WOOD Green Animal Shelters is set to undergo a £3.5million revamp. Plans have been drawn up to build a new surgery, isolation and puppy kennels. The site will also benefit from the introduction of more green technology and plans have been ­submitted to Huntingdonshire ­District Council to build a nature trail and outdoor classroom. The 52-acre site in ­Godmanchester has developed slowly since its ­opening in 1984 but what were once state-of-the-art facilities are dated. With 40 per cent of animals ­coming into Wood Green needing some kind of medical treatment, the plans include four main focuses: a hospital unit, surgical unit, clinical exam unit and a public reception. The surgery at ­Godmanchester has barely altered since it was built and staff are ­struggling to cope with the pressures of caring for all the animals that come into the shelter. Chief executive Dennis Baker said three-quarters of the funding for the work was in place but they were relying on public donations to make up the shortfall. He said: The surgery forms one of the most important parts of the work we do. We save animals lives and keep them healthy. The new isolation kennels will not have metal bars but will have glass fronts. They will also be staggered, so that the dogs cannot see each other, reducing stress and ­frustration. Sharon Evans, director of ­fundraising and communications at Wood Green, said: With the generosity of our supporters and legacies bequeathed to the charity, we hope to start work on this exciting new project in the spring of 2011. The wind turbine, installed about 20 years ago, will be replaced with a more powerful turbine the power will be used at the site directly instead of feeding the national grid. The site will be transformed over the coming five years with the ­introduction of various renewable and environmentally-friendly ­technologies, including solar water heating and rainwater harvesting, as well as the introduction of ­composting toilets and solar heated showers.