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Toxics Release Inventory (TRI)

TThe Toxics Release Inventory (TRI) is Section 313 of the federal Emergency Planning and Community Right-to-Know Act. This law requires covered facilities and federal installations to submit reports annually to both DEQ and the EPA describing chemical releases and waste management activities for over 600 toxic chemicals. Covered facilities engage in manufacturing, electric power generation, commercial hazardous waste disposal, solvent recovery or serve as bulk petroleum terminals. Facilities in these categories must have the equivalent of at least 10 full time employees and process, manufacture or use at least one listed toxic chemicals at or above the reporting thresholds. The reports are compiled into a database and the information is available to the public. Additionally DEQ prepares an annual statewide data analysis that is available by contacting Kristen Bliss, 405-702-5158, Kristen Bliss.

This page last updated on July 10, 2018


The Oklahoma Department of Environmental Quality participates in EPA's TRI Data Exchange for reports submitted via EPA's Central Data Exchange (CDX). Beginning with 2014 reporting, all facilities must submit using TRI-ME Web and CDX.

Questions regarding the TRI program or TRI data in Oklahoma should be addressed to:

Kristen Bliss
Oklahoma Department of Environmental Quality
Land Protection Division
P.O. Box 1677
Oklahoma City, OK 73101-1677

Based on 2013 TRI reporting, the most current year available, TRI facilities in Oklahoma reported:

    Total Releases TPRW Chemicals Industries


On November 7th, 2013 the o-nitrotoluene was added to the list of chemicals covered for Toxic Release Inventory (TRI) reporting. Facilities that manufacture, process, or otherwise use o-nitrotoluene (CAS # 88-72-2) should begin collecting release, reuse, transfer and/or treatment information for TRI reporting. Additionally, facilities should begin to collect materials accounting information for Pollution Prevention reporting under TRI. This addition begins with reporting for 2014 which is due by July 1, 2015.

On September 30, 2014, EPA announced it is adding a nonylphenol category to the TRI list of reportable chemicals. The Agency's action is part of its ongoing efforts to examine the scope of TRI chemical coverage and provide communities with more complete information on toxic chemical releases. Nonylphenol is mainly used to manufacture nonylphenol ethoxylates which are nonionic surfactants used in a wide variety of products. Because of nonylphenol's toxicity, chemical properties, and widespread use to make other chemicals, concerns have been raised over the potential risks to aquatic organisms from exposure to nonylphenol. The final rule is effective for the 2015 TRI reporting year with the first forms due July 1, 2016.

Links to EPA

EPA Toxics Release Inventory web site

EPA TRI Explorer

EPA TRI Reporting Guidance

TRI-ME Web Reporting Software

Beginning with 2013 reporting due July 1, 2014, EPA no longer will accept paper submissions for TRI. Reporting facilities must prepare reports using the TRI-ME Web on-line software and submit reports via the Central Data Exchange (CDX). CDX login or registration is available at

TRI Summary Reports

2007 | 2006 |2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998


TIER 2 Chemical Inventory Reports | Toxics Release Inventory | OHMERC | Spill Reporting