NSPS Notebook
Small Industrial/Commercial/Institutional Steam Generating Units -  Subpart Dc

Applicability: eCFR Subpart Dc [ecfr.gov]

This subpart applies to:
  1. Steam generating units with a maximum design heat input capacity of 2.9 - 29 MW (10-100 MMBtu/hr) that commence construction, modification, or reconstruction after June 9, 1989.

Note: A temporary change to an existing steam generating unit for the purpose of conducting combustion research is not considered a modification.
Known Sources in NDEE Jurisdiction:
Date of Original Final Rule: 12/16/87
Amendments Dates: 02/27/2014 - Final Rule; Revisions to Test Methods and Testing Regulations
02/16/2012 - Final Rule
01/20/2011 - Direct Final Rule
01/28/2009 - Final Rule
06/13/2007 - Final Reconsideration
02/27/2006 - Final Rule
State Regulations: Title 129, Chapter 12, Section 001.05

Previously: Title 129, Chapter 18, Section 001.52.

Sources are also responsible for ensuring they are in compliance with current federal requirements found for this subpart in the CFR.
Federal Regulations: 40 CFR 60.40c
Related Rules:

NSPS - 40 CFR Part 60

Subparts D, Da, and Db - Steam Generating Units

NESHAP - 40 CFR Part 63
Subpart DDDDD - Major Source Boilers & Process Heaters
Subpart JJJJJJ - Area Source Boilers
Subpart UUUUU - Electric Utilities
Regulations and Federal Registers: eCFR Subpart Dc [ecfr.gov]

(See attached file: D-Da-Db-Dc - Fed. Reg. 2014-02-27 - Final Rule.pdf)

(See attached file: D-Da-Db-Dc - Fed. Reg. 2012-02-16 - Final Rule.pdf)

(See attached file: D-Da-Db-Dc - Fed. Reg. 2011-01-20 - Direct Final and Proposal.pdf)

(See attached file: D-Da-Db-Dc - Fed. Reg. 2009-01-28 - Final Rule.pdf)

(See attached file: D-Da-Db-Dc - Fed. Reg. 2007-06-13 - Final Rule.pdf)

(See attached file: D-Da-Db-Dc - Fed. Reg. 2006-02-27 - Final Rule.pdf)
SizeFile Name
1,862 KB D-Da-Db-Dc - Fed. Reg. 2014-02-27 - Final Rule.pdf
1,312 KB D-Da-Db-Dc - Fed. Reg. 2012-02-16 - Final Rule.pdf
170 KB D-Da-Db-Dc - Fed. Reg. 2011-01-20 - Direct Final and Proposal.pdf
188 KB D-Da-Db-Dc - Fed. Reg. 2009-01-28 - Final Rule.pdf
454 KB D-Da-Db-Dc - Fed. Reg. 2007-06-13 - Final Rule.pdf
283 KB D-Da-Db-Dc - Fed. Reg. 2006-02-27 - Final Rule.pdf
FAQs, Fact Sheets, and Rule Summaries: Industrial-Commercial-Institutional Steam Generating Units [epa.gov] - contains federal register notices and technical information

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

Rule Flowchart - Texas CEQ [tceq.state.tx.us]
Other Information and Resources:
Notes:
Page Last Updated: 12/16/22