---
kind: "section"
citation: "15 U.S.C. § 8921"
title: "15"
title_heading: "Commerce and Trade"
number: "8921"
heading: "Additions to toxics release inventory"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/15/8921"
units:
  - "Chapter 115 — Perfluoroalkyl and Polyfluoroalkyl Substances and Emerging Contaminants"
  - "Subchapter II — Pfas Release Disclosure"
---

# §8921. Additions to toxics release inventory

- (a) **Definition of toxics release inventory—** In this section, the term “toxics release inventory” means the list of toxic chemicals subject to the requirements of [section 11023(c) of title 42](/usc/42/11023.md?p=c).
- (b) **Immediate inclusion—**
  - (1) **In general—** Subject to [subsection (e)](#e), beginning January 1 of the calendar year following December 20, 2019, the following chemicals shall be deemed to be included in the toxics release inventory:
    - (A) Perfluorooctanoic acid (commonly referred to as “PFOA”) (Chemical Abstracts Service No. 335–67–1).
    - (B) The salts associated with the chemical described in [subparagraph (A)](#b-1-A) (Chemical Abstracts Service Nos. 3825–26–1, 335–95–5, and 68141–02–6).
    - (C) Perfluorooctane sulfonic acid (commonly referred to as “PFOS”) (Chemical Abstracts Service No. 1763–23–1).
    - (D) The salts associated with the chemical described in [subparagraph (C)](#b-1-C) (Chemical Abstracts Service Nos. 2795–39–3, 29457–72–5, 56773–42–3, 29081–56–9, and 70225–14–8).
    - (E) A perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances that is—
      - (i) listed as an active chemical substance in the February 2019 update to the inventory under [section 2607(b)(1) of this title](/usc/15/2607.md?p=b-1); and
      - (ii) on December 20, 2019, subject to the provisions of—
        - (I) section 721.9582 of title 40, Code of Federal Regulations; or
        - (II) section 721.10536 of title 40, Code of Federal Regulations.
    - (F) Hexafluoropropylene oxide dimer acid (commonly referred to as “GenX”) (Chemical Abstracts Service No. 13252–13–6).
    - (G) The compound associated with the chemical described in [subparagraph (F)](#b-1-F) identified by Chemical Abstracts Service No. 62037–80–3.
    - (H) Perfluorononanoic acid (commonly referred to as “PFNA”) (Chemical Abstracts Service No. 375–95–1).
    - (I) Perfluorohexanesulfonic acid (commonly referred to as “PFHxS”) (Chemical Abstracts Service No. 355–46–4).
  - (2) **Threshold for reporting—**
    - (A) **In general—** Subject to [subparagraph (B)](#b-2-B), the threshold for reporting the chemicals described in [paragraph (1)](#b-1) under [section 11023 of title 42](/usc/42/11023.md) is 100 pounds.
    - (B) **Revisions—** Not later than 5 years after December 20, 2019, the [Administrator](/usc/15/636e.md?p=1) shall—
      - (i) determine whether revision of the threshold under [subparagraph (A)](#b-2-A) is warranted for any chemical described in [paragraph (1)](#b-1); and
      - (ii) if the [Administrator](/usc/15/636e.md?p=1) determines a revision to be warranted under [clause (i)](#b-2-B-i), initiate a revision under [section 11023(f)(2) of title 42](/usc/42/11023.md?p=f-2).
- (c) **Inclusion following assessment—**
  - (1) **In general—**
    - (A) **Date of inclusion—** Subject to [subsection (e)](#e), notwithstanding [section 11023 of title 42](/usc/42/11023.md), a perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances not described in [subsection (b)(1)](#b-1) shall be deemed to be included in the toxics release inventory beginning January 1 of the calendar year after any of the following dates:
      - (i) **Final toxicity value—** The date on which the [Administrator](/usc/15/636e.md?p=1) finalizes a toxicity value for the perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances.
      - (ii) **Significant new use rule—** The date on which the [Administrator](/usc/15/636e.md?p=1) makes a covered determination for the perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances.
      - (iii) **Addition to existing significant new use rule—** The date on which the perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances is added to a list of substances covered by a covered determination.
      - (iv) **Addition as active chemical substance—** The date on which the perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances to which a covered determination applies is—
        - (I) added to the list published under paragraph (1) of [section 2607(b) of this title](/usc/15/2607.md?p=b) and designated as an active chemical substance under [paragraph (5)(A)](/usc/15/2607.md?p=b-5-A) of such section; or
        - (II) designated as an active chemical substance on such list under paragraph (5)(B) of such section.
    - (B) **Covered determination—** For purposes of this paragraph, a covered determination is a determination made, by rule, under [section 2604(a)(2) of this title](/usc/15/2604.md?p=a-2) that a use of a perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances is a significant new use (except such a determination made in connection with a determination described in [section 2604(a)(3)(B)](/usc/15/2604.md?p=a-3-B) or [section 2604(a)(3)(C) of this title](/usc/15/2604.md?p=a-3-C)).
  - (2) **Threshold for reporting—**
    - (A) **In general—** Subject to [subparagraph (B)](#c-2-B), notwithstanding subsection (f)(1) of [section 11023 of title 42](/usc/42/11023.md), the threshold for reporting under such [section 11023 of title 42](/usc/42/11023.md) the substances and classes of substances included in the toxics release inventory under [paragraph (1)](#c-1) is 100 pounds.
