This is probably the best overview of an LCA approach available: 1997 Environmental management-life cycle assessment-principles and framework (ISO/FDIS 14040), ISO TC 207. The LCA framework was standardized in 1997 by the ISO (1997) International organization of standardization and is part of the wider set of ISO 14000 Environmental Standards. Conclusions and recommended courses of action.
Identification of issues based on results. Occur at multiple stages throughout the scope of the project, such as at the collection of new information. INTERPRETATIONS: Follow a systematic method for evaluating, checking, quantifying, and identifying data/information collected from the Goals & Scope, Inventory Analysis, and Impact Assessments. measurement of indicators, inventory flow, normalizations. classification into impact categories and parameters. selection of impact categories, indicators, models. INVENTORY ANALYSIS: flows of materials and energy In each section, there are several bullet points Impact Assessment is linked to Inventory Analysis and interpretation of results. 
The Inventory Analysis element is linked to both the Define Goals and Scope element and the Impact Assessment element as well as the Interpretation of results. The Define Goals and Scope element is linked to the Inventory Analysis element and to the Interpretation of results. In the graphic, each part is shown to be dependent on other parts the use of arrows indicates flow between those parts. The Common Elements of a Life-Cycle Analysis graphic has four parts: Define Goals and Scope, Inventory Analysis, Impact Assessment, and Interpretations.
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