NSPS Notebook
Emission Guideline for Sulfuric Acid Production -  Subpart Cd

Applicability: eCFR Subpart Cd [ecfr.gov]

This subpart applies to:
  1. Sulfuric acid production units that commenced construction on or before Aug 19, 1971.
If the sulfuric acid production unit was modified after Aug 19, 1971, then the sulfuric acid production unit is subject to NSPS H.

Definition of sulfuric acid production unit:
  • Any facility producing sulfuric acid by the contact process by burning elemental sulfur, alkylation acid, hydrogen sulfide, organic sulfides and mercaptans, or acid sludge.
  • Does not include facilities where conversion to sulfuric acid is utilized primarily as a means of preventing emissions to the atmosphere of sulfur dioxide or other sulfur compounds.
Known Sources in NDEE Jurisdiction:
Date of Original Final Rule: 12/19/95
Amendments Dates: 12/19/1995 (60 FR 65414)
State Regulations: na
Federal Regulations: 40 CFR 60.30d
Related Rules:

NSPS - 40 CFR Part 60

Subpart H - Sulfuric Acid Plants
Regulations and Federal Registers: eCFR Subpart Cd [ecfr.gov]
FAQs, Fact Sheets, and Rule Summaries:
Other Information and Resources:
Page Last Updated: 4/18/14