Point Source Emissions Inventory

The Point Source Emissions Inventory is an annual survey of chemical plants, refineries, electric utility plants and other industrial sites that meet the reporting criteria in the TCEQ emissions inventory rule (30 TAC §101.10 ).

This Web page provides point source emissions inventory data along with tools and information of use to companies completing their annual Emissions Inventory questionnaires.

Completing and Submitting a Point Source Emissions Inventory

Many of the documents linked from this page are in Portable Document Format (PDF) or in Excel (xls) format, among others. (Help with PDF.)

 Web-based EI Reporting Instructions now available on the TCEQ YouTube Channel

• 2019 Emissions Inventory Guidelines (Revised 12/20/19)
  • Emissions Inventory Checklist (PDF)
  • EAS Contact Information and Other Resources (PDF)
• EI Reporting Requirements Map and Summary Table for Reporting Year (RY) 2019 (PDF) (Updated 12/20/2019)
• Sample RY 2019 Emissions Inventory Notification Letter and Attachments (PDF)
• RY 2019 Electronic Reporting Extract Files (Updated 12/20/2019)
• Status of the 2019 Emissions Inventory (Excel 156k)
• NEW The 2020 Emissions Inventory Workshop will be held on January 30, 2020 in Austin, Texas.
  • 2020 Emissions Inventory Workshop Presentations (PDF)

• Web-based EI Reporting Instructions (PDF) (Updated 12/29/2016)
• Electronic Emissions Inventory File Specifications (PDF)
• Electronic Emissions Inventory File Specifications Appendices (PDF)
• Electronic Emissions Inventory File Specifications Reference Tables (zip) (Updated 01/10/2020)
• Electronic Reporting Error Messages (Excel)

• Frequently Asked Questions (PDF)
• Printing an Emissions Inventory Questionnaire (PDF)
• Emissions Inventory Requirements (§101.10)
• Summary of §101.10 July 2016 Updates (PDF)

• 2014/2015 Houston-Galveston-Brazoria Point Source Emissions Inventory Revisions Due August 1, 2016
  • Notice of deadline (PDF)
  • Detailed information regarding revisions (PDF)

• 2012 Dallas-Fort Worth Point Source Emissions Inventory Revisions Due May 1, 2014
  • Notice of deadline (PDF)
  • Detailed information regarding revisions (PDF)

Important Documents and Information Related to the Point Source Emissions Inventory

• Sample calculation templates for common sources
  • Glycol Dehydration Calculations Template (PDF)
  • Internal Combustion Engine Calculations Template (PDF)
  • Marine Vessel Loading Calculations Template (PDF)
  • Railcar & Truck Loading Calculations Template (PDF)
  • Storage Tanks Calculations Template (PDF)
• Barnett Shale Area Special Inventory (PDF)
• HRVOC Flare Data Request (PDF)
• Sign up for the Point Source Emissions Inventory List Server
• Point Source Air Emissions and Air Inspection Fees
• Inspection Fees (§101.24) Emissions Fees (§101.27)
• TCEQ/University of Texas at Austin Supplemental Flare Operations Training"

Point Source Emissions Inventory Trends

The table that follows gives point source emissions data for the last five completed calendar years, including information on routine industrial emissions in tons per year (tpy) for the sources that met the reporting requirements of Rule 101.10 and submitted an emissions inventory for that year. It lists the following pollutants: volatile organic compounds (VOC), nitrogen oxides (NOx), sulfur dioxide (SO2), carbon monoxide (CO), and particulate matter less than ten microns in diameter (PM10). Note that Inventory Trends are rounded to the nearest thousand.

Point Source Emissions Inventory List Server

To receive point source emissions inventory updates and announcements, please subscribe to the Point Source Emissions Inventory list server. This list server has been specifically created to distribute information for completing a point source emissions inventory. To subscribe, you will need to create a profile with the TCEQ’s distribution service, GovDelivery.com, so that you can add and manage your subscriptions. The Point Source Emissions Inventory list server is located under Air Quality topic. Click here to create a profile or update your current subscriptions

Return to top

Detailed Data from the Point Source Emissions Inventory

Point source emissions inventory data is stored in our State of Texas Air Reporting System (STARS). Only those sites whose emission rates exceed the reporting applicability levels found in( 30 Texas Administrative Code 101.10 ) are tracked. Currently, there are approximately 2,000 industrial sites updating emissions annually.

Site level summary emissions data is available in MS Excel format for inventory years 2014 through 2018: Download the file 2014-2018statesum.xlsx (1093K). The emissions are represented in tons per year during routine operations.

To obtain site specific emissions inventory reports such as: 1) Path List 2) Contaminant Summary Report 3) Emissions Inventory Questionnaire 4) Actual History Report and 5) Air Emission Inventory, follow the instructions listed under the Emissions Inventory Reports.

Customize data extracts are available and may require a fee. To request customize data extracts, complete the Emissions Data Request Form (PDF) and fax it to 512/239-1515.

Return to top

Tools for Completing the Point Source Emissions Inventory Questionnaires

The following information is for the benefit of those companies submitting an annual emissions inventory report under 30 TAC §101.10 .

Help with completing the inventory may also be obtained by calling 512/239-1773 during regular business hours.