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Federal Register / Vol. 86, No. 47 / Friday, March 12, 2021 / Rules and Regulations III. Have the requirements for approval of a SIP revision been met?
IV. What action is the EPA taking?
V. Impacts on the Boutique Fuels List VI. Incorporation by Reference VII. Statutory and Executive Order Reviews
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52
EPAR07OAR20200695; FRL10021
11Region 7

Air Plan Approval; Missouri; Missouri Reid Vapor Pressure Requirement Environmental Protection Agency EPA.
ACTION: Final rule.
AGENCY:

The Environmental Protection Agency EPA is taking final action to approve a revision to the State Implementation Plan SIP for the State of Missouri. This final action will amend the SIP to remove the Kansas City, Missouri low Reid Vapor Pressure RVP fuel requirement which required gasoline sold in the Kansas City, Missouri area to have a seven pounds per square inch Reid Vapor Pressure from June 1 to September 15. The majority of the state is subject to the Clean Air Act CAA nine pounds per square inch Reid Vapor Pressure fuel requirement from June 1 to September 15. In addition, the EPA has issued a separate proposal for the Kansas side of the Kansas City metropolitan area.
DATES: This final rule is effective on April 12, 2021.
ADDRESSES: The EPA has established a docket for this action under Docket ID
No. EPAR07OAR20200695. All documents in the docket are listed on the https www.regulations.gov website. Although listed in the index, some information is not publicly available, i.e., CBI or other information whose disclosure is restricted by statute.
Certain other material, such as copyrighted material, is not placed on the internet and will be publicly available only in hard copy form.
Publicly available docket materials are available through https
www.regulations.gov or please contact the person identified in the FOR FURTHER
INFORMATION CONTACT section for additional information.
FOR FURTHER INFORMATION CONTACT: Jed D. Wolkins, Environmental Protection Agency, Region 7 Office, Air Quality Planning Branch, 11201 Renner Boulevard, Lenexa, Kansas 66219;
telephone number: 913 5517588;
email address: wolkins.jed@epa.gov.
SUPPLEMENTARY INFORMATION:
Throughout this document we, us, and our refer to the EPA.
SUMMARY:

Table of Contents I. What is being addressed in this document?
II. Background
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I. What is being addressed in this document?
The EPA is approving a revision to the Missouri SIP, submitted by the Missouri Department of Natural Resources MoDNR on September 15, 2020. The revision removes the seven pounds per square inch psi Reid Vapor Pressure RVP fuel requirement for the Kansas City, Missouri, area; consisting of Clay, Jackson, and Platte Counties.
The former SIP-approved rule, 10 CSR
102.330, required gasoline sold in the three counties to have a RVP of seven psi or less from June 1 through September 15. After the effective date of this final action, the Kansas City, Missouri area will only be subject to the CAA RVP fuel requirement of nine psi or less from June 1 through September 15.
II. Background The EPA established a 1-hour ozone national ambient air quality standard NAAQS in 1971.1 See 36 FR 8186
April 30, 1971. On March 3, 1978, the EPA designated Clay, Platte and Jackson Counties hereinafter referred to in this document as the Kansas City area in nonattainment of the 1971 1-hour ozone NAAQS, as required by the CAA
Amendments of 1977. See 43 FR 8962
March 3, 1978. On February 8, 1979, the EPA revised the 1-hour ozone NAAQS, referred to as the 1979 ozone NAAQS. See 44 FR 8202 February 8, 1979.
The EPA redesignated the Kansas City area to attainment of the 1979 1-hour ozone standard and approved Missouris ozone maintenance plan for the Kansas City area on July 23, 1992. See 57 FR
27939 June 23, 1992. Pursuant to section 175A of the CAA, the first 10year maintenance period for the 1-hour ozone standard began on July 23, 1992, the effective date of the redesignation approval.
In 1995, the Kansas City area violated the 1979 1-hour ozone standard.
Missouri revised the control strategy and contingency measures in the 1 The 1-hour ozone NAAQS was originally promulgated as a photochemical oxidant standard.
See 36 FR 8186 April 30, 1971. In 1979, the EPA
substituted the word ozone for photochemical oxidant. See 44 FR 8202 February 8, 1979. In doing so, the EPA stated that the intent of the standard total-oxidant reduction, the control strategies, and the index of Progress toward attainment measured ozone levels remain unchanged. Id. at 8203.

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maintenance plan, which was approved on June 24, 2002. See 67 FR 20036
April 24, 2002. The revised control strategy included 10 CSR 102.330, Control of Gasoline Reid Vapor Pressure.
On January 1, 1997, Missouri adopted the seven and two tenths 7.2 psi RVP
limit from June 1 to September 15.2 The EPA approved this rule into the SIP on April 24, 1998.3 On April 3, 2001, Missouri revised the rule to seven 7.0
psi RVP limit from June 1 to September 15.4 The EPA approved this rule into the SIP on February 13, 2002.5
On July 18, 1997, the EPA established a new 8-hour ozone NAAQS hereafter the 1997 8-hour ozone NAAQS. See 62
FR 38856 July 18, 1997. This newly established 8-hour ozone NAAQS
replaced the prior 1-hour ozone NAAQS.
On April 30, 2004, the EPA published a final rule in the Federal Register stating the 1979 1-hour ozone NAAQS
would no longer apply i.e., would be revoked for an area one year after the effective date of the areas designation for the 1997 8-hour ozone NAAQS. See 69 FR 23951 April 30, 2004. The Kansas City Area was designated as an unclassifiable area for the 1997 8-hour ozone NAAQS, effective June 15, 2004.
See id. However, on May 3, 2005, the EPA published a final rule designating the Kansas City area as an attainment area for the 1997 8-hour ozone NAAQS
based on new monitoring data. See 70
FR 22801 May 3, 2005. The effective date of the revocation of the 1979 1-hour ozone standard for the Kansas City area was June 15, 2005. See 70 FR 44470
August 3, 2005. Missouri achieved the required maintenance of the 1979 1hour ozone standard in 2014.
On September 15, 2020, Missouri requested that the EPA remove 10 CSR
102.330 from the SIP. Section 110l of the CAA prohibits the EPA from approving a SIP revision that interferes with any applicable requirement concerning attainment and reasonable further progress RFP, or any other applicable requirement of the CAA. As detailed in the proposal, Missouri adequately demonstrated that removal of this rule will not affect the areas ability to attain or maintain any air quality standards.
2 The Missouri rule allowed an additional one psi for gasoline containing 9 to 10% ethanol.
3 See 63 FR 20318.
4 The Missouri rule allows an additional one psi for gasoline containing 9 to 10% ethanol.
5 See 67 FR 6658.

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