372 sections in this chapter.
R.17.24-641 ACID- AND TOXIC-FORMING SPOILS
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17.24.641 ACID- AND TOXIC-FORMING SPOILS Drainage from acid- and toxic-forming spoil into ground and surface water must be avoided by: identifying, burying, and treating whenever necessary, spoil that, in the judgment of the department, may be detrimental to vegetation or may adv…
R.17.24-642 PERMANENT IMPOUNDMENTS AND FLOOD CONTROL IMPOUNDMENTS
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17.24.642 PERMANENT IMPOUNDMENTS AND FLOOD CONTROL IMPOUNDMENTS Permanent impoundments are prohibited unless constructed in accordance with ARM 17.24.504 and 17.24.639 and have open-channel spillways that will safely discharge runoff resulting from a 100-year, six-hour precipitat…
R.17.24-643 GROUND WATER PROTECTION
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17.24.643 GROUND WATER PROTECTION Mining must be conducted to control the effects of drainage from pits, cuts, and other mining activities and disturbances. The permittee shall prevent or control discharge of acid, toxic, or otherwise harmful mine drainage waters into ground wate…