The Department, its employees and authorized agents are authorized, during reasonable hours and upon reasonable notice, to make inspections and conduct tests or sampling, or examine books, papers and records, including electronic records, pertinent to a matter under investigation, to determine compliance with the act and this chapter, as it deems necessary. The persons subject to § 110.201 (relating to registration requirement) shall grant access to, and make available upon request of, the Department, its employees and authorized agents, the facilities and records necessary for conducting the inspections, tests, sampling or examinations.
25 Pa. Code § 110.4