Science & Technology

Dispersion Modeling Applications

Provides access to modeling applications involving dispersion models, including model comparisons and source culpability studies.

Chemical Safety Alert: Rupture Hazard from Liquid Storage Tanks

This alert describes some of the tank failures and identifies standards and precautions that apply to above ground liquid storage tanks. Examples here held liquid fertilizers and had defective welds.

RMP Guidance for Chemical Distributors - Appendix D: OSHA Guidance on PSM

Guidance on the Process Safety Management standard says information (including MSDS) about chemicals, including process intermediates, must enable accurate assessment of fire/explosion characteristics, reactivity hazards, and corrosing/erosion effects.

Chemical Safety Alert: First Responders’ Environmental Liability Due To Mass Decontamination Runoff

CERCLA's good Samaritan provisions protect responders such as the Chemical Weapons Improved Response Team during lifesaving actions. Once imminent threats are addressed, responders should contain contamination and avoid/mitigate environmental consequences.

2016 Natural Gas STAR Program Accomplishments

2015 methane emissions reductions reported by domestic Natural Gas STAR Program partners.

Chemical Safety Alert: Rupture Hazard of Pressure Vessels

Pressure vessels or boilers can fail catastrophically if they are not properly designed, constructed, operated, inspected, tested, or repaired. Risk increases if vessels contents are toxic, corrosive, reactive, or flammable.

2011v6.3, Technical Support Document (TSD) Update for 2023

The 2011v6.3 emissions modeling platform is based on the 2011NEIv2 and was used for the final 2015 ozone NAAQS and the proposed Update to the Cross-State Air Pollution Rule.

Turning Water Data into Public Information Webcast

Watershed Academy webcast on turning water data into information for the public

Restoring Lake Champlain Webcast

Join us for an upcoming webcast on restoration efforts for Lake Champlain.

Clean Water Act Module Part 1

History of the Clean Water Act and an introduction to Water Quality Standards

Flyer for the Nov. 8, 2018 Webcast

A Watershed Academy Webcast

Participatory Science Webcast Series

webcast on participatory science

Semiannual Report to Congress: October 1, 2018 - March 31, 2019

Report #EPA-350-R-19-001, May 2019. Midway through FY 2019, we pause to take stock of the progress that the EPA's OIG has made toward assisting the agency in the mission of improving human health and the environment.

Chemical Safety Alert: Identifying Chemical Reactivity Hazards Preliminary Screening Method

Introduces small-to-medium-sized facilities to a method developed by Center for Chemical Process Safety, based on a series of twelve yes-or-no questions to help determine hazards in warehousing, repackaging, blending, mixing, and processing.

Ethylene Oxide Data Summary from National Air Toxics Trends Stations and Urban Air Toxics Monitoring Program sites

Map of monitoring sites for Air Toxics and Urban Air Toxics

Download the 2021 Automotive Trends Report (previous year)

Light-Duty reports, tables and appendices for 1975-2020 carbon dioxide and fuel economy trends report.

Data for the Automotive Trends Report

Data for the light-duty vehicles, including EPA's criteria pollutant and GHG standards.

Chemical Safety Alert: Safe Storage and Handling of Swimming Pool Chemicals

Hazards of pool water treatment and maintenance chemicals (e.g., chlorine), and the protective measures pool owners should take to prevent fires, toxic vapor releases, and injuries. Triggered by improper wetting, mixing, or self-reactivity over time.

Manufacturer-Run In-Use Testing Program Data for Heavy-Duty Diesel Engines – Test Order Year 2010

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 2010.

Oil Spill Emergency Response – Dispersant Monitoring Fact Sheets

This series of fact sheets details how to meet monitoring requirements for dispersants used in oil spill response under Subpart J of the National Contingency Plan.