POLLUTION RANKING|Explanations of Ranking Criteria


Explanations of Ranking Criteria
For a list of the geographic areas, facilities, or industrial sectors which report the largest releases or transfers of this chemical to the Toxics Release Inventory, select the TRI category, geographic area and industrial sector you are interested in. Each TRI category is defined briefly below, with hotlinks to more information if you need it.
Total environmental releases
The sum of chemicals covered by TRI that manufacturing companies release to the environment (air, surface water, underground injection and land).

Air releases
Chemicals covered by TRI that manufacturing companies release to air according to reports to TRI.

Water releases
Chemicals covered by TRI that manufacturing companies release to surface water according to reports to TRI.

Land releases
Chemicals covered by TRI that manufacturing companies release to land according to reports to TRI.

Underground injection
Chemicals covered by TRI that manufacturing companies inject underground according to reports to TRI.

Total off-site transfers
Chemicals covered by TRI that manufacturing companies transfer off-site to other facilities for disposal, recycling, combustion for energy recovery, or treatment.

Total production-related waste
The sum of all chemical waste generated at a facility, prior to any form of on-site or off-site waste management.