Learn the Issues

Download the 2024 Automotive Trends Report

Download the light-duty vehicle carbon dioxide and fuel economy trends report.

Guidance on the Preparation of Demonstrations in Support of Requests to Exclude Ambient Air Quality Data Influenced by High Wind Dust Events Under the 2016 Exceptional Events Rule

High Wind Dust Event Guidance

CIMC - How to Link to the Map or Site Profiles

This page provides information on how to link to a particular view of the Cleanups in My Community map, or link to a particular cleanup profile from your web page.

CHP Screening Tool

Download the CHP Emissions Calculator, a tool that calculates the difference between the anticipated carbon dioxide, methane, nitrous oxide, sulfur dioxide, and nitrogen oxide emissions from a CHP system to those of a separate heat and power system.

CHP Technologies

Learn about CHP technologies, including reciprocating engines, combustion turbines, steam turbines, microturbines, fuel cells, and waste heat to power. Access the Catalog of CHP Technologies and the Biomass CHP Catalog of Technologies.

Effects of Acid Rain

Overview of the effects of acid rain on ecosystems, plant life, wildlife and man-made structures.

Radiological Emergency Response

This page describes the activities of EPA's Radiological Emergency Response Team (RERT) and provides links to information about radiological emergency response.

Air Emissions Monitoring for Permits

Operating permits document how air pollution sources will demonstrate compliance with emission limits and also how air pollution sources will monitor, either periodically or continuously, their compliance with emission limits and all other requirements.

Electronic Reporting Process for Stationary Sources Presentations and Webinars

This page has links to training videos, powerpoint presentations and webinars supporting the Electronic Reporting Process for stationary sources, using the ERT, CEDRI and WebFIRE.

AP-42 Chapter 11: Mineral Products - Frequent Questions

AP 42 Frequent Questions

Final Revisions to AP-42 Chapter 7, Section 7.1 - Organic Liquid Storage Tanks

Final Revisions to Chapter 7, Section 7.1

Emissions Estimation Protocol for Petroleum Refineries

Emission Estimation Protocol for Petroleum Refineries

New and Revised Emissions Factors for Flares and New Emissions Factors for Certain Refinery Process Units and Determination for No Changes to VOC Emissions Factors for Tanks and Wastewater Treatment Systems

New and Revised Emission Factors for Flares and New Emission Factors for Certain Refinery Process Units and Determination for No Changes to VOC Emission Factors for Tanks and Wastewater Treatment Systems

New Emissions Factors for Enclosed Ground Flares

Radionuclide Basics: Americium-241

Americium (chemical symbol Am) is a man-made radioactive metal that is solid under normal conditions. Exposure to a significant amount of Am-241 is generally unlikely. Small amounts are found in the soil, plants and water from nuclear weapons testing.