This is a complex, multi-part question. An airport project is being phased and has multiple contracts. The scope includes replacing the runways and concrete around the terminals. This is one contract with the DOT. The second contract is a new concourse, that essentially doubles the size of the airport. The third contract is adding roof-mounted PV system and microgrid. The entire project is designed by the same design team (1 contract). It is my understanding that the entire scope of work , regardless of the contracts, must be included in the LEED boundary, and not simply "just" the one contract for the terminal. This being said, how does the project comply with, "The gross floor area of the LEED project should be no less than 2% of the gross land area within the LEED project boundary?" It is also my understanding that the entire airport (existing concourse + the new concourse), which may or may not include the renovation of the existing concourse, which has not yet been decided, needs to be included in the LEED project boundary. The new concourse will have new mechanical equipment, however it is tied into the existing mechanical system. My question is that the entire building (existing + new) must be certified, and not just the addition. Is this correct?