Current Incidents:


Responder Software


The following software is available to responders for use on incidents.

Computer Aided Modeling of Emergency Operations (CAMEO)

CAMEO ® is a system of software applications used widely to plan for and respond to chemical emergencies. It is one of the tools developed by EPA’s Chemical Emergency Preparedness and Prevention Office (CEPPO) and the National Oceanic and Atmospheric Administration Office of Response and Restoration (NOAA), to assist front-line chemical emergency planners and responders. They can use CAMEO to access, store, and evaluate information critical for developing emergency plans. In addition, CAMEO supports regulatory compliance by helping users meet the chemical inventory reporting requirements of the Emergency Planning and Community Right-to-Know Act (EPCRA, also known as SARA Title III). CAMEO also can be used with a separate software application called LandView ® to display EPA environmental databases and demographic/economic information to support analysis of environmental justice issues.

Download the current version of CAMEOfm at

Aerial Locations of Hazardous Atmosphere (ALOHA)

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.

Download the current version of ALOHA at

Mapping Applications for Response, Planning, and Local Operational Tasks (MARPLOT)

MARPLOT is the mapping application. It allows users to "see" their data (e.g., roads, facilities, schools, response assets), display this information on computer maps, and print the information on area maps. The areas contaminated by potential or actual chemical release scenarios also can be overlaid on the maps to determine potential impacts. The maps are created from the U.S. Bureau of Census TIGER/Line files and can be manipulated quickly to show possible hazard areas.

Download the current version of MARPLOT at

MARPLOT Maps are available at


Emergency Response Guidebook 2004 Software

The 2004 Emergency Response Guidebook, same little orange book in the vehicles, is available as a standalone computer program.  The program is developed for free distribution by Canada.  The software provides all the information as the book in a browsable, or searchable program.

Download the 2004 ERG Software here:

If the software states that Microsoft .NET 1.1 Framework must be installed first, download the following patch:

Operation Respond Emergency Information System (OREIS)

The Operation Respond® Emergency Information System (OREIS™) is a software tool for first responders to safety and security incidents occurring along North American railroads and highways. The program provides responders with a wealth of information that is useful in a variety of situations, including hazardous materials response/clean-up, passenger railroad rescue/ response and counter-terrorism operations.

The primary feature of OREIS™ is the ability to provide on-scene responders with the exact hazardous materials and chemical contents of railcars and motor carriers that have been involved in an incident. Users connect to the Operation Respond server through the Internet, which connects to the carrier database to provide responders with real-time chemical information in seconds. Every Class One freight railroad carrier in the United States and Canada participates in OREIS™, as do a growing number of short line railroads and motor carriers.

OREIS™ also contains stand-alone features. The software identifies hazmat based on placards, UN numbers, and tank truck silhouettes aboard motor and rail carriers. OREIS™ also contains several chemical databases, like those maintained by the Association of American Railroads and the U.S. Coast Guard, to be used as a backup or second-source chemical information reference. The new version of OREIS™ also contains the NIOSH Target Organs Guide.

In addition, OREIS™ provides responders with accurate and detailed equipment diagrams and schematics for many passenger railroads, commuter railroads, and transit systems throughout North America. These schematics include important emergency information about emergency exits, fuel sources, electrical sources, hot spots and other details a responder needs at the start of a rescue/response operation.

Order OREIS from the following location:


Descriptions courtesy of the Environmental Protection Agency at

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