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NC-v4 MRc3:Building product disclosure and optimization - sourcing of raw materials

Reused materials from project site - burned trees and stone

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Kevin Gilleran
president
Gilleran Energy Management, Inc.
LEEDuser Premium Member
18 thumbs up

Good Day,

I have a project that is in an area of northern California that was subject to a brutal and fierce 2017 fire burning over 3000 structures. Our client is constructing a winery on a site that was within the the fire zone and has salvaged some fire burned dead redwood trees and milled them onsite for siding of the building. In the same way stone that has been salvaged onsite is being reused onsite by local masons for siding and other element of the exterior fascade.

Would these two materials fall under the Option 2. material reuse portion of this credit?

Thank you.

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emily reese moody
Sustainability Director, Certifications & Compliance
Jacobs
LEEDuser Expert
469 thumbs up

Mon, 06/26/2023 - 19:43

Hi Kevin, My gut reaction is that this aspect would contribute to the demo/construction waste diversion, but not material reuse...this is a specific enough question, though, that I'd check with LEED Coach to be sure. If you do, please post back here so we know the response. I'm sure this will come up again with the unfortunate increase in wildfires.
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Kevin Gilleran
president
Gilleran Energy Management, Inc.
LEEDuser Premium Member
18 thumbs up

Mon, 06/26/2023 - 23:49

Good afternoon Emily, I have an email into the LEED Coach and will share the response once I hear back. Kevin
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Deborah Lucking
Director of Sustainability
Fentress Architects
LEEDuser Expert
224 thumbs up

Tue, 06/27/2023 - 15:33

In addition to Emily's suggestion of waste diversion, I would think the wood could be considered "regional", and the stone is "material reuse" as long as its new use is different from the original application.
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Dave Hubka
Practice Leader - Sustainability
EUA
LEEDuser Expert
510 thumbs up

Tue, 06/27/2023 - 16:03

I have not had success claiming 'wood not harvested for constrution purposes' within this credit. In my instance the wood was local and cut down due to disease. Regional only applies when the product meets one of the criteria specified by the credit language (e.g., recycled, bio-based, FSC, etc.). If the 'diseased wood' was FSC or usgbc-approved equivalent, then it would be able to contribute....AND it could also potentially contribute to the regional element of the credit language. If the stone is natural then it does not contribute to waste diversion or reuse. If the stone is 'man made' then it does contribute to waste diverion AND it is considered salvaged material that is a reuse material which contributes to the Sourcing of Raw Materials credit.  This is my understanding, please correct me if anyone learns different from GBCI / LEED Coach...as I love to open up more ways to achieve LEED points! 
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Tom Cleveland
Director of Sustainability
Stony Creek Quarry Corporation
LEEDuser Basic Member
0 thumbs up

Tue, 06/27/2023 - 18:30

I would hope that the natural stone would qualify for material reuse in addition to the engineered stone.  Certainly LEED should not be creating an incentive to use more engineered stone over natural stone - direct comparison of EPDs shows that engineered stone has over 200% of the embodied carbon compared to natural stone.  If it does, hopefully this can be addressed in upcoming versions.

Thu, 07/13/2023 - 01:13

Hi Kevin, have you heard back from LEED Coach. I have similar issue of reusing stone extracted onsite.

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