﻿Docket Index Table of Contents
A.U.S. EPA Rulemaking, Guidance Documents, Informational Memos, Technical Support Documents, Memos to File, and Data Analysis Documents1
B.State Plans and Correspondence6
C.Additional Documents for Proposed Rulemaking7
D.Notice of Proposed Rulemaking7
E.Public Comments and Related Documents7
F.Additional Documents for Final Rulemaking7
G.Notice of Final Rulemaking7


   U.S. EPA Rulemaking, Guidance Documents, Informational Memos, Technical Support Documents, Memos to File, and Data Analysis Documents
Rulemaking

   Part 50  -  National Primary and Secondary Ambient Air Quality Standards, Revisions to the National Ambient Air Quality Standards for Photochemical Oxidants; Final rule. 44 Federal Register (FR) 8202 (February 8, 1979).
   Approval and Promulgation of Air Quality Implementation Plans; California State Implementation Plan Revision; Six Air Pollution Control Districts; Final rule. 54 FR 5448 (February 3, 1989).
   State Implementation Plans; General Preamble for the Implementation of Title I of the Clean Air Act Amendments of 1990, ("General Preamble"); Final rule. 57 FR 13498 (April 16, 1992).
   Control of Air Pollution From New Motor Vehicles and New Motor Vehicle Engines; Refueling Emission Regulations for Light-Duty Vehicles and Light-Duty Trucks, ("Onboard Refueling Vapor Recovery Rule"); Final rule. 59 FR 16262 (April 6, 1994).
   State Implementation Plans for Serious PM10 Nonattainment Areas, and Attainment Date Waivers for PM-10 Nonattainment Areas Generally; Addendum to the General Preamble for the Implementation of Title I of the Clean Air Act Amendments of 1990," ("General Preamble Addendum"); Final rule. 59 FR 41998 (August 16, 1994).
   Approval and Promulgation of State Implementation Plan; Indiana; Direct final rule. 62 FR 15844 (April 3, 1997).
   National Ambient Air Quality Standards for Ozone, Final rule. 62 FR 38856 (July 18, 1997).
   Approval and Promulgation of State Implementation Plan; Illinois; Final rule. 62 FR 66279 (December 18, 1997).
   National Volatile Organic Compound Emission Standards for Consumer Products, Final rule. 63 FR 8819 (September 11, 1998).
   Approval and Promulgation of Air Quality Implementation Plans; District of Columbia, Maryland, Virginia; Post 1996 Rate-of-Progress Plans, One-Hour Ozone Attainment Demonstrations and Attainment Date Extension for the Metropolitan Washington D.C. Ozone Nonattainment Area; Final rule. 66 FR 586 (January 3, 2001).
   Approval and Promulgation of Air Quality Implementation Plans; Connecticut; One-Hour Ozone Attainment Demonstration and Attainment Date Extension for the Greater Connecticut Ozone Nonattainment Area; Final rule. 66 FR 634 (January 3, 2001).
   Revisions to the California State Implementation Plan, Bay Area Air Quality Management District and Imperial County Air Pollution Control District; Direct final rule. 66 FR 20084 (April 19, 2001).
   Approval and Promulgation of Air Quality Implementation Plans; Rhode Island; Post-1996 Rate of Progress Plan; Direct final rule. 66 FR 30811 (June 8, 2001).
   Revisions to the California State Implementation Plan, Imperial County Air Pollution Control District, Monterey Bay Unified Air Pollution Control District, San Joaquin Valley Unified Air Pollution Control District, and South Coast Air Quality Management District; Final rule. 66 FR 36170 (July 11, 2001).
   Motor Vehicle Emissions Budgets in Progress, Attainment, and Maintenance State Implementation Plans for Ozone, Carbon Monoxide, and Nitrogen Dioxide; California; Final rule. 67 FR 69141 (November 15, 2002).
   Revisions to the California State Implementation Plan, Imperial County Air Pollution Control District and Monterey Bay Unified Air Pollution Control District; Direct final rule. 68 FR 4929 (January 31, 2003).
   Air Quality Designations and Classifications for the 8-Hour Ozone National Ambient Air Quality Standards; Early Action Compact Areas With Deferred Effective Dates; Final rule. 69 FR 23858 (April 30, 2004).
   Determination of Nonattainment and Reclassification of the Imperial County, 8-Hour Ozone Nonattainment Area; Final rule. 73 FR 8209 (February 13, 2008).
   National Volatile Organic Compound Emission Standards for Aerosol Coatings; Final rule. 73 FR 15604 (March 24, 2008).
   National Ambient Air Quality Standards for Ozone; Final rule. 73 FR 16436 (March 27, 2008).
   Adequacy Status of Motor Vehicle Emissions Budgets in Submitted Early Progress Plan Imperial County 8-Hour Ozone for Transportation Conformity Purposes; California; Notice of Adequacy. 73 FR 24594 (May 5, 2008).
   Revisions to the California State Implementation Plan, Imperial County Air Pollution Control District, Mojave Desert Air Quality Management District, South Coast Air Quality Management District, and Ventura County Air Pollution Control District; Direct final rule. 73 FR 70883 (November 24, 2008).
