40 CFR § 147.2917 - Duration of permits.

---
identifier: "/us/cfr/t40/s147.2917"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 147.2917 - Duration of permits."
title_number: 40
title_name: "Protection of Environment"
section_number: "147.2917"
section_name: "Duration of permits."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "D"
subchapter_name: "WATER PROGRAMS"
part_number: "147"
part_name: "STATE, TRIBAL, AND EPA-ADMINISTERED UNDERGROUND INJECTION CONTROL PROGRAMS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 300f  and 42 U.S.C. 6901"
regulatory_source: "49 FR 20197, May 11, 1984, unless otherwise noted."
cfr_part: "147"
---


# 147.2917 Duration of permits.

Unless otherwise specified in the permit, the permits will be in effect until the well is plugged and abandoned or the permit terminated. The Regional Administrator will review each issued permit at least once every five years to determine whether it should be modified or terminated.