---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchC/part63/subpartCCCCC"
level: "subpart"
label: "Subpart CCCCC"
heading: "National Emission Standards for Hazardous Air Pollutants for Coke Ovens: Pushing, Quenching, and Battery Stacks"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchC-part63-subpartCCCCC"
sections_count: 39
---

# Subpart CCCCC — National Emission Standards for Hazardous Air Pollutants for Coke Ovens: Pushing, Quenching, and Battery Stacks

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

- [§63.7280. What is the purpose of this subpart?](/cfr/40/63.7280.md)
- [§63.7281. Am I subject to this subpart?](/cfr/40/63.7281.md)
- [§63.7282. What parts of my plant does this subpart cover?](/cfr/40/63.7282.md)
- [§63.7283. When do I have to comply with this subpart?](/cfr/40/63.7283.md)
- [§63.7290. What emission limitations must I meet for capture systems and control devices applied to pushing emissions?](/cfr/40/63.7290.md)
- [§63.7291. What work practice standards must I meet for fugitive pushing emissions if I have a by-product coke oven battery with vertical flues?](/cfr/40/63.7291.md)
- [§63.7292. What work practice standards must I meet for fugitive pushing emissions if I have a by-product coke oven battery with horizontal flues?](/cfr/40/63.7292.md)
- [§63.7293. What work practice standards must I meet for fugitive pushing emissions if I have a nonrecovery coke oven battery?](/cfr/40/63.7293.md)
- [§63.7294. What work practice standard must I meet for soaking?](/cfr/40/63.7294.md)
- [§63.7295. What requirements must I meet for quenching?](/cfr/40/63.7295.md)
- [§63.7296. What emission limitations must I meet for battery stacks?](/cfr/40/63.7296.md)
- [§63.7297. What emission limitations must I meet for HNR HRSG main stacks?](/cfr/40/63.7297.md)
- [§63.7298. What emission limitations must I meet for HNR HRSG bypass/waste heat stacks?](/cfr/40/63.7298.md)
- [§63.7299. What opacity limitations must I meet for HNR HRSG bypass/waste heat stacks?](/cfr/40/63.7299.md)
- [§63.7300. What are my operation and maintenance requirements?](/cfr/40/63.7300.md)
- [§63.7310. What are my general requirements for complying with this subpart?](/cfr/40/63.7310.md)
- [§63.7320. By what date must I conduct performance tests or other initial compliance demonstrations?](/cfr/40/63.7320.md)
- [§63.7321. When must I conduct subsequent performance tests?](/cfr/40/63.7321.md)
- [§63.7322. What test methods and other procedures must I use to demonstrate initial compliance with the emission limits?](/cfr/40/63.7322.md)
- [§63.7323. What procedures must I use to establish operating limits?](/cfr/40/63.7323.md)
- [§63.7324. What procedures must I use to demonstrate initial compliance with the opacity limits?](/cfr/40/63.7324.md)
- [§63.7325. What test methods and other procedures must I use to demonstrate initial compliance with the TDS or constituent limits for quench water?](/cfr/40/63.7325.md)
- [§63.7326. How do I demonstrate initial compliance with the emission limitations that apply to me?](/cfr/40/63.7326.md)
- [§63.7327. How do I demonstrate initial compliance with the work practice standards that apply to me?](/cfr/40/63.7327.md)
- [§63.7328. How do I demonstrate initial compliance with the operation and maintenance requirements that apply to me?](/cfr/40/63.7328.md)
- [§63.7330. What are my monitoring requirements?](/cfr/40/63.7330.md)
- [§63.7331. What are the installation, operation, and maintenance requirements for my monitors?](/cfr/40/63.7331.md)
- [§63.7332. How do I monitor and collect data to demonstrate continuous compliance?](/cfr/40/63.7332.md)
- [§63.7333. How do I demonstrate continuous compliance with the emission limitations that apply to me?](/cfr/40/63.7333.md)
- [§63.7334. How do I demonstrate continuous compliance with the work practice standards that apply to me?](/cfr/40/63.7334.md)
- [§63.7335. How do I demonstrate continuous compliance with the operation and maintenance requirements that apply to me?](/cfr/40/63.7335.md)
- [§63.7336. What other requirements must I meet to demonstrate continuous compliance?](/cfr/40/63.7336.md)
- [§63.7340. What notifications must I submit and when?](/cfr/40/63.7340.md)
- [§63.7341. What reports must I submit and when?](/cfr/40/63.7341.md)
- [§63.7342. What records must I keep?](/cfr/40/63.7342.md)
- [§63.7343. In what form and how long must I keep my records?](/cfr/40/63.7343.md)
- [§63.7350. What parts of the General Provisions apply to me?](/cfr/40/63.7350.md)
- [§63.7351. Who implements and enforces this subpart?](/cfr/40/63.7351.md)
- [§63.7352. What definitions apply to this subpart?](/cfr/40/63.7352.md)