Air Plan Partial Approval and Partial Disapproval; Wyoming; Regional Haze Plan for the Second Implementation Period

ENVIRONMENTAL PROTECTION AGENCY <CFR>40 CFR Part 52</CFR> <DEPDOC>[EPA-R08-OAR-2023-0489; FRL-12135-01-R8]</DEPDOC> <SUBJECT>Air Plan Partial Approval and Partial Disapproval; Wyoming; Regional Haze Plan for the Second Implementation Period</SUBJECT> <HD SOURCE="HED">AGENCY:</HD> Environmental Protection Agency (EPA). <HD SOURCE="HED">ACTION:</HD> Proposed rule. <SUM> <HD SOURCE="HED">SUMMARY:</HD> The Environmental Protection Agency (EPA) is proposing to partially approve and partially disapprove the regional haze state implementation plan (SIP) submission submitted by the State of Wyoming on August 10, 2022 (Wyoming's 2022 SIP submission) under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the program's second implementation period. Wyoming's 2022 SIP submission addresses the requirement that states revise their long-term strategies every implementation period to make reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. Wyoming's 2022 SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. The EPA is taking this action pursuant to the CAA. </SUM> <EFFDATE> <HD SOURCE="HED">DATES:</HD> Written comments must be received on or before September 3, 2024. </EFFDATE> <HD SOURCE="HED">ADDRESSES:</HD> Submit your comments, identified by Docket ID No. EPA-R08-OAR-2023-0489, to the Federal Rulemaking Portal: <E T="03">https://www.regulations.gov.</E> Follow the online instructions for submitting comments. Once submitted, comments cannot be edited or removed from <E T="03">https://www.regulations.gov.</E> 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 ( <E T="03">i.e.,</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 <E T="03">https://www2.epa.gov/dockets/commenting-epa-dockets.</E> <E T="03">Docket:</E> All documents in the docket are listed in the <E T="03">https://www.regulations.gov</E> index. Although listed in the index, some information is not publicly available, <E T="03">e.g.,</E> CBI or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, will be publicly available only in hard copy. Publicly available docket materials are available electronically in <E T="03">https://www.regulations.gov.</E> Please email or call the person listed in the <E T="02">FOR FURTHER INFORMATION CONTACT</E> section if you need to make alternative arrangements for access to the docket. <FURINF> <HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD> Jaslyn Dobrahner, Air and Radiation Division, EPA, Region 8, Mailcode 8ARD-IO, 1595 Wynkoop Street, Denver, Colorado, 80202-1129, telephone number: (303) 312-6252; email address: <E T="03">dobrahner.jaslyn@epa.gov.</E> </FURINF> <SUPLINF> <HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD> Throughout this document wherever “we,” “us,” or “our” is used, we mean the EPA. <HD SOURCE="HD1">Table of Contents</HD> <EXTRACT> <FP SOURCE="FP-2">I. What action is the EPA proposing?</FP> <FP SOURCE="FP-2">II. Background and Requirements for Regional Haze Plans</FP> <FP SOURCE="FP1-2">A. Regional Haze</FP> <FP SOURCE="FP1-2">B. Roles of Agencies in Addressing Regional Haze</FP> <FP SOURCE="FP1-2">C. Status of Wyoming's Regional Haze Plan for the First Implementation Period</FP> <FP SOURCE="FP1-2">D. Wyoming's Regional Haze Plan for the Second Implementation Period</FP> <FP SOURCE="FP-2">III. Requirements for Regional Haze Plans for the Second Implementation Period</FP> <FP SOURCE="FP1-2">A. Identification of Class I Areas</FP> <FP SOURCE="FP1-2">B. Calculation of Baseline, Current, and Natural Visibility Conditions; Progress to Date; and Uniform Rate of Progress</FP> <FP SOURCE="FP1-2">C. Long-Term Strategy for Regional Haze</FP> <FP SOURCE="FP1-2">D. Reasonable Progress Goals</FP> <FP SOURCE="FP1-2">E. Monitoring Strategy and Other State Implementation Plan Requirements</FP> <FP SOURCE="FP1-2">F. Requirements for Periodic Reports Describing Progress Towards the Reasonable Progress Goals</FP> <FP SOURCE="FP1-2">G. Requirements for State and Federal Land Manager Coordination</FP> <FP SOURCE="FP-2">IV. The EPA's Evaluation of Wyoming's Regional Haze Plan for the Second Implementation Period</FP> <FP SOURCE="FP1-2">A. Identification of Class I Areas</FP> <FP SOURCE="FP1-2">B. Calculation of Baseline, Current, and Natural Visibility Conditions; Progress to Date; and Uniform Rate of Progress for Class I Areas Within the State</FP> <FP SOURCE="FP1-2">C. Long-Term Strategy</FP> <FP SOURCE="FP1-2">1. Summary of Wyoming's 2022 SIP Submission</FP> <FP SOURCE="FP1-2">a. PacifiCorp—Jim Bridger Power Plant</FP> <FP SOURCE="FP1-2">b. PacifiCorp—Naughton Power Plant</FP> <FP SOURCE="FP1-2">c. Basin Electric—Laramie River Station Power Plant</FP> <FP SOURCE="FP1-2">d. PacifiCorp—Dave Johnston Power Plant</FP> <FP SOURCE="FP1-2">e. Genesis Alkali—Westvaco</FP> <FP SOURCE="FP1-2">f. Mountain Cement Company—Laramie Portland Cement</FP> <FP SOURCE="FP1-2">g. PacifiCorp—Wyodak Power Plant</FP> <FP SOURCE="FP1-2">h. TATA Chemicals—Green River Works</FP> <FP SOURCE="FP1-2">i. Contango Resources, Inc.