The source? If you understand Italian (I do comprehend a bit), look
here. The main sense: A new civil airport in Viterbo will replace the Ciampino airport in 2011 and within the next 15 years will serve 12 million passengers a year. When the new airport in Viterbo opens it will intercept all the current 5 million passengers from Ciampino, the latter will be used only for the institutional and private flights.