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

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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

TSS removal efficiency % table?

What is the best resource for finding TSS removal efficiency for various BMPs? Is there a table or reference to base our #s off of since we don't have calculations or on-site monitoring?

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Profile picture for user tristanroberts
Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up

Mon, 11/21/2011 - 02:47

Kash, there is a table showing sample documentation of TSS efficiencies in the LEED Reference Guide, page 104.
Profile picture for user Mike Dee
Michael DeVuono
Regional Stormwater Leader
Arcadis North America
LEEDuser Expert
144 thumbs up

Sat, 03/03/2012 - 14:17

Structural BMPs (hydro dynamic seperators, CDS units, Snouts, etc) will have have NJCAT reports that report this. I think MA may require the reports as well. Several states have adopted statewide BMP Manuals, which list removal efficiency rates. PA/MD/NJ are all good manuals to look at.

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