Nevada Administrative Code
Chapter 445A - Water Controls
MINING FACILITIES
Operation and Design of Facilities
Section 445A.438 - Minimum design criteria: Liners

Universal Citation: NV Admin Code 445A.438

Current through September 16, 2024

1. When placed on native materials, soil liners must have a minimum thickness of 12 inches and be compacted in lifts which are no more than 6 inches thick. Except when used in tailing impoundments, a soil liner must have a permeability of not more than that exhibited by 12 inches of 1x10-7 cm/sec material.

2. Synthetic liners must be rated as having a resistance to the passage of process fluids equal to a coefficient of permeability of 1x10-11 cm/sec.

3. The Department shall review for completeness the applicant's evaluation of the following design parameters, where applicable, for a liner:

(a) The type of foundation, slope and stability;

(b) The over liner protection and provisions for hydraulic relief;

(c) The load and means of applying load;

(d) The compatibility of a liner with process solutions;

(e) The complexity of the leak detection and recovery systems;

(f) The depth from the surface to all groundwater; and

(g) The liner's ability to remain functionally competent until permanent closure has been completed.

Added to NAC by Environmental Comm'n, eff. 9-1-89-Substituted in revision for NAC 445.2437

NRS 445A.425, 445A.465

Disclaimer: These regulations may not be the most recent version. Nevada may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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