Analysis, heuristics, and uncertainty of hybrid life cycle assessment: agriculture and construction case studies

The process LCI method systematically models the known environmental inputs and outputs by utilizing a process flow diagram. The scope of the process model continues to the point where the flow between process and emissions are negligible. The process approach was further developed with the framework established in the ISO 14040 series. This approach requires data collection from public sources, company or product specific information, and published research.