With the "retain on site" verbiage is there no longer an option to retain off-site?  I have a project in a development that previous buildings have met the LEED 2009 stormwater quality and quantity requirements through use of a landscaped and ponds feature sized to handle stormwater for the entire development.  The central landscaping/ponds feature is not inside the LEED boundary of any past buildings, nor will it be for future buildings.