Federal:

• EPA Region 6 (Dallas)
• Pipeline and Hazardous Materials Safety Administration – Southwest Region (Houston)
• Occupational Safety and Health Administration – Texas Offices
• US Army Corps of Engineers
• US Fish and Wildlife
• FEMA

State:

• Texas Commission on Environmental Quality
• Railroad Commission of Texas
• Attorney General of Texas – Environmental Protection Division
• Texas General Land Office
• Texas Department of Licensing and Regulation 
• Texas Department of State Health Services
• Texas Water Development Board
• State Fire Marshal
• Texas Parks and Wildlife Department

Local:

• Harris County Pollution Control Services Department

• City of Houston Bureau of Pollution Control and Prevention

• City of Dallas Office of Environmental Quality & Sustainability

• City of Fort Worth Code Compliance Environmental Quality Division

• City of Austin Environmental Inspection Division

• City of San Antonio Environmental Stewardship Division