Incorporating LEED interpretation to SSc5.1

January 29, 2013

Phil Meyer

LEEDuser Basic Member

2 thumbs up

January 29, 2013

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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Tristan Roberts

Representative
Vermont House of Representatives

LEEDuser Expert

11478 thumbs up

January 29, 2013 - 11:29 am

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.

Phil Meyer

LEEDuser Basic Member

2 thumbs up

January 29, 2013 - 12:41 pm

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?