Laws & Regulations
-
Heavy-duty Greenhouse Gas “Phase 3” for Model Years 2027 and Later - Notice of Proposed Rulemaking
EPA proposes to set new, more ambitious emissions standards for heavy-duty vehicles for model year (MY) 2027 and later.
-
Confirmatory Testing Setup Documents for Small Spark-Ignition (SI) Engines
Use these test setup documents to provide information to EPA for confirmatory testing.
-
Compliance Activity Reports for Vehicles and Engines
EPA uses a variety of testing and reporting programs to monitor compliance with emissions regulations.
-
CSV Import Template for Heavy-Duty Vehicle GHG Averaging, Banking, and Trading (ABT)
Template for year-end reports under the Heavy-Duty Tractors and Vocational Vehicles greenhouse gas (GHG) ABT.
-
System Documentation for Nonroad Compression-Ignition (NRCI) Engines
Use these files for the NRCI module in EV-CIS.
-
Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2015
This page provides manufacturer-run in-use testing program data from heavy-duty diesel engine manufacturers in compliance with 40 CFR 86 Subpart T for Test Year 2015.
-
Register or Update a Fuel or Fuel Additive Request under 40 CFR Part 79
Electronic registration instructions for fuel manufacturers to submit fuel requests in OTAQREG.
-
Instructions for Diesel Fuel Test Method Spreadsheet
These instructions are for use by those parties that need to qualify a facility/test method for measuring the concentration of sulfur in on road or nonroad diesel fuel additives and/or diesel fuel.
-
Sulfur in Gasoline Spreadsheet Example Key for Requirements at 40 CFR 80.47(b)(1) and 80.47(b)(2)
This guidance deals with the self-qualification of analytical test methods at a testing facility for measuring sulfur in gasoline to meet precision requirements codified in regulations.
-
Sulfur in Butane Spreadsheet Example Key for Requirements at 40 CFR 80.47(c)(1) and 80.47(c)(2)
This guidance deals with the self-qualification of analytical test methods at a testing facility for measuring sulfur in butane to meet precision requirements codified in regulations.
-
Distillation of Gasoline Spreadsheet Example Key for Requirements at 40 CFR 80.47(h) and 80.47(l)
This guidance deals with the self-qualification of analytical test methods at a testing facility for measuring distillation of gasoline to meet precision requirements codified in regulations.
-
Aromatic Content in Diesel Spreadsheet Example Key for Requirements at 40 CFR 80.47(j) and 80.47(l)
This guidance deals with the self-qualification of analytical test methods at a testing facility for measuring aromatic content in diesel to meet precision requirements codified in regulations.
-
Guidance to Parties Submitting Round-Robin Data to Support Requests for Approval of Alternate Non-VCSB Test Methods
This guidance is for parties to submit accuracy and precision information for determining compliance for non-VCSB test methods.
-
California Waiver Requests for Heavy-Duty Vehicle Emission Regulations
EPA issues a decision that grants two waivers of preemption regarding four California Air Resource Board (CARB) regulations related to California’s heavy-duty vehicle and engine emission standards.
-
Final Rule: One National Program on Federal Preemption of State Fuel Economy Standards
EPA and U.S. Department of Transportation finalize One National Program Rule on Federal Preemption of State Fuel Economy Standards.
-
Basic Information on Fuel Economy Labeling
Basic fuel economy information about the fuel economy labels (window stickers) that appear on cars and light trucks.
-
Submit SIPs Online
States now have the option of submitting SIPs electronically to EPA. This is the EPA’s preferred method for air agencies to make SIP submissions.
-
Public Webinar on Proposed TSCA Data Reporting Rule
This page has info on the TSCA data reporting rule webinar that took place july 27 2021
-
2020 CDR National Review
This fact sheet provides information on existing Chemical Data Reporting (CDR) rule requirements related to byproducts reporting by persons who manufacture printed circuit boards and may be subject to CDR.