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CS-2009 SSc5.1:Site Development—Protect or Restore Habitat

Incorporating LEED interpretation to SSc5.1

Hi all, I have a question regarding a recent LEED interpretation citing SSc5.1. The interpretation basically states that in order for green roofs to count towards this credit, they must be INtensive (6" min. depth) rather than extensive and must incorporate at least 6 different species of sedum. My question is this: Since our project was registered on 2/15/12 and this LEED interpretation was published 10/1/12, is it required that we adhere to its ruling? We were on track to achieve this credit but had specified an extensive system (4" depth). Thanks.

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Profile picture for user tristanroberts
Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up

Tue, 01/29/2013 - 16:29

Phil, typically you would not be held to an Interpretation posted after your registration date. However, the requirement that a green roof contribute to habitat value to contribute to this credit is not new—it's built into the credit language, and this Interpretation only clarifies specific criteria that USGBC is looking for. So I think you can make a  case for earning the credit, and note in your documentation that the Interpretation was posted after your registration date, but I wouldn't feel confident about earning the credit.

Tue, 01/29/2013 - 17:41

Thanks Tristan. I just saw in the credit language that there is an option for an offsite land trust donation. I don't recall seeing this option in the LEED online form (v2009, form version 4.0). If we decided to pursue this option, would we document it under "Alternative Compliance Path"? Has anyone had success using this option?
Profile picture for user tristanroberts
Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up

Fri, 03/22/2013 - 04:40

Yes, document it as an ACP.

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