76212 Federal Register / Vol. 88, No. 213 / Monday, November 6, 2023 / Notices 

Mobile Sources Technical Review 

Subcommittee (MSTRS), which is a 

subcommittee under the Clean Air Act 

Advisory Committee (CAAAC). This is a 

virtual meeting and open to the public. 

The meeting will include discussion of 

current topics and presentations about 

activities being conducted by EPA’s 

Office of Transportation and Air 

Quality. MSTRS listserv subscribers will 

receive notification when the agenda is 

available on the Subcommittee website. 

To subscribe to the MSTRS listserv, 

send an email to MSTRS@epa.gov. 

DATES: EPA will hold a virtual public 

meeting on Wednesday, November 29th 

from 9 a.m. to 5 p.m. eastern standard 

time (EST). Please monitor the website 

https://www.epa.gov/caaac/mobilesources-technical-review-subcommitteemstrs-caaac for any changes to meeting 

logistics. The final meeting agenda will 

be posted on the website. 

ADDRESSES: For information on the 

public meeting or to register to attend, 

please contact MSTRS@epa.gov. 

FOR FURTHER INFORMATION CONTACT: Any 

member of the public who wishes to 

attend the meeting or provide comments 

should express this intent by emailing 

MSTRS@epa.gov no later than Monday, 

November 20, 2023. Further information 

concerning this public meeting and 

general information concerning the 

MSTRS can be found at: https://

www.epa.gov/caaac/mobile-sourcestechnical-review-subcommittee-mstrscaaac. Other MSTRS inquiries can be 

directed to Jessie Mroz, the Designated 

Federal Officer for MSTRS, Office of 

Transportation and Air Quality, at 202– 

564–1094 or mroz.jessica@epa.gov. 

SUPPLEMENTARY INFORMATION: During the 

meeting, the Subcommittee may also 

hear progress reports from its 

workgroups as well as updates and 

announcements on Office of 

Transportation and Air Quality 

activities of general interest to 

attendees. 

Participation in virtual public 

meetings. The virtual public meeting 

will provide interested parties the 

opportunity to participate in this 

Federal Advisory Committee meeting. 

For individuals with disabilities: For 

information on access or services for 

individuals with disabilities, please 

email MSTRS@epa.gov. To request 

accommodate of a disability, please 

email MSTRS@epa.gov, preferably at 

least 10 business days prior to the 

meeting, to give EPA as much time as 

possible to process your request. 

EPA is asking all meeting attendees, 

even those who do not intend to speak, 

to register for the meeting by sending an 

email to the address listed in the FOR

FURTHER INFORMATION CONTACT section 

above, by Monday, November 20, 2023. 

This will help EPA ensure that 

sufficient participation capacity will be 

available. 

Please note that any updates made to 

any aspect of the meeting logistics, 

including potential additional sessions, 

will be posted online at https://

www.epa.gov/caaac/mobile-sourcestechnical-review-subcommittee-mstrscaaac. While EPA expects the meeting 

to go forward as set forth above, please 

monitor the website for any updates. 

Jessica Mroz, 

Designated Federal Officer, Mobile Source 

Technical Review Subcommittee, Office of 

Transportation and Air Quality. 

[FR Doc. 2023–24430 Filed 11–3–23; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

[FRL–11450–01–ORD] 

Ambient Air Monitoring Reference and 

Equivalent Methods; Designation of 

Two New Equivalent Methods 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Notice of the designation of two 

new equivalent methods for monitoring 

ambient air quality. 

SUMMARY: Notice is hereby given that 

the Environmental Protection Agency 

(EPA) has designated one new 

equivalent method for measuring 

concentrations of Lead (pb), and one 

new equivalent method for measuring 

concentrations of Particulate Matter 

(PM10) in ambient air. 

FOR FURTHER INFORMATION CONTACT: 

Robert Vanderpool, Air Methods and 

Characterization Division (MD–D205– 

03), Center for Environmental 

Measurements and Modeling, U.S. EPA, 

Research Triangle Park, North Carolina 

27711. Phone: 919–541–7877. Email: 

Vanderpool.Robert@epa.gov. 

SUPPLEMENTARY INFORMATION: In 

accordance with regulations at 40 CFR 

part 53, the EPA evaluates various 

methods for monitoring the 

concentrations of those ambient air 

pollutants for which EPA has 

established National Ambient Air 

Quality Standards (NAAQS) as set forth 

in 40 CFR part 50. Monitoring methods 

that are determined to meet specific 

requirements for adequacy are 

designated by the EPA as either 

reference or equivalent methods (as 

applicable), thereby permitting their use 

under 40 CFR part 58 by States and 

other agencies for determining 

compliance with the NAAQS. A list of 

all reference or equivalent methods that 

have been previously designated by EPA 

may be found at http://www.epa.gov/ 

ttn/amtic/criteria.html. 

