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Toxics Release Inventory (TRI) Program

Persistent Bioaccumulative Toxic (PBT) Chemicals Covered by the TRI Program

There are 16 PBT chemicals and 5 PBT chemical compound categories that are subject to Toxics Release Inventory (TRI) reporting under Section 313 of the Emergency Planning and Community Right-to-Know Act (EPCRA). The tables below list the name, identification number and reporting threshold for each.

Chemical Categories
Category Name TRI Category # Reporting Threshold
(in pounds unless noted otherwise)
Dioxin and Dioxin-Like Compounds
(manufacturing and the processing or otherwise use of dioxin and dioxin-like compounds if the dioxin and dioxin-like compounds are present as contaminants in a chemical and if they were created during the manufacturing of that chemical)
N150 0.1 grams
Hexabromocyclododecane (HBCD) N270 100
Lead Compounds N420 100
Mercury Compounds N458 10
Polycyclic Aromatic Compounds (PACs) N590 100
Chemical Name CAS Number Reporting Threshold
(in pounds)
Aldrin 309-00-2 100
Benzo(g,h,i)perylene 191-24-2 10
Chlordane 57-74-9 10
Heptachlor 76-44-8 10
Hexachlorobenzene 118-74-1 10
Isodrin 465-73-6 10
Lead 7439-92-1 100
Mercury 7439-97-6 10
Methoxychlor 72-43-5 100
Octachlorostyrene 29082-74-4 10
Pendimethalin 40487-42-1 100
Pentachlorobenzene 608-93-5 10
Polychlorinated biphenyl (PCBs) 1336-36-3 10
Tetrabromobisphenol A 79-94-7 100
Toxaphene 8001-35-2 10
Trifluralin 1582-09-8 100