Exemplary Performance ID point for 40% reduction.

Daniel Hersh

Architect

Breslin Ridyard Fadero Architects

LEEDuser Basic Member

4 thumbs up

Project location :

United States

November 19, 2014

Has anyone been able to achieve exemplary performance for this credit? We would like to attempt, but were hoping to find an example or a template for the required calculations to prove the 40% reduction in process water use over the minimum required 20% reduction. The documentation has been the tricky part. Thanks!

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Suzanne Painter-Supplee, LEED AP+ID&C

Principal

SEESolutions LLC

LEEDuser Basic Member

82 thumbs up

Wed, 11/19/2014 - 19:59

There are pieces of kitchen equipment that can help here. Ice Makers--Nugget or Cube isn't specified. If you can use Nugget/Flake, (Sonic-style ice, chewable, great for schools,avoids choking hazards; flaked, athletic depts.) only use 12 gallons/100# compared to the standard at 20. They 'extrude' ice and therefore use all of the water. The dishwasher standard is pretty 'generous' at 1 gallon per rack. That can be cut practically in half if using a rack conveyor. Those two can certainly contribute.

Daniel Hersh

Architect

Breslin Ridyard Fadero Architects

LEEDuser Basic Member

4 thumbs up

Wed, 11/19/2014 - 20:06

Thanks for the reply Suzanne. Is it safe to say we should comply with the alternative compliance method to calculate the overall percentage of process water use reduction, per this calculator? http://www.usgbc.org/resources/2009-water-use-reduction-calculator My gut feeling is that we should be including all process water equipment items (ie. if we have 3 ice machines, 2 food steamers, one clothes washer, etc.) to complete the calculations. The alternative compliance calculator at the usgbc.org website above does not include pre-rinse spray valves in the equipment types, but it seems like we should include that as well.

Suzanne Painter-Supplee, LEED AP+ID&C

Principal

SEESolutions LLC

LEEDuser Basic Member

82 thumbs up

Tue, 11/29/2016 - 18:27

Pre-rinse spray was removed from the group per an addendum in 2010, because it counts as regulated & would therefore be a 'double-dip.' The credit template includes the standards that count, and they are prescriptive, so the equipment just needs to meet that standard to get the credit. I don't think process water reduction as a percentage in V3 schools counts UNLESS it will get total water reduction as calculated for regulated, an EXTRA 10%. Steamers need to be boilerless. I only see three pieces that count UNLESS you have an ice maker in both 175# + AND 175# or LESS. What about a dishwasher? Remember, if you have a disposer, you won't get the credit. But there are alternatives to disposers with a LEED standard for scrappers/collectors/pulpers. Reference is LEED 2009 Healthcare, WEc3, if I recall. Does that help?