---
kind: "section"
citation: "40 C.F.R. § 63.1092"
title: "40"
number: "63.1092"
heading: "What are the major differences between the requirements of 40 CFR part 61, subpart FF, and the waste requirements for ethylene production sources?"
url: "https://uscodex.org/cfr/40/63.1092"
---

# §63.1092. What are the major differences between the requirements of 40 CFR part 61, subpart FF, and the waste requirements for ethylene production sources?


The major differences between the requirements of [40 CFR part 61](/cfr/40/part61.md), [subpart FF](/cfr/40/subpartFF.md), and the requirements for ethylene production sources are listed in [paragraphs (a) through (d)](#a..d) of this section.

- (a) The requirements for ethylene production sources apply to all ethylene production sources that are part of a major source. The requirements do not include a provision to exempt sources with a total annual benzene quantity less than 10 megagrams per year (Mg/yr) from control requirements.
- (b) The requirements for ethylene production sources apply to continuous butadiene waste streams which do not contain benzene quantities that would make them subject to the management and treatment requirements of [40 CFR part 61](/cfr/40/part61.md), subpart FF.
- (c) The requirements for ethylene production sources do not include the compliance options at 40 CFR [61.342(c)(3)(ii)](/cfr/40/61.342.md?p=c-3-ii), [(d)](/cfr/40/61.342.md?p=c-3-d) and [(e)](/cfr/40/61.342.md?p=c-3-e) for sources with a total annual benzene quantity less than 10 Mg/yr.
- (d) If you transfer waste off-site, you must comply with the requirements in [§ 63.1096](/cfr/40/63.1096.md) rather than [40 CFR 61.342(f)](/cfr/40/61.342.md?p=f).

## Notes

### Source

Source: 67 FR 46271, July 12, 2002, unless otherwise noted.

### Authority

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

### Source

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