The LEED 2012 third public comment period is now open from March 1-20, 2012 which marks the start of the LEED 2012 program delivery process. This third draft of the rating system is focused on providing a globally applicable, simple-to-use, technically advanced system. Members of the public can comment on any substantive changes made since the second public comment period, which ran from August 1 through September 14, 2011. Once the comment period process concludes, LEED 2012 will be balloted in June and launch in November. Important Dates March 1-20: Third Public Comment period is open April 2-May 1: LEED 2012 Ballot Opt-In Period for members in good standing June 1-30: LEED 2012 Ballot Voting Period Important Resources LEED 2012 FAQ's Third Public Comment Glossary Second Public Comment Responses   View responses & comments received in Second Public Comment LEED 2012 Credit Category Webcasts Location and Transportation Sustainable Sites Water Efficiency Energy and Atmosphere Materials and Resources Indoor Environmental Quality Letter from the LEED Steering Committee Chair Weightings FAQ   View common questions on the weightings point allocation process. Weightings Process Document   Learn about how the points in LEED 2012 are allocated. U.S. Green Building Council