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Federal Register / Vol. 86, No. 97 / Friday, May 21, 2021 / Proposed Rules
posted without change to https
www.regulations.gov/, including any personal information provided. For detailed instructions on sending comments and additional information on the rulemaking process, see the Written Comments heading of the SUPPLEMENTARY INFORMATION section of this document.
FOR FURTHER INFORMATION CONTACT:
Larry Gonzalez, Environmental Protection Agency, Region 7 Office, Air Permitting Standards Branch, 11201
Renner Boulevard, Lenexa, Kansas 66219; telephone number 913 551
7041; email address gonzalez.larry@
epa.gov.
SUPPLEMENTARY INFORMATION:
Throughout this document we, us, and our refer to the EPA.

Table of Contents
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I. Written Comments II. What is being addressed in this document?
III. Background IV. What is the EPAs analysis of Missouris SIP revision request?
V. Have the requirements for approval of a SIP revision been met?
VI. What action is the EPA taking?
VII. Incorporation by Reference VIII. Statutory and Executive Order Reviews
I. Written Comments Submit your comments, identified by Docket ID No. EPAR07OAR2021
0334, at https www.regulations.gov.
Once submitted, comments cannot be edited or removed from Regulations.gov.
The EPA may publish any comment received to its public docket. Do not submit electronically any information you consider to be Confidential Business Information CBI or other information whose disclosure is restricted by statute. Multimedia submissions audio, video, etc. must be accompanied by a written comment.
The written comment is considered the official comment and should include discussion of all points you wish to make. The EPA will generally not consider comments or comment contents located outside of the primary submission i.e., on the web, cloud, or other file sharing system. For additional submission methods, the full EPA public comment policy, information about CBI or multimedia submissions, and general guidance on making effective comments, please visit https www.epa.gov/dockets/
commenting-epa-dockets.
II. What is being addressed in this document?
The EPA is proposing to approve revisions to the Missouri SIP received on November 10, 2020. The revisions
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are to Title 10, Division 10 of the Code of State Regulations, 10 CSR 105.442
Control of Emissions From Lithographic and Letterpress Printing Operations, which establishes emission limits for volatile organic compounds VOCs from lithographic and letterpress printing operations in St.
Louis City and Jefferson, Franklin St.
Louis, and St. Charles Counties hereinafter referred to in this document as the St. Louis Area. 10 CSR
105.442 is SIP approved in the Code of Federal Regulations at 40 CFR
52.1320c.
These revisions, as discussed in section IV of this document, are largely administrative in nature and do not have a negative impact on air quality.
The EPAs full analysis of the revisions is described in the technical support document TSD included in the docket for this action.
Missouri received five comments four from the EPA during the comment period. Missouri responded to all five comments, as noted in the State submission included in the docket for this action.
The EPA is proposing to approve the revisions to this rule because it meets the requirements of the Clean Air Act and will not have a negative impact on air quality.
III. Background The EPA approved 10 CSR 105.442
Control of Emissions From Lithographic and Letterpress Printing Operations, into the Missouri SIP as a reasonably available control technology RACT rule for the St. Louis area on January 23, 2012 January 23, 2012, 77
FR 3144. 10 CSR 105.442 is SIP
approved in the Code of Federal Regulations at 40 CFR 52.1320c.
Amendments to this state rule that became effective August 30, 2011, addressed an updated Control Techniques Guideline issued by the EPA in September 2006 for Offset Lithographic Printing and Letterpress Printing. These amendments provided more stringent RACT control levels and represent RACT under the 8-hour ozone National Ambient Air Quality Standards NAAQS in effect at the time of approval into the SIP by the EPA in January 2012.
IV. What is the EPAs analysis of Missouris SIP revision request?
In 2019, Missouri revised 10 CSR
105.442 to include a date in the applicability section. As a result of the EPAs comment on the states proposed rule revisions, Missouri revised the applicability date of this rule to apply to sources existing at the time when the
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most recent amendments to the rule, as approved into the SIP, became effective.
Specifically, Missouri revised subsection 1A to specify the applicability date of the rule for installations existing on August 30, 2011, in accordance with section 172c1 of the CAA.1
Additionally, the revisions to the rule text submitted by Missouri on November 10, 2020, do not alter the control requirements for installations already subject to the rule. Furthermore, any new sources or major modifications of existing sources are subject to new source review NSR permitting. Under NSR, a new major source or major modification of an existing source with a PTE of 250 tons per year tpy 2 or more of any National Ambient Air Quality Standard NAAQS pollutant is required to obtain a Prevention of Significant Deterioration PSD permit when the area is in attainment or unclassifiable, which requires an analysis of Best Available Control Technology BACT in addition to an air quality analysis and an additional impacts analysis. Sources with a PTE
greater than 100 tpy, but less than 250
tpy,3 are required to obtain a minor permit in accordance with Missouris NSR permitting program, which is approved into the SIP.4 Further, a new major source or major modification of an existing source with a PTE of 100 tpy or more of any NAAQS pollutant is required to obtain a nonattainment NA
NSR permit when the area is in nonattainment, which requires an analysis of Lowest Achievable Emission Rate LAER in addition to an air quality analysis, an additional impacts analysis and emission offsets. Other revisions to the rule are administrative in nature.
See the TSD included in the docket for this action for the EPAs full analysis of the rule revisions submitted by Missouri on November 10, 2020.
V. Have the requirements for approval of a SIP revision been met?
The State submission has met the public notice requirements for SIP
submissions in accordance with 40 CFR
1 The EPA agrees with Missouris interpretation of CAA section 172c1 in regard to whether RACT
is required for existing sources, but also notes that the State regulation establishing RACT may apply to new sources as well, dependent upon the State regulations language.
2 The PSD major source threshold for certain sources is 100 tpy rather than 250 tpy see 40 CFR
52.21b1ia and 10 CSR 106.0608A.
3 Except for those sources with a PSD major source threshold of 100 tpy.
4 EPAs latest approval of Missouris NSR
permitting program rule was published in the Federal Register on October 11, 2016 81 FR
70025.

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