40 CFR § 1068.35 - 1068.35 Symbols, acronyms, and abbreviations.

---
identifier: "/us/cfr/t40/s1068.35"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 1068.35 - 1068.35   Symbols, acronyms, and abbreviations."
title_number: 40
title_name: "Protection of Environment"
section_number: "1068.35"
section_name: "1068.35   Symbols, acronyms, and abbreviations."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "U"
subchapter_name: "AIR POLLUTION CONTROLS"
part_number: "1068"
part_name: "GENERAL COMPLIANCE PROVISIONS FOR HIGHWAY, STATIONARY, AND NONROAD PROGRAMS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401-7671q."
regulatory_source: "73 FR 59344, Oct. 8, 2008, unless otherwise noted."
cfr_part: "1068"
---


# 1068.35 1068.35   Symbols, acronyms, and abbreviations.

The following symbols, acronyms, and abbreviations apply to this part:

$ U.S. dollars.

CFR Code of Federal Regulations.

disp engine displacement.

EPA Environmental Protection Agency.

kW kilowatt.

L/cyl liters per cylinder.

NARA National Archives and Records Administration.

NO<sub>X</sub> Oxides of nitrogen.

SAE Society of Automotive Engineers.

SEA selective enforcement audit.

U.S. United States.

U.S.C. United States Code.