Federal Government:

Enviro$en$e - Common Sense Solutions to Environmental Problems
THOMAS: Legislative Information on the Internet

CFR & Federal Register

• Code of Federal Regulations
• The FEDERAL REGISTER(FR) - Daily Table of Contents

Environmental Protection Agency

• Hazardous Air Pollutants (HAPs)
• MACT Standards (Rule History and Guidance Documents)
• Environmental Protection Agency
• EPA People Locator
• EPA Sector Notebooks
• Office of Enforcement and Compliance Assurance
• TTN 2000 Home Page (html/index)
• EPA FTP Site

Office of Air and Radiation

• Office of Air and Radiation (OAR)
• OAR Regulations
• Acid Rain Division
• Office of Air Quality Planning and Standards (OAQPS)

Air Toxics

• Air Toxics

Chemical Emergency Preparedness & Prevention Office (CEPPO)

• Chemical Emergency Preparedness and Prevention Office (CEPPO)
• Hazardous Chemical Information
• State Designated TRI Contacts
• Chemical Accident Prevention and Risk Management Planning

EPA Regions

• Map of U.S. Regions
• Region 9 Air Programs
• Region 9 State and Local Air Program Contacts
• Centers for Disease Control and Prevention (CDC)
• National Institute for Occupational Safety and Health (NIOSH)
• Federal Energy Regulatory Commission (FERC)
• US Department of Energy (DOE)
• US Department of Labor - OSHA

State Government:

California

• Air Pollution Control Districts

Colorado

• Air Pollution Control Division Home Page
• Colo. Dept. of Public Health & Env. (CDPHE)

Kansas

• State of Kansas (INK)

Louisiana

• Department of Environmental Quality (DEQ)
• DEQ - Radiation in Perspective

Missouri

• State Government
• Air Pollution Control Program
• Department of Natural Resources
• Division of Environmental Quality

New Mexico

• Government Information (General)
• Corporation Commission

Oklahoma

• Corporation Commission
• Department of Environmental Quality (DEQ)

Texas

• Statewide Listing of Agencies, Commissions, and Universities
• State of Texas Services via World Wide Web
• Secretary of State
• Texas Administrative Code - List of Titles
• Texas Register 
• Department of Health
• Department of Transportation - (TxDOT)
• General Land Office (GLO)
• Texas Commission on Environmental Quality (TCEQ), Formerly TNRCC
• Link to Frequently Asked Questions page on the OPD web site
• Parks and Wildlife Department
• State Electronic Library

Other:

• Air and Waste Management Association
• American Institute of Chemical Engineers
• American Chemical Society
• American Society for Testing and Materials
• American Society of Civil Engineers
• Chemical Abstract Service Online (CAS)
• ChemFinder WebServer
• Environmental Professional's Homepage - Main Page
• Hazardous Chemical Database
• Internet Resources for the Environmental Scientist
• Material Safety Data Sheets
• The Oil and Gas Information Network
• Synthetic Organic Chemical Manufacturers Association
• U.S. Business Advisor