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The proposed rule for the first time would lead to more reporting of environmental releases of several persistent, bioaccumulative toxic chemicals (PBTs), including dioxin and mercury. Persistent, bioaccumulative chemicals are those that do not break down quickly and remain in the environment for long periods. They bioaccumulate, or build up, in the food chain. The proposed rule would provide the public with important information on releases of a number of PBTs including dioxins, mercury, PCBs, aldrin, heptachlor and others that are known to cause a variety of health hazards at low doses. Under the current rules, facilities are not required to report their PBT releases to the air, water, and land unless they manufacture or process more than 25,000 pounds annually or use more than 10,000 pounds annually of the chemical. These high thresholds severely limit the reporting of PBTs. Under the new proposal, thresholds would be lowered to 100 pounds or 10 pounds, depending on the extent to which the chemical persists and bioaccumulates. The proposed rule was published in the Federal Register on January 5, 1999 and is available on the EPA website at http://www.epa.gov/fedrgstr. General
information on the Toxics Release Inventory is available at http://www.epa.gov/opptintr/tri. |
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