---
kind: "section"
citation: "40 C.F.R. § 63.11975"
title: "40"
number: "63.11975"
heading: "What are my continuous compliance requirements for process wastewater?"
url: "https://uscodex.org/cfr/40/63.11975"
---

# §63.11975. What are my continuous compliance requirements for process wastewater?

- (a) For each process wastewater stream that must be treated to reduce the concentration of vinyl chloride or total non-vinyl chloride organic HAP as specified in § [63.11965(b)](/cfr/40/63.11965.md?p=b) and [(c)](/cfr/40/63.11965.md?p=c), you must demonstrate continuous compliance as specified in [paragraph (b)](#b) of this section. For each process wastewater stream for which you initially determine in [§ 63.11970(b)](/cfr/40/63.11970.md?p=b) that treatment is not required to reduce either vinyl chloride or total non-vinyl chloride organic HAP concentration, you must demonstrate continuous compliance as specified in [paragraph (c)](#c) of this section.
- (b) For each process wastewater stream that must be treated according to [§ 63.11965(b)](/cfr/40/63.11965.md?p=b), you must demonstrate continuous compliance with the emission limits for vinyl chloride and total non-vinyl chloride organic HAP specified in Table 1 or 2 to this subpart by following the procedures specified in paragraphs [(b)(1)](#b-1) and [(2)](#b-2) of this section.
  - (1) Following your demonstration of initial compliance in [§ 63.11970(a)](/cfr/40/63.11970.md?p=a), make monthly measurements of the vinyl chloride and total non-vinyl chloride organic HAP concentrations using the procedures and methods specified in § [63.11965(b)(1)](/cfr/40/63.11965.md?p=b-1) and [(2)](/cfr/40/63.11965.md?p=b-2).
  - (2) You must demonstrate continuous compliance with the emission limits in Table 1 or 2 to this subpart on a monthly basis, using the monthly concentration measurement specified in [paragraph (b)(1)](#b-1) of this section.
- (c) For each wastewater stream for which you initially determine in [§ 63.11970(b)](/cfr/40/63.11970.md?p=b) that treatment is not required to reduce the vinyl chloride or total non-vinyl chloride organic HAP concentration, you must demonstrate continuous compliance as specified in paragraphs [(c)(1)](#c-1) and [(2)](#c-2) of this section.
  - (1) Conduct annual performance tests, measuring the vinyl chloride and total non-vinyl chloride organic HAP concentrations using the procedures and methods specified in § [63.11965(b)(1)](/cfr/40/63.11965.md?p=b-1) and [(2)](/cfr/40/63.11965.md?p=b-2).
  - (2) If any annual performance test conducted as specified in [paragraph (c)(1)](#c-1) of this section results in a concentration of vinyl chloride or total non-vinyl chloride organic HAP in the process wastewater stream that is greater than or equal to the emission limits in Table 1 or 2 to this subpart, then you must meet the requirements of [§ 63.11965(c)](/cfr/40/63.11965.md?p=c) and you must demonstrate initial and continuous compliance as specified in [§ 63.11970](/cfr/40/63.11970.md) and this section.

## Notes

### Source

Source: 77 FR 22906, Apr. 17, 2012, unless otherwise noted.

### Authority

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

### Source

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