The description of the source and the methodology for estimating emissions and emission
factors presented in this section are taken directly from the State Workbook: Methodologies for
Estimating Greenhouse Gas Emissions and the Inventory of U.S. Greenhouse Gas Emissions and
Sinks: 1990-1994, prepared by the U.S. Environmental Protection Agency’s Office of Policy, Planning
and Evaluation (OPPE). A more detailed discussion of the processes and variables affecting N2O
generation from this source can be found in those volumes