Federal Register / Vol. 87, No. 125 / Thursday, June 30, 2022 / Notices 39091 

III. Revision of the December 2020 Risk 

Evaluation 

A. Why is EPA proposing to revise the 

risk determination for the PCE risk 

evaluation? 

EPA is proposing to revise the risk 

determination for the PCE risk 

evaluation pursuant to TSCA section 

6(b) and consistent with Executive 

Order 13990, (‘‘Protecting Public Health 

and the Environment and Restoring 

Science to Tackle the Climate Crisis’’) 

and other Administration priorities 

(Refs. 3, 4, and 6). EPA is revising 

specific aspects of the first ten TSCA 

existing chemical risk evaluations in 

order to ensure that the risk evaluations 

better align with TSCA’s objective of 

protecting health and the environment. 

For the PCE risk evaluation, this 

includes the draft revision: (1) Making 

the risk determination in this instance 

based on the whole chemical substance 

instead of by individual conditions of 

use, and (2) Emphasizing that EPA does 

not rely on the assumed use of PPE 

when making the risk determination. 

B. What are the draft revisions? 

EPA is releasing a draft revision of the 

risk determination for the PCE risk 

evaluation pursuant to TSCA section 

6(b). Under the revised determination, 

EPA preliminarily concludes that PCE, 

as evaluated in the risk evaluation as a 

whole, presents an unreasonable risk of 

injury to health under its conditions of 

use. This revision would replace the 

previous unreasonable risk 

determinations made for PCE by 

individual conditions of use, supersede 

the determinations (and withdraw the 

associated order) of no unreasonable 

risk for the conditions of use identified 

in the TSCA section 6(i)(1) no 

unreasonable risk order, and clarify the 

lack of reliance on assumed use of PPE 

as part of the risk determination. 

These draft revisions do not alter any 

of the underlying technical or scientific 

information that informs the risk 

characterization, and as such the 

hazard, exposure, and risk 

characterization sections are not 

changed except to the extent that 

statements about PPE assumptions in 

section 2.4.1.4 (Consideration of 

Engineering Controls and PPE) and 

section 4.2.2.2 (Occupational Inhalation 

Exposure Summary and PPE Use 

Determinations by OES) of the PCE risk 

evaluation would be superseded. The 

discussion of the issues in this notice 

and in the accompanying draft revision 

to the risk determination would 

supersede any conflicting statements in 

the prior executive summary, section 

2.4.1.4 and section 4.2.2.2 from the PCE 

risk evaluation and the response to 

comments document (Refs. 2 and 10). 

Additional policy changes to other 

chemical risk evaluations, including any 

consideration of potentially exposed or 

susceptible subpopulations and/or 

inclusion of additional exposure 

pathways, are not necessarily reflected 

in these draft revisions to the risk 

determination. 

C. Will the draft revised risk 

determination be peer reviewed? 

The risk determination (section 5 in 

the December 2020 risk evaluation) was 

not part of the scope of the peer review 

of the PCE risk evaluation by the 

Science Advisory Committee on 

Chemicals (SACC). Thus, consistent 

with that approach, EPA does not 

intend to conduct peer review of the 

draft revised unreasonable risk 

determination for the PCE risk 

evaluation because no technical or 

scientific changes will be made to the 

hazard or exposure assessments or the 

risk characterization. 

D. What are the next steps for finalizing 

revisions to the risk determination? 

EPA will review and consider public 

comment received on the draft revised 

risk determination for the PCE risk 

evaluation and, after considering those 

public comments, issue the revised final 

PCE risk determination. If finalized as 

drafted, EPA would also issue a new 

order to withdraw the TSCA section 

6(i)(1) no unreasonable risk order issued 

in Section 5.4.1 of the 2020 PCE risk 

evaluation. This final revised risk 

determination would supersede the 

December 2020 risk determinations of 

no unreasonable risk. Consistent with 

the statutory requirements of TSCA 

section 6(a), the Agency would then 

propose risk management actions to 

address the unreasonable risk 

determined in the PCE risk evaluation. 

IV. References 

The following is a listing of the 

documents that are specifically 

referenced in this document. The docket 

includes these documents and other 

information considered by EPA, 

including documents that are referenced 

within the documents that are included 

in the docket, even if the referenced 

document is not physically located in 

the docket. For assistance in locating 

these other documents, please consult 

the person listed under FOR FURTHER

INFORMATION CONTACT. 

1. EPA Draft Revised Unreasonable Risk 

Determination for Perchloroethylene, 

Section 5, June 2022. 

