Western Mojave Desert Air Quality Management Plans

This page reviewed September 25, 2017

This page contains information regarding recent and historical SIP activity for 8-hour ozone in the Western Mojave Desert and the former Southeast Desert Modified Air Quality Management nonattainment areas. The Western Mojave Desert Ozone Nonattainment Area consists of the Antelope Valley portion of Los Angeles County and the southwestern portion of San Bernardino County.  The Antelope Valley Air Quality Management District (AVAQMD) has jurisdiction over the Los Angeles County portion, and the Mojave Desert Air Quality Management District (MDAQMD) has jurisdiction over all of San Bernadino County including the portion within the Western Mojave Desert Ozone Nonattainment Area.  Below you will find links to:


Associated documents such as letters submitting the plan to ARB and the U.S. Environmental Protection Agency, resolutions, transportation conformity budgets, staff reports, and public hearing notices are also available below.  Additional information can be found on the websites for the Mojave Desert Air Quality Management District and the Antelope Valley Air Quality Management District.



2016 8-Hour Ozone SIP: Western Mojave Desert Nonattainment Area

At the public hearing held on May 25, 2017, ARB approved a SIP revision for attainment of the 8-hour ozone NAAQS in the Western Mojave Desert ozone nonattainment area.  

ARB Documents

Antelope Valley AQMD Documents


Mojave Desert AQMD Documents



2015 8-Hour Ozone Reasonably Available Control Technology (RACT) SIP Analysis: Antelope Valley Air Quality Management District


The Antelope Valley Air Quality Management District recently adopted the 2015 8-Hour Ozone Reasonably Available Control Technology State Implementation Plan Analysis and Federal Negative Declarations (FND) for 20 Control Technique Source Categories (2015 RACT SIP).  ARB submitted the 2015 RACT SIP to the U.S. Environmental Protection Agency   (U.S. EPA) as a revision to the California SIP.
 
ARB Documents

District Documents for RACT SIP


District Documents for FND



2015 8-Hour Ozone Reasonably Available Control Technology (RACT) SIP Analysis: Mojave Desert Air Quality Management District


The Mojave Desert Air Quality Management District recently adopted the 2015 8-Hour Ozone Reasonably Available Control Technology State Implementation Plan Analysis and Federal Negative Declarations (FND) for 19 Control Technique Source Categories (2015 RACT SIP).  ARB submitted the 2015 RACT SIP to the U.S. Environmental Protection Agency   (U.S. EPA) as a revision to the California SIP.
 
ARB Documents

District Documents for RACT SIP


District Documents for FND


2014 Updates to the 1997 8-Hour Ozone Standard SIPs: Coachella Valley and Western Mojave Desert 8-Hour Ozone Nonattainment Areas


The Air Resources Board conducted a public meeting on October 24, 2014 to consider minor updates to the Coachella Valley and Western Mojave Desert Federal Ozone Nonattainment Areas State Implementation Plan for the 1997 8-hour Ozone Standard.  The Board approved and ARB submitted the 2014 Updates to the U.S. Environmental Protection Agency (U.S. EPA) as a revision to the California SIP.
 
ARB Documents

U.S. EPA Actions
  • Final Rule: Approval of California Air Plan Revisions, Western Mojave Desert, Rate of Progress Demonstration (June 23, 2017)
  • Proposed Rule: Approvals and Promulgations: California Air Plan Revisions, Western Mojave Desert, Rate of Progress Demonstration (March 9, 2017)


February 2008 Ozone Early Progress Plans


Information regarding the Early Progress Plans for Ventura County, Antelope Valley-Western Mojave Desert, Coachella Valley, Eastern Kern County, and Imperial County.

ARB Documents

2007 Western Mojave Desert Ozone Attainment Plan  


At the public hearing held on June 26, 2008, ARB approved a SIP revision for attainment of the 8-hour ozone National Ambient Air Quality Standards in the  Western Mojave Desert ozone attainment area.  The Western Mojave Desert Ozone Nonattainment Area consists of the Antelope Valley portion of Los Angeles County and the southwestern portion of San Bernardino County.  The Antelope Valley Air Quality Management District (AVAQMD) has jurisdiction over the Los Angeles County portion, and the Mojave Desert Air Quality Management District (MDAQMD) has jurisdiction over the entire Mojave Desert, including the portion within the Western Mojave Desert Ozone Nonattainment Area.  The AVAQMD and MDAQMD adopted attainment demonstration plans which projects attainment of the federal 8-hour ozone standard by 2021.
 
Below you will find links to the Air Quality Management Plans, letters submitting the plan to ARB and the U.S. Environmental Protection Agency, resolutions, staff report, and a public hearing notice.
 
ARB Documents

Mojave Desert AQMD Documents


Antelope Valley AQMD Documents


2004 Southeast Desert Modified Air Quality Maintenance Area Ozone Plan  

The Southeast Desert Modified Air Quality Management Area covers the Victor Valley/Barstow region in San Bernardino County (Mojave Desert), the Coachella Valley/San Jacinto region in Riverside County (Coachella), and the Antelope Valley region in Los Angeles County (Antelope Valley).  The Mojave Desert Air Quality Management District (Mojave Desert AQMD) has jurisdiction over the Mojave Desert, the South Coast Air Quality Management District (South Coast AQMD) has jurisdiction over the Coachella Valley, and  the Antelope Valley Air Quality Management District (Antelope Valley AQMD)  has jurisdiction over the Antelope Valley.  The Antelope Valley AQMD contracts with the staff of the Mojave Desert AQMD for administrative services, including planning and rule development.

Each district is responsible for developing the portion of the 2004 Southeast Desert Modified Ozone State Implementation Plan (2004 SED SIP) which falls within their jurisdiction.  On May 4, 2004, ARB submitted to U.S. EPA the 2004 SED SIP for each portion of the nonattainment area along with supporting materials.  

ARB Documents and Supplemental Information

Mojave Desert AQMD Documents


Antelope Valley AQMD Documents
South Coast AQMD Documents

1995 Mojave Desert Planning Area PM10 Attainment Plan  

The Mojave Desert Planning Area covers the Victor Valley/Barstow region in San Bernardino County, plus the Yucca Valley and Twentynine Palms areas south of the boundary of the Twentynine Palms Marine Base. The Mojave Desert Air Quality Management District (Mojave Desert AQMD) has jurisdiction over the Mojave Desert Planning Area.

Mojave Desert AQMD Documents




California State Implementation Plan

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