The director or his or her duly authorized representatives have the right, upon presentation of proper identification, to enter upon any property for the purpose of conducting studies or exploratory work to determine the existence of adverse effects of a landfill, to determine the feasibility of the remediation or prevention of such adverse effects and to perform the activities set forth in sections three and fifteen of this article. Such entry is as an exercise of the police power of the state for the protection of public health, safety and general welfare and is not an act of condemnation of property or trespass thereon. Nothing contained in this section eliminates any obligation to follow any process that may be required by law.