2. EPA. Risk Evaluation for 

Perchloroethylene. EPA Document #740– 

R1–8011. December 2020. https://

www.regulations.gov/document/EPA-HQOPPT-2019-0502-0058. 

3. Executive Order 13990. Protecting Public 

Health and the Environment and Restoring 

Science to Tackle the Climate Crisis. 

Federal Register. 86 FR 7037, January 25, 

2021. 

4. Executive Order 13985. Advancing Racial 

Equity and Support for Underserved 

Communities Through the Federal 

Government. Federal Register. 86 FR 7009, 

January 25, 2021. 

5. Executive Order 14008. Tackling the 

Climate Crisis at Home and Abroad. 

Federal Register. 86 FR 7619, February 1, 

2021. 

6. Presidential Memorandum. Memorandum 

on Restoring Trust in Government Through 

Scientific Integrity and Evidence-Based 

Policymaking. Federal Register. 86 FR 

8845, February 10, 2021. 

7. EPA Press Release. EPA Announces Path 

Forward for TSCA Chemical Risk 

Evaluations. June 2021. https://

www.epa.gov/newsreleases/epaannounces-path-forward-tsca-chemicalrisk-evaluations. 

8. EPA. Proposed Rule; Procedures for 

Chemical Risk Evaluation Under the 

Amended Toxic Substances Control Act. 

Federal Register. 82 FR 7562, January 19, 

2017 (FRL–9957–75). 

9. EPA. Final Rule; Procedures for Chemical 

Risk Evaluation Under the Amended Toxic 

Substances Control Act. Federal Register. 

82 FR 33726, July 20, 2017 (FRL–9964–38). 

10. EPA. Summary of External Peer Review 

and Public Comments and Disposition for 

Perchloroethylene (PCE). December 2020. 

https://www.regulations.gov/document/ 

EPA-HQ-OPPT-2019-0502-0059. 

11. Occupational Safety and Health 

Administration. Permissible Exposure 

Limits—Annotated Tables. Accessed June 

13, 2022. https://www.osha.gov/annotatedpels. 

Authority: 15 U.S.C. 2601 et seq. 

Dated: June 27, 2022. 

Michal Freedhoff, 

Assistant Administrator, Office of Chemical 

Safety and Pollution Prevention. 

[FR Doc. 2022–14016 Filed 6–29–22; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

[EPA–R10–OW–2022–0418; FRL–9860–02– 

R10] 

Proposed Determination To Prohibit 

and Restrict the Use of Certain Waters 

Within Defined Areas as Disposal 

Sites; Pebble Deposit Area, Southwest 

Alaska; Extension of Comment Period 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Notice of extension of public 

comment period and public hearing 

comment period. 


jspears on DSK121TN23PROD with NOTICES1
39092 Federal Register / Vol. 87, No. 125 / Thursday, June 30, 2022 / Notices 

SUMMARY: The Environmental Protection 

Agency (EPA) is extending the public 

comment period for its 2022 Proposed 

Determination to Prohibit and Restrict 

the Use of Certain Waters Within 

Defined Areas as Disposal Sites; Pebble 

Deposit Area, Southwest Alaska issued 

pursuant to Section 404(c) of the Clean 

Water Act (CWA). Notice of availability 

and notice of public hearing were 

published in the Federal Register on 

May 26, 2022. The notice provided that 

the public comment period would 

remain open through July 5, 2022. The 

public comment period for the 2022 

Proposed Determination and the post 

hearing comment period are hereby 

extended through September 6, 2022. 

DATES: The comment period for the 

2022 Proposed Determination published 

May 26, 2022 (87 FR 32021) is extended. 

Written comments on the 2022 

Proposed Determination must be 

received on or before September 6, 

2022. 

ADDRESSES: 

I. How to Obtain a Copy of the 

Proposed Determination: The proposed 

determination is available primarily via 

the internet on the EPA Region 10 

Bristol Bay site at www.epa.gov/ 

bristolbay. 

II. How to Submit Comments to the 

Docket at www.regulations.gov: 

Submit your comments, identified by 

Docket ID No. EPA–R10–OW–2022– 

0418, by one of the following methods: 

Federal eRulemaking Portal 

(recommended method of comment 

submission): Follow the online 

instructions at http://

www.regulations.gov for submitting 

comments. 

Email: ow-docket@epa.gov. Include 

the docket number EPA–R10–OW– 

2022–0418 in the subject line of the 

message. 

Mail and Hand Delivery/Courier: 

Send your original comments and three 

copies to: Water Docket, Environmental 

Protection Agency, Mail Code 2822T, 

1200 Pennsylvania Avenue NW, 

Washington, DC 20460, Attention: 

Docket ID No. EPA–R10–OW–2022– 

0418. 

