Science & Technology

EPA Requests Public Comments on Candidates for Letter Peer Review of White Paper for Asbestos Part 2 Risk Evaluation under TSCA

The EPA is opening a 15-day comment period to request input from the public on candidates under consideration to review the 2023 white paper on asbestos.

Federal Register: Toxic Substances; 1,2- Dichloropropane; Testing Requirements

The EPA (also Agency) is issuing a final test rule under section 4(a) of the Toxic Substances (TSCA) that requires manufacturers and processors of 1,2-dichloropropane (DCP CAS Number 78-87—5) to test this chemical.

Tetrabromobisphenol A; Final Test Rule

EPA is issuing a final test rule, under section 4 of the Toxic Substances Control Act (TSCA), requiring manufacturers and processors of tetrabromobisphenol A (TBBPA. CAS No. 79—94—7) to perform testing for chemical fate and environmental effects.

Cumulative Risk Assessment Under the Toxic Substances Control Act

Fenceline Screening Methodology

Information About the Green Chemistry Challenge

Information for the Green Chemistry Challenge program and awards.

Green Chemistry Challenge Winners

List of award winners with links to summaries of winning technologies and links to list of winners by technology and by industry sector.

Appendix A: Re-Powering Screened Sites Attribute Table Details

Section 6 of 7 of the Re-Powering Mapper User Guide and Data Documentation. This section provides data attribute information, a brief description of each attribute, and its data type.

Summary of Hawai'i's Water Reuse Guideline or Regulation for Onsite Non-Potable Water Reuse

Hawai'i (State Regulation) | Source water: Onsite collected waters | End use: Onsite non-potable reuse

Wildfire Smoke and Your Patients' Health

This wildfire smoke course is intended to help health care professionals, nurses, and asthma educators understand the health effects associated with wildfire smoke and steps to advise patients to take to reduce exposure both before or during a wildfire.

Clean Air Status and Trends Network (CASTNET)

The Clean Air Status and Trends Network (CASTNET) is a national air quality monitoring network designed to provide data to assess trends in air quality, atmospheric deposition, and ecological effects due to changes in air pollutant emissions.

Final Mark-4 Study Science and Ethics Presentation

Frequent Questions about the Implementation Study of R2 and e-Stewards Certification Programs

Frequent Questions about the Implementation Study of R2 & e-Stewards® Certification Programs

Emergency Response for Drinking Water and Wastewater Utilities

The website provides critical information to drinking water and wastewater utilities responding to an emergency.

CCL 5 Technical Support Documents

Read EPA's technical support documents for developing CCL 5.

Documents about Measurement Competency Under Assistance Agreements

These documents discuss the EPA's policy requiring organizations generating or using environmental data under certain Agency-funded assistance agreements.

Documents about Measurement Competency Under Acquisition Agreements

These document convey EPA policy requiring that organizations generating environmental data under Agency-funded acquisitions submit documentation of their competency, which may include participation in applicable certification and/or accreditation programs