Is the date on which the chemical was regulated. The law is based on the premise that citizens have a right to know about potentially harmful chemicals in their communities. This database contains data on annual estimated releases of over 300 toxic chemicals to air, water, and land by the manufacturing industry. The TRI data for chemical releases to land are limited to releases within the boundary of a facility. Surface water releases included discharges to rivers, lakes, streams, and other bodies of water.
Scale is an important factor in data usage.
Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analyses. Every effort has been made to supply the user with data documentation.