Take a look at each of the three Sustainability Rating Systems:

US Green Building Councils LEED (usgbc.org/leed),

the ASCE-supported Institute for Sustainable Infrastructure’s ENVISION (sustainableinfrastructure.org/envision/), and

the FHWA’s INVEST program for sustainable roads (https://www.sustainablehighways.org)

Choose ONE and In memo format, describe (in one to two pages if possible) the chosen sustainability rating system. What does it cover? How does it work? What are the positives and negatives of this rating system?