A $48.5 million deal has been reached to establish a conservation easement on about 666 acres of land at Turtle Bay Resort on Oahu’s North Shore, saving portions of this land from future development forever, Hawaii state officials said Thursday. Gov. Neil Abercrombie and others, including leaders from the City and County of Honolulu, The Trust for Public Land and the Turtle Bay Resort, made the announcement at the state Capitol in Honolulu on Thursday. “As I said in my State of the State Address…