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 74:29:11:38 - Remedial action for excursion

(1) A description of the excursion and its cause;

(2) The period of excursion, including exact dates and times;

(3) If the excursion has not been corrected, the anticipated time it is expected to continue;

(4) Steps taken or planned to reduce, eliminate, and prevent recurrence of the excursion; and

(5) Sample analyses for pH, calcium, magnesium, sodium, potassium, carbonate, bicarbonate, sulfate, chloride, silica, uranium, ammonia, nitrate, total dissolved solids (180 degrees C.), specific conductance, and any other parameter specified by the department. One or more parameters may be excluded, if the department determines that the concentration or value of a specific parameter is not likely to occur as a result of the in situ leach mine.

The operator shall report every two weeks. All reports shall be mailed to the department, postmarked within two days of the end of each report period. The first report period shall begin the day the presence of a control parameter exceeding its upper limit value in a monitor well is verified. The operator shall continue to make remedial action reports until cleanup is accomplished.

Following review by the department, the operator shall use any method the operator judges necessary and prudent to define the extent of the excursion and to clean up recovery fluids in an expeditious manner.