A more detailed analysis identifying consumptive and non-consumptive water use, water depletion of reservoirs, or changes to water quality in a given watershed is beyond the scope of this study.
The environmental impacts of the ethanol production pathways assessed using a per MJ functional unit are compared to each other and gasoline produced in 2005.
Life cycle data for 2005 gasoline is obtained using The Greenhouse Gases, Regulated Emissions, and Energy Use in
Transportation Model v1.2.0.11425 (GREET).