Stationary Source Rules for the Austin-Round Rock Area
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
- 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:
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