4942 Federal Register / Vol. 89, No. 17 / Thursday, January 25, 2024 / Notices 

the project and concludes that licensing 

the project, with appropriate 

environmental protective measures, 

would not constitute a major federal 

action that would significantly affect the 

quality of the human environment. 

The Commission provides all 

interested persons with an opportunity 

to view and/or print the EA via the 

internet through the Commission’s 

Home Page (http://www.ferc.gov/), using 

the ‘‘eLibrary’’ link. Enter the docket 

number, excluding the last three digits 

in the docket number field, to access the 

document. For assistance, contact FERC 

Online Support at 

FERCOnlineSupport@ferc.gov, or at 

(866) 208–3676 (toll-free), or (202) 502– 

8659 (TTY). 

You may also register online at 

https://ferconline.ferc.gov/FERC

Online.aspx to be notified via email of 

new filings and issuances related to this 

or other pending projects. For 

assistance, contact FERC Online 

Support. 

The Commission’s Office of Public 

Participation (OPP) supports meaningful 

public engagement and participation in 

Commission proceedings. OPP can help 

members of the public, including 

landowners, environmental justice 

communities, Tribal members and 

others, access publicly available 

information and navigate Commission 

processes. For public inquiries and 

assistance with making filings such as 

interventions, comments, or requests for 

rehearing, the public is encouraged to 

contact OPP at (202) 502–6595, or OPP@

ferc.gov. 

Any comments should be filed within 

30 days from the date of this notice. 

The Commission strongly encourages 

electronic filing. Please file comments 

using the Commission’s eFiling system 

at http://www.ferc.gov/docs-filing/ 

efiling.asp. Commenters can submit 

brief comments up to 6,000 characters, 

without prior registration, using the 

eComment system at http://

www.ferc.gov/docs-filing/ 

ecomment.asp. You must include your 

name and contact information at the end 

of your comments. For assistance, 

please contact FERC Online Support. In 

lieu of electronic filing, you may submit 

a paper copy. Submissions sent via the 

U.S. Postal Service must be addressed 

to: Debbie-Anne Reese, Acting 

Secretary, Federal Energy Regulatory 

Commission, 888 First Street NE, Room 

1A, Washington, DC 20426. 

Submissions sent via any other carrier 

must be addressed to: Debbie-Anne 

Reese, Acting Secretary, Federal Energy 

Regulatory Commission, 12225 Wilkins 

Avenue, Rockville, Maryland 20852. 

The first page of any filing should 

include docket number P–6951–018. 

For further information, contact 

Michael Spencer at 202–502–6093 or 

michael.spencer@ferc.gov. 

Dated: January 19, 2024. 

Debbie-Anne Reese, 

Acting Secretary. 

[FR Doc. 2024–01468 Filed 1–24–24; 8:45 am] 

BILLING CODE 6717–01–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

[EPA–HQ–OAR–2007–1196; FRL–11653–01– 

OAR] 

Recent Postings of Broadly Applicable 

Alternative Test Methods 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Notice of availability. 

SUMMARY: This notice announces the 

broadly applicable alternative test 

method approval decisions that the 

Environmental Protection Agency (EPA) 

made under and in support of New 

Source Performance Standards (NSPS) 

and the National Emission Standards for 

Hazardous Air Pollutants (NESHAP) 

between January 1, 2023, and December 

31, 2023. 

FOR FURTHER INFORMATION CONTACT: An 

electronic copy of each alternative test 

method approval document is available 

at https://www.epa.gov/emc/broadlyapplicable-approved-alternative-testmethods. For questions about this 

notice, contact Mr. Steffan Johnson, Air 

Quality Assessment Division, Office of 

Air Quality Planning and Standards 

(E143–02), Environmental Protection 

Agency, Research Triangle Park, NC 

27711; telephone number: (919) 541– 

4790; email address: johnson.steffan@

epa.gov. For technical questions about 

individual alternative test method 

decisions, refer to the contact person 

identified in the individual approval 

document(s). 

