30 C.F.R. § 822.11 Essential hydrologic functions.
Title 30 - Mineral Resources
(a) The operator of a surface coal mining and reclamation operation shall minimize disturbances to the hydrologic balance by preserving throughout the mining and reclamation process the essential hydrologic functions of an alluvial valley floor not within the permit area. (b) The operator of a surface coal mining and reclamation operation shall minimize disturbances to the hydrologic balance within the permit area by reestablishing throughout the mining and reclamation process the essential hydrologic functions of alluvial valley floors.
Title 30: Mineral Resources
PART 822—SPECIAL PERMANENT PROGRAM PERFORMANCE STANDARDS—OPERATIONS IN ALLUVIAL VALLEY FLOORS
§ 822.11 Essential hydrologic functions.

