{"data":{"id":"us/43-cfr-3809.580","jurisdiction":"us","citation":"43 CFR 3809.580","heading":"What happens if I modify my notice or approved plan of operations?","body":"(a) If you modify a notice or an approved plan of operations under § 3809.331 or § 3809.431 respectively, and your estimated reclamation cost increases, you must increase the amount of the financial guarantee to cover any estimated additional cost of reclamation and long-term treatment in compliance with § 3809.552.\n(b) If you modify a notice or an approved plan of operations under § 3809.331 or § 3809.431 respectively, and your estimated reclamation cost decreases, you may request BLM decrease the amount of the financial guarantee for your operations.","path":["Title 43—Public Lands: Interior","Subtitle B—Regulations Relating to Public Lands","CHAPTER II—BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR","SUBCHAPTER C—MINERALS MANAGEMENT (3000)","PART 3800—MINING CLAIMS UNDER THE GENERAL MINING LAWS","Subpart 3809—Surface Management"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-43.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:15Z","sha256":"07aaf08d09e10724c0894c2229b6c553a6b37db6cd8561530d393f6f9fde964f","source_id":"us-cfr","stale":true,"prev":"us/43-cfr-3809.574","next":"us/43-cfr-3809.581"},"notice":"GroundRules: Original legal text. Not legal advice."}