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Why do the requirements focus on 1-year and 2-year, 24-hour storms?

Why include the 1-year storm in the credit requirements? Won't management practices for the 2-year storm be effective?

How can green roofs count as a stormwater control measure?

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The calculations for this credit are always a headache! While our projects are usually awarded the credit, the equations in the LEED Reference Guide are helpful mostly for sizing a reservoir or cistern, but don't help you get to the final results. Does US

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NC-2009 SSc6.2:Stormwater Design—Quality Control

percentage versus actual TSS number

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Adrienn Gelesz
LEED AP
ABUD Engineering Ltd.
LEEDuser Basic Member
34 thumbs up

Hi! Does anyone know how to convert remaining g/l data into percentage data? If there is a oil separator where this data is given (e.g.what is the maximum TSS content of water after cleaning), how can we assign a % to it from the LEED table?

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Michael DeVuono
Regional Stormwater Leader
Arcadis North America
LEEDuser Expert
144 thumbs up

Fri, 09/14/2012 - 11:21

What method are you using for treatment? You need to calc the pollutant load based in the cover type the water flows over. Each cover type has an EMC, Event Mean Concentration, which is produced per volume of runoff.

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