1. Backfilled materials must be placed to minimize contamination of ground water systems with toxic or otherwise harmful mine drainage, minimize adverse effects on ground water flow and quality, minimize offsite effects, and support approved postmining land uses.

2. To control the effects of mine drainage, pits, cuts, and other mine excavations or disturbances must be located, designed, constructed, and utilized to prevent or control discharge of toxic or otherwise harmful mine drainage waters into ground water systems and prevent adverse impacts on those systems or on approved postmining land uses.

History: Effective August 1, 1980; amended effective May 1, 1990.

General Authority: NDCC 38-14.1-03

Law Implemented: NDCC 38-14.1-24