Hand Delivery/Courier: Deliver your 

comments to EPA Docket Center, EPA 

West, Room 3334, 1301 Constitution 

Avenue NW, Washington, DC 20460, 

Attention: Docket ID No. EPA–R10– 

OW–2022–0418. Such deliveries are 

accepted only during the Docket’s 

normal hours of operation, 8:30 a.m. to 

4:30 p.m. ET, Monday through Friday 

(excluding legal holidays). Special 

arrangements should be made for 

deliveries of boxed information. The 

telephone number for the Water Docket 

is (202) 566–2426. 

Instructions: EPA’s policy is that all 

comments received will be included in 

the public docket without change and 

will be made available online at http:// 

www.regulations.gov, including any 

personal information provided, unless 

the comment includes information 

claimed to be Confidential Business 

Information (CBI) or other information 

disclosure of which is restricted by 

statute. Do not submit information that 

you consider to be CBI or otherwise 

protected information through http://

www.regulations.gov or email. The 

http://www.regulations.gov website is 

an ‘‘anonymous access’’ system, which 

means EPA will not know your identity 

or contact information unless you 

provide it in the body of your comment. 

If you send an email comment directly 

to EPA without going through http://

www.regulations.gov, your email 

address will be captured automatically 

and included as part of the comment 

that is placed in the public docket and 

made publicly available on the internet. 

Multimedia submissions (audio, video, 

etc.) must be accompanied by a written 

comment. The written comment is 

considered the official comment and 

should include discussion of all points 

you wish to make. EPA will generally 

not consider comments or comment 

contents located outside of the primary 

submission (i.e., on the web, cloud, or 

other file sharing system). For 

additional submission methods, the full 

EPA public comment policy, 

information about CBI or multimedia 

submissions, and general guidance on 

making effective comments, please visit 

https://www.epa.gov/dockets/ 

commenting-epa-dockets. 

FOR FURTHER INFORMATION CONTACT: For 

information on the public comment 

period, contact the Water Docket; 

telephone: (202) 566–2426 or email: 

owdocket@epa.gov. For information 

concerning the proposed determination, 

contact Erin Seyfried; telephone (206) 

553–0040 or email: r10bristolbay@

epa.gov. For more information about 

EPA’s efforts in Bristol Bay, copies of 

the Section 404(c) proposed 

determination, see http://www.epa.gov/ 

bristolbay. 

SUPPLEMENTARY INFORMATION: EPA 

Region 10 has received several 

communications regarding an extension 

of the comment period, including 

requests to extend the comment period 

by 60 days and 120 days. EPA Region 

10 also received requests not to extend 

the public comment period. EPA Region 

10 has considered each of these requests 

and finds that good cause exists 

pursuant to 40 CFR 231.8 to extend the 

public comment period through 

September 6, 2022 to provide sufficient 

time for all parties to meaningfully 

comment on the 2022 Proposed 

Determination and supporting 

documents. 

Casey Sixkiller, 

Regional Administrator, Region 10. 

[FR Doc. 2022–13986 Filed 6–29–22; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

[R01–OW–2022; FRL–9918–01–R1] 

Program Requirement Revisions 

Related to the Public Water System 

Supervision Program for the State of 

Connecticut 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Notice. 

SUMMARY: Notice is hereby given that 

the State of Connecticut is revising its 

approved Public Water System 

Supervision (PWSS) program to meet 

the requirements of the Safe Drinking 

Water Act (SDWA). 

DATES: All interested parties may 

request a public hearing for any of the 

above EPA determinations. A request for 

a public hearing must be submitted by 

July 29, 2022 to the Regional 

Administrator at the address shown 

below. Frivolous or insubstantial 

requests for a hearing may be denied by 

the Regional Administrator. 

However, if a substantial request for a 

public hearing is made by this date, a 

public hearing will be held. If no timely 

and appropriate request for a hearing is 

received, and the Regional 

Administrator does not elect to hold a 

hearing on his own motion, this 

determination shall become final and 

effective July 29, 2022. 

Any request for a public hearing shall 

include the following information: (1) 

the name, address, and telephone 

number of the individual organization, 

or other entity requesting a hearing; (2) 

a brief statement of the requesting 

person’s interest in the Regional 

Administrator’s determination; (3) 

information that the requesting person 

intends to submit at such hearing; and 

(4) the signature of the individual 

making the request, or if the request is 

made on behalf of an organization or 

other entity, the signature of a 

responsible official of the organization 

or other entity. 

ADDRESSES: All documents relating to 

this determination are available for 


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