35 Pa. Stat. § 4013.1
Whenever an agent or employe of the department, charged with the enforcement of the provisions of this act, has been refused access to property, or has been refused the right to examine any air contamination source, or air pollution control equipment or device, or is refused access to or examination of books, papers and records pertinent to any matter under investigation, such agent or employe may apply for a search warrant to any Commonwealth official authorized by the laws of the Commonwealth to issue the same to enable him to have access, examine and seize such property, air contamination source, air pollution control equipment or device, or books, papers and records, as the case may be. It shall be sufficient probable cause to issue a search warrant that the inspection is necessary to properly enforce the provisions of this act.
35 P.S. § 4013.1