New TCEQ Environmental Regulations on VOCs and Thermal Oxidizers: What You Need to Know
The Texas Commission on Environmental Quality (TCEQ) has rolled out new regulations affecting volatile organic compounds (VOCs) and thermal oxidizers. These updates are designed to improve air quality standards statewide and ensure industrial facilities operate responsibly.
🔥 VOC Control and Thermal Oxidizer Requirements
TCEQ now requires thermal oxidizers used for VOC control to achieve at least 95% destruction efficiency. Key points include:
- Continuous Monitoring: Systems must record combustion chamber temperatures.
- Performance Standards: Temperatures must meet a 3-hour average based on initial performance testing.
- Calibration: Monitoring equipment must be calibrated annually and maintain accuracy within ±5°F.
For catalytic oxidizers, both inlet and outlet catalyst bed temperatures must be continuously monitored to ensure consistent operation.
📊 Emissions Inventory & Reporting Updates
Facilities are now required to use updated emissions inventory (EI) forms for:
- Internal combustion engines
- Glycol dehydration units
- Storage tanks
TCEQ has also launched the Air Emissions and Inspection Fee (AEIF) program, which is now handled via the STEERS online system. This digital tool helps streamline submissions and improve compliance.
🛠️ Permitting and Compliance Requirements
Thermal oxidizers must meet enhanced performance standards:
- Firebox exit temperature: Minimum 1,400°F
- Residence time: At least 0.5 seconds
Additionally, systems must comply with §106.493(2) and (3) of the Texas Administrative Code, specific to direct flame incinerators. Meeting these criteria is essential for permitting.
🚫 Monitoring Exemptions
TCEQ has clarified exemptions for vents that:
- Emit colorless VOCs
- Release non-fuming liquids
- Are incapable of producing visible emissions
These sources may not require continuous monitoring if deemed low risk for environmental impact.
✅ Final Thoughts
Staying compliant with TCEQ’s updated environmental regulations is crucial—not just for avoiding fines, but for demonstrating your facility’s commitment to air quality and responsible operations.
