We are going for LEED CI v2009 in a LEED CS v2009 building. Both are in design. Our client (LEED CI) will be in more than 75% of the building. There are no restrooms in our tenant fit-out (restrooms are in the base building) but there are several pantries throughout the tenant space.
If we encourage the base building to incorporate a rainwater harvesting system into the water use infrastructure to achieve a 40% water reduction, does this mean that we can piggy-back on their reduction?
I've noticed that both WE forms for CI and CS do not incorporate rainwater capture systems into the water reduction calculation. For CS/ NC, under 'Implementation' in WEp1, rainwater collection is mentioned as a strategy to consider.
How do project teams incorporate rainwater harvesting into the water-use reduction calculations? Can we use this water reduction calculation in our LEED CI pursuit?
Many thanks.
Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11477 thumbs up
March 29, 2011 - 10:35 am
Susan, have you looked at earning points under SSc1? I think this is the correct approach here.
Susan M. Kaplan
Director of Specifications and SustainabilityHLW International
70 thumbs up
March 29, 2011 - 11:03 am
Yes, but I don't think it applies to us. In 'Implementation' for Path 10, it says this credit is only for projects that are less than 50% of the total square footage. We're over 75% of the building.
Susan M. Kaplan
Director of Specifications and SustainabilityHLW International
70 thumbs up
March 30, 2011 - 10:59 am
The real question is: If the base building implements a rainwater harvesting system and reduces the building's municipally supplied water use, can we use it in our reduction calculation as well or are we limited to simply calculating flow rates of fixtures our occupants will be using?
Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11477 thumbs up
April 22, 2011 - 6:34 pm
Susan, given that rainwater is listed as a potential technology for achieving this credit in the credit language and that you are over 75% of the building, I think this should work.