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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

Removal % in LEED reference guide table.

If I understand correclty, we can use the table in the reference guide with several BMPs to determine the removal efficiency. In this table however there are 2 values : average TS removal % and Probalb Range of TSS removal which is a range. Which value do we work with. e.g. if we have a wet pond, do we use 60%?

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Amy Rider
Sustainability Manager
KEMA Services
LEEDuser Basic Member
110 thumbs up

Tue, 03/29/2011 - 20:42

The average TSS removal efficiency (i.e. 60% for wet ponds) should be used unless you have a local resource to reference that lists a higher removal efficiency.

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