   Approval and Promulgation of Air Quality Implementation Plans; California; Determination of Attainment of the 1997 8-Hour Ozone Standard; Final rule. 74 FR 63309 (December 3, 2009).
   Approval and Promulgation of Air Quality Implementation Plans; Reformulated Gasoline and Diesel Fuels; California; Final rule. 75 FR 26653 (May 12, 2010).
   Revisions to the California State Implementation Plan, Imperial County Air Pollution Control District, Kern County Air Pollution Control District, and Ventura County Air Pollution Control District; Direct final rule. 76 FR 39303 (July 6, 2011).
   Revisions to the California State Implementation Plan, Joaquin Valley Unified Air Pollution Control District and Imperial County Air Pollution Control District; Final rule. 76 FR 67369 (November 1, 2011).
   Approval and Promulgation of Implementations Plans; California Air Resources Board -- In-Use Heavy-Duty Diesel-Fueled Truck and Bus Regulation, and Drayage Truck Regulation; Final rule. 77 FR 20308 (April 4, 2012).
   Air Quality Designations for the 2008 Ozone National Ambient Air Quality Standards; Final rule. 77 FR 30088 (May 21, 2012).
   Revisions to the California State Implementation Plan, for Imperial County, Placer County and Ventura County Air Pollution Control Districts; Final rule. 77 FR 72968 (December 7, 2012).
   Revisions to the California State Implementation Plan, Imperial County Air Pollution Control District; Final rule. 78 FR 896 (January 7, 2013).
   Implementation of the 2008 National Ambient Air Quality Standards for Ozone: State Implementation Plan Requirements; Proposed rule. 78 FR 34178 (June 6, 2013).
   Revisions to the California State Implementation Plan, California Air Resources Board -- Consumer Products; Direct final rule. 79 FR 62346 (October 17, 2014).
   Approval of Air Quality Implementation Plans; California; Imperial County; Ozone Precursor Emissions Inventories; Direct final rule. 79 FR 63332 (October 23, 2014).
   Implementation of the 2008 National Ambient Air Quality Standards for Ozone: State Implementation Plan Requirements; Final rule. 80 FR 12264 (March 6, 2015).
   National Ambient Air Quality Standards for Ozone; Final rule. 80 FR 65292 (October 26, 2015).
   Official Release of EMFAC2014 Motor Vehicle Emission Factor Model for Use in the State of California; Notice of availability. 80 FR 77337 (December 14, 2015).
   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; Final rule. 81 FR 26697 (May 4, 2016).
   Approval and Promulgation of Implementation Plans; California; California Mobile Source Regulations; Final rule. 81 FR 39424 (June 16, 2016).
   Cross-State Air Pollution Rule [CSAPR] Update for the 2008 Ozone NAAQS; Final rule. 81 FR 74504 (October 26, 2016).
   Approval of California Air Plan Revisions, Imperial County Air Pollution Control District; Proposed rule. 81 FR 89024 (December 9, 2016).
   Revisions to the Guideline on Air Quality Models: Enhancements to the AERMOD Dispersion Modeling System and Incorporation of Approaches To Address Ozone and Fine Particulate Matter; Final rule. 82 FR 5182 (January 17, 2017).
   Approval and Promulgation of Implementation Plans; California; California Mobile Source Regulations; Direct final rule. 82 FR 14446 (March 21, 2017).
   Approval of California Air Plan Revisions, Imperial County Air Pollution Control District; Final rule. 82 FR 26594 (June 8, 2017).
   Revisions to the California State Implementation Plan; Imperial County Air Pollution Control District; Stationary Sources Permits; Final rule. 82 FR 27125 (June 14, 2017)
   Approval and Promulgation of Implementation Plans; California; California Mobile Source Regulations; Final rule. 83 FR 23232 (May 18, 2018).
   Implementation of the 2015 National Ambient Air Quality Standards for Ozone: Nonattainment Area State Implementation Plan Requirements; Final rule. 83 FR 62998 (December 6, 2018).
   Approval of Air Quality Implementation Plans; California; South Coast Air Basin; 1-Hour and 8-Hour Ozone Nonattainment Area Requirements; Proposed rule. 84 FR 28157 (June 17, 2019).
   Clean Air Plans; 2008 8-Hour Ozone Nonattainment Area Requirements; San Joaquin Valley, California; Final rule. 84 FR 11198 (March 25, 2019).
   Official Release of EMFAC2017 Motor Vehicle Emission Factor Model for Use in the State of California; Notice of availability. 84 FR 41717 (August 15, 2019).
   Approval of California Air Plan Revisions; Imperial County Air Pollution Control District; Stationary Source Permits; Final rule. 84 FR 44545 (August 26, 2019).
   Approval and Conditional Approval of California Air Plan Revision, Imperial County Air Pollution Control District, Reasonably Available Control Technology; Proposed rule. 84 FR 49202 (September 19, 2019).

