In addition to the records required by § 98.3(g), you must retain the following records specified in paragraphs (a) through (c) of this section for each ammonia manufacturing unit.

(a) If a CEMS is used to measure emissions, retain records of all feedstock purchases in addition to the requirements in § 98.37 for the Tier 4 Calculation Methodology.

(b) If a CEMS is not used to measure process CO

(1) Records of all analyses and calculations conducted for reported data as listed in § 98.76(b).

(2) Monthly records of carbon content of feedstock from supplier and/or all analyses conducted of carbon content.

(c)

(1) Volume of each gaseous feedstock used in month (scf of feedstock) (in Equation G-1 of § 98.73).

(2) Carbon content of each gaseous feedstock, for month (kg C per kg of feedstock) (in Equation G-1).

(3) Molecular weight of each gaseous feedstock per ammonia manufacturing unit with gaseous feedstock (kg/kg-mole) (Equation G-1).

(4) Volume of each liquid feedstock used in month (gallons of feedstock) (Equation G-2 of § 98.73).

(5) Carbon content of each liquid feedstock, for month (kg C per gallon of feedstock) (Equation G-2).

(6) Mass of each solid feedstock used in month (kg of feedstock) (Equation G-3 of § 98.73).

(7) Carbon content of each solid feedstock, for month (kg C per kg of feedstock) (Equation G-3).