---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchC/part64"
level: "part"
label: "Part 64"
heading: "Compliance Assurance Monitoring"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchC-part64"
sections_count: 10
---

# Part 64 — Compliance Assurance Monitoring

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter C — Air Programs

## Sections

- [§64.1. Definitions.](/cfr/40/64.1.md)
- [§64.2. Applicability.](/cfr/40/64.2.md)
- [§64.3. Monitoring design criteria.](/cfr/40/64.3.md)
- [§64.4. Submittal requirements.](/cfr/40/64.4.md)
- [§64.5. Deadlines for submittals.](/cfr/40/64.5.md)
- [§64.6. Approval of monitoring.](/cfr/40/64.6.md)
- [§64.7. Operation of approved monitoring.](/cfr/40/64.7.md)
- [§64.8. Quality improvement plan (QIP) requirements.](/cfr/40/64.8.md)
- [§64.9. Reporting and recordkeeping requirements.](/cfr/40/64.9.md)
- [§64.10. Savings provisions.](/cfr/40/64.10.md)