PART 204 — NOISE EMISSION STANDARDS FOR CONSTRUCTION EQUIPMENT [ 40 CFR204 ]PART204 — NOISE EMISSION STANDARDS FOR CONSTRUCTION EQUIPMENT [40 CFR 204 ]Table of ContentsSubpart A — General Provisions§ 204.1 — General applicability.§ 204.2 — Definitions.[ Last FR update: 12/28/1982 ]§ 204.3 — Number and gender.§ 204.4 — Inspection and monitoring.[ Last FR update: 12/28/1982 ]§ 204.5 — Exemptions.§ 204.5-1 — Testing exemption.[ Last FR update: 12/28/1982 ]§ 204.5-2 — National security exemptions.[ Last FR update: 12/28/1982 ]§ 204.5-3 — Export exemptions.[ Last FR update: 12/28/1982 ]Subpart B — Portable Air Compressors§ 204.50 — Applicability.§ 204.51 — Definitions.[ Last FR update: 12/28/1982 ]§ 204.52 — Portable air compressor noiseemission standard.§ 204.54 — Test procedures.[ Last FR update: 12/28/1982 ]§ 204.55 — Requirements.§ 204.55-1 — General standards.[ Last FR update: 12/28/1982 ]§ 204.55-2 — Requiremen...