Collections and Lists

EPA-Approved Regulations for Maricopa County, AZ

EPA approved Air Regulations and Statutes for Maricopa County, Arizona.

What You Can Do for Voluntary Wetland Restoration and Protection

Resource page for voluntary wetland restoration and protection.

Southern Ute Indian Tribe Operating Permit Program Approval History

Wyoming Operating Permit Program Approval History

Utah Operating Permit Program Approval History

Region 8 Title V Program Evaluations

Title V Operating Permit Public Petition Deadlines

Deadlines for Public Petitions to the Administrator for Permit Objections

Title V Operating Permit: Deseret Generation and Transmission Cooperative, Bonanza Power Plant

Response to Public Comments and Final Operating Permit for the Deseret Generation and Transmission Cooperative Bonanza Power Plant, located within the exterior boundaries of the Uintah and Ouray Indian Reservation in Uintah County, Utah.

Carbon Monoxide (CO) Pollution in Outdoor Air

Information on setting and implementing the outdoor air quality standards for carbon monoxide.

Individual Inert Ingredient Database

New Inerts Database - Temporary while InertsFinder gets fixed

Recognized Third-Party Certifiers under the Formaldehyde Emission Standards for Composite Wood Products Rule

List of EPA-recognized TSCA Title VI TPCs.

Regulations for Emissions from Recreational Vehicles

Information about land-based recreational vehicles, such as snowmobiles, off-highway motorcycles (dirt bikes), all-terrain vehicles (ATVs), and personal boats and watercraft.

Gasoline Standards

Information about EPA's gasoline regulations, including the Tier 3 Gasoline Sulfur program, the Mobile Source Air Toxics rule, Reformulated Gasoline (RFG) regulations, and volatility requirements.

South Dakota NPDES Permits

NPDES water permits issued in South Dakota.

Report a Real Estate Lead Disclosure Rule Concern in EPA's Pacific Southwest

Lead complaints and tips collection form for the public in AZ, CA, HI, NV, U.S. Pacific Islands and 148 Tribes.

Public Notice Distribution List for CAA Permits in the Pacific Southwest (Region 9)

Members of the public who are interested in receiving notices and other information regarding air permits issued by EPA Region 9 (Arizona, California, Hawaii, Nevada, and 148 Tribes) may use this page to join CAA Permits e-mail distribution lists.

Scientific Diving

Homepage for EPA's scientific diving program.

EPA in the Pacific Southwest Videos

Videos highlighting projects, events and environmental issues in or related to the EPA's Pacific Southwest (Region 9).

Thermocyclops crassus Frequently Asked Questions

Great Lakes Monitoring of Thermocyclops crassus

Environmental Crime Victim Resources - New York

A resource listing for environmental crime victims