RMP search output help


This section gives basic totals for the search. RMP contains information on facilities together with the processes they have that could lead to offsite consequences in a worst-case accident, the pounds of chemicals in those processes, and a 5-year accident history. Worst-case accident radii and populations within them are not available except through the RMP reading rooms, so they can not be displayed or totalled by this program.

The top of the totals section shows the number of facilities retrieved by the search, and the number of those that are "deregistered" -- that no longer meet the conditions that require them to report to the RMP database, although their prior reports are archived within the database. The three lines below that show the total number of processes with worst-case scenarios that could reach off-site, and the total pounds of toxic and flammable chemicals in those processes. (A worst-case accident will not necessarily release all of the chemicals held in a process, but no better information is available outside the reading rooms.)

The remaining lines give totals for the 5-year accident histories of facilities in the search. Since the 5-year accident history of each facility extends backwards 5 years from its most recent RMP submission, and since this submissions are not at regularly yearly intervals, there is not a single 5-year period that these totals cover.

Numbers of facilities with chemicals

This top list shows number of facilities retrieved by your search that have particular chemicals among those in their processes onsite. A facility may have more than one chemical. Therefore, there will be multiple counting of facilities in this list -- for example, if a search retrieved a single facility that had processes that used both ammonia and chlorine, both ammonia and chlorine would be listed as having one facility in this list. The list may be useful, however, as a comparative indicator of how often different chemicals show up in relation to each other.

Pounds of chemicals in processes

These top lists show pounds of toxic and flammable chemicals in processes onsite for facilities retrieved by your search. The full amount of chemicals onsite would not necessarily be released in a worst-case accident, so this is not, even for a single facility, an amount of chemical that would be released. However, the amount of chemical released in a worst-case accident is one of the RMP data elements restricted to the reading rooms, so this might be useful as a proxy, or as an indication of relative quantities of chemicals on-site within the search.

Number of Full-Time Employees

This column shows the self-reported number of full-time employees (FTE) at the facility, as a type of indication of facility size.

Number of accidents

This column shows the number of accident records in the facility's latest 5-year accident history, which only includes chemical accidents with off-site consequences.


This column indicates whether the facility has deregistered -- whether it has indicated that it no longer meets the criteria that require reporting to the RMP database. Presumably, this involves some kind of change at the facility, such that its worst case accidents with RMP chemicals would no longer potentially have off-site consequences.

RMP maps and charts help

Number of facilities by state map

This map shows the number of RMP facilities in each state. It does not include facilities that have deregistered themselves from RMP (those that have indicated that they no longer meet RMP reporting requirements). RMP registered facilities are those that have a possible worst-case chemical accident (toxic cloud, fire, or explosion) that could reach off-site.

Accident totals by year bar chart

This bar chart shows the total number of accidents reported to RMP in each year. It is inherently flawed because each facility must report a 5-year accident history, and the 5 years reported by each facility will not necessarily be the same five years reported by any other. Therefore the bar chart is not really tracking a consistently reported set of years. In particular, you'd expect that the early year and late years would not be as well populated due to facilities that only started reporting later, or that hadn't yet reported those years when the database was copied. Still, it may be useful in order to obtain a general sense of the number of off-site RMP accidents in a typical year.