Designations for 24-Hour PM2.5 NAAQS: Overview and Guidance

Amy Vasu PM2.5 Workshop

June 20-21, 2007

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24-Hour PM2.5 Designation Requirements

PM2.5 NAAQS was revised for the 24-hour PM2.5 standard only, lowered from 65 g/m3 to 35 g/m3.

Effective date of the revised PM standards is 12/18/06. Section 107(d)(1) requirements for new designations:

Governors must make recommendations no later than 12/18/07.

EPA must notify States and Tribes of any modifications no later than 120 days prior to the final designations date.

EPA is required to make final designations not later than 2 years after promulgation of the revised NAAQS (12/18/08); this date may be extended for up to 1 year if EPA has insufficient information to promulgate the designations (12/18/09).

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Areas Violating Revised 24-Hour PM2.5 NAAQS (2003-2005 data)

Approximately 70 areas are violating the 2006 24-hour PM2.5 NAAQS (based on 2003-2005 monitoring data)

Includes 32 of the 39 existing PM2.5 nonattainment areas Predominantly urban areas and smaller cities All except 3 are in the Eastern U.S.

38 are “new” areas (those currently designated attainment for PM2.5) Mix of urban areas, smaller cities, and a few non-

urban areas About 20 are in the Western U.S.

2003-2005 PM2.5 24-hour NAAQS Status: PM2.5 Nonattainment Areas and Additional Violating Sites

Nonattainment area violates the 24-hour NAAQS (32 areas) Nonattainment area meets the 24-hour NAAQS (7 areas)• Violating site in designated NA area (172 sites)• Violating site not in a designated NA area (59 sites)

32 of the 39 NAA violated the revised 24-hr NAAQS in 2003-2005. Plus, 59 sites outside those NAA also violated. 55 of these 59 sites are located in 34 distinct CBSA’s; 4 sites, located in 4 different counties, are not in a CBSA.

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Key Issues for 24-Hour PM2.5

Designations Guidance

Timing of final designations Monitoring data Identifying sites that violate the 24-hour PM2.5

NAAQS Treatment of data influenced by exceptional

events Boundary recommendations Tribal issues

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Draft Timeline for Designation Process

State and Tribal recommendations due Dec. 18, 2007

EPA Response No later than August 20, 2008 (120 days prior to final designations) States and Tribes may provide Prior to final designations additional comments

Final Designations No later than Dec. 18, 2008*

* If the EPA Administrator determines that there is insufficient information to make final designations, then the date of final designations may be extended by up to one year but no later than December 18, 2009.

2006 PM2.5 NAAQSMilestone

Date

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Monitoring data A State should base recommendations on 2004-

2006 data. In EPA’s response to these recommendations and

in final designations, EPA plans to: use the most recent 3 years of monitoring data decide on the use of less than complete data on a

case-by-case basis For a site not exceeding the standard but close to

it, a State should monitor the site for exceedances and be aware of the possibility of designation of “nonattainment” based on future data.

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Identifying Sites That Violate the 24-hour PM2.5 Standard

In general, violations are identified using data from Federal reference method (FRM) and Federal equivalent method (FEM) monitors that are sited and operated in accordance with 40 CFR Part 58, as revised on October 17, 2006 (see 71 FR 61236).

Procedures for using these data to determine whether a violation has occurred are given in 40 CFR Part 50 Appendix N, as revised on October 17, 2006 (see 71 FR 61144).

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Treatment of Data Influenced by Exceptional Events

For 2004-2006 monitoring data, the Exceptional Events rule (March 2007) establishes that: State must submit flags and initial supporting

information by October 1, 2007 (extension to Dec. 1 possible).

Technical demonstrations must be provided to EPA no later than the final submittal of the Governor’s letter with recommended area designations.

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Treatment of Data Influenced by Exceptional Events (cont’d)

For 2007 monitoring data, the rule requires that supporting documentation be submitted 12 months prior to a regulatory decision (i.e., for Dec. 2008 final designations, supporting documentation would be required by Dec. 2007).

