NSPS Notebook
Stationary Combustion Turbines -  Subpart KKKK

Applicability: eCFR Subpart KKKK [ecfr.gov]

This subpart applies to:
  1. Stationary combustion turbines that meet both of the following conditions:
    • Heat input at peak load of ≥ 10.7 gigajoules (10 MMBtu) per hour, based on the higher heating value of the fuel;
    • Commence construction, modification, or reconstruction after Feb 18, 2005.
Stationary gas turbines that commenced construction, modification, or reconstruction after Oct 3, 1977 and on or before Feb 18, 2005 are subject to NSPS GG.

Heat recovery steam generators and duct burners regulated under this subpart are exempt from the requirements of NSPS Da, Db, and Dc.

Not subject to this subpart:
  1. Combustion turbines at integrated gasification combined cycle eletric utility steam generating units that are subject to NSPS Da;
  2. Combustion turbine test cells/stands.
Partially Exempt:
  1. Emergency combustion turbines are exempt from the NOx limits in 60.4320;
  2. Combustion turbines used by manufacturers for research and development of equipment for both turbine emission control techniques and efficiency improvements may be exempt from the NOx limits in 60.4320, subject to Administrator approval;
Known Sources in NDEE Jurisdiction:
Date of Original Final Rule: 7/6/06
Amendments Dates: 03/20/2009 (74 FR 11861)
State Regulations: Title 129, Chapter 12, Section 001.82

Previously: Chapter 18, Section 001.77
Federal Regulations: 40 CFR 60.4300
Related Rules:

NSPS - 40 CFR Part 60

Subpart GG - Combustion turbines
Subparts Da, Db, and Dc - Steam-generating units

NESHAP - 40 CFR Part 63
Subpart YYYY - Stationary combustion turbines
Regulations and Federal Registers: eCFR Subpart KKKK [ecfr.gov]

(See attached file: 2G & 4K - Fed. Reg. 2012-08-29 - Proposed Rule.pdf)

(See attached file: 4K - Fed. Reg. 2009-03-20 - Final Rule.pdf)

SizeFile Name
640 KB 2G & 4K - Fed. Reg. 2012-08-29 - Proposed Rule.pdf
65 KB 4K - Fed. Reg. 2009-03-20 - Final Rule.pdf
FAQs, Fact Sheets, and Rule Summaries: EPA's turbine website [epa.gov] - contains federal register notices and technical information

EPA Sponsored Combustion Portal [combustionportal.org] - Federal & state compliance information & sustainability content for combustion processes

TCEQ Flowchart [tceq.texas.gov]

Other Information and Resources:
Page Last Updated: 12/21/22