---
kind: "section"
citation: "40 C.F.R. § 63.9285"
title: "40"
number: "63.9285"
heading: "Am I subject to this subpart?"
url: "https://uscodex.org/cfr/40/63.9285"
---

# §63.9285. Am I subject to this subpart?


You are subject to this subpart if you own or operate an engine test cell/stand that is located at a major source of HAP emissions.

- (a) An engine test cell/stand is any apparatus used for testing uninstalled stationary or uninstalled mobile (motive) engines.
- (b) An uninstalled engine is an engine that is not installed in, or an integrated part of, the final product.
- (c) A major source of HAP emissions is a plant site that emits or has the potential to emit any single HAP at a rate of 10 tons (9.07 megagrams) or more per year or any combination of HAP at a rate of 25 tons (22.68 megagrams) or more per year.

## Notes

### Source

Source: 68 FR 28785, May 27, 2003, unless otherwise noted.

### Authority

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

### Source

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