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It still seems like biobased materials should be better for the environment. Even after the LEED Wood Wars, even after all the stories of pollution and waste from industrial agriculture, it just seems logical that resources we grow as part of a natural cycle are greener than the ones we mine or extract.
This intuitive attraction may explain why various versions of "biobased" and "natural" claims, like the "rapidly renewable" credit in LEED 2009, have had so much staying power, why the building industry is just starting to take a much-needed closer look, and why it's still hard to figure out how to effectively evaluate the impact of these materials in our industry.
I applaud USGBC and its proposed LEED 2012 "sustainable sourcing" credit for trying to tackle this issue and appreciate the challenge USGBC faces in doing so. However, there's still some work to be done. There has been a great discussion on LEEDuser about this, particularly comments by Tom Lent of the Healthy Building Network and Mara Baum of HOK. Baum put it well when she said, "Wouldn't it be great if in 5 or 10 years we had an FSC equivalent for all major raw material industries? However, we still need a usable, justifiable version of LEED between now and then."
Here are some steps I propose for increasing our scrutiny.
The environmental and health hazards associated with biobased products are myriad and complex, depending on the material. Below are some issues, but even this long list is not exhaustive.
Improving practices and figuring out how to assess and document more sustainable practices is going to take a while. There is no ready equivalent to FSC for most biobased materials aside from wood.
Certification to organic standards or other sustainable agriculture standards can provide guidance in some cases. There are any number of international certifications looking at different aspects of cotton production, including social concerns, and that's just scratching the surface. While not perfect, many of these ensure practices that are far preferable to standard agricultural practice and represent an existing raw material supply that can respond to a growing market generated by LEED. Leading manufacturers have already, appropriately, turned to these sources in seeking out responsible sourcing for biobased materials.
It seems only prudent to capitalize on the work that's been done while still providing direction for further improvement. This touches on the broader issue of the role of product (and manufacturing or harvest process) certifications in LEED around which there continues to be extensive debate. Biobased materials is yet another area where it behooves us to carefully assess the relevant concerns and possible mechanisms to address them, and then take great care in selecting approaches to fill in the gaps.
BuildingGreen and Healthy Building Network are collaborating on deeper research of these questions, so look for deeper treatment in an upcoming EBN feature article and in Pharos--digging into the issues for different materials and different product categories, what certifications and other measures exist now to help us evaluate 'sustainable sourcing' and other aspects of biomaterials, and what manufacturers are taking leaps beyond the norm in addressing these issues.
We welcome comments and insight on manufacturers you think are going above and beyond, issues you think are all too easily overlooked, or frameworks and certifications that address these issues.
That is good info for our readers, Dagmar. Thanks for posting.
Hi - You can always find the status of current GREENGUARD Certification in our Sustainable Product Guide at www....
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