30 CFR § 816.57 - Hydrologic balance: Stream buffer zones.
(a) No land within 100 feet of a perennial stream or an intermittent stream shall be disturbed by surface mining activities, unless the regulatory authority specifically authorizes surface mining activities closer to, or through, such a stream. The regulatory authority may authorize such activities only upon finding that—
(1) Surface mining activities will not cause or contribute to the violation of applicable State or Federal water quality standards, and will not adversely affect the water quantity and quality or other environmental resources of the stream; and
The following state regulations pages link to this page.
- 312 Ind. Admin. Code 25-6-28 - 312 IAC 25-6-28 - Surface mining; hydrologic balance; stream buffer zone