Once a geographic region has been chosen, map headers will include a link to a "Regional TRI Summary" in the regional description. These summaries show cumulative on-site TRI release data over a period of years.

If your map shows TRI facilities, then the Regional TRI Summary will provide a regional on-site chemical releases table that lists the names and release amounts of chemicals released on-site by facilities in the region (with the greatest total on-site releases listed first).

For a TRI Releases map, the Regional TRI Summary will list on-site release totals of the selected chemical broken down by release medium.

Note that these are cumulative summary data and do not reflect specific search settings such as facility name and release amount threshold.