---
kind: "section"
citation: "40 C.F.R. § 63.11438"
title: "40"
number: "63.11438"
heading: "What are the standards for new and existing sources?"
url: "https://uscodex.org/cfr/40/63.11438"
---

# §63.11438. What are the standards for new and existing sources?

- (a) For each kiln that fires glazed ceramic ware, you must maintain the peak temperature below 1540 °C (2800 °F) and comply with one of the management practices in paragraphs [(a)(1)](#a-1) and [(2)](#a-2) of this section:
  - (1) Use natural gas, or equivalent clean-burning fuel, as the kiln fuel; or
  - (2) **Use an electric-powered kiln.**
- (b) You must maintain annual wet glaze usage records for your facility.
- (c) For each atomized glaze spray booth located at a clay ceramics manufacturing facility that uses more than 227 Mg/yr (250 tpy) of wet glaze(s), you must comply with the equipment standard requirements in [paragraph (c)(1)](#c-1) of this section or the management practice in [paragraph (c)(2)](#c-2) of this section.
  - (1) Control the emissions from the atomized glaze spray booth with an air pollution control device (APCD), as defined in [§ 63.11444](/cfr/40/63.11444.md).
    - (i) Operate and maintain the APCD in accordance with the equipment manufacturer's specifications; and
    - (ii) Monitor the APCD according to the applicable requirements in [§ 63.11440](/cfr/40/63.11440.md).
  - (2) Alternatively, use wet glazes containing less than 0.1 (weight) percent clay ceramics metal HAP.
- (d) For each atomized glaze spray booth located at a clay ceramics manufacturing facility that uses 227 Mg/yr (250 tpy) or less of wet glaze(s), you must comply with one of the management practices or equipment standards in paragraphs [(d)(1)](#d-1) and [(2)](#d-2) of this section.
  - (1) Employ waste minimization practices, as defined in [§ 63.11444](/cfr/40/63.11444.md); or
  - (2) Alternatively, comply with the equipment standard requirements described in [paragraph (c)(1)](#c-1) of this section or the management practice described in [paragraph (c)(2)](#c-2) of this section.
- (e) Surface applications (e.g., wet glazes) containing less than 0.1 (weight) percent clay ceramics metal HAP do not have to be considered in determination of the 227 Mg/yr (250 tpy) threshold for wet glaze usage.

## Notes

### Source

Source: 72 FR 73197, Dec. 26, 2007, unless otherwise noted.

### Authority

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

### Source

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