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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 SSc6.1:Stormwater Design—Quantity Control

Rainwater for enclosed car park reutilization

Ricardo Sá

Director of Sustainability

Edifícios Saudáveis Consultores (503 910 767)

LEEDuser Basic Member

79 thumbs up

August 17, 2016

I'm working in a project where rainwater is collected and stored in storage cisterns. These cisterns fed the irrigation system, flush discharges and enclosed car park cleaning. Has anyone had any experience in documenting the reuse of water for car park cleaning as a strategy to manage stormwater? Regards,

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Michael DeVuono

Regional Stormwater Leader

Arcadis North America

LEEDuser Expert

144 thumbs up

Wed, 08/31/2016 - 14:36

If you are using the reclaimed stormwater as a replacement for potable water I see no issue with this. It's the same as using it for the toilet, IMO.

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