---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchC/part60/subpartLLL"
level: "subpart"
label: "Subpart LLL"
heading: "Standards of Performance for SO 2 Emissions From Onshore Natural Gas Processing for Which Construction, Reconstruction, or Modification Commenced After January 20, 1984, and on or Before August 23, 2011"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchC-part60-subpartLLL"
sections_count: 9
---

# Subpart LLL — Standards of Performance for SO 2 Emissions From Onshore Natural Gas Processing for Which Construction, Reconstruction, or Modification Commenced After January 20, 1984, and on or Before August 23, 2011

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter C — Air Programs › Part 60 — Standards of Performance for New Stationary Sources

## Sections

- [§60.640. Applicability and designation of affected facilities.](/cfr/40/60.640.md)
- [§60.641. Definitions.](/cfr/40/60.641.md)
- [§60.642. Standards for sulfur dioxide.](/cfr/40/60.642.md)
- [§60.643. Compliance provisions.](/cfr/40/60.643.md)
- [§60.644. Test methods and procedures.](/cfr/40/60.644.md)
- [§60.645. Reserved](/cfr/40/60.645.md)
- [§60.646. Monitoring of emissions and operations.](/cfr/40/60.646.md)
- [§60.647. Recordkeeping and reporting requirements.](/cfr/40/60.647.md)
- [§60.648. Optional procedure for measuring hydrogen sulfide in acid gas—Tutwiler Procedure. 1](/cfr/40/60.648.md)