build a giant wind turbine on the site of Hackney's East Marsh in a bid to fulfill the Games' environmental legacy.