[Federal Register Volume 80, Number 176 (Friday, September 11, 2015)]
[Rules and Regulations]
[Pages 54728-54729]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-22945]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 63

[EPA-HQ-OAR-2011-0817; FRL-9933-76-OAR]
RIN 2060-AQ93


National Emission Standards for Hazardous Air Pollutants for the 
Portland Cement Manufacturing Industry and Standards of Performance for 
Portland Cement Plants; Correction

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule; correcting amendments.

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SUMMARY: The Environmental Protection Agency (EPA) published a final 
rule in the Federal Register on July 27, 2015, titled National Emission 
Standards for Hazardous Air Pollutants for the Portland Cement 
Manufacturing Industry and Standards of Performance for Portland Cement 
Plants. This final rule makes technical corrections and clarifications 
to the regulations published in that final rule. The rule also includes 
a provision describing performance testing requirements when a source 
demonstrates compliance with the hydrochloric acid (HCl) emissions 
standard using a continuous emissions monitoring system (CEMS) for 
sulfur dioxide measurement and reporting.

DATES: Effective September 9, 2015.

FOR FURTHER INFORMATION CONTACT: Ms. Sharon Nizich, Sector Policies and 
Programs Division (D243-04), Office of Air Quality Planning and 
Standards, U.S. Environmental Protection Agency, Research Triangle 
Park, North Carolina 27711, telephone number: (919) 541-2825; facsimile 
number: (919) 541-5450; email address: [email protected]. For 
information about the applicability of the national emission standards 
for hazardous air pollutants or new source performance standards, 
contact Mr. Patrick Yellin, Monitoring, Assistance and Media Programs 
Division (2227A), Office of Enforcement and Compliance Assurance, U.S. 
Environmental Protection Agency, 1200 Pennsylvania Avenue, Washington, 
DC 20460; telephone number (202) 564-2970; email address 
[email protected].

SUPPLEMENTARY INFORMATION: 

Summary of Technical Corrections

    The EPA received communications from representatives of the 
Portland cement industry on five occasions in August 2015 (see memo to 
the docket (EPA-HQ-OAR-2011-0817) titled, ``Communications on Errors 
PCA August 2015''). These communications outlined several errors in the 
regulatory text of the final rule (80 FR 44772). These all pertain to 
monitoring requirements. The EPA agrees that these are errors 
(typographical and unintended phrasing or omissions), and is correcting 
these errors in this document. We are also removing two passages (which 
consisted of four sentences) that were inadvertently left in the final 
amendments, but were discussed by the EPA as being removed in the 
Response to Comment (RTC) document for the final amendments (see docket 
item EPA-HQ-OAR-2011-0817-0870, page 8). In the RTC, we discussed that 
data substitution is not an allowed practice when determining 
compliance, but these four sentences discuss procedures for data 
substitution. Leaving these sentences in the rule, thus, does not 
reflect the EPA's stated intention, and would lead to confusion given 
the direct conflict between the RTC document and the rule text.
    We are making one further technical correction involving timing of 
performance tests. The correction keeps in place the specified time by 
which performance tests must be conducted, but will no longer set out a 
window of time in which the test must be conducted. The net effect is 
that performance tests can be conducted earlier than the window of time 
in the current rule text if a source desires to conduct its performance 
test earlier. The EPA had already indicated in the RTC document that it 
was making this change (see docket item EPA-HQ-OAR-2011-0817-0870, page 
5). The EPA regards this amendment as a clarification (the current rule 
could be interpreted to allow earlier testing) so that the rule reads 
precisely as intended, as stated by the EPA in the RTC document.

List of Subjects in 40 CFR Part 63

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Hazardous substances, Intergovernmental 
relations, Reporting and recordkeeping requirements.

    For the reasons set out in the preamble, title 40, chapter I of the 
Code of Federal Regulations is amended as follows:

PART 63--NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS 
FOR SOURCE CATEGORIES

0
1. The authority citation for part 63 continues to read as follows:


[[Page 54729]]


    Authority:  42 U.S.C. 7401, et seq.


