Measurement-based methodologies shall be approved in accordance with tiers with the following maximum permissible uncertainties for the annual average hourly emissions calculated in accordance with Equation 2 set out in section 3 of this Annex.
Tiers for CEMS (maximum permissible uncertainty for each tier)
Tier 1 | Tier 2 | Tier 3 | Tier 4 | |
---|---|---|---|---|
CO2 emission sources | ± 10 % | ± 7,5 % | ± 5 % | ± 2,5 % |
N2O emission sources | ± 10 % | ± 7,5 % | ± 5 % | N.A. |
CO2 transfer | ± 10 % | ± 7,5 % | ± 5 % | ± 2,5 % |