EPA expects to use 2005-2007 data in responding to State and Tribal designation recommendations. Therefore, States will need to have their documentation and EPA approval completed in advance of EPA using the 2007 data for designations.  

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Boundary Recommendations

Each area should be assessed on a case-by-case basis. A nonattainment area must include not only the area that is

violating the standard but also nearby areas that contribute to the violation.

Boundary recommendations should be based on an evaluation of the nine factors used in the prior PM2.5 designations process, as well as any other relevant factors or circumstances specific to a particular area.

The same boundaries established for implementing the 1997 PM2.5 NAAQS may also be appropriate for implementing the 2006 24-hour PM2.5 NAAQS in areas where both sets of standards are violated .

Factors to Consider for Boundary Recommendations

Emission data Air quality data Population density and degree of urbanization

(including commercial development) Traffic and commuting patterns Growth rates and patterns Meteorology (weather/transport patterns) Geography/topography (mountain ranges or other air

basin boundaries) Jurisdictional boundaries (e.g., counties, air districts,

Reservations, metropolitan planning organizations) Level of control of emissions sources

Emissions

Air Quality

Meteorology

TopographyPolitical

and OtherBoundaries

Current EmissionControls

Growth

Traffic &Commuting

Population and

Urbanization

NonAttainment Boundaries

Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...

Little River B...Little River B...Little River B...Little River B...Little River B...Little River B...Little River B...Little River B...Little River B...

Little Travers...Little Travers...Little Travers...Little Travers...Little Travers...Little Travers...Little Travers...Little Travers...Little Travers...

Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...

Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...

Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...

Allegany Reser...Allegany Reser...Allegany Reser...Allegany Reser...Allegany Reser...Allegany Reser...Allegany Reser...Allegany Reser...Allegany Reser...

Aroostock Band...Aroostock Band...Aroostock Band...Aroostock Band...Aroostock Band...Aroostock Band...Aroostock Band...Aroostock Band...Aroostock Band...

Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...

Big Cypress Re...Big Cypress Re...Big Cypress Re...Big Cypress Re...Big Cypress Re...Big Cypress Re...Big Cypress Re...Big Cypress Re...Big Cypress Re...

Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...

Brighton Reser...Brighton Reser...Brighton Reser...Brighton Reser...Brighton Reser...Brighton Reser...Brighton Reser...Brighton Reser...Brighton Reser...

Catawba Reserv...Catawba Reserv...Catawba Reserv...Catawba Reserv...Catawba Reserv...Catawba Reserv...Catawba Reserv...Catawba Reserv...Catawba Reserv...

Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...

Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...

Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...

Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...

Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...

Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...

Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...

Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...

Forest County ...Forest County ...Forest County ...Forest County ...Forest County ...Forest County ...Forest County ...Forest County ...Forest County ...

Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...

Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...

Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...

Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...

Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...

Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...

Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...

Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...

Mashantucket P...Mashantucket P...Mashantucket P...Mashantucket P...Mashantucket P...Mashantucket P...Mashantucket P...Mashantucket P...Mashantucket P...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...

Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...

Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...

Onondaga Reser...Onondaga Reser...Onondaga Reser...Onondaga Reser...Onondaga Reser...Onondaga Reser...Onondaga Reser...Onondaga Reser...Onondaga Reser...

Passamaquoddy ...Passamaquoddy ...Passamaquoddy ...Passamaquoddy ...Passamaquoddy ...Passamaquoddy ...Passamaquoddy ...Passamaquoddy ...Passamaquoddy ...Penobscot Rese...Penobscot Rese...Penobscot Rese...Penobscot Rese...Penobscot Rese...Penobscot Rese...Penobscot Rese...Penobscot Rese...Penobscot Rese...

Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...

Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...

Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...

Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...

Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...

San Carlos Res...San Carlos Res...San Carlos Res...San Carlos Res...San Carlos Res...San Carlos Res...San Carlos Res...San Carlos Res...San Carlos Res...

Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...

St. Regis Moha...St. Regis Moha...St. Regis Moha...St. Regis Moha...St. Regis Moha...St. Regis Moha...St. Regis Moha...St. Regis Moha...St. Regis Moha...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...

Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...

