6/16/2014 · Clark Green City. Clark Green City (CGC) will be “the country’s first smart, green, and disaster-resilient metropolis,”.This is according to BCDA president and chief executive officer Arnel Casanova, as mentioned in an article from Sun.Star Pampanga.. It will be composed of 36,000 hectares, of which 9,450 hectares will be developed as a metropolis.