If you have achieved SSc2, you can count the square footage of a green roof toward SSc5.2. Calculate the maximum square footage needed to gain both SSc5.2 and SSc7.2 - SSc6.1: Stormwater Design—Quantity Control.
Do you know which LEED credits have the most LEED Interpretations and addenda, and which have none? The Missing Manual does. Check here first to see where you need to update yourself, and share the link with your team.