White Earth Re...White Earth Re...White Earth Re...White Earth Re...White Earth Re...White Earth Re...White Earth Re...White Earth Re...White Earth Re...

Wind River Res...Wind River Res...Wind River Res...Wind River Res...Wind River Res...Wind River Res...Wind River Res...Wind River Res...Wind River Res...

Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...

Guidiville Ran...Guidiville Ran...Guidiville Ran...Guidiville Ran...Guidiville Ran...Guidiville Ran...Guidiville Ran...Guidiville Ran...Guidiville Ran...

Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...Kickapoo (TX)...

Little River B...Little River B...Little River B...Little River B...Little River B...Little River B...Little River B...Little River B...Little River B...

Little Travers...Little Travers...Little Travers...Little Travers...Little Travers...Little Travers...Little Travers...Little Travers...Little Travers...

Lovelock India...Lovelock India...Lovelock India...Lovelock India...Lovelock India...Lovelock India...Lovelock India...Lovelock India...Lovelock India...

Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Acoma Pueblo...Agua Caliente ...Agua Caliente ...Agua Caliente ...Agua Caliente ...Agua Caliente ...Agua Caliente ...Agua Caliente ...Agua Caliente ...Agua Caliente ...

Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...Alabama and Co...

Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...Alabama-Quassa...

Alturas Ranche...Alturas Ranche...Alturas Ranche...Alturas Ranche...Alturas Ranche...Alturas Ranche...Alturas Ranche...Alturas Ranche...Alturas Ranche...

Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bad River Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...Bay Mills Rese...

Benton Paiute ...Benton Paiute ...Benton Paiute ...Benton Paiute ...Benton Paiute ...Benton Paiute ...Benton Paiute ...Benton Paiute ...Benton Paiute ...Big Pine Reser...Big Pine Reser...Big Pine Reser...Big Pine Reser...Big Pine Reser...Big Pine Reser...Big Pine Reser...Big Pine Reser...Big Pine Reser...

Blackfeet Rese...Blackfeet Rese...Blackfeet Rese...Blackfeet Rese...Blackfeet Rese...Blackfeet Rese...Blackfeet Rese...Blackfeet Rese...Blackfeet Rese...

Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...Bois Forte (De...

Bridgeport Col...Bridgeport Col...Bridgeport Col...Bridgeport Col...Bridgeport Col...Bridgeport Col...Bridgeport Col...Bridgeport Col...Bridgeport Col...

Burns Paiute R...Burns Paiute R...Burns Paiute R...Burns Paiute R...Burns Paiute R...Burns Paiute R...Burns Paiute R...Burns Paiute R...Burns Paiute R...

Camp Verde Res...Camp Verde Res...Camp Verde Res...Camp Verde Res...Camp Verde Res...Camp Verde Res...Camp Verde Res...Camp Verde Res...Camp Verde Res...

Campo Reservat...Campo Reservat...Campo Reservat...Campo Reservat...Campo Reservat...Campo Reservat...Campo Reservat...Campo Reservat...Campo Reservat...

Carson Colony...Carson Colony...Carson Colony...Carson Colony...Carson Colony...Carson Colony...Carson Colony...Carson Colony...Carson Colony...

Cedar City Res...Cedar City Res...Cedar City Res...Cedar City Res...Cedar City Res...Cedar City Res...Cedar City Res...Cedar City Res...Cedar City Res...

Celilo Village...Celilo Village...Celilo Village...Celilo Village...Celilo Village...Celilo Village...Celilo Village...Celilo Village...Celilo Village...

Chehalis Reser...Chehalis Reser...Chehalis Reser...Chehalis Reser...Chehalis Reser...Chehalis Reser...Chehalis Reser...Chehalis Reser...Chehalis Reser...

Cherokee Reser...Cherokee Reser...Cherokee Reser...Cherokee Reser...Cherokee Reser...Cherokee Reser...Cherokee Reser...Cherokee Reser...Cherokee Reser...

Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...Cheyenne River...

Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...Chickasaw Nati...

Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...Chitimacha Res...

Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...Choctaw Nation...

Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...Choctaw Reserv...

Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...Cochiti Pueblo...

