Code of Federal Regulations (Last Updated: October 10, 2024) |
Title 40 - Protection of Environment |
Chapter I - Environmental Protection Agency |
SubChapter C - Air Programs |
Part 90 - Control of Emissions from Nonroad Spark-Ignition Engines at or Below 19 Kilowatts |
§ 90.1 - Applicability. |
Subpart A - General |
§ 90.2 - Effective dates. |
§ 90.3 - Definitions. |
§ 90.4 - Treatment of confidential information. |
§ 90.5 - Acronyms and abbreviations. |
§ 90.6 - Table and figure numbering; position. |
§ 90.7 - Reference materials. |
Subpart B - Emission Standards and Certification Provisions |
§ 90.101 - Applicability. |
§ 90.102 - Definitions. |
§ 90.103 - Exhaust emission standards. |
§ 90.104 - Compliance with emission standards. |
§ 90.105 - Useful life periods for Phase 2 engines. |
§ 90.106 - Certificate of conformity. |
§ 90.107 - Application for certification. |
§ 90.108 - Certification. |
§ 90.109 - Requirement of certification - closed crankcase. |
§ 90.110 - Requirement of certification - prohibited controls. |
§ 90.111 - Requirement of certification - prohibition of defeat devices. |
§ 90.112 - Requirement of certification - adjustable parameters. |
§ 90.113 - In-use testing program for Phase 1 engines. |
§ 90.114 - Requirement of certification - engine information label. |
§ 90.115 - Requirement of certification - supplying production engines upon request. |
§ 90.116 - Certification procedure - determining engine displacement, engine class, and engine families. |
§ 90.117 - Certification procedure - test engine selection. |
§ 90.118 - Certification procedure - service accumulation and usage of deterioration factors. |
§ 90.119 - Certification procedure - testing. |
§ 90.120 - Certification procedure - use of special test procedures. |
§ 90.121 - Certification procedure - recordkeeping. |
§ 90.122 - Amending the application and certificate of conformity. |
§ 90.123 - Denial, revocation of certificate of conformity. |
§ 90.124 - Request for hearing. |
§ 90.125 - Hearing procedures. |
§ 90.126 - Right of entry and access. |
§ 90.127 - Fuel line permeation from nonhandheld engines and equipment. |
§ 90.128 - Installation instructions. |
§ 90.129 - Fuel tank permeation from handheld engines and equipment. |
Subpart C - Certification Averaging, Banking, and Trading Provisions |
§ 90.201 - Applicability. |
§ 90.202 - Definitions. |
§ 90.203 - General provisions. |
§ 90.204 - Averaging. |
§ 90.205 - Banking. |
§ 90.206 - Trading. |
§ 90.207 - Credit calculation and manufacturer compliance with emission standards. |
§ 90.208 - Certification. |
§ 90.209 - Maintenance of records. |
§ 90.210 - End-of-year and final reports. |
§ 90.211 - Request for hearing. |
§ 90.212 - Optional transition year averaging, banking, and trading program for Phase 2 handheld engines. |
§ 90.213 - Averaging under the optional program. |
§ 90.214 - Banking under the optional program. |
§ 90.215 - Trading under the optional program. |
§ 90.216 - Credit calculation and manufacturer compliance with emission standards under the optional program. |
§ 90.217 - Certification under the optional program. |
§ 90.218 - Maintenance of records under the optional program. |
§ 90.219 - End-of-year and final reports under the optional program. |
§ 90.220 - Request for hearing. |
Subpart D - Emission Test Equipment Provisions |
§ 90.301 - Applicability. |
§ 90.302 - Definitions. |
§ 90.303 - Symbols, acronyms, abbreviations. |
§ 90.304 - Test equipment overview. |
