---
kind: "section"
citation: "40 C.F.R. § 264.254"
title: "40"
number: "264.254"
heading: "Monitoring and inspection."
url: "https://uscodex.org/cfr/40/264.254"
---

# §264.254. Monitoring and inspection.

- (a) During construction or installation, liners (except in the case of existing portions of piles exempt from [§ 264.251(a)](/cfr/40/264.251.md?p=a)) and cover systems (e.g., membranes, sheets, or coatings) must be inspected for uniformity, damage, and imperfections (e.g., holes, cracks, thin spots, or foreign materials). Immediately after construction or installation:
  - (1) Synthetic liners and covers must be inspected to ensure tight seams and joints and the absence of tears, punctures, or blisters; and
  - (2) Soil-based and admixed liners and covers must be inspected for imperfections including lenses, cracks, channels, root holes, or other structural non-uniformities that may cause an increase in the permeability of the liner or cover.
- (b) While a waste pile is in operation, it must be inspected weekly and after storms to detect evidence of any of the following:
  - (1) Deterioration, malfunctions, or improper operation of run-on and run-off control systems;
  - (2) Proper functioning of wind dispersal control systems, where present; and
  - (3) The presence of leachate in and proper functioning of leachate collection and removal systems, where present.
- (c) An owner or operator required to have a leak detection system under [§ 264.251(c)](/cfr/40/264.251.md?p=c) must record the amount of liquids removed from each leak detection system sump at least once each week during the active life and closure period.

## Notes

### Amendments

[47 FR 32359, July 26, 1982, as amended at 50 FR 4514, Jan. 31, 1985; 50 FR 28748, July 15, 1985; 57 FR 3489, Jan. 29, 1992]

### Source

Source: 47 FR 32359, July 26, 1982, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 6905, 6912(a), 6924, 6925, and 6939g.

### Source

Source: 45 FR 33221, May 19, 1980, unless otherwise noted.

### Amendments

[47 FR 32359, July 26, 1982, as amended at 50 FR 4514, Jan. 31, 1985; 50 FR 28748, July 15, 1985; 57 FR 3489, Jan. 29, 1992]