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Explanations of Ranking Criteria
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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.
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