SUPPLEMENTARY INFORMATION: 

I. General Information 

A. Does this notice apply to me? 

This notice will be of interest to 

entities regulated under 40 Code of 

Federal Regulations (CFR) parts 59, 60, 

61, 63 and 65; state, local, and tribal 

agencies; and the EPA Regional offices 

responsible for implementation and 

enforcement of regulations under 40 

CFR parts 59, 60, 61, 63, and 65. 

B. How can I get copies of this 

information? 

You may access copies of the broadly 

applicable alternative test method 

approval documents at https://

www.epa.gov/emc/broadly-applicableapproved-alternative-test-methods. 

II. Background 

This notice identifies broadly 

applicable alternative test methods that 

the EPA approved in 2023 under the 

NSPS, 40 CFR part 60, and the NESHAP 

and 40 CFR part 63 programs. See Table 

1 of this notice for the summary of these 

test methods. Source owners and 

operators may voluntarily use these 

broadly applicable alternative test 

methods in lieu of otherwise required 

test methods or related testing 

procedures. Use of these broadly 

applicable alternative test methods are 

not intended to, and should not, change 

the applicable emission standards. 

The Administrator has the authority 

to approve the use of alternative test 

methods for compliance with 

requirements under 40 CFR parts 59, 60, 

61, 63, and 65. This authority is found 

in 40 CFR 60.8(b)(3), 61.13(h)(1)(ii), and 

63.7(e)(2)(ii). Additional and similar 

authority can be found in 40 CFR 

59.104(f) and 65.158(a)(2). The criteria 

for approval and procedures for 

submission and review of broadly 

applicable alternative test methods are 

explained in a previous Federal 

Register notice published at 72 FR 4257 

(January 30, 2007) and located at 

https://www.epa.gov/emc/broadlyapplicable-approved-alternative-testmethods. As explained in this notice, 

we will announce approvals for broadly 

applicable alternative test methods at 

https://www.epa.gov/emc/broadlyapplicable-approved-alternative-testmethods as they are issued and publish 

an annual notice that summarizes 

approvals for broadly applicable 

alternative test methods during the 

preceding year. 

As also explained in the January 30, 

2007 notice, our approval decisions 

involve thorough technical reviews of 

numerous source-specific requests for 

alternatives and modifications to test 

methods and procedures. Based on 

these reviews, we have often found that 

these modifications or alternatives 

would be equally valid and appropriate 

to apply to other sources within a 

particular class, category, or 

subcategory. Consequently, we have 

concluded that where either a method 

modification or an alternative method is 

clearly broadly applicable to a class, 

category, or subcategory of sources, it is 

both equitable and efficient to 


khammond on DSKJM1Z7X2PROD with NOTICES
Federal Register / Vol. 89, No. 17 / Thursday, January 25, 2024 / Notices 4943 

simultaneously approve its use for all 

appropriate sources and situations. 

Use of approved alternative test 

methods is not mandatory but rather 

permissive. Sources are not required to 

employ such a method but may choose 

to do so in appropriate circumstances. 

As specified in 40 CFR 63.7(f)(5), 

however, a source owner or operator 

electing to use an alternative method for 

40 CFR part 63 standards must continue 

to use the alternative method until 

otherwise authorized. Source owners or 

operators should, therefore, review the 

specific broadly applicable alternative 

method approval decision at https://

www.epa.gov/emc/broadly-applicableapproved-alternative-test-methods 

before electing to employ any 

alternative method. Source owners or 

operators choosing to use a broadly 

applicable alternative should also notify 

their regulatory agency prior to using 

the alternative. 

III. Approved Alternative Test Methods 

and Modifications to Test Methods 

This notice specifies five broadly 

applicable alternative test methods that 

the EPA approved between January 1, 

2023, and December 31, 2023. The 

alternative method decision letter/ 

memo designation numbers, test 

methods affected, sources allowed to 

use this alternative, and method 

modifications or alternative methods 

allowed are summarized in Table 1 of 

this notice. A summary of approval 

documents was previously made 

available on our Technology Transfer 

Network between January 1, 2023, and 

December 31, 2023. For more detailed 

information, please refer to the complete 

copies of these approval documents 

available at https://www.epa.gov/emc/ 

broadly-applicable-approvedalternative-test-methods. 

