---
kind: "section"
citation: "40 C.F.R. § 63.7296"
title: "40"
number: "63.7296"
heading: "What emission limitations must I meet for battery stacks?"
url: "https://uscodex.org/cfr/40/63.7296"
---

# §63.7296. What emission limitations must I meet for battery stacks?


You must not discharge to the atmosphere any emissions from any battery stack at a new or existing by-product coke oven battery that exhibit an opacity greater than the applicable limits in paragraphs [(a)](#a) and [(b)](#b) of this section and emissions greater than the applicable limits in [paragraphs (c) through (f)](#c..f) of this section.

- (a) **Daily average of 15 percent opacity for a battery on a normal coking cycle.**
- (b) **Daily average of 20 percent opacity for a battery on batterywide extended coking.**
- (c) Emissions of particulate matter from a new by-product coke oven battery stack that exceeds 0.013 gr/dscf at 10 percent oxygen or existing by-product coke oven battery stack that exceeds 0.13 gr/dscf at 10 percent oxygen.
- (d) Emissions of mercury from a new by-product coke oven battery stack that exceeds 7.1E-06 lb/ton coke or existing by-product coke oven battery stack that exceeds 4.5E-05 lb/ton coke.
- (e) Emissions of total acid gases from a new by-product coke oven battery stack that exceeds 0.013 lb/ton coke or existing by-product coke oven battery stack that exceeds 0.16 lb/ton coke.
- (f) Emissions of hydrogen cyanide from a new by-product coke oven battery stack that exceeds 7.4E-04 lb/ton coke or existing by-product coke oven battery stack that exceeds 0.032 lb/ton coke.

## Notes

### Amendments

[89 FR 55743, July 5, 2024]

### Source

Source: 68 FR 18025, Apr. 14, 2003, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.

### Amendments

[89 FR 55743, July 5, 2024]