See all forum discussions about NC-2009 WEc2
 Subscribe to new posts about NC-2009 WEc2 Post a new question aboutNC-2009 WEc2
See LEEDuser’s guidance on NC-2009 WEc2»
FAQs about WEc2 :

The credit language says the Option 2 involves a reduction in wastewater. Does that mean that all water, including process water, should be included?

Can project teams include reclaimed water systems that are planned and funded, but not completed?

View answers »

Forum discussion

NC-2009 WEc2:Innovative Wastewater Technologies

Changes to system after project has been certified, what to do?

Profile picture for user croyal
Courtney Royal
Sr. Sustainability Consultant
Taitem Engineering
LEEDuser Basic Member
36 thumbs up

What is your experience with LEED projects that remove a specific technology (project did earn a LEED point) due to another recommendation, say a third party energy audit after the project was already LEED certified? For example, a third party is benchmarking a LEED platinum project in update New York that captures stormwater runoff from the roof, collects the water in a big tank, and uses it to flush the toilets. Before the water is used to flush the toilets, it runs through a water purification systems that includes both filtration and UV (WEc2- Option 2, treat on-site wastewater to tertiary standards). The third party energy auditor would like to recommend unplugging the purification system in order to save energy (ECM in report). My question is, how would this affect their LEED credit? or would it? - the project was certified in 2010. I am a little confused. Thanks!

0
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Profile picture for user dconnelly
Dylan Connelly
Mechanical Engineer
Integral Group
LEEDuser Expert
342 thumbs up

Thu, 08/02/2012 - 15:44

Courtney, If your project is collecting rainwater and using it to flush the toilets then your project probably did or should have gone with WEc2 Option 1 - reduce potable water use for sewage conveyance by 50% through the use of nonpotable water (e.g., captured rainwater). In which case if you remove the purification system it wouldn't affect your LEED credit intent. In addition, if your project is already certified LEED NC, I've never heard of it being taken away regardless of what happens during occupancy. Option 2 is if you are treating the water after it has been flushed (wastewater) and reusing it onsite.
Profile picture for user croyal
Courtney Royal
Sr. Sustainability Consultant
Taitem Engineering
LEEDuser Basic Member
36 thumbs up

Thu, 08/02/2012 - 16:57

Thanks a lot, Dylan. For some reason, every time I read this credit, I always get confused and automatically think Option 2 when captured rainwater is discussed. And then treating rainwater to tertiary standards seems way overkill!

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.