PHASE 1 SETTLEMENT PHASE 2 SETTLEMENT In 2015, the Navajo Nation and the United States entered into a $13.2 million settlement called the Phase 1 Settlement, that was managed by an independent trustee, with USEPA and NNEPA oversight. Under the Phase 1 Settlement the United States provided funds to assess 16 priority mines on the Navajo Nation, including three in the North Central AUM Region: Mitten No. 3, Charles Keith, and Harvey Blackwater No. 3. The assessment work at the 16 mines was completed in 2018. A Removal Site Evaluation report, which helped to determine the location and level of contamination at each mine, was developed for each site. In 2016, the Navajo Nation and the United States entered into a legal settlement called the Phase 2 Settlement. The Phase 2 Settlement established a trust account that is managed by Der- rith Watchman-Moore, an independent trustee, under USEPA and NNEPA oversight. As of February 14, 2022, the Expanded Trust Agreement was signed into place, which replaces the Phase 2 Settlement and provides funding for the cleanup process at the Phase 1 sites as needed, three of which are located in the North Central AUM Region. Superfund Process on the Navajo Nation Assessment 1 i l J uil* > < Access Agreements Resources Signs and Site Surveys Fences Evaluation Decision Making f Disposal \ ^Options J V" Engineering Public Action Evaluation / Comment Memorandum Cost Analysis Period Clean Up Design Action Operations & Maintenance ai Ongoing Maintenance w. Community Involvement and planning for a site's future are ongoing throughout the process Coordination with the Navajo Nation government including NNEPA, Navajo AML, and the Dine Uranium Remediation Advisory Commission KEEP OUT Ba'ha'dzid - Dm Ko'ne'na'adaa'da NO mm AT MINES Contact Navajo Superfund Prograi (| for Information at 1-800-314-1846 or USEPA at 1 -800-231 -3075 YsSI Reduce Your Contact with Uranium and Radiation Steps to keep yourself safe: Stay away from abandoned mines and mills Find out if your home is a contaminated structure Use regulated water for human needs Never use unregulated water for human needseven if it looks OK Use good water hauling practices to keep your water clean Get regular cancer screenings, like pap tests, mammograms, colonoscopies, and other cancer screenings For More Information Kenyon Larsen Remedial Project Manager USEPA Region 9 (415) 914-4213 larsen. kenyon@epa.gov Elsa Johnson Community Involvement Coordinator USEPA Region 9 (480) 250-0990 johnson. elsa@epa.go v Warren Roan Environmental Department Manager NNEPA (928) 871-7601 warrenjroan@navajo-nsn.gov Nasrin Erdelyi Remedial Project Manager USEPA Region 9 (415) 914-4214 erdelyi. nasrin@epa.gov Amanda Townsend Remedial Project Manager USEPA Region 9 (628) 249-1688 to wnsend. amanda@epa.gov USEPA Navajo Abandoned Uranium Mine website; www.epa.gov/navajo-nation-uranium-cleanup o Printed on 50% post-consumer recycled paper Processed chlorine-free ¦wEPA NAVAJO NATION U.S. Environmental Protection Agency Region 9 San Francisco, CA November 2022 North Central Abandoned Uranium Mine (AUM) Region Number of abandoned uranium mines in North Central AIJM Region: 63 Of these 63 mines, funds are available to begin the cleanup process at 14 mines North Central AUM Region includes the following Chapters: Oljato, Shonto, Dennehotso, Kayenta, and Mexican Water PRIORITY MINES AND SETTLEMENTS U.S. Environmental Protection Agency (USEPA), in partnership with Navajo Nation EPA (NNEPA), has identified 523 total AUMs on the Navajo Nation. Of these 523 AUMs, 46 mines were identified as "priority mines" based on radiation levels, proximity to homes, and potential for water contamination. Six of those priority mines are found in the North Central AUM Region. Funds are available to begin the cleanup process at 14 mines, approximately 22% of the mines in the North Central AUM Region, including all six priority mines. USEPA continues to look for companies responsible to assess and clean up the remaining mines in this region. USEPA constructing the Skyline Mine waste repository. Table 1: Summary of the North Central AUM Region identifying the name of the poten tially responsible party or trust responsible for mine cleanups, the number of mines, and the status in the Superfund process. See section below "Legal Agreements and AUM Cleanup Activities" for more information on the settlements. Name of Responsible Party or Trust for Cleanup Number of Mines* Superfund Process Status Cyprus Amax Minerals Company (Cyprus Amax) and Western Nuclear, Inc. (Western Nuclear) Phase 1 Trust (limited to mine assessment) Expanded Trust Agreement (limited to mine cleanups, as needed) Skyline Mine (no potentially responsible party identified) Nine mines (two of which are priority mines) Three priority mines Two mines (one of which is a priority mine) Removal Site Evaluations in progress for two priority mines and Monument No. 2 Removal Site Evaluations completed in 2018 for all three mines USEPA performed time-critical cleanup in 2011 Total 14 mines (six of which are priority mines) *One mine claim can include more than one site. Legal Agreements and AUM Cleanup Activities CYPRUS AMAX AND WESTERN NUCLEAR SETTLEMENT In 2017, the United States and the Navajo Nation entered into a historic settlement agreement with Freeport-McMoRan subsid- iaries, Cyprus Amax Minerals Company and Western Nuclear, Inc. The settlement funds the assessment and cleanup of 94 abandoned uranium mines on the Navajo Nation, including eight mines in the North Central AUM Region. This agreement addresses almost 20% of the abandoned uranium mines on the Navajo Nation. The mines are located in the following chapters: Red Valley, Sweetwater, Teec Nos Pos, Cove, Shiprock (Northern AUM Region); Oljato, Dennehotso, Kayenta (North Central AUM Region); Chilchinbeto (Central AUM Region); and Smith Lake (Eastern AUM Region). SKYLINE MINE USEPA completed a time-critical cleanup of uranium mining waste at the Skyline Mine in 2011. The waste was from mining that occurred from 1944 to 1962. The waste was located on the edge and at the foot of Oljato Mesa and posed a potential health risk to residents. As part of the cleanup, the mine waste was moved into a storage area, or "repository," constructed on top of the mesa. The repository creates a barrier around the mine waste to ensure it cannot harm residents or the environment. ------- Source: The source of the image is ESRI, used by the EPA with ESRI's permission- Date: July 28, 2022 r*- ApT^- Charles Keith r Utah Arizona N A 24 Miles Navajo Nation Abandoned Uranium Mines Utah ^ Ariz o/n a Map Area! 0 o lor ado 1° If x o *4 0 Mines Cyprus Amax # Currently Unfunded Phase 1 Trust # US EPA Funded Abandoned Uranium Mines and Current Settlements Navajo Nation North-Cental AUM Area Chapter House Highway US State £ s 13 % w ro ¦z. LLI o ------- |