You are here: Home Small Business and Local Government Assistance Air Air Emissions Calculation Tips

Air Emissions Calculation Tips

Tools to help small businesses and local governments in calculating their air emissions.

All Texas businesses or local government operations that emit air pollutants must have state authorization to do so. The following information is designed to assist a small business owner or local government official determine if their air emissions can be authorized by an exemption called Permit by Rule. The links are in Adobe Acrobat's portable document format (PDF). Click here for assistance with PDF.

Important Note: Should any of the active links in the following PDF files be found to not work, please let us know by sending e-mail to sbap@tceq.texas.gov.

Overview (PDF)

Almost all businesses or operations emit some sort of air pollution. This overview explains what an air pollutant is and helps to determine how to make an estimate of air emissions

Example Emissions Estimate: Products of Combustion (PDF)

Many operations also emit air pollution when fuel is burned. This document explains how to estimate emissions from products of combustion.

Example Emissions Estimate: Particulate Matter (PDF)

Many operations also emit air pollution called particulate matter which can be solid or liquid in the form of dust, smoke or vapor. Although the techniques necessary to estimate particulate matter emissions are complicated, this document is a good starting point

Example Emissions Estimate: Volatiles (PDF)

Many operations emit air pollution called volatile organic compounds (VOC) or hazardous air pollutants (HAP). This document explains how to estimate VOCs and HAPs.

to top of page

Document Actions
Hot Topics

Important information


EPA's New Rules for Oil and Gas Exit the TCEQ
EPA Issues Final Air Rules for the Oil and Gas Industry

Important information


Drought Emergency Planning Workshops
Workshops to provide information and tools to prevent and mitigate water outages.


PWS Drought Reporting Form
Public water systems should use this form to report the current stage of their drought contingency plan.

Important information