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The life cycle inventory (LCI) presented in this study quantifies the total energy
requirements, energy sources, atmospheric pollutants, waterborne pollutants, and solid
waste resulting from the production of recycled PET and HDPE resin from postconsumer
plastic.
This analysis does not include impact assessment. It does not attempt to determine
the fate of emissions, or the relative risk to humans or to the environment due to
emissions from the systems. (An exception is made in the case of global warming
potential impacts, which are calculated based on internationally accepted factors for
various greenhouse gases global warming potentials relative to carbon dioxide.)
A life cycle inventory quantifies the energy consumption and environmental
emissions (i.e., atmospheric emissions, waterborne emissions, and solid wastes) for a
given product based upon the study boundaries established. Figure 1-1 illustrates the
general approach used in a full LCI analysis.
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