U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Cartographic Products and Services Branch; Minnesota Department of Transportation; Minnesota Pollution Control Agency \ Minnesota Pollution Control Agency 20240611 https://gisdata.mn.gov/dataset/env-ej-mpca-census The Census Tribal Areas represent areas of consideration for MPCA environmental justice efforts. MPCA considers communities within Tribal boundaries as Environmental Justice areas of concern. The spatial data for these boundaries are derived by combining the geographic areas represented in two data sources. The U.S. Census Bureau's 2022 TIGER/LINE Shapefiles, Current American Indian/Alaska Native/Native Hawaiian Areas for United States; and the Minnesota Department of Transportation's Tribal Government in Minnesota. U.S. Census Bureau, original file: "tl_rd23_us_aiannh.shp" Minnesota Department of Transportation, original file: "Tribal_Government__in_Minnesota" The following metadata has been provided by the U.S. Census Bureau: The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. The American Indian/Alaska Native/Native Hawaiian (AIANNH) Areas file includes the following legal entities: federally recognized American Indian reservations and off-reservation trust land areas, state-recognized American Indian reservations, and Hawaiian home lands (HHLs). The statistical entities included are Alaska Native village statistical areas (ANVSAs), Oklahoma tribal statistical areas (OTSAs), tribal designated statistical areas (TDSAs), and state designated tribal statistical areas (SDTSAs). Joint use areas included in this file refer to areas that are administered jointly and/or claimed by two or more American Indian tribes. The Census Bureau designates both legal and statistical joint use areas as unique geographic entities for the purpose of presenting statistical data. Note that tribal subdivisions and Alaska Native Regional Corporations (ANRCs) are additional types of American Indian/Alaska Native areas stored by the Census Bureau, but are displayed in separate files because of how they fall within the Census Bureau's geographic hierarchy. The boundaries for federally recognized American Indian reservations and off-reservation trust lands are as of January 1, 2023, as reported by the federally recognized tribal governments through the Census Bureau's Boundary and Annexation Survey (BAS). The boundaries for state-recognized American Indian reservations and for SDTSAs were delineated by state governor-appointed liaisons for the 2020 Census through PSAP. The following description is provided by Minnesota Department of Transportation: Minnesota interpretation of the boundaries of the federal recognized tribes within Minnesota. For the 12 tribes witin the State of Minnesota. This layer is derived from legal descriptions, but should not be used for survey-grade applications. This data was developed to identify locations that should be considered for MPCA environmental justice efforts. The MPCA defines environmental justice as the fair treatment and meaningful involvement of all people regardless of race, color, national origin, or income with respect to the development, implementation, and enforcement of environmental laws, regulations, and policies. This will be achieved when everyone benefits from the same degree of environmental protection and has equal access to the decision-making processes that contribute to a healthy environment. The MPCA is committed to this goal and integrating environmental justice principles into the work of the agency. Minnesota The Census tribal areas are sourced from tl_2023_us_aiannh.shp. The source data was retrieved from the Census Bureau website on 6/11/2024. The Minnesota Dept of Transportation source data are updated weekly and was also retrieved on 6/11/2024. Complete Annually -97.23 -89.53 49.37 43.5 ISO 19115 Boundaries, American Indian Area, Cartographic Boundary, State Tribal Statistical Areas Minnesota None This information is intended for MPCA planning purposes. These data are subject to interpretation and revision. Minnesota Pollution Control Agency Data Desk Mailing and Physical

