The operator shall include at least the following potential sources of CO2 emissions: calcination of limestone in the raw materials, conventional fossil kiln fuels, alternative fossil-based kiln fuels and raw materials, biomass kiln fuels (biomass wastes), non-kiln fuels, organic carbon content of limestone and shales and raw materials used for waste gas scrubbing.
Driftslederen inkluderer som minimum følgende potentielle CO2-emissionskilder: kalcinering af kalksten i råmaterialerne, traditionelle fossile ovnbrændsler, alternative fossilt baserede ovnbrændsler og råmaterialer, biomasseovnbrændsler (biomasseaffald), andre brændsler end ovnbrændsler, organisk kulstofindhold af kalksten og skiffer og råmaterialer anvendt til røggasvask.