Learn the Issues

Air Standards Delegations in EPA’s Pacific Southwest (Region 9)

Federal air regulations that have been delegated to state or local air pollution control agencies in Region 9

Central Metal Site Investigation: Frequently Asked Questions (FAQs)

Frequently asked questions about the Central Metal Site Investigation, Huntington Park, CA.

Radionuclide Basics: Cobalt-60

Cobalt (chemical symbol Co) is a hard, gray-blue metal that is solid under normal conditions. The most common radioactive isotope of cobalt is cobalt-60 (Co-60).

California Air Resources Board rejects VW 2-liter diesel recall plan and issues Notice of Violation

California Air Resources Board rejects VW 2-liter diesel recall plan and issues Notice of Violation (January 12, 2016)

Landscape Photo Gallery

Water-smart landscapes can be beautiful and water-efficient. Check out landscapes from across the country for design inspiration.

Vehicles on the Road (Text Only)

Learn about different types of vehicles on the road.

Webinar: On the Road to Sustainable Freight: Where do Electric Trucks Fit In?

This EPA presentation provides information on the SmartWay Shipper Carrier Tool: its background and development, participation in the program, application process, emission metrics, tool demonstration, data collection, and schedule for 2020.

Webinar: Everything you want to know about the Partner Portal - So much more for you than the tool alone!

This EPA presentation provides information on the SmartWay Shipper Carrier Tool: its background and development, participation in the program, application process, emission metrics, tool demonstration, data collection, and schedule for 2020.

Equipment Manufacturers, Importers, and Exporters: Frequent Questions

As the US continues to phase out HCFCs, equipment manufacturers, importers, and exporters will need to adapt to the changing market demand for equipment. This page provides these groups with information on their responsibilities under the regulations.

EPA, MDEQ to Hold Community Meeting, Provide Update on Agency Response to TCE Contamination in Private Drinking Water Wells

Media Advisory, (EPA) and Mississippi Department of Environmental Quality (MDEQ) will hold a community meeting on Thursday, March 5.

• Release Date: March 3, 2026

TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-19-0027

This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-19-0027.

TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-20-0022

This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-20-0022.

TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-17-0220

This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-17-0220.

TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-17-0191

This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-17-0191.

TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-18-0085

This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-18-0085.

Endangered Species: For Kids

Find links to endangered species information for young people.

Polymeric Substances on the TSCA Inventory

This paper explains the conventions for polymeric chemical substances on the Toxic Substances Control Act (TSCA) Chemical Substance Inventory.

Certain Chemical Substances Containing Varying Carbon Chain Lengths (Alkyl Ranges Using the Cx-y Notation) on the TSCA Inventory

This paper explains the conventions that are applied to certain listings of chemical substances containing ranges of alkyl chain lengths (i.e., carbon chains of varying lengths) for chemical substances on the Toxic Substances Control Act (TSCA)

Products Containing Two or More Substances, Formulated and Statutory Mixtures on the TSCA Inventory

This paper explains the policies that are applied to listings of certain mixtures for the Toxic Substances Control Act (TSCA) Chemical Substance Inventory.

Significant New Use Rules on Certain Chemical Substances

Document page for pre-pub.