Coeur D'Alene ...Coeur D'Alene ...Coeur D'Alene ...Coeur D'Alene ...Coeur D'Alene ...Coeur D'Alene ...Coeur D'Alene ...Coeur D'Alene ...Coeur D'Alene ...

Colville Reser...Colville Reser...Colville Reser...Colville Reser...Colville Reser...Colville Reser...Colville Reser...Colville Reser...Colville Reser...

Coos, Lower Um...Coos, Lower Um...Coos, Lower Um...Coos, Lower Um...Coos, Lower Um...Coos, Lower Um...Coos, Lower Um...Coos, Lower Um...Coos, Lower Um...Cow Creek Rese...Cow Creek Rese...Cow Creek Rese...Cow Creek Rese...Cow Creek Rese...Cow Creek Rese...Cow Creek Rese...Cow Creek Rese...Cow Creek Rese...

Cowlitz Indian...Cowlitz Indian...Cowlitz Indian...Cowlitz Indian...Cowlitz Indian...Cowlitz Indian...Cowlitz Indian...Cowlitz Indian...Cowlitz Indian...

Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...Crow Reservati...

Death Valley T...Death Valley T...Death Valley T...Death Valley T...Death Valley T...Death Valley T...Death Valley T...Death Valley T...Death Valley T...

Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...Delaware Tribe...

Duck Valley Re...Duck Valley Re...Duck Valley Re...Duck Valley Re...Duck Valley Re...Duck Valley Re...Duck Valley Re...Duck Valley Re...Duck Valley Re...

Duckwater Rese...Duckwater Rese...Duckwater Rese...Duckwater Rese...Duckwater Rese...Duckwater Rese...Duckwater Rese...Duckwater Rese...Duckwater Rese...

Elk Valley Ran...Elk Valley Ran...Elk Valley Ran...Elk Valley Ran...Elk Valley Ran...Elk Valley Ran...Elk Valley Ran...Elk Valley Ran...Elk Valley Ran...

Forest County ...Forest County ...Forest County ...Forest County ...Forest County ...Forest County ...Forest County ...Forest County ...Forest County ...

Fort Apache Re...Fort Apache Re...Fort Apache Re...Fort Apache Re...Fort Apache Re...Fort Apache Re...Fort Apache Re...Fort Apache Re...Fort Apache Re...

Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...Fort Belknap R...

Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...Fort Berthold ...

Fort Hall Rese...Fort Hall Rese...Fort Hall Rese...Fort Hall Rese...Fort Hall Rese...Fort Hall Rese...Fort Hall Rese...Fort Hall Rese...Fort Hall Rese...

Fort Mojave Re...Fort Mojave Re...Fort Mojave Re...Fort Mojave Re...Fort Mojave Re...Fort Mojave Re...Fort Mojave Re...Fort Mojave Re...Fort Mojave Re...

Goshute Reserv...Goshute Reserv...Goshute Reserv...Goshute Reserv...Goshute Reserv...Goshute Reserv...Goshute Reserv...Goshute Reserv...Goshute Reserv...

Havasupai Rese...Havasupai Rese...Havasupai Rese...Havasupai Rese...Havasupai Rese...Havasupai Rese...Havasupai Rese...Havasupai Rese...Havasupai Rese...

Hoh Reservatio...Hoh Reservatio...Hoh Reservatio...Hoh Reservatio...Hoh Reservatio...Hoh Reservatio...Hoh Reservatio...Hoh Reservatio...Hoh Reservatio...

Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...Huron Potawato...

Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...Iowa Reservati...

Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...Jena Band of C...

Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...Jicarilla Apac...

Kaibab Reserva...Kaibab Reserva...Kaibab Reserva...Kaibab Reserva...Kaibab Reserva...Kaibab Reserva...Kaibab Reserva...Kaibab Reserva...Kaibab Reserva...

Kanosh Reserva...Kanosh Reserva...Kanosh Reserva...Kanosh Reserva...Kanosh Reserva...Kanosh Reserva...Kanosh Reserva...Kanosh Reserva...Kanosh Reserva...

Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...Lake Traverse ...

Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...Lower Sioux Re...