Guidance Documents and Informational Memos

   Memorandum from John Seitz, Director, OAQPS, to Regional Air Directors, "Guidance on the Reasonably Available Control Measure Requirement and Attainment Demonstration Submissions for Ozone Nonattainment Areas," November 30, 1999.
   Memorandum from John S. Seitz, Director, OAQPS, to Regional Air Directors, "Additional Submission on RACM From States with Severe One-Hour Ozone Nonattainment Area SIPs," December 14, 2000.
   "Emissions Inventory Guidance for Implementation of Ozone and Particulate Matter National Ambient Air Quality Standards (NAAQS) and Regional Haze Regulations," EPA-454-R-05-001, August 2005.
   "Guidance on the Use of Models and Other Analyses for Demonstrating Attainment of Air Quality Goals for the 8-Hour Ozone and PM2.5 NAAQS and Regional Haze," EPA-454/B-07-002, April 2007.
   "Fact Sheet  -  2008 Final Revisions to the National Ambient Air Quality Standards for Ozone," EPA, March 2008.
   Memorandum from Richard Wayland, Director, Air Quality Assessment Division, OAQPS, EPA, "Draft Modeling Guidance for Demonstrating Attainment of Air Quality Goals for Ozone, PM2.5, and Regional Haze," December 3, 2014.
   "Emissions Inventory Guidance for Implementation of Ozone and Particulate Matter National Ambient Air Quality Standards (NAAQS) and Regional Haze Regulations," EPA-454/B-17-002, May 2017. 
   Memorandum from Stephen D. Page, Director, OAQPS, EPA, "Supplemental Information on the Interstate Transport State Implementation Plan Submissions for the 2008 Ozone National Ambient Air Quality Standards under Clean Air Act Section 110(a)(2)(D)(i)(I)," October 27, 2017.
   Memorandum from James Hemby, Deputy Division Director for Richard A. Wayland, Director, Air Quality Assessment Division, OAQPS, EPA, "Modeling Guidance for Demonstrating Air Quality Goals for Ozone, PM2.5 and Regional Haze," November 29, 2018.

