described The activities referred to in subsection (a) are as follows: (1) Reinstating a lease pursuant to section 31 of the Mineral Leasing Act ( 30 U.S.C. 188 ). (2) The following activities, provided that any new surface disturbance is contiguous with the footprint of the original authorization and does not exceed 20 acres or the acreage has previously been evaluated in a document previously prepared under section 102(2)(C) of the National Environmental Policy Act of 1969 ( 42 U.S.C. 4332(2)(C) ) with respect to such activity: (A) Drilling an oil or gas well at a well pad site at which drilling has occurred previously. (B) Expansion of an existing oil or gas well pad site to accommodate an additional well. (C) Expansion or modification of an existing oil or gas well pad site, road, pipeline, facility, or utility submitted in a sundry notice. (3) Drilling of an oil or gas well at a new well pad site, provided that the new surface disturbance does not exceed 20 acres and the acreage evaluated in a document previously prepared under section 102(2)(C) of the National Environmental Policy Act of 1969 ( 42 U.S.C. 4332(2)(C) ) with respect to such activity, whichever is greater. (4) Construction or realignment of a road, pipeline, or utility within an existing right-of-way or within a right-of-way corridor established in a land use plan. (5) The following activities when conducted from non-Federal surface into federally owned minerals, provided that the operator submits to the Secretary concerned certification of a surface use agreement with the non-Federal landowner: (A) Drilling an oil or gas well at a well pad site at which drilling has occurred previously. (B) Expansion of an existing oil or gas well pad site to accommodate an additional well. (C) Expansion or modification of an existing oil or gas well pad site, road, pipeline, facility, or utility submitted in a sundry notice. (6) Drilling of an oil or gas well from non-Federal surface and non-Federal subsurface into Federal mineral estate. (7) Construction of