Petroleum Refineries
Air Toxics Notebook
Petroleum Refineries
eCFR Subpart CC 
[ecfr.gov]
This subpart applies to:
- Petroleum refining process units (PRPU) located at Major Sources of HAPs* that emit or have equipment containing or contacting at least one of the following HAPs:
| Chemical Name | CAS No. |
|---|---|
| Benzene | 71432 |
| Biphenyl | 92524 |
| Butadiene (1,3) | 106990 |
| Carbon disulfide | 75150 |
| Carbonyl sulfide | 463581 |
| Cresol (m-, o-, p-, and mixed isomers) | 108394, 95487, 106445, & 1319773 |
| Cumene | 98828 |
| Dibromoethane (1,2) (ethylene dibromide) | 106934 |
| Dichloroethane (1,2) | 107062 |
| Diethanolamine | 111422 |
| Ethylbenzene | 100414 |
| Ethylene glycol | 107211 |
| Hexane | 110543 |
| Methanol | 67561 |
| Methyl isobutyl ketone | 108101 |
| Methyl tert butyl ether | 1634044 |
| Naphthalene | 91203 |
| Phenol | 108952 |
| Toluene | 108883 |
| Trimethylpentane (2,2,4) | 540841 |
| Xylene (m-, o-, p-, and mixed isomers) | 108383, 95476, 106423, & 1330207 |
Affected sources:
- Miscellaneous process vents from PRPU;
- Storage vessels associated with PRPU;
- Wastewater streams and treatment operations associated with PRPU;
- Equipment leaks from PRPU;
- Gasoline loading racks (under Standard Industrial Classification Code 2911);
- Marine vessel loading operations at petroleum refineries that are also subject to NESHAP Y;
- Storage vessels and equipment leaks associated with bulk gasoline terminals or pipeline breakout stations (under Standard Industrial Classification Code 2911) located within a contiguous area and under common control with a refinery;
- Heat exchange systems;
- Releases associated with the decoking operations of a delayed coking unit.
Not affected sources:
- Stormwater from segregated stormwater sewers;
- Spills;
- Pumps. compressors, pressure relief devices, sampling connection systems, open-ended valves or lines, valves, or instrumentation systems that are intented to operate in organic HAP service for less than 300 hours per calendar year;
- Catalytic cracking units and catalytic reformer catalyst regeneration vents and sulfur plant vents;
- Emission points routed to a fuel gas system.
*Major Sources of HAPs emit or have the potential to emit:
- ≥ 10 tons/year of any single HAP; or
- ≥ 25 tons/year of total HAPs.
- Area Sources emit less than Major Sources.
Not subject to this subpart:
- Research and development facilities;
- Equipment, located within a PRPU subject to this part, that does not contain any of the HAPs listed above;
- Units processing natural gas liquids;
- Units that are used specifically for recycling discarded oil;
- Shale oil extraction units;
- Ethylene processes;
- Process units and emission points subject to NESHAPs F, G, H, or I.
No
06/20/2013 - Final Rule
07/18/2011 - Partial Withdrawl
06/30/2010 - Corrections
10/28/2009 - Final Rule
05/25/2001 - Technical Corrections
05/08/2000 - Amendments
08/18/1998 - Amendments
06/09/1998 - Direct Final Rule
03/20/1998 - Direct Final Rule
02/21/1997 - Direct Final Rule
06/12/1996 - Corrections
As of September 28, 2022: Title 129, Chapter 13, 002.18
Previously: Title 129, Chapter 28, Section 001.28.
Sources are also responsible for ensuring they are in compliance with current federal requirements found for this subpart in the CFR.
NSPS – 40 CFR Part 60:
Subpart J & Ja – Petroleum Refineries
Subpart GGG & GGGa – Petroleum Refineries (equipment leaks)
Subpart QQQ – Petroleum Refinery Wastewater Systems
NESHAP - 40 CFR Part 63
Subpart UUU - Petroleum Refineries - Catalytic Cracking, Reforming, & Sulfur Recovery
eCFR Subpart CC 
[ecfr.gov]
Texas CEQ - Rule Flowchart 
[tceq.texas.gov]
EPA's Subpart CC Website 
[epa.gov] - Contains federal register notices, technical information, and implementation tools
Hyperion Energy Center Website 
[hyperion] - proposed petroleum refinery in SD - contains air permit applications and emissions information