[Federal Register Volume 60, Number 64 (Tuesday, April 4, 1995)]
[Notices]
[Pages 17061-17062]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 95-8208]



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ENVIRONMENTAL PROTECTION AGENCY
Office of Research and Development
[FRL-5183-4]


Ambient Air Monitoring Reference and Equivalent Methods; 
Equivalent Method Designation

    Notice is hereby given that EPA, in accordance with 40 CFR part 53, 
has designated another equivalent method for the measurement of ambient 
concentrations of sulfur dioxide. The new equivalent method is an 
automated method (analyzer) that utilizes a measurement principle based 
on UV fluorescence. The new designated method is identified as follows:
    EQSA-0495-100, ``Advanced Pollution Instrumentation, Inc. Model 
100A Sulfur Dioxide Analyzer,'' operated on any full scale range 
between 0-50 ppb* and 0-1000 ppb, at any temperature in the range of 5 
to 40 degrees C, with a 5-micron TFE filter element installed in the 
filter assembly, with either the vendor-supplied internal pump or a 
user- or vender-supplied external vacuum pump capable of maintaining an 
absolute pressure of 35 cm (14 inches) of mercury (or less) at 1.0 
standard liter per minute flow rate, with the following software 
settings: Dynamic zero: OFF; Dynamic span: OFF; AutoCal: ON or OFF; 
Dual range: ON or OFF; Autorange: ON or OFF; Temp/pressure 
compensation: ON; dilution factor: 1.0; and with or without any of the 
following options:

Rack mount with chassis slides
Rack mount without slides, ears only
Fluorocarbon zero/span valves
Internal zero/span (IZS)
SO<INF>2 Permeation tube, uncertified, 0.4 ppm @ 0.7 L/min
SO<INF>2 Permeation tube, certified, 0.4 ppm @ 0.7 L/min
SO<INF>2 Permeation tube, uncertified, 0.8 ppm @ 0.7 L/min
SO<INF>2 Permeation tube, certified, 0.8 ppm @ 0.7 L/min
4-20 mA, isolated outputs
External pump
Rack mount for external pump with tray
Status outputs
RS-232 output

*Users should be aware that designation of this analyzer for operation 
on ranges less than 500 ppb is based on meeting the same absolute 
performance specifications required for the 0-500 ppb range. Thus, 
designation of lower ranges does not imply commensurably better 
performance than that obtained on the 0-500 ppb range.

    Note: In addition to the U.S. electrical power voltage and 
frequency, this analyzer is approved for use, with proper factory 
configuration, on 50 Hertz line frequency and any of the following 
voltage ranges: 200-242 Vac (220 volts nominal); 216-264 Vac (240 
volts nominal).

    This method is available from Advanced Pollution Instrumentation, 
Inc., 8815 Production Avenue, San Diego, California 92121-2219. A 
notice of receipt of application for this method appeared in the 
Federal Register, Volume 60, January 9, 1995, page 2386.
    A test analyzer representative of this method has been tested by 
the applicant, in accordance with the test procedures specified in 40 
CFR part 53. After reviewing the results of these tests and other 
information submitted by the applicant, EPA has determined, in 
accordance with part 53, that this method should be designated as an 
equivalent method. The information submitted by the applicant will be 
kept on file at EPA's Atmospheric Research and Exposure Assessment 
Laboratory, Research Triangle Park, North Carolina 27711, and will be 
available for inspection to the extent consistent with 40 CFR part 2 
(EPA's regulations implementing the Freedom of Information Act).
    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 
limitations (e.g., operating range) specified in the applicable 
designation (see description of the method above). Vendor modifications 
of a designated method used for purposes of part 58 are permitted only 
with prior approval of EPA, as provided in part 53. Provisions 
concerning modification of such methods by users are specified under 
section 2.8 of appendix C to 40 CFR part 58 (Modifications of Methods 
by Users).
    In general, this designation applies to any analyzer which is 
identical to the analyzer described in the designation. In some cases, 
similar analyzers manufactured prior to the designation may be upgraded 
(e.g., by minor modification or by substitution of a new operation or 
instruction manual) so as to be identical to the designated method and 
thus achieve designation status at a modest cost. The manufacturer 
should be consulted to determine the feasibility of such upgrading.
    Part 53 requires that sellers of designated methods comply with 
certain conditions. These conditions are given in 40 CFR 53.9 and are 
summarized below:
    (1) A copy of the approved operation or instruction manual must 
accompany the analyzer when it is delivered to the ultimate purchaser.
    (2) The analyzer must not generate any unreasonable hazard to 
operators or to the environment.
    (3) The analyzer must function within the limits of the performance 
specifications given in table B-1 of part 53 for at least one year 
after delivery when maintained and operated in accordance with the 
operation manual.
    (4) Any analyzer offered for sale as a reference or equivalent 
method must bear a label or sticker indicating that it has been 
designated as a reference or equivalent method in accordance with part 
53.
    (5) If such a analyzer has two or more selectable ranges, the label 
or sticker [[Page 17062]] must be placed in close proximity to the 
range selector and indicate which range or ranges have been included in 
the reference or equivalent method designation.
    (6) An applicant who offers analyzers for sale as reference or 
equivalent methods is required to maintain a list of ultimate 
purchasers of such analyzers and to notify them within 30 days if a 
reference or equivalent method designation applicable to the analyzers 
has been canceled or if adjustment of the analyzers is necessary under 
40 CFR 53.11(b) to avoid a cancellation.
    (7) An applicant who modifies an analyzer previously designated as 
a reference or equivalent method is not permitted to sell the analyzer 
(as modified) as a reference or equivalent method (although he may 
choose to sell it without such representation), nor to attach a label 
or sticker to the analyzer (as modified) under the provisions described 
above, until he has received notice under 40 CFR 53.14(c) that the 
original designation or a new designation applies to the method as 
modified or until he has applied for and received notice under 40 CFR 
53.8(b) of a new reference or equivalent method determination for the 
analyzer as modified.
    Aside from occasional breakdowns or malfunctions, consistent or 
repeated noncompliance with any of these conditions should be reported 
to: Director, Atmospheric Research and Exposure Assessment Laboratory, 
Department E (MD-77), U.S. Environmental Protection Agency, Research 
Triangle Park, North Carolina 27711.
    Designation of this equivalent method will provide assistance to 
the States in establishing and operating their air quality surveillance 
systems under part 58. Technical questions concerning the method should 
be directed to the manufacturer. Additional information concerning this 
action may be obtained from Frank F. McElroy, Methods Research and 
Development Division (MD-77), Atmospheric Research and Exposure 
Assessment Laboratory, U.S. Environmental Protection Agency, Research 
Triangle Park, North Carolina 27711, (919) 541-2622.
Joseph K. Alexander,
Acting Assistant Administrator for Research and Development.
[FR Doc. 95-8208 Filed 4-3-95; 8:45 am]
BILLING CODE 6560-50-M