(a) For each ventilation shaft, vent hole, or centralized point into which CH4 from multiple shafts and/or vent holes are collected, you must calculate the quarterly CH4 liberated from the ventilation system using Equation FF– 1 of this section.
CFR 40-98.323-2013 history
2013CFR 40-98.323-2013 Protection of environment. Part98:Mandatory greenhouse gas reporting. Subpart FF:Underground coal mines. Section98.323:Calculating GHG emissions.