SC Green Schools & Sustainable Communities Summit
by Keith Sanders, AIA, LEED AP BD+C
LEED APs Facing Deadline for Enrollment
by Keith Sanders, AIA, LEED AP BD+C
LEED 2012 – Second Public Comment
Contributed by Keith Sanders, AIA, LEED AP BD+C
On August 1, USGBC opened the second public comment period for LEED 2012, the next version of the LEED Green Building Rating System. This public comment period, which is scheduled to close September 14th, is the next step in the continuous improvement process and on-going development of the LEED program. During the first public comment period, which opened in Nov. 2010, just under 6,000 comments and recommendations were collected on the proposed drafts. Updated LEED rating system drafts and responses to the comments are posted for review and comment. As indicated at the outset of the first public comment period, the credits in the proposed LEED 2012 Green Rating System have been allocated points based on a weightings process similar to the process used for 2009, but based on impact categories developed by USGBC specifically for use in LEED.
There are 10 categories in the draft LEED 2012 BD+C (formerly New Construction and Major Renovation), including:
· Integrated Process (IP)
· Location and Transportation (LT)
· Sustainable Sites (SS)
· Water Efficiency (WE)
· Energy & Atmosphere (EA)
· Materials & Resources (MR)
· Indoor Environmental Quality (IEQ)
· Performance (PF)
· Regional Priority
A Few Other key changes in the new LEED 2012 draft
The entire Integrated Process category is a new, first section (SS moves down). The first IP credit, Discovery – Analyses to Support Integrative Process (1 point), has changes since the first public review. The new version of this credit is much more cleanly worded, and is organized by topic—Energy Load Reduction, Water Systems, and Site Assessment—instead of phase (for example, “Iterative Analysis during Conceptual Design). Teams would have to complete analyses in all three categories, and identify ways to reduce environmental burdens.
Another new credit has been added to this section for the second public comment: Implementing Strategies (1 point). This credit appears to have evolved when the lengthy requirements for the previous IP credit (now Discovery) were slimmed down. This credit focuses on two key requirements. The first is an analysis of synergies based on assessments performed during “discovery,” and comparison of at least two alternate designs. The second is a commitment to use of ongoing feedback mechanisms during building occupancy.
Despite a lot of feedback against the change during the first comment period, a relevant specialty is still required in the new language for the LEED Accredited Professional credit (1 point)—a change from LEED 2009. However, a new requirement that additional team members be LEED credentialed has been dropped.
credit isn’t significantly changed in the new LEED 2012 draft, although it is allotted 1–6 points rather than 1–5 as in LEED 2009. Even with that increase in emphasis, the Exemplary Performance
path is allocated only 1–2 points (down from 1–3), while the Innovation path retains 1–5 points.
The draft includes some minor wording changes to the Regional Priority credit, but the overall intent and requirements are the same. As with LEED 2009, this draft allocates 1–4 points to Regional Priority.
The organizational revisions proposed for the IEQ section provide a more refined focus on air quality,
lighting and acoustics, in addition to improved incentives for testing and verification. The organizational
revisions proposed for the MR credit category reflect a strong desire to encourage life cycle based
thinking through manufacturing and product selection practices. In two new MR credits, which exist in
part to fill known gaps in the data used to support life cycle assessment, USGBC is tackling issues related
to responsible sourcing of raw materials and human health impacts associated with building products.
To learn more about the LEED 2012 development, including accessing the proposed drafts and supporting material, visit usgbc.org/LEED/development.
At USGBC's request, LEEDuser has set up a series of forums on the LEED 2012 draft. These forums are both a chance to register a public comment or comments on the draft, and a place to publicly discuss the draft. Questions and dialogue are welcome and encouraged!