Section 616.445  Inspection Requirements

a)         During construction and installation, liners 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, and 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 that liner or cover.

b)         During operation, a surface impoundment must be inspected weekly and after storms to detect evidence of any of the following:

1)         Deterioration, malfunctions, or improper operation of overtopping control systems;

2)         Sudden drops in the level of the impoundment's contents;

3)         Severe erosion or other signs of deterioration in dikes or other containment devices; or

4)         A leaking dike.

(Source:  Amended at 47 Ill. Reg. 7631, effective May 16, 2023)