---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchC/part63/subpartLLLLL"
level: "subpart"
label: "Subpart LLLLL"
heading: "National Emission Standards for Hazardous Air Pollutants: Asphalt Processing and Asphalt Roofing Manufacturing"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchC-part63-subpartLLLLL"
sections_count: 19
---

# Subpart LLLLL — National Emission Standards for Hazardous Air Pollutants: Asphalt Processing and Asphalt Roofing Manufacturing

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

- [§63.8680. What is the purpose of this subpart?](/cfr/40/63.8680.md)
- [§63.8681. Am I subject to this subpart?](/cfr/40/63.8681.md)
- [§63.8682. What parts of my plant does this subpart cover?](/cfr/40/63.8682.md)
- [§63.8683. When must I comply with this subpart?](/cfr/40/63.8683.md)
- [§63.8684. What emission limitations and operating limits must I meet?](/cfr/40/63.8684.md)
- [§63.8685. What are my general requirements for complying with this subpart?](/cfr/40/63.8685.md)
- [§63.8686. By what date must I conduct initial performance tests or other initial compliance demonstrations?](/cfr/40/63.8686.md)
- [§63.8687. What performance tests, design evaluations, and other procedures must I use?](/cfr/40/63.8687.md)
- [§63.8688. What are my monitoring installation, operation, and maintenance requirements?](/cfr/40/63.8688.md)
- [§63.8689. How do I demonstrate initial compliance with the emission limitations?](/cfr/40/63.8689.md)
- [§63.8690. How do I monitor and collect data to demonstrate continuous compliance?](/cfr/40/63.8690.md)
- [§63.8691. How do I conduct periodic performance tests and demonstrate continuous compliance with the emission limitations and operating limits?](/cfr/40/63.8691.md)
- [§63.8692. What notifications must I submit and when?](/cfr/40/63.8692.md)
- [§63.8693. What reports must I submit and when?](/cfr/40/63.8693.md)
- [§63.8694. What records must I keep?](/cfr/40/63.8694.md)
- [§63.8695. In what form and how long must I keep my records?](/cfr/40/63.8695.md)
- [§63.8696. What parts of the General Provisions apply to me?](/cfr/40/63.8696.md)
- [§63.8697. Who implements and enforces this subpart?](/cfr/40/63.8697.md)
- [§63.8698. What definitions apply to this subpart?](/cfr/40/63.8698.md)