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II I I II I II III IIII III Doc Date:12/11/2001 <br />sss <br />r~ <br />L <br />Sly PART 822 - SPECIAL PERMANENT PROGRAM PERFORMANCE STANDARDS - OPERATIONS <br />l IN ALLUVIAL VALLEY FLOORS <br />822.1 Scope <br />This Part sets forth additional requirements for surface coal <br />mining and reclamation operations on or which affect alluvial <br />valley floors in the acid and semi-arid regions of the country. <br />822.2 Objectives <br />`J <br />This Part establishes the minimum environmental protection perform- <br />ance, reclamation and design standards, to preserve either the <br />existing or potential agricultural uses and the productivity of <br />alluvial valley Floors during and after surface coal mining and <br />reclamation operations. <br />822.11 Alluvial valley floors: Essential hydrologic functions <br />(a) Surface coal mining and reclamation operations shall be conducted <br />to preserve, throughout the mining and reclamation process, the essen- <br />tial hydrologic functions of alluvial valley floors not within an af- <br />fected area. These functions shall be preserved by maintaining those <br />geologic, hydrologic and biologic characteristics that support those <br />functions. <br />r 1 <br />`_J <br />(b) Surface coal mining and reclamation operations shall be conducted <br />to re-establish, throughout the mining and reclamation process, the <br />essential hydrologic functions of alluvial valley floors within an <br />affected area. These functions shall be re-established by reconstruct- <br />ing those geologic, hydrologic and biologic characteristics that support <br />those functions. <br />822-1 <br />