Forum discussion
NC-2009 SSc6.2: Stormwater Design—Quality Control
I heard a comment from a LEED user that GBCI reviewers do not understand the application of Best Management Practices in series.
Has anyone seen this on LEED reviews, and how have you dealt with it?
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Why do the requirements focus on 1-year and 2-year, 24-hour storms?
How can green roofs count as a stormwater control measure?
I have 100-year data—how do I convert to 2-year?
Are there special considerations for international projects?
What performance threshold do I need to achieve for an Exemplary Performance point?
Michael DeVuono
Regional Stormwater LeaderArcadis North America
LEEDuser Expert
187 thumbs up
January 30, 2013 - 10:27 am
I have not heard this, but I can emphasize that a train of 50% removal>30% removal will not satisfy this credit.
Hypothetical ... sinple drainage area (this get very complex with multiple areas)
100 lbs TSS generated by our runoff volume.
We need to remove 80 lbs of TSS.
Runoff volume routed through BMP with 50% removal efficiency.
50 lbs removed, 50 lbs remain.
Next in series is a BMP with 30% removal efficiency
15 lbs of the remaining 50 lbs is removed.
65 lbs<80 lbs