Technical Support Documents, Memos to File, and Data Analysis Documents

   "Technical Support for the Imperial County Air Pollution Control District Rule 116, Emissions Statement and Certification," EPA Region IX, January 2012.
   "Air Quality Modeling Technical Support Document for the Final Cross State Air Pollution Rule Update," ("CSAPR Update Air Quality Modeling TSD"), OAQPS, EPA, August 2016.
   Final CSAPR Update ozone design value and contributions spreadsheet, EPA, August 2016, entitled "CSAPR Update 2017 Modeled Ozone Design Values and Contributions Spreadsheet.xlsx."
   "Ozone Transport Policy Analysis Final Rule TSD," Office of Air and Radiation, EPA, August 2016.
   "Technical Support Document for EPA's Rulemaking for the California State Implementation Plan, Imperial County Air Pollution Control District, Rule 217  -  Large Confined Animal Facilities (LCAF) Permits Required, Rule 101  -  Definitions, Rule 202  -  Exemptions," EPA Region IX, November 2016.
   Final CSAPR Update ozone design value and contributions spreadsheet, EPA, March 2018, entitled "Ozone Transport 2023 Modeled Design Value and Contributions Spreadsheet.xlsx."
   Air Quality System (AQS) Design Value Report (AMP480) for Imperial County for 2008 ozone NAAQS for 2015-2017, EPA, August 10, 2018.
   AQS Design Value Report (AMP480) for Imperial County for 2008 ozone NAAQS for 2016-2018, EPA, August 8, 2019.
   Memorandum from Karina O'Connor, Air Planning Office, EPA Region IX, "Adequacy Documentation for Plan Motor Vehicle Emission Budgets in September 2017 Imperial Ozone Plan," May 24, 2019.
   "Imperial County Ozone Plan and Determination Regarding Attainment, Technical Support Document," EPA Region IX, September 2019.

   State Plans and Correspondence 
   "Staff Report, 8-hour Ozone State Implementation Plan Emission Inventory Submittal," CARB, Release date May 23, 2014, with 4 attachments, including:
Letter dated July 17, 2014 from Lynn Terry, Deputy Executive Officer for Richard Corey, Executive Officer, CARB to Jared Blumenfeld, Regional Administrator, EPA Region 9.
   "Revised Proposed 2016 Strategy for the State Implementation Plan," CARB, March 7, 2017.
   "Imperial County 2017 State Implementation Plan for the 2008 8-hour Ozone Standard," Imperial County Air Pollution Control District, September 2017 ("Imperial Ozone Plan"), with 17 attachments, including:
Letter dated November 14, 2017, from Richard Corey, Executive Officer, CARB, to Alexis Strauss, Acting Regional Administrator, EPA Region 9, and
"Staff Report, CARB Review of the Imperial County 2017 State Implementation Plan for the 2008 8-Hour Ozone Standard," CARB, September 22, 2017.
   "Imperial County Clean Air Act Section 179B(b) Retrospective Analysis for the 75 ppb 8-Hour Ozone Standard," CARB, Release date July 2018 ("Imperial Ozone Retrospective Demonstration"), with 1 attachment:
Letter dated July 3, 2018, from Richard Corey, Executive Officer, CARB, to Michael Stoker, Regional Administrator, EPA Region 9.
   "Imperial County 2018 Annual Particulate Matter Less Than 2.5 Microns in Diameter State Implementation Plan," Imperial County Air Pollution Control District, April 2018.
   California Emissions Projection Analysis Model (CEPAM) data for reactive organic gases (ROG), accessed by EPA 10/12/2018.
   "2018 Updates to the California State Implementation Plan," CARB, Hearing date October 25, 2018 ("2018 SIP Update"), with 8 attachments, including:
Letter dated December 5, 2018, from Richard Corey, Executive Officer, CARB, to Michael Stoker, Regional Administrator, EPA Region 9.
   Email correspondence from Ariel Fideldy, CARB, to Carol Bohnenkamp, EPA, Region IX, "Technical clarification info for Imperial County 179B(b) Retrospective Analysis," March 28, 2019.
   CEPAM data for nitrogen oxides (NOX), accessed by EPA 10/12/2018.
   Letter dated May 20, 2019 from Michael Benjamin, Chief, Air Quality Planning and Science Division, CARB to Amy Zimpfer, Associate Director, Air Division, EPA Region 9. Attachments included in the PDF file.
   
