Science & Technology

Register for EPA’s Webinar for Building Code Officials on Lead-Based Paint Regulations

EPA is holding a public webinar for building code officials on Thursday, October 16, 2025, from 2-3:30 p.m. ET to provide information on lead-based paint regulations.

Presidential Green Chemistry Challenge: 2005 Academic Award

Presidential Green Chemistry Challenge 2005 award winner, Professor Robin D. Rogers, used ionic liquids to dissolve and process cellulose from wood, cloth, or paper to make new biorenewable or biocompatible materials.

EPA Adds Additional PFAS to the Toxics Release Inventory

EPA announced the automatic addition of a per- and polyfluoroalkyl substance (PFAS) to the list of chemicals covered by the Toxics Release Inventory (TRI).

Liberty Utilities Methane Challenge Partner Profile

Partner profile that provides an overview of the company and summary information about its involvement in EPA's voluntary methane programs.

eCDRweb User Guide–Primary Support

This document presents the user guide for the Office of Pollution Prevention and Toxics’ (OPPT) e-CDR web tool. E-CDRweb is the electronic, web-based tool provided by the Environmental Protection Agency (EPA) for the submission of Chemical Data Reporting (CDR) information. This document is the user guide for the Primary Support user of the e-CDRweb tool.

Meeting Information for the June 11-14, 2019 Scientific Advisory Panel

Meeting Materials for the July 17-20, 2018 Scientific Advisory Panel

E-FAST - Exposure and Fate Assessment Screening Tool 2014 Documentation Manual

E-FAST 2014 Documentation Manual

Presidential Green Chemistry Challenge: 2008 Greener Reaction Conditions Award

Presidential Green Chemistry Challenge 2008 award winner, Nalco Company, developed 3D TRASAR technology to monitor the condition of cooling water continuously and add chemicals only when needed, saving water and energy.

A to Z Index of Hazardous Waste Topics

A comprehensive list of the content available and maintained on the EPA's hazardous waste web site, listed alphabetically.

Virucidal Effectiveness Testing Using Feline Calicivirus as Surrogate for Norovirus

These documents describe the effectiveness test using Feline Calicivirus as Surrogate for Norovirus, including initial and confirmatory testing and testing with pre-saturated or impregnated towelettes.

Stakeholder Webinar (Nov. 2021): Natural Gas & Petroleum Systems in the GHG Inventory

2021 GHGI September 2021 Webinar Supporting Materials

Natural Gas and Petroleum Systems in the GHG Inventory: Additional Information on the 1990-2014 GHG Inventory (published April 2016)

View updates under consideration for the 1990-2014 Inventory of Greenhouse Gas Emissions and Sinks.

Stakeholder Workshop Presentations: EPA Greenhouse Gas Data on Petroleum and Natural Gas Systems

View the summary and presentations from the November 2015 stakeholder workshop on greenhouse gas data on petroleum and natural gas systems from the Greenhouse Gas Reporting Program and U.S. Greenhouse Gas Inventory of Emissions and Sinks.

Natural Gas and Petroleum Systems in the GHG Inventory: Memos Previously Posted in the Development of the 1990-2014 GHG Inventory (published April 2016)

View previously posted updates under consideration for the 1990-2014 Inventory of Greenhouse Gas Emissions and Sinks.

Natural Gas and Petroleum Systems in the GHG Inventory: Memos Previously Posted in Development of the 1990-2015 Inventory

EPA memo describing revisions under consideration to the estimates of greenhouse gas emissions from natural gas and petroleum systems production, as presented in the U.S. Inventory of Greenhouse Gases and Sinks.