The American Institute of Architects - AIA - has a "Materials Matter" program, where there are resources that may be of interest to creators and users of HPDs. Please see the links below to access the AIA program resources.
AIA Materials website: http://www.aia.org/practicing/materials/
Essay: “Materials Transparency: Managing Risk, Seizing Opportunity”: http://www.aia.org/practicing/groups/kc/AIAB104034
AIA White Paper, Materials Transparency & Liability Risk: http://www.aia.org/aiaucmp/groups/aia/documents/pdf/aiab108448.pdf