Dallas County offices will be closed November 23rd and 24th in observance of the Thanksgiving holiday.

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Tier2 Reporting in Texas

2121 Panoramic Circle, Suite 240, Dallas, TX 75212
Telephone: (214) 653-7980 • Fax: (214) 653-7988

The Texas Tier Two Report is an annual hazardous chemical inventory which provides detailed information on chemicals which meet or exceed specified reporting thresholds at any time during a calendar year. There are two types of thresholds that determine whether a hazardous chemical will be included on the Texas Tier Two Report: There are very low thresholds for any of the listed Extremely Hazardous Substances (500 pounds or the Threshold Planning Quantity in pounds for the specific listed chemical, whichever amount is less). For all other "generally hazardous chemicals" [products which require a Material Safety Data Sheet (MSDS) under the federal Occupational Safety and Health Administration's (OSHA's) Hazard Communication Standard, the threshold for reporting is 10,000 pounds.

The Texas Tier Two Report includes facility tracking information, as well as information on the hazardous chemicals being reported, including common and chemical names of products, hazard classifications, reporting ranges, days on site, container types, and storage locations. Under a new state rule, effective August 1, 2006, Tier Two Reports must be submitted to DSHS in electronic format, using the Tier2 Submit software program to prepare the electronic file. The Dallas County LEPC has tagged on to this requirement and now accepts only the electronic format using the Tier2 Submit software program, as well.

Tier2 Links

Tier 2 Chemical Reporting Program
This is the official website for the Texas Tier2 Chemical Reporting Program. On this site you will find helpful documents, publications, FAQs, etc. regarding chemical reporting requirements in Texas.

The CAMEO system integrates a chemical database and a method to manage the data, an air dispersion model, and a mapping capability. All modules work interactively to share and display critical information in a timely fashion. The CAMEO system is available in Macintosh and Windows formats.

ALOHA is an atmospheric dispersion model used for evaluating releases of hazardous chemical vapors. ALOHA allows the user to estimate the downwind dispersion of a chemical cloud based on the toxicological/physical characteristics of the released chemical, atmospheric conditions, and specific circumstances of the release. Graphical outputs include a "cloud footprint" that can be plotted on maps with MARPLOT to display the location of other facilities storing hazardous materials and vulnerable locations, such as hospitals and schools. Specific information about these locations can be extracted from CAMEO information modules to help make decisions about the degree of hazard posed.

MARPLOT (Mapping Application for Response, Planning, and Local Operational Tasks) is a general-purpose mapping application program with the following features: easy-to-use GIS interface; ability to add objects to mark map and mark them using symbols or an inserted picture; allows you to customize the maps by specifying which layers appear and whether objects in those layers (such as roads) are labeled; and much more.

Landview 6
Landview 6 is a geographic information and data viewer. It contains both database management software and mapping software. Landview provides the geographic data while MARPLOT allows you to view the information.

For additional information you may contact the Dallas County LEPC Coordinator.