Minnesota Administrative Rules
Agency 158 - Natural Resources Department
Chapter 6132 - NONFERROUS METALLIC MINERAL MINING
RECLAMATION STANDARDS
Part 6132.2500 - TAILINGS BASINS
Universal Citation: MN Rules 6132.2500
Current through Register Vol. 49, No. 13, September 23, 2024
Subpart 1. Goals.
Tailings basins shall be designed, constructed, and operated to be structurally sound, control air emissions, minimize hydrologic impacts, promote progressive reclamation, and enhance the survival and propagation of vegetation.
Subp. 2. Requirements.
Tailings basins must meet the requirements in items A to C.
A. Tailings basins shall be
designed by professional engineers, registered in this state, who are
proficient in the design, construction, operation, and reclamation of tailings
basins.
B. The tailings basin
design shall:
(1) provide rationale for site
selection, with regard to dam safety and characteristics of the site that could
affect, or could be affected by, the tailings basin;
(2) describe materials, construction, and
operating performance specifications and limitations that must be maintained to
ensure protection of natural resources;
(3) ensure that precipitation events do not
result in overtopping the basin;
(4) describe the specific steps that must be
taken to achieve reclamation on tailings and dam surfaces;
(5) identify monitoring locations to ensure
compliance with the design;
(6)
comply with the requirements of part 6132.2200, if the tailings basin contains
reactive mine waste; and
(7)
include a schedule for the design engineers to inspect the construction,
operation, and reclamation of the tailings basins, including closure and
postclosure maintenance, to assure compliance with the design. In the event
design engineers become unable to perform the inspections, the engineers shall
be replaced by persons who meet the qualifications of part 6132.2500, subpart
2, item A, and that can demonstrate an understanding of the design and an
ability to perform the necessary inspections.
C. During the mining operation, dust
generation shall be reduced by maximizing progressive reclamation, or
controlled by the application of dust suppression techniques under part
6132.2800, subpart 2.
Statutory Authority: MS s 93.44 to 93.51; 103G.222
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