Hi All.

This is just a suggestion.

To achieving this credit the pre-development condition is no more the "existing site" we were talking about in v2009, but is now(LEED v4) the "natural land cover condition". It sounds similar but the treshold to reach is now very higher. Am i wrong?
I think it will be very expensive for the Contractors to set back the site's rainwater impacts to the Age of Stone.