August 1,2013

PROPOSED RULES

Approval and Promulgation of Implementation Plans; Idaho: State Board Requirements [FR DOC# 2013-18538]
SUMMARY: The EPA is proposing to approve the State Implementation Plan (SIP) revision submitted by the State of
Idaho for parallel processing on July 16, 2013, for purposes of meeting the state board requirements of the Clean Air Act
(CAA). The EPA is also proposing to approve the submittal as meeting the corresponding state board infrastructure
requirements of the CAA for the 1997 ozone National Ambient Air Quality Standards (NAAQS). If the final SIP revision
submitted by the State to the EPA is consistent with the July 16, 2013, submittal, the State’s SIP will, upon final
approval, contain the required provisions regarding board composition and disclosure of potential conflicts of interest.

Approval and Promulgation of Air Quality Implementation Plans; State of Colorado; Second Ten-Year Carbon Monoxide
Maintenance Plan for Colorado Springs [FR DOC# 2013-18436] SUMMARY: EPA is proposing to approve a State
Implementation Plan (SIP) revision submitted by the State of Colorado. On March 31, 2010, the Governor of Colorado’s
designee submitted to EPA a Clean Air Act (CAA) section 175A(b) second 10-year maintenance plan for the Colorado
Springs area for the carbon monoxide (CO) National Ambient Air Quality Standard (NAAQS). This limited maintenance
plan (LMP) addresses maintenance of the CO NAAQS for a second 10-year period beyond the original redesignation.
This action is being taken under sections 110 and 175A of the CAA.

Approval and Promulgation of Air Quality Implementation Plans; Massachusetts; Regulations Limiting Emissions of
Volatile Organic Compounds and Nitrogen Oxides [FR DOC# 2013-18532] SUMMARY: The EPA is proposing to approve
State Implementation Plan (SIP) revisions submitted by the Commonwealth of Massachusetts. These are revisions to
existing air pollution control requirements for stationary sources of volatile organic compounds (VOCs) and nitrogen
oxides (NO<INF>X</INF>). This action is being taken under the Clean Air Act.

 
RULES

Approval and Promulgation of Implementation Plans, State of California, San Joaquin Valley Unified Air Pollution Control
District, New Source Review [FR DOC# 2013-18413] SUMMARY: EPA is taking final action to correct the May 2004
approval of a version of the New Source Review (NSR) rules for the San Joaquin Valley Unified Air Pollution Control
District portion of the California State Implementation Plan, consistent with the relevant provisions of state law.
Specifically, EPA is taking final action to correct the May 2004 approval by limiting the approval, as it relates to
agricultural sources, to apply the permitting requirements only to such sources with potential emissions at or above a
major source applicability threshold and to such sources with actual emissions at or above 50 percent of a major source
applicability threshold and to apply the emission offset requirement only to major agricultural sources and major
modifications of such sources.

Approval and Promulgation of Implementation Plans; Oregon: Infrastructure Requirements for the 1997 and 2006 Fine
Particulate Matter and 2008 Ozone National Ambient Air Quality Standards [FR DOC# 2013-18314] SUMMARY: The
EPA is approving the State Implementation Plan (SIP) submittals from the State of Oregon to demonstrate that the SIP
meets the infrastructure requirements of the Clean Air Act (CAA) for the National Ambient Air Quality Standards
(NAAQS) promulgated for fine particulate matter (PM<INF>2.5</INF>) on July 18, 1997, and October 17, 2006, and for
ozone on March 12, 2008. The EPA is finding that the Federally-approved provisions currently in the Oregon SIP meet
the CAA infrastructure requirements for the 1997 PM<INF>2.5</INF>, 2006 PM<INF>2.5</INF>, and the 2008 ozone
NAAQS. The EPA is also finding that the Federally-approved provisions currently in the Oregon SIP meet the interstate
transport requirements of the CAA related to prevention of significant deterioration for the 2008 ozone NAAQS, and
related to visibility for the 2006 PM<INF>2.5</INF> and 2008 ozone NAAQS. This action does not approve any
additional provisions into the Oregon SIP but is a finding that the current provisions of the Oregon SIP are adequate to
satisfy the above-mentioned infrastructure elements required by the CAA.

Approval and Promulgation of Air Quality Implementation Plans; Wisconsin; Permit Exemption Rule [FR DOC# 2013-
18417] SUMMARY: EPA is approving revisions to the Wisconsin State Implementation Plan (SIP) submitted by the
Wisconsin Department of Natural Resources (WDNR) on April 23, 2008. WDNR submitted revisions exempting certain
sources of air pollution from construction permit requirements. EPA is approving these revisions because they are
consistent with Federal regulations governing state permit programs.

Approval and Promulgation of Air Quality Implementation Plans; State of Colorado; Second 10-Year Carbon Monoxide
Maintenance Plan for Colorado Springs [FR DOC# 2013-18438] SUMMARY: EPA is taking direct final action approving a
State Implementation Plan (SIP) revision submitted by the State of Colorado. On March 31, 2010, the Governor of
Colorado’s designee submitted to EPA a Clean Air Act (CAA) section 175A(b) second 10-year maintenance plan for the
Colorado Springs area for the carbon monoxide (CO) National Ambient Air Quality Standard (NAAQS). This limited
maintenance plan (LMP) addresses maintenance of the CO NAAQS for a second 10-year period beyond the original
redesignation. This action is being taken under sections 110 and 175A of the CAA.

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