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Credit language straight from USGBC
Need to check up on the exact LEED credit language from the LEED Rating System on the fly? LEEDuser includes the verbatim language. Members get:
- Easy access to the official LEED credit language with just a couple of clicks.
- On the jobsite without your bulky LEED Reference Guide? Check up on the credit language details here.
- Credit language content is used by permission of the U.S. Green Building Council.
- Rating System EBOM 2009Existing Building Operations
- Rating System SSSustainable Sites
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Rating System
SSc6Stormwater Quantity Control
- SSc1LEED Certified Design and Construction
- SSc2Building Exterior and Hardscape Management Plan
- SSc3Integrated Pest Management, Erosion Control, and Landscape Management
- SSc4Alternative Commuting Transportation
- SSc5Site Development—Protect or Restore Open Habitat
- SSc6Stormwater Quantity Control
- SSc7.1Heat Island Reduction—Nonroof
- SSc7.2Heat Island Reduction—Roof
- SSc8Light Pollution Reduction
EBOM 2009 SSc6: Stormwater Quantity Control
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4 Comments
2-Year, 24 Hour Storm Data
I have found that storm data is not widely available or accessible - Has anyone found a good source?
Jenny Carney replied Director, YRG sustainability Jul 31 2009
The best resource we've found is NOAA's Hydrometeorological Design Studies Center Precipitation Frequency Data Server: http://hdsc.nws.noaa.gov/hdsc/pfds/
For some states, the site allows you to navigate to a specific locale and generates a table of rainfall intensities, including for the 2-year 24-hour design storm. For the other states, it lets you download isopluvial maps. We'll post more info soon about how to use the tool / read the maps, but either way this resource has the data you need for any US-based project.
15% Runoff determination
I want to be clear on the definition of the 15% reduction of runoff. Does this mean a 15% reduction in runoff assuming the entire property is hardscape and then you create areas or schemes to reduce runoff by 15%?
Thank you for any information.
Mark
Tristan Roberts replied Editor – LEEDuser, BuildingGreen, LLC Mar 08 2010
Mark, you have the right general idea. To quote the credit language (shown above):
Implement a stormwater management plan that infiltrates, collects and reuses runoff or evapotranspirates runoff from at least 15% of the precipitation falling on the whole project site both for an average weather year and for the 2-year, 24-hour design stormA 2-year, 24-hour design storm is a nationally accepted rate that represents the largest amount of rainfall expected over a 24-hour period during a 2-year interval. The rate is the basis for planning and designing stormwater management facilities and features..
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