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  Air Plan Approval and Disapproval; North Carolina: New Source Review for Fine Particulate Matter (PM2.5
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  Approval and Promulgation of Air Quality Implementation Plans; Interstate Transport for Utah

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  Approval and Promulgation of Implementation Plans; Louisiana; Permitting of Greenhouse Gases

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  Determinations of Attainment by the Attainment Date, Extensions of the Attainment Date, and Reclassification of Several Areas for the 2008 Ozone National Ambient Air Quality Standards

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  Determination of Attainment; Atlanta, Georgia; 2008 Ozone National Ambient Air Quality Standards

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  Approval and Promulgation of Air Quality Implementation Plans; Maryland; Reasonable Further Progress Plan, Contingency Measures, Motor Vehicle Emissions Budgets for the Baltimore 1997 8-Hour Ozone Serious Nonattainment Area
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  Approval and Promulgation of Air Quality Implementation Plans; Maryland; State Board Requirements
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  Approval and Promulgation of Implementation Plans; Texas; Revisions to the General Definitions for Texas New Source Review and the Minor NSR Qualified Facilities Program

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  Air Plan Approval; Removal of I/M Program in Memphis and Revisions to the 1997 8-Hour Ozone Maintenance Plan for Shelby County, Tennessee

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  Approval and Promulgation of Air Quality Implementation Plans; Pennsylvania; 2011 Base Year Inventories for the 2008 8-Hour Ozone National Ambient Air Quality Standard for the Allentown-Bethlehem-Easton, Lancaster, Pittsburgh-Beaver Valley, and Reading Areas, and the Pennsylvania Portion of the Philadelphia-Wilmington-Atlantic City Area
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  Promulgation of State Implementation Plan Revisions; Infrastructure Requirements for the 2008 Lead, 2008 Ozone, 2010 NO2,

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  Approval and Promulgation of Implementation Plans; AR; Redesignation of the Crittenden County, 2008 8-Hour Ozone Nonattainment Area to Attainment
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  Approval of California Air Plan Revisions, San Joaquin Valley Unified Air Pollution Control District

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  Approval and Promulgation of Implementation Plans; State of Louisiana; Revisions to the State Implementation Plan; Fee Regulations

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  Air Plan Approval; Rhode Island; Infrastructure State Implementation Plan Requirements for Particle Matter, Ozone, Lead, Nitrogen Dioxide and Sulfur Dioxide
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  Air Plan Approval; Vermont; Stage I Vapor Recovery Requirements
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  Approval and Promulgation of Air Quality Implementation Plans; New York; Update to Materials Incorporated by Reference
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  Approval and Promulgation of Implementation Plans; Louisiana; Revisions to the New Source Review State Implementation Plan; Air Permit Procedure Revisions
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  Promulgation of State Implementation Plan Revisions; Infrastructure Requirements for the 2008 Lead, 2008 Ozone, 2010 NO2

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  Air Plan Approval and Air Quality Designation; TN; Redesignation of the Shelby County 2008 8-Hour Ozone Nonattainment Area to Attainment

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  Limited Approval, Limited Disapproval of California 9+Air Plan Revisions, Eastern Kern Air Pollution Control District

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  Approval and Promulgation of Implementation Plans; Texas; Control of Air Pollution From Nitrogen Compounds State Implementation Plan
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  Finding of Attainment and Approval of Attainment Plan for Klamath Falls, Oregon Fine Particulate Matter Nonattainment Area

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  Approval and Promulgation of Air Quality Implementation Plans; Colorado; Revisions to Common Provisions and Regulation Number 3; Corrections
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  Approval and Promulgation of Implementation Plans; Spokane, Washington: Second 10-Year PM10

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  Approval and Promulgation of Air Quality Implementation Plans; Texas; Interstate Transport of Air Pollution for the 2008 Ozone National Ambient Air Quality Standards

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  Air Plan Approval and Designation of Areas; MS; Redesignation of the DeSoto County, 2008 8-Hour Ozone Nonattainment Area to Attainment
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  Air Plan Approval; North Carolina; Prong 4-2008 Ozone, 2010 NO2,

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  Air Plan Approval; South Carolina; Transportation Conformity Update
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  Air Quality Control, Reporting, and Compliance
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  Clean Air Plans; 1-Hour and 1997 8-Hour Ozone Nonattainment Area Requirements; San Joaquin Valley, California

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  Approval and Promulgation of Implementation Plans; Kentucky; Infrastructure Requirements for the 2010 Sulfur Dioxide National Ambient Air Quality Standard
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  Promulgation of Implementation Plans; Arkansas; Regional Haze and Interstate Visibility Transport Federal Implementation Plan; Reopening of Comment Period and Notice of Availability

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  Partial Approval and Partial Disapproval of Air Quality State Implementation Plans; California; Infrastructure Requirements for Ozone, Fine Particulate Matter (PM2.5

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  Approval and Promulgation of Air Quality Implementation Plans; Washington; Update to Materials Incorporated by Reference

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  Approval of California Air Plan Revisions, San Joaquin Valley Unified Air Pollution Control District and South Coast Air Quality Management District

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  Air Plan Disapprovals; MS; Prong 4-2008 Ozone, 2010 NO2,
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  Partial Approval and Partial Disapproval of Air Quality State Implementation Plans; Arizona; Infrastructure Requirements To Address Interstate Transport for the 2008 Ozone NAAQS

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  Indiana; Ohio; Wisconsin; Disapproval of Interstate Transport Requirements for the 2008 Ozone NAAQS

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  Rulemaking To Affirm Interim Amendments to Dates in Federal Implementation Plans Addressing Interstate Transport of Ozone and Fine Particulate Matter

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  Air Quality Plans; Tennessee; Infrastructure Requirements for the 2010 Sulfur Dioxide National Ambient Air Quality Standard
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  Approval and Promulgation of Air Quality Implementation Plans; New Mexico; and Albuquerque/Bernalillo County; Revisions To Establish Small Business Stationary Source Technical and Environmental Compliance Assistance Programs
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  Revisions to the California State Implementation Plan; South Coast Air Quality Management District; Control of Oxides of Nitrogen Emissions From Off-Road Diesel Vehicles

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  Air Plan Approval; Illinois; Base Year Emission Inventories for the 20088-Hour Ozone Standard
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  Air Plan Approval; Wisconsin; Base Year Emission Inventories for the 2008 8-Hour Ozone Standard
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  Approval and Promulgation of Implementation Plans; South Carolina; Infrastructure Requirements for the 2010 Sulfur Dioxide National Ambient Air Quality Standard
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  Designation of Areas for Air Quality Planning Purposes; Redesignation Request and Associated Maintenance Plan for Billings, MT 2010 SO2

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  Approval and Promulgation of Implementation Plans; Alaska: Updates to Incorporation by Reference and Miscellaneous Revisions

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  Approval and Promulgation of Air Quality Implementation Plans; Wyoming; Revisions to Wyoming Air Quality Standards and Regulations; Chapter 6, Permitting Requirements, Section 13, Nonattainment New Source Review Permit Requirements, and Section 14, Incorporation by Reference

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  Approval and Promulgation of Air Quality Implementation Plans; Virginia; Prevention of Significant Deterioration; Fine Particulate Matter