---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchC/part63/subpartLLLLLL"
level: "subpart"
label: "Subpart LLLLLL"
heading: "National Emission Standards for Hazardous Air Pollutants for Acrylic and Modacrylic Fibers Production Area Sources"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchC-part63-subpartLLLLLL"
sections_count: 7
---

# Subpart LLLLLL — National Emission Standards for Hazardous Air Pollutants for Acrylic and Modacrylic Fibers Production Area Sources

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter C — Air Programs › Part 63 — National Emission Standards for Hazardous Air Pollutants for Source Categories

## Sections

- [§63.11393. Am I subject to this subpart?](/cfr/40/63.11393.md)
- [§63.11394. What are my compliance dates?](/cfr/40/63.11394.md)
- [§63.11395. What are the standards and compliance requirements for existing sources?](/cfr/40/63.11395.md)
- [§63.11396. What are the standards and compliance requirements for new sources?](/cfr/40/63.11396.md)
- [§63.11397. What General Provisions apply to this subpart?](/cfr/40/63.11397.md)
- [§63.11398. What definitions apply to this subpart?](/cfr/40/63.11398.md)
- [§63.11399. Who implements and enforces this subpart?](/cfr/40/63.11399.md)