Lummi Reservat...Lummi Reservat...Lummi Reservat...Lummi Reservat...Lummi Reservat...Lummi Reservat...Lummi Reservat...Lummi Reservat...Lummi Reservat...

Maricopa (Ak-C...Maricopa (Ak-C...Maricopa (Ak-C...Maricopa (Ak-C...Maricopa (Ak-C...Maricopa (Ak-C...Maricopa (Ak-C...Maricopa (Ak-C...Maricopa (Ak-C...

Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...Match-E-Be-Nas...

Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...Mescalero Apac...

Nez Perce Rese...Nez Perce Rese...Nez Perce Rese...Nez Perce Rese...Nez Perce Rese...Nez Perce Rese...Nez Perce Rese...Nez Perce Rese...Nez Perce Rese...

Northwestern S...Northwestern S...Northwestern S...Northwestern S...Northwestern S...Northwestern S...Northwestern S...Northwestern S...Northwestern S...

Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...Omaha Reservat...

Pascua Yaqui R...Pascua Yaqui R...Pascua Yaqui R...Pascua Yaqui R...Pascua Yaqui R...Pascua Yaqui R...Pascua Yaqui R...Pascua Yaqui R...Pascua Yaqui R...

Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...Pine Ridge Res...

Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...Poarch Creek R...

Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...Ponca Tribe of...

Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...Potawatomi (Ka...

Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...Red Lake Ceded...

Rohnerville Ra...Rohnerville Ra...Rohnerville Ra...Rohnerville Ra...Rohnerville Ra...Rohnerville Ra...Rohnerville Ra...Rohnerville Ra...Rohnerville Ra...

Round Valley R...Round Valley R...Round Valley R...Round Valley R...Round Valley R...Round Valley R...Round Valley R...Round Valley R...Round Valley R...

Santa Ynez Res...Santa Ynez Res...Santa Ynez Res...Santa Ynez Res...Santa Ynez Res...Santa Ynez Res...Santa Ynez Res...Santa Ynez Res...Santa Ynez Res...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...Southern Ute R...

Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...Standing Rock ...

Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...Turtle Mountai...

Uintah and Our...Uintah and Our...Uintah and Our...Uintah and Our...Uintah and Our...Uintah and Our...Uintah and Our...Uintah and Our...Uintah and Our...

Warm Springs R...Warm Springs R...Warm Springs R...Warm Springs R...Warm Springs R...Warm Springs R...Warm Springs R...Warm Springs R...Warm Springs R... White Earth Re...White Earth Re...White Earth Re...White Earth Re...White Earth Re...White Earth Re...White Earth Re...White Earth Re...White Earth Re...

Winnemucca Col...Winnemucca Col...Winnemucca Col...Winnemucca Col...Winnemucca Col...Winnemucca Col...Winnemucca Col...Winnemucca Col...Winnemucca Col...

Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...Ysleta Del Sur...

15

Tribal issues

A few newly violating areas appear to be near Tribal lands We will follow generally the same process for Tribes (e.g.,

schedule) as for States (based on CAA sections 110(o) and 301(d) and the Tribal Authority Rule (TAR))

Process is somewhat different for the Tribes: No set timeframe by which Tribes are required to make

designation recommendations; Tribes are encouraged to meet same time frames as States

Nonattainment areas do not follow Tribal boundaries Tribes may question nonattainment status if no air monitors on

reservation, or the area designated is very large We will maintain the policy of offering to help Tribes obtain

relevant information addressing the factors

16

Plans for Communication of Guidance and Other Designation Information Each EPA Regional Office notified their State Air Quality

Directors and Tribal Air Contacts by email and provided the guidance.

Goal is to distribute the designations guidance to Governors & Tribal leaders by no later than June 30.

The designations guidance is available at: http://www.epa.gov/ttn/oarpg/t1pgm.html

We also plan to post the guidance and fact sheet on the PM designations website.

Data and tools for use in analysis of the nine factors will be made available at an EPA website, TBD. We will notify EPA work group, workshop attendees, NACAA, and NTAA.

We will continue to meet with NACAA, NTAA, and other stakeholders.