The EPA hereby announces the 

designation of one new equivalent 

method for measuring concentrations of 

Pb, and one new equivalent method for 

measuring concentrations of PM10 in 

ambient air. These designations are 

made under the provisions of 40 CFR 

part 53, as amended on October 26, 

2015 (80 FR 65291–65468). 

The new equivalent method for Pb is 

a manual method that uses the sampling 

procedure specified in the Reference 

Method for the Determination of Lead in 

Suspended Particulate Matter Collected 

from Ambient Air (High-Volume 

Sampler), 40 CFR part 50, appendix G, 

with a different extraction and 

analytical procedure. The method is 

identified as follows: 

EQL–0723–261, ‘‘Microwave Assisted 

Digestion and Quadrupole Inductively 

Coupled Plasma—Mass Spectrometry 

(South Coast Air Quality Management 

District Laboratory)’’ ‘‘Determination of 

Lead (Pb) on TSP Hi-Volume Filters by 

Microwave Assisted Digestion and 

Quadrupole Inductively Coupled 

Plasma Mass Spectrometry (Quadrupole 

ICP–MS).’’ A sample of total suspended 

particulate matter (TSP) is collected on 

a glass or quartz fiber filter, using the 

sampler and procedure of the EPA 

Reference Method for the Determination 

of Suspended Particulate Matter in the 

Atmosphere (High-Volume Method) (40 

CFR part 50, appendix B). The TSP 

sample is extracted with a nitric acid 

solution and digested in a microwave 

system, centrifuged and brought to a 

final acid concentration of 2–3%. The 

lead content of the sample extract is 

analysed by Quadrupole Inductively 

Coupled Plasma Mass Spectrometry 

(Quadrupole ICP–MS), based on EPA 

Method IO–3.5. 

The application for equivalent 

method determination for this Pb 

method was submitted by South Coast 

Air Quality Management District, 21865 

Copley Drive, Diamond Bar, CA 91765 

and was received by the Office of 

Research and Development on July 11, 

2023. 

The new equivalent method for PM10

is an automated monitoring method 

(monitor) utilizing the measurement 

principle based on beta-ray attenuation. 

This newly designated equivalent 

method is identified as follows: 

EQPM–0923–262, ‘‘Vasthi 

Instruments Pvt. Ltd Vair-9009 p.m.10

Monitor,’’ beta-ray monitor operated in 

a range of 0–5mg/m3, with an 

operational temperature range of 0 °C to 


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Federal Register / Vol. 88, No. 213 / Monday, November 6, 2023 / Notices 76213 

40 °C. The unit is configured for 24, 1- 

hour average measurements of PM10 by 

beta attenuation, using a glass fiber 

paper tape roll (VPM–1006). The unit 

operates at a sample flow rate of 16.67 

liters/min, with PM10 inlet meeting 40 

CFR part 50 appendix L specifications, 

and heated inlet to control sample 

relative humidity to 35%. Instrument 

must be operated in accordance with the 

Vair-9009 Operating Manual. This 

designation applies to PM10

measurements only. 

This application for an equivalent 

method determination for this PM10

method was received by the Office of 

Research and Development on July 11, 

2023. This monitor is commercially 

available from the applicant, Vasthi 

Instruments, Guntur 522 001, Andhra 

Pradesh, India. 

A representative test analyzer was 

tested in accordance with the applicable 

test procedures specified in 40 CFR part 

53, as amended on October 26, 2015. 

After reviewing the results of those tests 

and other information submitted by the 

applicant, EPA has determined, in 

accordance with 40 CFR part 53, that 

these methods should be designated as 

equivalent methods. 

As designated equivalent methods, 

these methods are acceptable for use by 

states and other air monitoring agencies 

under the requirements of 40 CFR part 

58, Ambient Air Quality Surveillance. 

For such purposes, these methods must 

be used in strict accordance with the 

operation or instruction manual 

associated with the method and subject 

to any specifications and limitations 

(e.g., configuration or operational 

settings) specified in the designated 

method description (see the 

identification of the methods above). 

