Forum discussion
NC-2009 SSc6.1: Stormwater Design—Quantity Control
Greetings
Our project is a 30 year old building undergoing a Major Renovation and will be registered as LEED-NC v2009.
In calculating pre- and post-development runoff, do we consider the pre-development conditions of the site 30 years ago when the building was originally constructed (greenfield) or the site conditions before the renovation (existing building and grounds)?
Thank you.
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Michael DeVuono
Regional Stormwater LeaderArcadis North America
LEEDuser Expert
186 thumbs up
July 2, 2015 - 6:43 pm
LEED does not establish criteria for determining pre-development runoff.
Calc the pre based on today's footprint, the post after development.
Leandro Silva
Novva Solutions17 thumbs up
July 3, 2015 - 2:26 pm
Thank you Michael.