§ 90.305 - Dynamometer specifications and calibration accuracy. |
§ 90.306 - Dynamometer torque cell calibration. |
§ 90.307 - Engine cooling system. |
§ 90.308 - Lubricating oil and test fuels. |
§ 90.309 - Engine intake air temperature measurement. |
§ 90.310 - Engine intake air humidity measurement. |
§ 90.311 - Test conditions. |
§ 90.312 - Analytical gases. |
§ 90.313 - Analyzers required. |
§ 90.314 - Analyzer accuracy and specifications. |
§ 90.315 - Analyzer initial calibration. |
§ 90.316 - Hydrocarbon analyzer calibration. |
§ 90.317 - Carbon monoxide analyzer calibration. |
§ 90.318 - Oxides of nitrogen analyzer calibration. |
§ 90.319 - NOX converter check. |
§ 90.320 - Carbon dioxide analyzer calibration. |
§ 90.321 - NDIR analyzer calibration. |
§ 90.322 - Calibration of other equipment. |
§ 90.323 - Analyzer bench checks. |
§ 90.324 - Analyzer leakage check. |
§ 90.325 - Analyzer interference checks. |
§ 90.326 - Pre- and post-test analyzer calibration. |
§ 90.327 - Sampling system requirements. |
§ 90.328 - Measurement equipment accuracy/calibration frequency table. |
§ 90.329 - Catalyst thermal stress test. |
Appendix A to Subpart D of Part 90 - Tables |
Appendix B to Subpart D of Part 90 - Figures |
Subpart E - Gaseous Exhaust Test Procedures |
§ 90.401 - Applicability. |
§ 90.402 - Definitions. |
§ 90.403 - Symbols, acronyms, and abbreviations. |
§ 90.404 - Test procedure overview. |
§ 90.405 - Recorded information. |
§ 90.406 - Engine parameters to be measured and recorded. |
§ 90.407 - Engine inlet and exhaust systems. |
§ 90.408 - Pre-test procedures. |
§ 90.409 - Engine dynamometer test run. |
§ 90.410 - Engine test cycle. |
§ 90.411 - Post-test analyzer procedures. |
§ 90.412 - Data logging. |
§ 90.413 - Exhaust sample procedure - gaseous components. |
§ 90.414 - Raw gaseous exhaust sampling and analytical system description. |
§ 90.415 - Raw gaseous sampling procedures. |
§ 90.416 - Intake air flow measurement specifications. |
§ 90.417 - Fuel flow measurement specifications. |
§ 90.418 - Data evaluation for gaseous emissions. |
§ 90.419 - Raw emission sampling calculations - gasoline fueled engines. |
§ 90.420 - CVS concept of exhaust gas sampling system. |
§ 90.421 - Dilute gaseous exhaust sampling and analytical system description. |
§ 90.422 - Background sample. |
§ 90.423 - Exhaust gas analytical system; CVS grab sample. |
§ 90.424 - Dilute sampling procedures - CVS calibration. |
§ 90.425 - CVS calibration frequency. |
§ 90.426 - Dilute emission sampling calculations - gasoline fueled engines. |
§ 90.427 - Catalyst thermal stress resistance evaluation. |
Appendix A to Subpart E of Part 90 - Tables |
Appendix B to Subpart E of Part 90 - Figures |
Subpart F - Selective Enforcement Auditing |
§ 90.501 - Applicability. |
§ 90.502 - Definitions. |
§ 90.503 - Test orders. |
§ 90.504 - Testing by the Administrator. |
§ 90.505 - Maintenance of records; submittal of information. |
§ 90.506 - Right of entry and access. |
§ 90.507 - Sample selection. |
§ 90.508 - Test procedures. |
§ 90.509 - Calculation and reporting of test results. |
§ 90.510 - Compliance with acceptable quality level and passing and failing criteria for selective enforcement audits. |
§ 90.511 - Suspension and revocation of certificates of conformity. |
§ 90.512 - Request for public hearing. |
§ 90.513 - Administrative procedures for public hearing. |
§ 90.514 - Hearing procedures. |
§ 90.515 - Appeal of hearing decision. |
