(a)
If a CEMS is used to measure CO2 emissions, then in addition to the records required by § 98.3(g), you must retain under this subpart the records required for the Tier 4 Calculation Methodology in § 98.37.
(b)
If a CEMS is not used to measure CO2 emissions, then in addition to the records required by § 98.3(g), you must retain the records specified in this paragraph (b) for each portland cement manufacturing facility.
(1)
Documentation of monthly calculated kiln-specific clinker CO2 emission factor.
(2)
Documentation of quarterly calculated kiln-specific CKD CO2 emission factor.
(3)
Measurements, records and calculations used to determine reported parameters.
Code of Federal Regulations
[75 FR 66461, Oct. 28, 2010]