The boundary depicts the Chaco Culture National Historical Park (CCNHP) Area Withdrawal analysis boundary which appeared on the Appendix B map accompanying the 2021-28525 Federal Register Notice (FRN). The boundary is an aliquoted approximation of a boundary proposed under HR 2181 and S 1079 titled “Chaco Cultural Heritage Protection Act of 2019” during the 116th Congress. The boundary is generally a 10-mile proximity buffer of CCNHP to include the outliers of 1) Pueblo Pintado to the east, south of the tri-county intersection of San Juan, McKinley, and Sandoval Counties, 2) Kin Bineola to the west, and south of the community of Lake Valley east of San Juan County Road 7750 at the San Juan and McKinley county boundary, and 3) Kin Ya’a to the southwest, east of Crownpoint and New Mexico Highway 371. Additional acreage encumbers the space between 10-mile proximity attributable to the main park and Kin Bineola and the Bisti / De-Na-Zin Wilderness to include the Fossil Forest Research Natural Area (RNA). The analysis boundary encumbers a total of 958,824.80 acres. The boundary can be derived from dissolving the "Withdrawal Boundary" field on the "20211108" attribute in the accompanying PLSSIntersected_CCNHP_AreaWithdraw_v3_20221013 feature class.

The boundary depicts the Chaco Culture National Historical Park (CCNHP) Area Withdrawal analysis boundary which appeared on the Appendix B map accompanying the 2021-28525 Federal Register Notice (FRN). The boundary is an aliquoted approximation of a boundary proposed under HR 2181 and S 1079 titled “Chaco Cultural Heritage Protection Act of 2019” during the 116th Congress. The boundary is generally a 10-mile proximity buffer of CCNHP to include the outliers of 1) Pueblo Pintado to the east, south of the tri-county intersection of San Juan, McKinley, and Sandoval Counties, 2) Kin Bineola to the west, and south of the community of Lake Valley east of San Juan County Road 7750 at the San Juan and McKinley county boundary, and 3) Kin Ya’a to the southwest, east of Crownpoint and New Mexico Highway 371. Additional acreage encumbers the space between 10-mile proximity attributable to the main park and Kin Bineola and the Bisti / De-Na-Zin Wilderness to include the Fossil Forest Research Natural Area (RNA). The analysis boundary encumbers a total of 958,824.80 acres. The boundary can be derived from dissolving the "Withdrawal Boundary" field on the "20211108" attribute in the accompanying PLSSIntersected_CCNHP_AreaWithdraw_v3_20221013 feature class.