Stationary Source Rules for the Austin-Round Rock Area
Rules for stationary sources in the Austin–Round Rock area that are part of the State Implementation Plan strategy to meet the National Ambient Air Quality Standards. The ARR area includes Bastrop, Caldwell, Hays, Travis, and Williamson Counties.
Controlling Ozone Pollution
Rules reduce ozone by limiting emissions of nitrogen oxides (NOx) and volatile organic compounds (VOCs) from the following stationary sources.
Controlling NOx Emissions
Rules limit NOx emissions from the following sources:
- Cement Kilns (rules apply in Hays County)
- Nitric Acid Manufacturing (rules apply statewide)
- Utility Electric Generation in East and Central Texas (rules apply in Bastrop and Travis Counties)
- Water Heaters, Small Boilers, and Process Heaters (rules apply statewide)
Controlling VOC Emissions
Rules limit VOC emissions from the following sources:
- Automotive Windshield Washer Fluid (rules apply statewide)
- Cutback Asphalt
- Degreasing Processes
- Loading and Unloading Operations
- Storage Tanks (rules apply in Travis County)
- Transport Vessels
- Vent Gas (rules apply in Travis County)
- Water Separation (rules apply in Travis County)
Controlling Particulate Matter Pollution
Statewide rules limit particulate matter emissions and opacity from affected stationary sources.
Controlling Sulfur Dioxide Pollution
Statewide rules limit sulfur dioxide emissions and ground-level concentrations from affected stationary sources.
State Implementation Plan
Information on the SIP to improve air quality in the Austin–Round Rock area
Contact Information
- Contact the Stationary Source Programs Team for additional information about stationary source rules.
- Sign up to receive e-mail updates on SIP-related information, including information on stationary source rules. Select SIP Hot Topics under the Air Quality heading.