CALIFORNIA AIR RESOURCES BOARD

NOTICE OF PUBLIC MEETING TO CONSIDER APPROVAL OF TH E COSO
JUNCTION PM10 REDESIGNATION REQUEST AND MAINTENANCE PLAN

The Air Resources Board (ARB or Board) will conduct a public meeting at the time and place noted below to consider the approval of the p roposed PM10 Redesignation Request and Maintenance Plan for the Coso Junction Planning Area that was developed and approved by the Great Basin Unified A ir Pollution Control District (District). If adopted, ARB will submit these eleme nts to the United States Environmental Protection Agency (U.S. EPA) for appr oval as a revision to the California State Implementation Plan.

DATE: June 24, 2010

TIME: 9:00 a.m.

PLACE: California Environmental Protection Agency

Air Resources Board Byron Sher Auditorium, Second Floor
1001 I Street Sacramento, California 95814

This item will be considered at a two-day meeting o f the Board, which will commence at 9:00 a.m., June 24, 2010, and may continue at 8:30 a.m., June 25, 2010. This item is
scheduled to be heard on the Board’s Consent Calend ar. All items on the consent calendar will be voted on by the Board immediately after the start of the public meeting. Any item may be removed from the consent calendar b y a Board member or at the request of a Board member or if someone in the audi ence would like to speak on that
item.

BACKGROUND

The federal Clean Air Act establishes planning requ irements for those areas that exceed the health-based National Ambient Air Qualit y Standards (standards). Areas are designated as nonattainment based on monitored exce edances of air quality standards. These nonattainment areas must develop and implemen t a State Implementation Plan (SIP) that demonstrates how they will attain the st andards by specified dates.

The District adopted the first PM10 attainment plan for the Coso Junction Planning Area (Coso Junction) in 1991. The Coso Junction attainme nt demonstration was based on controlling dust from Owens Lake. In addition, in a 2004 plan update, the District included a dispersion model analysis that indicated that after dust controls were implemented at Owens Lake, Coso Junction would be i n attainment.

On May 19, 2010, the U.S. EPA finalized its determi nation in the Federal Register that
Coso Junction attained the 24-hour PM10 standard. I n this clean data finding, U.S. EPAwaived certain planning requirements including thos e for reasonable further progress,

an attainment demonstration, reasonably available c ontrol measures, and contingency measures, since these provisions have the sole purp ose of helping achieve attainment
of the standard.

On May 17, 2010, the District adopted the PM10 Rede signation Request and Maintenance Plan (Plan) for Coso Junction. The Pla n officially requests that this area be redesignated to attainment for the PM10 standard and charts the course for continued maintenance of the standard. The adoptio n of controls on Owens Lake resulted in the Coso Junction attaining the 24-hour PM10 standard based on 2007-2009
PM10 data.

PROPOSED ACTION

ARB staff has reviewed the District’s Maintenance P lan for Coso Junction and has concluded that it meets applicable Clean Air Act re quirements. ARB staff has also
determined that the Maintenance Plan would ensure c ontinued maintenance of the standard for the required ten years following redes ignation. Staff is recommending that the Board approve the Maintenance Plan, as well as the corresponding emissions inventory and maintenance demonstration as a revisi on to the California SIP. In addition, ARB staff is recommending that the Board approve the District’s request that Coso Junction be redesignated from nonattainment to attainment for the federal PM10
standard.

AVAILABILITY OF DOCUMENTS

ARB staff has prepared a written Staff Report. Copi es of the Staff Report may be obtained from the ARB Public Information Office, 10 01 “I” Street, First Floor, Environmental Services Center, Sacramento, Californ ia 95814, (916) 322-2990. This notice, the Staff Report, and the District’s Coso J unction PM10 Maintenance Plan will
be available from ARB’s website at: http://www.arb.ca.gov/planning/sip/sip.htm

SUBMITTAL OF COMMENTS

Interested members of the public may also present c omments orally or in writing at the meeting, and in writing or by e-mail before the mee ting. To be considered by the Board, written comment submissions not physically submitte d at the meeting must be received no later than 12:00 noon, June 23, 2010

, and addressed to the following:

Postal mail: Clerk of the Board, Air Resources Boar d

1001 I Street, Sacramento, California 95814

Electronic submittal: http://www.arb.ca.gov/lispub/comm/bclist.php

The Board requests, but does not require that 20 co pies of any written statement be
submitted and that written and e-mail statements be filed at least 10 days prior to themeeting so that ARB staff and Board members have ti me to fully consider each

comment. Please note that under the California Public Record s Act (Government Code section 6250 et seq.), your written and oral commen ts, attachments, and associated contact information (e.g., your address, phone, ema il, etc.) become part of the public record and can be released to the public upon reque st. Additionally, this information may become available via Google, Yahoo, and any oth er search engines.

Further inquiries regarding this matter should be d irected to Ms. Sylvia Zulawnick, Manager of the Particulate Matter Analysis Section, Planning and Technical Support Division at (916) 324-7163, or Elizabeth Melgoza, A ir Pollution Specialist, Planning and Technical Support Division at (916) 322-6161.

To request a special accommodation or language need s for any of the following:

• An interpreter to be available at the hearing.

• Have documents available in an alternate format (i. e. Braille

, Large print) or another language.

• A disability-related reasonable accommodation.

Please contact the Clerk of the Board at (916) 322- 5594 or by facsimile at (916) 322-3928 as soon as possible, but no later th an 10 business days before the scheduled Board hearing. TTY/TDD/Speech to Speech u sers may dial 711 for the California Relay Service.

Para solicitar alguna comodidad especial o necesida d de otro idioma para alguna de las siguientes:

• Un intérprete que esté disponible en la audiencia.

• Tener documentos disponibles en un formato alterno (por decir, sistema Braille, o en impresión grande) u otro idioma.

• Una acomodación razonable relacionados con una inca pacidad.

Por favor llame a la oficina del Secretario del Con sejo de Recursos Atmosféricos al (916) 322-5594 o envíe un fax al (916) 322-3928 no menos de diez (10) días laborales antes del día programado para la audiencia. Para e l Servicio Telefónico de California para Personas con Problemas Auditivos, ó de teléfon os TDD pueden marcar al 711.

CALIFORNIA AIR RESOURCES BOARD

/s/

______________________________ James N. Goldstene
Executive Officer Date: June 8, 2010