43 CFR § 3934.21 - Written notice of default.

---
identifier: "/us/cfr/t43/s3934.21"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "43 CFR § 3934.21 - Written notice of default."
title_number: 43
title_name: "Public Lands: Interior"
section_number: "3934.21"
section_name: "Written notice of default."
chapter_name: "BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR"
subchapter_number: "C"
subchapter_name: "MINERALS MANAGEMENT (3000)"
part_number: "3930"
part_name: "MANAGEMENT OF OIL SHALE EXPLORATION AND LEASES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "25 U.S.C. 396d and 2107, 30 U.S.C. 241(a), 42 U.S.C. 15927, 43 U.S.C. 1732(b), 1733, and 1740."
regulatory_source: "73 FR 69480, Nov. 18, 2008, unless otherwise noted."
cfr_part: "3930"
---


# 3934.21 Written notice of default.

The BLM will provide the lessee or licensee written notice of any default, breach, or cause of forfeiture, and provide a time period of 30 calendar days to correct the default, to request an extension of time in which to correct the default, or to submit evidence showing why the BLM is in error and why the lease should not be canceled or exploration license terminated.