58 Pa. C.S. § 3221
A well operator may request permission to use a method or material other than those required by this chapter and applicable regulations for casing, plugging or equipping a well in an application to the department which describes the proposed alternative in reasonable detail and indicates the manner in which it will accomplish the goals of this chapter. Notice of filing of the application shall be given by the well operator by certified mail to any affected coal operators, who may, within 15 days after the notice, file objections to the proposed alternative method or material. If no timely objections are filed or raised by the department, the department shall determine whether to allow use of the proposed alternative method or material.
58 Pa.C.S. § 3221