    - (B) **Revisions—** Not later than 5 years after the date on which a perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances is included in the toxics release inventory under [paragraph (1)](#c-1), the [Administrator](/usc/15/636e.md?p=1) shall—
      - (i) determine whether revision of the threshold under [subparagraph (A)](#c-2-A) is warranted for the substance or class of substances; and
      - (ii) if the [Administrator](/usc/15/636e.md?p=1) determines a revision to be warranted under [clause (i)](#c-2-B-i), initiate a revision under [section 11023(f)(2) of title 42](/usc/42/11023.md?p=f-2).
- (d) **Inclusion following determination—**
  - (1) **In general—** Not later than 2 years after December 20, 2019, the [Administrator](/usc/15/636e.md?p=1) shall determine whether the substances and classes of substances described in [paragraph (2)](#d-2) meet any one of the criteria described in [section 11023(d)(2) of title 42](/usc/42/11023.md?p=d-2) for inclusion in the toxics release inventory.
  - (2) **Substances described—** The substances and classes of substances referred to in [paragraph (1)](#d-1) are perfluoroalkyl and polyfluoroalkyl substances and classes of perfluoroalkyl and polyfluoroalkyl substances not described in [subsection (b)(1)](#b-1), including—
    - (A) perfluoro[(2-pentafluoroethoxy-ethoxy)acetic acid] ammonium salt (Chemical Abstracts Service No. 908020–52–0);
    - (B) 2,3,3,3-tetrafluoro 2–(1,1,2,3,3,3-hexafluoro)–2–(trifluoromethoxy) propanoyl fluoride (Chemical Abstracts Service No. 2479–75–6);
    - (C) 2,3,3,3-tetrafluoro 2–(1,1,2,3,3,3-hexafluoro)–2–(trifluoromethoxy) propionic acid (Chemical Abstracts Service No. 2479–73–4);
    - (D) 3H-perfluoro-3-[(3-methoxy-propoxy) propanoic acid] (Chemical Abstracts Service No. 919005–14–4);
    - (E) the salts associated with the chemical described in [subparagraph (D)](#d-2-D) (Chemical Abstracts Service Nos. 958445–44–8, 1087271–46–2, and NOCAS 892452);
    - (F) 1-octanesulfonic acid 3,3,4,4,5,5,6,6,7,7,8,8-tridecafluoro-potassium salt (Chemical Abstracts Service No. 59587–38–1);
    - (G) perfluorobutanesulfonic acid (Chemical Abstracts Service No. 375–73–5);
    - (H) 1–Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-potassium salt (Chemical Abstracts Service No. 29420–49–3);
    - (I) the component associated with the chemical described in [subparagraph (H)](#d-2-H) (Chemical Abstracts Service No. 45187–15–3);
    - (J) heptafluorobutyric acid (Chemical Abstracts Service No. 375–22–4);
    - (K) perfluorohexanoic acid (Chemical Abstracts Service No. 307–24–4);
    - (L) the compound associated with the chemical described in [subsection (b)(1)(F)](#b-1-F) identified by Chemical Abstracts Service No. 2062–98–8;
    - (M) perfluoroheptanoic acid (commonly referred to as “PFHpA”) (Chemical Abstracts Service No. 375–85–9);
    - (N) each perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances for which a method to measure levels in drinking water has been validated by the [Administrator](/usc/15/636e.md?p=1); and
    - (O) a perfluoroalkyl and polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances other than the chemicals described in subparagraphs [(A)](#d-2-A) through [(N)](#d-2-N) that is used to manufacture fluorinated polymers, as determined by the [Administrator](/usc/15/636e.md?p=1).
  - (3) **Addition to toxics release inventory—** Subject to [subsection (e)](#e), if the [Administrator](/usc/15/636e.md?p=1) determines under [paragraph (1)](#d-1) that a substance or a class of substances described in [paragraph (2)](#d-2) meets any one of the criteria described in [section 11023(d)(2) of title 42](/usc/42/11023.md?p=d-2), the [Administrator](/usc/15/636e.md?p=1) shall revise the toxics release inventory in accordance with such [section 11023(d) of title 42](/usc/42/11023.md?p=d) to include that substance or class of substances not later than 2 years after the date on which the [Administrator](/usc/15/636e.md?p=1) makes the determination.
- (e) **Confidential business information—**
  - (1) **In general—** Prior to including on the toxics release inventory pursuant to subsection [(b)(1)](#b-1), [(c)(1)](#c-1), or [(d)(3)](#d-3) any perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances the chemical identity of which is subject to a claim of a [person](/usc/15/7a.md?p=6) of protection from disclosure under subsection (a) of [section 552 of title 5](/usc/5/552.md), pursuant to [subsection (b)(4)](/usc/5/552.md?p=b-4) of that section, the [Administrator](/usc/15/636e.md?p=1) shall—
    - (A) review any such claim of protection from disclosure; and
    - (B) require that [person](/usc/15/7a.md?p=6) to reassert and substantiate or resubstantiate that claim in accordance with [section 2613(f) of this title](/usc/15/2613.md?p=f).
  - (2) **Nondisclosure of protection information—** If the [Administrator](/usc/15/636e.md?p=1) determines that the chemical identity of a perfluoroalkyl or polyfluoroalkyl substance or class of perfluoroalkyl or polyfluoroalkyl substances qualifies for protection from disclosure pursuant to [paragraph (1)](#e-1), the [Administrator](/usc/15/636e.md?p=1) shall include the substance or class of substances, as applicable, on the toxics release inventory in a manner that does not disclose the protected information.

## Source credit

(Pub. L. 116–92, div. F, title LXXIII, § 7321, Dec. 20, 2019, 133 Stat. 2277.)

## Notes

### Editorial Notes

### Codification

Section is comprised of section 7321 of Pub. L. 116–92. Subsec. (f) of section 7321 of Pub. L. 116–92 amended section 11023 of Title 42, The Public Health and Welfare.