As also explained in our January 30, 

2007 notice, we will revisit approvals of 

alternative test methods in response to 

written requests or objections indicating 

that a particular approved alternative 

test method either should not be broadly 

applicable or that its use is not 

appropriate or should be limited in 

some way. Any objection to a broadly 

applicable alternative test method, as 

well as the resolution of that objection, 

will be announced at https://

www.epa.gov/emc/broadly-applicableapproved-alternative-test-methods and 

in a subsequent Federal Register notice. 

If we decide to retract a broadly 

applicable test method, we will likely 

consider the need for an appropriate 

transition period for users either to 

request case-by-case approval or to 

transition to an approved method. 

Richard A. Wayland, 

Director, Air Quality Assessment Division. 

TABLE 1—APPROVED ALTERNATIVE TEST METHODS AND MODIFICATIONS TO TEST METHODS REFERENCED IN OR

PUBLISHED UNDER APPENDICES IN 40 CFR PARTS 60 AND 63 POSTED BETWEEN JANUARY 2023 AND DECEMBER 2023 a

Alternative method 

decision letter/ 

memo number 

As an alternative or 

modification to . . . For . . . You may . . . 

ALT–151 ............... EPA Method 3A as an alternative method for EPA 

Method 3B.

Testing of regulated sources requiring the 

use of EPA Method 3B in 40 CFR, parts 

59, 60, 61, 63 and 65.

Use EPA Method 3A instead of EPA Method 

3B, whenever required to use Method 3B 

in any regulation contained within 40 CFR, 

parts 59, 60, 61, 63 and 65. 

ALT–152 ............... Certification of candidate 

Method 9 observers 

through use of a virtual 

reality (VR) headset.

Use of a VR headset-based alternative method for conducting Method 9 plume demonstrations and certification as described in 

this letter and further detailed in Attachment A as an alternative to the procedures 

of section 3.2 of Method 9 with specific limitations, as listed in the letter.

Use the VR headset-based alternative method for conducting Method 9 plume demonstrations and certification as described in 

this letter and further detailed in Attachment A as an alternative to the procedures 

of section 3.2 of Method 9. 

ALT–153 ............... EPA Method 3A as an alternative method for EPA 

Method 3B integrated 

bag analysis.

Calculation of stack gas molecular weight 

and/or diluent correction to measured pollutant concentrations.

Use analysis procedures similar to those 

found in Method 3A to analyze the bag 

sample(s) collected according to Method 

3B. 

ALT–154 ............... ASTM E–2515 filter 

gravimetric pre/post-test 

filter mass assessments 

per method direction in 

section 9.4.4.

Consistent measurement of filter media and 

associated gaskets, as a paired set, to 

lower overall measurement uncertainty.

Desiccate and perform the pre-test processing (taring) of filters in pairs as is currently allowed for filter gaskets in section 

9.4.4 (pre-test) and 10.2.1 (post-test) when 

conducting testing of wood heaters under 

Subpart AAA and determine mass emissions. 

ALT–155 ............... ASTM E–2515 dilution tunnel minimum velocity requirement as stated in 

section 9.2.1.

The use of low flow manometers to measure 

flow velocities as low as 180 fpm during 

certain PM measurement tests.

Measure velocities as low as 180 fpm, in a 

dilution tunnel greater than 8′′ diameter, 

using a Ptype pitot tube and a micromanometer gauge more sensitive than the 

method specified 0.001′′ of water such as a 

manometer with resolution to 0.0005 

inches of water or less. 

aSource owners or operators should review the specific broadly applicable alternative method approval letter at https://www.epa.gov/emc/ 

broadly-applicable-approved-alternative-test-methods before electing to employ any alternative test method. 

[FR Doc. 2024–01495 Filed 1–24–24; 8:45 am] 

BILLING CODE 6560–50–P 


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