One group I might consider talking to is PE International. They offer sustainability consulting in areas such as Environmental management, Corporate Social Responsibility (CSR) Reporting, Life Cycle Assessments (LCA), Carbon Footprinting, Water Footprinting, Environmental Product Declarations (EPD), and Design for Environment (DfE).
They also produce a software that can help you implement this into your own company called GaBi. I haven’t look into the software myself, still doing this all manually, but it looks promising and is also the basis for SustainabilityXpress that is being brought into Solidworks 2010.
PE International
http://www.pe-international.com/
GaBi Software
http://www.pe-international.com/gabi/