25 Pa. Code § 87.93
(a) Each exploration hole, other drill or borehole, well or other exposed underground opening (except for holes solely drilled and used for blasting) shall be cased, sealed or otherwise managed as approved by the Department in order to:
(e) A solid barrier of undisturbed earth, 125 feet (38.1 meters) in radius shall be maintained around all oil and gas wells, except in the case of one of the following:
(2) The Department approves, in writing, a lesser distance, if:
The provisions of this § 87.93 amended under the Surface Mining Conservation and Reclamation Act (52 P. S. § § 1396.1—1396.19a); The Clean Streams Law (35 P. S. § § 691.1—691.1001); and section 1920-A of The Administrative Code of 1929 (71 P. S. § 510-20).
The provisions of this § 87.93 adopted December 19, 1980, 10 Pa.B. 4789, effective July 31, 1982, 12 Pa.B. 2382; amended July 30, 1982, 12 Pa.B. 2473, effective July 31, 1982, 12 Pa.B. 2382; amended December 15, 1995, effective December 16, 1995, 25 Pa.B. 5821; amended May 8, 1998, effective May 9, 1998, 28 Pa.B. 2227. Immediately preceding text appears at serial pages (206794) to (206795).
This section cited in 25 Pa. Code § 87.68 (relating to reclamation information); and 25 Pa. Code § 86.134 (relating to coal exploration performance and design standards).