---
kind: "section"
citation: "40 C.F.R. § 59.625"
title: "40"
number: "59.625"
heading: "How do I select emission families?"
url: "https://uscodex.org/cfr/40/59.625"
---

# §59.625. How do I select emission families?

- (a) Divide your product line into families of portable fuel containers that are expected to have similar emission characteristics throughout the useful life.
- (b) **Group containers in the same emission family if they are the same in all the following aspects—**
  - (1) Type of material (including pigments, plasticizers, UV inhibitors, or other additives that may affect control of emissions).
  - (2) **Production method.**
  - (3) **Spout and cap design.**
  - (4) **Gasket material and design.**
  - (5) **Emission control strategy.**
  - (6) **Strategy for venting pressure.**
- (c) You may subdivide a group of containers that is identical under [paragraph (b)](#b) of this section into different emission families if you show the expected emission characteristics are different.
- (d) You may group containers that are not identical with respect to the things listed in [paragraph (b)](#b) of this section in the same emission family if you show that their emission characteristics will be similar throughout their useful life.

## Notes

### Amendments

[72 FR 8533, Feb. 26, 2007, as amended at 80 FR 9089, Feb. 19, 2015]

### Source

Source: 72 FR 8533, Feb. 26, 2007, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7414 and 7511b(e).

### Source

Source: 64 FR 48815, Sept. 11, 1998, unless otherwise noted.

### Amendments

[72 FR 8533, Feb. 26, 2007, as amended at 80 FR 9089, Feb. 19, 2015]