TCEQ 106.512 (a.k.a. 30 TAC 106.512)

You may have been informed that your engines or turbines must adhere to a rule called TCEQ 106.512. This rule is better known under its proper name of 30 TAC 106.512, since it is included under Title 30 of the Texas Administrative Code. (The term TECQ simply refers to the Texas Commission on Environmental Quality, which administers the Code.) The rule covers emissions of two types of devices: gas or liquid-fueled stationary internal combustion engines, and gas turbines.

Engines and turbines must meet different sets of requirements according to their rated power. If your engines or turbines generate less than 240 hp, your facility does not have to register with the Office of Permitting, Remediation, and Registration. But it still has to comply with the rule’s regulations regarding gas or liquid fuel composition. Additionally, it must show compliance with the National Ambient Air Quality Standard (NAAQS) through ambient sampling or dispersion modeling of the facility’s nitrogen oxide levels. If the power level ranges between 240 hp and 500 hp, you must register your facility within the first 10 days of its construction.

Engines and turbines rated at 500 hp or greater must follow all of these requirements while also adhering to strict nitrogen oxide maximums. Gas-fired rich-burning engines are limited to 2 grams of nitrogen oxide per horsepower-hour, for instance; lean-burning engines may be permitted limits up to 5 grams per horsepower-hour, but only when run at a reduced speed. Compression-ignited liquid-fueled engines are limited to 11 grams of nitrogen oxides per horsepower-hour.

Gas turbines must meet yet another set of standards. Turbines rated 500 hp or higher must comply with the requirements of EPA New Source Performance Standards Subpart GG while also limiting their nitrogen oxide emissions to 3 grams per horsepower-hour. Less powerful turbines need not conform to these rules – but they must still follow detailed requirements regarding fuel composition.

Erthwrks can help your facility meet the requirements of 30 TAC 106.512. Contact us to schedule a consultation and assessment.

Stationary Engine Testing

  • 40 CFR Part 60 Subpart JJJJ – NOx, CO, and VOC testing
  • Pre and Post Catalyst testing for pollutant reduction usually via 40 CFR Part 63 Subpart ZZZZ – Formaldehyde (HCOH) and CO reduction efficiency
  • Permit by Rule/Source Performance Guarantees
    • Every state and sometimes every source has specific guidelines
    • Examples of this are:
    • 40 CFR Part 60 Subparts KKKK – Turbine Compliance Testing
    • 40 CFR Part 60 Subparts GG – Turbine Compliance Testing

Erthwrks pipeline testing team uses a variety of testing methods to provide results in the ways that best serve our clients: Volatile Organic Compounds (VOCs) and Total Hydrocarbons (TOC) results via:

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