Forum discussion
NC-2009 SSc6.2: Stormwater Design—Quality Control
I would like to know what determines the site boundary for capturing the 90% anual rainfall total. Does the treatment area have to be the entire site boundary?
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Nadia Ayala
Architect / LEED AP BD+CKILTIK Consultoría
52 thumbs up
April 18, 2013 - 5:12 pm
Hi Antwon,
Yes, you have to consider the entire LEED boundary to perform your calculations. You have to take into account what kind of surfaces are there in your site and their runoff coefficients, and make your calculations in proportion to the area covered by each type of surface.