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  2. Greenhouse Gas Reporting Program (GHGRP)

Subpart YY - Caprolactam, Glyoxal, and Glyoxylic Acid Production

This page provides resources for subpart YY reporters, including implementation information as well as supporting documents for relevant rulemakings.

On this page:
  • Summary
  • Reporter Resources
  • Regulatory History

Read the Current Rule

Summary

This source category applies to any facility that produces caprolactam (C6H11NO), glyoxal (C2H2O2), or glyoxylic acid (C2H2O3), but excludes the production of C2H2O2 through the LaPorte process (i.e., the gas-phase catalytic oxidation of ethylene glycol (C2H6O2) with air in the presence of a silver (Ag) or copper (Cu) catalyst).

Reporter Resources

  • Subpart YY Information Sheet
  • Subpart YY Monitoring Checklist

Subpart YY Regulatory History

40 CFR Part 98.510
Federal Register Date Citation Action Description First reporting year impacted
4/25/2024 89 FR 31802 Final Rule

Updates global warming potentials (GWPs), expands the GHGRP to new source categories, and revises the requirements for certain sectors to improve the data collected and program implementation.
Final Preamble and Rule
Response to Comments 2024 (pdf) (5.05 MB)
Final Rule Fact Sheet (April 2024) (pdf) (343.73 KB)
Supplemental Preamble and Rule
Proposed Preamble and Rule
Rulemaking Docket

2025

Greenhouse Gas Reporting Program (GHGRP)

  • Find and Use GHGRP Data
  • National Data Highlights
    • Emissions Trends
    • Emissions by GHG
    • Emissions by Location
    • Emissions Ranges
  • Sector Data Highlights
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    • Supply, Underground Injection, and Geologic Sequestration of CO2
    • Fluorinated Greenhouse Gases
  • Data Sets
  • For GHG Reporters
    • Rulemaking Notices
      • Subpart W
      • Historical Rulemakings
    • Resources by Subpart
    • Confidential Business Information
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  • Learn About GHGRP
    • What is the GHGRP?
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      • Landfills and GHGRP
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  • Data Citation
Contact Us About GHG Reporting
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on August 15, 2024
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