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Highlights from the LEED-EBOM 2009 addenda

by LiveModern Webmaster last modified Jan 04, 2012 02:08 AM
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by Tristan Roberts last modified Jul 26, 2010

The U.S. Green Building Council (USGBC) has now released several sets of LEED addenda for LEED-EBOM 2009—corrections and changes to the rating system since its official release. The earliest of these start in November 2009, and the latest bat... It's 1994! Also in WEp1 , the pre-/post-1993 fixture baseline has been changed to pre-/post-1994. This only affects buildings with plumbing systems installed during 1993 or 1994, but it's good news for a 1994 building. This represents not a policy change in LEED, but a return to the original intent for this credit. What is landscaped area? WEc3: Water Efficient Landscaping had already allowed for sites with planters but not earthbound vegetation, but an addendum  makes the definition more specific: Calculation  “A site without vegetation or ecologically appropriate features on the grounds is eligible for this credit if its roof and/or courtyard garden space or outdoor planters constitute at least 5% of the total area. Project site viability is determined by calculating the portion of the total building site area covered with planters and/or gardens.” WEc4 division. WEc4: Cooling Tower Water Management already had two separate “options” but these have been redefined as credits: WEc4.1: Cooling Tower Water Management—Chemical Management, and WEc4.2: Cooling Tower Water Management—Non-Potable Water Use. The requirements are unchanged, but this change makes it a bit more obvious that one can pursue either or both credits. MRc2 division and clarification. Same thing with MRc2: Sustainable Purchasing—Durable Goods . The two options have become separate credits. MRc2.1: Sustainable Purchasing—Durable Goods, Electric-Powered Equipment, and MRc2.2: Sustainable Purchasing—Durable Goods, Furniture. Examples of electric-powered equipment have also been added to the credit language: “office equipment (computers, monitors, copiers, printers, scanners, fax machines), appliances (refrigerators, dishwashers, water coolers), external power adapters, and televisions and other audiovisual equipment.“ More EAc1 points. If you’re following Case 2, Option 2B under EAc1: Optimize Energy Performance , you can now earn nine points, not seven. You would be following this case if your building type is not eligible for Energy Star, and if you have three years of historical data. Benchmark change. With EAp2: Minimum Energy Efficiency Performance , there has been a subtle change in wording to the benchmark requirement. Twelve months of metered data is required for the building being certified, but not for comparable buildings being used as a benchmark. EP for MRc8. You can earn Exemplary Performance under MRc8: Solid Waste Management—Durable Goods . “Project teams can earn an additional point by diverting 95% or more of waste generated by durable goods from disposal to landfills and incineration facilities.” Carbon Trust gone. Since the Carbon Trust has removed its natural ventilation guide from publication, IEQc1.3: Indoor Air Quality Best Management Practices—Increased Ventilation no longer references it. CIBSE manuals are now exclusively used. Containment drains removed. IEQc3.5: Green Cleaning—Indoor Chemical and Pollutant Source Control had contained  a requirement for “containment drains plumbed for appropriate disposal of hazardous liquid wastes in places where water and chemical concentrate mixing occurs for laboratory purposes.” As LEEDuser had noted, this requirement was vague—how broad was the definition of “laboratory purposes” and how was it supposed to be documented? This requirement is removed. Pilot credits. A third path has been added to IOc1: Innovation in Operations . The pilot credit library now offers a path, in which project teams try out a new LEED credit and can earn a point under IOc1. LEEDuser has a dedicated section for the pilot credit library on its site . Unfortunately, none of the pilot credits available currently apply to LEED-EBOM. Some of these changes are new as of July, while some have been around for a while. They're all included here for your convenience. All the links above go to LEEDuser's guidance on the respective credits, which is fully up-to-date with the changes. Did you notice anything else interesting in the addenda? Please post it in the comments below. Stay tuned to this blog for highlights from the other LEED rating system addenda. Editor's note: Emily Catacchio performed much of the research for this article.






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