Hi, LEED Experts!

I am actually confused. With the requirements for Open Spaces, the guideline says that turf grass is not counted as a vegetated area. Then it says that the outdoor space should be one of the following... and lists several options, where turf area is mentioned. 

If the 25% of the open space area can not be turf grass, how come they suggest to have paving or turf area as an option?

Thank you in advance.