Pennsylvania Statutes Title 35 P.S. Health and Safety § 6018.609. Search warrants

(1) that the inspection, examination, test, or sampling is pursuant to a general administrative plan to determine compliance with this act;

(2) that the agent or employee has reason to believe that a violation of this act has occurred or may occur;  or

(3) that the agent or employee has been refused access to the property, building, premise, place, book, record or physical evidence, or has been prevented from conducting tests or taking samples.