---
kind: "section"
citation: "40 C.F.R. § 258.26"
title: "40"
number: "258.26"
heading: "Run-on/run-off control systems."
url: "https://uscodex.org/cfr/40/258.26"
---

# §258.26. Run-on/run-off control systems.

- (a) Owners or operators of all MSWLF units must design, construct, and maintain:
  - (1) A run-on control system to prevent flow onto the active portion of the landfill during the peak discharge from a 25-year storm;
  - (2) A run-off control system from the active portion of the landfill to collect and control at least the water volume resulting from a 24-hour, 25-year storm.
- (b) Run-off from the active portion of the landfill unit must be handled in accordance with [§ 258.27(a)](/cfr/40/258.27.md?p=a) of this part.

## Notes

### Amendments

[56 FR 51016, Oct. 9, 1991; 57 FR 28627, June 26, 1992]

### Authority

Authority: 33 U.S.C. 1345(d) and (e); 42 U.S.C. 6902(a), 6907, 6912(a), 6944, 6945(c) and 6949a(c), 6981(a).

### Source

Source: 56 FR 51016, Oct. 9, 1991, unless otherwise noted.

### Amendments

[56 FR 51016, Oct. 9, 1991; 57 FR 28627, June 26, 1992]