Area Designations for 1997 Fine Particle (PM2.5) Standards
Tribal Recommendations and EPA Responses
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EPA requested that states and tribes submit recommendations to EPA for PM2.5 attainment and nonattainment areas by February 15, 2004. EPA responded to state and tribal recommendations during the summer of 2004, and designations became effective on April 5, 2005.
Tribal recommendations are presented below.
State information is available on the State Recommendations page.
Tribes Providing PM2.5 Designation Recommendations

Blue markers on the map indicate tribes participating in the recommendation process in 2004.
For more detailed geographical information about tribal lands, see the Bureau of Indian Affairs map.
The National Tribal Environmental Council and that Tribal Council's workgroup,
The National Designation & Implementation Work Group have been addressing tribal issues with respect to the designation process.
Recommendation Documents
You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.
The documents listed below are tribes' responses to EPA's request for recommendations on the designation of areas for the PM2.5 standard. These responses are provided here in PDF format for INFORMATIONAL PURPOSES ONLY and do not represent EPA's views on the appropriateness or adequacy of a tribe's recommendations.
The quality of these PDF files are quite variable, and are the result of the quality of the documents provided by the tribes.
Tribal recommendations received by EPA
Tribe | 2004 Recommendation | EPA Response | Tribe Remarks on EPA Response |
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Aroostook Band of Micmacs | Letter (PDF) (1 p, 93KB) | ||
Assiniboine and Sioux Tribes | Letter (PDF) (2 pp, 2MB) | ||
Bad River Band of Lake Superior Tribe of Chippewa Indians | Letter (PDF) (1 p, 112KB) | Letter (PDF) (3 pp, 183KB) | |
Blackfeet Tribe | Letter (PDF) (2 pp, 2MB) | ||
Cheyenne River Sioux Tribe | Letter (PDF) (2 pp, 2MB) | ||
Chippewa Cree Tribe | Letter (PDF) (2 pp, 2MB) | ||
Confederated Salish and Kootenai Tribes | Letter (PDF) (2 pp, 2MB) | ||
Cortina Band of Indians Cortina Indian Rancheria Wintun Tribe | Letter (PDF) (2 pp, 97KB) | ||
Crow Creek Sioux Tribe | Letter (PDF) (2 pp, 2MB) | ||
Crow Tribal Council | Letter (PDF) (2 pp, 2MB) | ||
Eastern Shawnee Tribe of Oklahoma | Letter (PDF) (3 pp, 218KB) Acknowledgement (PDF) (1 p, 62KB) |
Letter (PDF) (2 pp, 122KB) | |
Eastern Shoshone Tribe | Letter (PDF) (2 pp, 2MB) | ||
Flandreau Santee Sioux Tribe | Letter (PDF) (2 pp, 2MB) | ||
Gila River Indian Community | Letter (PDF) (4 pp, 149KB) Appendix 1 (PDF) (5 pp, 109 KB) |
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Grand Traverse Band of Ottawa and Chippewa Indians | Letter (PDF) (4 pp, 208KB) | ||
Gros Ventre and Assiniboine Tribes | Letter (PDF) (2 pp, 2MB) | ||
Houlton Band of Maliseet Indians | Letter (PDF) (1 p, 97KB) | ||
Iowa Tribe of Kansas and Nebraska | Letter (PDF) (1 p, 42KB) | Letter (PDF) (1 p, 594KB) | |
Keweenaw Bay Indian Community | Letter (PDF) (1 p, 28KB) | Letter (PDF) (4 pp, 207KB) | |
Kickapoo Tribe of Kansas | Letter (PDF) (1 p, 42KB) | Letter (PDF) (1 p, 615KB) | |
