U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 79Subpart F - Subpart F—Testing Requirements for Registration
§ 79.50 - Definitions.
§ 79.51 - General requirements and provisions.
§ 79.52 - Tier 1.
§ 79.53 - Tier 2.
§ 79.54 - Tier 3.
§ 79.55 - Base fuel specifications.
§ 79.56 - Fuel and fuel additive grouping system.
§ 79.57 - Emission generation.
§ 79.58 - Special provisions.
§ 79.59 - Reporting requirements.
§ 79.60 - Good laboratory practices (GLP) standards for inhalation exposure health effects testing.
§ 79.61 - Vehicle emissions inhalation exposure guideline.
§ 79.62 - Subchronic toxicity study with specific health effect assessments.
§ 79.63 - Fertility assessment/teratology.
§ 79.64 - In vivo micronucleus assay.
§ 79.65 - In vivo sister chromatid exchange assay.
§ 79.66 - Neuropathology assessment.
§ 79.67 - Glial fibrillary acidic protein assay.
§ 79.68 - Salmonella typhimurium reverse mutation assay.
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