---
kind: "section"
citation: "40 C.F.R. § 98.172"
title: "40"
number: "98.172"
heading: "GHGs to report."
url: "https://uscodex.org/cfr/40/98.172"
---

# §98.172. GHGs to report.

- (a) You must report under [subpart C](/cfr/40/subpartC.md) of this part (General Stationary Fuel Combustion Sources) the emissions of CO2, CH4, and N2O from each stationary combustion unit following the requirements of [subpart C](/cfr/40/subpartC.md) except for flares. Stationary combustion units include, but are not limited to, by-product recovery coke oven battery combustion stacks, blast furnace stoves, boilers, process heaters, reheat furnaces, annealing furnaces, flame suppression, ladle reheaters, and other miscellaneous combustion sources.
- (b) You must report CO2 emissions from flares that burn blast furnace gas or coke oven gas according to the procedures in [§ 98.253(b)(1)](/cfr/40/98.253.md?p=b-1) of [subpart Y](/cfr/40/subpartY.md) (Petroleum Refineries) of this part. When using the alternatives set forth in [§ 98.253(b)(1)(ii)(B)](/cfr/40/98.253.md?p=b-1-ii-B) and [§ 98.253(b)(1)(iii)(C)](/cfr/40/98.253.md?p=b-1-iii-C), you must use the default CO2 emission factors for coke oven gas and blast furnace gas from Table C-1 to [subpart C](/cfr/40/subpartC.md) in Equations Y-2 and Y-3 of subpart Y. You must report CH4 and N2O emissions from flares according to the requirements in [§ 98.33(c)(2)](/cfr/40/98.33.md?p=c-2) using the emission factors for coke oven gas and blast furnace gas in Table C-2 to [subpart C](/cfr/40/subpartC.md) of this part.
- (c) You must report process CO2 emissions from each taconite indurating furnace; basic oxygen furnace; non-recovery coke oven battery combustion stack; coke pushing process; sinter process; EAF; decarburization vessel; and direct reduction furnace by following the procedures in this subpart.

## Notes

### Amendments

[74 FR 56374, Oct. 30, 2009, as amended at 75 FR 66463, Oct. 28, 2010]

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Source

Source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.

### Amendments

[74 FR 56374, Oct. 30, 2009, as amended at 75 FR 66463, Oct. 28, 2010]