Leech Lake Band of Ojibwe | Letter (PDF) (3 pp, 224KB) | Letter (PDF) (3 pp, 178KB) | |
Lower Brule Sioux Tribal Council | Letter (PDF) (2 pp, 2.0MB) | ||
Mashantucket Pequot Tribal Nation | Letter (PDF) (1 p, 99KB) | ||
Mohegan Tribe | Letter (PDF) (1 p, 96.KB) | ||
Narragansett Indian Tribe | Letter (PDF) (1 p, 97KB) | ||
Northern Arapaho Tribe | Letter (PDF) (2 pp, 2MB) | ||
Northern Cheyenne Tribe | Letter (PDF) (2 pp, 2MB) | ||
Northwestern Band of the Shoshone Nation | Letter (PDF) (2 pp, 87KB) | Letter (PDF) (2 pp, 2MB) | |
Oglala Sioux Tribe | Letter (PDF) (2 pp, 12MB) | ||
Omaha Tribe of Nebraska | Letter (PDF) (1 p,42 KB) | Letter (PDF) (1 p, 59 KB) | |
Oneida Indian Nation | Letter (PDF) (2 pp, 72KB) | ||
Onondaga Nation | Letter (PDF) (2 pp, 70 KB) | ||
Paiute Indian Tribes of Utah | Letter (PDF) (2 pp, 2MB) | ||
Pala Band of Mission Indian | Letter (PDF) (2 pp, 33 KB) | ||
Passamaquoddy Tribe of Indians of Pleasant Point | Letter (PDF) (1 p, 98KB) | ||
Passamaquoddy Tribe of Indians of the Indian Township Reservation | Letter (PDF) (1 p, 98KB) | ||
Penobscot Indian Nation | Letter (PDF) (1 p, 97KB) | ||
Pokagon Band of Potawatomi Indians | Letter (PDF) (6 pp, 330KB) | ||
Ponca Tribe of Nebraska | Letter (PDF) (1 p, 42KB) | Letter (PDF) (1 p, 57KB) | |
Prairie Band Potawatomi Nation | Letter (PDF) (1 p, 42KB) Revision 1 (PDF) (1 p, 48KB) |
Letter (PDF) (1 p, 613KB) | |
Pueblo of San Ildefonso | Letter (PDF) (1 p, 88 KB) Acknowledgement (PDF) (1 p, 66KB) |
Letter (PDF) (2 pp, 150KB) | |
Rosebud Sioux Tribe | Letter (PDF) (2 pp, 2MB) | Letter (PDF) (1 p, 1MB) | |
Sac and Fox Nation | Letter (PDF) (2 pp, 212KB) Acknowledgement (PDF) (1 p, 62KB) |
Letter (PDF) (2 pp, 161KB) | |
Sac and Fox Nation of Missouri | Letter (PDF) (1 p, 42KB) Revision 1 (PDF) (2 pp, 59KB) |
Letter (PDF) (1 p, 599KB) | |
Sac and Fox Tribe of the Mississippi in Iowa | Letter (PDF) (1 p, 42KB) | Letter (PDF) (1 p, 617KB) | |
Saint Regis Mohawk Tribe | Letter (PDF) (2 pp, 72KB) | ||
Santee Sioux Tribe of Nebraska | Letter (PDF) (1 p, 42KB) | Letter (PDF) (1 p, 624KB) | |
Seneca Nation of Indians | Letter (PDF) (2 pp, 70KB) | ||
Sisseton-Wahpeton Oyate | Letter (PDF) (2 pp, 2MB) | ||
Skull Valley Band of Goshute Indians | Letter (PDF) (2 pp, 2MB) | ||
Southern Ute Indian Tribe | Letter (PDF) (2 pp, 97KB) | Letter (PDF) (2 pp, 2MB) | |
Spirit Lake Tribe | Letter (PDF) (2 pp, 2MB) | ||
Standing Rock Sioux Tribe | Letter (PDF) (2 pp, 2MB) | ||
Swinomish Tribal Community | Letter (PDF) (1 p, 753 KB) | Letter (PDF) (2 pp, 61KB) | |
Three Affiliated Tribes | Letter (PDF) (2 pp, 2MB) | ||
Tonawanda Band of Seneca Indians | Letter (PDF) (2 pp, 70KB) | ||
Turtle Mountain Band of Chippewa Indians | Letter (PDF) (2 pp, 2MB) | ||
Tuscarora Nation | Letter (PDF) (2 pp, 69KB) | ||
Ute Indian Tribe | Letter (PDF) (2 pp, 2MB) | ||
Ute Mountain Ute Tribe | Letter (PDF) (2 pp, 2MB) | ||
Wampanoag Tribe of Gay Head (Aquinnah) | Letter (PDF) (1 p, 98KB) | ||
Winnebago Tribe of Nebraska | Letter (PDF) (1 p, 42KB) | Letter (PDF) (1 p, 612KB) | |
Yankton Sioux Tribe | Letter (PDF) (2 pp, 2MB) | ||
Ysleta del Sur Pueblo | Letter (PDF) (2 pp, 163KB) Acknowledgement (PDF) (1 p, 59KB) |
Letter (PDF) (2 pp, 140KB) |