The activity data used for this source category is the same data collected for the direct N₂O emissions. Specifically:

• Synthetic fertilizers:
  • Total amount of nitrogen applied as fertilizer;
• Animal manure:
  • Total amount of nitrogen in animal manure produced;
  • Amount of animal manure that is devoted to other uses, and not contributing to leaching and runoff;
  • Nitrogen content in manure;
• For sewage sludge:
  • Amount applied to soils;
  • Nitrogen content in sewage sludge;

Additionally, the Party must produce values for FRAC_GASF, FRAC_GASM, and FRAC_LEACH. Note that these fractions should be consistent with those used to estimate direct emissions.