---
kind: "section"
citation: "40 C.F.R. § 61.63"
title: "40"
number: "61.63"
heading: "Emission standard for vinyl chloride plants."
url: "https://uscodex.org/cfr/40/61.63"
---

# §61.63. Emission standard for vinyl chloride plants.


An owner or operator of a vinyl chloride plant shall comply with the requirements of this section and [§ 61.65](/cfr/40/61.65.md).

- (a) **Vinyl chloride formation and purification—** The concentration of vinyl chloride in each exhaust gas stream from any equipment used in vinyl chloride formation and/or purification is not to exceed 10 ppm (average for 3-hour period), except as provided in [§ 61.65(a)](/cfr/40/61.65.md?p=a). This requirement does not preclude combining of exhaust gas streams provided the combined steam is ducted through a control system from which the concentration of vinyl chloride in the exhaust gases does not exceed 10 ppm, or equivalent as provided in [§ 61.66](/cfr/40/61.66.md). This requirement does not apply to equipment that has been opened, is out of operation, and met the requirement in [§ 61.65(b)(6)(i)](/cfr/40/61.65.md?p=b-6-i) before being opened.

## Notes

### Amendments

[51 FR 34909, Sept. 30, 1986]

### Source

Source: 41 FR 46564, Oct. 21, 1976, unless otherwise noted.

### Authority

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

### Source

Source: 38 FR 8826, Apr. 6, 1973, unless otherwise noted.

### Amendments

[51 FR 34909, Sept. 30, 1986]