[Federal Register Volume 75, Number 80 (Tuesday, April 27, 2010)]
[Pages 22126-22127]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-9756]




Office of Research and Development; Ambient Air Monitoring 
Reference and Equivalent Methods: Designation of One New Equivalent 

AGENCY: Environmental Protection Agency.

ACTION: Notice of the designation of one new equivalent method for 
monitoring ambient air quality.


SUMMARY: Notice is hereby given that the Environmental Protection 
Agency (EPA) has designated, in accordance with 40 CFR Part 53, one new 
equivalent method for measuring concentrations of ozone (O3) 
in the ambient air.

FOR FURTHER INFORMATION CONTACT: Surender Kaushik, Human Exposure and 
Atmospheric Sciences Division (MD-D205-03), National Exposure Research 
Laboratory, U.S. EPA, Research Triangle Park, North Carolina 27711. 
Phone: (919) 541-5691, e-mail: [email protected].

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 (NAAQSs) 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 methods or equivalent methods (as applicable), thereby 
permitting their use under 40 CFR Part 58 by States and other agencies 
for determining compliance with the NAAQSs.
    The EPA hereby announces the designation of one new equivalent 
method for measuring ozone (O3) in the ambient air. This 
designation is made under the provisions of 40 CFR Part 53, as amended 
on November 12, 2008 (73 FR 67057-67059).
    The new equivalent method for O3 is an automated method 
that utilizes a measurement principle based on ultraviolet absorption 
photometry. The newly designated equivalent method for O3 is 
identified as follows:

    EQOA-0410-190, ``2B Technologies Model 202 Ozone Monitor,'' 
enclosed in a 3.5'' x 8.3'' x 11.6'' case, operated in an 
environment of 10 - 40[deg]C, with temperature/pressure 
compensation, using a 10 second average, 10 second display update, 
on-board backup sample pump, with a 110-220V AC power adapter or a 
12V DC source such as a cigarette lighter adapter plugged into a 12V 
DC source or a 12V DC battery for portable operation, 4.0 watt power 
consumption, external TFE inlet filter and holder, serial data port 
with computer cable, BNC connector for 0-2.5V user scalable analog 
output, internal data logger, 3-analog inputs for external signals 
(such as temperature, relative humidity or pressure), rack mount 
hardware, internal DewLine for humidity control and operated 
according to the Model 202 Ozone Monitor Operation Manual.

[[Page 22127]]

    The application for the equivalent method determination for this 
candidate method was received by the EPA on November 3, 2009. The 
monitor is commercially available from the applicant, 2B Technologies, 
Incorporated, 2100 Central Ave., Suite 105, Boulder, CO 80301.
    A test monitor representative of this method has been tested in 
accordance with the applicable test procedures specified in 40 CFR Part 
53, as amended on November 12, 2008. After reviewing the results of 
those tests and other information submitted in the application, EPA has 
determined, in accordance with Part 53, that this method should be 
designated as an equivalent method for ozone. The information provided 
by the applicant will be kept on file, either at EPA's National 
Exposure Research Laboratory, Research Triangle Park, North Carolina 
27711 or in an approved archive storage facility, and will be available 
for inspection (with advance notice) to the extent consistent with 40 
CFR Part 2 (EPA's regulations implementing the Freedom of Information 
    As a designated equivalent method, this method is 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, 
the method 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 applicable designated method description 
(see the identification of the method above).
    Use of the method should also 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-08-003, December 2008 (available at http://www.epa.gov/ttnamti1/files/ambient/pm25/qa/QA-Handbook-Vol-II.pdf). 
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.
    In general, a method designation applies to any sampler or analyzer 
which is identical to the sampler or analyzer described in the 
application for designation. In some cases, similar samplers or 
analyzers manufactured prior to the designation may be upgraded or 
converted (e.g., by minor modification or by substitution of the 
approved operation or instruction manual) so as to be identical to the 
designated method and thus achieve designated status. The manufacturer 
should be consulted to determine the feasibility of such upgrading or 
    Part 53 requires that sellers of designated reference or equivalent 
method analyzers or samplers comply with certain conditions. These 
conditions are specified in 40 CFR 53.9.
    Aside from occasional breakdowns or malfunctions, consistent or 
repeated noncompliance with any of these conditions should be reported 
to: Director, Human Exposure and Atmospheric Sciences Division (MD-
E205-01), National Exposure Research Laboratory, U.S. Environmental 
Protection Agency, Research Triangle Park, North Carolina 27711.
    Designation of this new equivalent method is intended to assist the 
States in establishing and operating their air quality surveillance 
systems under 40 CFR Part 58. Questions concerning the technical 
aspects of the method should be directed to the applicant.

    Dated: April 19, 2010.
Jewel F. Morris,
Acting Director, National Exposure Research Laboratory.
[FR Doc. 2010-9756 Filed 4-26-10; 8:45 am]