Nevada Administrative Code
Chapter 445A - Water Controls
MINING FACILITIES
Operation and Design of Facilities
Section 445A.437 - Minimum design criteria: Tailings impoundments
Universal Citation: NV Admin Code 445A.437
Current through September 16, 2024
1. A tailings impoundment must utilize a system of containment equivalent to:
(a) Twelve inches of recompacted native,
imported, or amended soils which have an in place recompacted coefficient of
permeability of no more than 1x10-6 cm/sec; or
(b) Competent bedrock or other geologic
formations underlying the site which has been demonstrated to provide a degree
of containment equivalent to paragraph (a).
2. An alternate level of containment may be required by the Department for all of the tailings impoundment or for a portion thereof after considering the following factors:
(a) The anticipated characteristics of the
material to be deposited;
(b) The
characteristics of the soil and geology of the site;
(c) The degree to which the hydraulic head on
the impoundment liner is minimized;
(d) The extent and methods used for recycling
or detoxifying fluids;
(e) Pond
area and volume;
(f) The depth from
the surface to all groundwater; and
(g) The methods employed in depositing the
impounded material.
Added to NAC by Environmental Comm'n, eff. 9-1-89-Substituted in revision for NAC 445.24368
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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