---
kind: "section"
citation: "40 C.F.R. § 1042.107"
title: "40"
number: "1042.107"
heading: "Evaporative emission standards."
url: "https://uscodex.org/cfr/40/1042.107"
---

# §1042.107. Evaporative emission standards.

- (a) There are no evaporative emission standards for diesel-fueled engines, or engines using other nonvolatile or nonliquid fuels (for example, natural gas).
- (b) If an engine uses a volatile liquid fuel, such as methanol, the engine's fuel system and the vessel in which the engine is installed must meet the evaporative emission requirements of [40 CFR part 1045](/cfr/40/part1045.md) that apply with respect to spark-ignition engines. Manufacturers subject to evaporative emission standards must meet the requirements of [40 CFR 1045.112](/cfr/40/1045.112.md) as described in [40 CFR part 1060](/cfr/40/part1060.md) and do all the following things in the application for certification:
  - (1) **Describe how evaporative emissions are controlled.**
  - (2) Present test data to show that fuel systems and vessels meet the evaporative emission standards we specify in this section if you do not use design-based certification under [40 CFR 1060.240](/cfr/40/1060.240.md). Show these figures before and after applying deterioration factors, where applicable.

## Notes

### Amendments

[73 FR 59193, Oct. 8, 2008]

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Source

Source: 73 FR 37243, June 30, 2008, unless otherwise noted.

### Amendments

[73 FR 59193, Oct. 8, 2008]