The document provides an overview of cultural and historic resource regulations including the Antiquities Act of 1906, National Historic Preservation Act of 1966, and other relevant laws. It discusses the Section 106 review process that federal agencies must follow to consider impacts to historic properties from undertakings. Key aspects of the Section 106 process include identifying historic properties, evaluating their eligibility for historic registers, assessing effects, and developing treatment plans to resolve adverse effects. The document also compares the Section 106 process to review under the California Environmental Quality Act.