N.H. Rev. Stat. Ann. § 141-E:24

The commissioner or authorized representative shall be authorized to enter, at reasonable times and in performance of his or her duties, upon any private or public property, to inspect asbestos disposal site conditions and investigate reports by local health officials of newly discovered asbestos disposal sites. If the property owner refuses to consent to the inspection, the commissioner may obtain an administrative inspection warrant pursuant to RSA 595-B.