[Federal Register Volume 64, Number 22 (Wednesday, February 3, 1999)]
[Rules and Regulations]
[Pages 5188-5189]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 99-55507]


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ENVIRONMENTAL PROTECTION AGENCY

Recommended Test Methods for State Implementation Plans

40 CFR Part 51


CFR Correction

    In Title 40 of the Code of Federal Regulations, parts 50 to 51, 
revised as of July 1, 1998, the text appearing on page 345 duplicates 
the text on page 344 and should be removed. As corrected the text on 
page 345 should read as follows:
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high level of precision and accuracy for the purposes of this test. 
This method is not meant to replace the calibration requirements of 
test methods. In addition to the requirements in this method, all 
the calibration requirements of the applicable test method must also 
be met.
    3.2.1 Prepare the gas dilution system according to the 
manufacturer's instructions. Using the high-level supply gas, 
prepare, at a minimum, two dilutions within the range of each 
dilution device utilized in the dilution system (unless, as in 
critical orifice systems, each dilution device is used to make only 
one dilution; in that case, prepare one dilution for each dilution 
device). Dilution device in this method refers to each mass flow 
controller, critical orifice, capillary tube, positive displacement 
pump, or any other device which is used to achieve gas dilution.
    3.2.2 Calculate the predicted concentration for each of the 
dilutions based on the flow rates through the gas dilution system 
(or the dilution ratios) and the certified concentration of the 
high-level supply gas.
    3.2.3 Introduce each of the dilutions from Section 3.2.1 into 
the analyzer or monitor one at a time and determine the instrument 
response for each of the dilutions.
    3.2.4 Repeat the procedure in Section 3.2.3 two times, i.e., 
until three injections are made at each dilution level. Calculate 
the average instrument response for each triplicate injection at 
each dilution level. No single injection shall differ by more than 
2 percent from the average instrument response for that 
dilution.
    3.2.5 For each level of dilution, calculate the difference 
between the average concentration output recorded by the analyzer 
and the predicted concentration calculated in Section 3.2.2. The 
average concentration output from the analyzer shall be within 
2 percent of the predicted value.
    3.2.6 Introduce the mid-level supply gas directly into the 
analyzer, bypassing the gas dilution system. Repeat the procedure 
twice more, for a total of three mid-level supply gas injections. 
Calculate the average analyzer output concentration for the mid-
level supply gas. The difference between the certified concentration 
of the mid-level supply gas and the average instrument response 
shall be within 2 percent.
    3.3 If the gas dilution system meets the criteria listed in 
Section 3.2, the gas dilution system may be used throughout that 
field test. If the gas dilution system fails any of the criteria 
listed in Section 3.2, and the tester corrects the problem with the 
gas dilution system, the procedure in Section 3.2 must be repeated 
in its entirety and all the criteria in Section 3.2 must be met in 
order for the gas dilution system to be utilized in the test.

4. References

    1. ``EPA Traceability Protocol for Assay and Certification of 
Gaseous Calibration Standards,'' EPA-600/R93/224, Revised September 
1993.

[55 FR 14249, Apr. 17, 1990; 55 FR 24687, June 18, 1990, as amended 
at 55 FR 37606, Sept. 12, 1990; 56 FR 6278, Feb. 15, 1991; 56 FR 
65435, Dec. 17, 1991; 60 FR 28054, May 30, 1995; 62 FR 32502, June 
16, 1997]

Appendixes N-O [Reserved]

Appendix P to Part 51--Minimum Emission Monitoring Requirements

    1.0 Purpose. This appendix P sets forth the minimum requirements 
for continuous emission monitoring and recording that each State 
Implementation Plan must include in order to be approved under the 
provisions of 40 CFR 51.165(b). These requirements include the 
source categories to be affected; emission monitoring, recording, 
and reporting requirements for those sources; performance 
specifications for accuracy, reliability, and durability of 
acceptable monitoring systems; and techniques to convert emission 
data to units of the applicable State emission standard. Such data 
must be reported to the State as an indication of whether proper 
maintenance and operating procedures are being utilized by source 
operators to maintain emission levels at or below emission 
standards. Such data may be used directly or indirectly for 
compliance determination or any other purpose deemed appropriate by 
the State. Though the monitoring requirements are specified in 
detail, States are given some flexibility to resolve difficulties 
that may arise during the implementation of these regulations.
    1.1 Applicability. The State plan shall require the owner or 
operator of an emission source in a category listed in this appendix 
to: (1) Install, calibrate, operate, and maintain all monitoring 
equipment necessary for continuously monitoring the pollutants 
specified in this appendix for the applicable source category; and 
(2) complete the installation and performance tests of such 
equipment and begin monitoring and recording within 18 months of 
plan approval or promulgation. The source categories and the 
respective monitoring requirements are listed below.
    1.1.1 Fossil fuel-fired steam generators, as specified in 
paragraph 2.1 of this appendix,

[[Page 5189]]

shall be monitored for opacity, nitrogen oxides emissions, sulfur 
dioxide emissions, and oxygen or carbon dioxide.
    1.1.2 Fluid bed catalytic cracking unit catalyst regenerators, 
as specified in paragraph 2.4 of this appendix, shall be monitored 
for opacity.
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[FR Doc. 99-55507 Filed 2-2-99; 8:45 am]
BILLING CODE 1505-01-D