 It would also require developers to apply for a special exception if a data center is larger than 40,000 square feet in commercial zones and 80,000 in light and medium industrial zones. Some local residents have spoken out against the centers, saying they're bringing harmful noise and pollution if built too close to residential areas. There's currently a pending application for a data center that would be impacted by the vote, proposed to be built near Bryn Mawr Park in Franconia. Valerie Bonk, WTOP News.