—Elk Basin Gas Plant</FP> <FP SOURCE="FP1-2">j. Genesis Alkali—Granger Soda Ash Facility</FP> <FP SOURCE="FP1-2">k. Burlington Resources—Lost Cabin Gas Plant</FP> <FP SOURCE="FP1-2">l. Dyno Nobel Inc.—Cheyenne Fertilizer Facility</FP> <FP SOURCE="FP1-2">m. Summary of Wyoming's Reasons for Concluding That No Additional Emission Reduction Measures Are Necessary To Make Reasonable Progress</FP> <FP SOURCE="FP1-2">2. The EPA's Evaluation</FP> <FP SOURCE="FP1-2">a. Failure To Perform a Four-Factor Analysis To Analyze Control Measures for Selected Sources To Determine What Is Necessary To Make Reasonable Progress</FP> <FP SOURCE="FP1-2">i. Reliance on Existing Controls Without Adequate Technical Documentation To Avoid Four-Factor Analysis of Sources That May Affect Visibility at Class I Areas</FP> <FP SOURCE="FP1-2">ii. Reliance on Unenforceable Source Retirements To Avoid Four-Factor Analysis</FP> <FP SOURCE="FP1-2">iii. Other Improper Rationales for Not Performing Four-Factor Analyses</FP> <FP SOURCE="FP1-2">b. Failure To Document the Technical Basis of the State's Determination of the Emission Reduction Measures Necessary To Make Reasonable Progress</FP> <FP SOURCE="FP1-2">i. Laramie Portland Cement</FP> <FP SOURCE="FP1-2">ii. Lost Cabin Gas Plant</FP> <FP SOURCE="FP1-2">iii. Elk Basin Gas Plant, Dave Johnston Unit 4, and Green River Works</FP> <FP SOURCE="FP1-2">c. Sources Where the State Unreasonably Rejected Potential Emission Reduction Measures</FP> <FP SOURCE="FP1-2">d. Other Unjustified Reasons for Rejecting All Additional Emission Reduction Measures</FP> <FP SOURCE="FP1-2">e. Other Long-Term Strategy Requirements (40 CFR 51.308(f)(2)(ii)-(iv))</FP> <FP SOURCE="FP1-2">D. Reasonable Progress Goals</FP> <FP SOURCE="FP1-2">E. Reasonably Attributable Visibility Impairment (RAVI)</FP> <FP SOURCE="FP1-2">F. Monitoring Strategy and Other State Implementation Plan Requirements</FP> <FP SOURCE="FP1-2">G. Requirements for Periodic Reports Describing Progress Towards the Reasonable Progress Goals</FP> <FP SOURCE="FP1-2">H. Requirements for State and Federal Land Manager Coordination</FP> <FP SOURCE="FP-2">V. Proposed Action</FP> <FP SOURCE="FP-2">VI. Environmental Justice</FP> <FP SOURCE="FP-2">VII. Statutory and Executive Order Reviews</FP> </EXTRACT> <HD SOURCE="HD1">I. What action is the EPA proposing?</HD> The EPA is proposing to partially approve and partially disapprove a SIP submission submitted by the State of Wyoming to the EPA on August 10, 2022, addressing the requirements of the second implementation period of the RHR. Specifically, the EPA is proposing approval for the portions of Wyoming's 2022 SIP submission relating to 40 CFR 51.308(f)(1): calculations of baseline, current, and natural visibility conditions, progress to date, and the uniform rate of progress; 40 CFR 51.308(f)(4): reasonably attributable visibility impairment; 40 CFR 51.308(f)(5) and 40 CFR 51.308(g): progress report requirements; and 40 CFR 51.308(f)(6): monitoring strategy and other implementation plan requirements. For the reasons described in this document, the EPA is proposing disapproval for the remainder of Wyoming's 2022 SIP submission, which addresses 40 CFR 51.308(f)(2): long-term strategy; 40 CFR 51.308(f)(3): reasonable progress goals; and 40 CFR 51.308(i): FLM consultation. Consistent with section 110(k)(3) of the CAA, the EPA may partially approve portions of a submittal if those elements meet all applicable requirements and may disapprove the remainder so long as the elements are fully separable. <SU>1</SU> <FTREF/> <FTNT> <SU>1</SU>   <E T="03">See</E> CAA section 110(k)(3) and July 1992 EPA memorandum titled “Processing of State Implementation Plan (SIP) Submittals” from John Calcagni, at <E T="03">https://www.epa.gov/sites/default/files/2015-07/documents/procsip.pdf.</E> </FTNT> <HD SOURCE="HD1">II. Background and Re ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Preview showing 10k of 286k characters. Full document text is stored and available for version comparison. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━