---
kind: "section"
citation: "40 C.F.R. § 1065.940"
title: "40"
number: "1065.940"
heading: "Emission calculations."
url: "https://uscodex.org/cfr/40/1065.940"
---

# §1065.940. Emission calculations.

- (a) Perform emission calculations as described in [§ 1065.650](/cfr/40/1065.650.md) to calculate brake-specific emissions for each test interval using any applicable information and instructions in the standard-setting part.
- (b) You may use a fixed molar mass for the diluted exhaust mixture for field testing. Determine this fixed value by engineering analysis.

## Notes

### Amendments

[75 FR 68467, Nov. 8, 2010]

### Authority

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

### Source

Source: 70 FR 40516, July 13, 2005, unless otherwise noted.

### Amendments

[75 FR 68467, Nov. 8, 2010]