Heap and dump leaching facilities shall be designed and constructed to be structurally sound, minimize hydrologic impacts, minimize the release of substances that adversely impact other natural resources, and promote progressive reclamation.
Heap and dump leaching facilities must meet the requirements in items A to C.
Heap and dump leaching facilities shall be designed by professional engineers, registered in this state, who are proficient in the design, construction, operation, neutralization, detoxification, and reclamation of heap and dump leaching facilities.
The heap and dump leaching facility design shall:
provide rationale for site selection with regard to characteristics of the site that could affect, or be affected by, the heap and dump leaching facilities;
ensure that only leaching solutions that meet all state and federal water quality standards will be released to the environment;
include means of detecting and retrieving leaching solutions which might be released if leakage occurs;
describe all materials, construction, and operating performance specifications and limitations that must be maintained to ensure protection of other natural resources;
describe the specific steps that must be taken to neutralize and detoxify residual leaching solutions within leached ore and sediments;
include a schedule for the design engineers to inspect the construction, operation, and reclamation of the facility, including closure and postclosure maintenance, to assure compliance with the design. In the event the design engineers become unable to perform the inspections, the engineers shall be replaced by persons who meet the qualifications of part 6132.2600, subpart 2, item A, and that can demonstrate an understanding of the design and an ability to perform the necessary inspections.
17 SR 2207
June 11, 2008
Official Publication of the State of Minnesota
Revisor of Statutes