The November 2010 addenda release from USGBC included some additional highlights:
• Units of measurement clarification. Units of measurement must be submitted in U.S. Standard units of measure to facilitate review by U.S. reviewers. Not every unit of measurement on every construction or facilities document must be translated, but all those relevant to LEED compliance must be converted.
• SSc8 and flags. Flagpole lighting is not exempt from SSc8 shielding requirements for exterior lighting. This was already understood as true by experienced project teams, but now it's explicit.
• Return air no longer covered by IEQc1.4. To earn IEQc1.4, MERV 13 filters must be used at all outside air intakes—no spaces may be omitted. An addendum, however, removes a requirement for return air circulation to also have MERV 13 filtration.