43 CFR § 3809.580 - What happens if I modify my notice or approved plan of operations?

---
identifier: "/us/cfr/t43/s3809.580"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "43 CFR § 3809.580 - What happens if I modify my notice or approved plan of operations?"
title_number: 43
title_name: "Public Lands: Interior"
section_number: "3809.580"
section_name: "What happens if I modify my notice or approved plan of operations?"
chapter_name: "BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR"
subchapter_number: "C"
subchapter_name: "MINERALS MANAGEMENT (3000)"
part_number: "3800"
part_name: "MINING CLAIMS UNDER THE GENERAL MINING LAWS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "16 U.S.C. 3101  30 U.S.C. 22-42, 181  301-306, 351-359, and 601  31 U.S.C. 9701; 40 U.S.C. 471  42 U.S.C. 6508; 43 U.S.C. 1701  and Pub. L. No. 97-35, 95 Stat. 357."
regulatory_source: "45 FR 13974, Mar. 3, 1980, unless otherwise noted."
cfr_part: "3800"
---


# 3809.580 What happens if I modify my notice or approved plan of operations?

(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.

(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.