Science & Technology

Chronology of EPA Emission Test Methods 2020

Lead (Pb) Standards - Federal Register Notices from Review Completed in 2016

Federal Register notices used to develop the current lead national ambient air quality standard.

Risk Assessment and Modeling - Air Toxics

Risk characterization as a description of the nature and magnitude of human or ecological risk and the attendant uncertainties.

EPA Scientists Find Association Between Air Pollution and Hospitalization Rates Among Heart Failure Patients

EPA scientists conducted a study that examined the relationship between air pollution and hospitalization rates among over 20,000 heart failure patients over a 12 year span.

The Sum of the Parts: Developing a Systems-Level Approach to Protect Children's Health

Two recent literature reviews show how EPA is advancing the total environment model as a new frontier in children’s environmental health research. This research helps to improve community health, particularly for children and other vulnerable groups.

Human Exposure Modeling - Databases to Support Exposure Modeling

Human exposure modeling relates pollutant concentrations in the larger environmental media to pollutant concentrations in the immediate exposure media. The models described here are available on other EPA websites.

SPECIATE Database Provides Important Resource for Air Quality Management

Every day, thousands of chemical pollutants are emitted into the air from a variety of sources such as motor vehicles, oil and gas operations, industrial processes, household product use, and smoke from fires, including wildfires and prescribed burning.

2021 Survey Methodology

Information about the 2021 survey design, data collection, and sampling.

Download TRIM.Expo Inhalation / APEX

TRIM.Expo Inhalation / APEX is an EPA human exposure model.

Understanding Public Perceptions and Demands of Aquatic Resources Can Support Sustainable Management Practices

EPA ecologist Joseph Flotemersch has been collaborating with partners from various institutes and universities around the world to examine why this social-ecological approach is essential for sustainable management.

2021 Scientific Integrity Survey Frequent Questions

14 frequently asked questions covering our survey purpose, methods, next steps, and contact

Particle Pollution and Cardiovascular Effects

Health Effects of PM in Patients with Cardiovascular Disease

Scenario Analysis of the Impact on Drinking Water Intakes from Bromide in the Discharge of Treated Oil and Gas Wastewater

EPA scientists created different scenarios for conventional commercial wastewater treatment plants that treat oil and gas wastewaters to evaluate the impact from bromide in discharges by the CWTP plants.

EPA response to RFC: Final Registration Eligibility science Chapter for Atrazine Environmental Fate and Effects Chapter

EPA response to the Request for Correction (RFC)

EPA response to Appeal to RFC: Alternative Control Techniques Document - Surface Coating of Automotive/Transportation and Business Machine Plastic Parts