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St. Paul MN 55155 datadesk.mpca@state.mn.us These data have been audited to ensure every Census Tribal Area and MPCA Environmental Justice Area are included and current as of the publication date. The Census Tribal Areas are derived by combining the spatial area of two datasets that represent tribal areas in Minnesota; The U.S. Census Bureau's tl_rd23_us_aiannh, and the Minnesota Department of Transportation's Tribal_Government__in_Minnesota. The polygon data were combined using the union tool in ArcGIS. The data is clipped to the Minnesota boundary plus a one mile buffer extending outside of Minnesota. The union operation results in the creation of some small polygon areas where one feature is slightly different shape than the corresponding feature in the other dataset. These polygons were merged into the larger neighboring polygon. In cases where there was disagreement between the DOT data attributes and the Census data attributes, the Census attributes were given precedence. census_tribal_areas U.S. Census Bureau OBJECTID Dataset instance feature ID esri Shape Feature geometry esri AIANNHCE Current American Indian/Alaska Native/Native Hawaiian area census code U.S. Census Bureau 0001 to 4799 Federally recognized legal American Indian area U.S. Census Bureau AIANNHNS Current American Indian/Alaska Native/Native Hawaiian Area Geographic Names Information System (GNIS) code U.S. Census Bureau INCITS 446:2008 (Geographic Names Information System (GNIS)), Identifying Attributes for Named Physical and Cultural Geographic Features (Except Roads and Highways) of the United States, Its Territories, Outlying Areas, and Freely Associated Areas, and the Waters of the Same to the Limit of the Twelve-Mile Statutory Zone U.S. Geological Survey (USGS) GEOID American Indian/Alaska Native/Native Hawaiian area identifier, American Indian/Alaska Native/Native Hawaiian area identifier; U.S. Census Bureau Current American Indian/Alaska Native/Native Hawaiian Area census code found in AIANNHCE NAME Current American Indian/Alaska Native/Native Hawaiian area name U.S. Census Bureau Values for this attribute are composed of a set of names. As such, they do not exist in a known, predefined set. NAMELSAD Current name and the translated legal/statistical area description code U.S. Census Bureau LSAD Current legal/statistical area description code for American Indian/Alaska Native/Native Hawaiian area U.S. Census Bureau 82 Community (suffix) U.S. Census Bureau 86 Reservation (suffix) U.S. Census Bureau 89 Trust Land (suffix) U.S. Census Bureau 95 Indian Community (suffix) U.S. Census Bureau OT Off-Reservation Trust Land U.S. Census Bureau Shape_Length esri Shape_Area esri Limitations: Although extensive effort has been made to produce error-free and complete data, all geographic information has limitations due to the scale, resolution, date and interpretation of the original source materials. Users should consult available data documentation (metadata) for this particular data to determine limitations and the precision to which the data depict distance, direction, location or other geographic characteristics. Data may be subject to change without prior notification. No warranty: Data is provided "as is," without any warranty whatsoever, including but not limited to any warranty as to performance, merchantability or fitness for any particular purpose. Liability: The entire risk as to the results of the use of this data is assumed by the user. MPCA is not responsible for any interpretation or conclusions made by those who acquire or use it. MPCA shall not be liable for any direct, indirect, special, incidental, compensatory or consequential damages or third-party claims resulting from the use of this data, even if MnGeo has been advised of the possibility of such potential loss or damage. In states that do not allow the exclusion or limitation of incidental or consequential damages, this data may not be used. Redistribution conditions: In obtaining this data from MPCA it is understood that you and/or your organization have the right to use it for any purpose. If you modify it, you are encouraged to apply responsible best practices by documenting those changes in a metadata record. If you transmit or provide the data to another user, it is your responsibility to provide appropriate content, limitation, warranty and liability information as you see fit. SHP PK-ZIP, version 1.93A or higher https://www2.census.gov/geo/tiger/GENZ2016/shp/cb_2016_us_aiannh_500k.zip The online cartographic boundary files may be downloaded without charge. MPCA's derived tribal areas data, and the MN Department of Transportation's Tribal Goverment Areas data can be downloaded from the Minnesota Geospatial Commons. To obtain more information about ordering U.S. Census Bureau's Cartographic Boundary Files visit https://www.census.gov/geo/www/tiger. The cartographic boundary files contain geographic data only and do not include display mapping software or statistical data. For information on how to use cartographic boundary file data with specific software package users shall contact the company that produced the software. MPCA Census Tribal Areas Minnesota IT Services, partnering with Pollution Control Agnecy (MNIT@MPCA) Ben Gosack Spatial Data Manager mailing and physical

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St. Paul MN 55155 651-757-2337 ben.gosack@state.mn.us 20240611 Minnesota Geographic Metadata Guidelines 1.2 http://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm Minnesota Pollution Control Agency Data Desk mailing and physical

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St. Paul MN 55155 datadesk.mpca@state.mn.us Universal Transverse Mercator 15 meters NAD83 GRS80 20260403 00364600 1.0 TRUE