0
2. Amend Sec.  63.1349 by:
0
a. In paragraph (b)(4)(i), removing ``ppmvd'' and adding in its place 
``ppmvw''.
0
b. In paragraph (b)(7)(v), revising the second sentence.
0
c. In paragraph (c), revising the second sentence.
    The revisions read as follows:


Sec.  63.1349  Performance testing requirements.

* * * * *
    (b) * * *
    (7) * * *
    (v)* * * You are required to measure oHAP at the coal mill inlet or 
outlet and you must also measure oHAP at the alkali bypass outlet. * * 
*
* * * * *
    (c) * * * Performance tests required every 30 months must be 
completed no more than 31 calendar months after the previous 
performance test except where that specific pollutant is monitored 
using CEMS; performance tests required every 12 months must be 
completed no more than 13 calendar months after the previous 
performance test.
* * * * *

0
3. Amend Sec.  63.1350 by:
0
a. In paragraph (k)(2)(ii), revising the last sentence.
0
b. Revising paragraph (k)(2)(iii).
0
c. In paragraph (l)(1) introductory text, revising the last sentence.
0
d. In paragraph (l)(1)(ii)(B), revising the last sentence.
0
e. In paragraph (l)(1)(ii)(C), removing the last two sentences.
    The revisions read as follows:


Sec.  63.1350  Monitoring requirements.

* * * * *
    (k) * * *
    (2) * * *
    (ii) * * * In this manner all hourly average values exceeding the 
span value measured by the Hg CEMS during the week following the above 
span linearity challenge when the CEMS response exceeds +/-20 percent 
of the certified value of the reference gas must be normalized using 
Equation 22.
    (iii) Quality assure any data above the span value established in 
paragraph (k)(1) of this section using the following procedure. Any 
time two consecutive one-hour average measured concentrations of Hg 
exceeds the span value you must, within 24 hours before or after, 
introduce a higher, ``above span'' Hg reference gas standard to the Hg 
CEMS. The ``above span'' reference gas must meet the requirements of PS 
12A, Section 7.1, must target a concentration level between 50 and 150 
percent of the highest expected hourly concentration measured during 
the period of measurements above span, and must be introduced at the 
probe. While this target represents a desired concentration range that 
is not always achievable in practice, it is expected that the intent to 
meet this range is demonstrated by the value of the reference gas. 
Expected values may include ``above span'' calibrations done before or 
after the above span measurement period. Record and report the results 
of this procedure as you would for a daily calibration. The ``above 
span'' calibration is successful if the value measured by the Hg CEMS 
is within 20 percent of the certified value of the reference gas. If 
the value measured by the Hg CEMS exceeds 20 percent of the certified 
value of the reference gas, then you must normalize the one-hour 
average stack gas values measured above the span during the 24-hour 
period preceding or following the ``above span'' calibration for 
reporting based on the Hg CEMS response to the reference gas as shown 
in equation 22 below. Only one ``above span'' calibration is needed per 
24 hour period.
[GRAPHIC] [TIFF OMITTED] TR11SE15.008

* * * * *
    (l) * * *
    (1) * * * The span value and calibration requirements in paragraphs 
(l)(1)(i) and (ii) of this section apply to HCl CEMS other than those 
installed and certified under PS 15.
* * * * *
    (ii) * * *
    (B) * * * Any HCl CEMS above span linearity challenge response 
exceeding +/-20 percent of the certified value of the reference gas 
requires that all above span hourly averages during the week following 
the above span linearity challenge must be normalized using Equation 
23.
* * * * *

    Dated: September 2, 2015.
Janet G. McCabe,
Acting Assistant Administrator, Office of Air and Radiation.
[FR Doc. 2015-22945 Filed 9-9-15; 4:15 pm]
BILLING CODE 6560-50-P