Use of the methods also should be in 

general accordance with the guidance 

and recommendations of applicable 

sections of the ‘‘Quality Assurance 

Handbook for Air Pollution 

Measurement Systems, Volume I,’’ EPA/ 

600/R–94/038a and ‘‘Quality Assurance 

Handbook for Air Pollution 

Measurement Systems, Volume II, 

Ambient Air Quality Monitoring 

Program,’’ EPA–454/B–13–003, (both 

available at http://www.epa.gov/ttn/ 

amtic/qalist.html). Provisions 

concerning modification of such 

methods by users are specified under 

section 2.8 (Modifications of Methods 

by Users) of appendix C to 40 CFR part 

58. 

Consistent or repeated noncompliance 

with any of these conditions should be 

reported to: Director, Air Methods and 

Characterization Division (MD–D205– 

03), Center for Environmental 

Measurements and Modeling, U.S. 

Environmental Protection Agency, 

Research Triangle Park, North Carolina 

27711. 

Designation of these equivalent 

methods are intended to assist the States 

in establishing and operating their air 

quality surveillance systems under 40 

CFR part 58. Questions concerning the 

commercial availability or technical 

aspects of these methods should be 

directed to the applicants. 

Alice Gilliland, 

Acting Director, Center for Environmental 

Measurements and Modeling. 

[FR Doc. 2023–24495 Filed 11–3–23; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

[EPA–HQ–OPP–2022–0223; FRL–11467–01– 

OCSPP] 

Final Cancellation Order for Certain 

Chlorpyrifos Registrations and Uses 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Notice. 

SUMMARY: The Environmental Protection 

Agency (EPA) hereby announces its 

final cancellation order for the 

cancellations and amendments to 

terminate uses voluntarily requested by 

the registrants and accepted by the 

Agency, of the products in Table 1 and 

Table 2 of Unit II, pursuant to the 

Federal Insecticide, Fungicide, and 

Rodenticide Act (FIFRA). This final 

cancellation order follows a May 3, 

2023, Federal Register Notice of Receipt 

of Requests from the registrants listed in 

Table 3 of Unit II, to voluntarily cancel 

or amend these product registrations. In 

the May 3, 2023, notice, EPA indicated 

that it would issue a final order 

implementing the cancellations and 

amendments, unless the Agency 

received substantive comments within 

the 30-day comment period that would 

merit further review of these requests, or 

unless the registrants withdrew their 

requests. The Agency received two 

comments on the notice, which are 

summarized in Unit III.B. EPA’s 

responses to these comments and its 

determination that these comments do 

not merit further review of these 

cancellation and amendment requests 

are included in Unit III.C. None of the 

registrants withdrew their request for 

these voluntary cancellations or 

amendments. Accordingly, EPA hereby 

grants the requested cancellations and 

amendments to terminate uses as shown 

in this cancellation order. Any 

distribution, sale, or use of existing 

stocks of these products subject to this 

cancellation order is permitted only in 

accordance with the terms of this order. 

DATES: The cancellations and 

amendments are effective November 6, 

2023. 

FOR FURTHER INFORMATION CONTACT: 

Patricia Biggio, Pesticide Re-Evaluation 

Division (7508M), Office of Pesticide 

Programs, Environmental Protection 

Agency, 1200 Pennsylvania Ave. NW, 

Washington, DC 20460–0001; telephone 

number: (202) 566–0700; email address: 

OPPChlorpyrifosInquiries@epa.gov. 

SUPPLEMENTARY INFORMATION: 

I. General Information 

A. Does this action apply to me? 

This action is directed to the public 

in general and may be of interest to a 

wide range of stakeholders including 

environmental, human health, and 

agricultural advocates; the chemical 

industry; pesticide users; and members 

of the public interested in the sale, 

distribution, or use of pesticides. Since 

others also may be interested, the 

Agency has not attempted to describe all 

the specific entities that may be affected 

by this action. 

B. How can I get copies of this document 

and other related information? 

The docket for this action, identified 

by docket identification (ID) number 

EPA–HQ–OPP–2022–0223, is available 

at https://www.regulations.gov or at the 

Office of Pesticide Programs Regulatory 

Public Docket (OPP Docket) in the 

Environmental Protection Agency 

Docket Center (EPA/DC), West William 

Jefferson Clinton Bldg., Rm. 3334, 1301 

Constitution Ave. NW, Washington, DC 

20460–0001. The Public Reading Room 

is open from 8:30 a.m. to 4:30 p.m., 

Monday through Friday, excluding legal 

holidays. The telephone number for the 

Public Reading Room is (202) 566–1744. 

Please review the additional 

information about the docket available 

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

II. What action is the Agency taking? 

This document announces the 

cancellations and amendments through 

termination of certain uses, as requested 

by registrants, of products registered 

under FIFRA section 3 (7 U.S.C. 136a). 

These registrations are listed in 

sequence by registration number in 

Table 1 and Table 2 of this Unit. 


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