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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter U - Air Pollution Controls |
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Part 1065 - Engine-Testing Procedures |
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Subpart L - Methods for Unregulated and Special Pollutants and Additional Procedures |
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Smoke Opacity |
§ 1065.1123 - General provisions for determining exhaust opacity.
Latest version.
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§ 1065.1123 General provisions for determining exhaust opacity.
The provisions of § 1065.1125 describe system specifications for measuring percent opacity of exhaust for all types of engines. The provisions of § 1065.1127 describe how to use such a system to determine percent opacity of engine exhaust for applications other than locomotives. See 40 CFR 1033.525 for measurement procedures for locomotives.