In 2013, San Diego International Airport completed the largest improvement project in its history. The airport was awarded LEED Platinum certification from the U.S. Green Building Council. This made San Diego International Airport the first LEED Platinum certified commercial airport terminal in the world.
https://www.san.org/Airport-Projects/The-Green-Build
The Portland International Jetport terminal expansion is a 137,000 square foot addition, with a new ticketing hall, security checkpoint, concessions, four new gates, airline ticketing offices, baggage make-up, and a new in-line baggage handling system. The terminal is a complete transformation, making it a new gateway to the State of Maine, known for environmental stewardship and the beauty of its coastal and woodland natural environments.