I am working on a project who has two buildings in his land, but only one of them (an office building) will be in the process of becoming LEED NC. Both buildings are sharing the same parking and entrance to the street.

For the Erosion credit, as well as for the LEED site delimitation (we are also considering to maximize green spaces, etc) should I include all the project site or only delimited to the office building and a little bit around?

Thank you for helping.