---
kind: "section"
citation: "50 C.F.R. § 86.73"
title: "50"
number: "86.73"
heading: "How long must I operate and maintain a BIG-funded facility, and who is responsible for the cost of facility operation and maintenance?"
url: "https://uscodex.org/cfr/50/86.73"
---

# §86.73. How long must I operate and maintain a BIG-funded facility, and who is responsible for the cost of facility operation and maintenance?

- (a) You must operate and maintain a BIG-funded facility for its authorized purpose for its useful life. See §§ [86.3](/cfr/50/86.3.md), [86.43(f)](/cfr/50/86.43.md?p=f), and [86.74](/cfr/50/86.74.md).
- (b) Catastrophic events may shorten the useful life of a BIG-funded facility. If it is not feasible or is cost-prohibitive to repair or replace the BIG-funded facility, you may ask to revise the grant to reduce the useful-life obligation.
- (c) You are responsible for the costs of the operation and maintenance of the BIG-funded facility for its useful life, except as allowed at [§ 86.14(b)](/cfr/50/86.14.md?p=b).

## Notes

### Authority

Authority: 16 U.S.C. 777c, g, and g-1.

### Source

Source: 80 FR 26161, May 6, 2015, unless otherwise noted.