   Additional Documents for Proposed Rulemaking
   Consultation and Coordination with Indian Tribal Governments, Presidential Executive Order 13175. 65 FR 67249 (November 9, 2000).
   South Coast Air Quality Management Dist. v. EPA, 472 F.3d 882 (D.C. Cir. 2006).
   Louisiana Environmental Action Network (LEAN) v. EPA, 382 F.3d 575 (5th Cir. 2004).
   Simon, H., Baker, K. R., and Phillips, S., "Compilation and interpretation of photochemical model performance statistics published between 2006 and 2012," Atmospheric Environment, 2012, Vol. 61, 124 to 139.
   Bahr v. EPA, 836 F.3d 1218, 1235-1237 (9th Cir. 2016).
   South Coast Air Quality Management District v. EPA, 882 F.3d 1138 (D.C. Cir. 2018).

   Notice of Proposed Rulemaking
   Clean Air Plans; 2008 8-Hour Ozone Nonattainment Area Requirements; Determination of Attainment by the Attainment Date; Imperial County, California; Proposed rule, 84 FR 58641 (November 1, 2019).

   Public Comments and Related Documents
   Anonymous comment. Submitted November 27, 2019.
   Letter from Robert Ukeiley, Center for Biological Diversity; Luis Olmedo, Comite Civico del Valle, Inc.; and Steve Odendahl, Air Law for All, Ltd.; to Rory Mays, U.S. EPA, dated December 2, 2019, with attachments. Submitted December 2, 2019.
Imperial County  -  Mexicali Air Quality Work Plan to Improve Air Quality in the Border Region. 2018 Working Group Draft.
Imperial County  -  Mexicali Air Quality Work Plan Update and Air Quality Trends, California Air Resources Board, September 12, 2019.
Transcript of December 13, 2018 meeting of the State of California Air Resources Board.

   Additional Documents for Final Rulemaking
   Memorandum dated September 4, 1992, from John Calcagni, Director, Air Quality Management Division, EPA Office of Air Quality Planning and Standards, Subject: "Procedures for Processing Requests to Redesignate Areas to Attainment."
   Partial Approval and Partial Disapproval of Air Quality State Implementation Plans; California; Infrastructure Requirements for Ozone, Fine Particulate Matter (PM2.5), Lead (Pb), Nitrogen Dioxide (NO2), and Sulfur Dioxide (SO2). 81 FR 18766 (April 1, 2016).
   "Imperial County 2018 Redesignation Request and Maintenance Plan for Particulate Matter Less Than 10 Microns in Diameter (PM10)," submitted by CARB to EPA on February 13, 2019, as a revision to the Imperial County portion of the California SIP.
   Approval of Air Quality Implementation Plans; South Coast Air Basin; 1-Hour and 8-Hour Ozone Nonattainment Area Requirements. 84 FR 52005 (October 1, 2019).
   Approval and Conditional Approval of California Air Plan Revision, Imperial County Air Pollution Control District, Reasonably Available Control Technology. Final Rule, signed December 30, 2019. (Pre-publication copy.)
   Memorandum dated February 3, 2020, from Carol Bohnenkamp (EPA) to Rulemaking Docket EPA-R09-OAR-2018-0562, Subject: "Ozone Precursor Emission Inventory Trends for Imperial County, California."
   
   Notice of Final Rulemaking
   Clean Air Plans; 2008 8-Hour Ozone Nonattainment Area Requirements; Determination of Attainment by the Attainment Date; Imperial County, California; Final rule, 85 FR XXXX (DATE, 2020).
