South Dakota Administrative Rules
Title 74 - Department of Environment And Natural Resources
Article 74:29 - Mined land reclamation
Chapter 74:29:11 - In situ leach mining
Section 74:29:11:32 - Nonproduction zone monitoring

Universal Citation: SD Admin Rules 74:29:11:32
Current through Register Vol. 50, page 114, March 25, 2024

At a minimum, nonproduction zone monitor wells shall be completed in any aquifer potentially affected by injection into the production zone. These monitor wells shall be located within the production area and up to 200 feet outside of the production area, with the majority of these wells located in the down gradient direction of ground water flow in the aquifer in which the wells are completed.

For the first overlying aquifer above the production zone, a minimum of one well for every one acre of production area shall be completed. For each additional overlying aquifer, a minimum of one well for every three acres of production area shall be completed. For each underlying aquifer potentially affected by injection, the operator shall propose a monitor well spacing plan subject to approval by the department.

Alternative nonproduction zone monitor well locations and spacing may be considered if the operator demonstrates that the proposed location or spacing will adequately provide monitoring coverage.

General Authority: SDCL 45-6B-81.

Law Implemented: SDCL 45-6B-41.

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