§ 90.516 - Treatment of confidential information. |
Appendix A to Subpart F of Part 90 - Sampling Plans for Selective Enforcement Auditing of Small Nonroad Engines |
Subpart G - Importation of Nonconforming Engines |
§ 90.601 - Applicability. |
§ 90.602 - Definitions. |
§ 90.603 - [Reserved] |
§ 90.604 - General requirements. |
§ 90.611 - Importation for purposes other than resale. |
§ 90.612 - Exemptions and exclusions. |
§ 90.613 - Prohibited acts; penalties. |
§ 90.614 - Treatment of confidential information. |
§ 90.615 - Model year restrictions related to imported engines and equipment. |
§§ 90.605--90.610 - [Reserved] |
Subpart H - Manufacturer Production Line Testing Program |
§ 90.701 - Applicability. |
§ 90.702 - Definitions. |
§ 90.703 - Production line testing by the manufacturer. |
§ 90.704 - Maintenance of records; submission of information. |
§ 90.705 - Right of entry and access. |
§ 90.706 - Engine sample selection. |
§ 90.707 - Test procedures. |
§ 90.708 - Cumulative Sum (CumSum) procedure. |
§ 90.709 - Calculation and reporting of test results. |
§ 90.710 - Compliance with criteria for production line testing. |
§ 90.711 - Suspension and revocation of certificates of conformity. |
§ 90.712 - Request for public hearing. |
§ 90.713 - Administrative procedures for public hearing. |
Subpart I - Emission-Related Defect Reporting Requirements, Voluntary Emission Recall Program, Ordered Recalls |
§ 90.801 - Applicability. |
§ 90.802 - Definitions. |
§ 90.803 - Emission defect information report. |
§ 90.804 - Voluntary emissions recall. |
§ 90.805 - Reports, voluntary recall plan filing, record retention. |
§ 90.806 - Responsibility under other legal provisions preserved. |
§ 90.807 - Disclaimer of production warranty applicability. |
§ 90.808 - Ordered recall provisions. |
Subpart J - Exclusion and Exemption of Nonroad Engines from Regulations |
§ 90.901 - Applicability. |
§ 90.902 - Definitions. |
§ 90.903 - Exclusions, application of section 216 (10) and (11) of the Act. |
§ 90.904 - Who may request an exemption. |
§ 90.905 - Testing exemption. |
§ 90.906 - Manufacturer-owned exemption and precertification exemption. |
§ 90.907 - Display exemption. |
§ 90.908 - National security exemption. |
§ 90.909 - Export exemptions. |
§ 90.910 - Granting of exemptions. |
§ 90.911 - Submission of exemption requests. |
§ 90.912 - Treatment of confidential information. |
§ 90.913 - Exemption for engines certified to standards for large SI engines. |
Subpart K - Prohibited Acts and General Enforcement Provisions |
§ 90.1001 - Applicability. |
§ 90.1002 - Definitions. |
§ 90.1003 - Prohibited acts. |
§ 90.1004 - General enforcement provisions. |
§ 90.1005 - Injunction proceedings for prohibited acts. |
§ 90.1006 - Penalties. |
§ 90.1007 - Bonding requirements related to compliance, enforcement, and warranty assurance. |
Subpart L - Emission Warranty and Maintenance Instructions |
§ 90.1101 - Applicability. |
§ 90.1102 - Definitions. |
§ 90.1103 - Emission warranty, warranty period. |
§ 90.1104 - Furnishing of maintenance instructions to ultimate purchaser. |
Subpart M - Voluntary In-Use Testing |
§ 90.1201 - Applicability. |
§ 90.1202 - Definitions. |
§ 90.1203 - Voluntary Manufacturer In-Use Testing Program. |
§ 90.1204 - Maintenance, aging and testing of engines. |
§ 90.1205 - In-use test program reporting requirements. |
§ 90.1206 - [Reserved] |
§ 90.1207 - Entry and access. |
§§ 90.1208--90.1249 - [Reserved] |
§§ 90.2--90.3 - [Reserved] |