A facility buys 10,000 pounds of a listed toxic chemical in one year and creates a mixture for a metal cleaning bath. In the following year, the facility begins cleaning metal in the bath. How does the facility determine thresholds for both years?
The threshold applies to the total amount of the toxic chemical otherwise used during the reporting year that the mixture was created. The facility would count the entire 10,000 pounds and any amount added to the bath during that year toward the otherwise use threshold the first year. Only the amount of the toxic chemical added to the bath during the second year would be counted toward the otherwise use threshold determination for the second year. Additional guidance on threshold determinations can be found in the Toxic Release Inventory Reporting Forms and Instructions and the TRI Guidance Documents Web site.