4000 newts move to Hackney?

This piece in the Builder and Engineer said the Olympic project included an: "An ecologic action plan to protect habitats and wildlife including translocating 4,000 smooth newts, 100 toads, 300 common lizards and create over 1 hectare of new wildlife habitat on Hackney Marshes."

So, apparently, all of these newts are being moved to Hackney to the new wildlife habitat - or have they been sent somewhere else? And why so many of them compared to toads and lizards?